• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    A method of determining a rotational angle (α) of a rotatable body characterized by the steps of: radiating light of different characteristics through at least two different light emitting units (5, 6) disposed on the rotatable body at an angle to each other with respect to the direction of rotation of the body are arranged, receiving the light by at least two light-receiving units (2, 3) which are arranged fixed at a predetermined angle to each other, evaluation of the light-emitting units (5 (I), 5 (II), 6) received light and detecting information about the rotation angle (α) of the body.
    公开号:AT518531A4
    申请号:T50608/2016
    申请日:2016-07-07
    公开日:2017-11-15
    发明作者:Amr Eltaher Dr
    申请人:Tridonic Gmbh & Co Kg；
    IPC主号:
    专利说明:

    Device for detecting the angle of rotation Technical field
    The present invention relates to a device for detecting the angle of rotation and the direction of rotation of a rotatable body. The proposed solution is suitable for various applications in which detection of the angle of rotation is advantageous.
    State of the art
    The detection of the angle of rotation of a rotatable body can be useful for various applications, for example for the detection and / or control of turning processes. For example, a detection of the crankshaft angle of an internal combustion engine for detecting the combustion cycle of a particular cylinder for the synchronization of the ignition or injection during the operation of the internal combustion engine can be used.
    DE 103 16 122 A1 relates to a device for detecting the angular position of a rotatable body with an optical sensor, which generates a signal depending on the position of the rotatable body, and with a control device which evaluates the signal of the sensor. According to the invention, the signal of the sensor is different for each predetermined angular segment. For this purpose, the rotatable body is equipped with a radial elevation rising over the circumference, so that different distances to the sensor result from the rotation and these are used to determine the angular position. For high resolution and accuracy, accurate timing systems are needed to determine the distances. These systems can be realized only with considerable circuit complexity and / or by means of complex signal processing algorithms.
    DE2406393C2 discloses a rotary position device which has a light source on a rotary body and two stationary, juxtaposed photoelectric elements. The output signal of the photoelectric elements generated by the rotating light source is evaluated with respect to the intensity which results in dependence of the rotational angular position of the rotational position sensor and the associated division of the light beam with a defined beam angle between the photoelectric elements.
    Furthermore, the device uses a cylindrical member which not only fixes the light source but also serves as a mask to force the light beam into a predetermined shape. The main drawback of this device is the need for such a mask, its complex construction and assembly. In addition, the device covers only a part of the entire angular range of the rotatable body. Also, the device needs dependencies between the applied photoelectric elements
    From DE3633022A1 an arrangement for contactless rotation angle measurement of an object is known. Several light sources and light receivers for light of different wavelengths are used, by means of which a measuring scale with a coded pattern is irradiated in a cell shape. The wavelength-coded receivable light emanating from the pattern serves as a criterion for the extent of the rotational movement of the measuring scale and thus of the scale carrier. The complex structure makes the system not practical for various applications (eg, the determination of the angular position of an internal combustion engine). In addition, there is a problem when the rotatable body is out of round. For such a case, additional devices and / or evaluation methods would be required to detect this, otherwise inaccurate information about the angular position would be forwarded.
    Object of the invention
    The object of the present invention is to provide a more accurate, simpler and cheaper device for detecting the angle of rotation and the direction of rotation of a rotatable body. The invention enables a device for detecting the angle of rotation and the direction of rotation of a rotatable body, which can be realized in comparison to the prior art with less computational and circuit complexity. In addition, the invention makes it possible to detect when the rotatable body is out of round. Such a case, the device according to the invention can preferably detect within a revolution and determine a correction factor.
    Presentation of the invention
    It is the object of the present invention to provide a device, which is improved over the prior art, for detecting a rotation angle of a rotatable body, which enables the detection of a rotation angle of a rotatable body in a simple manner.
    This object is achieved by a device according to the independent claims. Advantageous developments emerge from the dependent claims and the embodiments.
    The invention relates to a device for detecting a rotational angle of a rotatable body, wherein the rotatable body has at least two different light-emitting units, which are arranged at an angle to each other with respect to the rotational direction of the rotatable body on the rotatable body. The light-emitting units can emit light with different properties. The device further comprises at least two light-receiving units which are fixedly arranged at a predetermined angle to each other. On the basis of the evaluation of the light received by the light-emitting units, information about the angle of rotation of the rotatable body can be determined.
    The light receiving units may have different receiving characteristics.
    The light-receiving units may be arranged spatially spaced from the rotatable body.
    The light receiving units may be arranged on a support member for the rotatable body.
    A partitioning element can be arranged in each case between the light-emitting units, so that the emission angles of the light emitted by the two light-emitting units do not overlap.
    The device may have an evaluation device, wherein the evaluation device evaluates both an information about the emitted light of the light-emitting units and the light received by the light-receiving units.
    The evaluation device can evaluate the energy profiles of the light-receiving units and, depending on the evaluation of the energy profiles, determine the rotation angle of the rotatable body.
    The light emitted by the light-emitting units may vary in wavelength.
    The light receiving units may have different receiving characteristics with respect to the wavelength of the light to be received.
    Each light-emitting unit can emit the light according to a predetermined code, wherein the codes of the individual light-emitting units differ from each other.
    The evaluation device can evaluate the energy profiles of the light-receiving units in compliance with the codes of the individual light-emitting units and determine the rotation angle of the rotatable body depending on the evaluation of the energy profiles.
    The rotatable body may be part of a lighting device and the light-receiving units may be arranged on an optical element, preferably a secondary optics or a reflector.
    The invention also relates to a lighting device, in particular a rotatable radiator unit, comprising a device according to the invention for detecting a rotation angle.
    The invention also relates to a motor, in particular internal combustion engine, comprising a device according to the invention for detecting a rotation angle.
    The invention also relates to the use of light emitting units and light receiving units for determining a rotational angle of a rotatable body, the rotatable body having at least two different light emitting units at an angle to each other with respect to the direction of rotation of the rotatable body rotatable bodies are arranged. The light-emitting units can emit light with different properties. The device may further comprise at least two light-receiving units which are fixedly arranged at a predetermined angle to each other. On the basis of the evaluation of the light received by the light-emitting units, information about the angle of rotation of the rotatable body can be determined.
    The invention also relates to a method for determining a rotation angle of a rotatable body, characterized by the following steps: emitting light with different properties through at least two different light-emitting units, which on the rotatable body at an angle to each other with respect to the rotational direction of the rotatable Body are arranged
    Reception of the light by at least two light-receiving units which are fixedly arranged at a predetermined angle to each other,
    Evaluation of the received light from the light emitting units and detecting information about the rotation angle of the rotatable body.
    Furthermore, the proposed solution according to the invention relates to a device according to the invention for detecting the angle of rotation of a rotatable body about an axis using two independently controllable light-emitting units and two independently evaluable light-receiving units. The light-emitting units each have a light-emitting unit. The light-receiving units have light-receiving units for light such as photodiodes or
    Photodiode arrays with individual evaluable photodiodes. For example, both the light-emitting units and the light-receiving units are each designed for a different wavelength of the light to be emitted or to be received. The light-emitting units are operatively connected to an axis of the rotatable body. The arrangement of the light-receiving units as well as the geometric configuration of the device are preferably symmetrical. Corresponding to the angle of rotation of the light-emitting unit and light-receiving units of the respective light-emitting and light-receiving units to each other, different signals resulting in an evaluation of their energy in a return to the angle of rotation within a revolution, i. 0 ° to 360 °, allow. As a result, a unique energy profile for each rotation angle can be determined.
    Furthermore, based on the energy profiles, a stepless direction of rotation determination within one revolution is possible.
    According to the invention, it is also possible, based on the energy profiles of the light-receiving units detect a deviation from the smooth circulation of the rotatable body within a revolution as a non-round run and correct the rotational movement of the rotatable body accordingly.
    Advantageously, according to the invention, the energy profiles of the light receiving units can recognize and correct the deviation from the non-circular course of the rotatable body within one revolution. If the rotatable body is out of round, the symmetrical design of the device is no longer valid (see Fig. 2h). Depending on the deviation of the rotatable body from the non-circular sequence, the received light energy of the light receiving units is changed. As a result, the energy profiles Ei and E2 are no longer as accurate (as shown in FIG. 3). This feature can be used to advantage to deliver an out of round warning signal within one revolution. Furthermore, the exemplary embodiment shows that a correction factor can be determined on the basis of the energy profiles in order to forward more accurate information about the rotation angle.
    Preferably, the energy profiles (Ei, E2, E3 and E4) provide at least one additional piece of information in addition to the angle of rotation. Depending on the sensitivity of the light receiving units and the resolution of the energy profiles any amount of information can be supplied.
    Preferably, two angles of rotation for two different and predetermined times can be determined on the basis of the energy profiles. As a result, a continuous speed detection and detection of the speed change of the rotatable body within a revolution are possible. The shorter the duration between these predetermined times, the faster a speed detection is possible.
    It has been found that the arrangement of the light receiving units and the geometrical configuration of the device can play a role, together with simple signal processing algorithms, to more clearly determine the difference between different angular positions of the rotatable body. It also helps to improve the linear relationship between energy profiles and rotation angles.
    In addition to the angular position, at least a large amount of information can be output, in particular the information "non-round drainage of the rotatable body", about contamination or the calculated rotational speed.
    A self-calibration may be carried out, the signals or energy profiles being known for given angle values of the rotation angle, stored in particular in a memory, and compared with the measured values.
    The proposed device can also be used to determine the crankshaft and / or camshaft angle in a vehicle. The light-emitting unit are fixedly connected to the axis of the crankshaft and / or camshafts. In the housing, the light receiving units are integrated / incorporated as integrally evaluable photodiode arrays, which span the circumference of the crankshaft and / or camshafts. As a result, a precise and continuous engine position determination is possible, which is necessary for the synchronization of the ignition or injection during operation of the internal combustion engine. Furthermore, the device allows that the motor position determination is possible even at a standstill.
    Preferably, both the light-emitting units and the light-receiving units are encapsulated within the device against ambient light, in order to avoid a possible influence of ambient light.
    The present invention will be described below with reference to preferred
    Embodiments with reference to the accompanying drawings described in more detail.
    Fig. 1 shows a geometric configuration of the device according to the invention
    Fig. 2a shows a first embodiment for any rotation angle (a) of the rotatable body for the alternative device
    2b, 2c 2d, 2e, 2f and 2g further illustrations of the first embodiment for the rotation angle α = 45 °, α = 90 ° α = 180 °, α = 270 °, α = 100 ° or α = 260 ° for the Direction of rotation (DR), which is counterclockwise
    Fig. 2h is an illustration for a non-circular running of the rotatable body in the angular range α = 0 ° and α = 90 °
    Fig. 3, the energy profiles of the light-receiving units 1, 2, 3 and 4 depending on the angle of rotation of the rotatable body for the entire angular range when the rotatable body runs exactly round
    4 shows an example of the two codes of the light-emitting unit 5 (I) and 5 (II)
    Fig. 5 shows a geometric configuration of the alternative device
    Fig. 6 shows the energy profiles of the light receiving units 11,12 and 13 depending on the angle of rotation of the rotatable body for the entire angular range when the rotatable body runs exactly round
    The device in Fig. 1 consists of four light-receiving units (1, 2, 3 and 4) and three light-emitting units (5 (l), 5 (ll) and 6), which with the axis of the rotatable body (7) are stored. The light receiving units are, for example, arranged as a square rotated by 45 °, which span the circumference of the axis of the rotatable body. The first two light-emitting units (5 (l) and 5 (ll)) transmit at a first wavelength (λι) and at the same time the second light-emitting unit (6) transmits the second wavelength (λ2). In addition, the first receiving units (1, 2 and 4) can receive only the wavelength (λι) and the second light receiving unit (3) receive only the wavelength (K2). The arrangement of the light-receiving units as well as the geometric configuration of the device are each symmetrical. The zero state (α = 0 °) of the rotatable body is shown, for example, in Fig. 1. Fig. 2a shows an example of any rotation angle (α) of the rotatable body. Here Ει (α), Ε2 (α), Ε3 (α) and Ε4 (α) are the energy profiles of the light receiving unit (1), (2), (3) or (4) depending on the angle of rotation of the rotatable body for the total angular range for the direction of rotation (DR), which is counterclockwise. The representation of the energy profiles (see Fig. 3) is based on the explanation given below.
    The symmetrical design of the device and the symmetrical arrangement of the light receiving units allow the four light receiving units to reach the same energy threshold (E) for the zero state (a = 0 °) of the rotatable body, i. Ei (0) = E2 (0) = E3 (0) = E4 (0) = E. These values of the energy profiles are, for example, clear for (a = 0 °). To make the description of the invention clearer, it is assumed that the energy profiles of the light receiving units must not exceed the energy threshold value (E). When one of the four light receiving units receives more than the energy threshold (E) within one revolution, the received energy is cut off by the electronic circuit of the device.
    When the rotatable body runs round, FIG. 3 shows the normalized value of the energy profiles Ει (α), Ε2 (α), E3 (a) and E4 (a) of the light receiving units 1, 2, 3 and 4, respectively, for the direction of rotation shown (DR). From the above explanation that Ei (0) = E2 (0) = E3 (0) = E4 (0) = 1. When the rotatable body in DR starts to rotate, part of the first light receiving unit (1) is covered by the second light emitting unit (6) having the second wavelength (λ2). As a result, the first light receiving unit (1) receives lower energy because the first light receiving unit (1) can receive only the first wavelength (λι). The larger the covered area of the first light receiving unit (1) from the second light transmitting unit (6), the lower the received power of the first light receiving unit (1). When (a = 90 °), the first light receiving unit (1) is completely covered by the second light emitting unit (6) as shown in Fig. 2c. Therefore, Fig. 3 shows that Ei (a) decreases continuously to zero depending on the rotational angle of the rotatable body between (a = 0 °) and (a = 90 °). The energy profile Ei (a) is used to detect the current angle of rotation of the rotatable body in this angular range. The light-emitting units are alternatively referred to as light emitters.
    The linear representation of the energy profiles in FIG. 3 is based on mathematical / physical approximation approaches to simplify the concept. It is advisable to perform a test bench measurement at various operating points for a more exact representation in order to present the energy profiles of the rotating body even more precisely. When the rotatable body continues to rotate in DR, the first light-emitting unit 5 (II) further completely covers the first light-receiving unit (1) (see Fig. 2d) until (a = 180 °). Thereby, it is shown in FIG. 3 that Ei (a) increases continuously between (a = 90 °) and (a = 180 °) until the normalized value "1" because it has been previously explained that the energy profiles of the light receiving units must not exceed the energy threshold (E).
    When the rotation angle of the rotary body is larger than 180 degrees and smaller than 270 degrees, a part of the first light receiving unit (1) does not receive light energy because there is no light emitting unit in this angle range. As a result, the first light receiving unit (1) receives less energy. The larger the covered area of the first light receiving unit (1) receiving no light, the lower the received power of the first light receiving unit (1). When (a = 270 °), the first light receiving unit (1) no longer receives any light energy (see Fig. 2e). Therefore, Fig. 3 shows that Ei (a) decreases continuously to zero depending on the rotation angle of the rotatable body between (a = 180 °) and (a = 270 °). On the basis of the above-mentioned (above) explanations, the energy profiles Ει (α), E2 (a), and E3 (a), as shown in Fig. 3, for the entire angular range of the rotatable body can be further explained.
    Preferably, based on the energy profiles, the direction of rotation of the rotatable body, as shown in Fig. 3, be determined within a revolution. Further, Fig. 3 shows that Ei (a) is exactly like E2 (a) when the rotatable body runs exactly round.
    Fig. 3 shows that the energy profiles Ει (α), E2 (a) and E3 (a) have unique values for each angle of rotation for only half the angular range, i. the angular range (0 ° to 180 °) or the angular range (180 ° to 360 °) as shown in Fig. 3, E2 (a = 100 °) = E2 (a = 260 °) = β. In addition, E3 (a = 100 °) = E3 (a = 260 °) = 0. Also, Ei (a) is an exact record of E2 (a) to detect the deviation from the non-circular action of the rotatable body within one revolution and correct, as previously explained.
    The following applies: The square brackets "] a, b [" mean that all values between "a" and "b" are considered, but not the values "a" and "b" themselves.
    Furthermore, it is shown with Fig. 2 that the light receiving unit (4) for the angular range] 0 °, 180 ° [from the first light-emitting unit 5 (l) or for the angular range] 180 °, 360 ° [from the first Light-emitting unit 5 (II) is illuminated. This information is used together with the Ει (α), E2 (a) and E3 (a) to have unique values for each angle of rotation for the entire angular range. 2f, 2g and 3 show that, with the aid of the light receiving unit (4), it can be clearly calculated whether the angle of rotation is 100 ° or 260 °.
    Fig. 3 shows that the energy profile E4 (a) can only distinguish between two stages ("on" and "off"). When the light energy falling on the light receiving unit (4) reaches a certain level (not shown here), Ε4 (α) is set to the "on" level. Otherwise, E4 (a) is set to "Off". The housings (9) and (10) ensure that the light receiving unit (4) of the first light emitting units 5 (l) and 5 (ll) can not be illuminated simultaneously. When the rotatable body stands still, the first light-emitting unit 5 (1) or the first light-transmitting unit 5 (II) is turned on to discriminate the two angular ranges] 0 °, 180 ° [and] 180 °, 360 ° [ , Alternatively, two different codes may be used to distinguish the first light-emitting units 5 (1) and 5 (II). For example, Fig. 4 shows two periodic codes (Ci (t) and Cn (t) where Tc is the duration of the periods of the codes.
    Advantageously, the energy profiles of the light receiving units can detect and correct the deviation from the non-circular motion of the rotatable body within one revolution. Depending on the deviation of the rotatable body from the non-round course, the received light energy of the light receiving units (1, 2, 3 and 4) is changed. For example, if the rotatable body is out of round between (a = 0 °) and (a = 90 °), then the symmetrical design of the device is no longer valid. For example, Fig. 2h shows that the rotation axis of the rotatable body (7) is shifted more toward the first light receiving unit (1) than the light receiving unit (2) because the body is out of round. Thereby, the first light-receiving unit (1) receives more light energy than the light-receiving units (2), because the light-emitting unit (5 and 6) are no longer in the center of the device. Based on the o.g. Explanation for the illustration in FIG. 3, the energy profiles of the light receiving units Ei (a) and E2 (a) are no longer so exact. Then a non-round warning signal within one revolution from the controller (not shown here) is created.
    Furthermore, a correction factor can be determined within one revolution. For example, if the received light energy of the light receiving unit (1) receives an additionally determined amount for certain rotation angles (ao) because the rotatable body is out of round, then this will be additional amount of the received light energy of the light receiving unit (2) for the same angle of rotation (ao) deducted. This assumption is a good approximation, because the original arrangement of the light-receiving units as well as the geometric design of the device were symmetrical.
    Fig. 3 shows that Ei (a = 45 °) = 0.5 and E2 (45 °) = 0.5, when the rotatable body runs exactly round. Based on the illustration in FIG. 2h, the first light receiving unit (1) receives more light energy than the two light receiving unit (2). This assumes, for example, that Ei (45 °) = 0.7 and E2 (45 °) = 0.3. In this example, egg (45 °) is increased by 0.2. Therefore, 0.2 of E2 (45 °) for the o.g. Statement deducted. Then a correction factor (KF) is calculated as follows:
    In this example, (KF = 0.2) is determined. Then the value of the KF is subtracted from the energy profile Ei (45 °) (0.7 - 0.2 = 0.5). By means of the values of the energy profiles Ei (a) = 0.5, E2 (a) and E3 (a), the angle of rotation of 45 ° is determined.
    Fig. 5 shows a geometric configuration of an alternative device according to another embodiment.
    Fig. 6 shows for the further embodiment, the energy profiles of the first light-receiving units (11) and (13) and a second light-receiving unit (12) depending on the rotation angle of the rotatable body for the entire angular range when the rotatable body runs exactly round. It can be seen from this example that it does not necessarily require four light receiving units for implementing the invention. According to this example, two first light-receiving units and one second light-receiving unit are needed to determine the angle of rotation. For certain applications, it may also be sufficient to use only a single first light-receiving unit and a single second light-receiving unit to determine the rotational angle of a rotatable body.
    The energy profiles of the light-receiving units, and in particular the detection of a deviation from the uniform movement of the rotatable body within a revolution, can also be used, for example, to disrupt or, for example, correct dirt of the device, in particular the light-receiving units and / or the light-emitting end Units. Such contamination can be caused for example by oiling or dust deposits. For use in the stepless angular position of an internal combustion engine, for example, a device according to FIG. 5 must be operatively connected to the axis of the crankshaft and / or camshaft (not shown here). As a result, an accurate motor position determination is possible. For the method for speed detection of an internal combustion engine, for example, a device according to FIG. 5 will be operatively connected to the axis of the crankshaft and / or camshaft and based on the energy profiles, a first value W1 of the rotation angle according to an evaluation unit (not shown here) and delivered in one Memory cell of a memory (not shown here) stored. If a predetermined period of time T is reached, the second value W2 is delivered. By means of the evaluation unit, the speed of the
    Internal combustion engine depending on the two values W1 and W2 calculated taking into account the predetermined time period T (see Fig. 3).
    The proposed device with the rotatable body may be part of a lighting device, for example a rotatable radiator unit, comprising a device according to the invention for detecting a rotation angle. The light-receiving units can be arranged on an optical element, preferably a secondary optics, a holding or fastening element or a reflector. The light-emitting units can be arranged, for example, on the rotatable part of a radiator.
    It is clear from the exemplary embodiments that with the present invention it is a more accurate device for detecting the angle of rotation and the direction of rotation of a rotatable body. The further advantage of the invention is the simplicity and the favorable realization.
    The first light-receiving units (for example, integrally evaluable photodiode arrays, which can receive only the wavelength λι) 3 The second light-receiving units (for example, integrally evaluable photodiode arrays, which can only receive the wavelength ki) 5 (l) and 5 (ll) The first light-emitting units (can transmit only the wavelength λι) 6 The second light-emitting unit (can transmit only the wavelength ki) 7 The axis of the rotatable body in the direction of rotation DR rotates 8 The axis of the light-emitting end Unit (5 and 6) 9, 10 the housings of the first light-emitting unit 5 (l) and 5 (ll) 11 and 12 the first light-receiving units (eg integrally evaluable photodiode arrays, which can receive only the wavelength λι) 13 The second light-receiving unit (for example, integrally evaluable
    Photodiode arrays that can only receive the wavelength h.2)
    权利要求:
    Claims (18)
    [1]
    claims
    A device for detecting a rotation angle (a) of a rotatable body, said rotatable body having at least two different light emitting units (5 (I), 5 (II), 6) at an angle to each other with respect to the rotational direction of rotatable body, are arranged on the rotatable body, and wherein the light-emitting units (5 (I), 5 (II), 6) radiate light having different properties, and wherein the apparatus further comprises at least two light-receiving units (2, 3) which are arranged fixed at a predetermined angle to each other, characterized in that on the basis of the evaluation of the light-receiving units (2, 3) received light information about the rotation angle (a) of the rotatable body can be determined.
    [2]
    2. Apparatus according to claim 1, characterized in that the light-receiving units (2, 3) have different receiving properties.
    [3]
    3. Apparatus according to claim 1 or 2, characterized in that the light-receiving units (2, 3) are arranged spatially spaced from the rotatable body.
    [4]
    4. Device according to one of the preceding claims, characterized in that the light-receiving units (2, 3) are arranged on a support element of the rotatable body.
    [5]
    5. Device according to one of the preceding claims, characterized in that between the light-emitting units (5 (I), 5 (II), 6) is arranged in each case a foreclosure element, so that the radiation angle of the two light-emitting units ( 5 (I), 5 (II), 6) do not overlap.
    [6]
    6. Device according to one of the preceding claims, characterized in that the device has an evaluation device, wherein the evaluation device both an information about the emitted light of the light-emitting units (5 (I), 5 (II), 6) and of the light receiving units (2, 3) received light evaluates.
    [7]
    7. Device according to one of the preceding claims, characterized in that the evaluation device evaluates the energy profiles of the light receiving units (2, 3) and determines the rotation angle (a) of the rotatable body as a function of the evaluation of the energy profiles.
    [8]
    8. Device according to one of the preceding claims, characterized in that the light emitted by the light-emitting units (5 (I), 5 (II), 6) differs in light wavelength.
    [9]
    9. Apparatus according to claim 8, characterized in that the light-receiving units (2, 3) have different receiving properties with respect to the wavelength of the light to be received.
    [10]
    10. Device according to one of the preceding claims, characterized in that each light-emitting unit (5 (I), 5 (II), 6) emits the light according to a predetermined code, wherein the codes of the individual light-emitting units (5 (5 (5). I), 5 (II), 6) differ from each other.
    [11]
    11.Vorrichtung according to claim 10, characterized in that the evaluation device evaluates the energy profiles of the light-receiving units (2, 3) in compliance with the codes of the individual light-emitting units (5 (I), 5 (II), 6) and depending on the evaluation of the energy profiles determines the angle of rotation (a) of the rotatable body.
    [12]
    12. Device according to one of the preceding claims, characterized in that in addition to the angular position at least a wide information is output, in particular the information "out of round flow of the rotatable body", about a pollution or the calculated speed.
    [13]
    13. Device according to one of the preceding claims, characterized in that a self-calibration takes place, wherein for predetermined angle values of the rotation angle, the signals or energy profiles are known, in particular stored in a memory, and compared with the measured values.
    [14]
    14. Device according to one of the preceding claims, characterized in that the rotatable body is part of a lighting device and the light-receiving units (2, 3) on an optical element, preferably a secondary optics or a reflector, are arranged.
    [15]
    15. Lighting device, in particular a rotatable radiator unit, comprising a device according to one of the preceding claims.
    [16]
    16. Engine, in particular internal combustion engine, comprising a device according to one claims 1 to 13.
    [17]
    17. Use of light emitting units and light receiving units for determining a rotation angle (a) of a rotatable body, wherein the rotatable body at least two different light emitting units (5 (I), 5 (II), 6), in one Are arranged on the rotatable body with respect to the direction of rotation of the rotatable body, and wherein the light-emitting units (5 (I), 5 (II), 6) emit light having different properties, and wherein the apparatus further comprises at least two Light-receiving units (2, 3), which are arranged fixed at a predetermined angle to each other, characterized in that based on the evaluation of the received light from the light emitting units (5 (I), 5 (II), 6) information can be determined by the angle of rotation (a) of the rotatable body.
    [18]
    18. A method for determining a rotation angle (a) of a rotatable body, characterized by the following steps: - emitting light with different properties by at least two different light emitting units (5, 6), which relate to the rotatable body at an angle to each other are arranged in the direction of rotation of the rotatable body, - receiving the light by at least two light receiving units (2, 3) which are fixedly arranged at a predetermined angle to each other, - evaluation of the light emitting units (5 (I), 5 (II), 6) received light and detecting information about the rotation angle (a) of the rotatable body.
    类似技术:
    公开号 | 公开日 | 专利标题
    DE102012102244B4|2015-02-12|Laser radar for three-dimensional scanning
    DE102004052508B4|2006-08-03|System and method for measuring and monitoring the surface of a body
    DE4243778A1|1994-06-30|Position detection method, e.g. for vehicle steering wheel angle
    EP2533032A1|2012-12-12|Measuring method and device for determining transmission and/or reflection characteristics
    EP2522960B1|2014-03-26|Method and device for measuring the relative angle of two objects which can be rotated relative to each other
    AT518531B1|2017-11-15|Device and method for detecting the angle of rotation
    EP2531836A1|2012-12-12|Method and device for optically inspecting a test object with an at least partially reflective surface
    WO2020064936A1|2020-04-02|Device and method for determining the length of overlap of two material ends of a revolvable object, and use of said device
    DE102015116957A1|2017-04-06|Device for detecting the absolute position of a rotary knob
    DE102009045031A1|2011-03-31|Radiation sensor for solar panels
    DE102017003100A1|2017-10-19|Sensor device, shaft measuring arrangement with a central axis having a twistable shaft and a sensor device. Electric motor with a sensor device and a central axis having twistable shaft, and method for determining a torque acting on a twistable shaft by means of a sensor device
    DE2646674A1|1977-04-21|Optical angular position indicator - senses light reflection from sector shaped marking around circumference
    DE102005039405B4|2013-04-18|Device for determining the absolute rotational position of a rotation axis
    EP2511852B1|2013-03-13|Lighting device for a camera-based code reader
    EP2908152B1|2016-06-08|Optoelectronic sensor and method for detecting objects in a surveillance area
    DE3632336A1|1987-04-16|DISTANCE MEASURING DEVICE
    EP1312534A2|2003-05-21|Steering wheel steering angle determination apparatus
    DE202005012194U1|2005-12-29|Position and distance detection device has component in light path between light source and sensor movable relative to source and/or sensor that varies light property of light detected by sensor depending on its relative movement
    DE3919917A1|1991-01-03|Optical sensor identifying and/or locating object - uses matrix of discret light sources at known spacing and main radiation angle
    DE102007032249B3|2009-01-08|Object position determining method for use in two-dimensional detection region, involves performing determination of object position at detection region in evaluation unit based on measuring signals of temporal triangular light sensors
    WO2018086813A1|2018-05-17|Tof camera, motor vehicle, method for producing a tof camera and method for determining a distance to an object
    EP1744128B1|2012-02-08|Method for determining the absolute angular position of the steering wheel of a motor vehicle
    WO2010094268A2|2010-08-26|Apparatus and method for measuring an object
    DE102016013880A1|2017-07-20|A system comprising a first part and a second part
    EP2908099B1|2017-04-12|Device for measuring the angle of rotation of two objects rotating relative to each other
    同族专利:
    公开号 | 公开日
    AT518531B1|2017-11-15|
    DE112017003408A5|2019-03-21|
    WO2018007550A1|2018-01-11|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US5671043A|1995-10-03|1997-09-23|Cambridge Technology, Inc.|Optical position detector for determining the angular position of a rotatable element|
    US20080042051A1|2006-08-21|2008-02-21|Gsi Group Corporation|Rotary optical encoder employing multiple subencoders with common reticle substrate|
    DE102006058805A1|2006-12-13|2008-06-19|Spacecontrol Gmbh|Device for detecting movements and forces|
    US20100118305A1|2008-11-13|2010-05-13|Sick Stegmann Gmbh|Process and device for measuring the rotation angle of a rotating object|
    US3828188A|1973-02-12|1974-08-06|Pertec Corp|Rotational position sensor|
    JPS60161522A|1984-02-02|1985-08-23|Toshiba Corp|Optical resolver|
    DE3633022A1|1986-09-29|1988-04-07|Siemens Ag|Arrangement for contactless distance measurement or angle measurement|
    JPH11264743A|1998-03-17|1999-09-28|Seiko Precision Inc|Rotation angle detecting device|
    US6946650B2|2002-03-04|2005-09-20|Independence Technology, L.L.C.|Sensor|
    DE10316122A1|2003-04-09|2004-11-04|Bayerische Motoren Werke Ag|Angle position of cylinder sensing device e.g. for sensing number of revolutions in cylinder of internal combustion engine, device swivels around axle, and dependent on position of swiveling, signal is produced|
    JP4984268B2|2009-11-09|2012-07-25|独立行政法人産業技術総合研究所|Shaft measurement method and angle detector with self-calibration function with shaft shake measurement function|CN110726385A|2018-07-17|2020-01-24|罗伯特·博世有限公司|Angle position detection device, method and motor|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50608/2016A|AT518531B1|2016-07-07|2016-07-07|Device and method for detecting the angle of rotation|ATA50608/2016A| AT518531B1|2016-07-07|2016-07-07|Device and method for detecting the angle of rotation|
    PCT/EP2017/066999| WO2018007550A1|2016-07-07|2017-07-06|Apparatus for capturing the angle of rotation|
    DE112017003408.6T| DE112017003408A5|2016-07-07|2017-07-06|Device for detecting the angle of rotation|
    [返回顶部]