• 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:
    The transducer exhibits a base body (1) which is mounted in a frame (15) and on which one end of a cylindrical helical spring (3), the components of the illumination (7, 8, 9) and imaging system (10) and the optical divider (6a, 6b, 6c) are mounted. The other end of the cylindrical helical spring (3) is connected to a part (2) which is rotatably supported in the base body. The invariant-tilt reflector (5) is also attached to this part (2). The central beam which passes through the invariant-tilt reflector (5) and the axis of symmetry (A) of the helical spring (3) are located at the same distance from the rotating hinge (16) of the rotatably supported part (2). The cylindrical helical spring (3) consists of a quartz tube with a helically machined groove. The device can be used for digitally measuring the variables of force and variables which can be derived therefrom, this measurement being temperature-independent within wide limits and having a high resolution. <IMAGE>
    公开号:SU1083080A1
    申请号:SU807771242
    申请日:1980-06-09
    公开日:1984-03-30
    发明作者:Герд Йэгер；Зигфрид Хонекер；Раинер Грюнвальд
    申请人:Феб Комбинат Нагема (Инопредприятие)；
    IPC主号:
    专利说明:

    2. The device according to l, 1, characterized in that the base of the lever and the holder of the reflector are made of kieselgut, and the invariant tilting reflector and optical divider are made of optical quartz.
    The invention relates to devices for digitizing force measurements.
    Devices for measuring force are known, in the second, the measured force acts on a strain gauge. The deformation of this sensor, measured by various methods, is a measure of force. Known among them are devices that determine the deformation using an interferential measurement method. In accordance with the patent DD-P5 94905, the strain sensor is designed so that it simultaneously operates as an interferometer. In this device, there are interference turning lanes, the distance between which in direction 3 changes. depending on the value of the measured value.
    The drawback of the device is that photoelectric evaluation is impossible when the distance is below the minimum value.
    In accordance with the patent for the GDR application l / PC5 01 L / 206632, there is a known device for measuring force, in which an interferometer invariant to tilting is installed on a fork-shaped strain gauge. A force is applied to the elastic plate on which the triple prism is mounted. The resolution is determined by the maximum possible deflection of the elastic plate.
    For a rigidly defined geometry of the elastic plate, the resolution is limited by the permissible bending stress of the material. In addition, the interferometer has a complex structure, since the elastic plate and the interferometer are located in a space not relatively far from each other, uniform temperature distribution should be ensured .
    DE-AS 2658629 describes a device for measuring a force or weighing, on the movable part of which at least two mirror images are attached.
    reflectors, each of which is located on the same branch of the interferometer so that when the moving part deviates, both branches of the interferometer change the length in opposite directions.
    Under operating conditions, the use of such devices is associated with difficulties caused by dependence on the ambient temperature and
    influence of movement.
    Using the proposed technical solution, it is possible to significantly increase the resolution at a certain range of force measurement without exceeding the allowable stress of the material. An interferometer having a small geometrical dimensions and installed in the center of the strain gauge is independent of temperature.
    This goal is solved as follows.
    In the device for digital measurement of the force, consisting of a strain sensor, an interferometer, a monochromatic light source of the optical system, photoelectric receivers, a pulse shaping circuit and a reversible counter, on
    in the base of the base one end of a coil spring, rigidly made of crystalline quartz, is rigidly fixed, the second end of which is fixed on a lever connected through
    a hinge with a base, in the center of a coil spring, an interferometer is installed, consisting of an optical divider and a reflector invariant to tilting, the optical divider consisting of an additional plate attached to the base of the main plate and two additional plates connected to it, on the free surfaces of which the mirror layer is partially applied, and the free surface of one of the additional plates is chamfered at a given angle, while the reflector holder is fixed on the lever with a rigidly mounted invariant to prokidyvaniyu reflector, a monochromatic light source, a condenser, a deflection prism, an optical imaging system and the holder fotoelektriches kimi receivers mounted on the base, wherein the symmetry axis deflection prism, and the coil spring interferometer .padayut Sov. In addition, the base, the lever and the reflector holder are made of kieselgut, and the tilt-invariant reflector and optical divider are made of optical quartz. The predetermined angle oi determines the distance of interference fringes. Parallel light obtained using a monochromatic light source and a capacitor is deflected on a deflecting prism and passes through one additional optical divider plate. The beam transmitted according to the degree of application of the mirror layer is reflected on the tilting invariant from (the reflector and passes on another additional optical divider plate. Part of this beam is passed on this divider plate, and the other part of this beam is reflected. The reflected part of the beam passes through the invariant tilting the reflector is reflected on the first additional divider plate, the invariant to tilting reflector again passes and interferes with the missing part of the beam using optical The imaging system, the interference bands are depicted on photoelectric receivers. The measured force applied to the lever causes deformation of the cylindrical helical spring and the corresponding displacement of the reflector invariant to tilting. em 0 with a known method using photoelectric receivers, pulse shaping circuits and a reversible counter. FIG. 1 shows a side view of the device; in fig. 2 - helical screw spring. The base 1 is rigidly mounted in the frame 15. One end of the coil spring 3 is rigidly connected to the base 1, the base plate of the divider 6c (monochromatic light source 7, condenser 8, deflecting prism 9, optical imaging system 10, and holder 11 for photoelectric receivers 12 The other end of the coil spring 3 is rigidly fixed to the lever 2, which is connected with the base 1 by means of the hinge 16 to the base 1. The reflector holder 4 is fastened on the lever 2, which serves to mount the reflector invariant to tilting invariant 5. Op. The divider consists of the main divider 6cm and two additional 6b and 6c plates mounted on the main plate. The surfaces of the divider plates 6b and ba have a partial mirror coating, and the surface of the additional plate 6c is skewed at a given angle cL. The interferometer consisting of an optical divider and the tilt-invariant reflector 5 is installed inside the coil spring 3 so that the distance of the light beam B, falling into the corner of the cube invariant to the tilting reflector 5, is t hinge 16 was equal to the symmetry axis A of the coil spring 3 from the hinge 16. The base 1, the lever 2 and the reflector holder 4 are made of diatomite. The invariant tilting reflector 5 and the optical divider consist of optical quartz. The helical spring 3 is made of crystalline quartz. The cylindrical screw spring 3 (FIG. 2) is made of a quartz tube with a milled groove. The monochromatic light parallel to the capacitor 8 is deflected by the deflecting prism 9 at an angle of 90 and passes the additional divider plate 6c. Missed according to the degree of mirroring
    the beam layer is reflected on the tilt-invariant reflector 5 and passes the additional plate of the divider 6fe. A part of this beam is passed through a divider plate 6b, the other part is reflected.
    The reflected part of the beam passes through the reflector 5 invariant to the tipper, is reflected from the additional plate of the divider 6c, the reflector 5 again invariant to the tilting and interferes with the missing part of the beam. Using an optical imaging system 10, interference fringes are imaged on photoelectric receivers 12.
    The measured force F applied to the lever 2 causes the deformation of the coil spring 3 and the displacement of the tilting invariant reflector 5. The number of interference fringes, which is a direct measure for the measured force, is determined using photoelectric receivers 12, pulse shaping circuits 13, as well as a reversible counter 14.
    It is recognized as an invention according to the results of the examination carried out by the Office for the Invention of the German Democratic Republic.
    权利要求:
    Claims (2)
    [1]
    1. · DEVICE FOR DIGITAL MEASUREMENT OF POWER, consisting of a deformation sensor, an interferometer, a monochromatic light source of the optical system, photoelectric detectors, a pulse generation circuit and a reversible counter, characterized in that on the base installed in the frame is rigidly connected through the hinge to the base, in an interferometer is installed in the center of the coil spring, consisting of an optical divider and a tipping-invariant reflector, an optical divider. consists of a base plate attached to the base and two additional plates connected to it, on the free surfaces of which a mirror layer is partially applied, and the free surface of one of the additional plates is beveled at a given angle, while the reflector holder is fixed to the arm with an invariant rigidly mounted on it a rollover by a reflector, and a monochromatic light source, a capacitor, a deflecting prism, an optical image system and a holder with photoelectric receivers are fixed at one end ilindricheskoy helical spring made of crystalline quartz, the second end of which is mounted on an arm mounted on the base ,, wherein the symmetry axis of the deflecting prism, the coil spring and the interferometer coincide.
    [2]
    2. The device according to η. 1, characterized in that the base lever and reflector holder are made of kieselguht, and the tilt-invariant reflector and optical divider are made of optical quartz.
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    同族专利:
    公开号 | 公开日
    HU189467B|1986-07-28|
    CH647070A5|1984-12-28|
    DE3012811C2|1985-09-26|
    DD143956A1|1980-09-17|
    DE3012811A1|1981-01-29|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DD94905A1|1971-09-06|1973-01-12|
    DE2658629C2|1976-12-23|1979-02-15|Sartorius-Werke Gmbh , 3400 Goettingen|Force measuring or weighing device|DE3828943A1|1988-08-26|1990-03-01|Toledo Werk Gmbh|Force measuring device|
    DE3931021A1|1989-09-16|1991-04-18|Hommelwerke Gmbh|POWER KNIFE|
    DE4129359C2|1991-09-04|1998-07-02|Roland Dr Ing Fuesl|Laser interferometric sensor|
    DE19517467C2|1995-05-12|1998-10-22|Sios Mestechnik Gmbh|Device for measuring mechanical quantities|
    US6522415B1|1998-07-09|2003-02-18|Siemens Aktiengesellschaft|Device and method for determining a relative position of two objects with regard to one another|
    DE19939348B4|1999-04-01|2007-12-27|SIOS Meßtechnik GmbH|Method and device for calibration of applanation tonometers|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    DD21422079A|DD143956A1|1979-07-10|1979-07-10|TRANSMITTER, ESPECIALLY FOR DIGITAL FORCE MEASUREMENT|
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