• 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:
    For a protective device for a person against electric shock due to unintentional contact with live or live parts with increased security, it is provided that at least one electrode (3a, 3b, 3c, 3d, 3e) has at least two signal lines (4a1, 4a2, 4b1, 4b2, 4c1, 4c2, 4d1, 4d2, 4e1, 4e2) is connected to the evaluation unit (6) and in the protective device (1) a test unit (8) is provided, which in a first, with the electrode (3a, 3b, 3c, 3d, 3e) connected signal line (4a1, 4a2, 4b1, 4b2, 4c1, 4c2, 4d1, 4d2, 4e1, 4e2) feeds an electrical test signal (T) and the test unit (8) via the electrode (3a, 3b , 3c, 3d, 3e) and a second test line (4a1, 4a2, 4b1, 4b2, 4c1, 4c2, 4d1, 4d2, 4e1, 4e2) connected to the electrode (3a, 3b, 3c, 3d, 3e) -Response signal (T ') received and evaluated in a test evaluation unit (10), and the test unit (8) as a function of the received test response signal (T indicating) the reliability of the protection device (1).
    公开号:AT521366A4
    申请号:T50518/2018
    申请日:2018-06-21
    公开日:2020-01-15
    发明作者:
    申请人:Adaptive Regelsysteme Ges M B H；
    IPC主号:
    专利说明:

    Summary
    For a protective device for a person against electric shock due to unintentional contact with live or live parts with increased security, it is provided that at least one electrode (3a, 3b, 3c, 3d, 3e) via at least two signal lines (4a1, 4a2, 4b1, 4b2, 4c1, 4c2, 4d1, 4d2, 4e1, 4e2) is connected to the evaluation unit (6) and in the protective device (1) a test unit (8) is provided, which in a first, with the electrode (3a, 3b, 3c, 3d, 3e) connected signal line (4a1,4a2, 4b1, 4b2, 4c1,4c2, 4d1, 4d2, 4e1,4e2) feeds an electrical test signal (T) and the test unit (8) which via the electrode (3a, 3b , 3c, 3d, 3e) and a second test line (4a1, 4a2, 4b1,4b2, 4c1,4c2, 4d1,4d2, 4e1,4e2) connected to the electrode (3a, 3b, 3c, 3d, 3e) -Response signal (T ') received and evaluated in a test evaluation unit (10), and the test unit (8) depending on the received test response signal (T') the Fu nction safety of the protective device (1) indicates.
    Fig. 1
    AR-3993 AT
    Protection against electric shocks
    The subject application relates to a protective device for a person for the prevention of electric shocks with an item of clothing on which at least two electrodes for detecting an electrical variable acting on the person, preferably an electrical voltage or an electric current, are arranged, the at least two electrodes each having are connected to an evaluation unit of the protective device, which evaluates the electrical quantities detected with the electrodes and which, in the event of an impermissible electrical quantity, outputs an output signal in order to trigger a predetermined safety action to protect the person. The invention also relates to a corresponding method for protecting a person against electric shock.
    Plants for the distribution and transmission of electrical energy, generally referred to as an energy transmission system, such as an electrical high-voltage network or sections thereof, require regular maintenance and servicing, which is carried out by appropriate persons, in some cases even during ongoing operation. This goes hand in hand with an inherent danger to such persons, since in the event of accidental contact with live or live parts due to electric shock, there may be a risk of death or at least the risk of injuries, some of which are considerable. Such a potential hazard can of course not only exist in energy transmission systems, but also in other applications where work has to be carried out in areas in which parts that are live or live, in particular high voltage, can be contacted. Methods and devices for protecting people against impermissible electrical currents have therefore become known.
    DE 39 03 025 A1 describes, for example, such a method and such a device, wherein at least two extremities of the person, e.g. Arms or legs, each an electrode is arranged, which are connected to a control unit. A body current through the contact of an external electrical potential is detected by the control device via the electrodes. If such a current flow is detected, the control device activates a switch-off device with which the further current supply to the contact point is interrupted. The electrodes and the control unit can be arranged on a piece of clothing and the connection between the control unit and the shutdown device is wireless. A similar protective device is shown in DE 44 38 063 A1.
    With such protective devices, the safety of people working on live parts or live parts against electric shock due to accidental contact can be increased. However, safety is of course linked to the correct functioning of such safety clothing. Work clothing is subject to high loads
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    AR-3993 AT gene and is often treated with little care by the wearer. This can easily lead to an unnoticed interruption of a signal line between the electrode and the control unit, in particular because the signal line is normally also invisibly integrated into the garment. Such an interruption, however, destroys the function of the protective devices, which may not be noticed by the person wearing it. Under certain circumstances, this can be even more dangerous for the person wearing it than no protective devices at all, if under certain circumstances this is very careless when working in the belief of safe protection.
    It is therefore an object of the present invention to provide a protective device for a person against electric shock due to unintentional contact with live or live parts with increased security.
    This object is achieved according to the invention in that at least one electrode of the protective device is connected to the evaluation unit via at least two signal lines and in the protective device a test unit is provided which feeds an electrical test signal into a first signal line connected to the electrode and the test unit does this the electrode and a second signal line connected to the electrode receive the test response signal and evaluate it in a test evaluation unit, and the test unit indicates the functional reliability of the protective device as a function of the received test response signal. In addition to the protective function of the protective device, the basic functional reliability of the protective device can thus be checked in order to detect any faults in the protective device. This means that errors that may not be recognizable from the outside, such as a break in a signal line, can be recognized and displayed. This increases the safety of the person wearing the protective device.
    In an embodiment that is very easy to implement, a voltage source or a current source is provided in the test unit, which feeds a test voltage or a test current into the first signal line as a test signal. This can be done with simple standard circuits.
    Advantageously, a receiver is provided in the protective device, which receives the output signal and thereby triggers the specified safety action. Alternatively, the protective device can send the output signal to an external receiver, which triggers the specified safety action. This enables a flexible configuration of the protective device depending on the requirements and applications.
    To increase safety, the test unit can insert the test signal into the / 13 2 'at predetermined time intervals and / or at predetermined times and / or selected times.
    AR-3993 AT Feed in and evaluate first signal line. This ensures a practically complete protection function.
    In a particularly advantageous and safe embodiment, a plurality of electrodes are provided on the item of clothing, each electrode being connected to the evaluation unit with at least two signal lines and a test unit for each electrode ensuring the functional reliability of the protective device by feeding in a test signal on a first signal line of the electrode and receiving it and evaluating the received test response signal on a second signal line of the electrode.
    It is particularly advantageous to design the item of clothing as intelligent clothing and to integrate the evaluation unit and / or the test unit as electronics in the item of clothing. This means that comfort can be increased without compromising on safety.
    The present invention is explained in more detail below with reference to FIGS. 1 to 3, which show exemplary, schematic and non-limiting advantageous embodiments of the invention. It shows
    1 shows a protective device according to the invention on an item of clothing,
    2 shows a test unit of the protective device according to the invention and
    3 shows another application of the protective device on an item of clothing.
    1 shows an embodiment of a protective device 1 according to the invention. The protective device 1 is arranged or integrated on an item of clothing 2, here a shirt. Of course, other parts can also be considered as clothing item 2, e.g. a pair of trousers, a sweater, a t-shirt, a jacket, a jumpsuit, etc. Combinations of several parts are also possible as clothing item 2, e.g. a combination of pants and shirt, etc.
    At least two electrodes 3a, 3b are arranged on the item of clothing 2 in order to detect an electrical potential or an electric current. The electrodes 3a, 3b are preferably arranged at exposed points of the item of clothing 2, for example in the region of extremities, that is to say for example on sleeves or trouser legs. For this purpose, an electrode 3a, 3b can preferably be integrated in the item of clothing 2, but can also be applied separately, for example by means of a cuff. In one possible embodiment, an electrode 3a, 3b could be designed as a known Rogowski coil in order to detect an electric current flowing through an extremity or other part of the human body. For this purpose, the electrode 3a, 3b can be placed in a ring around an extremity, e.g. in a waistband of a sleeve or a trouser leg of the item of clothing 2. For the detection of an electrical potential, the electrode 3a, 3b must be in electrically conductive contact with the skin, while e.g. would not be absolutely necessary in the case of a Rogowski coil.
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    AR-3993 AT
    According to the invention, each electrode 3a, 3b is connected to an evaluation unit 6 via at least two signal lines 4a1, 4a2, 4b1,4b2. In the evaluation unit 6, either the electrical potentials detected on the electrodes 3a, 3b or the flowing electrical currents are evaluated. An applied electrical voltage can be determined between two detected electrical potentials. The evaluation can be carried out analogously with suitable hardware or digitally, which requires an A / D conversion and corresponding hardware and software. In the event of a detected dangerous current flow or a dangerous potential difference (voltage) between two electrodes 3a, 3b, which in turn leads to a current flow through the body, the evaluation unit 6 generates an output signal S which can be used to trigger a desired action. For this purpose, of course, corresponding limit values for a permissible potential difference or a permissible current can also be stored or specified in the evaluation unit 6, which can also be changeable.
    The output signal S can be received by a receiver 7, which then triggers a corresponding action. The receiver 7 can be, for example, a switching device that switches the current-carrying or live part in the vicinity of the person to be protected from current. Likewise, the energy supply to the current-carrying or live part could be interrupted or short-circuited depending on the output signal S (which in turn can trigger primary protection of an energy supply system or a voltage supply). In addition, or alternatively, acoustic or visual alarm signals could also be triggered by the output signal S. The receiver 7 can also be part of the protective device 1, for example if a short circuit is generated, but could also be part of the system on which the person carries out a maintenance or repair task. In the latter case, the receiver / could, for example, trip a circuit breaker to interrupt the energy supply system.
    The evaluation unit 6 is preferably held or carried by the person wearing the protective device 1. For example, this could be arranged in a shoulder bag or a backpack, but could also be placed in a pocket of the item of clothing 2 or could advantageously also be integrated in the item of clothing 2, for example in the form of an intelligent item of clothing with integrated electronics.
    The output signal S could be output wired or wireless and can also be evaluated by several receivers 7 in order to take certain, even different, actions.
    By using at least two signal lines 4a1,4a2, 4b1,4b2 per electrode 3a, 3b, the redundancy in the signal transmission already results in a certain increased Si
    AR-3993 AT security. If one of the signal lines 4a1, 4a2, 4b1, 4b2 is interrupted, for example due to a break, the electrical signal detected by the associated electrode 3a, 3b can still be transmitted to the evaluation unit 6 and evaluated there. However, possible creeping errors, for example an increased resistance due to a partial interruption of a signal line 4a1, 4a2, 4b1, 4b2, cannot be reliably detected. Likewise, errors remain undetected in which all signal lines 4a1, 4a2, 4b1, 4b2 of an electrode 3a, 3b are interrupted.
    To increase the safety of the protective device 1, it is therefore provided that a test unit 8, which is implemented as hardware or software in the evaluation unit 6, for example, into one of the signal lines 4a1, 4a2, 4b1,4b2 connected to an electrode 3a, 3b electrical test signal T is fed in, which is transmitted back to the test unit 8 as a test response signal T 'via the connected electrode 3a, 3b and the at least one further signal line 4a1,4a2, 4b1,4b2 connected to the electrode 3a, 3b. The reception of the test response signal T 'can be checked in the test unit 8. If the test signal T does not arrive in the test unit 8 or changes in an inadmissible manner after the feed-in, an interruption or an inadmissible state of a signal line 4a1, 4a2, 4b1, 4b2 can be concluded. An impermissible state of a signal line 4a1, 4a2, 4b1, 4b2 could, for example, be faulty contact to the electrode or to the test unit 8, or even a complete or partial interruption of a signal line 4a1, 4a2, 4b1, 4b2. In any case, a recognized inadmissible state would lead to a warning signal W, for example an acoustic, visual or palpable signal, and / or to an output signal S. For this purpose, it can be defined in the test unit 8 when a test response signal T ″ should be inadmissible for a given test signal T.
    The test unit 8 can of course be integrated as an electrical circuit in the evaluation unit 6, but can also be arranged as an independent unit on the item of clothing 2 or can be integrated into the item of clothing 2 (e.g. again in the case of intelligent clothing).
    An electrical test voltage can be applied as test signal T or an electrical test current can be fed in. A safety extra-low voltage signal or a functional extra-low voltage signal is used in particular as the test signal T. Electrical direct voltage or alternating voltage variables come into question. Not only the basic reception, but also, for example, the amplitude or a possible phase shift of the received test signal T ″ can be evaluated in the evaluation unit 6 or the test unit 8 in order to detect an impermissible state. At the same time, a test voltage (or a test current) could be applied as a test signal T to a signal line 4a1,4a2, 4b1,4b2 and, when the test signal T is received, the flowing current (or the applied current) on the at least one other signal line 4a1, 4a2, 4b1,4b2 Voltage) are measured in order to determine a resistance across the electrode 3a, 3b. From the
    -56/13
    AR-3993 AT determined resistance value could also be inferred to an impermissible state.
    The test signal T could be applied and evaluated at regular, predetermined time intervals. Likewise, a test signal T could be applied and evaluated each time the item of clothing 2 is put on or before any maintenance or repair work. A manual triggering of a function test by the person carrying it can also be implemented. If the evaluation unit 6, or the test unit 8, can be removed from the item of clothing 2, for example in order to replace a battery, then a test signal T can also be connected to the signal lines 4a1, 4a2, 4b1 after connecting the evaluation unit 6, or the test unit 8. 4b2 and the answer can be evaluated. In this way, the functional safety of the protective device 1 can always be guaranteed and the safety of the person wearing it against dangerous electric shocks can be increased.
    2 shows an exemplary embodiment of the test unit 8, here as a separate circuit component. In the test unit 8, a DC voltage source 9 is provided in this example, which applies an electrical test voltage (based on a reference potential in the test unit 8) as a test signal T to a first signal line 4a1, which is connected to an electrode 3a, via a switch 11. A current source could also be provided in the test unit 8 for generating the test signal T. Switch patterns could also be generated via the switch 11, for example a pulsed test signal T. The electrical test voltage of the DC voltage source 9 (again based on the reference potential in the test unit 8) is present as a test response signal T 'on the second signal line 4a2 connected to the electrode 3a , if none of the signal lines 4a, 4b is interrupted. In this case, the test response signal T 'corresponds to the test signal T (apart from possible losses and transmission influences, such as noise). The received test response signal T 'is evaluated in a test evaluation unit 10 (hardware and / or software). It can thus be recognized in the test unit 8 that the protective device 1 is functionally reliable, at least with regard to the two signal lines 4a1,4a2. If an impermissible test response signal T 'is received via the other signal line 4a2, the changed test response signal T' can be evaluated in the test evaluation unit 10 in order to determine a possible error. For example, the amplitude of the received test signal T ″ could be used to determine whether one of the two signal lines 4a, 4b has a creeping break, which leads to an increase in the resistance across the electrode 3a. If the increase in resistance is acceptable from a safety point of view, this can be indicated, but the functional safety of the protective devices 1 cannot be discussed in principle.
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    AR-3993 AT
    The test unit 8 can output a warning signal W, as stated above. Likewise, the test unit 8 can also signal the lack of functional reliability to the evaluation unit 6, as indicated in FIG. 2, which in turn can then output a corresponding output signal S in order to take a desired action. For this purpose, different output signals S can also be provided in order to signal different states of the protective device 1.
    If the electrode 3a is connected to the evaluation unit 6 with more than two signal lines 4a1, 4a2,..., 4an, then the test signal T can be fed in on one of the signal lines and received on at least one other signal line, preferably on all other signal lines and be evaluated.
    If the test signal T fed in on a signal line does not come back or does not return sufficiently on another signal line, the largest electrical signal between two electrodes 3a, 3b can also be temporarily evaluated in the evaluation unit 6 in order to ensure the functionality of the signal line in the event of only a broken signal line To maintain protection device 1. For example, the greatest voltage occurring between the signal lines 4a1 and 4b1 or between the signal lines 4a1 and 4b2 or between the signal lines 4a2 and 4b1 or between the signal lines 4a2 and 4b2 could be used. This state could of course also be indicated with a separate output signal S or warning signal W.
    In the protective device 1, at least one electrode 3a, 3b with at least two signal lines 4a1,4a2, 4b1,4b2 is connected to the evaluation unit 6. All electrodes 3a, 3b are preferably connected to the evaluation unit 6 via at least two signal lines 4a1,4a2, 4b1,4b2.
    In this way, the test unit 8 preferably tests all the connections of the evaluation unit 6 with an electrode 3a, 3b present in the protective device 1 via at least two signal lines 4a1,4a2, 4b1,4b2, but in principle also a separate test unit 8 for each such connection can be provided. If a test unit 8 is provided for a plurality of such connections, then these can be tested one after the other, or if the test unit 8 is designed accordingly, also simultaneously.
    FIG. 3 also shows that, of course, more than two electrodes 3a, 3b, 3c, 3d, 3e can also be provided on the protective device 1. Particularly advantageously, two electrodes 3a, 3b, 3c, 3d are provided on the item of clothing on all extremities of the person to be protected. Likewise, a further electrode 3e is arranged on a hood of the item of clothing 2 in order to be able to also detect contact of the head with a current-carrying part or a part that is live. The electrodes 3a, 3b, 3c, 3d, 3e are preferably each via at least two signal lines 4a1,4a2, 4b1,4b2, 4c1,4c2, / 13 7 '
    AR-3993 AT
    4d1,4d2, 4e1,4e2 connected to the evaluation unit 6, at least one of the electrodes 3a, 3b, 3c, 3d, 3e being wired in this way. Of course, the clothing of the protective device 1 can also be provided at other points and also further electrodes, for which the same then preferably applies analogously. In this exemplary embodiment, the test unit 8 is integrated in the evaluation unit 6.
    A power supply for the evaluation unit 6 and the test unit 8 is not specifically shown in the exemplary embodiments. However, this can be implemented in a suitable manner, for example, by a battery in the protective device 1.
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    AR-3993 AT
    权利要求:
    Claims (9)
    [1]
    claims
    1. Protection device for a person to protect against electric shocks with a piece of clothing (2) on the at least two electrodes (3a, 3b, 3c, 3d, 3e) for detecting an electrical variable acting on the person, preferably an electrical voltage or an electrical current , are arranged, wherein the at least two electrodes (3a, 3b, 3c, 3d, 3e) are each connected to an evaluation unit (6) of the protective device which detects the electrical ones detected by the electrodes (3a, 3b, 3c, 3d, 3e) Evaluates variables and which, in the event of an impermissible electrical variable, outputs an output signal (S) in order to trigger a specified safety action for the protection of the person, characterized in that at least one electrode (3a, 3b, 3c, 3d, 3e) via at least two signal lines ( 4a1,4a2, 4b1, 4b2, 4c1,4c2, 4d1,4d2, 4e1,4e2) is connected to the evaluation unit (6) and in the protective device (1) a test unit (8) is provided, which in a first, with the Elek trode (3a, 3b, 3c, 3d, 3e) connected signal line (4a1, 4a2, 4b1, 4b2, 4c1, 4c2, 4d1,4d2, 4e1,4e2) feeds an electrical test signal (T) and the test unit (8) does this the electrode (3a, 3b, 3c, 3d, 3e) and a second signal line (4a1,4a2, 4b1,4b2, 4c1,4c2, 4d1,4d2) connected to the electrode (3a, 3b, 3c, 3d, 3e), 4e1, 4e2) received test response signal (T ') and evaluated in a test evaluation unit (10), and the test unit (8) depending on the received test response signal (T') indicates the functional reliability of the protective device (1).
    [2]
    2. Protection device according to claim 1, characterized in that a voltage source (9) or a current source is provided in the test unit (8), which as a test signal (T) a test voltage or a test current in the first signal line (4a1,4a2, 4b1, 4b2, 4c1, 4c2, 4d1,4d2, 4e1,4e2).
    [3]
    3. Protection device according to claim 1 or 2, characterized in that in the protection device (1) a receiver (7) is provided which receives the output signal (S) and thereby triggers the predetermined safety action.
    [4]
    4. Protection device according to claim 1 or 2, characterized in that the protection device (1) sends the output signal (S) to an external receiver (7), which triggers the predetermined safety action.
    [5]
    5. Protection device according to one of claims 1 to 4, characterized in that the test unit (8) the test signal (T) at predetermined time intervals and / or at predetermined times and / or selected times in the first signal line (4a1,4a2, 4b1, 4b2, 4c1, 4c2, 4d1,4d2, 4e1,4e2).
    -910 / 13
    AR-3993 AT
    [6]
    6. Protection device according to one of claims 1 to 5, characterized in that a plurality of electrodes (3a, 3b, 3c, 3d, 3e) is provided on the item of clothing (2), each electrode (3a, 3b, 3c, 3d, 3e) with at least two signal lines (4a1,4a2, 4b1, 4b2, 4c1, 4c2, 4d1,4d2, 4e1,4e2) is connected to the evaluation unit (6) and a test unit (8) for each electrode (3a, 3b, 3c , 3d, 3e) the functional reliability of the protective device (1) by feeding in a test signal (T) on a first signal line (4a1,4a2, 4b1, 4b2, 4c1, 4c2, 4d1,4d2, 4e1,4e2) of each electrode (3a, 3b , 3c, 3d, 3e) and receiving and evaluating the received test response signal (Tj on a second signal line (4a1, 4a2, 4b1,4b2, 4c1, 4c2, 4d1,4d2, 4e1, 4e2) of each electrode (3a, 3b, 3c , 3d, 3e) checks and displays.
    [7]
    7. Protection device according to one of claims 1 to 6, characterized in that the item of clothing (2) is designed as intelligent clothing and the evaluation unit (6) and / or the test unit (8) is integrated as electronics in the item of clothing (2).
    [8]
    8. A method for protecting a person wearing a protective device (1) according to one of claims 1 to 7 for protection against electric shock, characterized in that for checking the functional reliability of the protective device (1) for at least one electrode (3a, 3b, 3c , 3d, 3e) on the item of clothing (2) of the protective device (1), which is connected to the evaluation unit (6) with at least two signal lines (4a1,4a2, 4b1, 4b2, 4c1, 4c2, 4d1,4d2, 4e1, 4e2) , a test signal (T) is fed into one of the signal lines (4a1,4a2, 4b1,4b2, 4c1,4c2, 4d1, 4d2, 4e1,4e2), that the test signal (T) on one of the other signal lines (4a1,4a2, 4b1,4b2, 4c1.4c2, 4d1, 4d2, 4e1.4e2) received test response signal (Tj is evaluated and that the inadequate functional reliability of the protective device (1) is indicated in the case of an impermissible test response signal (Tj.
    [9]
    9. The method according to claim 8, characterized in that a predetermined safety action is carried out in the event of a lack of functional safety.
    Adaptive Regelsysteme Gesellschaft m.b.H.

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    Adaptive Regelsysteme Gesellschaft m.b.H.

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    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    DE2709815A1|1977-03-07|1978-09-21|Udden Ab|Isolating protection circuit preventing electric shock - measures voltage between two electrodes on workers skin and triggers cut=out when limit is exceeded|
    DE3903025A1|1989-02-02|1990-08-09|Asea Brown Boveri|Method for protecting individuals|
    US4175255A|1977-09-06|1979-11-20|Branderud Nils P|Device to protect against flow of current|
    DE4438063A1|1994-10-25|1995-05-24|Rene Haimerl|Wire free protection apparatus for work on voltage carrying parts|
    FR2786068B1|1998-11-23|2001-01-12|Electronique Angelidis Et Sarr|PERSONAL PROTECTIVE EQUIPMENT AGAINST RISK OF ELECTRIC SHOCK OR BURNS|
    US7766905B2|2004-02-12|2010-08-03|Covidien Ag|Method and system for continuity testing of medical electrodes|
    US8154305B2|2010-07-16|2012-04-10|General Electric Company|Systems, methods, and apparatus for connection fault self-monitoring with DC bias current|AT523585B1|2020-03-12|2021-11-15|Adaptive Regelsysteme Ges M B H|Safety device for working on electrical systems|
    法律状态:
    优先权:
    申请号 | 申请日 | 专利标题
    ATA50518/2018A|AT521366B1|2018-06-21|2018-06-21|Protection against electric shocks|ATA50518/2018A| AT521366B1|2018-06-21|2018-06-21|Protection against electric shocks|
    PCT/EP2019/066116| WO2019243379A1|2018-06-21|2019-06-19|Protective device against electric shocks|
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