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WO2019243379A1 - Dispositif de protection contre les électrocutions - Google Patents

Dispositif de protection contre les électrocutions Download PDF

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Publication number
WO2019243379A1
WO2019243379A1 PCT/EP2019/066116 EP2019066116W WO2019243379A1 WO 2019243379 A1 WO2019243379 A1 WO 2019243379A1 EP 2019066116 W EP2019066116 W EP 2019066116W WO 2019243379 A1 WO2019243379 A1 WO 2019243379A1
Authority
WO
WIPO (PCT)
Prior art keywords
test
signal
electrode
protective device
unit
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2019/066116
Other languages
German (de)
English (en)
Inventor
Ulrich Klapper
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Adaptive Regelsysteme GmbH
Original Assignee
Adaptive Regelsysteme GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Adaptive Regelsysteme GmbH filed Critical Adaptive Regelsysteme GmbH
Publication of WO2019243379A1 publication Critical patent/WO2019243379A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/28—Testing of electronic circuits, e.g. by signal tracer
    • G01R31/282—Testing of electronic circuits specially adapted for particular applications not provided for elsewhere
    • G01R31/2827—Testing of electronic protection circuits
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/12—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to undesired approach to, or touching of, live parts by living beings
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
    • G01R31/50—Testing of electric apparatus, lines, cables or components for short-circuits, continuity, leakage current or incorrect line connections
    • G01R31/54—Testing for continuity
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/16—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection responsive to fault current to earth, frame or mass
    • A—HUMAN NECESSITIES
    • A41—WEARING APPAREL
    • A41D—OUTERWEAR; PROTECTIVE GARMENTS; ACCESSORIES
    • A41D13/00—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches
    • A41D13/008—Professional, industrial or sporting protective garments, e.g. surgeons' gowns or garments protecting against blows or punches protecting against electric shocks or static electricity
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
    • G01R19/00—Arrangements for measuring currents or voltages or for indicating presence or sign thereof
    • G01R19/145—Indicating the presence of current or voltage
    • G01R19/15—Indicating the presence of current
    • G—PHYSICS
    • G08—SIGNALLING
    • G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
    • G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
    • G08B21/02—Alarms for ensuring the safety of persons

Definitions

  • the subject application relates to a protective device for a person for preventing 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 electrical current, are arranged, the at least two electrodes are each 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 shocks.
  • Plants for the distribution and transmission of electrical energy require regular maintenance and servicing, which is carried out by appropriate people, in some cases even during ongoing operation. This is associated with an inherent danger to such persons, since in the event of unintentional 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 which are live or live, in particular high voltage, can be contacted. Therefore, methods and devices for protecting people against impermissible electrical currents have become known.
  • DE 39 03 025 A1 describes, for example, such a method and such a device, with at least two extremities of the person, e.g. Arms or legs, each an electrode is arranged, which are connected to a control device.
  • a body current through the contact of an external electrical potential is detected by the control unit 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.
  • At least one electrode of the protective device is connected to the evaluation unit via at least two signal lines and a test unit is provided in the protective device, which feeds an electrical test signal into a first signal line connected to the electrode and the test unit receives the test response signal transmitted via the electrode and a second signal line connected to the electrode and evaluates 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.
  • 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 also be detected and displayed. This increases the safety of the person wearing the protective device.
  • 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.
  • a receiver is advantageously provided in the protective device, which receives the output signal and thereby triggers the specified safety action.
  • 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.
  • the test unit can insert the test signal into the test device at predetermined time intervals and / or at predetermined times and / or selected times Feed in and evaluate first signal line. This ensures a practically complete protection function.
  • 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 Electrode and receiving and evaluating the received test response signal on a second signal line of the electrode checks and displays.
  • FIGS. 1 to 3 show exemplary, schematic and non-limiting advantageous embodiments of the invention. It shows
  • FIG. 1 shows a protective device according to the invention on an item of clothing
  • FIG 3 shows another application of the protective device on an item of clothing.
  • the protective device 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.
  • clothing item 2 e.g. a pair of pants, a sweater, a T-shirt, a jacket, a jumpsuit, etc.
  • Combinations of several parts can also be considered 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.
  • 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.
  • 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.
  • 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.
  • the evaluation unit 6 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 determine a desired Trigger action.
  • corresponding limit values for a permissible potential difference or a permissible current which can also be changeable, can of course also be stored or specified in the evaluation unit 6.
  • the output signal S can be received by a receiver 7, which then triggers a corresponding action.
  • the receiver 7 can, for example, be a switching device which switches the current-carrying or live part in the vicinity of the person to be protected from current.
  • 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).
  • 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 7 could, for example, trigger 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.
  • 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.
  • the redundancy in the signal transmission already results in a certain increased security 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.
  • 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 connected to an electrode 3a, 3b, 4b2, an 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.
  • test signal T does not arrive in the test unit 8 or changes in an impermissible manner after feeding in, an interruption or an impermissible 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 with the electrode or the test unit 8, or even a complete or partial interruption of a signal line 4a1, 4a2, 4b1, 4b2.
  • a recognized impermissible state would lead to a warning signal W, for example an acoustic, visual or palpable signal, and / or to an output signal S.
  • a test response signal T should be inadmissible for a given test signal T.
  • 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 integrated into the item of clothing 2 (e.g. again in the case of intelligent clothing).
  • An electrical test voltage or an electrical test voltage can be applied as the test signal T.
  • Test current can be fed.
  • 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 can be evaluated in the evaluation unit 6, or the test unit 8, but also, for example, also the amplitude or a possible phase shift of the received test signal T in order to detect an impermissible state. As it were, as
  • Test signal T a test voltage (or a test current) are applied to a signal line 4a1, 4a2, 4b1, 4b2 and when the test signal T is received on the at least one other signal lines 4a1, 4a2, 4b1, 4b2 the flowing current (or the applied voltage) are measured in order to determine a resistance across the electrode 3a, 3b. From the The resistance value determined could also be inferred from an impermissible state.
  • 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 test of a function test can also be carried out by the person carrying it. 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 after the evaluation unit 6, or the test unit 8, has been connected. 4b1, 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.
  • test unit 8 An exemplary embodiment of the test unit 8, here as a separate circuit component, is shown in FIG.
  • 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.
  • 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.
  • the changed test response signal T can be evaluated in the test evaluation unit 10 in order to determine a possible error.
  • 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 for safety reasons, this can be indicated, but the functional safety of the protective devices 1 cannot be discussed in principle.
  • the test unit 8 can output a warning signal W, as stated above.
  • 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.
  • different output signals S can also be provided in order to signal different states of the protective device 1.
  • test signal T can be fed in on one of the signal lines and on at least one other signal line, preferably on all other signal lines, are received and evaluated.
  • the largest electrical signal between two electrodes 3a, 3b can also be evaluated temporarily 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.
  • 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 its own output signal S or warning signal W.
  • 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.
  • test unit 8 is preferably used to test 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 one for each such connection Test unit 8 can be provided. If a test unit 8 is provided for a plurality of such connections, then these can be checked one after the other, or, if the test unit 8 is configured 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.
  • two electrodes 3a, 3b, 3c, 3d are provided on the garment on all extremities of the person to be protected.
  • a further electrode 3e is arranged on a hood of the item of clothing 2 in order to be able to 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, 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.
  • the clothing 2 of the protective device 1 can also be provided at other points and also further electrodes, for which the same then preferably applies analogously.
  • 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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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Business, Economics & Management (AREA)
  • Emergency Management (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)

Abstract

L'invention concerne un dispositif de protection pour une personne contre l'électrocution par contact imprévu avec des pièces sous tension ou conductrices de courant avec une sécurité accrue. Selon l'invention, au moins une électrode (3a, 3b, 3c, 3d, 3e) est connectée à l'unité d'évaluation (6) par le biais d'au moins deux câbles de signal (4a1, 4a2, 4b1, 4b2, 4c1, 4c2, 4d1, 4d2, 4e1, 4e2) et une unité d'essai (8) qui injecte un signal électrique d'essai (T) dans un premier câble de signal (4a1, 4a2, 4b1, 4b2, 4c1, 4c2, 4d1, 4d2, 4e1, 4e2) connecté à l'électrode (3a, 3b, 3c, 3d, 3e) est prévue dans le dispositif de protection (1), et l'unité d'essai (8) reçoit le signal de réponse d'essai (T') transmis par le biais de l'électrode (3a, 3b, 3c, 3d, 3e) et d'un deuxième câble de signal (4a1, 4a2, 4b1, 4b2, 4c1, 4c2, 4d1, 4d2, 4e1, 4e2) connecté à l'électrode (3a, 3b, 3c, 3d, 3e) et l'évalue dans une unité d'évaluation d'essai (10), et l'unité d'essai (8) affiche la sécurité fonctionnelle du dispositif de protection (1) en fonction du signal de réponse d'essai (T') reçu.
PCT/EP2019/066116 2018-06-21 2019-06-19 Dispositif de protection contre les électrocutions Ceased WO2019243379A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ATA50518/2018A AT521366B1 (de) 2018-06-21 2018-06-21 Schutzvorrichtung gegen Stromschläge
ATA50518/2018 2018-06-21

Publications (1)

Publication Number Publication Date
WO2019243379A1 true WO2019243379A1 (fr) 2019-12-26

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2019/066116 Ceased WO2019243379A1 (fr) 2018-06-21 2019-06-19 Dispositif de protection contre les électrocutions

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AT (1) AT521366B1 (fr)
WO (1) WO2019243379A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021180750A1 (fr) * 2020-03-12 2021-09-16 Adaptive Regelsysteme Gesellschaft M.B.H. Dispositif de sécurité pour travail sur des systèmes électriques
SE2250439A1 (en) * 2022-04-07 2023-10-08 Sailport Ab Protection device for a heatable clothing garment

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4175255A (en) * 1977-09-06 1979-11-20 Branderud Nils P Device to protect against flow of current
DE3903025A1 (de) 1989-02-02 1990-08-09 Asea Brown Boveri Verfahren zum schutz von personen
DE4438063A1 (de) 1994-10-25 1995-05-24 Rene Haimerl Drahtlose Schutzvorrichtung zur Arbeit an spannungsführenden Teilen
FR2786068A1 (fr) * 1998-11-23 2000-05-26 Electronique Angelidis Et Sarr Equipement de protection individuelle contre les risques d'electrocution ou de brulures
EP1566645A2 (fr) * 2004-02-12 2005-08-24 Sherwood Services AG Procédé et dipositif de test de la continuité d'électrodes médicales
EP2418502A2 (fr) * 2010-07-16 2012-02-15 General Electric Company Systèmes, procédés et appareil d'auto-surveillance de pannes de connexion avec courant de polarisation CC

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2709815A1 (de) * 1977-03-07 1978-09-21 Udden Ab Vorrichtung zum schutz vor stromschlag

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4175255A (en) * 1977-09-06 1979-11-20 Branderud Nils P Device to protect against flow of current
DE3903025A1 (de) 1989-02-02 1990-08-09 Asea Brown Boveri Verfahren zum schutz von personen
DE4438063A1 (de) 1994-10-25 1995-05-24 Rene Haimerl Drahtlose Schutzvorrichtung zur Arbeit an spannungsführenden Teilen
FR2786068A1 (fr) * 1998-11-23 2000-05-26 Electronique Angelidis Et Sarr Equipement de protection individuelle contre les risques d'electrocution ou de brulures
EP1566645A2 (fr) * 2004-02-12 2005-08-24 Sherwood Services AG Procédé et dipositif de test de la continuité d'électrodes médicales
EP2418502A2 (fr) * 2010-07-16 2012-02-15 General Electric Company Systèmes, procédés et appareil d'auto-surveillance de pannes de connexion avec courant de polarisation CC

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021180750A1 (fr) * 2020-03-12 2021-09-16 Adaptive Regelsysteme Gesellschaft M.B.H. Dispositif de sécurité pour travail sur des systèmes électriques
US12092683B2 (en) 2020-03-12 2024-09-17 Adaptive Regelsysteme Gesellschaft M.B.H. Safety device for work on electrical systems
SE2250439A1 (en) * 2022-04-07 2023-10-08 Sailport Ab Protection device for a heatable clothing garment
WO2023195893A1 (fr) * 2022-04-07 2023-10-12 Sailport Ab Dispositif de protection pour article vestimentaire pouvant être chauffé immergé dans l'eau
SE545762C2 (en) * 2022-04-07 2024-01-02 Sailport Ab Protection device for a heatable clothing garment

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Publication number Publication date
AT521366A4 (de) 2020-01-15
AT521366B1 (de) 2020-01-15

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