FR2628534A1 - Portable electronic polarity detector for checking vehicle wiring - has probe, two leds with protecting resistors, and clip-on connections on vehicle battery - Google Patents

Portable electronic polarity detector for checking vehicle wiring - has probe, two leds with protecting resistors, and clip-on connections on vehicle battery Download PDF

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Publication number
FR2628534A1
FR2628534A1 FR8802935A FR8802935A FR2628534A1 FR 2628534 A1 FR2628534 A1 FR 2628534A1 FR 8802935 A FR8802935 A FR 8802935A FR 8802935 A FR8802935 A FR 8802935A FR 2628534 A1 FR2628534 A1 FR 2628534A1
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FR
France
Prior art keywords
diodes
connection
diode
vehicle battery
clip
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.)
Granted
Application number
FR8802935A
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French (fr)
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FR2628534B1 (en
Inventor
Yves Dupont
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.)
Automobiles Peugeot SA
Automobiles Citroen SA
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Automobiles Peugeot SA
Automobiles Citroen SA
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Publication date
Application filed by Automobiles Peugeot SA, Automobiles Citroen SA filed Critical Automobiles Peugeot SA
Priority to FR8802935A priority Critical patent/FR2628534B1/en
Publication of FR2628534A1 publication Critical patent/FR2628534A1/en
Application granted granted Critical
Publication of FR2628534B1 publication Critical patent/FR2628534B1/en
Anticipated expiration legal-status Critical
Expired - Fee Related legal-status Critical Current

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    • 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
    • G01R19/14—Indicating direction of current; Indicating polarity of voltage
    • 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
    • G01R19/155—Indicating the presence of voltage

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Testing Of Short-Circuits, Discontinuities, Leakage, Or Incorrect Line Connections (AREA)

Abstract

Two light emitting diodes (2) (3) and two protecting resistors (8) (9) are provided. The cathode of one diode is connected to the negative pole of the vehicle battery using a clip-on connection (5) while the anode of the second diode (3) is connected to the positive pole of the same battery with a similar clip on connection (6). The remaining terminals of each diode are connected to an external probe (4) via the protecting resistors. Both diodes come on when initial connection is made to the vehicle battery thus confirming correct connection. When the external probe is applied to a test point on the vehicle wiring only one of the diodes lights thus indicating the polarity. ADVANTAGE - Tester uses vehicle battery, minimises changes in connections when testing in different situations, and can detect continuous or intermittent potentials.

Description

L'invention concerne un appareil de controle de la présence et de la polarité d'une tension électric:ue continue ou discontinue. en un point d'un circuit électri- que, notamment pour tester les circuits d'un véhicule automobile.The invention relates to an apparatus for monitoring the presence and polarity of an electric voltage: continuous or discontinuous. at a point on an electrical circuit, in particular for testing the circuits of a motor vehicle.

Les appareils de ce type comportent, en général, un bottier contenant le circuit de controle et au moins un témoin lumineux, tel qu'une lampe néon ou une diode électroluminescente, un conducteur de liaison à une tension de référence et une pointe ou plot conducteur permettant la mise en contact avec le point a controler d'un circuit électrioue. De tels instruments sont utilisés, par exemple, dans l'industrie automobile pour vérifier le branchement correct des circuits électriques.Apparatuses of this type generally comprise a case containing the control circuit and at least one indicator light, such as a neon lamp or a light-emitting diode, a connecting conductor at a reference voltage and a conductive tip or pad allowing contact with the point to be controlled of an electrious circuit. Such instruments are used, for example, in the automotive industry to verify the correct connection of electrical circuits.

On connaît un appareil de ce tvpe permettant de tester la polarité ou la ph2se dune tension dans lequel l'indica- tion est fournie par deux diodes électroluminescentes montées en parallèle et en sens inverse idune de l'autre et qui utilise comme tension de référence une tensio alternative.Ce=i est un inconvénient pour l'utilisation évoquée plus haut car cela nécessite l'amplantation d'une alimentation spéciale sur le poste de travail alors oue l'on dispose déjà, à cette place d'une source d'alimentation continue. la batterie du véhicule en l'occurence, Dn connalt étaiement des appareils capables d'utilisa- comme tension de référence une tension continue mais ceux-ci ne se branchent oue sur un des pôles de la source, de soute que si l'on veut tester un point de circuit devant être relié å ia masse, on doit brancher le conducteu- de contrôle sur le pôle positif et inversement.Ceci occasionne de fréquents chanoements de branchement et des risques d'erreur car il nSy a pas d'autocontrole ou systéme en cas de brancnement défectueux du circuit de référence.An apparatus of this type is known which makes it possible to test the polarity or the ph2se of a voltage in which the indication is supplied by two light-emitting diodes mounted in parallel and in opposite direction to each other and which uses as reference voltage a alternative tensio.Ce = i is a drawback for the use mentioned above because it requires the installation of a special power supply on the workstation so oue we already have, in this place a power source keep on going. the vehicle battery in this case, Dn connalt propping devices capable of using as reference voltage a DC voltage but these can only be connected to one of the poles of the source, in the hold only if you want test a circuit point to be connected to earth, you must connect the control conductor to the positive pole and vice versa. This causes frequent changes of connection and risk of error because there is no self-checking or system in the event of faulty connection of the reference circuit.

Ces problèmes sont résolus par un appareii de contrôle oui comporte un contact testeur apte a Entre relié au point à contrôler, monté en série avec un circuit électrique comprenant deux diodes électroluminescentes montées en sens inverse l'une de l'autre. Selon l'invention, la cathode de l'une des diodes est branchée au pôle négatif d'une source de courant continu au moyen d'un conducteur muni d'un moyen de liaison amovible, tandis qu'un second conducteur muni d'un même moyen de liaison assure le branchement de l'anode de la seconde diode au pole positif de ladite source. L'électrode opposée de chacune des diodes est ensuite connectée à une borne d'une résistance dont l'autre borne est reliée à un point commun de jonction auquel est également électriquement relié le contact de test.These problems are solved by a control device yes, comprising a tester contact capable of being connected to the point to be checked, connected in series with an electrical circuit comprising two light-emitting diodes mounted in opposite directions to one another. According to the invention, the cathode of one of the diodes is connected to the negative pole of a direct current source by means of a conductor provided with a removable connection means, while a second conductor provided with a same connecting means ensures the connection of the anode of the second diode to the positive pole of said source. The opposite electrode of each of the diodes is then connected to a terminal of a resistor, the other terminal of which is connected to a common junction point to which the test contact is also electrically connected.

De façon préférentielle les diodes sont de couleurs differentes. Preferably the diodes are of different colors.

Avantageusement, dans l'application visée pour le contrôle des circuits électriques d'un véhicule automobile, la source d-alimentation continue est la batterie du vbhicu- le.Advantageously, in the application intended for controlling the electrical circuits of a motor vehicle, the source of continuous power is the vehicle battery.

D'autres particularités et avantages de l'invention apparaltront à la lecture de la description qui va suivre en référence à la figure annexée qui représente un schem!a d'un appareil selon l'invention, donné a titre d'exemple.Other features and advantages of the invention will appear on reading the description which follows with reference to the appended figure which represents a diagram of an apparatus according to the invention, given by way of example.

Un boîtier 1 auquel est donné une forme compacte et facilement préhensible contient un circuit électrique comprenant deux diooes électroluminescentes 2 et z disposées de façon a titre visibles de l'extérieur du bolier. Un contact de test 4 constitué, par exemple. par une pointe en matériau conducteur, fait saillie hors du bottier 1. Celui-ci porte encore deux câbles conducteurs 5 et 6 dont l'une des extrémités est munie d'un moyen de liaison amovible (non représenté) avec les bornes d'une source de cquarant continu 7, par exemple une batterie de véhicule automobile.Les moyens de liaison peuvent être des pinces dites "crocodiles" de couleurs différentes, par exemple conformément å la normalisation internationale, verte pour celle qui doit ttre reliée au pôle négatif de la batterie et rouge pour celle qui doit tre reliée au pole positif, de façon à éviter les erreurs de branchement -par inversion.A box 1 which is given a compact and easily graspable shape contains an electrical circuit comprising two light-emitting diodes 2 and z arranged in a visible manner from the outside of the bolier. A test contact 4 constituted, for example. by a point made of conductive material, protrudes from the case 1. The latter still carries two conductive cables 5 and 6, one end of which is provided with a removable connection means (not shown) with the terminals of a source of continuous quarantine 7, for example a motor vehicle battery. The connection means can be so-called "crocodile" clips of different colors, for example in accordance with international standardization, green for the one which must be connected to the negative pole of the battery and red for the one which must be connected to the positive pole, so as to avoid connection errors - by inversion.

La cathode de la diode 2 est reliée au pôle négatif de la batterie 7, par l'intermédiaire du conducteur 5, tandis que le conducteur 6 relie l'anode de la diode 3 au pole positif de ladite batterie. L'électrode opposée de chacune des diodes est connectée à une borne d'une résistance, respectivement 8 et 9, dont l'autre borne est branchée à un point commun de jonction. Les résistances e et 9 qui protègent les ci odes contre les surtensions ont la mEme valeur ohmique dans la mesure od les diodes 2 et 3 ont les mêmes caractéristiques.Le contact de test 4 est également relié électriquement au point de jonction A. De pré+é- rence, la diode 2 connectée au pole négatif de la batterie 7 sera de couleur rouge et la diode 3, reliée au pole positif sera verte.The cathode of the diode 2 is connected to the negative pole of the battery 7, via the conductor 5, while the conductor 6 connects the anode of the diode 3 to the positive pole of the said battery. The opposite electrode of each of the diodes is connected to a terminal of a resistor, respectively 8 and 9, the other terminal of which is connected to a common junction point. The resistors e and 9 which protect the ci odes against overvoltages have the same ohmic value in the measurement od the diodes 2 and 3 have the same characteristics. The test contact 4 is also electrically connected to the junction point A. Pre + erence, diode 2 connected to the negative pole of battery 7 will be red in color and diode 3, connected to the positive pole will be green.

L'appareil fonctionne de la façon suivante. lorsoue l'on branche les conducteurs 5 et 6 aux bornes appropriées de la batterie 7, si le branchement est correct les deux diodes s'éclairent assurant ainsi un autocontrole positif du fonctionnement de l'appareil. Lorsque le contact ce test 4 est appliqué sur un point de circuit dont la polarité est négative, un courant circule dans la -branche 11 du circuit comprenant la diode verte o qui reste allumée alors oue la diode rouge 2 reliée au pôle négatif de la source d'alimentation s'éteint. InversementZ si le contact de test 4 touche un point de polarité positivE, le courant circule dans la branche 10 du circuit, la diode rouge 2 reste allumée tandis que la diode verte v s'é- teint.L'opérateur saura ainsi de façon particulièrement claire et sans manipulation intermédiaire quelle est la polarité de chaque point du circuit testé.The device operates as follows. when the conductors 5 and 6 are connected to the appropriate terminals of the battery 7, if the connection is correct the two diodes light up thus ensuring a positive self-checking of the operation of the device. When the contact this test 4 is applied to a circuit point whose polarity is negative, a current flows in the branch 11 of the circuit comprising the green diode o which remains lit then oue the red diode 2 connected to the negative pole of the source power turns off. Conversely, if the test contact 4 touches a point of positive polarity, the current flows in branch 10 of the circuit, the red diode 2 remains lit while the green diode v goes out. The operator will thus know particularly clear and without intermediate manipulation what is the polarity of each point of the circuit tested.

Dans le cas ot le circuit a contrôler délivre un signal électrique discontinu, comme par exemple, dans un véhicule automobile, le signal de commande de l'allumage ou de l'injection, lorsque le signal est présent au point à tester, seule reste éclairée la diode correspondant à la polarité de celui-ci. Durant la période correspondant à l'absence du signal, les deux diodes sont éclairées, de sorte qu'une répétition de ces deux états fait apparaktre un allumage continu de la diode correspondant à la polarité du signal testé, tandis - que l'autre clignote indiquant le carattbre discontinu de la tension à controler.In the case where the circuit to be controlled delivers a discontinuous electrical signal, as for example, in a motor vehicle, the ignition or injection control signal, when the signal is present at the point to be tested, only remains lit the diode corresponding to the polarity thereof. During the period corresponding to the absence of the signal, the two diodes are lit, so that a repetition of these two states makes appear a continuous lighting of the diode corresponding to the polarity of the tested signal, while - the other flashes indicating the discontinuous dimension of the voltage to be checked.

On obtient ainsi un annareil simple et sur laissant e l'utilisateur une grande liberté. de mouvement et suppriment les risques d'erreur inhérents aux appareils antérieurs. A simple and safe device is thus obtained, leaving the user great freedom. movement and eliminate the risk of error inherent in previous devices.

Claims (4)

REVENDICATIONS I - Appareil de contrôle de la présence et de la polariti d'une tension électrique continue ou discontinue, en un point d'un circuit électrique comportant un contact testeur apte b titre relié au point v contrôler mont en strie avec un circuit électrique comprenant deux diodes électroluminescentes montées en sens inverse l'une de l'autre, caractérisé en ce que la cathode de l'une des diodes 2 est branchée au pole négatif d'une source de courant continu BU moyen d'un conducteur 5 muni d'un moyen de liaison amovible tandis qu'un second conducteur 6 muni d'un mEme moyen de liaison assure le branchement de l'anode de la seconde diode a au pôle positif de ladite source et en ce que l'électrode opposée de chacune des diodes est connectée à une borne d'une résistance; respectivement e et , dont l'autre borne est reliée a un point commun de jonction A auquel est également électrique- ment relié le-contact de test 4. I - Apparatus for controlling the presence and the polarity of a continuous or discontinuous electrical voltage, at a point on an electrical circuit comprising a tester contact suitable for connection connected to the point v to control mounted in series with an electrical circuit comprising two light emitting diodes mounted in opposite directions to each other, characterized in that the cathode of one of the diodes 2 is connected to the negative pole of a direct current source BU by means of a conductor 5 provided with a removable connection means while a second conductor 6 provided with the same connection means ensures the connection of the anode of the second diode a to the positive pole of said source and in that the opposite electrode of each of the diodes is connected to a terminal of a resistor; respectively e and, the other terminal of which is connected to a common junction point A to which the test contact 4 is also electrically connected. 2 - Appareil de controle selon le revendication 1, caractérisé en ce que les diodes sont de couleurs différentes.2 - Control device according to claim 1, characterized in that the diodes are of different colors. 3 - Appareil selon la revendication 1 ou 2, caractérisé en ce que les résistances 8 et 9 ont la mEme valeur ohmique.3 - Apparatus according to claim 1 or 2, characterized in that the resistors 8 and 9 have the same ohmic value. 4 - Appareil selon l'une des revendications précédentes; caractérisé en ce que la source de tension continue 7 est une batterie de véhicule automobile. 4 - Apparatus according to one of the preceding claims; characterized in that the DC voltage source 7 is a motor vehicle battery.
FR8802935A 1988-03-08 1988-03-08 APPARATUS FOR MONITORING THE PRESENCE AND THE POLARITY OF A CONTINUOUS OR DISCONTINUOUS ELECTRIC VOLTAGE Expired - Fee Related FR2628534B1 (en)

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Application Number Priority Date Filing Date Title
FR8802935A FR2628534B1 (en) 1988-03-08 1988-03-08 APPARATUS FOR MONITORING THE PRESENCE AND THE POLARITY OF A CONTINUOUS OR DISCONTINUOUS ELECTRIC VOLTAGE

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FR8802935A FR2628534B1 (en) 1988-03-08 1988-03-08 APPARATUS FOR MONITORING THE PRESENCE AND THE POLARITY OF A CONTINUOUS OR DISCONTINUOUS ELECTRIC VOLTAGE

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FR2628534A1 true FR2628534A1 (en) 1989-09-15
FR2628534B1 FR2628534B1 (en) 1990-09-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114217245A (en) * 2021-12-23 2022-03-22 广东电网有限责任公司江门供电局 System for quickly checking user-to-user interaction of newly-built wiring

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2835007A1 (en) * 1978-08-10 1980-02-28 Christian Beha Tech Neuentwick Voltage testing and display appts. - has two antiparallel LED between its terminals, with series circuits in parallel, each with Zener diode
DE3301154A1 (en) * 1982-01-21 1983-07-28 Mulex Instruments Co., Ltd., Tokyo Electrical testing device

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2835007A1 (en) * 1978-08-10 1980-02-28 Christian Beha Tech Neuentwick Voltage testing and display appts. - has two antiparallel LED between its terminals, with series circuits in parallel, each with Zener diode
DE3301154A1 (en) * 1982-01-21 1983-07-28 Mulex Instruments Co., Ltd., Tokyo Electrical testing device

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN114217245A (en) * 2021-12-23 2022-03-22 广东电网有限责任公司江门供电局 System for quickly checking user-to-user interaction of newly-built wiring
CN114217245B (en) * 2021-12-23 2023-08-04 广东电网有限责任公司江门供电局 System for checking household serial number by uniformly building new assembly line

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