SU1397854A1 - Device for checking electric circuits of cables and bundled conductors - Google Patents

Abstract

This invention relates to instrumentation technology. The purpose of the invention is to increase the speed and reliability of control by using a step finder with four contact fields, as well as controlling two cycles. The device contains contact fields 1-1, ..., 1-4, RC-chains, necessary for elimination of spurious signals, and consisting of 3.1-Z.p load resistors and 4.1 capacitors. ..,four. p, and signaling the elements 5.1, ..., 5.n, for example, a cold cathode tiratron. 1 il. (L

Description

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The invention relates to a test measuring technique, namely, devices for checking the correctness of the electrical wiring of connectors and lugs to the wires of a harness, and can be used in the automotive industry.

The aim of the invention is to simplify. Improving the speed and accuracy of control through the use of a step finder with four contact fields, as well as control over two cycles.

The drawing is a schematic diagram of the device.

The device contains connected to a positive potential current source first 1-1, second 1-2, third 1-3 and fourth 1-4 contact fields, contacts 1.1.1 - 1.1.p, 1.2.1-1.2.P, 1.3.1 -1.3.P, 1.4.1-1.4.P contact fields, test wires 2.1-2.P, RC-chains, consisting of 3,1-Z.p load resistors and 4.1-4.P capacitors, signal elements. 5.1-5.P (for example, a MTX-90 cold cathode thyratron, as a storage and signaling device) and con

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At the moment when the contact brushes of all fields are at the contact

1.1.1, where i 1, ..., 4 which conditionally corresponds to the verification of the first wire 2.1, if the wire 2.1 is properly connected, the current from the positive pole of the power source will go through the circuit: the first field contacts 1-1, the tested wire 2.1, the second field 1-2, contacts of the third field 13, load resistor 3.1, capacitor 4.1 (if the contact is not closed

6.1 switch), the negative pole of the power source. After charging the capacitor 4.1, the signaling element 5.1 of the signal unit turns on. This means that the first wire is free of entanglement and entanglement. In the next step of the step finder, the contact brushes of all fields will be at the contact

1.1.2, and the second wire is checked in the same way as the first, etc. to nth wire.

When the wire is closed or entangled, the closed circuit is not created and the corresponding signal element of the signal unit does not light up. Numbered signaling elements

cycles 6.1-6.P switch type of pro jg cops in accordance with the numbering of

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The terminal for connecting the positive output of the power source is connected to the brush of the first contact field 1-1, the contacts of the first contact field 1-1 are connected to the contacts of the second contact field 1-2 through the terminals for connecting the test object, the brush of the second contact field 1-2

connected to the brush of the third contact FIELD 1-3, the contacts of which are connected to the first outputs of the RC chains, to the capacitors 4.1-4. The inputs of the corresponding indicator indicators and the contacts of the fourth contact field 1.4 are connected, the brush of which through the first contact of the switch the mode is connected to the terminal for connecting the negative output of the power supply, and n + 1 contact of the switch

45

the wires to be checked allow it to be seen which wires are defective in installation

To check for a short between wires, turn the mode switch to the closed position.

The device works as follows.

At the moment when the contact brushes of all the fields are located at the contact 1.1.1, and if the tested wire has no connection to any other wire, the current from the positive pole of the power source will go through the circuit: the contacts of the first field 1-1, the tested wire 2.1, then contacts 6.1-6.P switch, load resistor 3.1, contacts four

the mode is connected to end-50 of that field 1-4, respectively, on the negative side of the second 1-2 and third 1-3 contact fields, the second output of the RC chain is connected to the terminal for connecting the negative output of the power source .55

The device works as follows.

35

40

45

cable wires allow the viewer to see which wires are defective in installation.

To check for a short between wires, turn the mode switch to the closed position.

The device works as follows.

At the moment when the contact brushes of all the fields are located at the contact 1.1.1, and if the tested wire has no connection to any other wire, the current from the positive pole of the power source will go through the circuit: the contacts of the first field 1-1, the tested wire 2.1, then contacts 6.1-6. A switch, a load resistor 3.1, contacts a power source through the contact 6.p + 1 switch. The signal element 5.1c, where k 1-n, will be shorted and not lit. If, for example, the second wire has a connection with the wire n, then the operation of circuits 1 will proceed in the following sequence: as soon as the HCRX contact brushes move to position 1.1.2, the GOK from the positive pole of the power source goes along the circuit: contacts floor 1 -1, tested wire 2.2. At the junction of the second and fifth wires, the current splits in two circuits. One circuit consists of a contact 6.2 of the switch, a load resistor 3.2, contacts of the field 1-4, a contact of the 6.p + 1 switch and the negative pole of the power supply. On this circuit, the signal element will not light up, as its input will be shorted through the contacts of floor 1-4 and switch 6.P-1-1. The second circuit is formed through the connection of the second wire 2.2 with the wire p, the contact of the switch 6, p, the load resistor Z.p, capacitor 4.P and the negative pole of the power source. After charging the capacitor 4.P, the signaling element 5.p will ignite. After the brushes of the contact fields of the step finder are moved to the n position, the signaling element in the second wire circuit will light up in the same way. The burning of the signal elements in the chains of the second and n-th wires indicates that the wires are short-circuited. Similarly, all wires are checked for wiring between each other. An RC string is needed to eliminate spurious signals at the moment of switching.

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Claims (1)

Invention Formula A device for monitoring electrical circuits of cables and harnesses, containing a power source, a mode switch, a signal unit consisting of n indicators, characterized in that, in order to simplify 11, to improve the speed and reliability of the control, it is entered into it - kidneys and a step finder containing four contact fields, each of which with the number of contacts n equal to the number of objects of control, the terminal for connecting the positive output of the power supply is connected to the brush of the first contact field, the contacts ne The first contact field is connected to the contacts of the second contact field through the terminals for connecting the test object, the brush of the second contact field is connected to the brush of the third contact field, the contacts of which are connected to the cervical pins of RC chains, to the capacitors of which the inputs of the corresponding pin indicators and contacts are connected. the fourth contact field, whose brush through the first contact of the mode switch is connected to the terminal for connecting the negative output of the power source, and the n contacts of the switch the press is connected respectively to contacts of the second and third con20 25 thirty clock fields, the second terminal of the KS-circuit 1 TCH-35 ki is connected to the terminal for connecting the negative B of the power supply source.