SU1145310A1 - Device for checking electric wiring - Google Patents

Abstract

ELECTRICAL INSTALLATION DEVICE FOR INSPECTION, containing LEDs interconnected with cathodes, anodes with appropriate terminals for connecting the outputs of the control object of the first contact element and the first terminals of the corresponding closing keys connected with the second terminals between themselves, signal lamps connected with the first outputs between themselves, the second pins - with the corresponding terminals for connecting the inputs of the control object of the second contact element and with the cathodes of the corresponding diodes anodes interconnected, characterized in that, in order to increase the speed of the device, a source of alternating voltage, a transformer with two counter-wound secondary windings and opaque flags, made with the possibility of dimming the LEDs, the first and second terminals of the alternating source terminals are connected to the same terminals of the primary winding of the transformer, the first output of the first secondary (the winding of which is connected to the anos- es of the isolation of the diodes, the second output from the cathode and LEDs, the first terminal of the second secondary winding of the transformer is connected to first terminals of the signal lamps with the second vgeod second terminals of NO keys. El Sad

Description

"one

Ieregregation relates to the instrumentation technology and can be used to check the installation of harnesses, cables, printed circuit boards.

A device for monitoring and marking the cores of cable products, comprising first and second contact devices, a group of two-position latching switches, the moving contacts of which are connected respectively to the contacts of the first contact device, a group of indicator lamps connected respectively to normally closed contacts of the switches, and a group of diodes, each of which is connected to two adjacent contacts of the second contact device, a source of alternating voltage l.

The disadvantages of the known device low speed and accuracy of verification.

The closest technical solution to the invention is a device for checking electrical installation, containing LEDs connected by cathodes among themselves, anodes with corresponding marks for connecting the outputs of the object of control of the first contact element and with the first terminals of the corresponding closing keys connected by second conclusions signal lamps connected by the first terminals to each other, by the second terminals - to the corresponding terminals for connecting the inputs of the second end control object clock elements and cathode-corresponding decoupling diodes connected by anodes between themselves, the first and second dip switches and a source of constant voltage C23 "

The disadvantage of the known device is low speed, due to the fact that when testing each circuit, it is necessary to identify the contacts that are not included in this circuit by switching two position switches. This re-commutation reduces the time spent on control, excluding the control operators without mounting terminals, but it also takes time. At the same time, the preliminary installation of unused terminals (prior to the start of testing all circuits) practically does not reduce the time spent on control, since

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requires the operator to record all unused terminals, the number of which is very large. In addition, in a known device, testing of one circuit is carried out repeatedly, over each terminal belonging to this circuit, which also reduces the speed of the device.

The purpose of the invention is to increase the speed of the device.

The goal is achieved by the fact that in devices for checking electrical installation, containing LEDs, connected with cathodes, anodes, with corresponding terminals for connecting the outputs of the control object of the first contact element and signaling lights to the first leads of the corresponding closing keys connected by the first pins to each other, the second pins to the corresponding terminals for connecting the inputs of the control object of the second contact element and to A source of alternating voltage, a transformer with two oppositely wound secondary windings and opaque flags, made to dim the LED and the first and second outputs of the alternating voltage source, are connected to the same terminals of the primary winding of the transformer, the first the choice of the first secondary winding of which is connected to the anodes of the isolation diodes, the second output - with the cathodes of the LEDs, the first output of the second secondary second winding of the transformer is connected to the first terminals of the signal lamps, a second terminal - a second vshodami zamzhakitsih keys.

The electrical circuit of the device is shown in the drawing.

The device contains the first contact element 1, the closing keys 2.1-2.P, LEDs 3.1-Z.i, signal lamps 4.1-4.p, diodes 5.15, pushes, the second contact element 6, transformer 7, source 8 of alternating voltage , opaque flags 9.1-9. П, terminals 10.1lO .h of the second contact element 6, terminals 11.1-11.h of the first contact element 1, primary 12.1 and secondary 12.2 and 12.3 windings of the transformer 7. The drawing also shows the control object containing, for example , two controlled electrical circuits 13.1 and 13.2.

The cathodes of the 3.1-Zp LEDs are interconnected, the anodes - with the corresponding terminals 11.1-111A for connecting the outputs of the control object of the first contact element 1 and with the first terminals of the corresponding closing keys 2.1-2. h, connected by the second pins to each other, signal lamps A.I.-A.n, connected by the first pins to each other, the second pins to the corresponding terminals 10.1 -10. g to connect the outputs of the object to control the vtroh contact element bis cathodes of the corresponding diodes 5.1 -5. isolating anodes between themselves. The opaque flags 9.1-9. П are installed against the light-emitting surface of the LEDs 3,1 З.п with the possibility of their darkening, the first and second terminals of the alternating voltage source 8 are connected to the same terminals of the primary winding 12.1 of the transformer 7, the first

the output of the first secondary winding T2,2 which is connected to the anodes of the diodes 5.1-5. isolators, the second terminal with the cathodes of LEDs 3.1-3, .and the first terminal of the second secondary winding 12.3 of the transformer 7 is connected to the first terminals of signal lamps 4.1-4. P, the second one - to the second terminals of the closing keys 2.1-2. L

The device works as follows.

In the initial position, all the keys 2.1-2.P are open, the LEDs 3.1-Z. and are not closed by phasing 9.19 .P. First, all jumpers of the installation of the control object from the side of the contact element 1 are checked (the contact element 6 is disconnected from the control object), for which) I | 2.1-2 keys, alternately, starting with the 2.1 key, and controlling the ignition with it 3.1-zp LEDs When the switch 2.1 is connected to the terminal 11.1 of the contact element 1, the total voltage induced on the windings 12.2 and 12.3 from the winding 12.1 of the transformer 7 connected to the source 8 is applied to the circuit,

in which all the lamps 4.4.14 .P and diodes 5.1-5. p of isolation are included, as well as those of LEDs 3.1-З.п, which are connected to the moving contact of the key 2.1. The current of the total test signal in the first half-cycle of sinusoidal voltage from the positive lead of the winding 12.3 (marked by a dot) through the closed key 2.1 passes through the LEDs 3.1, 3.3, 3.6 (these LEDs are hot), then through the winding 12.2 goes to parallel connected chains made up of diodes 5.1-5. And isolation and the corresponding lamps 4.1-4p and rises to the negative terminal of the winding 12.3. In the second half-period, the current through the windings 12.3, 12.3 does not leak.

The total amount of current in the circuit, determined by the number of switched on LEDs 3.1-Z.p (in practical circuits, a ballast resistor is connected with each of the LEDs), is divided equally between all the chains of the isolation diode 5.1 and 4.1.

The parameters of the lamps and LEDs are chosen so that the amount of current flowing through each of the 3.1-3 "n LEDs is much less than the current causing the 4.1 lamp to ignite, therefore when all the 3.1-Z.p LEDs are on hot t.

When the LEDs, which are opposite to the closed key 2.1, light up, the operator controls the correctness of the corresponding circuit (i.e., verifies the numbers of the burning LEDs 3.1, 3.3 and 3.6 with the wiring diagram), and then closes the burning LEDs 3.3 and 3.6, Except for the one with the closed key 2.1, the LED 3.1, is opaque with 1 flags 9.3 and 9.6. In the course of further checking of the jumpers of the installation of the control object from the contact element 1, the operator does not close the keys 2.3 and 2.6, with the same name with closed flags 9.3-9.6. Thus, after pressing the key 2.1 and closing the flags 2.3 and 2.6, the operator successively closes the keys 2, 2, 2.4, 2.5, 2.7 and all subsequent ones. However, with & tcc duplicate checks of the same jumper. After completing the checks

of the jumpers, the operator checks the remaining 5 connections of the control object, for which he connects the second contact element 6 to the control object, as shown in the drawing (the keys are 2.12, c being open). In the installation of the control object, the connections connecting the terminals of the contact elements 1 and 6 close the circuit formed by the winding 12.2, the corresponding development diodes (in the drawing 5.3 and 5.7), the connections of the control object and those diodes 3.1 -3.and that correspond to the terminals of the contact element 1 to which these connections are connected (the LEDs 3.1, 3.3, 3.6 and 3.7 light up in the drawing). In this case, the operator sees only those 3.1-З.п LEDs that are not covered by the 9.1-9P flags (in drawing 3.1-3.7) are lit, and their number is equal to the number of insulated control object circuits that connect the contact elements 1 and 6 Next the operator checks each of the circuits, locking in turn the keys 2.1-2.P, which are the same with those 3.1-ZP diodes whose illumination he sees (the keys 2.1 and 2.7 in the drawing). When each of these keys is closed, the circuit formed by the winding 12.3, the closed key inspected by the circuit of the test object and the corresponding lamp 4.1-4.P., The lamp 4.1-4.h lights up and the operator controls 106 the correctness of the corresponding circuit. When the key 2.1 is closed, the lamp 2.3 lights up, and the key 2.7 - the lamp 4.7 lights up. Thus, each of these circuits is checked only once. Since the test voltages of the windings 12.1 and 12.3 act simultaneously, the 3.1-ZP LEDs are constantly constantly being tested and the operator can judge which circuits of the test object need to be checked yet without additional operations. The device operates during three half-cycles of alternating voltage on the primary winding 12.1 of the transformer 7, when the polarities of the voltages on its secondary windings 12.2 and 12.3 coincide with those indicated in the drawing. During the reverse half periods of the lamp 4.1-4. And they continue to burn, and the 3.1Zp LEDs go out; at a sufficient frequency of the supply voltage (above 20 Hz), the operator’s eyes do not perceive the LEDs of 3.1-ZP. Thus, the introduction of opaque flags 9.1-9.fi, transformer 7, alternating voltage sources 8 excludes the operation of uninstalled terminals 11.1-1 In before checking each circuit of the control object, as well as repeated checks of the same circuit, which significantly increases the speed of the device.

Claims (1)

DEVICE FOR CHECKING THE ELECTRICAL INSTALLATION, containing LEDs, cathodes interconnected, anodes - with the corresponding terminals for connecting the outputs of the monitoring object of the first contact element and with the first conclusions of the corresponding closing keys connected by the second conclusions among themselves, signal lamps, connected. interconnected by the first conclusions, the second conclusions - with the corresponding terminals for connecting the inputs of the monitoring object of the second contact element and with the cathodes of the corresponding isolation diodes connected by the anodes, characterized in that, in order to increase the speed of the device, an alternating voltage source is introduced into it , a transformer with two counter-wound secondary windings and opaque flags made with the possibility of dimming the LEDs, the first and second conclusions of the variable source the voltages are connected to the leads of the same name on the primary winding of the transformer, the first output of the first secondary winding of which is connected to the anodes of the isolation diodes, the second output to the cathodes of the LEDs, the first output of the second secondary winding of the transformer is connected to the first outputs of the signal lamps, and the second output with the second outputs of the closing keys. 1145310 2