SU1023434A1 - Relay contact parameter checking device - Google Patents

Abstract

1. DEVICE FOR CONTROL OF RELAY CONTACT PARAMETERS containing clock cells with control tumblers, the number of which is equal to the number of controlled contacts of the relay, switch for alternately connecting the measuring unit to each monitored contact, control unit of the relay windings, leads for connecting the windings of the tested relays, switch for two clock generator, a power source, the output of which is connected to one of the terminals for connecting the windings of the tested relays and to the switching contacts of toggle switches, controls, characterized in that, in order to simplify the device, expand its functionality and improve the performance of the control, in it each clock cell is made of; D-flip-flop and logical elements: 2-ZI-OR, 2I and 2IL; and the relay winding control unit consists of two D-flip-flops and two output logic elements Z.I. In addition, the D-flip-flop is added to the device. Program end with multi-input logic element OR at the input, inverse outputs of the D-triggers of the control unit the windings are connected through a logic element 2-ZI OR to the input of each D-trigger of the clock cell, the inverse output of each I.critory is connected via a logic element And to the corresponding (Lmu input of the switch, and through logic element 2I to one of the inputs mn of the control input element OR or through the logic element 2-ZI-OR of the subsequent clock cell to the input of its D-flip-flop, and the direct output of each D-trigger clock cell to the second input of the logic element of the previous clock-cell, in addition, consoc each control clock switch; each of the clock cells is connected via the logical element 2IL of the previous clock cell to the second input of its 4 logical element 2И, and the inverse output of the D-flip-flop. The end of the program is connected to the third input of the logical element 4I each Ktova cell and the second input of the output logic elements of the control unit GI; the lazy windings of the relay, the clock inputs of all the mentioned D-flip-flops are connected to the generator output

Description

sync pulses, and their inputs Set zero are connected to the corresponding switch output by two

position

. 2. The device according to claim 1, wherein the winding control unit of the relay is equipped with two additional D-triggers, the input of each of which is connected to the inverse output of the corresponding D-trigger winding control unit of two 1 OR elements, the output of each of which is connected to the input of the corresponding D-flip-flop: a winding control unit, two logical elements 2i and a logical element 2-2И-OR, and two additional logical elements 2И are inserted into each clock cell, and the toggle switches systematic way have three operating positions, inverted outputs of the D flip-flops control unit windings and straight

the outputs of the additional D-flip-flops are connected via logic element 2-2И-OR to the fourth input of the logical element 4 and each clock cell, and the inverse output of the D-trigger of each clock cell and the control terminals of each subsequent cell through its additional logic elements 2I, respectively, are connected to the inputs multiple input OR elements; in addition, the contacts of the toggle switch of the control of the first clock cell and the inverse outputs of the D-flip-flop of the winding control unit through the logic elements 2I of the unit pack ION windings are connected to a third input of the output AND gates GI, synchronize Suitable inputs additional D-flip-flops are connected to the output of clock generator, and their inputs are zero Installation connected to a corresponding

output switch to two positions.

The invention relates to electrical engineering and can be used to control various parameters of the contacts of electromagnetic relays:

resistance of the contact circuit, coripo-: insulation of the meiad of contacts, electric strength of the insulation, between contacts, etc.

The known devices for monitoring contact relay contact parameters comprise a switch-on unit for the windings of the tested relays, a measuring unit and a sub- unit; switch the monitored contacts of the tested relay to the measuring unit. Each of these. The device provides control of only a certain type of electromagnetic relay with 3 fixed numbers of monitored contacts.

The closest in technical essence to the invention is a device for monitoring relay parameters, containing clock cells with control tumblers, the number of which corresponds to the number of controlled contacts of the relay, switch

for alternately connecting the measuring unit to each monitored contact, relay winding control unit, leads for connecting "ebmots of test" relays, two position switch, clock generator, power supply, the output of which is connected to one of the terminals for connecting windings of tested relays and to switching contact control switches 6

The known device provides an automatic measurement of the contact resistance of aKto in one type of disconnecting or closing. However, most types of relays contain various combinations of switching, closing, or disconnecting contacts. In this case, first, the program block adjusts to the contact control program, and then to the opening control program, which requires additional time and results in T decreasing the performance. In order to simultaneously ensure automatic monitoring of the closing and opening contacts, it is necessary to additionally use a second software block operating in series with the first and increase the number of input channels for simultaneously connecting the short circuit to them and opening contacts, which will delineate the known complication of the device; In addition, monitoring in such a sequence reduces the functional capabilities of the device and creates certain difficulties in monitoring various types of relays, such as relay switches or polarized ones that contain tripping contacts or contacts with a memory status when removed from control windings a tensioner. ,, E} spruce of invention — simplification of the device for automatic control of the electrical parameters of the relay contacts, expansion of its functional capabilities and, increase in the production of control. This goal is achieved by the fact that, in the device for ifcontrol, a pair of meiTpoB relay contacts contains clock cells with control tumblers, the number of which is equal to the number of monitored relay / switch contacts for alternately connecting the measuring unit to each controlled contact, the relay winding control unit, leads for connecting the windings of the tested relays, switch on. two positions, a clock generator, a power source, the output of which is connected to one of the terminals for connecting the windings of the tested relays and to the switching contacts of the control tumblers, each clock is made of a D-flip-flop and a log of black elements 2-ZI-OR, W, 2I, 2ILI, and BLS1K, near the relay windings - from two D-flip-flops and two output logic elements 5I, in addition, the device additionally introduced D-TRigger Program end with a multi-input logical element OR at the input, and inverse outputs of D-flip-flopsThe local loop control of the tompoles is connected .. through a logical element 2-ZI-IS to the input of each D-flip-flop of a clock cell, the inverse output of each of which is connected via a logical element to the corresponding input of the switch, and through a logical element 2I to one of the inputs of the multi-input logic element OR or through the logical element 2-ZI-OR of the subsequent clock cell to the input of its D-flip-flop, and the direct output of each D-trig jrepa of the clock cell to the second input of the logic element 4I of the previous clock cell, toggle switch contacts the control of each clock cell is connected via logic element 2 OR of the previous clock cell to the second input of its logic element 2I, and the inverse output of D-trigger. The end of the program is connected to the third input of the logic element AND of each clock cell and the second input of the output logic elements of the GI winding control unit relays that synchronize the inputs of all the above mentioned D-triggers are connected to the output of the clock generator, and their inputs Set zero are connected to the corresponding output of the switch for two fields stress. In addition, the relay winding control unit is equipped with two additional D-flip-flops, the input of each of which is connected to the inverse output of the corresponding D-flip-flop of the winding control unit, two multi-input logic elements OR, the output of each of which is connected to the input of the corresponding D-flip-flop of the control unit windings, two logical elements 2И and logical element 2-2И-OR, and - two additional logical elements 2И, c. than the control tumblers have three operating positions, the inverted outputs of the D-flip-flops of the control unit are wound "1" and the direct outputs of the additional D-flip-flops are connected via logic gate 2-2И-OR to the fourth input of the logic element fH of each clock cell, and the inverse output The D-flip-flops of each clock cell and the contacts of the toggle-switch controls each subsequent cell through its additional logic elements 2I, respectively, are connected to the inputs of multiple-input logic elements OR, the contacts of the toggle-switch of the first t each cell and inverse outputs of the D-flip-flops of the winding control unit through logic elements 2I of the winding control unit are connected to the third input of the output logic elements of the ZI, the clock inputs of the additional D-flip-flops are connected to the output of the clock generator, and their inputs Set zero are connected to the corresponding output of the switch in two positions. In the drawing. A functional control device is presented, for example, a relay of a contact resistance of a relay switch with two control windings and two switching contacts, the device contains: in the control module of the relay windings - D-flip-flop 1 for turning on the first winding of the relay, D-flip-flop 2 for the second relay coils, output logic elements ZI 3 and 4, additional logic elements OR 5 and 6 and 2 and 7 and 8, D-triggers 9 and 10 and logic element 2-2 AND-OR t1; each clock cell has a control toggle switch 12, a logic element 2-ZI-OR 13, a D-flip-flop 1L, a logic element 4I 15, a logic element 2I 16, a logic element 2 OR 17 and additional logic elements 2I 18 and 19. In addition, the device enters the switch 20, the measuring unit 21 an additional D-flip-flop 22 The end of the program, the logic element OR 2 switches to two positions 24, the clock pulse generator 25 and the power source 26. The number of clock cells is equal to the maximum allowable number of monitored relay contacts. The control toggle switch 12 contains fixed contacts 27 and 28 and movable 29. The inverse output of D-triger 1 is connected to the first input of logic elements 3,7,11 and 13 (each clock cell) and the input of D-flip-flop 9. The inverse output of D- trigger 2 is connected to the first input of logic elements 4.8, 11 and 13 each (clock cell) and the input of D-flip-flop 10 Output: logic element 3 is connected to the first winding of the relay switch, and the output of the logic element 4 to the second winding. The direct outputs of the D-flip-flops 9 U are connected to the second. RYM inputs of the logic element 11, the output of which is connected to the fourth. The input of the logic element 15 of each clock cell, the output of which, in turn, is connected to the corresponding input of the switch 20. In each clock cell, the moving contact 29 of the control toggle switch 12 is connected to the power source 26, and the fixed contacts 27 and 28 are connected to the second inputs the logic element 13, the output of which is connected to the input of the D-trigger 14, and through the logic element 17 of the previous clock cell to the second input of its logical element 1b. The outputs of the logic elements 1b of all clock cells through the logic element 23 are connected to the input of D-flip-flop 22. In addition, the fixed contacts 27 of the toggle switch 12 clock cells are connected via logic elements 18 and 5 to the input of the D-flip-flop 1, and contacts 28 through logic elements 19 and 6 to the entrance of D-toigger 10. The inverse output of D-flip-flop 1 in each clock cell is connected to the first input of logic elements 15 and 1b and the second input of logic elements 13 and 18 of the subsequent clock cell, Contact 27 of the toggle switch 12 of the first clock cell is connected to the third input of logic element 3 and the contact 28 through the logic element 7 to the third input of the logic element A. The inverse output of the D-flip-flop 2 is connected to the third input of the logic element 15 of each clock cell and the second input of the logic elements 3 and 4. The input is a meter unit 21 is connected to the input of the switch 20, the output of the generator 25 is connected to the clock inputs of D-flip-flops 1,2,9,10 and 1, two-position switch is connected to the input Set up zero of which. and two break contacts of controlled re. In this connection, the control tumblers 12 of the first two clock cells are switched to the operating position. The relay relay contact is closed (contact 29 is connected to contact 27), the next two clock cells 8 are position of the relay contact closure (contact 29 connect with contact 28) , and the rest of the clock cells - in the position E off (contact 29 is open with contacts 27 and 28). 71 When the switch is switched to two positions with the 2 first clock pulse of the generator 25, D-flip-flop is switched}, from the inverse output of which to the inputs of D-flip-flop 9 and D-flip-flop 1 of the first clock cell is post. The signal is enabled for switching. In this case, the D-flip-flop t by the logical element is: 3. includes the first winding of the monitored relay-switch, and the logic element 11 on the fourth input prohibits the logic elements 15 of each clock cell from issuing control signals to the input of the switch 20: During the ocyll clock cycle ectc, the switching of the relay switch to its initial: state, It is not necessary to control the contacts and complete the transient switching processes when its contacts are de-energized. . The second sync pulse switches D-flip-flop 9 and-D-flip-flop k of the one-touch cell, the output signal is turned off at the output of the 2f4ecKoro element 11, and the switch 20 receives the control signal 15 at the output of the logic element 15 of the first clock cell. to the first break contact of the monitored relay, the measuring unit 21, which, for example, performs the transient resistance measurement. At the same time, from the inverse output / yes of the D-flip-flop 14 of the first clock, through the logic element 13 of the second clock cell, the switch enable signal is applied to the input of its D-flip-flop 14. : When the third clock pulse is applied, the D-T1rgyGger 1 second clock cell is switched by the forward signal of which the logical element 15 of the first clock cell is turned off and the inverse output signal is resolved to the next input by the logical element 15 of the second clock cell. switch 20 of the control signal, at the command of which a connection is made to the second pa3Na fKarajeMy contact of the monitored relay of the measuring unit 21, which carries out the measurement during a given clock cycle. In this case, the inverse output of the D-flip-flop of the second clock loop through the logic element 19 of the third cell and the logic element at the input of the D-flip-flop 2 generates an enable signal for switching. When the fourth pulse is applied, the D-flip-flop 2 switches, the inverted output of which to the D-flip-flop to and D-flip-flop I inputs of the third clock cell outputs a permit signal for switching. During this tick; the second winding is supplied with the operating voltage of source 26, 1 the bare switch switches to the opposite state, the logical element 1t to the input of the ogic element 15 clock cells outputs a prohibition signal, and the switch 20 disconnects the measuring unit 21 from the monitored contacts that switch in a de-energized state. Upon receipt of the 25th and sixth sync pulses from the output of the generator, the D-trigger first switches to the third and then the fourth clock cell. During the formed fifth and sixth cycles, the measuring unit 21 by the switch 20 is alternately connected to the remaining two closing contacts of the monitored relay, which during the fourth cycle are turned into the closed state. During the sixth clock cycle, the D-flip-flop 1 of the fourth clock cell, via logic elements 16 and 23, outputs an enable signal to the D-flip-flop 22 input. When the seventh sync pulse arrives, D-TRIGGER 22 ends the program, the signal is inverted. The output of which switches off the logic elements of 15 clock cells and the output logic elements 3i: M D-triggers of the remaining so-called cells remain in the initial state upon receipt of the following clock pulses, since their control tumblers 12 are in the Off position. The device is over. Returning the entire circuit to its original state is accomplished by pressing switch 2.. As can be seen from the operation of the device, it is possible to measure the transitional resistance of the relay contacts in a different order, i.e. first, the relay is set to the initial state by the second key, D-trigger 2 and logic element 4, are checked. The contacts and then the relay switch are transferred to the opposite state on the first winding of D-flip-flop 1 and logic element 3, after which the break contacts are monitored. For this, the control toggle switches 12 of the first and second clock cells are set to the working position Monitoring the closing contact of the relay, and the third and fourth switch to the working position Monitoring the closing contact of the relay. In the case of control only of the closing contacts of the relay control tumblers, 12 corresponding clock cells cta in TC in the working position Monitoring of the closing contact of the relay, and in the case of control of only the opening ones in the working position Control of the opening contact of the relay. Running the clock cells of the software block 1 and the relay coil control unit on D-flip-flops and using control switches with three operating positions reduces the number of clock cells using them to automatically control both the closing and opening contacts of the relay, while reducing the number of measuring inputs switch and it is possible to perform an alternate monitoring of the parameters of the relay using one measuring unit. The ability to use tumblers to control the flexible adjustment of clock cells to different control programs allows the proposed device to control various types of relays with any contact set and with any order, which greatly expands its functionality and improves the performance of the controller. The proposed device can be widely used both for research work on the creation of new types of relays and serial production when mastering new products to control not only transitional contact resistance, but also their insulation resistance, electrical insulation resistance and other contact parameters.

Claims (2)

IL NYEIR. No. 74-2102, Drawing RS2.702. .389. Developer enterprise applicant (prototype),; (54) (57) Ί. device for monitoring RELAY CONTACT PARAMETERS, containing clock cells with control toggle switches, the number of which is equal to the number of monitored relay contacts, a switch for alternately connecting a measuring unit to each monitored contact, a relay coil control unit, terminals for connecting relay under test windings, a two-way switch position, clock generator, power source, the output of which is connected to one of the terminals for connecting the windings of the tested relays and to the switching contact am tumblers, control, characterized in that, in order to simplify the device for expansion of its functional possibilities and improve control performance in each clock cell it is made of; D-flip-flop and logic elements 2-ZI-OR, 4I, 2I and 2ILI / a relay coil control unit - from two D-flip-flops and two output logic elements Z.I, in addition *, an additional D-flip-flop is introduced into the device End programs. with a lot. input logic element OR at the input, and the inverse outputs of the D-triggers of the winding control unit are connected via the 2-ZILIL logic element to the input of each D-trigger of the clock cell, the inverse output of each and? which is connected through logic element 4I to the corresponding input of the switch, and through logic element 2I to one of the inputs of the multi-input logic element OR and through the logic element 2-ЗИ-OR of the next clock cell to the input of its Д ^ flip-flop, and the direct output of each Д -trigger of a clock cell - to the second input of logic element 4 AND the previous clock cell, in addition, the contacts of the control switch of each clock cell are connected via logic element 2 OR of the previous clock cell to the second input of its logic about element 2I, and the inverse output of the D-trigger The end of the program is connected to the third input of the logic element 4I of each clock cell and the second input of the output logic elements of the ZI control unit: relay relay coils, the synchronizing inputs of all the mentioned D-triggers are connected to the output of the generator - SU ... 1023434 clock pulses, and their inputs Zero setting are connected to the corresponding output of the two-position switch. . 2. The device according to π. 1, the fact that the relay coil control unit is equipped with two additional D-triggers, the input of each of which is connected to the inverse output of the corresponding D-trigger of the coil control unit by two multi-input logic elements OR, each of which J is connected to the input of the corresponding D-trigger of the control unit of the windings, two logical elements 2and and a logical element 2-2I-OR, and two additional 2I logic elements are introduced into each clock cell, and the control toggle switches have three operating positions, the inverse outputs of the D-triggers of the winding control unit and the direct outputs of the additional D-triggers are connected through the 2-2I-OR logic element to the fourth input of the logic element 4 and each clock cell, and the inverse output of the D-flip-flop of each clock cell and the contacts of the control switch of each subsequent cell through its additional logic elements 2I are respectively connected to the input I will give multi-input logic elements OR, in addition, the contacts of the control switch of the first clock cell and the inverse outputs of the D-trigger of the control unit of the windings are connected to the third input of the output logical elements of the ZI via the logic elements 2I of the control unit of the windings, the synchronizing inputs of the additional D-triggers are connected to the output of the generator clock pulses, and their inputs Zero setting are connected to the corresponding switch output in two positions.