SU875392A1 - Parameter monitoring device - Google Patents

Description

(54) DEVICE FOR CONTROL OF PARAMETERS

one

The invention relates to information-measuring technology and can be used in automatic monitoring and control systems.

A device is known for controlling a relay contact switch, assembled according to a coordinate scheme, which operates on the basis of an analysis of the current curve of a transient process, or a relay.

In the device, in each cycle of operation, the number of relays activated simultaneously is monitored by comparing the voltage proportional to the total current flowing through the relay coils with the reference values at specified times after switching on. If ° this number is not as specified, then the switch is turned off l.

The drawback of the device is that the functional control circuit, included in its composition, is suitable only for a limited range of devices in which the same number of relays are simultaneously turned on, which does not exclude the possibility of connecting another address to the switch output.

The closest technical solution to the present invention is a device for controlling electrical parameters of electronic equipment, comprising a control unit connected to two registers, the outputs of which are connected to a code matching unit and to a switch, the outputs of which are connected through a key unit to a current meter, and the control unit The output of the key block is connected to the output of the code 2 match block.

A disadvantage of this device is the lack of control of its own 20 switch, which does not allow increasing its reliability.

Claims (2)

The purpose of the invention is to increase the reliability of the device. The goal is achieved by the fact that a device for controlling parameters, containing a control unit connected by an output through the first and second registers to the inputs of the first; The input unit and the first inputs of the switch connected by the first outputs through the key block to the current meter inputs, the I element, the second and third comparison blocks, the third and fourth registers connected by the inputs to the second outputs of the switch, and the outputs through the second and third comparison blocks to the first part of the element I, connected by the third output of the first comparison block, and the output to the control input of the key block, the second inputs of the second AND third comparison block being connected to the outputs ostvenno but the first and second registers. The drawing shows the block diagram of the device. The device contained the unit I control, the first and second registers 1.2 and three comparison blocks 4-6, switch 7, the third and fourth registers 8 and 9, the current meter 10, the AND key unit and the And 12 element. The device works with a food block 11, acting on the first and second registers 2 and 3, generates at its outputs parallel binary address KOjri i, which are fed to blocks of comparison codes 4-6 and to the first inputs of switch 7. Switch 7 in response to the action forms contacts of multi-contact relays free from inclusion in commutated center nb that in the case of serviceability switch input id cal councils CTD m codes from the first and second registers 2 and 3 respectively. In this case, the second and third blocks of comparison 5 and 6 form the resolving potentials. for elements 12. In case the control of the code from the first and second registers 2 and 3 is also identical, then at the output of the first block of comparison 4, the Formula 1 with permissive potential, which is transmitted through element 12 to the block 10 of keys, connecting the switch outputs to the current meter. In case of malfunctioning of the own switch 7, the code from the first register 2 or the second register 3 does not match the output code on one switch {or from the second outputs on both), respectively, and the second block. 5 or the third comparison block 6 (or both together) forms the inhibitory potential for the element AND J2 (this occurs in the event of a failure of any relay entering switch 7). The keys of the key block 10 remain open in this case, which excludes the possibility of emergency operation in the current meter I1. A positive effect in the proposed device is achieved by supplementing the device with a functional control circuit of the switch with a depth of up to one element (relay), which is an inseparable frequent switch. In this case, the probability of failing the current becomes less, which increases the reliability of the device as a whole. An apparatus for controlling parameters comprising a control unit connected by an output through first and second registers to the inputs of the first block, a comparison and to the first inputs of a switch connected by the first inputs through a block of keys to the inputs of a current meter, characterized in that , And, the second and third comparison blocks, the third and fourth registers connected by inputs to the second outputs of the switch, and the outputs through the second and third blocks are entered into it. not to the first В2 (; one element of the AND connected to the third input with the output of the first comparison block, and output to the control input of the key block, the second BXOJ: U of the second and third blocks being connected to the outputs of the first and second registers, respectively. in the examination 1. Automatic control of electronic equipment, Collected by V. M, Shl ndin. M ,, Energia “972. p. 18-22. 2. USSR author's certificate number 542175, cl. G 06 F 15/46, 1975 (prototype).