SU390551A1 - ALARM DEVICE - Google Patents

Description

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It is in the field of telemechanics and can be used in systems with on-line monitoring of blocks of controllers in which (relay sensors are used).

Known alarm devices that contain a switch-distributor, a decoder, the output of which is connected to the display unit. The shortage of known devices consists in the absence of: si, the operational system of the built-in coitrol, which drastically reduces the reliability of multichannel telemechanics systems, since the detection of a fault in the channel takes a long time.

The purpose of the invention is to improve the reliability of the operation of the signaling device by performing on-line embedded monitoring.

This chain is achieved in the proposed device due to the fact that the logical schemes "OR," OR-NOT, the summation circuit, the control unit are entered into it. The switch output is connected to the first inputs of all “OR” logic circuits. The second input of each circuit "OR connected to the corresponding input of the device. The output of each logic circuit “OR is connected to the first input of the corresponding logic circuit“ OR NONE. The second inputs of all the OR-NOT circuits are connected to the output of the control unit, one input of which is connected to the output of the device, and the other to the first input of the circuit sum: van1. The output of the summation circuit is connected to the input of the switch.

The outputs of all the OR-NOT circuits are connected to the input of the decoder, the output of which is connected to the second input of the summation circuit.

The drawing shows a block diagram of the alarm device.

The device includes: a summation circuit /, switch 2, control unit 3, OR 4i-4n schemes, OR-NOT 5j-5 schemes, decoder 6 and display block 7. Summation scheme 1, switch 2 and

The "OR 4i-4" circuits are included in the sensor triggering impetus, and the inputs a, b, c, ..., n of the device are connected to the outputs of the sensors. The device works as follows. To control the signaling device, it is necessary to send the start-pulse signal and switch 2 to the control unit 3 through the accumulation circuit 1. A switch by logical operations produces a distribution of simulated signals according to logical m.

channels.

The nerve signal through the logic “OR 4 goes to the first logical channel (scheme“ OR-NOT 5i). If the channel is right; 1, then the signal from it goes to the decoder 6, then to the block display 7,

to the circuit by summations / and through it to the input of the counter in switch 2. The switch issues a second signal, which through the logic circuit "OR 4 enters the circuit" OR-NOT 52 of the second horse channel.

If the channel is iHCiipaBeH, then the signal C will be sent to the decoder 6, to the digital display unit 7 and again through the summation circuit (-) to switch 2. Switch 2 generates the third signal.

Thus, switch 2 simulates sensor triggering and cyclic polling of the health of the logical channel-in.

If any logical channel is defective, then it does not give a signal, and the counter in switch 2 stops. The number of lamps equals the number of lamps monitored, or a digital indicator lamp is used. The digital display will indicate the channel number that preceded the faulty one. For example, if the 10th channel is defective, then the number 9 on the digital display will light up.

Subject invention

The device. Signaling, containing a switch-distributor, a decoder, the output of which is connected to the display unit, characterized in that, in order to increase the number of devices in the device, the logical scheme "OR," OR NOT, scheme summation, the control unit, and

switch output is connected to the first voltages of all logical circuits "OR, second input Each circuit" OR is connected to the corresponding input of the device, the output of each logic circuit "OR is connected to the first input of the corresponding logic circuit" OR NOT, the second inputs of all the circuits "OR -NOT connected to the output of the control unit, one input of which is connected to the output of the device and the other to the first input of the summation circuit, the output of the summation circuit is connected to the input of the switch, the outputs of all OR-NOT circuits are connected to the decoder input, output to expensively connected to the second input of the Summation circuit.