SU728148A1 - Device for signalling about the state of an object being monitored - Google Patents

Description

(54) DEVICE FOR ALARM SIGNALING,. CONTROLLED OBJECTS

The invention relates to electrical engineering, in particular, to alarm systems. The device can be used to signal the failure of industrial installations .i

Technological signaling devices are known that contain fault sensors connected to signal-processing logic circuits, for example, made on a relay and connected to signal lamps 1. These devices determine by means of sensors that equipment has malfunction and logic signals are processed by sensors. , - organization. holding the time, highlighting the signals that appear with a blinking light, and using the warning lamps provide information on faults to the operating personnel.

The disadvantage of such devices is the inability to verify the validity of their elements, which entails in case of failure the loss of information about the equipment malfunction.

It is also known a process signaling device, which allows manual control of health, containing signaling cells, each of which contains a sensor, the output of which is connected to the input of a logic unit, output connected, with indicator 2. The device is monitored by the operator, which reduces its reliability.

The aim of the invention is to increase the reliability of the device.

The goal is achieved by the fact that a pulse shaper, a memory unit, an alarm device, and an element are entered into the device; the first output of the pulse shaper is connected to the second input of the logic unit in each alarm cell, and the second output of the shaper generator is connected to the third input of the logic unit each the cell, the alarm and the first input of the memory block, the second output of each of the logical blocks is connected to the corresponding input of the AND element whose output is connected to the second input of the memory block , The output connected to the signal transmitter.

The drawing shows a schematic diagram of the device.

The device contains a driver for control pulses 1 containing a generator of 2 pulses, a counter 3, a decoder 4 and a distributor of 5 pulses, a block of memory 6, made on And 7 and 8 elements, a signaling device 9, And 10 element, signaling cells

11, each of which contains a sensor

12, logic unit 13, indicator 14. The number of sensors, signal lamps and processing logic is determined by the number of monitored signals.

The device works as follows.

Input fault signals from sensors 12 are fed to the corresponding inputs of logic blocks 13 and are processed by them according to predetermined algorithms. Logic blocks control the indicia 14.

The pulse shaper 1 operates as follows.

Pulse generator 2 continuously sends signals to counter 3. After a certain period of time, determined by the period of operation of the generator, a signal appears at the output of decoder 4 :; This signal triggers the dispenser 5 pulses. /

The first pulse from the output of the distributor 5 is fed to the inputs of logic blocks 13 and to the input of the element AND B of the memory block 6. If the logical blocks are in good condition, all the inputs of the element 10 appear to be signals 1hbd the signal of the element 10 7 memory block b, returns it to its original state. .

The second control pulse, which is fed from another output of the distributor, 5 pulses to the installed inputs of the optical blocks 13, returns them to a similar state. In the case of the instability of any of the logical blocks, the AND 10 element does not work,

memory 6 to the input. congestion signal

9 a signal is received and the alarm device gives a signal about the device malfunction.

Thus, periodic monitoring of the operability of the device is carried out by briefly submitting

signals to the inputs and latching the occurrence of signals at the outputs of all the logic circuits of the device with the issuance of a special signal in case of failure of any of these schemes.

The use of automatic control significantly increases the reliability of the alarm device, allowing it to detect and eliminate a malfunction before it leads to loss of information about equipment malfunctions,

In addition, the use of such controls reduces the labor costs of operating the device, since in this case 5 specialized personnel are not required to monitor the operation of the device and carry out its periodic checks.

Claims (2)

Invention Formula Device for signaling the condition. The controlled objects, containing the signaling cells, each of the SEN of which contains a sensor, the output of which is connected to the first input of the logic block, the output of which is connected with the indicators, is labeled with e. - by the fact that, in order to increase the reliability of the device, a pulse driver, a memory unit, a detector, an I element are inserted into it, the first output of the pulse driver is connected to the second input of the logic unit in each signaling cell. the second output of the pulse generator is connected respectively to the third. the input of the logic block in each cell of the alarm and the first input of the memory block; the second output of each 0 of the logic blocks is connected to the corresponding input of the element I, the output of which is connected to the second input of the memory block whose output is connected to the alarm device. 5 Sources of information taken into account in the examination 1. Electrotechnical reference. M., Energii, v.2, 1975, p.705706. ., ............:.,. ..- .l 2. USSR author's certificate No. 544982, cl. C 08 B 29/00, 1973 (prototype).