SU894765A1 - Alarm condition warning device - Google Patents

Description

(5 DEVICE ALARMS AND WARNING SIGNALS

I

The invention relates to automation technology, in particular to multi-channel signaling devices with individual light and general sound alerts.

Known devices for multi-channel signaling are designed to monitor technological parameters using contact sensors SP.

The closest to the proposed technical entity is a device for signaling the deviation of the process parameter, containing an inverter connected via an amplifier to a signal lamp, a rectifier connected to the inverter and the output of the third element ORINE, a sensor and a button for checking the signal are connected to the inputs of the first element OR - NOT, the output of which is connected to one of the inputs of the inverter, one of the inputs of the second element ILINE and the first input of the third element

OR NOT, the second input of which is connected to the pulse generator, and the signal removal button is connected to one of the inputs of the fourth element OR NOT, the output of which is connected to another input of the second element OR NOT, and the other input of the fourth element ORINE is connected to the output of the second element OR NOT and the third input of the third element OR NOT. In this device, when the contact of the sensor is opened, the corresponding lamp flashes and the buzzer operates. When the sensor self-returns before pressing the signal pickup button, the signal lamp and

15 buzzer stops acting. When the pickup button is pressed, when the sensor is triggered, the lamp comes on smoothly and the sound stops.

20

The disadvantage of this device is that when the contact of the sensor is triggered, followed by rapid self-resetting, which is typical for emergency disturbances of technological parameters, as well as for self-healing disturbances (for example, medium pressure, liquid level, etc.), the warning lamp may go out Than the operator will have time to fix the signaling channel, as a result of which the information will be lost and the operator is forced to look for damage on other grounds. This does not allow the use of a known device for the alarm signaling of technological parameters, and when using for / warning alarms, self-healing parameters make it difficult for personnel to look for damage sites. The purpose of the invention is to increase the reliability and expand the functional capacity. device capabilities. This goal is achieved by the fact that the alarm device containing a sensor and a test button, the outputs of which are connected to the corresponding inputs of the first OR-NOT element whose output is connected to the first input of the second OR-NOT element and the first input of a third of its element OR - NOT, the output of which is connected to the second input of the OR-NOT element and the first input of the fourth element OR-NOT, the second input of which is connected to the output of the signal pickup button, the output of the fourth element OR NOT connected to the second input ter its element is OR NOT, the output of the pulse generator is connected to the third input of the second element OR NOT, the amplifier whose output is connected to the signal lamp, and an audible alarm, are entered into the reset box, the element OR, the elements AND-NOT, the additional element OR NOT, the first the input of the first element is NOT connected to the output of the first element OR NOT, the output of the first element AND is NOT connected to the first input of the second. the second input is connected to the output of the reset button; the output of the second element is NOT connected to the second input of the element AND — NOT and the first input of the additional element OR NOT, the output of which is connected to the amplifier input, the second input of the additional element OR NOT connected to the output of the second element OR-NOT and to one of the inputs of the element OR, you move which is connected to the buzzer. The drawing shows a schematic diagram of the device. The device contains the first - the fifth elements OR-NOT 1 - 5, the amplifier 6, the signal lamp 7, the first 8 and the second 9 elements AND-IE, the sensor 10, the buzzer 11, the element OR 12, the check button 13, the N BUTTON. , reset button 15 and generator 16 pulses. The proposed device operates as follows. In the initial state, when the contact of the sensor 10 is closed, one is single. the signal (high potential) from the output of element 9 is fed to the input of element 5, the output signal of the latter is set to zero (low potential), as a result of which the signal lamp 7 is extinguished. From the output of element 1, a single signal is fed to the input of element l, the output of which is set to zero and the buzzer 11 also does not work. At the output of element 2, there is a zero signal. When the contact of sensor 10 or test button 13 is opened, the signal O is set at the output of element 1, the element C starts to pass a pulse signal from the generator 16, as a result of which an acoustic signaling device 11 is turned on & element 5 begins to transmit a pulse signal from element k and the signal lamp 7 flashes. When the contact of the sensor 10 returns to its initial state (the contact closes), the signal lamp 7 switches to the steady glow mode, since a signal 1 is set at the input of the element connected to element 1, and an input is set to O. then the operator, attracted by the audible signal, presses the pickup button k, the signal 1 is set at the output of element 2, the signal at the output of element k is stopped. If the contact of sensor 10 returns to the initial state, the output signal of element 4 remains zero, which at zero output signal of element 9 ensures that the lamp 7 is evenly burning. To return the device to the initial state, you must press the button

15 reset. At the same time, the output of element 9 sets signal 1, with the result that the output signal of element 5 becomes zero and the signal) lamp 7 goes out.

Thus, the addition of new elements ensures the memorization of emergency or short-term violations of any monitored parameter. As a result, the operator has the opportunity to know which channel was damaged, and not only that it was somewhere, how it is obtained by using a known device. By introducing light memory, selectivity becomes possible, i.e. selective alarm of accidental damage.

In addition, selective signaling of short-term self-liquidating violations and malfunctions becomes possible, which allows the staff to take timely preventive measures and prevent the occurrence of damage.

Claims (2)

1. USSR author's certificate rf332 5J, c. C 06cl7 / 00, 1972. 2. USSR author's certificate tUSn, cl. G 08 B 21/00, 197t (prototype).