SU1305745A1 - Device for signalling deviation of process parameter - Google Patents

Abstract

The invention relates to devices for signaling and signaling and can be used in systems for the protection of electrical lines, machines and devices, in signaling devices about the emergency state of technological processes. The aim of the invention is to improve the reliability and information content of the device, which is achieved by the failure of the sensor 1 and the test signal generator 6, the indicators 11 and 12 are turned on, the failure of the sensor 1 and the test generator 6 are working, the signal 11 is turned on, the test signal generator 6 fails - indicator 12g. In addition, if the sensor fails by the element BANNER 4, the actuating element 5 is turned off. 1 Il.

Description

The invention relates to protection and signaling devices and can be used in protection circuits of electric lines, machines and devices, in alarm systems about the emergency state of technological processes.

The aim of the invention is to raise the signal at the input of the element HE 9 takes place only when the test signal generator 6 is working, since in this case the null-body 8 does not work.

The zero value of the signal at the input of the zero-body 7 occurs when the generator 6 fails the test signal and the zero value of the monitored device reliability and informativity of the meter, if the sensor 1 and the generator fails.

The drawing shows a diagram of the proposed device.

The device contains a sensor 1 of a monitored parameter, a notch / element 2, a threshold element 3, an element BANE 4, an executive element 5, a test signal generator 6, zero-bodies 7 and 8, an element NOT 9, an element I 10, indicators 11 and 12. 20

torus 6 test signal, with the failure of the sensor 1 and the good generator 6 test signal.

The joint appearance of single signals at the inputs of the element And 10 and the corresponding action of the element BANE 4 occurs only when the sensor 1 fails and the test signal generator 6 is in good condition. As a result, the uncertainty in the correctness of the alarm about the value of the monitored parameter occurs only in the case of a joint failure of the sensor 1 and the generator 6 of the test signal. If the sensor 1 fails and the test signal generator 6 is intact, a single signal from the output of the logic element I 10 is fed to the input of indicator 11. The indicator 11 triggers and signals a sensor 1 failure. single signal arrives. The indicator 12 is triggered and signals the failure of the generator 6 test signal.

Along with the actual value signal, the signal of the test value of the monitored parameter, generated by the test signal generator 6, is fed to the input of the sensor 1. In addition, the test value of the monitored parameter from the output of the generator 6 of the test signal is fed to the input of the zero-organ Si The total analog signal from the output of sensor 1 is fed to the input of the notch element 2 and to the input of the zero-body 7. The notch element 2 does not pass to subsequent elements device component corresponding to the test value of the monitored parameter. The component of the analog output signal of the sensor 1, corresponding to the actual value of the monitored parameter, from the output of the notch element 2 enters the input of the threshold element 3. where it is converted into a discrete signal. From the output of the threshold element 3

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The joint appearance of single signals at the inputs of the element And 10 and the corresponding action of the element BANE 4 occurs only when the sensor 1 fails and the test signal generator 6 is in good condition. As a result, the uncertainty in the correctness of the alarm about the value of the monitored parameter occurs only in the case of a joint failure of the sensor 1 and the generator 6 of the test signal. If the sensor 1 fails and the test signal generator 6 is intact, a single signal from the output of the logic element I 10 is fed to the input of indicator 11. The indicator 11 triggers and signals a sensor 1 failure. In the event of a generator 6 malfunction of the test signal from the output of the HE element 9 to the input of the indicator 12 single signal arrives. The indicator 12 is triggered and signals the failure of the generator 6 test signal.

Claims (1)

Invention Formula A device for signaling a technological parameter deviation containing a sensor, the output of which is connected to the input of the first null organ with the input of the notch element, an extraction signal, the corresponding stroke of which through the threshold element is applied to the current value of the parameter being monitored, is input BAN element, the output of which is connected to IS-BAN 4. The passage of this signal by an additional element, the output of the first 3 executive element 5 is a zero-body connected to ne vomu entry in the absence of a signal at the other AND gate, whose output is connected with the second input of the BANCH element, the test signal generator, the output of which is connected to the sensor input, the second, null-organ, characterized in that, in order to increase the reliability and informativeness of the device, two indicators are introduced into it the input of the element BANCH 4. The inhibiting signal to the input of the element BANCH 4 comes from the output of the element AND 10 in the case when the outputs are zero-ory and 7 and the HE element 9 together there are output signals corresponding to zero values at the inputs of the zero-body 7 and the HE element 9. The zero value and the element is NOT, the output of the generator of the test signal at the input of the element HE 9 takes place only when the test signal generator is in good condition 6, since in this case the null-body 8 does not work. The zero value of the signal at the input of the zero-body 7 takes place when the generator 6 fails the test signal and the value of the monitored parameter is zero, if the sensor 1 fails and the generator 0 five 0 (five 0 torus 6 test signal, with the failure of the sensor 1 and the good generator 6 test signal. The joint appearance of single signals at the inputs of the element And 10 and the corresponding action of the element BANE 4 occurs only when the sensor 1 fails and the test signal generator 6 is in good condition. As a result, the uncertainty in the correctness of the alarm about the value of the monitored parameter occurs only in the case of a joint failure of the sensor 1 and the generator 6 of the test signal. If the sensor 1 fails and the test signal generator 6 is intact, a single signal from the output of the logic element I 10 is fed to the input of indicator 11. The indicator 11 triggers and signals a sensor 1 failure. In the event of a generator 6 malfunction of the test signal from the output of the HE element 9 to the input of the indicator 12 single signal arrives. The indicator 12 is triggered and signals the failure of the generator 6 test signal. Invention Formula A device for signaling. On a process variable deviation, containing a sensor, the output of which is connected to the input of the first null organ with the input of the notch element, the output of which through the threshold element is connected to the first input, of the BANGE element, the output of which is connected to the executive element the output of the first null organ is connected to the first input of the AND element, the output of which is connected and the item is NOT, the output of the dough generator is 313057454 signal through the second null-organ is connected to the second input of the element I, connected to the input of the first indicator, the output of which is connected to the input of the second and to the input of the element HE, the output of which is the ry indicator.