SU898481A1 - Multipoint indication device - Google Patents

Description

The invention relates to the automation of production processes, in particular to multipoint monitoring systems of objects, and can be used in process or emergency monitoring of sensors with make contact.

A device for multi-point alarm is known, which contains connected to the power buses via the closing contact of the sensor of the fault receiving relay, the fault latching relay connected to the power buses through isolation diodes and the handshaking and extinguishing buttons and the warning light connected to the tires power supply through the contacts of the signal receiving relay and the relay of the signal failure malfunction. To test the system, a test button and a test relay 1} are provided.

A disadvantage of this device is the presence of three relays for each sensor, which reduces the reliability of the device, and the presence of the HfciM signal lamps in the power bus system, fast and slow flashing light, implies the presence in the device of fast flashing and slow flashing lights that complicate the device.

The closest in technical essence to the present invention is a device for multipoint signaling, containing signaling cells with normally open sensor contacts connected to diodes and signal lamps connected

10 to thyristor cathodes and one tap of resistors, an audible alarm, a pulse generator and control and acknowledgment buttons connected to the relay. In this device, the relay elements

15 in the cell alarm replaced by transistors i2.

A disadvantage of this device is the absence of a short-term memory element that

20 makes it difficult for the operator to make decisions on the information received, and the presence of a pulse generator as a source of flashing light for the prompt detection of the newly arrived

25 signal degrades the reliability of the device and increases the cost of the system.

The aim of the invention is to increase the reliability of the multipoint alarm device, expand its functional capabilities, reduce the cost of manufacturing the system with the widespread use of multipoint monitoring on sites.

The goal is achieved by the fact that a multipoint alarm device containing an audible alarm, a common relay and the number of monitored parameters of the alarm cell, consisting of signals for receiving and storing signals, diodes and signal lamps, in which one output winding of signals for receiving and storing it is connected to the contact of the sensor and connected in series through its normally open contact. and the first diode with one output of the common relay coil, through the second diode with the device operability check bus, another output of the receive coil winding through its closing contact to the minus power supply bus, and through the third diode with the mute bus, the operational detection bus is entered again the incoming signal, connected to the power supply bus through the disconnecting contact of the common relay, warning lamps through the closing and disconnecting contacts of the signal receiving and storing relay are connected respectively to the busbars e prompt detection of the newly received signal and to the power supply bus.

The drawing shows a schematic diagram of the device, for example, for signaling three parameters. The multipoint alarm device contains a buzzer 1, a common relay 2 with disconnecting contact 3, alarm cells 4, consisting of a relay for receiving and storing signal 5, contacts 6-9 of the signal lamp 10 and diodes 11-14, switch off the audible alarm 15, signal memory reset key 16, function check key 17, and operational bus 18 again, 18, parameter 19 sensor contact.

The device works as follows.

When any sensor contact of parameter 19 is closed, plus a power source through the opening contact 6 and diode 11 is supplied to the coil of the common relay 2, which is activated and the closing contact 20 triggers the buzzer 1, and the opening contact .3 tears the operational detection bus 18 and to the winding of the receive and close relay 5 and the signal lamp 10 which, via the disconnecting contact 9 of the receive and store relay signal 5, is connected to the negative power supply bus. The sound signal and the signal lamp on the corresponding cell provide the operator with information about the malfunction.

represented by this cell. By closing the contact of the switch-off key of the sound signal 15 through the diode 12, the winding of the relay for receiving and storing the signal 5 is connected to the minus power supply bus, the relay is activated and with its closing contacts 7 and 8 self-locking of the newly received signal 18, opening contact 6 tears the winding circuit of the common relay 2, the opening contact of which 3 connects the operating detection bus to the negative power supply bus The newly received signal 18, and the closing contact 20 de-energizes the buzzer 1. The incoming signal is memorized, the information is presented to the operator by burning the warning lamp 10.

After the fault has been eliminated, by opening the contact of the memory reset key of the signal 16, the coil of the receiving and storing signal 5 and the warning lamp 10 are de-energized in case of the failure signal and the contact of the sensor of the parameter 19.

Otherwise, the warning lamp 10 lights up and the signal remains in the device’s memory. In case of the next fault signal, when the first one disappears, the next alarm cell triggers in the same way as described, but the first cell warning lamp 10 is connected to the operational detection bus of the newly received signal 18 goes out, But only the signal lamp of the cell is on, into which the malfunction signal has returned.

The device is checked for operation by closing the contact of the functional check key 17, at the same time all the warning lamps 10 light up, the buzzer 1 sounds, and after closing the contact of the buzzer 15 off key, the buzzer 1 turns off and the warning lamps continue to light up. After opening the contact of the reset key of the signal memory 16, the signal lamps 10 go out. Thus, all the apparatus incorporated in the apparatus is tested.

The switch-off key of the buzzer 15 can be used to operate the device in the signal storage mode, providing information by burning lamps, signaling again that the signals did not work, with the remaining signal lamps turned off, if they had previously existed.

Thus, the proposed device provides monitoring of the state of an unlimited number of sensors.

Claims (1)

Claim A device for multi-point signaling, containing an audible signaling device, a common relay according to the number of monitored parameters of the signaling cell, consisting of a relay for receiving and storing signals, diodes and a signal lamp, one terminal of the winding of a relay for receiving and storing signals is connected to the sensor contact and through its own interconnecting contact is connected in series and the first diode with one output of the common relay winding, through the second diode with the device performance check bus, the other output of the signal receiving relay winding through its circuit the contact pin is connected to the minus IQ bus of the power source, and through the third diode to the bus "mute», characterized in that, in order to increase the reliability of the device, an additional bus for operational detection of the newly received signal is connected to it, connected through the NC contact of the general relay to the power supply bus, and the signal lamps through the closing and opening contacts of the reception and memory relays About the signal are connected respectively to the buses for the operational detection of the newly received signal and to the bus of the power source.