JPH01100697A - Monitor alarm - Google Patents

Abstract

PURPOSE:To weight signals different in type or to easily control a controlled equipment by transmitting an address signal and type information simultaneously from the characteristic signal generator of plural fire, gas leakage, crime prevention sensors. CONSTITUTION:When a switching element 12 connected to the sensor 11 is turned on, a pilot lamp 13 is lighted and a transmitter OSC is operated, and a start bit, an address bit, a type bit and a stop bit are sequentially preset and outputted for every overflow of a counter 22. Then, an alarm current is modulated and intermittently and repeatedly transmitted to lines l1, l2 through a driver 24. In a receiver, the read information is fed to a processing circuit, weighted according to the type to control a controlled circuit. Accordingly, the controlled equipment can be easily interlocked or the sensor can be exchanged correspondingly to the type.

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention is directed to a sensor in which a plurality of sensors that perform switching operations are connected in parallel between lines, or a plurality of sensors that perform wireless transmission are arranged in a receiving area. , relates to an alarm monitoring device that identifies and displays which sensor is activated in a receiver.

[Prior art] A plurality of on-off type switching sensors are connected between a pair of lines, and when the sensor switches or a wireless sensor operates, an internal vibrator or It is known that an address is specified using a natural frequency generated from a crystal oscillator.

[Problems to be Solved by the Invention] In the conventional system as described above, there are multiple types of sensors connected between the lines or arranged in the receiving area.
It has been extremely difficult to weight different signals for each type or to control different controlled devices for each type. Also, as a solution to this problem, it is possible to have a type table corresponding to the address on the receiver side, but this lacks flexibility as the type table needs to be rewritten when replacing the sensor with another type during maintenance or inspection. There was a problem.

[Means for Solving the Problems] The present invention includes an alarm receiver, and a signal that is connected to a line extending from the receiver to a monitoring target area, or installed in a radio reception area of the receiver, and that generates a signal specific to the alarm when activated. In the alarm monitoring device, the alarm monitoring device is equipped with a plurality of fire, gas leak, crime prevention, etc. detectors each having a unique signal generator that transmits a signal, and the detector is configured to identify and display the operating sensor using the receiver. The above problem is solved by providing means for transmitting both address information and type information representing the type of the sensor.

[Example] FIG. 1 is an example of a circuit block of a sensor of the present invention,
The detector includes a main body 1 having sensors 11 for fire, gas leakage, crime prevention, etc., and a socket 2, and the main body 1 further includes a switching element 1 which is turned on by a sensor 1.
2 and an indicator light 13 connected in series with the switching element 12, these are connected to a pair of lines A1.2 extending from the receiver via a resistor 21 provided in the socket 2. ! It is connected between the two. The socket 2 has a unique signal generator, which includes an oscillator O8C, a counter 22 and a shift register 23 to which the output of the oscillator oSC is applied, and a shift register 2.
A driver 24 to which an output of 3 is applied, and a resistor 21
A unique signal is sent to the receiver by turning both ends of the signal on and off by the driver 24. shift register 23
An address setting bit and a type setting bit are allocated to the address setting part 25 and the type setting part 14 in the socket and the main body l, respectively. These address settings or type settings are performed using a dip switch or the like, but other methods may also be used. For example, for type setting provided on the main body 1, a mark sheet 31 as shown in FIG. If a reflector type photocoupler 32 is placed on the socket side, the main body 1
This makes it easier to attach and detach the socket 2 and the socket 2 and to set the type. Still another method may be to provide a reed switch on the hook 2 side and a magnetic body on the main body side, but is not limited to these.

In such a configuration, when the switching element 12 connected to the sensor 11 turns on, the indicator light 13 lights up, and a circuit (not shown) connects the resistor 211 to the indicator light 13. The remaining voltage is applied to the switching element 12 and the like. Then, when the oscillator O8C operates,
This output is input to the counter 22 and the shift register 23, and each time the counter 22 overflows, the shift register 23 presets the digital signal as shown in FIG. 4 in the order of start bit, address bit, type bit, and stop bit. and output.

This output is input to the driver 24, which controls both ends of the resistor 21 on and off, and the alarm current is modulated by a digital signal and sent to the lines Jt, J'2, and the counter 2
It is intermittently and repeatedly sent to the receiver every two overflows.

To read the type information in FIG. 3, the photocoupler 3
2 may be linked with the output of the counter 22, and the photocoupler may be turned on only when the type information is read.

FIG. 2 shows a block diagram of a processing circuit section that processes such digital signals in a receiver. In the figure, a relay 40 connected in series with line A1 is for detecting the switch operation of a sensor, and a pulse signal sent from line A□ is sent from one end of this relay 40 to a capacitor. It is applied to the AND gate 42 via the C1 amplifier 41. At the same time, a clock signal is applied from the oscillator 43 to the shift register 45, a high level signal is applied from the NAND gate 44 to one input gate of the AND gate 42 by the start bit, and the digital signal on line A is read into the shift register 45. . The read contents are output in parallel, and the address of the motion sensor and the type of the sensor are displayed on the display 46. Finally, the stop bit is NAND gate 4
4, one input of the AND gate 42 becomes low level, the input of the digital signal to the shift register 45 is stopped, and the digital signal is held until reset by the switch 47.

The information read out in this way is further weighted according to the type by another processing circuit, so that it is possible to control a controlled device (all of which are not shown). For example, when it comes to fire detectors, a class 2 smoke detector stipulated by the Fire Service Act operates as a fire alarm, a class 3 smoke detector operates as a smoke prevention device, and a heat sensor operates as a halon-extinguished discharge valve. It is possible to control specific controlled devices according to the characteristics of each sensor, such as activation.

Although the above embodiment is a wired system connected to a pair of lines, it goes without saying that the present invention is also effective in a wireless system.

[Effects of the Invention] The device of this invention can not only specify the address of a sensor belonging to the monitored area, but also determine the type of sensor, so it can interlock or control controlled equipment according to the type of sensor. It has features such as easy handling when replacing a sensor with a different type.

[Brief explanation of the drawing]

The drawings show an embodiment of the device of the present invention, FIG. 1 is a circuit block diagram of the sensor of the invention, FIG. 2 is a block diagram of the signal processing circuit section of the receiver, and FIG. 3 is a type setting device. Fourth
The figures each show a time chart for explaining the operation. DESCRIPTION OF SYMBOLS 1... Sensor body, 2... Socket, 12... Switching element, 13... Indicator light, 14... Type setting part, 25... Address setting part, 23.45... Shift register, 1. A2...railway

Claims (1)

[Claims] a plurality of fire alarm receivers, each having a specific signal generator connected to a line extending from the receiver to a monitored area or installed in a wireless reception area of the receiver and transmitting a specific signal when activated; In the alarm monitoring device, which is equipped with a gas leakage, crime prevention, etc. detector, and in which the operating sensor is identified and displayed by the receiver, the unique signal generator includes address information and a type of the sensor. A monitoring and alarm device characterized by comprising means for transmitting type information together with the information.