JPH03201096A - Wireless alarm system - Google Patents

Abstract

PURPOSE:To easily perform centralized supervision by plural outfitted sensors by enabling one or plural fitted sensors to be connected to a slave unit in which a sensor is directly fitted via a signal line and also, to an external power source. CONSTITUTION:One or plural fitted fire sensors 18 are connected to the slave units 10-2 to 10-n in which a fire sensor 12 is directly fitted by drawing out the signal line 20. Also, an AC power source adaptor 24 can be connected to compensate the shortage of a power source due to the connection of the fitted fire sensors 18. When a wide area is supervised, it is possible to easily perform the centralized supervision by the plural fitted sensors 18 by connecting one or plural fitted sensors 18 to the slave unit via the signal line, or connecting the external power source. Also, it is possible to reduce a system cost by saving the installing number of slave units, and to perform supervision carefully by connecting the plural fitted sensors 18 to the slave unit 10.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a wireless alarm system for monitoring abnormalities such as fire.

[Conventional technology] Conventionally, in order to monitor fires at construction sites such as buildings, a slave unit with a fire detector directly attached externally was installed on the ceiling side of a warning area, and when a fire signal was received from the fire detector, A wireless alarm system has been proposed in which an abnormality detection signal is transmitted wirelessly to a parent device to notify the user of an abnormality. The slave unit has a built-in battery power supply, and can be freely installed in any desired location.

[Problems to be Solved by the Invention] However, such conventional wireless alarm systems have a structure in which one fire detector is directly externally attached to the subunit housing, which makes it difficult to monitor when the monitoring area is large. However, there are problems in that a large number of spares equipped with sensors must be installed, which increases equipment costs and complicates the management of battery power sources.

The present invention was made in view of such conventional problems, and an object of the present invention is to provide a low-cost wireless alarm system that can effectively monitor a wide area even with a single reserve. shall be.

[Means for Solving the Problems] To achieve this object, the present invention is configured as follows. In addition, the reference numerals of the drawings of the embodiments are also indicated.

First, the present invention includes a sensor 12 for detecting an abnormality such as a fire,
A spare 1 that transmits an abnormality detection signal when the sensor 12 is directly fitted to the housing and receives an abnormality signal from the sensor 12;
0, and an intimate 14 that notifies an abnormality when receiving an abnormality detection signal transmitted from the reserve 1.
The present invention is directed to a wireless alarm system in which the backup 10 and the sensor 12 are operated by a battery power supply 16 provided at 0.

In the present invention for such a wireless alarm system, the spare 10 is provided with a signal line connection for drawing out a signal line 20 for connecting one or more external sensors 18 to the sensor 18. 22, and an external device connected to the signal line 20 drawn out from the signal line connection section 22 is a power connection section 26 that connects an external power supply 24 that supplies power to the sensor 18, and the signal line connection section 22. A receiving section 28 that receives an abnormal signal input from a signal line 20 connected to the receiving section 28 is provided, and an abnormality detection signal is transmitted even when the receiving section 28 receives an abnormal signal.

[Function] According to the wireless alarm system of the present invention having such a configuration, when monitoring a wide area, one or more external sensors are connected to the signal line as a backup, and an external power source is connected. By connecting multiple external devices, you can easily centrally monitor multiple external devices using sensors, and the system cost can be significantly reduced by requiring fewer spare devices. By connecting, you can closely monitor the wood grain.

[Embodiment] FIG. 1 is a system configuration diagram showing an embodiment of the present invention.

In FIG. 1, 10-1.10-2.・・◆１０
-n is a spare, and the spare 10-1 shows the case where it is installed alone, and the spares 10-2 to 10-n show the case where the external fire detector 18 is connected. That is, reserve 1
0-1 to 10-n have a fire detector 12 directly fitted in the lower part of the spare housing to detect fire. In addition, in the reserve according to the present invention, as will be made clear in the explanation later, the reserve 1
As shown in 0-2 to 10-n, one or more external fire detectors 18 can be connected by pulling out the signal line 20, and the directly fitted fire detector 12 and the preliminary operation itself can be It is powered by a built-in battery, but the external one is powered by a commercial AC10 to compensate for the power shortage caused by connecting a fire detector.
An AC power adapter 24 as an external power source that converts 0V into a specified DC voltage and supplies it can be connected. Note that a terminating resistor R for monitoring disconnection is connected to the terminal end of the signal line 20.

Here, the basic function of the spares 10-1 to 10-n is to wirelessly transmit an abnormality detection signal when a fire signal is received from the fire detector 12.

The intimate 14 is installed for the spares 10-1 to 10-n. The intimate 14 receives radio waves from the spares 10-1 to 10-n. When receiving a radio wave from any of the spares 1O-1 to 10-n, it performs signal processing to verify the unique address signal. When the unique address signal matches a preset unique address on the standby side, the received data is processed, and if an abnormality detection signal, for example a fire detection signal, is determined, a fire alarm is issued to notify the abnormality.

FIG. 2 is a block diagram showing an embodiment of the preliminary 10 of the present invention shown in FIG. 1.

In FIG. 2, a fire detector 12 is directly fitted into the spare 10, and the fire detector 12 is supplied with a power supply voltage Vcc, for example DC 12V, from a built-in battery power supply 16. The output of the fire detector 12 is given to a first fire receiving circuit 30, and the received output is given to a control circuit 34 via an OR gate 32. The control circuit 34 is provided with a wireless communication function with the intimate 14, and includes an address setting section 36 for setting a backup address, and a display circuit 35 for lighting an external warning indicator when an abnormality is detected. Upon receiving the fire detection signal from the OR gate 32, the control circuit 34 creates a transmission format that includes at least address, data, and check code, and uses the synthesizer circuit 38 to generate the MSK.
The signal is modulated according to the method and transmitted from the antenna 42 via the transmitting circuit 40.

Such a spare IO configuration is the basic configuration only when the fire detector 12 is directly fitted, but in addition to this, in the present invention, the signal line 20 is pulled out and one or more external connections are connected. A signal line connection part 22 to which the fire detector 18 can be connected, and a signal line 2 drawn out from the signal line connection part 22
0 is an external power source that supplies power to the fire detector 18, for example, from a power connection section 26 to which an AC power adapter 24 is connected, and a signal line 20 connected to a signal line connection section 22. A second fire receiving circuit 28 is provided to receive the abnormality signal. The reception output of the second fire receiving circuit 28 is given to the control circuit 34 via the OR gate 32, and therefore the control circuit 34 is connected to the second fire receiving circuit 28.
The reception output of 8, that is, the external connection connected via the signal line 20, also transmits an abnormality detection signal regarding the fire signal from the fire detector 18, as in the case of the directly fitted fire detector 12.

Here, the external fire detector 18 connected via the signal line 20 is a fire detector used in ordinary fire alarm equipment, so it requires a DC 24V operating power supply. Therefore, the AC power adapter 24 as an external power source connected to the power supply connection part 26 is a commercial AC 100V.
DC24V is supplied based on. Using the built-in battery 16 while receiving power from the AC power adapter 24 will unnecessarily shorten the battery life, so a regulator circuit 44 is provided to supply power from the AC power adapter 24 (
7) DC24V is converted to DC12Vi and m and outputted as tevcc to supply power to the directly fitted fire detector 12 and each circuit section in the spare IO.

In addition, in the embodiment shown in Fig. 2, the external power source is commercial A.
Although an AC power adapter 24 that generates DC 24V from C100V is shown as an example, a 24V battery may be connected. Furthermore, the fire detector 12 that is directly fitted to the reserve 10 is of a self-recovery type that stops outputting the fire detection signal when physical phenomena associated with a fire change, such as when smoke concentration or temperature reaches a non-fire level. I am using an external fire detector 18, but once a fire is detected,
Since it is a self-holding type that maintains the fire detection state, the second fire receiving circuit 28 side is equipped with an external recovery circuit that temporarily cuts off the power supply to the fire detector 18 and restores it based on a command from the control circuit 34. It is desirable to provide

FIG. 3 is an explanatory diagram of the external appearance of the spare 10 in the present invention,
The spare 10 has a fire detector 12 directly fitted into the lower part of the box-shaped housing 46, and the fire detector 12 can be adjusted to 12" as required.
It can be removed as shown. The reserve 10 can also be installed on the ceiling side of the monitoring area via the mounting angle 48. Further, an antenna 42 and an alarm indicator light 50 that lights up when an abnormality is detected are provided on the lower side of the housing 46 of the spare 10.

FIG. 4 shows the back side of the housing 46 of the spare 10 shown in FIG. 3, and the battery power source 16 is housed in the back cover 52.
Also, externally there is a pair of signal wires 20 that connect the fire detector 18.
A terminal constituting the signal line connection section 22 for connecting the
A power supply connection section 26 is provided which is made up of a pair of terminals to which an AC power adapter 24 as an external power supply is connected. Each terminal of the signal line connection section 22 and the power supply connection section 26 is provided with a back cover 52.
A signal line and a power supply line are drawn through the opening 54 .

Note that 56 and 58 are rotary dip switches for address setting that constitute the address setting section 36 in FIG.

As is clear from the above configuration, in the wireless alarm system of the present invention, as shown in the backup 102.10-n in FIG. By connecting the external fire detector 18 and supplying power from the outside by connecting the AC power adapter 24,
In addition to the fire detector 12 that is directly fitted to the spare, the signal line 20
Fire monitoring can be carried out using an externally attached fire detector 18, and even a wide warning area can be sufficiently covered by installing one spare unit, and the number of spare units to be used can be reduced. Allows for more detailed monitoring.

Incidentally, although the above-mentioned embodiment takes fire monitoring as an example, it goes without saying that monitoring of gas leakage, theft, etc. may be performed in addition to this.

[Effects of the Invention] As described above, according to the present invention, one or more external devices can be connected to a spare directly fitted with a sensor via a signal line, and an external power supply can be connected to the sensor. Since it is possible to connect multiple external sensors, central monitoring using multiple sensors can be easily performed, and even in large security areas, the number of spare units installed is small, which greatly reduces system costs. Additionally, by connecting an external sensor, more detailed monitoring is possible.

[Brief explanation of drawings]

Figure 1 is a system configuration diagram of the present invention; Figure 2 is a configuration diagram of a preliminary embodiment of the present invention; Figure 3 is a preliminary external view of the present invention; Figure 4 is an explanatory diagram of the preliminary back side of the present invention. be. In the figure, 10, 10-1 to l0-n: Spare 12: Fire detector 14: Intimate 16: 11 Pond power source 18: External fire detector 20: Signal line 22: Signal line connection part 24: AC power adapter (External power supply) 26: Power supply connection section 28: Second fire reception circuit 30: First fire reception circuit 32: OR gate 34: Control circuit 35: Display circuit 36: Address setting section 38 Synthesizer circuit 40: Transmission circuit 42 : Antenna 44: Regulator circuit 46: Housing 48: Mounting angle 50: Alarm indicator 52: Back cover 54: Opening

Claims (1)

[Claims] 1. A sensor that detects an abnormality such as a fire, and a slave unit that directly fits the sensor into a housing and transmits an abnormality detection signal when receiving an abnormality signal from the sensor. and a master unit that notifies an abnormality when receiving an abnormality detection signal transmitted from the slave unit, and the slave unit and the sensor are operated by a battery power source provided in the slave unit. In the type alarm system, the slave device includes a signal line connection part for drawing out a signal line for connecting one or more external sensors in addition to the sensor, and a signal line drawn out from the signal line connection part. A power supply connection part that connects an external power supply that supplies power to the external sensor connected to the signal line, and a reception part that receives an abnormal signal input from the signal line connected to the signal line connection part. , A wireless alarm system characterized in that an abnormality detection signal is transmitted even when the receiving unit receives an abnormality signal.