JP2555503Y2 - Interface for disaster prevention sensor - Google Patents

Description

[Detailed description of the invention] [Industrial application field] The invention is provided in a housing information panel such as an apartment house, a disaster prevention sensor external to the housing information panel, and a multiplex transmission terminal built in the housing information panel. The present invention relates to an improvement in an interface provided between the device and the device.

[Prior art] This type of disaster prevention system used in apartment buildings and the like is realized by connecting by multiplex transmission between an alarm monitoring panel installed in a management room and the like and a housing information panel installed in each dwelling unit. In addition, disaster management information such as gas leaks and fires from gas leak sensors and heat sensors provided in each dwelling unit is monitored intensively in the management room.

In such a system, the signals of the gas sensor and the heat sensor are input to an internal circuit formed by a CPU control circuit in a housing information panel provided in each dwelling unit, and are sent to the control room side through a multiplex transmission terminal. Is transmitted to the alarm monitoring panel.

Fig. 4 shows a housing information panel 100 connected to a gas sensor GS.
FIG. Usually, as a combustible gas sensor, a contact combustion type sensor or a semiconductor sensor is often used.However, these gas sensors GS output a voltage of several volts when there is no gas leakage, and when a warning is given, about volts are output. Because the output voltage rises to about 9 volts,
By selecting the Zener voltage of the Zener diode ZD in the figure to several volts, the transistor Q is activated only at the time of an alarm, the signal is processed by the internal circuit 100a including the CPU, and then multiplexed by the photocoupler PC via the inverter INV. It is configured to transmit by the transmission method. Note that R is a resistor and D is a diode.

FIG. 5 is a circuit configuration diagram when a heat sensor HS or the like is connected to the house information panel. In the case of the heat detector HS, a no-voltage output is normally obtained, and this output is detected by the internal circuit 100a, and a detection signal is input to the multiplex transmission terminal 100b by the photocoupler PC and transmitted to the alarm monitoring panel.

However, in the conventional system as described above,
The multiplex transmission terminal 100b is configured to be operated by the power supply of the alarm monitoring panel. When the power of the information panel is not turned on, detection signals from disaster prevention sensors such as gas sensors and heat sensors are not input to the multiplex transmission terminal 100b, and monitoring is impossible in reality. is there.

[Problem to be Solved by the Invention] The present invention has been made in view of the above circumstances, and even in a dwelling unit where the power of the housing information panel is turned off, the detection signal from the disaster prevention sensor is transmitted to the alarm monitoring panel on the control room side. It is an object of the present invention to provide a system capable of centrally monitoring the disaster prevention of unoccupied dwelling units and the like by adopting a configuration capable of transmitting the information to the public.

[Means for Solving the Problems] The present invention provided to achieve the above object is to send an abnormal signal from a voltage output type sensor such as a gas sensor externally attached to a housing information panel to an alarm monitoring panel. For,
An interface for a disaster prevention sensor incorporated in a house information panel and used for determining an abnormality based on a voltage level output from a voltage output type sensor and outputting an abnormality determination signal, and an alarm monitoring panel A multiplex transmission terminal that has an input element connected through a signal line to be driven in response to an abnormality determination signal from the voltage level determination circuit, and that transmits an abnormality signal to the alarm monitoring panel; An external power supply and the above-mentioned voltage output type sensor are connected to each anode side, and the voltage level discriminating circuit is connected to an output side branched by connecting a cathode in common,
And a diode OR circuit connected to the input element of the multiplex transmission terminal.

[Operation] According to the interface of the present invention, the following operation is performed.

1) When power is supplied to the house information panel Since the diode on the external power supply side of the diode-OR circuit conducts, the diode on the voltage output type sensor becomes reverse biased and becomes non-conductive.

As a result, an external power supply is applied as a driving power supply to the voltage level determination circuit and the input element of the multiplex transmission terminal.

Therefore, if the voltage output type sensor becomes abnormal,
The voltage level discrimination circuit outputs an abnormality discrimination signal, and sends an abnormal signal to the input element of the multiplex transmission terminal and drives it, so that the multiplex transmission terminal sends the abnormality signal to the alarm monitoring panel,
A notification is made.

2) When the power supply to the house information panel is cut off The diode on the external power supply side of the diode or circuit becomes non-conductive, and the diode on the voltage output type sensor side of the diode or circuit becomes conductive.

As a result, the voltage output of the voltage output type sensor is applied to the voltage level discriminating circuit and the input element of the multiplex transmission terminal as driving power.

Therefore, if the voltage output type sensor becomes abnormal,
The voltage level discrimination circuit outputs an abnormality discrimination signal, and sends an abnormal signal to the input element of the multiplex transmission terminal and drives it, so that the multiplex transmission terminal sends the abnormality signal to the alarm monitoring panel,
A notification is made.

Embodiment FIG. 1 is a view showing a gas sensor interface 1 according to an embodiment of the present invention, and a portion surrounded by a dashed line indicates a configuration of a housing information panel.

The gas sensor interface 1 is operated by a power supply voltage of a gas sensor 4 having an internal power supply, and has a voltage level determination circuit 2 that determines an output voltage level from the gas sensor 4 and outputs a gas leak detection signal. A configuration is provided in which a gas leak detection signal is transmitted to the multiplex transmission terminal 3 by driving a photocoupler PC constituting an input element of the multiplex transmission terminal 3 provided at the output end of the determination circuit 2. Have been.

Since the multiplex transmission terminal 3 is supplied with power from the alarm monitoring panel side through a multiplex signal line (not shown), the input terminal can be driven at all times without power supply to the house information panel. ing. In addition, S1 and S2 are voltage output type sensor connection terminals for connecting the gas sensor 4.

Explaining the configuration and operation according to the figure, the gas sensor 4 is connected between the terminals S1 and S2, and when the power is supplied to the house information panel, this power is used when the gas sensor 4 is on alert. Since the voltage is higher than the voltage output, power is supplied to the comparator CMP through the diode D3, and a discriminating operation as described later is performed. At this time, the diode D2 is reverse-biased. The voltage does not act as a driving power supply for the comparator CMP.

On the other hand, when power is not supplied to the house information panel, the power is supplied to the comparator CMP through the voltage output diodes D1 and D2 of the gas sensor 4, and the voltage level determination circuit 2 operates as follows.

That is, since the voltage output of the gas sensor 4 at the time of warning is usually about 4 volts, the voltage output is connected to the resistors R1 and R2.
Is applied to the inverting input terminal of the comparator CMP. The voltage output of the gas sensor 4 is applied to the Zener diode ZD through the diode D1 and the resistor R3, and the Zener voltage is further divided by the resistors R4 and R5, and the divided voltage V 'is applied to the non-inverting input terminal of the comparator CMP. Therefore, if V 'is set higher than V1 during normal alerting, the output voltage of the comparator CMP becomes "H" level, and the photocoupler PC is not driven.

However, when the gas sensor 4 detects a gas leak and outputs a gas leak detection signal, the voltage output rises to about 9 volts at the time of an alarm, so that V1 becomes higher than V 'and the output voltage of the comparator CMP becomes " L level, the photocoupler PC is driven, and a gas leak detection signal is transmitted via the multiplex transmission terminal 3.

FIG. 2 shows a specific digit slide switch 15 of an address setting DIP switch 15 as shown in FIG. 2 (b) when address setting of a multiplex transmission terminal or the like is performed.
In order not to touch a ... (for example, to cover a slide switch that does not need to be changed by mistake, a switch cover A is attached as shown in FIG. 2 (a). It is cut to the required length with scissors or a cutter knife and attached for use. FIG. 2 (c) is a side view showing a state where the switch cover A is attached to the dip switch 15. FIG.

Such a switch cover A is formed by attaching double-sided tapes 11 and 11 to a transparent thin plate 10 such as a Lumirror film and removing the release papers 12 and 12 of the double-sided tapes to form spacers 13 and 13.
Is attached, and double-sided tapes 14 and 14 are further attached thereunder. The dip switch 15 is attached to a necessary portion and used.

[Effects of the invention] Conventionally, despite the fact that various disaster prevention sensors were installed in unoccupied dwelling units, the problem was that centralized monitoring could not be performed in the control room because the power supply to the housing information panel was cut off. By using the disaster prevention sensor interface of the present invention, centralized monitoring can be performed regardless of the power supply of the house information panel, and a more reliable disaster prevention system can be provided.

[Brief description of the drawings]

FIG. 1 is a main part circuit diagram of one embodiment of the present invention, FIG.
(C) is an explanatory view of the use of the switch cover, FIG. 3 is an explanatory view of a procedure for manufacturing the switch cover, FIG. 4 is a conventional interface circuit diagram for a gas sensor, and FIG. 5 is a conventional interface circuit diagram for a heat sensor. It is. [Explanation of Symbols] 1 ... Disaster prevention interface 2 ... Voltage level detection circuit 3 ... Multiple transmission terminal 4 ... Gas sensor

 ──────────────────────────────────────────────────続 き Continued on the front page (72) Inventor Ikeda et al. 1048 Kadoma Kadoma, Osaka Prefecture Matsushita Electric Works, Ltd. (72) Inventor Shun Katayanagi 3-6-1 Shindaka, Yodogawa-ku, Osaka-shi, Osaka Meiji National Inside Industrial Co., Ltd. (72) Inventor Shinichi Nakayama 3-6-1, Shintaka, Yodogawa-ku, Osaka-shi, Osaka Meiji National Industrial Co., Ltd. (56) References JP-A-59-189498 (JP, A) JP-A Sho JP-A-59-210763 (JP, A) JP-A-57-131791 (JP, U) JP-A-57-78493 (JP, U) JP-A-56-41392 (JP, A) U) Japanese Utility Model Showa 60-131095 (JP, U) Japanese Utility Model Showa 60-1553397 (JP, U)

Claims (1)

(57) [Scope of request for utility model registration] 1. An interface for a disaster prevention sensor incorporated in a house information panel for transmitting an abnormal signal from a voltage output type sensor such as a gas sensor externally attached to a house information panel to an alarm monitoring panel. A voltage level determination circuit that determines an abnormality based on a voltage level output from a voltage output type sensor and outputs an abnormality determination signal; and a voltage level determination circuit that is connected to an alarm monitoring panel via a signal line. A multiplex transmission terminal device having an input element driven in response to an abnormality discrimination signal from the terminal and transmitting an abnormality signal to the alarm monitoring panel; an external power supply and the voltage output on each anode side of the two diodes; And a diode connected to the input side of the multiplex transmission terminal on the output side where the type sensor is connected and the cathode is connected in common and branched. Configuration and the emergency sensor interface that includes a Dooa circuit.