JPS59140598A - Contact input type monitoring repeater - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field] The present invention relates to a repeater used in a contact input type monitoring panel such as a fire receiver.

[Background Art] Currently, separate monitoring panels (receivers) are used for fire and gas leakage systems, which is extremely wasteful in terms of cost. In other words, gas sensors generally provide detection power to the receiver when the output voltage reaches a predetermined level, while fire detectors provide on/off signals to the monitoring panel, and each is a voltage signal type. , which is called a contact input type.

However, since there are many common items as a monitoring board,
Compatibility is required.

Purpose of one-shot use] The present invention was made in view of the above points, and its purpose is to enable connection of a voltage signal type sensor such as a gas sensor to a contact input type monitoring panel. The purpose of the present invention is to provide a contact input type monitoring panel repeater.

Disclosure for one shot] Figure 1 shows the basic circuit of the present invention, in which a repeater (3) is provided between the monitoring panel +11 and the voltage output type sensor (2) to interface each signal. be. In other words, when the signal level of the voltage output type sensor (2) reaches a predetermined level, the built-in relay is operated, and the relay contact output is sent to the monitoring panel fi+ as a contact signal. (It is now given from 11 onwards.

FIG. 2 shows an example circuit of the repeater (3), and (4
) is a diode bridge for fully rectifying the signal of voltage output type sensor (2), Trrld diode bridge (
Tr2 is a transistor that turns on when the output of 4), that is, the signal input level reaches a certain level.
The transistor T r 3 is a coupling element transistor for transmitting the ON signal of r l to the next transistor Trs, and the transistor T r 3 is a switching element for driving the relay R7. S+, S2#'i signal input terminal, 11, hij
The lt source input terminal %0+%02 is a contact output terminal.

However, a voltage output type sensor such as a gas sensor (2)
For example, if the signal is not detected and is at 6V, the base current flows through the resistor R3 to the transistor Tr2, which is set so that only the transistor Tr1 does not operate, and the transistor Tr2 is turned on. By turning on, the base current of transistor Tr30 is bypassed,
Transistor Tr3 is off. Therefore, sushi-
In the Rytt off state, the relay contact r is in the off state,
The monitor board (1) is on alert.

Next, when the level between the signal input terminals Sl and 82 is detected and reaches, for example, 12V, a base current determined by the voltage division ratio of the resistors R1 and R2 flows to the base of the transistor Trr, and the transistor Trl is turned on. This transistor T
When rs turns on, the transistor Tr2 turns off, and a base current flows through the base of the transistor Tr3, turning it on. Therefore, relay Ry is energized and relay contact rt
d is turned on, and this on signal is output to contact output terminals 01 and 02.
The message is sent to the monitoring board +I+ via the skin monitoring board (1), and upon receiving this message, the skin monitoring board (1) issues an alarm.

By the way, in this embodiment, when the signal line is disconnected, both transistors Trl and Trz are turned off, and the transistor T
rs is turned on. Therefore, in this case as well, relay RV operates and relay contact T is turned on. Since the monitoring panel (1) also generates an alarm in this case, it is possible to prevent false alarms due to wire breakage. -1 and the diode bridge (4)K make the connection of the signal line non-polarized, thereby eliminating erroneous connections. Note that the operating level of the transistor Tr+ can be appropriately set by the ratio of the resistors R1 and R2.

[Effects of the Invention] Since the present invention is configured as described above, the detection signal of the voltage signal type sensor can be converted into an ON/OFF signal of the relay contact of the relay, and therefore the voltage signal type sensor The device can be connected to a contact input type monitoring panel, providing fire protection,
This has the effect of making it possible to standardize the monitoring panel of the disaster prevention system, and since the driving power for the relay is supplied from the monitoring panel, stable operation can be obtained and reliability is high.

[Brief explanation of the drawing]

Fig. 1 is a block diagram of the basic circuit of the present invention, Fig. 2 is a concrete circuit, where il+ is a monitoring panel, +21 Vi voltage signal type sensor, 13+ Vi repeater, RY is a relay, T is a relay contact, Trr-'Ihke transistor S81%52
The Vi signal input terminal and 1slt are power supply connection terminals. Agent Patent Attorney Ishi 1) Choshichi

Claims (1)

[Claims] il+ A pair of signal input terminals for inputting the signal of the voltage signal type sensor, a first switch element that turns on the signal voltage as power when the signal voltage input to the signal input terminal reaches a certain level, and a monitoring board. A pair of power supply connection terminals that connect the power supply of
A contact signal generation relay connected between the switch element J2 and the power supply connector via the second switch element, and a second switch element that converts the off signal of the first switch element into an on signal of the second switch element. A contact input type monitoring panel repeater, comprising: a coupling element for transmitting information to a switching element.