JPH0129679Y2 - - Google Patents

Description

[Detailed Description of the Invention] (Field of Application) The present invention relates to a repeater provided between a sensor and a receiver.

(Problems with the prior art) Generally, this type of repeater responds to the switching operation of a sensor that detects an abnormality, notifies the abnormality with an alarm, and outputs a transmitted signal through a relay, which is transmitted to the receiver. There was something that was transmitted and the receiver reported an abnormality.

The above-mentioned conventional technology does not have a function to stop the transfer function to the receiver, so install a gas detector indoors in an apartment building or hotel, install this repeater on the wall of the hallway, and install the receiver in the manager's room. If a room is installed, gas will not be used if the room is vacant for a long period of time.
Even if the gas supply route to the room is closed, the gas detector may be activated due to other reasons, such as miscellaneous gases coming out of the paint on the walls in the room and becoming highly concentrated in the closed room. These transfers may cause the receiver to ring a bell, causing
It was inconvenient for management.

In addition, if an actual gas leak or malfunction due to miscellaneous gas is reported after moving in or starting to use the accommodation, the manager or the person in charge of the room will be notified by If you want to temporarily stop the alarm bell near the room and check the situation in the room, or if you want to stop ringing after checking, either remove the transmission line from the transmitter signal output terminal to the receiver, or Otherwise, they would have to return to the receiver and perform the bell stop operation, making it impossible to respond to emergencies smoothly.

(Purpose of the present invention) In view of the above-mentioned points, the present invention has been developed to enable the user to easily switch the transmitter function by operating the transmitter function stop switch when reporting an abnormality using only the repeater. The purpose of this is to clarify the operation and eliminate errors.

(Embodiment) The present invention will be described below with reference to FIG. 1, which shows an embodiment of the present invention. Reference numeral 1 denotes a gas sensor which detects an abnormality in gas leakage and switches from an open state to a short circuit state. 2 is a repeater with a pair of sensing terminals 2a, 2 to which the output of sensor 1 is connected.
a _' and a pair of transfer signal output terminals 2b, _2b ' connected to the transmission line to the receiver.
The other end of this DC power source E is connected to the other sensing terminal 2a', and the emitter of a transistor Q ₁ whose base is connected to the voltage dividing point of voltage dividing resistors R ₁ and R ₂ is connected to one end of the DC power source E. This transistor is connected
Connect the collector of _Q1 to the other end of the DC power supply E via the resistor _R3 . Additionally this resistor R ₃ has a base resistance
The base and emitter of the transistor _Q2 are connected in parallel via _R4 , and the first alarm _L1 is connected between the collector of the transistor _Q2 and one end of the DC power supply E. Furthermore, the base and emitter of transistor Q ₃ are connected in parallel to resistor R ₃ via base resistor R ₅ , and relay RY is connected between the collector of transistor Q ₃ and one end of DC power supply E, and this relay RY Connect the contact n which is moved and activated to the transfer signal output terminals 2b and 2b', and connect one fixed contact b of the transfer function stop switch SW, which uses the emitter of the transistor _Q3 as the movable contact a, to this transistor Q. ₃ and connect to the base of this switch.
The other fixed contact c of SW is connected to one end of the DC power supply E via a series circuit of the second alarm _L2 and the protective resistor _R6 . In addition, the first and second alarms L ₁ and L ₂
is an indicator such as a light emitting diode or a lamp.
That is, when a short circuit occurs between the sensing terminals 2a and 2b', a voltage is generated in one voltage dividing resistor _R1 , and the transistor
Q ₁ turns on and voltage is generated across resistor R ₃ . Furthermore, due to the voltage generated across this resistor R ₃ , the transistor Q ₂
is turned on, current flows to the first alarm _L1 , and an abnormality is notified. In addition, when the movable contact a of the switch SW for stopping the transfer function is connected to the other fixed contact c, the second alarm notifies you that the transfer function is possible, and the voltage generated across the resistor _R3 As a result, transistor _Q3 is turned on, relay RY is moved, contact n is closed, and a transfer signal is output from transfer signal output terminals 2b and 2b'. Furthermore, switch SW for stopping the transfer function
When the movable contact a is connected to one of the fixed contacts b, the second alarm will notify that the transfer function has stopped, and the transistor _Q3 will be turned off because its base and emitter will be short-circuited, and the relay will be turned off. No current flows through RY, contact n opens, and transfer signal output terminals 2b, 2
No transfer signal is output from b'.

(Effects) As described above, the present invention is equipped with a switch for stopping the transmission function that controls the operation of the relay, and a second alarm that notifies the position of this switch. Switching can be easily performed by simply operating the switch for stopping the transmission function, and it is also effective in making it clear whether to stop or operate the transmission function, thereby eliminating errors. Furthermore, if a gas detector is installed indoors in a condominium or hotel, this repeater is installed on the wall of the hallway, and a receiver is installed in the manager's room, the gas can be turned off at all times without using gas in an empty room. When it is necessary to do so, it can be easily stopped using a switch to stop the transmission function, and there is no need to remove the transmission line or install a special disconnect switch on the receiver side.

In addition, after moving in, if an actual gas leak is reported or a malfunction caused by miscellaneous gas used in the kitchen, etc., the bell can be stopped immediately on-site during on-site confirmation, and the response can be taken immediately. Treatment becomes smoother.

[Brief explanation of the drawing]

FIG. 1 is a circuit diagram showing an embodiment of the repeater of the present invention. 1...Sensor, 2...Repeater, 2a and 2a'...
...Sensing terminals, 2b and 2b'...Transfer signal output terminals, E...DC power supply, L ₁ ...First alarm, L ₂
... Second alarm, Q ₁ to Q ₃ ... Transistor,
RY...Relay, n...Contact, SW...Transfer function stop switch, a...Movable contact, b...One fixed contact, c...Other fixed contact, _R1 to _R6 ...
…resistance.

Claims (1)

[Scope of utility model registration request] a first switching element that responds to a switching operation of a sensor such as a gas detector or a fire detector;
a first alarm which includes second and third switching elements that operate in response to the first switching element, and which notifies the operation of the sensor by the operation of the second switching element; A relay that responds to the switching element is provided, the relay is configured to transfer the information to the receiver through the contact point of the relay, and a transfer function stop switch that controls the response of the third switching element is provided. A repeater characterized in that a second alarm is provided to notify that the switch is turned to the side that does not block the response of the relay.