JPH0226276B2 - - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a method for notifying that battery voltage has fallen below a limit value that allows steady operation.

Recently, systems have been developed that detect the occurrence of a fire or the presence of an intruder in each residence, provide an emergency notification of the occurrence of a fire, and monitor the inside of the residence.

This system includes a controller installed in each house, various transmitters, thermal boxes, switch boxes,
It consists of a dialer and a receiver at the security center that receives signals from the dialer and determines whether there is a fire or an intruder. Signals are exchanged between the controller and the dialer by wired signal transmission. Signals are sent and received between various transmitters and controllers using weak radio waves.
Signals are exchanged with the switchbox by signal transmission using electric power lines, and signals are exchanged between the dialer and the receiver at the security center over a general subscriber line. Therefore, installation work can be carried out easily.

Disaster prevention, crime prevention, etc. monitoring is carried out by family members when the person is at home, and at a security center when the person is absent.

In addition, in the event that a security guard is not present, a security guard patrols each residence with a portable transmitter and uses the transmitter to determine whether the system in each residence is operating correctly. It is intended to output radio waves with the same content as the output radio waves from the transmitter installed inside. Therefore, the dialer is driven by the controller that receives the radio waves, and the security center receives the signal from the dialer, thereby making it possible to know whether the system in each house is operating accurately.

Therefore, if the battery voltage of a transmitter installed in a house drops below a set value, the transmitter cannot operate stably, making it impossible to reliably detect a fire outbreak, an intruder, etc. In addition, if the original signal of the transmitter needs to be output at the same time when outputting a signal indicating that the battery voltage has fallen below the set value, if the original signal is output later, it may be treated as an erroneous signal. becomes.

The present invention relates to a transmitter installed in each house, which detects whether or not the battery voltage of the transmitter is above a set value, and outputs a battery voltage detection signal when the battery voltage becomes below the set value. In a state where the signal and the transmitter's original output signal must be output simultaneously, the original output signal is output preferentially, and will be explained in detail below with reference to the accompanying drawings showing an embodiment. do.

FIG. 1 is a block diagram of the alarm system.

A is a fire transmitter, B is an emergency button, C is an intrusion transmitter, D is a glass transmitter that outputs a signal indicating glass breakage, and E is a gas transmitter that outputs a signal indicating a gas leak. It is installed indoors to monitor indoor abnormalities. When an abnormality is detected, each transmitter transmits a weak radio wave to the controller K with an assigned code. The controller K receives the weak radio waves with an antenna, converts them to logic level in a receiver, decodes the signals in a microprocessor, and then drives an automatic dialer H to transmit the signals to the receiver I at the security center.
At the same time, a buzzer box F installed in the house is driven to output the same alarm sound as the controller K, and a switch box G is driven to cause the flashlight L to blink.

Figure 2 is a front view of controller K, showing the LED indicating the position of the intrusion transmitter and the abnormality display indicating the abnormal state.
It has an LED, a mode indicator lamp that indicates whether the family member is at home, out, or at night, a mode changeover switch, and a speaker that emits alarm sounds, voice synthesized sounds, etc.

Therefore, if an abnormality occurs while a household member is out, the automatic dialer device will notify the security center of the abnormality, allowing a security guard to be dispatched and the dispatched security guard to issue an alarm by operating a portable transmitter. can be stopped.

In addition, by operating a portable transmitter during a patrol when no abnormality has occurred, the controller K and the automatic dialer H can output a radio wave signal equal to the output radio wave signal of any of the various transmitters described above.
can be activated to check the alarm system.

The present invention will be described in more detail regarding a transmitter installed in each house.

FIG. 3 is a block diagram of a transmitter, showing a sensor 1 that outputs a signal in response to changes in external conditions, an input port 2 that latches the output signal of the sensor 1, and a signal latched at the input port 2. A control unit 3 that outputs a signal for driving the transmitting unit 4 by inputting
and a battery voltage detection circuit 5 which receives a clock pulse signal outputted from the control section 3 and detects the battery voltage at every predetermined period, and outputs from the control section 3 in response to the output signal of the battery voltage detection circuit 5. It is composed of an alarm device 6 and a battery 7 that are driven by a signal.

The operation of the transmitter having the above configuration is as follows.

When the sensor 1 detects a change (abnormality) in the external situation, the abnormality signal from the sensor 1 is latched at the input port 2.

Then, the control section 3 is activated by inputting the abnormal signal latched to the input port 2, drives the transmitting section 4, and transmits a weak radio wave to the controller K indicating the occurrence of an abnormal situation. The controller K that receives the radio wave identifies the type, location, etc. of the abnormal situation, drives the automatic dialer device H to notify the security center of the occurrence of the abnormal situation, and also displays the information provided on the controller K itself. Then, the buzzer box F is activated to output an alarm sound, and the switch box G is activated to cause the flash light L to blink.

Further, when the battery voltage becomes lower than the set value, the battery voltage detection circuit 5 outputs a signal indicating that the battery should be replaced to the control unit 3, and the control unit 3 drives the transmitter 4 to transmit the signal. A weak radio wave is transmitted to device K indicating that the battery should be replaced.

Upon receiving the radio wave, the control unit K identifies that the battery should be replaced and drives the automatic dialer device H to notify the security center that the battery should be replaced, as well as a display provided on the controller K itself. Activate.

The above description has been made of the case where the abnormality signal and the signal indicating that the battery should be replaced are each input independently, but when both signals are input at the same time, the operation is as follows.

The input port 2 is immediately turned ON by an abnormal signal from the sensor 1, and is turned OFF again after approximately 2 seconds, and the battery voltage detection circuit 5 is, for example,
Receiving signals output from the control unit 3 at intervals of seconds
It turns on and detects whether the battery voltage is higher or lower than the set value and inputs this detection signal to the control unit 3. The control unit 3 outputs a signal to the battery voltage detection circuit 5 and then receives the detection signal. The time required to complete the process is approximately 200 msec.

It is assumed that the case where the abnormal signal is input during this 200 msec time period is the case where both signals are input at the same time.

In this case, the control section 3 controls the battery voltage detection circuit 5.
This means that the detection signal has not been received yet. Therefore, by first inputting the signal latched by the input port 2 to the control unit 3 and delaying the input of the detection signal to the control unit 3 for about 2 seconds, the transmitter 4 is first driven to detect the abnormal state. A weak radio wave indicating the occurrence can be transmitted to the control unit K.
When input port 2 is turned off after approximately 2 seconds, a detection signal is input to control unit 3 to drive transmitter 4 again and send a weak radio wave to controller K indicating that the battery should be replaced. can be sent to.

Therefore, the controller K first identifies the type and location of the abnormal situation, drives the automatic dialer H to notify the security center of the occurrence of an abnormal situation, and also displays the display provided on the controller K itself. Then, the buzzer box F is activated to output an alarm sound, and the switch box G is activated to cause the flash light L to blink.

After about 2 seconds, it recognizes that the battery needs to be replaced and drives the automatic dialer H to notify the security center that the battery needs to be replaced. Activate.

As described above, the present invention can notify householders and the security center that the batteries of various transmitters installed in each house should be replaced, so that the batteries of the transmitters can be promptly replaced with normal battery voltage. Not only can this be done, but when an abnormal alarm signal and a signal indicating that the battery should be replaced are input at the same time, the security abnormal signal is given top priority and the alarm is issued, reducing the risk of damage. and at the same time, it is determined that the notification signal that precedes the simultaneous signal indicates a security abnormality, and the notification several seconds later indicates an abnormality in the battery voltage. Therefore, the previous signal is no longer misidentified as an alarm indicating an abnormality in battery voltage, and the most appropriate alarm can be issued, which is a unique effect.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, and FIG. 1 is a configuration diagram of the alarm system, FIG. 2 is a front view of the controller, and FIG. 3 is a front view of the controller.
The figure is a block diagram of the transmitter. 1...Sensor, 2...Input port, 3...Control unit,
4...Transmitter, 5...Battery voltage detection circuit, 6...Alarm, 7...Battery.

Claims (1)

[Claims] 1. In a device that notifies security abnormal conditions,
A sensor 1 that indicates an alarm abnormality, an input port 2 that receives a signal from the sensor 1 and becomes energized for a certain period of time, and a battery voltage detection circuit that receives the signal from the input port 2 and a battery voltage detection circuit that receives the signal from the input port 2 at regular intervals. When the signal from the input port 2 and the voltage abnormality signal from the detection circuit 5 are input at the same time, the signal from the input port 2 is received with priority and the signal from the detection circuit 5 is received with priority, and radio waves are transmitted. A dead battery notification device comprising a control section 3 configured to drive a section 4.