JPH0698045A - Alarm detector - Google Patents

Abstract

PURPOSE:To construct a security system by effectively combining with any existent alarm such as a fire alarm or gas leak alarm, for example. CONSTITUTION:Near an existent fire alarm 2a or gas leak alarm 3a which are not provided with a radio transmitter, an alarm detector 50 is provided to detect these alarms are operated. When these alarms are operated, a radio signal is generated from the alarm detector 50, and this signal is received by a receiver 20 and transmitted through a telephone line 30 to an information center 40. When the alarms 2a and 3a are buzzer type alarms, it detects that these alarms are operated by detecting the buzzer tones or vibrations or when those alarms are due to the ON/OFF of lamps, it detects by using a photosensor.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD This invention relates to alarm detectors, and more particularly to detectors for detecting the activation of fire alarms.

[0002]

2. Description of the Related Art Recently, security related to disaster prevention, crime prevention, etc. has been emphasized, and various proposals for it have been made.
The one that has no relation to the existing disaster alarm and newly builds the entire system is the mainstream. For example, when constructing a security system against fire, a wireless transmitter is built into the fire detector, the wireless signal from this wireless transmitter is received by the wireless receiver, and it is sent to the central monitoring center etc. through the telephone line. It is necessary to use a fire detector completely separate from the existing fire detectors, in other words, a fire detector with a built-in wireless transmitter. for that reason,
If you try to build a security system in existing equipment (buildings), you will have to replace the existing fire detector with a new one, which is not only difficult to carry out, but also expensive. there were.

[0003]

[PROBLEMS] The present invention has been made in view of the above-mentioned circumstances, and particularly, to construct a security system by effectively combining it with an existing alarm device such as a fire alarm device or a gas leak alarm device. The purpose of the invention is to provide an alarm detector that can be used.

[0004]

In order to achieve the above object, the present invention provides (1)
An alarm detector, which is arranged in the vicinity of a disaster detector that issues an alarm by the sound of a buzzer or the like, for detecting that the disaster detector operates and issues an alarm. A sensor that detects the sound generated from the disaster detector,
Having a wireless transmitter that generates a wireless signal when the sensor is activated, or (2) being installed in the vicinity of a disaster detector that issues an alarm by the sound of a buzzer or the like, and operating the disaster detector. And an alarm detector for detecting that an alarm is being generated, the sensor generating a wireless signal when the sensor is activated and a sensor for detecting the vibration generated from the disaster detector. It has a wireless transmitter, or (3) is arranged in the vicinity of a disaster detector that generates an alarm by blinking light by blinking a light bulb or the like, and the disaster detector operates to generate an alarm. An alarm detector for detecting such a situation, the detector having a sensor for detecting blinking of light emitted from the disaster detector, and a wireless transmitter for generating a wireless signal when the sensor is activated. It is characterized by. Hereinafter, it demonstrates based on the Example of this invention.

FIG. 2 is a block diagram for explaining an example of a conventional technique of a security system to which the present invention is applied.
In the figure, 1 to 4 are various transmitters, 10 is a repeater, 20 is a security board (receiver), 20 is a telephone line, 40 is an information center, for example, 1 is a pendant receiver, 2 is a fire with a transmitter. An alarm device, 3 is a gas leak alarm device with a transmitter, and 4 is an I.S.
In the D transmitter, the wireless signals from these transmitters 1 to 4 are received by the security board through the relay device, and the communication line 3
The information center 40 is notified via 0. As described above, since the fire alarm, the gas leak alarm, etc. have the transmitter built therein, the existing alarm cannot be used. The present invention is configured so that a security system can be constructed by effectively combining it with an existing alarm device that does not incorporate a transmitter as described above.

FIG. 1 is a diagram showing an example of a case where a security system is constructed by using an alarm detector according to the present invention. In FIG. Reference number is attached. In FIG. 1, 5
Reference numeral 0 is an alarm detector according to the present invention. By installing and using the alarm detector 50 near the alarm devices 2a and 3a, a fire alarm device 2a, a gas leak alarm device 3a, etc. having a built-in transmitter can be used. It is possible to use existing conventional alarm devices as they are without using them (note that in FIG. 1, in order to clearly show that these alarm devices have no built-in oscillator, Use different symbols 2a, 3a). These alarm detectors 50 detect that the fire alarm device 2a, the gas leak alarm device 3a, etc. have actuated. For example, when the alarms of these alarm devices 2a, 3a are caused by a buzzer or the like, A sensor that detects these ringing sounds and a wireless transmitter that is driven by the sensor are built in, so that the same operation as an alarm device that incorporates a wireless transmitter is performed. However, in this case, that is, in the case of a buzzer type alarm, when the buzzer is activated,
Since the buzzer vibrates, it is also possible to detect the vibration of the buzzer to detect that the alarm device is operating. In these cases, of course, it is necessary to activate the wireless transmitter after the alarm device has been activated for a predetermined period of time, or the frequency of malfunctioning due to external noise or the like will increase. However, in order to reduce this difference in erroneous operation, if both the ringing sound detection sensor and the vibration detection sensor as described above are provided and the radio transmitter is operated by the logical product of these sensors, the erroneous operation is minimized. Can be reduced. When the alarm device is based on blinking of light such as an electric light, an optical sensor for detecting the blinking of light may be used as a sensor of the alarm detectors 2a and 3a. It can be easily understood that any desired one can be selected and used according to the method.

[0007]

As is apparent from the above description, according to the present invention, the security system can be constructed at a low cost by effectively utilizing the existing alarm device and with a small amount of work.

[Brief description of drawings]

FIG. 1 is a diagram showing an example of a case where a security system is constructed using an alarm detector according to the present invention.

FIG. 2 is a diagram showing an example of a security system which is currently generally used.

[Explanation of symbols]

1 ... Pendant transmitter, 2 ... Fire alarm with transmitter, 2a
... Fire alarm without transmitter, 3 ... Gas leak alarm with transmitter, 3a ... Gas leak alarm without transmitter, 4 ... I. D transmitter, 10 ... Repeater, 20 ... Security board (receiver),
30 ... telephone line, 40 ... information center, 50 ... alarm detector.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Satoshi Ikeya 1-4-12 Tokiwacho, Shizuoka City, Shizuoka Prefecture TOKAI CORPORATION (72) Inventor Mitsunori Sano 6-16-10 Minamioi, Shinagawa-ku, Tokyo Ricoh Seiki Ware corporation

Claims (3)

[Claims] 1. An alarm detector which is arranged in the vicinity of a disaster detector that issues an alarm by a ringing sound of a buzzer or the like and detects that the disaster detector operates and issues an alarm. The alarm detector includes a sensor that detects a ringing sound generated from the disaster detector and a wireless transmitter that generates a wireless signal when the sensor operates. 2. An alarm detector which is arranged in the vicinity of a disaster detector which issues an alarm by a ringing sound of a buzzer or the like and which detects that the disaster detector is activated to issue an alarm. The alarm detector includes a sensor for detecting vibration generated from the disaster detector and a wireless transmitter for generating a wireless signal when the sensor is activated. 3. An alarm detector which is arranged in the vicinity of a disaster detector which gives an alarm by blinking light by flashing a light bulb or the like, and which detects that the disaster detector is activated to issue an alarm. The alarm detector has a sensor for detecting blinking of light emitted from the disaster detector and a wireless transmitter for generating a wireless signal when the sensor is activated. vessel.