JPH0981872A - Adaptor for fire sensor - Google Patents

Abstract

PROBLEM TO BE SOLVED: To wirelessly use a fire sensor by providing a fire sensor adaptor with a contact to be connected to the output terminal of a fire sensor body when the sensor body is operated and wirelessly transmitting the occurance of a fire when the fire sensor is driven. SOLUTION: The input terminals 24, 25 of a transmitter 13 are respectively connected to contacts 14, 15 formed on a case 12. Power supply voltage Vcc is supplied from a battery 21 to be a power supply for the transmitter 13 to a transmission circuit 20. The circuit 20 detects the potential of the input terminal 24 of the transmitter 13, and when the potential falls less than a threshold, transmits a signal indicating the occurance of a fire through an antenna 23. Thereby when a fire occurs, an environmental temperature rises and the contact of a fire sensor element 6 is closed, the potential of the input terminal 24 falls, so that the circuit 20 transmits a signal indicating the effect of the fire occurance through the antenna 23.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a fire detector, and more particularly to an adapter capable of wirelessly changing a conventional fire detector.

[0002]

2. Description of the Related Art A fire detector is widely used for detecting a fire, and its construction is shown in FIG.

FIG. 5 is a cross-sectional view showing a schematic structure of a fire detector. In the figure, 1 is a base, 2 and 3 are contacts, 4 is an opening, and 5 is a fire detector main body (hereinafter simply referred to as main body). 6)
Is a fire sensing element, and 7 and 8 are output terminals.

[0004] The base 1 is for attaching the main body 5 to a predetermined location such as a ceiling, and is detachably engageable with the main body 5. When the base 1 is attached to the ceiling or the like, an opening 4 for drawing in the signal line is provided at a predetermined position on the surface contacting the ceiling or the like. Further, contacts 2 and 3 are provided inside the base 1.

A fire detecting element 6 is housed inside the main body 5, and both ends of the fire detecting element 6 are connected to output terminals 7 and 8, respectively.

Various types of fire detecting elements 6 are known, but here, those having a mechanical contact that does not require a power source, specifically, the contact is closed when the environmental temperature reaches a predetermined temperature. Bimetal shall be used.

The output terminals 7 and 8 of the main body 5 are provided so as to contact the contacts 2 and 3 of the base 1 when the main body 5 and the base 1 are engaged with each other. As a structure for engaging the base 1 and the main body 5,
A well-known structure usually used for engaging the base and the main body in the heat ray sensor may be used. Since the structure for such engagement is well known, detailed description will be omitted.

The fire detector is almost always mounted on the ceiling, and the procedure is as follows. First,
The base 1 is attached to the ceiling, the two signal lines laid behind the ceiling are pulled out from the opening 4, and the contacts 2 and 3 of the base 1 are attached.
Connect to each. And then, the main body 5 on the base 1
Engage and attach.

This completes the installation of the fire detector. This is shown in FIG. FIG. 6 is a cross-sectional view showing a state where the fire detector is attached to the ceiling 10. The output terminals 7 and 8 of the main body 5 are in contact with the contacts 2 and 3 of the base 1, respectively. In the figure, 9 indicates two signal lines. It goes without saying that this signal line 9 is connected to a receiver (not shown).

In this way, the structure in which the base 1 and the main body 5 are engaged with each other makes it possible to restore the function only by replacing the main body 5 when any failure occurs in the main body 5. Of.

[0011]

However, in the conventional fire detector, since it is necessary to lay two signal lines between the fire detector and the receiver, the laying work for that is indispensable, and the cost is high. It was.

Recently, so-called security systems have been adopted not only for tenant buildings and the like, but also for general households to provide a crime prevention warning. Although it is possible to build a comprehensive security system that performs an alarm and a fire alarm, in recent years the security system tends to be wireless, so when incorporating a conventional fire detector as it is, Therefore, it is necessary to lay two signal lines.

That is, in a wireless security system, a security sensor such as a heat ray sensor and a transmitter are provided for emergency push buttons and the like, and when an abnormality occurs, a receiver is notified wirelessly via the transmitter. Therefore, when incorporating a conventional fire detector into such a wireless security system, two signal lines must be laid between the fire detector and the receiver. .

[0014] Therefore, an object of the present invention is to provide a fire detector adapter which can easily make the fire detector wireless.

[0015]

In order to achieve the above object, the fire detector adapter of the present invention can be attached to a ceiling or the like, and the fire detector main body is detachably attached. It has a contact that connects to the output terminal of the fire detector main body when the fire detector main body is engaged, and when the fire detection element is activated, the information that a fire has occurred is displayed. It is characterized in that it is provided with a transmitting means for performing wireless transmission.

Therefore, according to this fire detector adapter, since the conventional fire detector main body can be made wireless simply by attaching it to the fire detector adapter, the already installed fire detector system can be easily made wireless. Not only can it be done, but it can be easily incorporated into a wireless security system.

Further, since it is not necessary to lay a signal line,
It is possible to easily build a fire alarm system even in a special venue such as an event venue.

[0018]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a cross-sectional view showing an embodiment of a fire detector adapter according to the present invention, in which 11 is a fire detector adapter (hereinafter simply referred to as an adapter), 12 is a case, 13 is a transmitter, and 1
Reference numerals 4 and 15 represent contacts.

A transmitter 13 is arranged in the case 12 of the adapter 11. The transmitter 13 has two input terminals, and these two input terminals are connected to the contacts 14 and 15, respectively, as described later.

The contacts 14, 15 are provided so as to contact the output terminals 7, 8 of the main body 5 when the main body 5 of the conventional fire detector shown in FIG. 5 is engaged with the case 12. There is something. As a structure for engaging the case 11 and the main body 5, as described above, a well-known structure that is usually adopted for engaging the base and the main body in the heat ray sensor may be used.

FIG. 2 shows a state in which the adapter 11 and the main body 5 are engaged with each other. In this state, as shown in the figure, the output terminals 7 and 8 of the main body 5 are the contacts 14 and 1 of the case 12, respectively.
5 is in contact with.

In this case, as described above, as the fire sensing element 6, a bimetal which closes the contact when the environmental temperature reaches a predetermined temperature is used, but it has a mechanical contact that does not require a power source, and the fire Any element may be used as long as it closes the contact when it detects.

When installing the fire detector on the ceiling,
First, the case 12 of the adapter 11 may be attached to the ceiling, and then the main body 5 may be engaged with the adapter 11.

The transmitter 13 has the structure shown in FIG. 3, for example. The two input terminals 24 and 25 are connected to the contacts 14 and 15 provided on the case 12, respectively. The input terminal 25 is grounded. One terminal of the resistor 22 is connected to the input terminal 24, and the other terminal is applied with a predetermined power source voltage V _CC from the battery 21 which is the power source of the transmitter 11.

The power supply voltage V is also supplied from the battery 21 to the transmission circuit 20.
_CC is supplied. Then, the transmission circuit 20 detects the potential of the input terminal 24, and if the potential of the input terminal 24 is equal to or higher than a predetermined threshold value, no processing is performed.
When the potential of No. 4 is less than the threshold value, a process of transmitting a signal indicating that a fire has occurred from the antenna 23 is performed.

Therefore, in the case shown in FIG. 2, when a fire occurs and the environmental temperature rises and the contact of the bimetal which is the fire sensing element 6 is closed, the potential of the input terminal 24 drops, so that the transmission circuit 20. Will transmit a signal indicating that a fire has occurred from the antenna 23.

If a long-life battery such as a lithium battery is used as the battery 21, it can be continuously used for about 7 to 8 years.

As described above, if the above-mentioned adapter 11 is used, it is not necessary to lay a signal line, and the fire detector can be installed at any desired location. Further, since the conventional main body 5 can be directly engaged with the adapter 11, the fire detector can be easily made wireless by using the conventional main body 5.

Therefore, a wireless fire alarm system can be constructed by using the adapter 11 described above.

For example, it is necessary to provide a fire alarm system at an event site or the like, but if a conventional fire detector as shown in FIG. 5 is used at that time, two signal lines are laid every time. Although it was necessary, by using the adapter 11 according to the present invention, it is possible to easily construct a wireless fire alarm system simply by attaching the adapter 11 to a desired position and engaging the main body 5 with the adapter 11. it can. In that case, the transmission circuit 20 of the adapter 11
Of course, it is necessary to arrange a receiver capable of receiving the signal transmitted from the.

Further, by using the adapter 11 according to the present invention, it is possible to build a comprehensive security system for providing a security alarm and a fire alarm by incorporating a fire detector into the security system for providing a security alarm. FIG. 4 shows an example thereof.

In FIG. 4, the heat ray sensor 30 is provided with a transmitter (not shown) and is wireless. Therefore, when the heat ray sensor 30 detects an intruder, the heat ray sensor 30 wirelessly transmits a signal indicating that there is an intruder.
Similarly, the emergency push button 31 is internally provided with a transmitter (not shown) to be wireless, and when the button is pushed, a signal indicating that the button has been pushed is transmitted wirelessly.

The fire detector 32 is made wireless by engaging the adapter 11 and the main body 5 described above.
Therefore, when a fire is detected, the transmitter 13 of the adapter 11 transmits a signal indicating that a fire has occurred.

Although only one heat ray sensor 30, one emergency push button 31, and one fire sensor 32 are shown in the figure, this is for the purpose of avoiding the complexity of the figure, and in reality. As a matter of course, a predetermined number is installed.

The receiver 33 has an antenna 34,
It receives signals wirelessly transmitted from the heat ray sensor 30, the emergency push button 31, and the fire detector 32.

Although not shown, the receiver 33 is provided with a threatening means such as a bell, a siren and a floodlight, and if any abnormality occurs, a notification for notifying a security consignee such as a security company through a telephone line A fire is generated from the fire detector 32 when a signal indicating that an intruder is present is received from the heat ray sensor 30, a signal indicating that the button is pressed from the emergency push button 31, and a fire detector 32 are provided. When a signal indicating that is received, the intimidating means is operated and the notifying means notifies the security consignee.

As described above, it is possible to construct a comprehensive security system that provides a crime warning and a fire alarm.

[Brief description of drawings]

FIG. 1 is a cross-sectional view showing an embodiment of a fire detector adapter according to the present invention.

FIG. 2 is a cross-sectional view showing a state in which the adapter 11 shown in FIG. 1 and the conventional fire detector body 5 are engaged with each other.

FIG. 3 is a diagram showing a configuration example of a transmitter 13 in FIG.

FIG. 4 is a diagram showing an example of a comprehensive security system for performing a security alarm and a fire alarm, which is constructed by incorporating a wireless fire sensor using the adapter 11 into a security system for providing a security alarm.

FIG. 5 is a cross-sectional view showing a configuration example of a conventional fire detector.

FIG. 6 is a cross-sectional view showing a state where the base 1 and the fire detector body 5 of FIG. 5 are engaged with each other.

[Explanation of symbols]

1 ... Base, 2, 3 ... Contactor, 4 ... Opening, 5 ... Fire detector main body, 6 ... Fire detection element, 7, 8 ... Output terminal, 11 ...
Fire detector adapter, 12 ... Case, 13 ... Transmitter, 14, 15 ... Contact.

Claims (1)

[Claims] 1. Along with being attachable to a ceiling or the like,
When the fire detector main body is detachably engageable, has a contact that connects to the output terminal of the fire detector main body when the fire detector main body is engaged, and when the fire detection element operates Is a fire detector adapter characterized by comprising a transmitting means for wirelessly transmitting information indicating that a fire has occurred.