JPH0277797U

JPH0277797U -

Info

Publication number: JPH0277797U
Application number: JP15553288U
Authority: JP
Priority date: 1988-11-29
Filing date: 1988-11-29
Publication date: 1990-06-14

Description

[Brief explanation of the drawing]

第１図は本考案で用いる端末装置の一実施例を
示したブロツク図；第２図は本考案で用いる中央
装置の一実施例を示したブロツク図；第３図は端
末装置で正常に応答信号を受信した時の動作を示
したタイムチヤート；第４図は中央装置の動作を
示したタイムチヤート；第５図は端末装置で応答
信号を受信できなかつたときの動作を示したタイ
ムチヤートである。１：端末装置、２：電源線、３：信号線、４：
火災感知器（自己保持型）、５，２１：電源部、
６，１８：制御部（ＣＰＵ）、７，１７：信号処
理部、８，１６：無線送受信部、９，１５：アン
テナ、１０：火災受信部、１１：電源制御部、１
２：復旧用電源制御部、１３：障害警報部、１４
：中央装置、１９：表示部・音響部、２０：火災
信号移報部、２２：予備電池。 Fig. 1 is a block diagram showing an embodiment of the terminal device used in this invention; Fig. 2 is a block diagram showing an embodiment of the central device used in this invention; Fig. 3 shows normal response at the terminal device. A time chart showing the operation when a signal is received; Figure 4 is a time chart showing the operation of the central unit; Figure 5 is a time chart showing the operation when the terminal equipment cannot receive a response signal. be. 1: Terminal device, 2: Power line, 3: Signal line, 4:
Fire detector (self-holding type), 5, 21: Power supply section,
6, 18: Control unit (CPU), 7, 17: Signal processing unit, 8, 16: Wireless transmission/reception unit, 9, 15: Antenna, 10: Fire reception unit, 11: Power supply control unit, 1
2: Recovery power supply control unit, 13: Failure alarm unit, 14
: Central device, 19: Display section/sound section, 20: Fire signal transfer section, 22: Spare battery.

Claims

[Scope of Claim for Utility Model Registration] A fire detector that is installed in a restricted area and outputs a fire signal when a fire is detected; a fire receiver that receives a fire signal from the fire detector via a signal line; When the fire receiving section receives a fire, power is supplied from the battery to the wireless transmitting/receiving section to modulate and transmit the fire signal to the central device, and after the transmission, the wireless transmitting/receiving section is switched to the receiving side and a response signal from the central device is received as specified. A terminal device equipped with a control unit that generates an alarm output when reception cannot be received within a specified time, and a failure alarm unit that performs an alarm operation based on the alarm output from the control unit; Under normal conditions, the wireless transmitting and receiving unit is switched to the receiving side. , when receiving a fire signal from the terminal device, issues a fire alarm and switches the wireless transmitting/receiving unit to the transmitting side;
A wireless fire alarm system comprising: a central device including a control unit that transmits a response signal indicating that a fire alarm has been issued to a terminal device;