CN206421559U - A kind of emergency alarm button - Google Patents

Abstract

The utility model discloses a kind of emergency alarm button, solve people's imprudence and press after emergency alarm button, cause false alarm, personnel make troubles to background work, the problem of reducing alarm quality, its drip irrigation device is：Inserted sheet, slot, connecting rope are additionally provided with housing, the side of slot is provided with infrared transmitting device, and the opposite side of slot, which is provided with infrared receiver, housing, is additionally provided with infrared control device, closing device；When plate is extracted from slot, infrared receiving device receives infrared emission signal, and infrared control device controls the current supply circuit of closing device circuit plates, when button is pressed, circuit board is started working, a kind of emergency alarm button of the present utility model, when people's imprudence presses emergency alarm button by mistake, emergency alarm button will not also send alarm, after only inserted sheet is extracted, alarm can just be sent by pressing emergency alarm button, and to background work, personnel offer convenience, and improve the quality of alarm.

Description

A kind of emergency alarm button

Technical field

The utility model is related to a kind of alarm, more particularly to a kind of emergency alarm button.

Background technology

Alarm button is also referred to as one-touch alarm button, when the important thing of generation needs urgent alarm, passes through people For quickly press alarm button, it is sent alarm signal, and alarm signal is transferred to pipe by various communication modes Reason personnel or administrative center's platform, administrative staff, which receive, takes effective Strategies for action after signal.

In the prior art, such as Publication No. CN201966098U Chinese patent, a kind of Intelligent alarm button, including it is outer Shell, middle plate and drain pan, it is characterized in that pressing plate is loaded in the spring groove of shell, middle plate and shell, which are loaded, to be combined；Circuit Plate is loaded into package shell, is fastened with cover plate；Assembling drain pan is loaded with drain pan, is fastened with screw.The utility model overcomes The shortcoming of prior art, highly versatile designs convenient to disassembly, is easy to workman's assembling and setting, greatlys save the labor of workman Fatigue resistance, it is workable.

Emergency alarm button can easily reflect a kind of device of emergency as a kind of, operate effectively urgent report Alert button can improve understanding of the background work personnel to user situation, and in practical operation, emergency alarm button is arranged on Obvious place, and emergency alarm button itself is also very obvious, makes child to go by while people also can be by life Cause to press emergency alarm button in imprudence, unnecessary trouble is brought to background work personnel, also improved space.

Utility model content

The purpose of this utility model is to provide a kind of emergency alarm button, when by mistake people's imprudence presses emergency alarm button When lower, emergency alarm button will not also send alarm, after only inserted sheet is extracted, and announcement can just be sent by pressing emergency alarm button Alert, to background work, personnel offer convenience, and improve the quality of alarm.

Above-mentioned technical purpose of the present utility model technical scheme is that：

A kind of emergency alarm button, including housing, circuit board, the button that is arranged on housing, the button is close to housing Side be provided with two pieces of contacts being provided with guide card, the housing with circuit board communication, it is described when the button is pressed Guide card turns on two pieces of contacts on housing, and the circuit board is started working, and inserted sheet, the housing are additionally provided with the housing On be provided with the slot inserted for inserted sheet, be fixedly connected with the connecting rope being fixedly connected with inserted sheet, the slot on the housing Side be provided with infrared launcher for exporting infrared emission signal, the opposite side of the slot be provided be coupled to it is red Outer emitter is also set up with receiving infrared emission signal and exporting the infrared receiving device of received IR signal on the housing Have and be coupled to infrared receiving device to receive received IR signal and export the infrared control device of infrared control signal, be coupled to Infrared control device is to receive infrared control signal and in response to received IR signal to realize the current supply circuit of circuit plates Closing device；

When the inserted sheet is extracted from slot, the infrared receiving device receives infrared emission signal, described infrared Control device controls the current supply circuit of closing device circuit plates, and when the button is pressed, the circuit board is started working；Instead It, does not work.

Using such scheme, when inserted sheet is not extracted from slot, the infrared emission signal of infrared launcher output Do not received by infrared receiving device, when now people's imprudence presses button, circuit board will not also work, and now only need To release manually just can be with, and when running into urgent situation, inserted sheet is extracted from slot, now infrared launcher transmitting Infrared emission signal is received by infrared receiving device, is now closed the current supply circuit of circuit board, now presses button again just Circuit board can be operated, personnel offer convenience to background work, improve the quality of alarm, while after inserted sheet is extracted again It is attached by connecting rope, does not allow inserted sheet easy to lose.

Preferably, the infrared launcher includes being used for the oscillating circuit of outputting oscillation signal, is coupled to vibration electricity Road is to receive oscillator signal and export infrared emission signal to the infrared transmitting circuit of infrared receiving device.

Using such scheme, the setting of oscillating circuit primarily serves the effect of startup in circuit, and oscillating circuit can be carried out Starting of oscillation, and the oscillator signal of certain frequency is exported, signal is launched by infrared transmitting circuit, makes infrared transmitting circuit Output frequency is consistent, improves the stability of infrared transmitting circuit.

Preferably, the infrared receiving device includes being coupled to infrared launcher receiving infrared emission signal and defeated Go out the infrared switch circuit of infrared switch signal, be coupled to infrared switch circuit to receive infrared switch signal and export infrared connect Collect mail number to infrared control device infrared control circuit.

Using such scheme, infrared switch circuit is in circuit as the circuit of an on-off action, when infrared switch electricity Road is received after the red hair transmission signal of red hair emitter output, will be turned on, so that infrared control device is triggered, and be controlled The startup of infrared control device processed, improves the jamproof ability of circuit, practical.

Preferably, the infrared launcher is also coupled to the adjustment dress of the frequency for adjusting infrared emission signal Put.

Using such scheme, the setting of adjusting apparatus makes the frequency of the infrared emission signal of infrared launcher output can To be adjusted, by adjusting the size of adjusting apparatus itself, so as to change the signal frequency of infrared launcher, spirit is used It is living.

Preferably, the infrared launcher is also coupled to the first finger for indicating infrared launcher working condition Showing device.

Using such scheme, the setting of the first instruction device allows instruction situation of the people by the first instruction device, The working condition of infrared launcher is apparent from, people is concerned about the quality of infrared launcher, so as to more preferable Avoid emergency alarm button cisco unity malfunction, it is practical.

Preferably, the infrared control device includes being coupled to infrared receiving device receiving received IR signal and defeated Go out the reverse circuit of energizing signal, be coupled to reverse circuit to receive energizing signal and export the infrared of infrared controlled switch signal Controlling switch circuit, it is coupled to infrared controlled switch circuit to receive infrared controlled switch signal and export infrared control signal extremely The infrared trigger circuit of closing device.

Using such scheme, the setting of reverse circuit is overturn the low level signal that infrared receiving device is exported, So as to which the signal for becoming high level is exported, while coordinating infrared controlled switch circuit, infrared controlled switch circuit is in circuit The middle circuit as on-off action, when the signal that infrared control on-off circuit one receives high level will be turned on, while making red The triggering of external trigger circuit is operated so as to very first time control closing device, and reaction speed is fast, practical.

Preferably, the infrared control device is also opened including being coupled to infrared controlled switch circuit with receiving infrared control The light transmission circuit of OFF signal and output light receiving and transmitting signal, the infrared trigger circuit is coupled to infrared receiving/transmission circuit to connect Receive infrared receiving/transmission signal and export infrared control signal to closing device.

Using such scheme, the setting of light transmission circuit plays buffer action, due to light to input, output electric signal The input of transmission circuit, outlet chamber are mutually isolated, the features such as electric signal transmission has one-way, thus with good electric insulation Ability and antijamming capability.Again because the input of light transmission circuit belongs to the low-resistance element of current mode work, thus have Very strong common mode inhibition capacity.

Preferably, the light R-T unit includes being coupled to infrared controlled switch circuit to receive infrared controlled switch The light emitters of signal and output light transmission signal, it is coupled to light emitters to receive light transmission signal and output light Line receiving and transmitting signal to infrared trigger circuit light receiver.

Using such scheme, light radiating circuit sends the light of certain wavelength, is received by light receiver circuit and produces light Electric current, then exported after further amplification, this completes the conversion of electricity-light-electricity, so as to play input, output, isolation Effect, it is practical.

Preferably, the infrared control device is also coupled to second of the working condition for indicating infrared control device Instruction device.

Using such scheme, the setting of the second instruction device allows maintenance personal according to the instruction of the second instruction device Tentatively the working condition of infrared control device is judged, so as to accelerate the efficiency of maintenance.

Preferably, the closing device is closed including being coupled to infrared control device with receiving received IR signal and exporting Run the closure switch circuit of OFF signal jointly, be coupled to closure switch circuit to receive closure switch signal and in response to closure switch Signal is to realize the closure triggers circuit of the current supply circuit of circuit plates.

Using such scheme, closure switch circuit is in circuit as the effect of switch, when closure switch circuit is received It after the signal of high level, will turn on, and close triggers circuit and corresponded with closure switch circuit, improve jamproof energy Power, while will be turned on after signal when closure triggers circuit one is received, improves the speed of circuit plates current supply circuit, side Persons who happens to be on hand for an errand carry out alarm operation.

In summary, the utility model has the advantages that：

1st, when people do not extract inserted sheet, people's imprudence button, circuit board will not also be operated, subtract The false alarm of people is lacked；

2nd, inserted sheet is attached by connecting line and housing, reduces the loss of inserted sheet；

3rd, the setting of the first suggestion device, allows people to be apparent from the working condition of infrared launcher.

Brief description of the drawings

Fig. 1 is the structural representation of emergency alarm button；

Fig. 2 is the exploded perspective view of emergency alarm button；

Fig. 3 is the subssembly drawing of emergency alarm button；

Fig. 4 is the rearview of emergency alarm button；

Fig. 5 is the enlarged diagram in A-A portions in Fig. 4；

Fig. 6 is the circuit theory diagrams of infrared launcher；

Fig. 7 is the circuit theory diagrams of infrared receiving device；

Fig. 8 is infrared control device, the circuit connection diagram of closing device.

In figure：1st, housing；2nd, circuit board；3rd, button；4th, guide card；5th, contact；6th, inserted sheet；7th, slot；8th, connecting rope；9th, it is red Outer emitter；10th, infrared receiving device；11st, infrared control device；12nd, closing device；13rd, oscillating circuit；14th, infrared hair Transmit-receive radio road；15th, infrared switch circuit；16th, infrared control circuit；17th, adjusting apparatus；18th, the first instruction device；19th, electricity is overturn Road；20th, infrared controlled switch circuit；21st, infrared trigger circuit；22nd, light transmission circuit；23rd, light emitters；24th, light Receiver；25th, the second instruction device；26th, closure switch circuit；27th, triggers circuit is closed；28th, bottom；29th, end cap；30th, it is electric Road box；31st, bolt；32nd, by hole；33rd, spring；34th, stage clip；35th, installing plate；36th, baffle plate；37th, directing plate；38th, non-slip texture； 39th, key；40th, locating part；41st, shackle member；42nd, indicator lamp；43rd, projection；44th, groove；45th, fixture block；46th, neck；47th, key Groove；48th, locked groove is solved.

Embodiment

The utility model is described in further detail below in conjunction with accompanying drawing.

As Figure 1-5, a kind of emergency alarm button disclosed in the present embodiment, including housing 1, circuit board 2, it is arranged at shell Button 3 on body 1, housing 1 includes being wholely set on bottom 28 and end cap 29, bottom 28 and the mutual clamping of end cap 29, bottom 28 Have to be additionally provided with fixture block 45, bottom 28 on the groove 44 being provided with projection 43, end cap 29 for the clamping of projection 43, end cap 29 and set It is equipped with the neck 46 for the clamping of fixture block 45.

As Figure 1-5, circuit board 2 is attached in circuit box 30, and is coordinated by the screw thread of bolt 31, circuit box 30 and end Lid 29 is fixedly connected by bolt 31, is additionally provided with to be provided with button 3, end cap 29 on end cap 29 and is pointed to button 3 for finger By hole 32, being fixedly connected with button 3 prevents from button 3 from ejecting on the limiting plate for pressing hole 32, button 3 being also arranged with spring 33, bullet Spring 33 is contradicted with circuit box 30 and is connected, and also guide card 4, circuit board are bonded with using AB glue close to the side of circuit board 2 on button 3 The two pieces of contacts 5 raised up are provided with 2, two panels contact 5 is set in correspondence with each other with guide card 4, when button 3 is pressed, contact 5 Contradict and be connected with guide card 4.

As Figure 1-5, the key slot 47 inserted for key 39 is additionally provided with end cap 29, be articulated with circuit box 30 with The peace that the installation of voltage supply spring 34 is provided with stage clip 34, end cap 29 is provided with the shackle member 41 of the mutual clamping of locating part 40, fastener Plate 35 is filled, one end and side of the shackle member 41 away from locating part 40 of stage clip 34 are binded by AB glue, the other end of stage clip 34 Binded by AB glue with the installing plate 35 on end cap 29, the solution locked groove 48 inserted for key 39, limit are provided with shackle member 41 Position part 40 is provided with the baffle plate 36 for preventing that key 39 from rotating close to one end of solution locked groove 48, and locating part 40 is another close to solution locked groove 48 One end is provided with the directing plate 37 that guiding key 39 is rotated.When button 3 is pressed, shackle member 41 and the mutual clamping of locating part 40, It is fixed, after key 39 is sequentially inserted into key slot 47, solution locked groove 48, and is rotated to the direction of directing plate 37 by stage clip 34 When, button 3 is ejected again.

As Figure 1-5, inserted sheet 6 is arranged on housing 1, and the slot 7 installed for inserted sheet 6, slot 7 are provided with housing 1 One end be provided with infrared launcher, the other end of slot 7 is provided with infrared receiving device, and when inserted sheet 6 is inserted, infrared Reception device does not receive the infrared emission signal that infrared launcher is launched；When inserted sheet 6 is extracted, infrared receiving device connects Receive the infrared emission signal that infrared launcher is launched.

As Figure 1-5, it is additionally provided with inserted sheet 6 in non-slip texture 38, and inserted sheet 6 and has also been wholely set connecting rope 8, even Hole that one end of splicing 8 is arranged on inserted sheet 6 is simultaneously knotted and fixed to connecting rope 8, and the other end of connecting rope 8 is arranged in shell Hole on body 1 is simultaneously knotted and fixed to connecting rope 8.Indicator lamp 42 is provided with circuit board 2, indicator lamp 42 wears out housing 1。

As shown in fig. 6, infrared launcher 9 includes oscillating circuit 13, infrared transmitting circuit 14.Oscillating circuit 13 includes core Piece U1, resistance R1, resistance R2, resistance R3, electric capacity C1, chip U1 can be NE555, UA555, SL555 time-base integrated circuit, this Preferentially NE555 is used in embodiment.Infrared transmitting circuit 14 is infrared transmitting tube LED1, and adjusting apparatus 17 is slide rheostat RP, the first instruction device 18 is LED 3, and the one end of chip U1 1 pin respectively with ground GND, electric capacity C1 be connected, electric Hold C1 other end one end respectively with resistance R1, chip U1 2 pin, chip U1 6 pin be connected, the resistance R1 other end is distinguished One end of 7 pin, resistance R2 with chip U1 is connected, and the resistance R2 other end is connected with slide rheostat RP one end, is slided and is become Hinder the device RP other end respectively at slide rheostat RP control end, chip U1 4 pin, chip U1 8 pin, resistance R3 one End, the negative electrode connection of LED 3, the anode of LED 3 are connected with power supply VCC, the resistance R3 other end It is connected with infraluminescence pipe LED1 anode, infraluminescence pipe LED1 negative electrode is connected with chip U1 3 pin.

As shown in fig. 7, infrared receiving device 10 includes infrared switch circuit 15, infrared control circuit 16.Infrared switch electricity Road 15 is infrared receiving tube LED2.Infrared control circuit 16 includes electric capacity C2, electric capacity C3, electric capacity C4, electric capacity C5, electric capacity C6, electricity Hold C7, resistance R4, resistance R5, resistance R6, resistance R7, inductance L, chip U2, chip U2 model UPC1373H, chip U2's One end, the inductance L one end of 3 pin respectively with electric capacity C6 are connected, inductance L other end one end respectively with electric capacity C6, resistance R4 One end, chip U2 8 pin, resistance R5 one end, power supply VCC, electric capacity C7 positive pole connection, the resistance R4 other end respectively with The negative electrode connection of electric capacity C2 positive pole, infrared receiving tube LED2, electric capacity C2 negative pole is connected with ground GND, infrared receiving tube LED2 Anode be connected with chip U2 7 pin, chip U2 6 pin are connected with resistance R7 one end, the resistance R7 other end and electric capacity C3 One end connection, the electric capacity C3 other end respectively with ground GND, electric capacity C4 one end, chip U2 5 pin, electric capacity C5 one end, electricity Hinder R6 one end connection, the electric capacity C4 other end is connected with chip U2 2 pin, the electric capacity C5 other end respectively with chip U2 1 The other end connection of pin, resistance R5, the resistance R6 other end point is connected with chip U2 4 pin, electric capacity C7 negative pole.

As shown in Figure 7,8, infrared control device 11 includes reverse circuit 19, infrared controlled switch circuit 20, light transmitting-receiving Circuit 22, infrared trigger circuit 21, the second instruction device 25 are LED 4, and light transmission circuit 22 is sent out including light Emitter 23, light receiver 24.Reverse circuit 19 is phase inverter N1, phase inverter N1 model 74LS240, infrared controlled switch Circuit 20 is triode Q1, and triode Q1 is the triode and model 2SC4019 of NPN type, and infrared trigger circuit 21 is relay Device KM1, light emitters 23 are LED 3, and light receiver 24 is phototriode Q2, light emitters 23, light Line receiver 24 partners photo-coupler.Chip U2 1 pin is connected with phase inverter N1 input, phase inverter N1 output end It is connected with triode Q1 base stage, triode Q1 emitter stage is connected with ground GND, triode Q1 colelctor electrode and light emitting diode LED3 negative electrode connection, the anode of LED 3 is connected with power supply VCC, and phototriode Q2 is coupled to light emitting diode LED3, phototriode Q2 colelctor electrode are connected with relay KM1 one end, and relay the KM1 other end and power supply VCC connect Connect, phototriode Q2 emitter stage is connected with the anode of LED 4, negative electrode and the ground GND of LED 4 Connection.

As shown in figure 8, closing device 12 includes closure switch circuit 26, closure triggers circuit 27.Closure switch circuit 26 Including resistance R8, triode Q3, triode Q3 for NPN type triode and model 2SC4019, closure triggers circuit 27 be after Electrical equipment KM2.Relay normally open contact KM1-1 one end is connected with power supply VCC, the relay normally open contact KM1-1 other end with Resistance R8 one end connection, the resistance R8 other end is connected with triode Q3 base stage, and triode Q3 emitter stage and ground GND connect Connect, triode Q3 colelctor electrode is connected with relay KM2 one end, the relay KM2 other end is connected with power supply VCC.Relay Device normally opened contact KM2-1 one end is connected with power supply VCC, the relay normally open contact KM2-1 other end and one end of circuit board 2 Connection, the other end of circuit board 2 is connected with ground GND.

The course of work：

1st, chip U1 composition the outputting oscillation signal of oscillating circuit 13 give infraluminescence pipe LED1, when inserted sheet 6 be inserted in it is slotting When in groove 7, the signal of infraluminescence pipe LED1 outputs can not be received by infrared receiving tube LED2, and chip U2 1 pin output is high The signal of level, exports low level signal after phase inverter N1, and now triode Q1 base stage receives low level letter Number it is not turned on, now LED 3 is not lighted, and phototriode Q2 is not turned on, and now relay KM1 is not turned on, lighted Diode (LED) 4 is not lighted, and relay normally open contact KM1-1 dead electricity disconnects, and triode Q3 is not turned on, and therefore, relay KM2 is not Obtain electric, relay normally open contact KM2-1 dead electricity disconnects, circuit board 2 must not be electric, and now button 3 is pressed or is not pressed, Circuit board 2 does not work.

2nd, the outputting oscillation signal of oscillating circuit 13 of chip U1 compositions gives infraluminescence pipe LED1, when inserted sheet 6 is from slot 7 During extraction, the signal of infraluminescence pipe LED1 outputs is received by infrared receiving tube LED2, and chip U2 1 pin output is low level Signal, exports the signal of high level after phase inverter N1, and now triode Q1 base stage receives the signal conduction of high level, Now LED 3 lights, and phototriode Q2 conductings, now relay KM1 conductings, LED 4 light, Relay normally open contact KM1-1 obtains electric closure, and triode Q3 is turned on, and therefore, relay KM2 obtains electric, relay normally open contact KM2-1 obtains electric closure, and circuit board 2 obtains electric, and now button 3 is by time, and circuit board 2 works.Now button 3 is not by time, electricity Road plate 2 does not work.

Button 3 unlocks mode：

After button 3 is pressed, spring 33 is deformed upon on button 3, while the locating part 40 on button 3 and shackle member 41 Clamping is carried out, now stage clip 34 is moved downward, when clamping rear compression spring 34 resets upward motion, and realizes that button 3 is locked, and is now led Piece 4 turns on two panels contact 5.

It is key 39 to be used now to need, and key 39 is sequentially inserted into key slot 47, solution locked groove 48, and key 39 is clockwise Rotate, now the lug boss on key 39 is moved downward along directing plate 37, stage clip 34 is compressed downwards, now with button 3 connection locating parts 40 not with the clamping of shackle member 41, spring 33 outwards ejection reset, realize that button 3 resets.

This specific embodiment is only to explain of the present utility model, and it is not to limitation of the present utility model, ability Field technique personnel can make the modification without creative contribution to the present embodiment as needed after this specification is read, but As long as all being protected in right of the present utility model by Patent Law.

Claims (10)

1. a kind of emergency alarm button, including housing (1), circuit board (2), the button (3) that is arranged on housing (1), it is described to press Button (3) is provided with guide card (4), the housing (1) close to the side of housing (1) and is provided with two pieces connected with circuit board (2) Contact (5), when the button (3) is pressed, the guide card (4) turns on two pieces of contacts (5) on housing (1), the circuit Plate (2) is started working, it is characterized in that：It is additionally provided with to be provided with inserted sheet (6), the housing (1) on the housing (1) and supplies inserted sheet (6) connecting rope (8) being fixedly connected with inserted sheet (6), the slot are fixedly connected with the slot (7) of insertion, the housing (1) (7) side is provided with the infrared launcher (9) for exporting infrared emission signal, and the opposite side of the slot (7) is set Have and be coupled to infrared launcher (9) to receive infrared emission signal and export the infrared receiving device of received IR signal (10), it is additionally provided with the housing (1) and is coupled to infrared receiving device to receive received IR signal and export infrared control The infrared control device (11) of signal, it is coupled to infrared control device (11) to receive infrared control signal and connect in response to infrared The collection of letters number is with the closing device (12) for the current supply circuit for realizing circuit plates (2)；

When the inserted sheet（6）When being extracted from slot (7), the infrared receiving device receives infrared emission signal, described red The current supply circuit of outer control device (11) control closing device (12) circuit plates (2), it is described when the button (3) is pressed Circuit board (2) is started working；Conversely, not working.

2. a kind of emergency alarm button according to claim 1, it is characterized in that：The infrared launcher is included for defeated Go out the oscillating circuit (13) of oscillator signal, be coupled to oscillating circuit (13) to receive oscillator signal and export infrared emission signal extremely The infrared transmitting circuit (14) of infrared receiving device.

3. a kind of emergency alarm button according to claim 1, it is characterized in that：The infrared receiving device includes being coupled to Infrared launcher with receive infrared emission signal and export the infrared switch circuit (15) of infrared switch signal, be coupled to it is infrared On-off circuit (15) is to receive infrared switch signal and export received IR signal to the infrared control of infrared control device (11) Circuit (16).

4. a kind of emergency alarm button according to claim 1, it is characterized in that：The infrared launcher is also coupled to useful In the adjusting apparatus (17) of the frequency of adjustment infrared emission signal.

5. a kind of emergency alarm button according to claim 1, it is characterized in that：The infrared launcher is also coupled to useful In the first instruction device (18) for indicating infrared launcher working condition.

6. a kind of emergency alarm button according to claim 1, it is characterized in that：The infrared control device (11) includes coupling Infrared receiving device is connected to receive the reverse circuit (19) of received IR signal and output switching activity signal, be coupled to reverse circuit (19) to receive energizing signal and export the infrared controlled switch circuit (20) of infrared controlled switch signal, be coupled to infrared control On-off circuit (20) is to receive infrared controlled switch signal and export infrared control signal to the infrared triggering of closing device (12) Circuit (21).

7. a kind of emergency alarm button according to claim 6, it is characterized in that：The infrared control device (11) also includes The light that infrared controlled switch circuit (20) is coupled to receive infrared controlled switch signal and output light receiving and transmitting signal is received and dispatched Circuit (22), the infrared trigger circuit (21) is coupled to infrared receiving/transmission circuit to receive infrared receiving/transmission signal and export infrared control Signal processed is to closing device (12).

8. a kind of emergency alarm button according to claim 7, it is characterized in that：The light R-T unit includes being coupled to Infrared controlled switch circuit (20) with receive infrared controlled switch signal and output light transmission signal light emitters (23), Light emitters (23) are coupled to receive light transmission signal and output light receiving and transmitting signal to infrared trigger circuit (21) Light receiver (24).

9. a kind of emergency alarm button according to claim 1, it is characterized in that：The infrared control device (11) is also coupled to There is the second instruction device (25) for indicating the working condition of infrared control device (11).

10. a kind of emergency alarm button according to claim 1, it is characterized in that：The closing device (12) includes coupling In infrared control device (11) with receive received IR signal and export closure switch signal closure switch circuit (26), coupling In closure switch circuit (26) to receive closure switch signal and in response to closure switch signal to realize circuit plates (2) The closure triggers circuit (27) of current supply circuit.