CN2051760U

CN2051760U - Wireless incident reporting device

Info

Publication number: CN2051760U
Application number: CN 89201158
Authority: CN
Inventors: 黎少川; 陈奕
Original assignee: Individual
Current assignee: Individual
Priority date: 1989-01-26
Filing date: 1989-01-26
Publication date: 1990-01-24

Abstract

The utility model relates to a wireless alarm device, comprising a detector, a transmitter and a receive alarm device. The utility model is characterized in that the receiver can automatically recognize a plurality of individual transmitters and can display the alarm locations. Therefore, the utility model is suitable for the joint defense net work of the multi-point detection and multi-point alarm under the appliance condition of a plurality of detector transmitters and plurality of receive alarm devices, so the practicability of the alarm device is enhanced. In addition, the utility model can be used for fire proofing, theft proofing, disease calling and other aspects by using the detectors with different purposes.

Description

Wireless incident reporting device

The utility model is a kind of radio alarming device.

Existing warning device is made up of detector, transmitter and reception warning machine three parts mostly, and wherein transmitter can be divided into modulated signal producing circuit, carrier current channel, radiating circuit three parts again; Receiver can be divided into again height put in the frequency conversion put, demodulator circuit, alarm sound circuit part.As " electronic circuit complete works " (the tissue compiling of editorial office of former volume author＜U.S.〉JOHN Markus metering publishing house) the 23 page of disclosed a kind of silent alarm of books 1, its modulated signal producing circuit is that a tone produces circuit, its shortcoming is that receiver can not discern the transmitter individuality, promptly under the application conditions of a plurality of transmitters, when a certain transmitter is operated in alarm condition, receive the warning machine and can only show alerting signal, and can not show it is which transmitter is being reported to the police, thereby be not suitable for a plurality of detector transmitters, multiple spot under a plurality of reception warning machine application conditions is surveyed the joint defence prestige work that multiple spot is reported to the police.

Task of the present utility model designs a kind of simple in structure exactly, receives the radio alarming device that function is discerned a plurality of transmitter individualities.

It is a m pulse producer that the modulation signal that is characterised in that transmitter of the present utility model produces as circuit, and this signal generator mainly is made up of a square-wave oscillator, a n system counter and a single-pole n-throw switch, and the cut-in point of switch determines the value of m.At the demodulation of receiver and increase by the one m pulse recognition display circuit of alarm sound circuit, this circuit mainly is made up of a n system counter and n light emitting diode.

When detector detected alert, transmitter was promptly started working, and the m pulse producer produces m pulsed modulation and launches on carrier wave.In the receiver, n system counter is counted demonstration to restituted signal, and connects the alarm sound circuit alarm.

N-1 〉=m and get positive integer in the superincumbent narration.

The utility model is because its emission function according to the setting of hardware switch, produces the modulation signal of m pulse when having alert to take place.Simultaneously, receiver is counted m pulse of restituted signal and is shown information corresponding to m numerical value, promptly receives n-1 transmitter individuality of function identification, demonstrates place of alarm.Compared with prior art more accommodate the joint defence work under a plurality of detectors, transmitter and a plurality of reception warning machine application conditions, strengthened the practical value of warning device.

The drawing of accompanying drawing is described as follows:

Fig. 1 is embodiment circuit block diagram of the utility model.

Fig. 2 is the physical circuit of Fig. 1 m pulse producer 2, is designated as 23.

Fig. 3 is the physical circuit of Fig. 1 m pulse recognition display circuit 7, is designated as 24.

Fig. 4 is E point among A among Fig. 2, B point and Fig. 3, output Q ₁The waveform of point.

To tie below with accompanying drawing embodiment and make into detailed description:

Among Fig. 1, each square frame is respectively: detector 1, m pulse producer (modulated signal producing circuit) 2, carrier current channel 3, modulation transmitter 4, height are put frequency conversion intermediate level circuit 5, demodulator circuit 6, m pulse recognition display circuit 7 and alarm sound circuit 8.The purposes and the form of detector 1 are not limit, and only require when it detects alert, and the voltage of output point A is a square-wave pulse, and the value of peak value Up-p should guarantee in the scope of circuit 23 not gates 13 desired input high levels.

In the circuit 23 and 24, trigger 12 adopts the two JK flip-flop 74LS73 of band asynchronous resettings, and circuit 9 is by a Sheffer stroke gate, three not gates and resistance R ₂, R ₃, capacitor C ₁The square-wave oscillator of forming, n system counter 10 and 17 all adopts decade counter CD4017, and promptly value 10,11 is hilted broadsword ten throw switches in present embodiment n, and monostalbe trigger adopts 74LS123, R ₄, C ₂Be its time-delay element, BG ₁To BG ₉Be general light emitting diode, BG ₁₀Adopt 3DG12.Under the situation that the present embodiment typical case uses, resistance R ₂, R ₃, R ₄Be respectively 150 kilo-ohms, 100 kilo-ohms, 3 kilo-ohms, C ₁, C ₂Be respectively 0.02 microfarad and 1 microfarad.

Detector 1 output terminals A one tunnel links to each other with rejection gate 15 1 input ends of circuit 23.The input end of other end Sheffer stroke gate 13 links to each other, and the input termination numerous of not gate 14 strikes on 3 the output terminal, and its output terminal links to each other with the clock pulse input terminal CLK of trigger 12, and the J of trigger 12, K hold and be attempted by resistance R ₁An end, R ₁The other end and power supply E _cLink to each other.The output terminal of rejection gate 15 links to each other with the clear terminal R of trigger 12, and the defeated Q of place of trigger 12 receives in the square-wave oscillator 9, when it is high level, and oscillator 9 work, oscillator 9 is not worked during for low level.The C point is the output of oscillator 9, links to each other with decade counter 10CLK pin, and B is the shaping output of C point signal, links to each other with the modulation signal input end of modulation transmitter 4.Trigger 12 output Q link to each other with the Enable Pin G and the clear terminal R of decade counter 10, when R was high level, decade counter 10 resetted, and output " 1 " to " 9 " is low level, when R is low level, allow its step-by-step counting to the input of CLK pin.Fixed contact D AND 15 1 input ends of hilted broadsword ten throw switches link to each other; Nine moving contacts link to each other with " 1 " to " 9 " individual output terminal of counter 10 respectively.In the present embodiment, fixed contact D connects with the moving contact corresponding to the decimal system 10 output terminals " 5 ", has determined that promptly value is 5.

The output terminal E of demodulator circuit signal 6 links to each other with the input end of circuit 24 not gates 19, and output terminal Sheffer stroke gate 20 input ends of not gate 19 link to each other, the output one tunnel and the monostalbe trigger 16 input end B of not gate 20 ₁Connect, the input end of not gate 21 is linked on another road, and not gate 21 output terminals are linked the input end of not gate 22, and the output of not gate 22 links to each other with decade counter 17 counting end CLK.The A of trigger 16 ₁The Enable Pin G ground connection of input end and counter 17, trigger 16 output Q ₁, 17 clear terminal R link to each other with counter, " 1 " of counter 17 to " 9 " output terminal respectively with light emitting diode BG1 to BG ₉The anode that gets links to each other, BG ₁To BG ₉Negative terminal link and receive resistance R together ₅One end, resistance R ₅The other end and triode BG ₁₀The collection utmost point connects triode BG ₁₀Collector is connected on the earth point of alarm sound circuit 8 local circuits, emitter welding system ground.

When detector 1 does not detect alert, circuit 23 is the quiescent operation state, its A point is a low level, trigger 12 output Q are low level, and square-wave oscillator 9 is not worked, and trigger 12 output Q are high level, make decade counter 10 zero clearings, " 1 " to " 9 " output terminal is low level, and the D point also is a low level, and trigger 12 clear terminal R are high level.

When detector 1 detected alert, output voltage rose to high level by low level, at this moment, trigger 12 clear terminal R are low level, make trigger 12 zero clearings, and its output Q is a low level, Q is a high level, and decade counter 10 still is in cleared condition, and the D point is a low level.

When detector 1A point output voltage drops to low level by high level, trigger 12R point is a high level, allow trigger 12 actions, the negative edge of A point voltage is through not gate 13, make trigger 12 state turnovers after 14 time-delays, output Q becomes high level, square-wave oscillator is started working, export Q simultaneously and become low-voltage, allow decade counter 10 to begin counting work, when counter 10CLK pin received 5 square-wave pulses, its " 5 " output terminal became high level by low level, the D point of switch 11 also becomes high level, thereby make trigger 12 clear terminal R become low level, trigger 12 is cleared, and output Q is a low level, square-wave oscillator is quit work, the output of the B of circuit 23 point is exactly 5 square waves like this, and simultaneously, output Q is a high level, make counter 10 zero clearings, " 1 " to " 9 " end is output as low-voltage, and the D point is a low level, and trigger 12 clear terminal R heavily are high level.

When circuit 23 was in static state, the E point was a low level, and this moment, circuit 24 also was in static state, and monostalbe trigger 16 output Q are high level, make counter 17 zero clearings, and its output " 1 " is low level to " 9 ", light emitting diode BG ₁To BG ₉All do not work triode BG ₁₀Also not conducting, alarm sound circuit 8 is not worked.

When detector 1 detected alert, circuit 24E point was 5 continuous pulses, after not gate 19,20 integers, triggered monostalbe trigger 16 on the one hand, made output Q ₁Become low level by high level, allow counter 17 to begin counting, deliver to counter 17 countings through not gate 21,22 again simultaneously, when 17 to 5 pulses of counter, output terminal " 5 " becomes high level by low level, light emitting diode BG ₅Conducting, BG simultaneously ₁₀Conducting is started working the alarm sound circuit, sounds the alarm.Monostalbe trigger 16 is through time-delay 0.7R ₄C ₂After, output Q ₁Become high level by low level, make counter 17 zero clearings, output " 1 " is low level to " 9 ", light emitting diode BG ₁To BG ₉Not conducting is luminous, triode BG ₁₀Also become and end, the alarm sound circuit quits work.

Claims

1, puts the radio alarming device that frequency conversion intermediate level circuit 5, demodulator circuit 6, alarm sound circuit 8 are formed by detector 1, modulated signal producing circuit 2, carrier current channel 3, modulation transmitter 4, height for one.The modulated signal producing circuit 2 that is characterised in that of the present utility model is a m pulse producer, this signal generator mainly by a square-wave oscillator 9 ,-n system counter 10 and a single-pole n-throw switch 11 form, between demodulator circuit 6 output point E radon ň  unpolished rice bright-coloured plaited straw earth point GRD, increase a m pulse-recognition circuit 7, this circuit mainly is made up of-n system counter 17 and n-1 light emitting diode, demonstration is counted in 6 output pulses to demodulator circuit, and the local ground connection of control alarm sound circuit is with systematically open close.

2,, it is characterized in that n-1 moving contact of single-pole n-throw switch links to each other with n system counter " 1 " to " n " output terminal respectively, the value of the cut-in point decision m of switch according to the radio alarming device in the claim 1.