CN2105146U

CN2105146U - Multichannel radio remote control switch

Info

Publication number: CN2105146U
Application number: CN 91219669
Authority: CN
Inventors: 舒胜
Original assignee: SOCIAL WELFARE CO SHENZHEN CITY
Current assignee: SOCIAL WELFARE CO SHENZHEN CITY
Priority date: 1991-08-03
Filing date: 1991-08-03
Publication date: 1992-05-20

Abstract

The utility model relates to a multichannel radio remote control switch. The utility model comprises an oscillator, a modulator, a wave detector for receiving and magnifying and a control switch; a plurality of independent oscillators with low frequency input a modulator 9 by each control switch and modulate the carrier frequency of a master oscillator 10; the modulated carrier frequency can be transmitted by an antenna 11; the signals can be received through a super-regeneration wave detector with high frequency amplification 12, a passageway of a limiting amplifier 13 and a buffering isolator 14, and can go into a shunting frequency selector; the shunting signals are processed through each anti-interference shaping circuit 16 and start up a corresponding trigger and latch circuit 17 to control the corresponding switch. The utility model can achieve the goal of the multichannel wireless remote control with high sensitivity, high interference immunity.

Description

Multichannel radio remote control switch

The utility model belongs in the electricity pulse technique according to producing the remote control that signal receives differentiation control.

The remote control switch that existing market is popular is infrared, sound, light, the control of radio single channel or multichannel sequential control mostly.Infrared remote control has orientation, convenience, reliable characteristics, but because command range and directed restriction are difficult to realize omnibearing distant control function; Wireless remote control can reach multi-faceted partition wall to be used, but interference free performance is relatively poor; Chinese patent CN87205121U disclosed " household electrical appliance AC power wireless remote controller " can realize 2 tunnel omnibearing controls, and still transmission, receiving circuit complexity are received and dispatched all need adopt to give and put adjustment, causes operation inconvenience.

The purpose of this utility model is to adopt single supply integrated circuit frequency-selecting amplification, anti-interference shaping loop and trigger the storage circuit device, makes a kind of comprehensive multichannel radio remote control switch.

Principle square frame of the present utility model as shown in Figure 1.

A plurality of low frequencies 1,2,3,4

control switch

5,6,7,8 input modulators 9 by separately that independently vibrate are modulated with the carrier frequency of master oscillator 10, and by antenna 11 emissions.Signal receives through superregenerative high frequency amplification detector 12, passage limiting amplifier 13, buffer isolator 14, enter four shunt of single supply frequency-selector 15, shunting sign is again through separately anti-interference shaping circuit 16, start relative trigger latch cicuit 17, control reaches the purpose of multi-channel and wireless remote-control to inductive switch 18.

Circuit theory of the present utility model as shown in Figure 2.

A plurality of low frequency separate oscillators are made of CD4011 integrated circuit block and RC loop, and its oscillator signal is modulated with the carrier frequency oscillation of being made up of high frequency transistor 9018 and launched by antenna.Press an independently

control switch

5 or 6,7,8, promptly export a corresponding CF signal modulating wave.

The superregenerative high frequency amplification detector 12 that receives path is served as by triode 9018 and High frequency filter loop thereof, low channel limiting amplifier 13 is served as by

triode

9015 and 9013, buffer isolator 14 be one by 9013 emitter followers of forming, make output signal be limited to constant output value.Four shunt of single supply frequency-selector 15 is made of integrated circuit block LM324 and four T type RC frequency-selecting networkings, its input/output terminal has a capacitor C 1C2 coupling is respectively arranged, C1 connects the R1 and the R2 adjustable resistance series loop earthing of each frequency-selective circuit, the tie point of R1R2 is connected to and connects capacitor C 3C4, the other end of C4 connects 2 ends and the resistance R 3 of LM324, the other end of R3 and the other end of C3 are connected to 1 end of LM324 and export by capacitor C 2, LM324 is a four-operational amplifier, other of its 1 end corresponding end along separate routes are 7,8,14 ends, other of its 2 end corresponding end along separate routes are 6,9,13 ends, other of its 3 end corresponding end along separate routes are 5,10,12 ends.3, the 1/2Vcc single supply 6V of 5,10,12 terminating resistor dividing potential drops, 4 termination Vcc single supply 12V, 11 end ground connection.Anti-interference shaping circuit 16 is made up of transistor 9013, RC element and CD4093.9013 base stage connects LM324 output coupling capacitor C2 by resistance R 5, and base stage is also by R6 ground connection.9013 collector electrode is by R7C5 in parallel loop connection+Vcc12 volt power supply, the direct ground connection of emitter.R5, R6 constitute the threshold values ratio and set the loop, and it is adjustable to make anti-interference shaping circuit open threshold values, and R7C5 makeup time constant is set, to suppress the low-and high-frequency disturbing pulse of different time constant.Received signal is by the shaping output of CD4093.Triggering latch cicuit 17 is served as by two double D trigger CD4013, during start, the circuit automatic clear, output is in the low level situation, it is with the putting disconnected correspondence and occur high-low level repeatedly by logical each time of radiating

portion

5,6,7,8 buttons then, thus the open and close of control switch.Control switch can be bidirectional triode thyristor, electromagnetically operated valve, relay.

Low frequency separate oscillators of the present utility model adopts 5,10,15,20 kilo hertzs, and the master oscillator carrier frequency adopts 23～27 megahertzes.

The utility model is simple in structure, easy to operate, with low cost, owing to adopt the anti-interference shaping circuits for triggering of frequency-selecting, makes highly sensitive, strong interference immunity.Increase when sending control button, respective extension is frequency-selector along separate routes, can realize 8,12,16 arbitrarily ... the omnibearing reliable control of multichannel.

Claims

1, a kind of multi-channel and wireless remote-control switch, by oscillator, modulator, receive amplification detector, control switch is formed, it is characterized in that: a plurality of low frequencies control switch that connects separately that independently vibrates connects modulator 9 again, modulate with the carrier frequency of master oscillator 10, and connection antenna 11, reception antenna connects superregenerative high frequency amplification detector 12, the interface channel limiting amplifier 13 again, buffer isolator 14, the back connects four shunt of single supply frequency-selector 15, shunting sign connects anti-interference shaping circuit 16 separately again, start the triggering latch cicuit 17 of corresponding connection, connect inductive switch 18.

2, multi-channel and wireless remote-control switch according to claim 1, it is characterized in that: single supply is the R1 and the R2 adjustable resistance series loop earthing of the input capacitance C1 connection frequency-selective circuit of frequency-selector 15 along separate routes, the tie point of R1R2 is connected to and connects capacitor C 3C4, input 2 and resistance R 3 that another termination integrated circuit block of C4 is one group, the other end of R3 is connected and draws the output 1 that connects same group of integrated circuit with the other end of C3, output 1 serial connection C2 output.

3, multi-channel and wireless remote-control switch according to claim 1, it is characterized in that: the transistor base stage of anti-interference shaping circuit 16 is introduced the frequency-selecting signal by resistance R 5 and is reached and connect R6 resistance earthing, R5, R6 constitute the threshold values ratio and set the loop, and collector electrode is connected positive supply by R7C5 time constant initialization circuit in parallel.

4, multi-channel and wireless remote-control switch according to claim 1, it is characterized in that: trigger latch cicuit 17 and serve as by two double D triggers, circuit automatic clear during start being put disconnected occur repeatedly high-low level, the opening and closing of control switch by logical each time with the radiating portion button then.