CN2294545Y - Radio frequency remote control switch - Google Patents
Radio frequency remote control switch Download PDFInfo
- Publication number
- CN2294545Y CN2294545Y CN 97207792 CN97207792U CN2294545Y CN 2294545 Y CN2294545 Y CN 2294545Y CN 97207792 CN97207792 CN 97207792 CN 97207792 U CN97207792 U CN 97207792U CN 2294545 Y CN2294545 Y CN 2294545Y
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- CN
- China
- Prior art keywords
- circuit
- triode
- remote control
- utility
- model
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- Expired - Fee Related
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Abstract
The utility model discloses a radio-frequency remote control switch which is composed of a transmitting part and a receiving control part. The transmitting part comprises an oscillator and a multivibrator, and the multivibrator can generate modulation wave. The receiving control part comprises a high frequency receiving circuit, a signal amplifying circuit, a comparator circuit and a control circuit. The utility model adopts a radio-frequency signal remote control switch which has ultrahigh frequency; thus, the utility model has the advantages that the anti-interference performance is strong, the false action can not be generated, the utility model is not influenced by a barrier, the distance of the remote control is far, and the distance of the remote control can reach to 30 meters. The utility model is suitable for a household, a hotel, an office and other situations in which the opening action and the closing action of the electric appliances are needed to be remotely controlled.
Description
The utility model relates to a kind of home-use remote control, particularly a kind of device that the power on/off of domestic electric appliances is carried out remote control.
Existing home-use remote control switch mostly is the switch of acoustic control formula, light-operated and infrared remote control, and in use all there is certain limitation in these switches.Acoustic control, light-operated switch need just can control by means of sound, light, and easily misoperation take place.The switch of infrared remote control then has directivity restriction, and also is subjected to the influence of obstacle body when using.
The purpose of this utility model is: provide that a kind of structure is simple, cost RF remote-controlled switch lower, easy to use.It is to be made of radio-frequency transmissions part and reception control section, adopts hyperfrequency to transmit, and remote control distance can reach 30 meters.Can be applicable to the occasion that family, hotel, office etc. need carry out remote control to the open and close of electrical appliance.
Formation of the present utility model: comprise radiating portion and receive control section, radiating portion comprises, comprise by radiating portion, the oscillator that constitutes by triode T3, inductance L 1, capacitor C 3, C4, the multivibrator of the generation modulating wave that constitutes by triode T1, T2, capacitor C 1, C2, resistance R 1, R2, R3, R4; The reception control section comprises, the hyperfrequency receiving circuit that triode T4, inductance L 2 constitute, the signal amplification circuit that operational amplifier IC1 constitutes, the full-wave rectifying circuit that diode D2, D3 constitute, the comparison circuit that operational amplifier IC2 constitutes, the control circuit that the rectifier that triode T5, T6, controllable silicon SD1 and diode D7, D8, D9, D10 form constitutes.
In the hyperfrequency receiving circuit of above-mentioned RF remote-controlled switch, the base bias circuit of triode T4 is connected to diode D1.
In the comparison circuit of aforesaid RF remote-controlled switch, operational amplifier IC2 negative input end is connected to capacitor C 7 over the ground; Between power supply two inputs, be connected to filter capacitor C11.
Compared with the prior art, the utility model is owing to adopt the radiofrequency signal remote control switch of hyperfrequency, therefore have strong interference immunity, can not misoperation, be not subjected to the characteristics that the obstacle body influences, remote control distance is far away.Remote control distance can reach 30 meters.
Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail.
Accompanying drawing 1 is an electrical schematic diagram of the present utility model;
Embodiment: formation of the present utility model comprises radiating portion and reception control section, and Fig. 1-a is depicted as radiating portion, and Fig. 1-b is depicted as the reception control section.Radiating portion comprises, the oscillator that is made of triode T3, inductance L 1, capacitor C 3, C4, the multivibrator of the generation modulating wave that is made of triode T1, T2, capacitor C 1, C2, resistance R 1, R2, R3, R4; The reception control section comprises, the hyperfrequency receiving circuit that triode T4, inductance L 2 constitute, the signal amplification circuit that operational amplifier IC1 constitutes, the full-wave rectifying circuit that diode D2, D3 constitute, the comparison circuit that operational amplifier IC2 constitutes, the control circuit that the rectifier that triode T5, T6, controllable silicon SD1 and diode D7, D8, D9, D10 form constitutes.
In the hyperfrequency receiving circuit of above-mentioned RF remote-controlled switch, the base bias circuit of triode T4 can be connected to diode D1.
In the comparison circuit of aforesaid RF remote-controlled switch, the IC2 negative input end can be connected to capacitor C 7 over the ground; Between power supply two inputs, can be connected to filter capacitor C11.
Operation principle: the multivibrator that constitutes by triode T1, T2, capacitor C 1, C2, resistance R 1, R2, R3, R4, the about 20KHz of generation frequency, duty ratio are about 0.5 modulating wave, the 200MHz signal that the oscillator that is made of triode T3, inductance L 1, capacitor C 3, C4 in order to modulation produces, the 200MHz signal after modulated is outwards launched by inductance L 1.The hyperfrequency receiving circuit that constitutes by triode T4, inductance L 2, signal with the emission of the radiating portion that receives, demodulation obtains the 20KHz signal, this signal is again through operational amplifier IC1 amplifying circuit, behind the full-wave rectifying circuit that diode D2, D3 constitute, the comparison circuit that send operational amplifier IC2 to constitute.When comparison circuit is received the signal that radiating portion emission comes, export a negative pulse, the bistable circuit upset that triode T5, T6 are constituted, control controllable silicon SD1 triggers or shutoff.Realization is to the switching electric control of electrical appliance.
The access of diode D1 can improve the stability of triode T1.Operational amplifier IC1 negative input end inserts capacitor C 7 over the ground, can improve the anti-interference of output signal; Between power supply two inputs, insert filter capacitor C11, but the clutter that filter out power is brought, the reliable in action of raising device.
Claims (3)
1, a kind of RF remote-controlled switch comprises radiating portion and receives control section; It is characterized in that: radiating portion comprises, the oscillator that is made of triode T3, inductance L 1, capacitor C 3, C4, the multivibrator of the generation modulating wave that is made of triode T1, T2, capacitor C 1, C2, resistance R 1, R2, R3, R4; The reception control section comprises, the hyperfrequency receiving circuit that triode T4, inductance L 2 constitute, the signal amplification circuit that operational amplifier IC1 constitutes, the full-wave rectifying circuit that diode D2, D3 constitute, the comparison circuit that operational amplifier IC2 constitutes, the control circuit that the rectifier that triode T5, T6, controllable silicon SD1 and diode D7, D8, D9, D10 form constitutes.
2, RF remote-controlled switch according to claim 1 is characterized in that: in described hyperfrequency receiving circuit, the base bias circuit of triode T4 is connected to diode D1.
3, RF remote-controlled switch according to claim 1 and 2 is characterized in that: in described comparison circuit, operational amplifier IC2 negative input end is connected to capacitor C 7 over the ground; Between power supply two inputs, be connected to filter capacitor C11.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97207792 CN2294545Y (en) | 1997-03-21 | 1997-03-21 | Radio frequency remote control switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97207792 CN2294545Y (en) | 1997-03-21 | 1997-03-21 | Radio frequency remote control switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2294545Y true CN2294545Y (en) | 1998-10-14 |
Family
ID=33927463
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97207792 Expired - Fee Related CN2294545Y (en) | 1997-03-21 | 1997-03-21 | Radio frequency remote control switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2294545Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104766379A (en) * | 2015-02-11 | 2015-07-08 | 四川蜀路通机电设备安装有限公司 | Radio frequency transceiving system for ETC |
-
1997
- 1997-03-21 CN CN 97207792 patent/CN2294545Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104766379A (en) * | 2015-02-11 | 2015-07-08 | 四川蜀路通机电设备安装有限公司 | Radio frequency transceiving system for ETC |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |