CN2728119Y - Remote controller for telephone - Google Patents
Remote controller for telephone Download PDFInfo
- Publication number
- CN2728119Y CN2728119Y CN 200420082788 CN200420082788U CN2728119Y CN 2728119 Y CN2728119 Y CN 2728119Y CN 200420082788 CN200420082788 CN 200420082788 CN 200420082788 U CN200420082788 U CN 200420082788U CN 2728119 Y CN2728119 Y CN 2728119Y
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- Prior art keywords
- circuit
- remote control
- utility
- cpu
- model
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- Expired - Fee Related
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Abstract
The utility model relates to a remote controller for a telephone, which comprises a telecommunication line, a ringing testing circuit, a demoding circuit, and a voice circuit. The utility model is characterized in that the utility model adopts an RS485 interface; the input interface circuit of the telecommunication line is isolated by a high-frequency transformer; a relay is used as an offhooking switch; the line is connected with the ringing testing circuit in parallel, and the line is isolated by an optical coupling; the utility model is provided with a code sending circuit whose one end is connected with a CPU serial signal, and the other end is connected with an amplifier. The utility model has the advantages that the utility model ensures reliable receiving and sending of the DTMF signal, carrying out data communication with a remote computer, and sending code and dialing for call automatically.
Description
Technical field
The utility model relates to a kind of telephone remote control, relate in particular to a kind of synthetic telephone remote control of modulation/RS485 switching controller that carries out the straighforward operation air-conditioning and carry out the transmission of DTMF data double-way by telephone line by phone, be particularly suitable for that the merchant lives, villa, also can be connected to estate management control centre to whole residential quarters.
Background technology
Along with science is more and more flourishing, carry out the straighforward operation air-conditioning and household electrical appliance have become the fact with phone, publication number is that 99106585.9 patent No.s are 02253932.8 utility model patent: the air-conditioner voice phone supervising device is this product, as shown in Figure 1, it is transferred to command adapted thereto by decoding after being accepted by telephone remote control by the button generation by the dtmf signal of dual-tone dialing telephone set or digital mobile phone to handle laggard line operate by CPU, CPU and output order are given sound circuit, send the audio signal that is recorded in sound circuit in advance by sound circuit and carry out the corresponding state transmission to phone, to reach the human-machine conversation control air-conditioning, the purpose of household electrical appliance etc., but because dtmf signal is isolated, the earth potential of the earth potential of telecommunication line and telephone remote control CPU altogether, at different telecommunication lines is under the different situation of voltage, has the dtmf signal distortion and causes malfunctioning; And function singleness, the dtmf signal that can only produce by the button of dual-tone dialing telephone set sends instruction, and the personnel selection ear is accepted voice signal.Can not communicate with computer, can not realize initiatively signaling dial-up, with the voice mode warning function.
Summary of the invention
The purpose of this utility model be a kind of reliable reception that guarantees dtmf signal of invention with transmission, can be directly and the remote computer telephone remote control that carries out data communication, the dial-up of energy active signaling.
For realizing above purpose, the technical solution of the utility model provides a kind of telephone remote control, and it comprises a telecommunication line, ring detecting circuit, decoding circuit, sound circuit, it is characterized in that, adopts the RS485 interface; Described telecommunication line input interface circuit is isolated with high frequency transformer, and with relay as the off-hook switch, ring detecting circuit in parallel on the circuit, and use light-coupled isolation; Be equipped with a signaling circuit, described signaling circuit one end is connected with the serial signal of CPU, and the other end is connected with amplifier.
The utility model adopts the audio frequency isolating transformer that the circuit input is isolated with cpu circuit, it is 1/2VCC that cpu power VCC is biased voltage by the resistance pair amplifier, without any influence, it is malfunctioning not cause that distortion causes to dtmf signal for the height of telecommunication line common-battery voltage like this.
The telecommunication line input interface circuit is isolated with high frequency transformer, and with relay as the off-hook switch, ring detecting circuit in parallel on the circuit, and use light-coupled isolation, the mixed signal of direct current common-battery voltage on the telecommunication line and DTMF is after isolating like this, filtering DC component, have only to exchange dtmf signal and input to decoding circuit, the voltage height of telecommunication line to decoding circuit without any influence.Amplifying circuit to voice adopts independent power supply VCC, and the 1/2VCC bias voltage is set, and voice exchanging high-frequency signal by the transformer coupled telecommunication line that arrives, make people's ear hear the voice suggestion sound of high-fidelity after amplifying.
The utility model increases a signaling circuit, the data transaction that needs is sent by CPU becomes the key set code (0～9, #, *) of telecommunication standard to give the signaling circuit, the signaling circuit converts key set code to dtmf signal and gives amplifying circuit through capacitive coupling, and through the transformer coupled telecommunication line that arrives, described like this telephone remote control just can be realized the modulation function of DTMF/RS485, can realize directly carrying out data with computer, communicates by letter and can realize initiatively signaling dial feature.
The utility model has the advantages that;
1. can guarantee the reliable reception and the transmission of dtmf signal;
2. synthetic carry out the function of modulation/RS485 signal converting that the DTMF data double-way transmits by telephone line, make this telephone remote control again can be directly and remote computer carry out data communication.
3. initiatively signaling dialing makes controlled device initiatively signaling dial-up when breaking down, and reports to the police with voice mode.
Description of drawings
Fig. 1 is an original call remote control circuitry block diagram representation;
Fig. 2 is the utility model circuit block diagram schematic diagram;
Fig. 3 is the utility model circuit theory diagrams;
Fig. 4 is the connection layout of the utility model and computer long distance communication.
Embodiment
The utility model is described in further detail below in conjunction with drawings and Examples.
Shown in Fig. 2,3, be the utility model circuit block diagram schematic diagram and circuit theory diagrams, CN4 is the circuit-line input; CN1 is telephone set and interface; S1 is a switch, can manually carry out and the suiting of circuit; C1, D1 transfer digital signal for detecting ringing waveform to after U4 isolates, handle for the CPU metering and use; T1 is an isolating transformer, and the dtmf signal of telecommunication line is coupled effective alternating current component and amplifies the back to decoding circuit U2, signaling circuit U 1, language circuit U 3 through Q4 and arrive outside telecommunication line by transformer coupled after transformer isolation; J1 is an offhooking relay, and as bell signal counting back or need initiatively to dial and cry when reporting to the police, CPU drives J1 and carries out off-hook, and when off-hook, relay is connected, and it is direct and connect to be equivalent to elementary dc impedance 200 Ω of isolating transformer.
Described signaling circuit U 1 is encoded the serial signal of CPU, and in the dtmf signal mode after C12 coupling Q4 amplifies, send to outside telecommunication line.
Described decoding circuit U2 decodes through C19 the telecommunications dtmf signal after straight, decoded telecommunications key set code is transferred to digital signal for the CPU analyzing and processing.
Described sound circuit U3, the digital signal instruction according to CPU sends the voice that each section recorded in advance respectively, after C18 coupling Q4 amplifies, sends to outside telecommunication line.
Described U10 is the RS485 drive circuit, is the interface circuit of data passes between CPU and controlling object.
Embodiment 1: operate the central air-conditioning unit with phone
General external call is squeezed into, and after the ring 5 times (can set 1～9 time), telephone remote control is replied, and uses voice prompt operation.If one one of party-line connects, then telephone remote control does not response.Process is: " you are good, and the computer person on duty please input password ", → correct ", revising setting " by 2 by 1 operating air conditioner, → " asking the input operation instruction ", → " your instruction is accepted, and thanks use to ask on-hook ".As the password input error, then " your input error thanks use to ask on-hook in prompting.”
Example: " pressing 1 operating air conditioner " → " asking the input operation instruction " → input 0～16 (room number, 0 is whole rooms)+#+1 or 2 (start shooting or shut down) is for opening or closing air-conditioning.If above numerical value is set correct, verbal cue " your instruction is accepted, thanks use to ask on-hook ".If also think to operate, please by " 1 ", the language indication " is asked the input operation instruction " again.
Embodiment 2: after the central air-conditioning fault, and active dialing alarm process
The machine group number of all forming when each telephone remote control dispatches from the factory by one 6 figure place, when in a single day this unit breaks down, telephone remote control can be automatically by the predefined repair call of user, the maintenance telephone that is generally the air-conditioning manufacturer is called out, after maintenance department answers, telephone remote control with voice mode report to the police " * * * * * * number unit takes place * * number fault, he please overhauls ".After maintenance department hears prompting, can contrast " the fault code name table of comparisons " easily and learn what fault has taken place certain unit, and with reasonable approach air-conditioning be keeped in repair in the fastest mode.
Embodiment 3: computer remote is monitored in real time
As shown in Figure 4, connection layout for the utility model and computer long distance communication, the air-conditioning unit is connected with telephone line 2, communication data adapter 3 and computer 4 by telephone remote control 1, computer 4 becomes DTMF mode called telephone remote controller 1 to instruction transformation by communication network, play voice behind telephone remote control 1 off-hook, process is: " you are good, and the computer person on duty please input password ", → computer 4 sends data communication instruction in the DTMF mode.Telephone remote control 1 changes in the DTMF mode and transmits data, so just can be anywhere to the air-conditioning unit control in real time, remote debugging and maintenance, improved automaticity, and can in time find the unit fault, carry out remote analysis, judgement, improve the quality of air-conditioning unit after-sale service and reduce maintenance cost and the raising reliability.
Claims (5)
1. telephone remote control, it comprises a telecommunication line, ring detecting circuit, decoding circuit, sound circuit, it is characterized in that, adopts the RS485 interface; Described telecommunication line input interface circuit is isolated with high frequency transformer T, and with relay S as the off-hook switch, ring detecting circuit in parallel on the circuit, and isolate with optocoupler U4; Be provided with a signaling circuit U 1, described signaling circuit U 1 one ends are connected with the serial signal of CPU, and the other end is connected with amplifier Q4.
2. telephone remote control according to claim 1 is characterized in that, described signaling circuit U 1 is encoded the serial signal of CPU, and in the dtmf signal mode after C12 coupling Q4 amplifies, send to outside telecommunication line.
3. telephone remote control according to claim 1 is characterized in that, described decoding circuit U2 decodes through C19 the telecommunications dtmf signal after straight, decoded telecommunications key set code is transferred to digital signal for the CPU analyzing and processing.
4. telephone remote control according to claim 1 is characterized in that, described sound circuit U3, and the digital signal instruction according to CPU sends the voice that each section recorded in advance respectively, after C18 coupling Q4 amplifies, sends to outside telecommunication line.
5. telephone remote control according to claim 1 is characterized in that described U10 is the RS485 drive circuit, is the interface circuit of data passes between CPU and controlling object.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420082788 CN2728119Y (en) | 2004-09-13 | 2004-09-13 | Remote controller for telephone |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200420082788 CN2728119Y (en) | 2004-09-13 | 2004-09-13 | Remote controller for telephone |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2728119Y true CN2728119Y (en) | 2005-09-21 |
Family
ID=35044123
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200420082788 Expired - Fee Related CN2728119Y (en) | 2004-09-13 | 2004-09-13 | Remote controller for telephone |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2728119Y (en) |
-
2004
- 2004-09-13 CN CN 200420082788 patent/CN2728119Y/en not_active Expired - Fee Related
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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 |