CN2580684Y

CN2580684Y - Long-distance control switch

Info

Publication number: CN2580684Y
Application number: CN 02258688
Authority: CN
Inventors: 蔡声正; 洪松荣
Original assignee: FUJIAN WANCHENG DIGITAL CO LTD
Current assignee: FUJIAN WANCHENG DIGITAL CO LTD
Priority date: 2002-11-19
Filing date: 2002-11-19
Publication date: 2003-10-15
Anticipated expiration: 2012-11-19

Abstract

The utility model discloses a long-distance control switch, which is mainly composed of an infrared emission circuit, an infrared reception circuit, an off-hook circuit, a DTMF decoding circuit, an MCU, a ringing detection circuit, an instruction input circuit and an operation indication circuit, wherein, the ringing detection circuit is connected to a public telephone network, a ringing signal is taken out, the conversion is carried out, and the ringing signal is delivered to the MCU. The off-hook circuit stimulates the off-hook operation under the control of the MCU, the DTMF decoding circuit carries out decoding to a dual-tone multifrequency signal on a telephone wire, and the decoded signal is input in the MCU. The utility model realizes the long-distance real-time control to various electric devices through the telephone network, the infrared emission circuit and the infrared reception circuit and has the advantages of long remote control distance, reliable control, wide control range, easy use, etc. Long-distance remote control can be realized as long as the utility model is within the coverage range of the telephone network.

Description

Remote control switch

Technical field

The utility model relates to a kind of remote control, particularly relates to a kind of remote control switch.

Background technology

At present, in the medium-long range telecontrol engineering of known variety of way, mostly there are shortcomings such as complex structure, poor reliability, transmission line signals loss are big,, more exist wiring numerous and diverse, perhaps shortcoming such as circuit repetition rate height if need control to a plurality of equipment.A kind of known remote control switch (as shown in Figure 1) that utilizes telephone network to realize Remote, it is made up of instruction device 1, command receiver 2, carrier wave encoder 3, carrier decoder 4 and electronic switch 5.Instruction device 1 is the DTMF dual-tone multifrequency terminal phone of public telephone network, comprise landline telephone and mobile phone, command receiver 2 is attempted by on the phone inlet wire, it receives the digital signal that instruction device 1 sends, control the carrier wave encoder after treatment and be bonded to power line by instruction transmission carrier signal and lotus root, carrier decoder 4 is attempted by carrier wave encoder 3 and is on the interior electric power inlet wire of same power transformer output area, the digital signal that its reception carrier encoder 3 sends drives corresponding electronic switch 5 after treatment.

Summary of the invention

The purpose of this utility model is to provide a kind of remote control switch that multiple electric equipment is carried out remote live control by telephone network.

For achieving the above object, solution of the present utility model is:

The utility model remote control switch is mainly by infrared emission circuit and infrared receiving circuit, and circuit for answering, DTMF decoding circuit, MCU, ring detecting circuit, instruction input circuit and working indicating are formed.It is online that the bell testing circuit is connected public telephone, and the taking-up bell signal is also changed, and is sent to MCU; Circuit for answering is simulated off-hook under the control of MCU; The DTMF decoding circuit is decoded to the touch-tone signal on the telephone wire, and with decoded signal input MCU; The instruction input circuit is set the running parameter of MCU; The infrared receiving circuit that is used for to the infrared emission circuit of controlled electric appliance emission remote control command and is used to be provided with the controlled electric appliance remote control command is connected electrically in MCU, accepts the control of MCU.

Described DTMF decoding circuit is decoded to the touch-tone signal on the telephone wire, and gives MCU with 4 bits consistent with control routine.

The utility model also comprises speech processing module output language signal under the control of MCU.

The utility model also comprises the working indicating that connects on the MCU, and it is presented at the operating state of MCU on the display panel.

The utility model is realized multiple electric equipment is carried out remote live control by telephone network, infrared emission and receiving circuit, it is long to have remote control distance, control is reliable, control range is wide and use advantages such as simple, as long as in the scope that telephone network covers, all can realize Remote.

Below in conjunction with the drawings and specific embodiments the utility model is further described.

Description of drawings

Fig. 1 is the theory structure block diagram of known Remote switch;

Fig. 2 is the utility model theory structure block diagram;

Fig. 3 is the utility model circuit diagram;

Fig. 4 is the utility model operational flowchart.

Embodiment

As shown in Figure 2, the utility model remote control switch mainly is made up of infrared emission circuit 1, infrared receiving circuit 2, circuit for answering 3, DTMF decoding circuit 4, MCU5, ring detecting circuit 6, instruction input circuit 7, speech processing module 8 and working indicating 9.

1) ring detecting circuit 6, and it is online to be connected public telephone, the bell signal that inserts by telephone wire, by photoelectrical coupler and around components and parts take out bell signal, be sent to MCU5, start MCU5 work

2) circuit for answering 3, and after MCU5 detected ringing number and reaches the value that sets, MCU5 sent a control signal Telectrl to R17, by triode 2N5551,2N5401, makes circuit be in off hook state.

3) the DTMF decoding circuit 4, and the control signal Telectrl of MCU5 output is sent to R13 simultaneously, and by Q5, C utmost point output low level is sent to the 6th pin of decoding chip U4, makes chip U4 in running order.The signal of DTMF by phone input, be sent to the 2nd, 3 pin of decoding chip U4 through capacitor C 3, R1, R2, after decoding, MCU5 sends the 10th pin that control signal Out-en is sent to decoding chip U4, guarantees that effective output of signal D0-D3 is sent to MCU5.

4) the infrared emission circuit 1, and the command signal that will export start or shutdown when the 8th pin of MCU5 by Q1, makes transmitting tube emission start or shutdown command when being sent to R15.Instruction input circuit 7 by button S2 is set, makes the LED end be in high level, the control instruction is shaken in the start of remote controller be sent to infrared remote receiver, by Q3, is sent to the MCU5 from C utmost point output signal; By button S2 once is set, make the LED end be in low level again, the control instruction is shaken in the remote controller shutdown be sent to infrared remote receiver,, send into the MCU5 from C utmost point output signal by Q3.By shaking control button S1, the 8th pin of MCU5 will be exported start/off signal repeatedly and be sent to infrared emission circuit 1.

5) MCU5, after inserting bell signal, after MCU5 detected bell signal and is set point, output control signal Telectrl was sent to R17, R13, allows circuit be in off hook state.The control signal of MCU5 output simultaneously Ctrlplay is sent to the 16th pin of speech chip U3, and signal D0-D3 is sent to speech chip U3, the control voice output.

The output signal that detects decoding chip U4 as MCU5 is for shaking control signal (start or shutdown), and the 8th pin will be exported corresponding start or the shutdown command signal is sent to infrared emission circuit 1, simultaneously other signal will be sent to speech chip U3 control voice output.

6) speech processing module 8, and after the output signal Ctrlplay of MCU5 and D0-D3 were sent to speech chip U3, the 7th pin output voice signal of speech chip U3 was sent to Q4, amplifies output.

7) working indicating 9, by button is set, make the LED end be in high level, and relay indicating light D8 (green light) shows; By button is set, make the LED end be in low level, relay indicating light D7 (red light) shows.(after green light/red light showed, if do not carry out other operation, then green/red light extinguished after will showing a period of time automatically; If continuously again by button once is set, then green/red light extinguishes) when infrared radiating circuit 1 was launched start-up command, then green light was glittering; When emission during shutdown command, red lamp flass then.

Operation principle of the present utility model:

It is online that ring detecting circuit 6 is connected public telephone, start MCU5 work reach the number of times of setting at ringing number after, circuit for answering 3 is simulated off-hooks simultaneously, touch-tone signal on 4 pairs of telephone wires of DTMF decoding circuit is decoded, and gives MCU5 with the tetrad consistent with control routine; Instruction input circuit 7 is set the running parameter of MCU5; Speech processing module 8 is the output language signal under the control of MCU5; Working indicating 9 connects MCU5, and the operating state of MCU5 is presented on the display panel.Described control switch 1 is that infrared emission circuit 11 and infrared receiving circuit 12 formed, and is used for to the infrared emission circuit 11 of controlled electric appliance emission remote control command and the infrared receiving circuit 12 that is used to be provided with controlled electric appliance is connected electrically in MCU5, accepts the control of MCU5.

Claims

1, a kind of remote control switch is characterized in that: it is mainly by infrared emission circuit and infrared receiving circuit, and circuit for answering, DTMF decoding circuit, MCU, ring detecting circuit, instruction input circuit and working indicating are formed; It is online that ring detecting circuit is connected public telephone, and the taking-up bell signal is also changed, and is sent to MCU; Circuit for answering is simulated off-hook under the control of MCU; The DTMF decoding circuit is decoded to the touch-tone signal on the telephone wire, and with decoded signal input MCU; The instruction input circuit is set the running parameter of MCU; The infrared receiving circuit that is used for to the infrared emission circuit of controlled electric appliance emission remote control command and is used to be provided with the controlled electric appliance remote control command is connected electrically in MCU, accepts the control of MCU.

2, remote control switch according to claim 1 is characterized in that: described DTMF decoding circuit is decoded to the touch-tone signal on the telephone wire, and gives MCU with the tetrad consistent with control routine.

3, remote control switch according to claim 1 is characterized in that: it also comprises speech processing module output language signal under the control of MCU.

4, remote control switch according to claim 1 is characterized in that: it also comprises the working indicating that connects on the MCU, and it is presented at the operating state of MCU on the display panel.