CN201481127U

CN201481127U - Control circuit of microcomputer multifunctional remote-control automatic electric cooker

Info

Publication number: CN201481127U
Application number: CN2009201938396U
Authority: CN
Inventors: 陈康健; 王荣辉
Original assignee: Guangdong Hotor Electrical Appliance Co Ltd
Current assignee: Guangdong Hotor Electrical Appliance Co Ltd
Priority date: 2009-09-01
Filing date: 2009-09-01
Publication date: 2010-05-26
Anticipated expiration: 2019-09-01

Abstract

The utility model discloses a control circuit of a microcomputer multifunctional remote-control automatic electric cooker. The control circuit comprises a power supply circuit module and an electric cooker switch control module. The power supply circuit module supplies power to the electric cooker switch control module. The utility model is characterized in that the control circuit additionally comprises a telephone remote-control circuit module, the telephone remote-control circuit module is supplied with power by the power supply circuit module, and the telephone remote-control circuit module controls the electric cooker switch control module according to the command information of a telephone; and the telephone remote-control circuit module comprises a single chip microcomputer module, a ringing detection circuit module, a prompt voice circuit module and a DTMF decoding circuit module, the ringing detection circuit module transmits the detected ringing information to the single chip microcomputer module, and the single chip microcomputer module interacts with the telephone through the prompt voice circuit module and the DTMF decoding circuit module. Since the user can remotely control the electric cooker by using the telephone or the mobile phone and the control circuit has timed time setting function and multi-state selection operation function, the utility model has the advantages of more convenient operation and simpler use.

Description

The control circuit of micro computer multifunction remote-control automatic electric rice cooker

Technical field

The utility model relates to a kind of micro computer multifunctional electric cooker, specifically is meant a kind of control circuit of micro computer multifunction remote-control automatic electric rice cooker.

Background technology

Along with the development of society and the progress of science and technology, increasing household electrical appliance have entered people's life, these household electrical appliance bring a lot of convenience for people's life and enjoy, traditional electric cooker, usually adopt the key switch of pushing in the control circuit to control the duty of electric cooker, the electric cooker that does not also have remote control, along with phone the popularizing of family, the function of telephone set will further obtain development and utilization.Utilize phone to realize that household appliance remote control is one of household electrical appliances development in future direction.

The utility model content

The purpose of this utility model is to provide a kind of can use the control circuit of simpler micro computer multifunction remote-control automatic electric rice cooker by phone to the electric cooker straighforward operation and make more convenient operation.

To achieve these goals, the technical solution adopted in the utility model is: the control circuit of micro computer multifunction remote-control automatic electric rice cooker, this control circuit includes power circuit module, electric cooker switch control module, the power circuit module provides power supply for the electric cooker switch control module, it is characterized in that: described control circuit also comprises the remote telephone circuit module, this module provides power supply by the power circuit module, according to the command information of phone the electric cooker switch control module is controlled.

Described remote telephone circuit module includes one-chip computer module, ring detecting circuit module, prompting sound circuit module, DTMF decoding circuit module, described ring detecting circuit module is passed to one-chip computer module with detected ringing information, one-chip computer module record ringing number, after reaching the ringing number of setting, one-chip computer module is undertaken alternately by prompting sound circuit module, DTMF decoding circuit module and phone, and one-chip computer module is also controlled the electric cooker switch control module according to the command information of phone.

The model that described one-chip computer module adopts Shenzhen macrocrystalline science and technology to produce is the STC89C52 chip.

Described ring detecting circuit module includes photoelectrical coupler 2501, and the P3.2 that described photoelectrical coupler 2501 is passed to single-chip microcomputer STC89C52 with signal draws the angle.

The MT8870 chip that the control chip of described DTMF decoding circuit module adopts MITEL company to produce, the DV of described MT8870 chip, D3, D2, D1, D0 draw the angle and are connected with P1.1～P1.5 of single-chip microcomputer STC89C52 successively.

Described prompting sound circuit module includes photoelectrical coupler 2501, TRAN rate adaptor, the low level that described single-chip microcomputer STC89C52 produces is drawn the angle by its P3.2 and is triggered photoelectrical coupler 2501 conductings, and single-chip microcomputer STC89C52 draws the angle by P2.2 the buzzing pulse signal is fed back on the telephone wire through the TRAN rate adaptor.

Described electric cooker switch control module, the electronic switching transistor that includes relay and be connected in series with it, single-chip microcomputer STC89C52 is connected with the base stage of electronic switching transistor.

The beneficial effects of the utility model: the user can utilize the telephone set (landline telephone or mobile phone) of oneself by household telephone wires great distance journey remote control electric cooker.Overcome existing remote control technology and can only push the shortcoming of electric cooker switch key with hand, had the timing set-up function, multimode is selected operating function, and more convenient operation is used simpler advantage.

Description of drawings

The utility model is described in further detail below in conjunction with accompanying drawing.

Fig. 1 is the power supply block diagram of control circuit of the present utility model;

Fig. 2 is an electrical schematic diagram shown in Figure 1.

Among the figure: 1, power circuit module; 2, electric cooker switch control module; 3, remote telephone circuit module; 4, one-chip computer module; 5, ring detecting circuit module; 6, prompting sound circuit module; 7, DTMF decoding circuit module.

The specific embodiment

As shown in Figure 1 and Figure 2, the control circuit of micro computer multifunction remote-control automatic electric rice cooker, control circuit includes power circuit module 1, electric cooker switch control module 2, power circuit module 1 provides power supply for electric cooker switch control module 2, described control circuit also comprises remote telephone circuit module 3, this module 3 provides power supply by power circuit module 1, according to the command information of phone electric cooker switch control module 2 is controlled.Described remote telephone circuit module includes one-chip computer module 4, ring detecting circuit module 5, prompting sound circuit module 6, DTMF decoding circuit module 7, described ring detecting circuit module 5 is passed to one-chip computer module 4 with detected ringing information, one-chip computer module 4 record ringing numbers, after reaching the ringing number of setting, one-chip computer module 4 is undertaken alternately by prompting sound circuit module 6, DTMF decoding circuit module 7 and phone, and one-chip computer module 4 is also controlled electric cooker switch control module 2 according to the command information of phone.The model that described one-chip computer module 4 adopts Shenzhen macrocrystalline science and technology to produce is the STC89C52 chip.

Described ring detecting circuit module 5 includes photoelectrical coupler 2501, and the P3.2 that described photoelectrical coupler 2501 is passed to single-chip microcomputer STC89C52 with signal draws the angle.When the user was called out, telephone exchange was sent ringing signal.Ring is 25 ± 3 volts a sine wave, and humorous bell distortion is not more than 10%, voltage effective value 75 ± 15V.Ring was the cycle with 5 seconds, sent in promptly 1 second, and 4 seconds disconnected.When phone was squeezed into, the number of times of ring was judged by system, reach predetermined times for example ten times the time phone still do not have off-hook then system with automatic off-hook.The Ring-down count method is: the P3.2 pin that telephone ring signal is input to single-chip microcomputer STC89C52 by photoelectrical coupler 2501, phone is heard the ring the tinkle of bells 1 time, the general 20 primary current ripples that produce of photoelectrical coupler, single-chip microcomputer STC89C52 counts the variation of this pin level.If the user does not also have off-hook after the continuous ringing 10 times, then be automatically brought to electric cooker control, single-chip microcomputer STC89C52 set P3.2 pin is realized the automatic off-hook function; If in these 10 ring processes, owner has connected phone, and then controller does not respond, and makes controller and phone not interfere with each other like this.Single-chip microcomputer STC89C52 detects the touch-tone signal of DTMF decoding output behind the off-hook, to read the remote information that the user sends, realizes remote control function.

The MT8870 chip that the control chip of described DTMF decoding circuit module 7 adopts MITEL company to produce, the DV of described MT8870 chip, D3, D2, D1, D0 draw the angle and are connected with P1.1～P1.5 of single-chip microcomputer STC89C52 successively.The MT8870 signal receiver can become the binary digital signal that single-chip microcomputer STC89C52 can discern to DTMF number, discerns each button.When input password on the keyboard of user at telephone set or after pressing control button, these information all adopt double-tone frequency mode to send by telephone wire.The main effect of DTMF decoding circuit is to receive from the touch-tone signal of telephone wire TEL0, TEL1 input and convert thereof into binary coding, transports to single-chip microcomputer then and carries out data and handle, and then realize the control function.

Described prompting sound circuit module 6 includes photoelectrical coupler 2501, TRAN rate adaptor, the low level that described single-chip microcomputer STC89C52 produces is drawn the angle by its P3.2 and is triggered photoelectrical coupler 2501 conductings, and single-chip microcomputer STC89C52 draws the angle by P2.2 the buzzing pulse signal is fed back on the telephone wire through the TRAN rate adaptor.To the user feedback prompting is that telephone remote is controlled very important part, and circuit exchanges with the operator by prompt tone.For example: the user does not also have off-hook after continuous ringing 10 times, and system is automatically brought to electric cooker control, and at this moment prompting sound circuit can send the buzzing prompt tone of different sounds to subscriber phone, thereby carries out next step operation to user feedback.

Described electric cooker switch control module 2, the electronic switching transistor that includes relay and be connected in series with it, single-chip microcomputer STC89C52 is connected with the base stage of electronic switching transistor.Single-chip microcomputer STC89C52 is to the base stage of electronic switching transistor output high level or low level, with the conducting of control electronic switching transistor or close, with the action of control relay, thereby the duty of electric rice cooker controlled.

Operation principle: when phone is squeezed into, the ring detecting circuit module detects telephone ring signal, and behind the ringing number of waiting system acquiescence, single-chip microcomputer starts automatic take offing machine circuit and realizes off-hook, and send the prompt tone signal by the prompting sound circuit module, the user inputs predefined password, and single-chip microcomputer reads the input password by the DTMF decoding circuit, compares checking with the password that is preset in the single-chip microcomputer, if password mistake, system's automatic hand-up, password is correct, then enters state of a control.Single-chip microcomputer obtains the order that the user sends by DTMF decoding circuit module, and according to operations such as user's command execution start, shutdown, timings.When the people answered the call before the ringing number of acquiescence, do not enter the phone state of a control, therefore do not influence the normal use of phone.

Claims

1. the control circuit of a micro computer multifunction remote-control automatic electric rice cooker, this control circuit includes power circuit module (1), electric cooker switch control module (2), power circuit module (1) provides power supply for electric cooker switch control module (2), it is characterized in that: described control circuit also comprises remote telephone circuit module (3), this module (3) provides power supply by power circuit module (1), according to the command information of phone electric cooker switch control module (2) is controlled.

2. the control circuit of micro computer multifunction remote-control automatic electric rice cooker according to claim 1, it is characterized in that: described remote telephone circuit module includes one-chip computer module (4), ring detecting circuit module (5), prompting sound circuit module (6), DTMF decoding circuit module (7), described ring detecting circuit module (5) is passed to one-chip computer module (4) with detected ringing information, one-chip computer module (4) record ringing number, after reaching the ringing number of setting, one-chip computer module (4) is by prompting sound circuit module (6), DTMF decoding circuit module (7) and phone carry out alternately, and one-chip computer module (4) is also controlled electric cooker switch control module (2) according to the command information of phone.

3. the control circuit of micro computer multifunction remote-control automatic electric rice cooker according to claim 2 is characterized in that: the model that described one-chip computer module (4) adopts Shenzhen macrocrystalline science and technology to produce is the STC89C52 chip.

4. the control circuit of micro computer multifunction remote-control automatic electric rice cooker according to claim 2, it is characterized in that: described ring detecting circuit module (5) includes photoelectrical coupler 2501, and the P3.2 that described photoelectrical coupler 2501 is passed to single-chip microcomputer STC89C52 with signal draws the angle.

5. the control circuit of micro computer multifunction remote-control automatic electric rice cooker according to claim 2, it is characterized in that: the MT8870 chip that the control chip of described DTMF decoding circuit module (7) adopts MITEL company to produce, the DV of described MT8870 chip, D3, D2, D1, D0 draw the angle and are connected with P1.1～P1.5 of single-chip microcomputer STC89C52 successively.

6. the control circuit of micro computer multifunction remote-control automatic electric rice cooker according to claim 2, it is characterized in that: described prompting sound circuit module (6) includes photoelectrical coupler 2501, TRAN rate adaptor, the low level that described single-chip microcomputer STC89C52 produces is drawn the angle by its P3.2 and is triggered photoelectrical coupler 2501 conductings, and single-chip microcomputer STC89C52 draws the angle by P2.2 the buzzing pulse signal is fed back on the telephone wire through the TRAN rate adaptor.

7. the control circuit of micro computer multifunction remote-control automatic electric rice cooker according to claim 1 and 2, it is characterized in that: described electric cooker switch control module (2), the electronic switching transistor that includes relay and be connected in series with it, single-chip microcomputer STC89C52 is connected with the base stage of electronic switching transistor.