CN2473833Y

CN2473833Y - Telephone remote control electric water heater

Info

Publication number: CN2473833Y
Application number: CN 01219436
Authority: CN
Inventors: 顾乾坤; 周仁山; 蔡晓波
Original assignee: HEFEI RONGSHIDA GROUP CO Ltd
Current assignee: HEFEI RONGSHIDA GROUP CO Ltd
Priority date: 2001-04-11
Filing date: 2001-04-11
Publication date: 2002-01-23
Anticipated expiration: 2011-04-11

Abstract

The utility model relates to an electric water heater controlled through a telephone, comprising a water heater body and a control device, the control device comprises an answering circuit to realize the imitation of answering, bell signals from a telephone line are confirmed by a detection circuit, then a playback circuit is controlled by a single chip micro computer to send out instructions which can use or allow for keying in passwords, then users key in control codes according to operating instruction, the single chip microcomputer implements operation after receiving the keyed in control codes, and automatically hang off after completing the implementation, thus starting to heat and heat preservation of the electric water heater can be controlled through the telephone.

Description

The remote telephone electric heater

The utility model discloses a kind of electric heater with phone control.

At present, electric heater is looked at the parent that advantages such as its cleaning, safety are subjected to the consumer.Yet, electric heater also exists obvious deficiency, be existing electric heater control nothing more than the time be manually control or adopt controller control, therefore, limit by its control mode, existing electric heater such as has only to open electric heater and heat at the user back of entering house, and treating that it can use needs to wait for long heating time that this has just brought numerous inconvenience to use.

The purpose of this utility model provides a kind of phone control electric heater that can control electric heater by the telephonic communication instrument.

For achieving the above object, the technical solution adopted in the utility model is, a kind of phone control electric heater, it comprises water heater body and control device, it is characterized in that: control device comprises circuit for answering, single-chip microcomputer is confirmed behind the incoming call bell signal internal wiring to be connected on the local telephone, realizes the simulation off-hook; Audio record circuit is chosen the different sections of recording in the voice playback integrated circuit by the output control signal of single-chip microcomputer, forms one section voice and is coupled on the telephone wire; Password is preserved circuit and is carried out reading and preserving of password; Ring detecting circuit output is from the bell signal on the telephone wire, and single-chip microcomputer discerns in view of the above whether incoming call is arranged; Double-tone frequently decoding circuit control signal is by the conversation integrated circuit and be translated into binary code and deliver to the P60 of single-chip microcomputer IC1～P64 end frequently with the double-tone sent here on the telephone wire, single-chip microcomputer identifies the password and the control routine of input in view of the above; Temperature measuring circuit is found the temperature of water heater liner water the temperature value of its change in resistance correspondence by single-chip microcomputer after mould/number conversion; Power circuit, provides through full-wave rectification, filtering by the electric main of 220V+and the 12V power supply supplies with the power end of said chip.

As shown from the above technical solution, bell signal from telephone wire circuit is after testing confirmed to send the instruction that can use, allow key feeding cipher by the Single-chip Controlling playback circuit, the user keys in control routine by operation instruction, single-chip microcomputer is executable operations after receiving the control routine of key entry, the back automatic hand-up that is finished carries out remote control thereby finish startup heating to electric heater, insulation etc. by phone.

Description of drawings

Fig. 1 is a theory diagram of the present utility model;

Fig. 2 is circuit theory diagrams of the present utility model.

Below in conjunction with the utility model is described in further detail with embodiment.

Embodiment

Referring to Fig. 1,2, circuit for answering is made up of R14, R25, R37, T3, T4, and behind single-chip microcomputer affirmation incoming call bell signal, P14 puts the peak, and T3 is saturated, the T4 conducting, and internal wiring is connected on the local telephone, realizes the simulation off-hook; Audio record circuit is made up of IC1, IC2, IC6 and peripheral circuit thereof, P77, P76, P20, P71 output control signal by single-chip microcomputer IC1 are chosen the different sections of recording in the IC3 voice playback integrated circuit, form one section voice and be coupled to IC6 by R34, R48, R29,1 pin by IC6 is coupled on the telephone wire again, the other side just can inquire the residing state of electric heater, and sends control command successively; Reading and preserve via the serial communication between P72～P75 of IC1 of described password finished; Ring detecting circuit is made up of R36, O1, C10, D8, R13, and the bell signal on the telephone wire LN is coupled to 1,2 ends of O1 by R13, C10, and 3 ends of optocoupler are exported the P66 pin of a pulse signal to IC1, and whether single-chip microcomputer has incoming call according to this pin state recognition; Electric-leakage detection circuit is made up of L1, D1, D9, C1, IC5, R18, R12, C24, power supply passes through between the L1, when live wire and zero line imbalance, the end ground connection of L1, one AC signal will appear in the other end, and the shaping by IC5 goes out a pulse signal, is coupled to the P10 end of IC1 by R1 5, at this moment single-chip microcomputer is cut off the electricity supply with regard to this interruption of preferential answering; Double-tone decoding circuit frequently is made up of IC2 and peripheral circuit thereof, the double-tone sent here on telephone wire control signal is frequently delivered to the IC2 input by R26 after by IC6 conversation integrated circuit, be translated into binary code by the IC2 internal circuit and deliver to the P60 of single-chip microcomputer IC1～P64 end, single-chip microcomputer identifies the password and the control routine of input in view of the above.

Temperature measuring circuit is made up of A/D (mould/number) change-over circuit of thermistor R20, precision resister R19 and IC1 inside, and it can be found the temperature value of its change in resistance correspondence by single-chip microcomputer with the temperature value of water heater liner water after A/D (mould/number) conversion; Digital display circuit is made up of dibit charactron LED, T1, T2 and R1～R9, is realized the dynamic demonstration of real time temperature and design temperature by the conducting in turn of Single-chip Controlling T1, T2; Relay circuit is made up of relay J N, JC, D2～5 and T7, R17, by the conducting of single-chip microcomputer by control T7 with end thermostatic control and the earth leakage protective that realizes water heater; Buzz circuit is made up of the frequency divider output circuit in buzzer BUZZER, R38, R16, T6, the IC1, and buzzer drives piezo buzzer by the pulse of one 50% duty ratio of P13 output of IC1 by T6; Key in circuit and forms by R21～R23 and ON-OFF, T (+), T (-) triple bond, when pressing by key, the corresponding position control low level of P11, P12, P70, single-chip microcomputer is made operating.

Power circuit is made up of T1, D2-1, D2-4, C2-1, C2-3, U2, C2-2, C2-4, and the 220V electric main is by behind the T1, via D2-1～D2-4 full-wave rectification, the filtering of C2-1, C2-3, provide+the 12V stable electrical,, supply with the power end of IC1～IC5 chip again through the voltage stabilizing of U2.

Claims

1. remote telephone electric heater, it comprises water heater body and remote control, it is characterized in that: remote control comprises circuit for answering, single-chip microcomputer is confirmed behind the incoming call bell signal internal wiring to be connected on the local telephone, realizes the simulation off-hook; Audio record circuit is chosen the different sections of recording in the voice playback integrated circuit by the output control signal of single-chip microcomputer, forms one section voice and is coupled on the telephone wire; Password is preserved circuit and is carried out reading and preserving of password; Ring detecting circuit output is from the bell signal on the telephone wire, and single-chip microcomputer discerns in view of the above whether incoming call is arranged; Double-tone frequently decoding circuit control signal is by the conversation integrated circuit and be translated into binary code and deliver to the P60 of single-chip microcomputer IC1～P64 end frequently with the double-tone sent here on the telephone wire, single-chip microcomputer identifies the password and the control routine of input in view of the above; Temperature measuring circuit is found the temperature of water heater liner water the temperature value of its change in resistance correspondence by single-chip microcomputer after mould/number conversion; Power circuit, provides through full-wave rectification, filtering by the electric main of 220V+and the 12V power supply supplies with the power end of said chip.

2. remote telephone electric heater according to claim 1, it is characterized in that: described audio record circuit is made up of IC1, IC2, IC6 and peripheral circuit thereof, P77, P76, P20, P71 output control signal by single-chip microcomputer IC3 are chosen the different sections of recording in the IC1 voice playback integrated circuit, form one section voice and be coupled to IC6 by R34, R48, R29,1 pin by IC6 is coupled on the telephone wire again; Reading and preserve via the serial communication between P72～P75 of IC1 of described password finished; Ring detecting circuit is made up of R36, O1, C10, D8, R13, and the bell signal on the telephone wire LN is coupled to 1,2 ends of O1 by R13, C10, and 3 ends of optocoupler are exported the P66 pin of a pulse signal to IC1, and whether single-chip microcomputer has incoming call according to this pin state recognition; Double-tone frequently decoding circuit is made up of IC2 and peripheral circuit thereof, and the double-tone of sending here on telephone wire control signal is frequently delivered to the IC2 input by R26 after by IC6 conversation integrated circuit, is translated into binary code by the IC2 internal circuit and delivers to the P60 of single-chip microcomputer IC1～P64 and hold.

3. phone control electric heater according to claim 1 is characterized in that: after the A/D mould/number conversion of temperature measuring circuit by thermistor R20, precision resister R19 and IC1 inside, found the temperature value of its change in resistance correspondence by single-chip microcomputer; Key in circuit and is made up of R21～R23 and ON-OFF, T (+), T (-) triple bond, low level is controlled in the corresponding position of P11, P12, P70.