CN201079285Y - Safety prompting device for kettle - Google Patents
Safety prompting device for kettle Download PDFInfo
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- CN201079285Y CN201079285Y CNU2007200408726U CN200720040872U CN201079285Y CN 201079285 Y CN201079285 Y CN 201079285Y CN U2007200408726 U CNU2007200408726 U CN U2007200408726U CN 200720040872 U CN200720040872 U CN 200720040872U CN 201079285 Y CN201079285 Y CN 201079285Y
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Abstract
The utility model relates to a kettle which can indicate that water is boiled in prompt and apparent way. The kettle comprises an emitter and a receiver; wherein, the emitter comprises a coding chip U2, the output end of which is also connected with a modulation circuit and an emitting circuit. The emitting circuit is connected with an emitting antenna for emitting signals. Through an antenna, the receiver in the utility model can receive high-frequency signals emitted from the emitter, and then the antenna can match, demodulate and reshape the high-frequency signals to output coding signals. The decoding signals of a decoding ship (U4) can be outputted to one or more circuits of a music circuit, a flashing circuit and a vibrating circuit. The produce can provide wonderful warning music, as well as flashing and vibrating indications.
Description
Technical field
The utility model relates to electric cooker apparatus in the daily life, is particularly suitable for the kettle that the amentia personnel use.
Technical background
Traditional electric kettle or combustion gas kettle after water is opened based on auditory tone cues, for the dysaudia personage, such as the old man of deaf person, hearing decay etc. and be in personage in the environment that noise is big or soundproof effect is stronger, the purposes of traditional alert kettle can be restricted, because water is opened and can not be pointed out timely, therefore the consequence that causes is catastrophic often.
Technology contents
The purpose of this utility model just provide a kind of water by can be in time after boiled, the obvious kettle of prompting.
For achieving the above object, the technical solution adopted in the utility model is: a kind of safety instruction device of kettle is characterized in that: device comprises transmitter and receiver, wherein,
Transmitter comprises coding chip U2, be connected with temperature sensing tube switch U1 between the power input of coding chip U2 and the battery BT1, be connected with oscillating circuit on the coding chip U2, the output of coding chip U2 also is connected with modulation circuit and radiating circuit, is connected with the transmission antennas transmit signal on the radiating circuit;
Receiver receives the high-frequency signal that transmitter sends by antenna, through antenna match, demodulation, shaping outupt coded signal, input decoding chip U4 decoding, the decoded signal of decoding chip U4 outputs in one or more circuit in music circuit, flash lamp circuit and the vibrating circuit, and music circuit, flash lamp circuit and vibrating circuit provide prompting to report to the police.
This product can provide the euphony prompting, and flash of light and vibration prompt can also be provided, and adopts radio communication.The flash of light prompting has very big applicability, and generally speaking, as long as eyes have light sensation, the user just can experience the flicker of flash lamp, thereby reaches the purpose of prompting; The user is in time notified in prompting when vibration prompt can be used for sleeping; Communication makes that use is convenient.
Description of drawings
Fig. 1 is a theory diagram of the present utility model;
Fig. 2 is the theory diagram of transmitter;
Fig. 3 is the theory diagram of receiver;
Fig. 4 is the theory diagram of wireless vibration device;
Fig. 5 is the theory diagram of wired vibrator block diagram;
Fig. 6 is the circuit theory diagrams of transmitter;
Fig. 7 be receiver circuit theory always scheme; Fig. 7-the 1st, the circuit theory diagrams of the power supply of receiver and power supply indication; Fig. 7-the 2nd, the antenna match of receiver receives the schematic diagram of modulation and amplifying circuit; Fig. 7-the 3rd, the decoding circuit schematic diagram of receiver; Fig. 7-the 4th, the function selector circuit schematic diagram of receiver; Fig. 7-the 5th, 555 delay circuit schematic diagrams of receiver; Fig. 7-the 6th, the flash lamp circuit schematic diagram; Fig. 7-the 7th, the music circuit schematic diagram; Fig. 7-the 8th, the plug receptacle circuit theory diagrams;
Fig. 8 is the circuit theory diagrams of wired vibrator;
Fig. 9-the 1st, the antenna match of wireless vibration device receives modulation and amplifying circuit schematic diagram; Fig. 9-the 2nd, the decoding circuit schematic diagram of wireless vibration device; Fig. 9-the 3rd, time-delay vibrating circuit schematic diagram.
The specific embodiment
The safety instruction device of the kettle of the utility model design is made up of transmitter, receiver, vibrator three parts, describes below in conjunction with figure.
Transmitter: 12V powered battery, the transmitter radiation pattern is emission continuously, tranmitting frequency is 315MHz, for avoiding the same frequency false triggering, portion is added with coding chip PT2622 (address code and numeric data code) within it, and same receiver has the decoding chip PT2272 with its pairing, have only two chips coding identical, decoding chip just can be exported useful signal, otherwise does not export useful signal.Connect transmitter power when temperature sensing tube reaches design temperature, transmitter is started working, coding chip PT2262 output-string encoding data, these data are through the 315MHz frequency modulation(PFM), be modulated into high-frequency signal, last high-frequency signal is sent by antenna, shown in Fig. 1,2 and 6.
Receiver: mains-supplied, have attaching plug, directly connect alternating current 220V socket (plate).Receiver has four kinds of working methods such as flash of light, music, flash of light+music, no any operation, and four kinds of modes are selected by toggle switch.And bottom doorbell, be added with
3.5mm jack, be used to connect wired vibrator, vibrator and flash lamp are worked simultaneously.If add the wireless vibration device, vibrator and receiver are worked simultaneously.Receiver receives the 315MHz high-frequency signal that transmitter sends by antenna, through antenna match, demodulation, shaping outupt coded signal, sends into decoding chip PT2272 decoding output again, and the signal of output is selected control function (four kinds of working methods) through selector switch.The realization of flash function: decoded output signal triggers 555 delay circuits, 555 time delayed signals divide two-way to drive: one road driving switch pipe make the actuating of relay and in delay time hold mode, to connect the flash lamp circuit power supply, make flash lamp work, time-delay finishes, and flash lamp quits work; Another road is passed through
3.5mm jack drive wired vibrator.The realization of music function: decoded output signal directly triggers the Music Clip trigger end, makes the musical film sounding.Referring to Fig. 1,3,7.
Vibrator: vibrator is divided into wired vibrator and wireless vibration device, referring to Fig. 4,5.When needing, wired vibrator passes through
3.5mm two core plugs patch in the jack of receiver, in case 555 time delayed signal is arranged, drive the vibrator internal relay at once, connect the vibrating motor power supply, vibrator works, time-delay finishes, and quits work.Wireless vibration device inside has wireless receiving circuit, wireless receiving circuit uses monolithic integrated chip MICRF002, directly finish reception, demodulation to launcher signal, the signal of output is sent into decoding chip PT2272 decoding output and is triggered 555 delay circuits, 555 time delayed signals drive the vibrator internal relay, connect the vibrating motor power supply, vibrator works, time-delay finishes, and quits work.
Wireless transmission distance can reach 300m farthest; The flash of light prompting is eye-catching, timely; When being used for rest, vibration reminds; Music tip is a ding-dong sound.Transmitter is launched once, and 8～10 scintillation times of the flash lamp of receiver flicker are 5.5 seconds, and sound is 3 ding-dong sound, and the vibrator time of vibration is 5.5 seconds.
Below in conjunction with accompanying drawing circuit connection of the present utility model and operation principle are elaborated.
Comprise power supply and control circuit in the transmitter, as shown in Figure 6, the positive pole of battery BT1 connects the end of temperature sensing tube U1, and temperature sensing tube U 1 other end connects 18 pin of coding chip U2.
When water is boiled, be positioned at temperature sensing tube U 1 action of pot lid top, temperature sensing tube U1 is a TEMP formula switch connection transmitter power, and transmitter is transmitted to receiver, the prompting user.Use 85 ℃ temperature sensing tube U1 and need not 100 ℃, be because the water in the dried up kettle of pot lid has certain distance, and the influence of ambient temperature, temperature sensing tube U1 can not reach 100 ℃.Through verification experimental verification, 85 ℃ of temperature sensing tubes are done the time spent, and the water in the kettle just seethes with excitement.
Transmitter comprises coding circuit, and as shown in Figure 6,18 pin of coding chip U2 (PT2262) connect temperature sensing tube, and 9 pin are connected battery BT1 negative pole with 14 pin, and 15,16 pin parallel oscillation resistance R, 2,17 pin connect current-limiting resistance R1.
Coding chip is selected eight bit address sign indicating numbers for use, and (PT2262 of A0～A7), each coded address connects power supply, ground connection, unsettled three kinds of states, so this coding chip can be compiled 3 the individual not duplication code of 8 powers (6561).Have only the PT2272 address code of receiving terminal identical with it, could match use.
During work, 14 pin connect low level, and 15,16 pin connect oscillation resistance, the determination data frequency of oscillation, and 17 pin outputting encoded datas, data mode are the high-low level combination.
Transmitter comprises modulation circuit and radiating circuit, and as shown in Figure 6, inductance L 1 one ends connect 18 pin of coding chip U2, and the other end connects 1 pin of capacitor C 3 and inductance L 2 and crystal oscillator Y1.The other end of capacitor C 3 connects the emitter stage of triode Q1 and the colelctor electrode of Q2.Inductance L 2 other ends connect colelctor electrode and the coupling capacitance C2 of triode Q1.The base stage of triode Q1 connects 2 pin of crystal oscillator Y1, and the base stage serial connection current-limiting resistance R1 of triode Q2 is to 17 pin of coding chip U2, and the emitting stage of Q2 connects the negative pole of battery BT1.The 3 pin ground connection of crystal oscillator Y1,1,3 pin shunt capacitance C1,1,2 pin parallel resistance R3.Antenna is penetrated in the other end sending and receiving of coupling capacitance C2.
As shown in Figure 6, when 17 pin of coding chip are exported high level, drive triode Q2 through current-limiting resistance R1 (33K), make the oscillating circuit work of forming by 315MHz crystal oscillator Y1, high-frequency tube Q1 and resistance capacitance inductance element, output 315MHz high-frequency modulation signal is launched by antenna after the C2 coupling.When 17 pin level are low level, the blocking of oscillator, no high-frequency modulation signal output.
Receiver comprises power supply and power indicating circuit, and shown in Fig. 7-1, civil power 220V one line connects the end of R1, C1, and R1, the C1 other end and another line of 220V connect rectifier bridge.Rectifier bridge negativing ending grounding, positive pole meet current-limiting resistor voltage divider R15, and R15 connects with voltage-stabiliser tube VZ1 and constitutes mu balanced circuit, the plus earth of voltage-stabiliser tube VZ1.C5, C8 parallel connection be voltage-stabiliser tube VZ1 two ends again, form filter circuit.R5 serial connection light emitting diode D14 formation in parallel power indicating circuit with VZ1.The negative electrode of VZ1 connects input pin 1 pin of three-terminal voltage-stabilizing pipe 78L05, the 2 pin ground connection of 78L05, and output pin 3 pin and 2 pin C4 in parallel, C7 filter capacitor, 3 pin connect current-limiting resistor voltage divider R14.The other end of R14 C3 in parallel, C6 filter capacitor with ground, output voltage JSP.
After alternating current 220V voltage process RC (R1, C1) the decompression network step-down, it is carried out full-wave rectification, promptly four commutation diodes constitute full-wave rectifying circuits.Constitute filter circuit of pressure-stabilizing by current limliting divider resistance R15, Zener diode VZ1 and capacitor C 5, C8 after the rectification, voltage is stabilized in 8.2V; 8.2V voltage is again through three-terminal voltage-stabilizing pipe 78L05 output 5V voltage; 5V voltage is exported JSP voltage through current limliting divider resistance R14.8.2V voltage mainly is to be flashlight driving circuit and delay circuit power supply, and lights the LED luminous tube, is convenient to the power work indication; 5V voltage is mainly the musical film power supply; JSP provides power supply for receiving circuit and decoding circuit.
Receiver comprises that antenna match receives modulation and amplifying circuit, and shown in Fig. 7-2, antenna E1 connects the colelctor electrode of L2, C17 and triode Q5.L2, the C17 other end connect R9, R18 and C15.The R9 other end connects R14 (JSP voltage), and the C15 other end connects the base stage of Q5.The collector and emitter of Q5 also connects capacitor C 18, and emitter stage connects inductance L 3, and base stage connects C16, R17, R19.The other end of L3 connects ground connection behind C14 and the R21, C16 other end ground connection, another termination of R17 R14 (JSP) and with ground shunt capacitance C13, the anode of another termination fast recovery diode of R19 D8, D8 minus earth.A pair of earth capacitance C12 of another termination of R18 and the positive pole that is connected coupling capacitor C 19.
The negative pole of C19 connects 1 pin of six reverser U3 (CD4069), and 1, the 2 pin shunt capacitance C21 of U3 and resistance R 22,2,3 pin link to each other, 3,4 pin parallel resistance R23,4,5 pin shunt capacitance C20,5,6 pin shunt capacitance C22.5 pin connect resistance R 26, R27, and the other end of R27 connects 6 pin, and the R26 other end connects R14 (JSP).6 pin link to each other with 11 pin, 10,11 pin parallel resistance R24, and 10 pin connect the negative electrode of diode D9, and 9 pin meet anode and the R14 (JSP) of D9,8 pin output WX_I.14 pin of U3 meet R14 (JSP), 7 pin ground connection.
After antenna receives high-frequency signal, by L2, C17 form the LC oscillating circuit antenna-matching circuit and 9018 and the detection mixting circuit formed of capacitance-resistance sensing unit the high-frequency signal that receives is carried out demodulation.The signal INCD that demodulation is come out is coupled to 6 not gate chip CD4069 through C19, and the amplifying circuit that the not gate of CD4069 and not gate and resistance constitute amplifies and shaping restituted signal, last outupt coded signal WX_I.TC11 among the figure represents that 6 pin link to each other with 11 pin.
Receiver comprises decoding circuit, and shown in Fig. 7-3,18 pin of decoding chip U4 (2272_M4) connect R14 (JSP), 9 pin ground connection.14 pin link to each other with 8 pin of six reverser U3 (CD4069), and 15,16 pin also meet oscillation resistance R28,17 pin output WX_O.
Code signal WX_I imports 14 pin, if the code signal address is consistent with the decoder address, and 17 pin output (WX_O) high level, otherwise no-output.Resistance R 28 is a chip oscillate resistance.
Receiver comprises function selector circuit, shown in Fig. 7-4, is made up of toggle switch and diode.
The 3rd pin of toggle switch SW1 connects 17 pin of decoding chip U4 (2272_M4), 1 pin (A shelves) connects 555 delay circuit driving stage resistance R 2,2 pin (B shelves) connect the 2nd pin of Music Clip MSC-102E, 4 pin (C shelves) are connected respectively to 2 pin (B shelves) and 1 pin (A shelves) of toggle switch by two diode D6 and D7, and 5 pin are unsettled.
The FLASH shelves are selected flash mode; The MSC shelves pattern that selects a sound; FLASH, MSC shelves are selected flash of light+acoustic pattern.D6, D7 play buffer action among the figure.
Receiver connects 555 delay circuits, shown in Fig. 7-5, the end of R2 connects toggle switch 1 pin that gear is selected circuit, the other end connects the base stage of triode Q2, transistor emitter ground connection, colelctor electrode connects 2 pin of pull-up resistor R3 and 555 timer U5, and the other end of pull-up resistor R3 connects 8 pin of U5.The 1 pin ground connection of 555 timer U5,4,8 pin link to each other and are connected to the negative electrode of the voltage-stabiliser tube VZ1 of power circuit.6,7 pin link to each other and connect a direct-to-ground capacitance C9, and R11 connects 8 pin and 7 pin of U5.The 3 pin output time delayed signal JQ of U5.
The delay function of delay circuit is finished by 555 timers, and delay time length is determined by the product of R11 and C9.It is high level at ordinary times that time-delay triggers pin two, and decoded signal WX_O is by selector switch gating FLASH delay circuit, and the FLASH signal drives Q2 makes the 2nd pin produce trailing edge, triggers 555 timers, and the 3rd pin sends time delayed signal JQ.
Flash lamp circuit is made up of control relay circuit, halfwave rectifier, flicker control, booster circuit, flash lamp etc. shown in Fig. 7-6.VI and VO directly connect alternating current 220V voltage in the circuit.R6 one end connects the 3rd pin of 555 timer U5, and the other end connects base stage and the resistance to earth R7 of triode Q1.Triode Q1 grounded emitter, colelctor electrode connects the coil pin of electromagnetic relay K1.Another pin of relay K 1 coil connects the negative electrode of the voltage-stabiliser tube VZ1 of power circuit.The coil two ends of relay K 1 sustained diode 5 in parallel.The line of civil power 220V is connected to relay K 1 movable contact weld tabs, and another line is as common port.The static electric shock weld tabs of relay K 1 connects the anode of commutation diode D10.The D10 negative electrode connects protective resistance R4, and the other end of R4 connects 1 pin, charge and discharge capacitance C2 positive pole and the R12 of resistance R 13, flash lamp.3 pin of flash lamp, capacitor C 2 negative poles and another termination common port of R12.The R13 other end connects neon lamp DS1, IGCT Q4 anode and electric capacity 10.The neon lamp DS1 other end is connected to the trigger end of IGCT Q4 by R16.IGCT Q4 negative electrode connects common port, negative electrode and trigger end and connecting resistance R8.Capacitor C 10 other ends connect the centre cap of stepup transformer L1.The elementary termination common port of stepup transformer L1, secondary end connect the end that excites of flash lamp.
Time delayed signal JQ drives relay R ELAY-SPST through current-limiting resistance R6, connect K1, the D10 halfwave rectifier is charged to C10 by R13 after the R4 current limliting powers up and give capacitor C 2 chargings for la lampe ASH_XE two ends, and light neon lamp, trigger IGCT BT169, neon lamp extinguishes, the C10 discharge, step-up coil L1 boosts, thereby the trigger flashing lamp, the C2 discharge makes the flash lamp flash of light, and then BT169 ends, the trigger end triggerless, R13 to the C10 charging, lights neon lamp, so repeatedly again, flash lamp constantly glimmers, and finishes until time delayed signal.R12 is used for C2 and discharges holding circuit slowly among the figure.1N4148 is a fly-wheel diode, protection triode Q1.
Music circuit is shown in Fig. 7-7, and decoded signal is through selector switch gating MSC circuits for triggering, and MSC triggers the trigger end of Music Clip, makes the 3rd pin output audio signal, amplifies rear drive loudspeaker LS1 sounding through Q3.The operating voltage of Music Clip is about 3V, handles so carry out step-down with D11, D12, three diode pair 5V of D13 voltage.
The plug receptacle circuit is made up of jack and current-limiting resistance shown in Fig. 7-8, and R10 one end is connected to 3 pin of 555 timer U2.The other end connects the interior contact of 3.5mm jack J3.The outer contact ground connection of jack J3.
This circuit aims at external wired vibrator and designs.Jack is that diameter is two contact jack of 3.5mm.Inner core 555 meets time delayed signal JQ.
Wired vibrator is made up of plug, switch, relay, vibrating motor as shown in Figure 8, and the contact connects the interior contact of 3.5mm jack in the 3.5mm plug, drives the base stage of triode Q1, outer contact ground connection, and connect vibrator switch S 1.The other end of S1 connects triode Q1 emitter stage, battery BT1 negative pole and vibrating motor M1 negative pole.Triode Q1 colelctor electrode connects the coil pin of electromagnetic relay K1.Another pin of relay K 1 coil and relay K 1 movable contact weld tabs connect the positive pole of battery BT1.The coil two ends of relay K 1 sustained diode 1 in parallel.Relay K 1 stationary contact weld tabs is connected to the positive pole of vibrating motor M1.
During work, the S1 closure is inserted the 3.5mm plug in the jack of receiver bottom, and the time delayed signal of receiver drives this vibrator triode Q1, and 2 make the actuating of relay, connect vibrating motor M1 power supply, and vibrating motor is started working, and time delayed signal finishes in receiver.
The wireless vibration device comprises that antenna match receives modulation and amplifying circuit, and shown in Fig. 9-1, antenna E1 connects the colelctor electrode of L1, C3 and triode Q1.L1, the C3 other end connect R1, R5 and C2.The R1 other end connects 3.6V voltage-stabiliser tube D3 negative electrode, and the C12 other end connects the base stage of Q1.The collector and emitter of Q1 also connects capacitor C 7, and emitter stage connects inductance L 2, and base stage connects C6, R6, R11.The other end of L2 connects ground connection behind C5 and the R12, C6 other end ground connection, another termination of R6 3.6V voltage-stabiliser tube D3 negative electrode and with ground shunt capacitance C4, the anode of another termination fast recovery diode of R11 D2, D2 minus earth.A pair of earth capacitance C1 of another termination of R5 and the positive pole that is connected coupling capacitor C 8.
The negative pole of C8 connects 1 pin of six reverser U6 (CD4069), and 1, the 2 pin shunt capacitance C10 of U6 and resistance R 13,2,3 pin link to each other, 3,4 pin parallel resistance R14,4,5 pin shunt capacitance C9,5,6 pin shunt capacitance C11.5 pin connect resistance R 9, R15, and the other end of R15 connects 6 pin, and the R9 other end connects 3.6V voltage-stabiliser tube D3 negative electrode.6 pin link to each other with 11 pin, 10,11 pin parallel resistance R7, and 10 pin connect the negative electrode of diode D1, and 9 pin connect anode and the 3.6V voltage-stabiliser tube D3 negative electrode of D1,8 pin output WX_I.14 pin of U6 connect 3.6V voltage-stabiliser tube D3 negative electrode, 7 pin ground connection.
After antenna receives high-frequency signal, by L1, C3 form the LC oscillating circuit antenna-matching circuit and 9018 and the detection mixting circuit formed of capacitance-resistance sensing unit the high-frequency signal that receives is carried out demodulation.The signal INCD that demodulation is come out is coupled to 6 not gate chip CD4069 through C8, and the amplifying circuit that the not gate of CD4069 and not gate and resistance constitute amplifies and shaping restituted signal, last outupt coded signal WX_I.TC11 among the figure represents that 6 pin link to each other with 11 pin.
The wireless vibration device also comprises decoding circuit, and shown in Fig. 9-2,18 pin of decoding chip U7 (2272M4) connect 3.6V voltage-stabiliser tube D3 negative electrode, 9 pin ground connection.14 pin link to each other with 8 pin of six reverser U6 (CD4069), and 15,16 pin also meet oscillation resistance R10,17 pin output WX_O.
Code signal WX_I imports 14 pin, if the code signal address is consistent with the decoder address, and 17 pin output (WX_O) high level, otherwise no-output.Resistance R 10 is a chip oscillate resistance.
The wireless vibration device also comprises the time-delay vibrating circuit, shown in Fig. 9-3, the end of R2 connects 17 pin of coding chip U7 (2272_M4), the other end connects the base stage of triode Q2, transistor emitter ground connection, colelctor electrode connects 2 pin of pull-up resistor R3 and 555 timer U8, and the other end of pull-up resistor R3 connects 8 pin of U8.The 1 pin ground connection of 555 timer U8,4,8 pin link to each other and are connected to battery BT1 positive pole.6,7 pin link to each other and connect a direct-to-ground capacitance C9, and R16 connects 8 pin and 7 pin of U8.The 3 pin output time delayed signal JQ of U8.
The 3 pin series limiting resistor R4 of U8 are connected to the base stage of triode Q3, the whole ground connection of negative pole of the emitter stage of triode Q3, battery BT1 negative pole and vibrating motor M1.Triode Q1 colelctor electrode connects the coil pin of electromagnetic relay K1.The end of another pin of relay K 1 coil and relay K 1 movable contact weld tabs and current-limiting resistor voltage divider R17 links to each other, relay K 1 movable contact weld tabs connects power switch S1, the other end of S1 connects the positive pole of battery BT1, the coil two ends of relay K 1 sustained diode 4 in parallel.Relay K 1 stationary contact weld tabs is connected to the positive pole of vibrating motor M1.The current-limiting resistor voltage divider R17 other end connects 3.6V voltage-stabiliser tube D3 negative electrode, D3 anode utmost point ground connection.3.6V voltage-stabiliser tube D3 two ends filter capacitor C13 in parallel, C14.
Vibrating circuit: time delayed signal JQ drives triode Q3 and makes the actuating of relay, connects the vibrating motor power supply, and vibrating motor is started working, and finishes until time delayed signal.
Among Fig. 9-3, S1 is a power switch, and the effect of R17, D3 is that the 9V cell voltage is converted to 3.6V voltage, powers to receiving circuit.
Claims (6)
1. the safety instruction device of a kettle, it is characterized in that: device comprises transmitter and receiver, wherein,
Transmitter comprises coding chip U2, be connected with temperature sensing tube switch U1 between the power input of coding chip U2 and the battery BT1, be connected with oscillating circuit on the coding chip U2, the output of coding chip U2 also is connected with modulation circuit and radiating circuit, is connected with the transmission antennas transmit signal on the radiating circuit;
Receiver receives the high-frequency signal that transmitter sends by antenna, through antenna match, demodulation, shaping outupt coded signal, input decoding chip U4 decoding, the decoded signal of decoding chip U4 outputs in one or more circuit in music circuit, flash lamp circuit and the vibrating circuit, and music circuit, flash lamp circuit and vibrating circuit provide prompting to report to the police.
2. the safety instruction device of kettle according to claim 1, it is characterized in that: the coding chip U2 in the transmitter selects the eight bit address sign indicating numbers (PT2262 of A0～A7) for use, its 18 pin connects temperature sensing tube switch U1,9 pin are connected battery BT1 negative pole with 14 pin, 15,16 pin parallel oscillation resistance R 2,17 pin connect current-limiting resistance R1 and outputting encoded data, modulation circuit is connected 18 pin of coding chip U2 with inductance L 1 one ends in the radiating circuit, the other end connects 1 pin of capacitor C 3 and inductance L 2 and crystal oscillator Y1, the other end of capacitor C 3 connects the emitter stage of triode Q1 and the colelctor electrode of Q2, inductance L 2 other ends connect colelctor electrode and the coupling capacitance C2 of triode Q1, the base stage of triode Q1 connects 2 pin of crystal oscillator Y1, the base stage serial connection current-limiting resistance R1 of triode Q2 is to 17 pin of coding chip U2, the emitting stage of Q2 connects the negative pole of battery BT1, the 3 pin ground connection of crystal oscillator Y1,1,3 pin shunt capacitance C1,1,2 pin parallel resistance R3, antenna is penetrated in the other end sending and receiving of coupling capacitance C2.
3. the safety instruction device of kettle according to claim 1 and 2, it is characterized in that: the decoding chip PT2272 with described coding chip U2 pairing is arranged in the receiver, attaching plug connects mains-supplied, output voltage JSP after rectification, filtering, JSP provides power supply for receiving circuit and decoding circuit, and toggle switch is selected to connect flash of light or music or the flash of light+music that receiver connected or do not have four kinds of outputs of any operation.
4. the safety instruction device of kettle according to claim 3, it is characterized in that: the decoding chip PT2272 decoded output signal in the receiver triggers delay circuit, time delayed signal has the output of branch two-way, the one road outputs to switching tube, the actuating of relay and hold mode in delay time, connect the flash lamp circuit power supply, make flash lamp work, time-delay finishes, and flash lamp quits work; Another road outputs to vibrator.
5. the safety instruction device of kettle according to claim 3, it is characterized in that: after the antenna of receiving circuit receives high-frequency signal in the receiver, by L2, C17 form the LC oscillating circuit antenna-matching circuit and 9018 and the detection mixting circuit formed of capacitance-resistance sensing unit the high-frequency signal that receives is carried out demodulation, the signal INCD that demodulation is come out is coupled to 6 not gate chip CD4069 through C19, the amplifying circuit that the not gate of CD4069 and not gate and resistance constitute amplifies and shaping restituted signal, last outupt coded signal WX_I.
6. the safety instruction device of kettle according to claim 4, it is characterized in that: described vibrator is divided into a kind of of wired vibrator and wireless vibration device, and wherein wired vibrator passes through
Two core plugs patch in the jack of receiver, 555 delay circuits output time delayed signal, the vibrating motor power supply is connected in the adhesive of vibrator internal relay, the vibrator vibration; There is wireless receiving circuit wireless vibration device inside, wireless receiving circuit uses monolithic integrated chip MICRF002, wireless receiving circuit is directly finished reception, the demodulation to launcher signal, the signal of output is sent into decoding chip PT2272 decoding output and is triggered 555 delay circuits, 555 time delayed signals drive the vibrator internal relay, connect the vibrating motor power supply, vibrator works, time-delay finishes, and quits work.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200408726U CN201079285Y (en) | 2007-07-20 | 2007-07-20 | Safety prompting device for kettle |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007200408726U CN201079285Y (en) | 2007-07-20 | 2007-07-20 | Safety prompting device for kettle |
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| Publication Number | Publication Date |
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| CN201079285Y true CN201079285Y (en) | 2008-07-02 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007200408726U Expired - Fee Related CN201079285Y (en) | 2007-07-20 | 2007-07-20 | Safety prompting device for kettle |
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| CN (1) | CN201079285Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102240171A (en) * | 2010-11-18 | 2011-11-16 | 上海市民办尚德实验学校 | Boiling water reminder system |
| CN108814283A (en) * | 2018-06-29 | 2018-11-16 | 何江 | It is a kind of convenient for electric kettle that is visually impaired, listening barrier crowd to use |
-
2007
- 2007-07-20 CN CNU2007200408726U patent/CN201079285Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102240171A (en) * | 2010-11-18 | 2011-11-16 | 上海市民办尚德实验学校 | Boiling water reminder system |
| CN108814283A (en) * | 2018-06-29 | 2018-11-16 | 何江 | It is a kind of convenient for electric kettle that is visually impaired, listening barrier crowd to use |
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