CN202033630U

CN202033630U - Electricity utilization time-limiting and timing control device for household appliances

Info

Publication number: CN202033630U
Application number: CN2011200826051U
Authority: CN
Inventors: 杨健
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-03-25
Filing date: 2011-03-25
Publication date: 2011-11-09
Anticipated expiration: 2021-03-25

Abstract

The utility model discloses a time-limiting and timing control device for household appliances, which comprises a time setting unit, a CPU (central processing unit), a time display unit and a household appliance electricity-limiting unit. A household appliance can be directly inserted onto a three-phase power socket controlled by the household appliance electricity-limiting unit. The time-limiting and timing control device has the advantages that the time-limiting and timing control device adopts a single chip microcomputer as a core control device, is favorable for realizing miniaturized, multifunctional and intelligent products, reduces unnecessary electricity utilization time of the household appliances, prevents users from forgetting to switch off power sources of the household appliances, eradicates potential safety hazards, greatly prolongs the service lives of the various household appliances, is simple and convenient in operation, is energy-saving and environment-friendly, and guarantees safety of electric equipment.

Description

A kind of Household Appliance is prescribed a time limit, time cycle controller

Technical field

The utility model relates to a kind of Household Appliance time-limit attachment, particularly relate to a kind of based on single-chip microcomputer as electricity consumption prescribe a time limit, the Household Appliance of timing controlled core devices in limited time, time cycle controller, belong to Household Appliance in limited time, the timing controlled technical field.

Background technology

We often meet that some need be prescribed a time limit, thing regularly in daily life, and for example: air-conditioning can be set in any time time opening and close; During the washing machine washing clothes, can be set in after a few minutes to the time of dozens of minutes, stop to power to washing machine according to user's needs; Electric fan also can be set in tens of minutes time according to user's needs, shuts down then.Finish this in limited time, timer regularly has varied, in household electrical appliance, adopt mechanical timer mostly, the principle design that its principle of work is wound up according to general clock and watch, rotate by the clockwork spring driven gear, the further rotation of the circular moving contact console panel of rotating band groove, thereby the break-make of control power contact.This timer, though knot is simple, with low cost, easy to maintenance, closure that the contact of its switch is frequent and disconnection can have been shortened its serviceable life widely.

The kind of the timer that occurs on the market is a lot of now, comprising the integrated chip timer as 555; Along with the application of computer technology, especially constantly move towards deeply in recent years, drive making rapid progress of timer, timer field control technology with the application of singlechip technology in social every field.Along with the application of singlechip technology also becomes more and more widely, making electronics---the thing that this does not have life has originally more and more had the characteristics of " intelligence ".And single-chip microcomputer is serving as the effect of " brain " in control system, is commanding control system to carry out the work that need finish.

We produce and each field of life in, every have the place of automatic demand for control all can have the control technology of single-chip microcomputer to occur, from simple to complexity, to underground, nearly all there is use in the every place that can imagine, uses the demand of single-chip microcomputer from aerial, ground; Now,, but still have and manyly can use Single-chip Controlling and unredeemed project can be developed although The application of single-chip computer is quite general, and broad market prospect.

Summary of the invention

Technical problem to be solved in the utility model is, provide a kind of based on monolithic processor controlled Household Appliance in limited time, time cycle controller.

The technical scheme that the utility model adopted is: Household Appliance is prescribed a time limit, time cycle controller, comprise, time setting unit, CPU element, decoder driver unit, time showing driver element, time display unit and the electrical appliance unit of rationing the power supply, described time setting unit is electrically connected with described CPU element, described CPU element is electrically connected with time display unit by decoder driver unit and time showing driver element, and described CPU element and the described electrical appliance unit of rationing the power supply is electrically connected.CPU element also comprises, reset circuit, warning circuit and CPU, and reset circuit is electrically connected with CPU, and CPU exports to warning circuit and realizes reporting to the police in limited time.The electrical appliance employed device of rationing the power supply in unit of rationing the power supply is relay or solid-state relay or controllable silicon, and household electrical appliance can directly be inserted on rationed the power supply by electrical appliance the three-phase power socket that the unit controls.The model of the integrated circuit that CPU uses in the CPU element is AT8902051, the model of decoder driver integrated circuit that the unit uses is CD4511, the model of time showing integrated circuit that driver element uses is ULN2003, and the employed display device of time display unit is a common cathode LED charactron.

The beneficial effects of the utility model are that the employing single-chip microcomputer is a kernel control chip, helps miniaturization, multifunction and the intellectuality of product; Reduce the unnecessary electricity consumption time of household electrical appliance, control automatically, it is laborsaving to save worry, and avoids the user to forget the power supply that turn-offs household electrical appliance, stops safety insurance and suffers from, to carrying out scientific management, the serviceable life of significantly improving various electrical equipment the conduction time of household electrical appliance; Timer can charge, cooking, regularly use with different occasions such as prescribe a time limit; Easy and simple to handle, a tractor serves several purposes reduces the energy and material section and consumes, energy-conserving and environment-protective, and the safety of assurance consumer.

Description of drawings

Fig. 1 is that the utility model circuit is formed block scheme;

Fig. 2 is the reset circuit electrical schematic diagram of the utility model CPU element;

Fig. 3 is the warning circuit electrical schematic diagram of the utility model CPU element output;

Fig. 4 is the ration the power supply electrical schematic diagram of unit of the utility model electrical appliance.

Embodiment

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

Fig. 1 is that the utility model circuit is formed block scheme; As shown in Figure 1, the utility model Household Appliance is prescribed a time limit, time cycle controller, comprise, time setting unit, CPU element, decoder driver unit, time showing driver element, time display unit and the electrical appliance unit of rationing the power supply, described time setting unit is electrically connected with described CPU element, described CPU element is electrically connected with time display unit by decoder driver unit and time showing driver element, and described CPU element and the described electrical appliance unit of rationing the power supply is electrically connected.CPU element also comprises, reset circuit, warning circuit and CPU, and reset circuit is electrically connected with CPU, and CPU exports to warning circuit and realizes reporting to the police in limited time.The electrical appliance employed device of rationing the power supply in unit of rationing the power supply is relay or solid-state relay or controllable silicon, and household electrical appliance can directly be inserted on rationed the power supply by electrical appliance the three-phase power socket that the unit controls (not shown).The model of the integrated circuit that CPU uses in the CPU element is AT8902051, the model of decoder driver integrated circuit that the unit uses is CD4511, the model of time showing integrated circuit that driver element uses is ULN2003, and the employed display device of time display unit is a common cathode LED charactron.

The model of CPU in the CPU element is AT8902051, and there is one 8 CPU this 51 series monolithic inside, and CPU inside has comprised arithmetical unit, controller and some registers simultaneously.The inner structure of CPU has arithmetic logic unit alu (ArithmeticLogic Unit), totalizer A (8), register B (8), program status word (PSW) PSW (8), programmable counter PC (to be also referred to as instruction pointer sometimes by the CPU inside of 8 MCS-51 single-chip microcomputer, be IP, 16), parts such as address register AR (16), data register DR (8), order register IR (8), command decoder ID and controller form.

The utility model in limited time, the principle of work of timer conter is that 16 timer/counter is exactly one in fact and adds 1 counter, and its control circuit is subjected to software control and switching.When timer/counter was the timing working mode, 1 signal that adds of counter was produced by 12 fractional frequency signals of oscillator, that is, machine cycle of every mistake, counter adds 1, till the meter spill-over goes out.Obviously, the timing of timer is relevant with the oscillation frequency of system.Because a machine cycle equals 12 oscillation period, so if count frequency fcount=1/12osca crystal oscillator is 12MHz, then the count cycle is:

T＝1/(12X106)HzX1/12＝1us

This is the shortest timing cycle.If will prolong timing, then need to change the initial value of timer, and will suitably select the length (as 8,13,16 etc.) of timer.

Control register timer/counter T0 and T1 have 2 control register one TMOD and WON, and they are used for being provided with the working method of each timer/counter respectively, select regularly or tally function, and control starts operation, and as the sign of running status etc.Wherein, there are 4 in the TCON register in addition and are used for interrupt system.In order to make hardware circuit simple, also can adopt the demonstration of the direct driving LED charactron of single-chip microcomputer (the AT89C2051 delivery outlet can absorb the 20mA electric current) with dynamic scan method realization LED, formed outer the showing in the display circuit by CD4511 and ULN2003 with interior apparent.This partial circuit is regularly, the core component of timer operation control, play a part control regularly, all running statuses in limited time.During hardware debug, the input of the oscillator of MCS-51 is finished by pin 19 (XTAL1) and pin 18 (XTAL2) respectively.As long as with this two external quartz crystals of pin and ceramic condenser, just can form complete oscillatory circuit with CPU inside.The machine cycle of MCS-51 is contained 6 period of state, therefore and each period of state is 2 cycle oscillators, and a machine cycle has 12 oscillation period, is 12MHz as the frequency of oscillator, a cycle oscillator is 1/12 microsecond, and a machine cycle is a microsecond.

Fig. 3 is the reset circuit electrical schematic diagram of the utility model CPU element; As shown in Figure 3, reset circuit resistance R 9 gives capacitor C 2 chargings, the voltage of electric capacity slowly rises, until arriving power source voltage Vcc, when the voltage of electric capacity does not reach power source voltage Vcc, the output of CPU element, give capacitor C 2 chargings by resistance R 9, the voltage of electric capacity slowly rises up to Vcc, when the voltage of electric capacity does not reach power source voltage Vcc, the cpu reset pin is similar to low level, so cpu reset, when the voltage of electric capacity reaches supply voltage or during near power source voltage Vcc, the nearly high level of cpu chip resetting pin, so cpu chip stops to reset, reset and finish.Each single-chip microcomputer all needs to reset when starting, so that each parts of CPU and system are in definite original state, and starts working from initial state.The reset signal of 89 series monolithics is to be input to the Schmidt trigger in the chip from the RST pin.When system is in normal operating conditions, and oscillator stable after, if a high level is arranged on the RST pin and keep more than 2 machine cycles (24 oscillation period), then CPU just can respond and with system reset.

Fig. 4 is the warning circuit electrical schematic diagram of the utility model CPU element output; As shown in Figure 4, warning circuit adopts common 5V finished product hummer.The characteristics of hummer are that loss current is low, volume output is high; The clear Zhejiang of tonequality is thorough; Volume is little, in light weight; The interference of no electromagnetism and radio frequency.Can be used in various alarm buzzing; The mobile phone hummer; The toy hummer; Various household electrical appliance hummer.

The 9014th, NPN type triode, grounded emitter, relay coil one termination positive supply one termination collector, behind the resistance that the base stage serial connection is about 10 ohm, remove to control luminotron with 9 pin of CPU with the contact contact of relay again, relay is the control device in the circuit, when CPU judges when reaching official hour, the action of CPU pilot relay, thus make controlled output circuit conducting or disconnection.Household electrical appliance can directly be inserted on rationed the power supply by electrical appliance the three-phase power socket that the unit controls (not shown).The characteristics of relay are that working stability, long service life and volume are little etc.Be widely used in electric power protection, robotization, motion, remote metering and the communications field.

It is kernel control chip that the utility model adopts the AT8902051 single-chip microcomputer, the power supply that this electronic timing, timer can satisfy household electrical appliance carries out switching control, simultaneously, make things convenient for the operation of user to the electronic timing group, maximum time can reach the 24n. maximal accuracy and can arrive minute.

Electronics in limited time, timer in household electrical appliance through the shutdown automatically that is usually used in delaying time, regularly and prescribe a time limit etc.Because adopting single-chip microcomputer is kernel control chip, helps miniaturization, multifunction and the intellectuality of product; Reduce the unnecessary electricity consumption time, control automatically, it is laborsaving to save worry, and avoids the user to forget the power supply that turn-offs household electrical appliance, stops safety insurance and suffers from, to carrying out scientific management, the serviceable life of significantly improving various electrical equipment the conduction time of household electrical appliance; Timer can charge, cooking, regularly use with different occasions such as prescribe a time limit; Easy and simple to handle, a tractor serves several purposes reduces the energy and material section and consumes, energy-conserving and environment-protective, and the safety of assurance consumer.For example, time-delay automatically shutdown can be used for: the delay cut-off of radio, televisor, sound-track engraving apparatus, hypnotic device, gate light, street lamp, auto bulb, steering indicating light and other electrical appliances and the time-delay power supply etc. of autotomying.Regularly can be used for: the time exposure of camera and timing flash of light, the timing speed governing of electric fan, the timing alarm that the timing shutdown of baking oven, refrigerator doors are opened, time-delay hypnotic device, time-delay electric bell, time-delay electronic lock, touch time switch etc.For example: the timer in the air conditioner, after work a period of time, can cut off the air conditioner power supply automatically and quit work, when use night in summer, set the working time earlier before sleeping, wait and arrived preset time after sleeping soundly, air conditioner is shutdown automatically just, convenient and energy-saving.

It is worthy of note; protection domain of the present utility model is not limited to above-mentioned instantiation mode; according to basic fundamental design of the present utility model; also available essentially identical structure is transformed the electrical appliance unit of rationing the power supply; still can realize novel rationing the power supply, purpose regularly; as long as those of ordinary skills need not through creative work, the embodiment that can associate all belongs to protection domain of the present utility model.

Claims

A Household Appliance in limited time, time cycle controller, it is characterized in that, comprise, time setting unit, CPU element, decoder driver unit, time showing driver element, time display unit and the electrical appliance unit of rationing the power supply, described time setting unit is electrically connected with described CPU element, described CPU element is electrically connected with time display unit by decoder driver unit and time showing driver element, and described CPU element and the described electrical appliance unit of rationing the power supply is electrically connected.
2. a kind of Household Appliance according to claim 1 is prescribed a time limit, time cycle controller, it is characterized in that described CPU element also comprises, reset circuit, warning circuit and CPU, described reset circuit is electrically connected with described CPU, and described CPU exports to described warning circuit and realizes reporting to the police in limited time.
3. a kind of Household Appliance according to claim 1 in limited time, time cycle controller, it is characterized in that the described electrical appliance employed device of rationing the power supply in unit of rationing the power supply is relay or solid-state relay or controllable silicon.
4. a kind of Household Appliance according to claim 1 is prescribed a time limit, time cycle controller, it is characterized in that, the model of the integrated circuit that CPU uses in the described CPU element is AT8902051, the model of described decoder driver integrated circuit that the unit uses is CD4511, the model of described time showing integrated circuit that driver element uses is ULN2003, and the employed display device of described time display unit is a common cathode LED charactron.