CN202694056U - Automatic power-off energy saving device for household appliances - Google Patents

Abstract

An automatic power-off energy saving device for household appliances comprises a power detection module consisting of a current transformer arranged on a load circuit and a rectifying filter connected with the current transformer; a control display module consisting of a singlechip connected with the rectifying filter, a display module connected with the data output end of the singlechip, and a first solid-state relay connected with the control end of the singlechip and connected with the load circuit in parallel; and a control display module consisting of a second solid-state relay connected with the control end of the singlechip, wherein the second solid-state relay is serially connected with the load circuit. The automatic power-off energy saving device provided by the utility model can real-timely monitor the work state of a power consuming appliance to make response accurately, can execute data processing and control by adopting a STC12C5204AD singlechip, can realize automatic power off by digital-analog conversion and relay control technique, and can cut off power supplied to the device to realize zero power consumption in a standby state.

Description

The automatic power-off energy-saving apparatus of household electrical appliance

Technical field

The utility model belongs to the household electrical appliances field of energy-saving technology, is specifically related to a kind of automatic power-off energy-saving apparatus of household electrical appliance.

Background technology

Current, because after using electrical appliance, there is the custom of not pulling up plug in the user, the unnecessary power attenuation when therefore having caused electric appliance standby.The Tianjin citizen since not the custom of unplugg cause more than 100,000,000 yuan of the electricity charge of Tianjin 1 year waste.According to the measuring and calculating of household electrical appliances China information network, because of the power consumption that the domestic electric appliances standby causes, 100 yuan of left and right sides electricity charge of the average family many friendships of needs in a year are equivalent to the electricity charge of handing over 1 month more.And can make component aging reduction of service life during the electrical appliance standby, also might cause fire.But what use in the market generally all is the push-button switch socket, can not easily address this problem.

Summary of the invention

In order to overcome above-mentioned the deficiencies in the prior art, the purpose of the utility model device is to provide a kind of automatic power-off energy-saving apparatus of household electrical appliance, energy Real-Time Monitoring electrical appliance working condition, the automatic power-off energy-saving apparatus of accurately making a response, adopting the STC12C5204AD single-chip microcomputer to carry out data processes and controls, use digital-to-analog conversion, Control technology realization auto-breaking, and make self device outage, realize standby zero-power-consumption.

To achieve these goals, the technical scheme of the utility model device employing is:

The automatic power-off energy-saving apparatus of household electrical appliance comprises:

The power detection module that the rectifier filer that is arranged at the current transformer on the load circuit and is connected with described current transformer forms;

The single-chip microcomputer that connects described rectifier filer, the display module that is connected with described single-chip data output terminal, and the control display module of the first solid-state relay that is connected with described Single-chip Controlling end composition, described the first solid-state relay is connected on the load circuit;

And, the terminal control module that the second solid-state relay that is connected with described Single-chip Controlling end forms, described the second solid-state relay is serially connected with on the load circuit.

Compared with prior art, the utility model can perform well in the family of the frequent standby of electrical appliance, can bring a lot of facilities and saves energy to people.

Description of drawings

Fig. 1 is the utility model apparatus structure block diagram.

Fig. 2 is the utility model rating of set detection module circuit theory diagrams.

Fig. 3 is the control of the utility model device and information display module circuit theory diagrams.

Fig. 4 is the utility model device relay control module circuit theory diagrams.

Fig. 5 is the utility model device workflow diagram.

Embodiment

Below in conjunction with accompanying drawing and example the utility model device is described in further details.

As shown in Figure 1, the utility model device comprises power detection module, control and information display module and three parts of relay control module generally.

Power detection module is comprised of the rectifier filer that is arranged at the current transformer on the load circuit and be connected with described current transformer, a kind of physical circuit that the utility model device adopts as shown in Figure 2, electric current in the current transformer TR1 sampling load circuit, become direct current signal after the bridge rectifier rectification through four diode IN4007 formations, again through capacitor C 1, the pi type filter that capacitor C 2 and resistance R 1 consist of carries out the filtering of π type, pulsation is reduced, add again the 5.1V voltage stabilizing diode, effect is when electrical appliance power is larger, it is larger that current transformer TR1 induces electric current, be converted to voltage signal and might be higher than Chip Microcomputer A/D conversion and can identify voltage range, use 5.1V voltage stabilizing diode 1N4733A can make output voltage be 5.1V to the maximum.Wherein also having inductance coefficent is that the inductance L 1 of 1mH can prevent that circuit from shaking, and the P1^4 port of at last stable analog DC signal being sent into single-chip microcomputer carries out analog to digital conversion and becomes digital signal and process.

Control and information display module are by the single-chip microcomputer that connects described rectifier filer, the display module that is connected with described single-chip data output terminal, and the first solid-state relay that is connected with described Single-chip Controlling end forms, a kind of physical circuit that the utility model device adopts is circuit as shown in Figure 3, volume problem when cause is considered Power Management Design, adopt the STC12C5204AD single-chip microcomputer of DIP20 pin package as main control chip, this series monolithic is at a high speed, low-power consumption, super strongly disturbing 8051 single-chip microcomputers of new generation, inside is integrated with 8 A/D conversions (300,000 per seconds), in the design, because of less demanding to the A/D slewing rate, be to change once 140 clock period so the A/D slewing rate is set.The display part adopts LCD1602 as display module, because LCD1602 needs eight data lines and two control lines totally ten line traffic controls, and the pin that single-chip microcomputer self provides can not be satisfied the demand, so adopt deserializer 74HC595 to come the expansion I/O port in design, drives LCD1602.

The peripheral components of single-chip microcomputer is except crystal oscillator, reset circuit is outside the permanent circuit of minimum system, an ad hoc signal lamp, P1_3 and two ports of P3_7 at single-chip microcomputer are connected to two 9012 positive-negative-positive triodes, be used for driving the relay in control electrical appliance loop and the coil of control single chip computer control section power supply relay, in program, be low level if establish the P1_3 port, then Q2 triode conducting, the key2 terminal will be exported high level, thereby making relay R L2(Single-chip Controlling part power supply relay) coil gets electricly, makes and gets an electric shock closedly, and port P3_7 port function is identical with the P1_3 port.

Terminal control module comprises the second solid-state relay on the load circuit of being connected to that is connected with described Single-chip Controlling end, a kind of physical circuit that the utility model adopts as shown in Figure 4, the control end supply module adopts switching mode voltage stabilizer, Switching Power Supply is high because of efficient, the characteristics such as voltage adaptation is strong and widespread use, in this device, adopting ripe switch power module is the control module power supply, front end in Switching Power Supply adds the second solid-state relay RL2, control self on/off, make cut-out electrical appliance power supply also can cut off self power supply afterwards.

In the design relay circuit, two relay R L1 and RL2 all adopt the Chang Kaiduan interface, and when the corresponding I/O mouth of Single-chip Controlling set to 0 current potential, the positive-negative-positive triode was conducting, the relay adhesive, when needs cut off the electric energy of Switching Power Supply, only need the set of the corresponding I/O mouth of Single-chip Controlling, the triode cut-off, relay electric-loss, main contacts is by springs return, and Switching Power Supply is namely cut off the power supply, the corresponding outage of control module.

In circuit, because relay can not conducting under state of nature, Switching Power Supply can not get electric, if needing the startup whole system then to need to use the 5V power supply that carries is the second solid-state relay RL2(Single-chip Controlling part power supply relay) coil power supply, make Switching Power Supply get electric and Single Chip Microcomputer (SCM) system is worked on power, thereby drive again conversely relay R L2 coil, this moment self-powered can stopping power supply, whole system starts also normal operation.

The workflow of the utility model device as shown in Figure 5, when use self-powered be the second solid-state relay RL2 coil power supply after, the relay main contacts is closed, Switching Power Supply gets electric, the mutually deserved electricity of control module, single-chip microcomputer makes the second solid-state relay RL2 self-locking by the conducting of control triode again, thereby can make whole system no longer need the self-powered relay coil power supply that is after normal operation.Initialization LCD display and A/D conversion are display format to be set and A/D slewing rate and signal input pin etc. are set.After initialization was complete, it is to be recycled that master routine enters etc., waits for response A/D interruption subroutine behind the A/D EOC, so power parameter demonstration, data analysis, Control subprogram are all finished in the A/D interruption subroutine.

Data analysis algorithm meeting real-time analysis data in A/D interrupts, current transformer gathers current electric current, after the pre-set programs in the single-chip microcomputer thinks that electrical appliance enters standby mode, to control the first solid-state relay RL1 and cut off the main line power supply, control the power supply of the second solid-state relay RL2 shearing device own, realize standby self-disconnection.

Claims (1)

1. the automatic power-off energy-saving apparatus of household electrical appliance is characterized in that, comprising:

The power detection module that the rectifier filer that is arranged at the current transformer on the load circuit and is connected with described current transformer forms;

The single-chip microcomputer that connects described rectifier filer, the display module that is connected with described single-chip data output terminal, and the control display module of the first solid-state relay that is connected with described Single-chip Controlling end composition, described the first solid-state relay is connected on the load circuit;

And, the terminal control module that the second solid-state relay that is connected with described Single-chip Controlling end forms, described the second solid-state relay is serially connected with on the load circuit.

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