CN201883318U

CN201883318U - Clothes humidity detection device of clothes dryer

Info

Publication number: CN201883318U
Application number: CN2010206635532U
Authority: CN
Inventors: 张永刚
Original assignee: GUANGDONG YINGKE ELECTRONIC CO Ltd
Current assignee: GUANGDONG YINGKE ELECTRONIC CO Ltd
Priority date: 2010-12-16
Filing date: 2010-12-16
Publication date: 2011-06-29
Anticipated expiration: 2020-12-16

Abstract

The utility model discloses a clothes humidity detection device of a clothes dryer, which comprises an isolated power supply conversion module, a detection ring module, a signal conversion module, a signal isolation module and a signal processing module, wherein the isolated power supply conversion module is electrically connected with and supplies power to the signal conversion module, the signal isolation module, the detection ring module and the signal processing module. Since low-voltage signals are input into a central processing unit (CPU) after detected high-voltage signals are processed to the low-voltage signals, the operation accuracy is improved, the isolation of the high-voltage signals can be realized, the product safety is improved, the control circuit of the device is simple and the device can be realized easily; and moreover, since the signals are isolated from the CPU, the situations of electric leakage and personnel injuries can be avoided, the circuit of the signal conversion module is convenient to debug and modify, the most habitual processing signals can be realized and obtained only by modifying the reference circuit parameters of the signal conversion module, and the device can be realized more simply and directly.

Description

A kind of dryer clothing humidity detector

Technical field

The utility model relates to a kind of device of collection and processing of sensor signal, detailed is a kind of dryer clothing humidity detector that is applied to, behind the treated one-tenth low-voltage signal of detected high-voltage signal, be conveyed into CPU again, thereby improve the accuracy of running, also can realize isolation processing, improve security of products high-voltage signal.

Background technology

For automatic washing machine popular on the market, have dry clothes drying function and be popularizing slowly, and for resting on the moisture content on the clothing, as long as suitable, the draughty words of temperature, the clothing of being done can realize promptly dried be effect.

At present, at the functions/drying aspect the dryer mainly is the humidity of utilizing on the detecting head detection clothing, when wet wash touches detecting head, detecting head outputs signal to processor, again by the running of processor control heating wire, blower fan, utilizes the hot blast that produces according to predetermined ventilation shaft, blow to wet wash by the hot blast of discharging, when the rotation that cooperates drum part the clothing upset is rolled, make in rotating process, to cooperate described hot blast, finally clothing is dried up.Concerning detecting head, the life-span weak point is one of its shortcoming, uses repeatedly just to have aging phenomenon, and, transition along with the time, detecting head makes its surperficial deposition dirt, in addition easily through the immersion of water, soap, detecting head is owing to be charged work, therefore, leaky is easier to take place, and this is breakneck to domestic. applications.

In addition, for omnibearing detection, the too much detecting head that is provided with, the problem that cost and distributed circuit difficulty can occur, and too small detecting head quantity then can not detect the humidity of clothing, realize intact detected state, simultaneously, the numerical value that detecting head detected floats bigger, for controlling party wears difficulty.

Summary of the invention

The purpose of this utility model is in order to solve the problem of above-mentioned existence, the humidity of clothing to be carried out context of detection, provide a kind of comprehensive, dryer Humidity Detection system.

The utility model is taked isolation method, makes behind the treated one-tenth low-voltage signal of high-voltage signal, directly imports CPU again, thereby improves accuracy, and the isolation processing to high-voltage signal has guaranteed security of products.

Therefore, the present invention includes: comprise an insulating power supply modular converter, one gauging ring module, one signal conversion module, one signal isolation module, one signal processing module, wherein, described insulating power supply modular converter is to be electrically connected and to be powered at signal conversion module, the signal isolation module, gauging ring module and signal processing module, described gauging ring module is the multi-faceted detection metal dots of annular multiconductor, the cavity of this gauging ring module and clothing dryer is formed circular netted container cavity, described signal conversion module is to change with shaping and produce the module of one group of controllable signal according to the detected signal of gauging ring module, described signal isolation module is the module of the signal that signal conversion module is changed and shaping is come out being carried out isolation processing, during this time, have the clothing of humidity and survey metal dots formation loop, with the electric shock phenomenon of avoiding clothing to take out and put into.

Wherein, described insulating power supply modular converter is that civil power is converted into power module with the 15V low-voltage dc power supply of mains isolation.

Described signal conversion module 1 also comprises first adjustable resistance and second adjustable resistance that all can be used for regulating to the detectable signal of gauging ring module, regulate corresponding resistance value by first adjustable resistance and second adjustable resistance, the signal magnitude that raising or reduction detect is promptly regulated the detectable signal to the gauging ring module.

The beneficial effects of the utility model are by behind the treated one-tenth low-voltage signal of detected high-voltage signal, be conveyed into CPU again, thereby improve the accuracy of running, also can realize isolation processing to high-voltage signal, improve security of products, its control circuit is simple, realizes easily, and production and buying are brought great convenience, secondly, its signal and primary processor are carried out isolation processing, do not exist the electric leakage incident of hurting sb.'s feelings to take place, and the signal conversion module circuit debugging is convenient with change, as long as its reference circuit parameter of change, just can realize and reach the processing signals of oneself being accustomed to most, implement simpler, more direct.

Description of drawings

Fig. 1 is a shaped as frame signal schematic diagram of the present utility model.

Fig. 2 is a circuit diagram of the present utility model.

The specific embodiment

See also the preferred embodiment of the present utility model that goes out shown in Figure 1, it comprises a gauging ring module 3, one signal conversion module 1, one signal isolation module 4, one signal processing module 5, one insulating power supply modular converter 2, wherein, described insulating power supply modular converter 2 is that civil power is converted into low-voltage dc power supply with mains isolation, comprise DC15V and DC5V power supply, the then electric gauging ring module 3 that supplies power to of this DC15V, signal conversion module 1, signal isolation module 4 and signal processing module 5, during this time, signal isolation module 4 is an opto-coupler chip, the pin of this opto-coupler chip connects situation: the 5th pin A5 is connected with signal processing module 5, the 4th pin A4 ground connection, the first pin A1 connects AC power ACC and the 2nd pin A2 is connected with signal conversion module 1, and this opto-coupler chip specifically can be the PC817 chip; And include process chip U4 in the signal conversion module 1, and it is 555 model chips, and it only need be that general technical staff writes conventional signal handler and gets final product in concrete enforcement, and the circuit connecting mode of its each pin (B1-B8) is seen shown in Figure 2.Described gauging ring module 3 connects external sniffer, be to make to survey the usefulness that produces signal, and this signal majority is a high-frequency signal, this high-frequency signal transmission is to described signal conversion module 1, high-frequency signal regulate be lowered into low frequency signal after, again this low frequency signal is transferred to signal isolation module 4 and further isolate the extra band electrical phenomena, the leaky that promptly is commonly called as, this low frequency signal finally transfers to signal processing module 5 and makes Signal Processing.

As shown in Figure 2, and further carefully state the principle of each parts, the power supply power supply that described insulating power supply modular converter 2 is VCC interfaces connects end, also not shown among the figure, described gauging ring module 3 is the multi-faceted detection hard contacts of a kind of annular multiconductor, can form circular netted container cavity with the cavity of clothing dryer, and to the clothing humidity value in the dryer container sample out a succession of irregular signal and discontinuous resistance value, described signal conversion module 1 is to change and shaping according to gauging ring module 3 detected signals, just a succession of irregular signal of gauging ring module 3 is converted to the continuous square-wave signal of rule, thereby produce one group of controlled and easy to handle signal, described signal isolation module 4 is that the signal that signal conversion module 1 is changed and shaping is come out is carried out isolation processing, it prevents leaky, during this time, have the clothing of humidity and survey metal dots and form the loop, to avoid clothing to take out and electric shock phenomenon when putting into.

And, described signal conversion module 1 also comprises first adjustable resistance 11 and second adjustable resistance 12 that all can be used for regulating to the detectable signal of gauging ring module, regulate corresponding resistance value by first adjustable resistance 11 and second adjustable resistance 12, the signal magnitude that raising or reduction detect is promptly regulated the detectable signal to gauging ring module 3.

According to the above description, and in conjunction with the accompanying drawings as better embodiment of the present utility model, right, other equivalent embodiment of the present utility model is not limited thereto, understand by described concrete enforcement, above-mentioned embodiment has disclosed concrete function of the present utility model and architectural characteristic.

Claims

1. dryer clothing humidity detector, it includes an insulating power supply modular converter (2), one gauging ring module (3), one signal conversion module (1), one signal isolation module (4), one signal processing module (5), wherein, described insulating power supply modular converter (2) is to be electrically connected and to be powered at signal conversion module (1), signal isolation module (4), gauging ring module (3) and signal processing module (5), described gauging ring module (3) is the multi-faceted detection metal dots of annular multiconductor, this gauging ring module (3) is formed circular netted container cavity with the cavity of clothing dryer, described signal conversion module (4) is to change with shaping and produce the module of one group of controllable signal according to the detected signal of gauging ring module (3), and described signal isolation module (4) is the module of the signal that signal conversion module (1) conversion and shaping are come out being carried out isolation processing.

2. dryer clothing humidity detector according to claim 1 is characterized in that: described insulating power supply modular converter (2) is that civil power is converted into power module with the 15V low-voltage dc power supply of mains isolation.

3. dryer clothing humidity detector according to claim 1 is characterized in that: described signal conversion module (1) also comprises first adjustable resistance (11) and second adjustable resistance (12) that all can be used for regulating to the detectable signal of gauging ring module (3).