1.1 Introduction
In most cities in southern China, the rain is abundant, and the rainy weather makes people often “dry†clothes and shoes. Especially in the rainy season, the clothes that are left in the cupboard are often wet, and it is very inconvenient to handle. The damp clothing is also unfavorable for the health of the person. Whenever it comes to temporary use, it is even more helpless. As shown in Figures 1 and 2, it is a situation that people often encounter in their lives.
Figure 1 The moldy corner of the closet
1.2 Project Background / Motivation
At present, drying equipment on the market has dryers, such as dry shoes, shoe dryers, clothes dryers, etc., the principle of which is the use of electrothermal effect. However, these dryers have a single function, and can not solve the problem of dampness at home. The main problems are as follows: 1) Inconvenient operation, such as not being able to switch regularly, not adjusting temperature, etc.; 2) There is a safety hazard, no overheating , Over-current protection function; 3) High energy consumption, single working mode, use has great limitations, and can not automatically stop heating or selective heating.
The design purpose and basic idea of ​​this project is to use the embedded system technology, using a single-chip microcomputer, temperature and humidity sensor, over-current protection circuit, etc. to design a new multi-functional smart home drying system to achieve intelligent drying of the home, its working status The working mode realizes real-time control and automatic conversion, and can realize remote monitoring and control of the user through the wireless communication module, thereby solving a series of problems brought by the dampness of the home environment in the south, and the system involved is innovative and scientific. , practicality and safety, low cost, cater to the needs of most families, and has broad application prospects.
Second, the demand analysis2.1 Functional requirements
This project aims to develop a convenient, safe and intelligent multi-functional intelligent home drying system, which can automatically switch off the power according to the temperature and humidity of the home environment, and can also be combined with manual power-off, and can be used for different types. The home environment provides different suitable temperatures for the purpose of rational use of resources. Therefore, this project intends to adopt over-current overheat protection, temperature and humidity detection and other technologies. On the basis of fully considering the safety performance of the system, we will strive to achieve multi-functional drying of smart homes, and achieve energy saving and consumption reduction, the main functional requirements of the project. Have:
Realize automatic temperature and humidity detection, realize unmanned operation, have wireless communication function, realize communication between system and user through GPRS mode, users can realize remote condition monitoring and control through mobile phone short message;
2. The drying system has high integration degree and small volume, and can be built in any household environment that needs to be dried, such as wall cabinets, shoe cabinets, wardrobes, etc., so that it is convenient and quick to use;
3. With fault diagnosis and self-protection function, when the sensor detects that the working module current voltage is too high, it can realize automatic disconnection for self-protection, ensure safe use of electricity, and avoid fire and other hazards;
4. Increase the function of sterilization and deodorization, bringing a more convenient, comfortable and healthy environment for people's lives.
24 hours mechanical Timer
Instant indicator
Min.setting time:15 minutes. Max.setting timer:24 hours
With hand switch,can be switched to operating and
setting at any time
Instructions:
1. Set program: 1 pin is equivalent to 15 minutes. Determine desired start time and push down pins until desired
off time.
For instance, if you want electrical devices to work from 8:00am to 11:00am and from 13:00pm to 17:00pm, you
just need to put down allthe pins between the three period time.
2. Set the current time: Turning the dial clockwise until the arrow pointing to
current time.
For example,if now it is 8:00 am, please turn the dial and make sure the
arrow point to 8. (See the picture.)
3. Plug the electrical device directly into the timer. Make sure the electrical
device is power-on.
4. Plug the timer into electrical outlet and the electrical device will be work
according to the setting program.
Note: = Normal Ope n = Timing
Make sure the switch on the Timing position. If it
is on the [Normal Open" mode, the electrical device is
always power-on and the timer function no work.
Specifications:
|
Rated Voltage, Current and Power |
As shown on the label |
|
Time Setting Range |
15minutes24hours |
|
Working Temperature |
-10℃?+55℃ |
|
Operation |
Clockwise |
|
Insulation Resistance |
>100M |
|
Inherent Loss |
≤1W |
Application:
1. To enable high-power electric appliances to run automatically at off-peak time if there is different electricity
price according to different periods of time in some areas.
2. To use for electric appliances which need time control, such as water heaters, air conditioners, drinking
fountains, rice cookers, advertising lights and so on.
3. To control the charging time. For example, battery of electric bikes or mobile phones, storage batteries, etc.
4. Occasions which need switch on/off frequently, like interval spray irrigation for flowersand lawn, cyclical
adding oxygen to fish jar, fountains and so on.
5. Home safety precautions and lighting.
Caution:
1.D o not exceed the maximum ratings of the timer.
2.M ust reset the current time after power failure.
3.D o not plug the timer directly into the working electrical appliances.
4.U nless changing the setting, keep the program same every day.
5.D o not disassemble timer by yourself. Professionals service are needed for maintenance.
6.T his item is only for indoor use.
Mechanical Timer, mechanical timer socket, 24hr mechanical timer, mechanical timer plug, mechanical timer adaptor
NINGBO COWELL ELECTRONICS & TECHNOLOGY CO., LTD , https://www.cowellsocket.com