CN203789583U - Electric blanket with automatic temperature and heating position adjusting function - Google Patents

Abstract

The utility model discloses an automatically adjustable electric heating blanket, which comprises an AC-DC circuit, a relay, a system control unit, a temperature sensor, a pressure sensor, a heating unit, an indicator light, an amplifier, a switch, a mains plug and a resistor. The system control unit receives the signal from the sensor and controls the work of the heating wire. The utility model can realize that the temperature of the bedding is controlled at 25°C-30°C when no one is sleeping, so as to keep the bedding warm; when someone is sleeping, the temperature of the place where the person sleeps is kept at 28°C-33°C, which is more suitable for sleeping. temperature, and change the heating position with the change of human sleeping posture to ensure the comfort of sleep. The utility model can not only reduce the possibility of fire or burning the bed sheet, but also make the user more comfortable, safer and more power-saving.

Description

An electric blanket capable of automatically adjusting temperature and heating position

technical field

The utility model relates to an electric heating appliance, in particular to an electric heating blanket capable of automatically adjusting temperature and heating position.

Background technique

With the improvement of people's living standards, more and more people use electric blankets in winter. The electric blanket can emit heat when it is powered on, which can increase the temperature of the bedding. At the same time, it can dehumidify the bedding in humid weather. It consumes less power and is easy to use. It has become the choice of more and more families in winter.

Most of the existing electric blankets use special soft cable heating elements to weave or sew into the gaps of the electric blanket in the form of snakes, and the heat can be emitted when the electricity is turned on. Generally, different gears are used to adjust the calorific value.

When sleeping, the most comfortable temperature for most people is about 32°C, and it changes slightly with people's age, physical condition and climate change.

There are two problems with ordinary electric blankets currently on the market. First, all the heating units of the electric blanket continue to generate heat after it is turned on. No matter whether someone is sleeping or not, even if it exceeds the optimal sleeping temperature of the human body, it still continues to generate heat. This causes a waste of electric energy, and makes people feel uncomfortable during sleep. It is also easy to cause the bedding to burn out, and even the danger of fire.

Secondly, when the existing electric heating blanket is working, all the positions of the electric heating blanket are heating, and the heating position cannot be accurately controlled, which will cause waste of electric energy and reduce the effective service life of components and electric heating blankets.

Therefore, it is necessary to design a new type of electric blanket that can automatically adjust the temperature and heating position to solve the above problems. At the same time, because many of the users of the electric blanket are old people and children, while realizing the above functions, the operation should not be too complicated. So it is necessary to design a kind of electric blanket with simple operation to facilitate use.

Contents of the invention

In order to solve the above problems, the utility model provides an electric blanket that can automatically adjust the temperature and heating position. When the electric blanket is turned on, the temperature of the bedding is controlled within the range of 25°C-30°C to keep the bedding warm; when someone sleeps, Control the temperature of the bedding at the position of the person within the range of 28°C-33°C, and change the heating position according to the change of the sleeping posture of the human body, so that the temperature at the position of the human body is always stable at around the optimum sleeping temperature. While realizing precise control of temperature and heating position, the operation of the electric blanket is still simple and convenient.

The technical solution adopted by the utility model to solve the technical problem is: an electric blanket that can automatically adjust the temperature and heating position, including AC-DC circuit, relay, system control unit, temperature sensor, pressure sensor, heating unit, indicator light , amplifier, switch, mains plug, resistor; AC-DC circuit is electrically connected to the mains plug; the system control unit is electrically connected to the relay, and the relay is electrically connected to the heating unit; the system control unit is electrically connected to the indicator light; the temperature sensor is connected to the system The control unit is electrically connected; the pressure sensor is electrically connected with the system control unit through the amplifier; the switch is electrically connected with the AC-DC circuit.

Indicator light: Shows whether the electric blanket is in working condition.

System control unit: Control the working condition of the relay according to the data collected by the temperature sensor and the pressure sensor, thereby changing the working state of the heating unit.

Temperature sensor: detects temperature.

Pressure sensor: detects pressure.

Amplifier: The signal collected by the pressure sensor is amplified and processed by the system control unit.

Switch: main circuit switch.

The beneficial effects of the utility model are: the heating position and heating temperature of the electric blanket can be precisely controlled; after the electric blanket is turned on, the bedding temperature can be controlled at 25°C-30°C when no one is sleeping, and the bedding can be kept warm; When someone is sleeping, the heating position of the electric blanket is changed with the change of the sleeping posture of the human body, so that the temperature of the sleeping area is always stable at 28°C-33°C. The utility model can control the temperature, not only can reduce the possibility of burning the bed sheet or fire, but also can make the user more comfortable and safer, and can save more electricity at the same time, and the electric blanket is more convenient to use.

Description of drawings

The utility model is further described below in conjunction with the structural schematic diagram and the specific circuit diagram.

Fig. 1 is a schematic diagram of an embodiment of the present utility model.

Fig. 2 is a schematic diagram of the circuit part of the embodiment of the utility model.

Fig. 3 is a partial circuit schematic diagram of the embodiment of the utility model.

In the figure 1. Heating unit, 2. Pressure sensor, 3. Temperature sensor, 4. System control unit.

Detailed ways

In Figure 1, the system control unit is located outside the electric blanket to facilitate user operation; the electric blanket is approximately divided into multiple areas, each area has a heating unit, pressure sensor and temperature sensor; multiple pressure sensors and temperature sensors are evenly distributed In the electric blanket, the collected data is sent to the system control unit for processing; the system control unit changes the working state of the relay to control whether the heating unit works.

In Figure 2, the AC-DC circuit turns 220V AC into 5V DC; the system control unit is mainly a single-chip microcomputer STC90C58AD, packaged in SOP-40; the indicator light uses ordinary low-power light-emitting diodes; the relay uses JQC-3f.

In Figure 3, the temperature sensor is DS18B20, packaged in TO-92; the pressure sensor is FlexiForce A201-100, and the signal is input to the system control unit through the amplifier MCP6001. When the output voltage of the pressure sensor exceeds the set value, the output of the amplifier is low. Level (0V); when the output voltage of the pressure sensor is less than the set value, the output of the amplifier is high level.

The light of the indicator light D1 indicates that the electric blanket is in working condition.

Switch S1 controls whether to supply power to the microcontroller.

The specific working method is as follows: when the switch S1 is turned on, the electric blanket enters the working state. The AC-DC circuit converts 220V AC into 5V DC for use in the circuit, and the indicator light D1 lights up; at this time, the temperature of the quilt is low, and the temperature sensor detects that the temperature at this time is lower than the set minimum heat preservation temperature of 25°C, so the control relay is closed , to make the resistance wires RH1, RH2, RH3, RH4 of the heating unit generate heat. When the temperature of the bedding reaches 30°C, the single-chip microcomputer control relay is disconnected, and the heating unit in this area stops working, and then the bedding is stabilized within the range of 25°C-30°C .

When a person sleeps on an electric blanket, the pressure sensor detects the position of the pressure, and first detects the temperature in the area. If the temperature in the area is lower than 28°C, the system control unit controls the relay to close, and the nearby heating unit generates heat. When the temperature sensor detects that the temperature has reached 33°C, the control relay is disconnected, and the nearby heating units stop working. As the person's sleeping posture changes, the pressure sensor detects the position of the person on the electric blanket, and then controls the corresponding electric heating wire to generate heat, so that the temperature of the sleeping area is always maintained at 28°C-33°C.

By the above method, the bedding is kept warm when no one is sleeping, and the temperature is near the most suitable temperature for human sleep when someone is sleeping.

The above-mentioned embodiments only illustrate the principles and effects of the present utility model, as well as some embodiments. For those of ordinary skill in the art, without departing from the inventive concept of the present utility model, some deformations and modifications can be made. Improvements all belong to the protection scope of the present utility model. the

Claims (1)

1. An electric blanket that can automatically adjust the temperature and heating position, which is characterized by: including AC-DC circuit, relay, system control unit, temperature sensor, pressure sensor, heating unit, indicator light, amplifier, switch, mains plug , resistance; AC-DC circuit is electrically connected to the mains plug; the system control unit is electrically connected to the relay, and the relay is electrically connected to the heating unit; the system control unit is electrically connected to the indicator light; the temperature sensor is electrically connected to the system control unit; The amplifier is electrically connected with the system control unit; the switch is electrically connected with the AC-DC circuit.