CN211406293U

CN211406293U - Novel electric blanket controller

Info

Publication number: CN211406293U
Application number: CN201921645635.1U
Authority: CN
Inventors: 朱霜琴; 周琳
Original assignee: Individual
Current assignee: Individual
Priority date: 2019-09-29
Filing date: 2019-09-29
Publication date: 2020-09-01
Anticipated expiration: 2029-09-29

Abstract

A novel electric blanket controller mainly comprises a singlechip, a communication module, a temperature sensor interface, an indicator light, a switch control device and the like; the intelligent control of the singlechip is combined with the access of the communication module to the internet, so that the electric blanket controller of the utility model can be operated by a mobile phone, and has more functions and more friendly user interface; the working condition of the electric blanket can be remotely checked and controlled through the mobile phone, so that potential safety hazards caused by forgetting to turn off the electric blanket can be avoided; the electric blanket controller of the utility model can control the temperature of the electric blanket to a level of 0.01 ℃, and the use experience is better; the electric blanket controller of the utility model can be matched with other intelligent devices to control the temperature of the electric blanket in a linkage way, thereby improving the use comfort; the electric blanket controller can be automatically optimized and controlled to set through long-time use statistics, and the use safety and the use comfort are further improved. Electric blanket controller has simple structure, and is intelligent, safe, characteristics such as convenient to use have fine user experience, are fit for using widely.

Description

Novel electric blanket controller

Technical Field

The invention belongs to the field of control modules, is particularly applied to electric blankets and similar products, and can be used for controlling intelligent household appliances or other remote control products.

Background

At present, the temperature of most electric blankets is controlled by two levels, namely high level and low level, and the electric blankets are controlled by toggle switches, so that the products keep the old style for decades. With the continuous improvement of the quality of life, the electric blanket which is an economical and practical product with good experience needs to improve the use safety and the convenience and the comfort of use.

Disclosure of Invention

The invention aims to realize convenient control, safety and reliability of an intelligent electric blanket controller.

In order to achieve the purpose, the invention adopts the technical scheme that:

1. the single chip microcomputer is used as a main control logic device of the electric blanket, and all control logics are realized on the single chip microcomputer;

2. the controller is internally provided with a communication module which can be connected to a public network and is connected with the singlechip through a communication port so that the singlechip can communicate with a network side server;

preferably, the single chip microcomputer and the communication module are integrated into a chip or a module to replace a separate single chip microcomputer and a communication module.

3. The singlechip and the communication function module are weak current devices, and DC3.3V is used as a power supply.

Preferably, an isolated power supply is used instead of a resistor-capacitor voltage step-down circuit.

4. The temperature of the electric blanket is adjusted by controlling the on-off state ratio time of the electric blanket through the single chip microcomputer, the temperature is high when the on-time ratio is large, otherwise, the temperature is low, the time ratio is controllable at will, and the output temperature is also adjusted at will.

5. The temperature control of the electric blanket is divided into an open-loop control mechanism and a closed-loop control mechanism, the open-loop control mechanism corresponds to a fixed on-off time proportion, the balance state temperature of the electric blanket at a constant environmental temperature is obtained through testing, and the corresponding relation between the switch proportion and the output temperature is obtained according to experiments and is used as the basis for the open-loop control of the temperature; the single chip microcomputer obtains the temperature of the electric blanket wiring and the blanket body through the sensor, and controls the electric blanket to cool or heat according to the feedback temperature, and the mode is a closed-loop temperature control mode.

6. The controller circuit is provided with an NTC resistor, the singlechip is provided with an AD interface, and the temperature of the controller and the connected power supply line of the electric blanket are obtained through calculation of the singlechip; the digital temperature sensors are connected in a single bus mode to supplement temperature monitoring of the electric blanket, and relevant data of the temperature sensors are processed by the single chip microcomputer.

7. The singlechip is matched with the auxiliary circuit to carry out zero-crossing detection on the alternating current power supply and is used as a control basis of the conduction angle, the phase at the beginning of the positive half-cycle zero-crossing point is set to be 0 degree, and the phase at the negative half-cycle zero-crossing point is set to be 180 degrees.

8. The single chip microcomputer is internally provided with an RTC function and calculates the current time by itself, and after the controller is connected to a network or a mobile phone, the time of the single chip microcomputer is calibrated by acquiring the time of the server or the time of the mobile phone; the RTC (real time clock) is used for regularly turning on or off the electric blanket and also used for regularly adjusting the temperature of the electric blanket.

9. The system has a readable and writable data and code storage space (a FLASH chip or a singlechip is provided with a storage space), and stores necessary information such as operating parameters.

10. The single chip microcomputer is internally provided with an RTC function, the current time is calculated by itself, and after the single chip microcomputer is connected to a network, the time of the single chip microcomputer is calibrated by acquiring the time of a network side or the time of a mobile phone end;

11. and calculating the temperature curve of the human body in one day according to statistics, calculating temperature values at different times by the single chip microcomputer according to the temperature curve and a set temperature, and controlling the electric blanket to reach the calculated temperature at the corresponding time.

12. The controller obtains the position of the controller through a communication module positioning function, and the position where the controller is located can be customized by a user to be M; the user holds the mobile phone provided with the controller customized APP or the small program, the position of the mobile phone is N, when the distance between the M position and the N position exceeds L and the electric blanket is in a working state, the controller sends information to remind the user to close the electric blanket.

Drawings

Fig. 1 is a block diagram of the structure of the present invention, illustrating the main components of the present invention.

Fig. 2 is a schematic diagram of an embodiment of a switching device (04 in fig. 1) in the structure of the present invention.

Detailed Description

The invention is further described below with reference to the examples.

The structure of the controller is shown in figure 1, wherein AC/DC is a power supply part (01) which mainly provides a direct current working power supply for a control module, and the final output working voltage is direct current 3.3V; in the embodiment, a transformer circuit is matched with a power supply chip to convert power frequency 220VAC into 5V direct current, and then the direct current is converted into 3.3V output by an LDO chip (AMS 1117-3.3 is used in the embodiment) to be used as a communication module and a monolithic power supply. In the embodiment, an ESP-8266WIFI module is adopted to realize functions of a communication module (02) and a single chip microcomputer (03), and exists as a whole, and a 32M FLASH memory chip is arranged in the ESP-8266 module and used for storing program codes and operating parameters (the single chip microcomputer refers to the used ESP-8266 module in particular in the embodiment). The switch device (04) comprises a photoelectric device for isolating high voltage and low voltage, and is shown in figure 2, the U10 is an optical coupling switch, and the IO output Ctrl1 of the single chip microcomputer is isolated from a controlled silicon D10 for controlling the switch of an electric blanket. An NTC resistor is used on the control panel, and the temperature detection is realized by utilizing the AD conversion capability of the singlechip; the object of the NTC temperature detection is an electric blanket power supply line, and when the electric blanket controller is installed, the electric blanket power supply line is closely fixed beside the NTC resistor. A single-wire bus is led out from a circuit board of the controller and used for driving a digital temperature sensor, in the embodiment, a DS18B20 type digital sensor is adopted and arranged at a proper position of the electric blanket, and the temperature condition of the electric blanket is more accurately monitored through the distributed temperature sensors. The control keys are 3 keys which are respectively '+', '-', and 'confirmed', the key states are detected by the singlechip, short press, long press and combination keys can be detected, and different functions are realized through software. Utilize the IO mouth output PWM signal control pilot lamp of singlechip, the pilot lamp is RGB3 passageway colored LED, and different PWM duty cycle corresponds different luminance, obtains the RGB three-colour combination of arbitrary luminance to mix into different colours, express various states with different colours and darkness and change. The controller can be provided with a small-size display screen, and the single chip microcomputer sends contents to be displayed to the display screen through the two-wire IIC interface. The controller is provided with two paths of electric blanket output interfaces, the on-off state of the controller is controlled by different IO ports of the single chip microcomputer, namely, the two paths of output power can be independently controlled, and the controller is used for zone temperature control of the electric blanket.

In the aspect of software, the single chip microcomputer sets WIFI into an AP and STATION mixed mode, the AP mode can provide an access point under the condition of no router, the connection of devices such as a mobile phone and the like is facilitated in the initialization process, relevant setting instructions sent by the mobile phone are received after the connection, and the connection parameters of the STATION mode are configured according to the obtained information. The AP mode set by the singlechip can exist for a long time and can also be closed after normal work so as to reduce power consumption, and the AP mode is controlled by a user. The SSID of the WIFI channel established by the AP is divided into an identification code A and a feature code B, wherein the identification code A is known and is used for searching signals by mobile phone application software, and the feature code B is a unique identifier, so that different controllers generate non-repeated SSIDs; the access authentication mode of the appointed WIFI is WPA, and the password is C, so that access of irrelevant equipment is prevented. And after the mobile phone is accessed to the WIFI hotspot, communication is carried out according to a predefined communication protocol. The controller can work in two working modes of point-to-point and server, and the two working modes can exist simultaneously or run independently; under the condition of a working mode of the server, the control module and the cloud server keep a communication link, acquire information such as current time and the like through the server and report information such as the state of the electric blanket controller to the server at regular time; and in a point-to-point working mode, standard clock information is provided by the mobile phone, and the electric blanket controller and mobile phone application software perform direct connection information interaction.

The controller can regularly update the working state of the controller to the management server in the using process; when the controller is used for the first time, in the process of matching with the mobile phone, the controller acquires and stores the position of the controller through network positioning or mobile phone positioning; the working state of the controller can be synchronously obtained under the condition of software networking of a user mobile phone end; when the mobile phone of the user leaves the range of the controller, if the electric blanket is still in the opening state, the mobile phone end application software can remind the user to close the electric blanket in time.

The capacity of a flash chip built in the module is 32Mbit, the module stores running software codes, also stores equipment information including WIFI (wireless fidelity) routes, server addresses, terminal MAC (media access control) addresses and the like, and also stores controller running parameters such as timing starting and closing parameters, an electric blanket temperature and time corresponding list and the like.

The single chip microcomputer of the controller sets an RTC (real time clock) through software, and after the single chip microcomputer is connected to a network or a mobile phone, the single chip microcomputer can inquire the current time of the server or the mobile phone and accordingly calibrate the time of the single chip microcomputer. When the electric blanket is started, the working temperature of the electric blanket can be adjusted according to the change of the clock. The body temperature of a human body is normally lower at 2-5 o 'clock in the morning, the body temperature is highest at 5-7 o' clock in the afternoon, the body temperatures of male and female also have difference, a plurality of electric blanket temperature control curves are generated and stored as templates according to the statistically known body temperature curve serving as a reference, and the control curves are preset in the electric blanket controller, the mobile phone application software and the server platform for the user to select for use. In the algorithm for generating the electric blanket temperature control curve, the control temperature and the body temperature are in a direct proportional relation. When the mobile phone is connected with an intelligent bracelet and can monitor the sleep quality of a human body, the application software at the mobile phone end reads related data, counts the influence of different temperature settings and adjustments on the sleep quality, finally determines an ideal temperature adjustment curve (corresponding relation between the working temperature of the electric blanket and time), stores the ideal temperature adjustment curve as a private working parameter of the user, and sends the data to the electric blanket controller to be used as an operating parameter. The working temperature of the electric blanket adjusted by the user is a macroscopic value, and when the temperature changes, the controller can automatically calculate set values at different times, and the set values are not necessarily identical to the set temperature.

After adopting above-mentioned technical scheme, compare current electric blanket controller's advantage as follows:

1. under the condition of keeping the keys of the controller and concise indication, most of operations are finished on the mobile phone by connecting the mobile phone with the controller, and the mobile phone has more functions and better user interface.

2. The temperature gear of the existing common controller is limited, fine adjustment cannot be achieved, the control can be freely achieved by adopting a single chip microcomputer control mode under the condition that working parameters are set on a mobile phone interface, and the control precision can reach the level of 0.01 ℃.

3. The working condition of the electric blanket can be remotely checked and controlled through the mobile phone, and potential safety hazards caused by forgetting to turn off the electric blanket can be avoided.

4. The temperature of the electric blanket can be controlled in a linkage manner by matching with other intelligent equipment, so that the use comfort is improved.

5. Through long-time use statistics, automatic optimization control is set, and use safety and comfortableness are improved.

6. The controller adopting a remote control mode is convenient to integrate with the electric blanket, is convenient for product wiring and is convenient to hide the controller.

The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose thereof is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All equivalent changes and modifications made according to the spirit of the present invention should be covered within the protection scope of the present invention.

Claims

1. A novel electric blanket controller characterized by: the novel electric blanket controller comprises a single chip microcomputer, a communication module, a temperature sensor interface, an indicator light and a switch control device; the temperature sensor is matched with an embedded program of a single chip microcomputer for use; the logic of the electric blanket is controlled by a single chip microcomputer, the single chip microcomputer can automatically correspond to preset time and temperature, and the time and temperature corresponding relation is used as an operation parameter and is automatically adjusted by calculating user feedback and using conditions through a program in the using process; the controller controls the temperature of the electric blanket in an open-loop control mode, and meanwhile, closed-loop control is carried out by detecting the temperature of the heating device.

2. A novel electric blanket controller as claimed in claim 1 wherein: the controller is connected to a network in a wireless mode, is communicated with mobile phone application software, and can set working parameters of the electric blanket through the application software; different users can store different working parameters and automatically set the electric blanket in a differentiated way without additional operation when the electric blanket is started; the working parameters mainly comprise the on-off time of the electric blanket and a corresponding relation list of the time and the temperature; the software upgrading can be carried out by the singlechip program of the controller through a mobile phone or a network.

3. A novel electric blanket controller as claimed in claim 2, wherein: the corresponding relation between the time and the temperature is firstly selected by a user in application software, the specific corresponding relation of the user is automatically calculated and used according to the adjustment and use habits of the user in the subsequent use, and simultaneously, the data is stored in a mobile phone or a server.

4. A novel electric blanket controller as claimed in claim 1 wherein: the temperature of the controller is adjusted by controlling the on-off state of the switch control device through a single chip microcomputer; the frequency of controlling on-off is variable, and when the control frequency is more than 50hz, the commercial power is controlled at safe voltage by controlling the conduction angle and matching with the energy storage device to maintain the work of the electric blanket.

5. The novel electric blanket controller of claim 4, wherein: the controller circuit can detect the zero crossing point of the alternating current, and the single chip microcomputer control circuit can control the single chip microcomputer control circuit to start to supply power to the electric blanket only in the positive half period or only in the negative half period of the alternating current.

6. A novel electric blanket controller as claimed in claim 1 wherein: the controller uses 3 paths of PWM pulse signals to control LEDs integrating 3 colors of red, green and blue to display different colors, and the different colors are used for indicating different work state and set different parameters of the electric blanket controller.

7. A novel electric blanket controller as claimed in claim 1 wherein: the controller has a storage function, can store the current parameter settings of the electric blanket controller, and is automatically called when the electric blanket controller is used next time.

8. A novel electric blanket controller as claimed in claim 1 wherein: the controller has the capability of self-establishing a wireless hotspot or searching for a hotspot and adding the hotspot, the working state interaction is carried out through local communication, and the electric blanket controller can automatically adjust the working parameters of the electric blanket controller according to the working state fed back by other equipment; the self-established wireless hotspot rule is a combination of an appointed key character string A and a unique identification code B of the wireless module, the wireless hotspot has an access password C, the mobile phone terminal searches for a hotspot containing the character string A, then the known password C is used for accessing the hotspot to establish a communication link D, and the mobile phone software transmits available network information to the electric blanket controller through the link D for accessing and using the communication module.

9. A novel electric blanket controller as claimed in claim 1 wherein: the temperature sensor interface is in a single-wire bus mode and can be connected with a plurality of digital temperature sensors in series.

10. A novel electric blanket controller as claimed in claim 1 wherein: the controller carries out self-positioning through the communication module, or after the user defines the use position of the controller, when the user leaves a use place with a mobile phone, the controller sends alarm information to remind the user to turn off the electric blanket in time.