CN213874706U

CN213874706U - Temperature controller

Info

Publication number: CN213874706U
Application number: CN202022692715.1U
Authority: CN
Inventors: 李雄; 马静; 沈炎鑫
Original assignee: Xiamen Beca Energy Saving Technology Co ltd
Current assignee: Xiamen Beca Energy Saving Technology Co ltd
Priority date: 2020-11-19
Filing date: 2020-11-19
Publication date: 2021-08-03
Anticipated expiration: 2030-11-19

Abstract

The utility model discloses a temperature controller, it includes: the system comprises a power supply module, a temperature measurement module, a meteorological information acquisition module, a processor and a display screen; the power supply module comprises a power supply conversion chip; the temperature measurement module is used for measuring room temperature and comprises a standard resistor, a thermistor and a temperature measurement capacitor; the weather information acquisition module comprises an RS485 communication chip which is communicated with a weather server through an RS485 protocol to acquire weather information; the processor is powered by the power supply module, is internally provided with a timing unit and is provided with a room temperature information interface and a meteorological information interface; the display screen is powered by the power supply module and is in signal connection with the processor to display the room temperature information and the meteorological information. The utility model discloses a temperature controller can acquire meteorological information and with convenience of customers' trip, and does not need the analog-to-digital conversion module can realize the temperature measurement, has reduced the cost of temperature controller.

Description

Temperature controller

Technical Field

The utility model relates to a temperature controller technical field especially relates to a temperature controller.

Background

Temperature controllers in the current market can only measure indoor temperature generally, cannot acquire local meteorological information such as weather, humidity, ultraviolet rays, wind power information and the like, and are not intelligent and visual enough.

In addition, the temperature measuring method of the conventional temperature controller is to sample the thermistor by a voltage dividing method and then obtain the temperature to be measured by looking up a table.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome an at least defect or problem that exists among the background art, provide a temperature controller, it can acquire meteorological information and go on a journey with convenience of customers, and does not need the analog-to-digital conversion module can realize the temperature measurement, has reduced the cost of temperature controller.

In order to achieve the above purpose, the technical scheme of the utility model is as follows: a thermostat, comprising: the system comprises a power supply module, a temperature measurement module, a meteorological information acquisition module, a processor and a display screen; the power supply module comprises a power supply conversion chip and is used for converting an external power supply into an internal power supply; the temperature measurement module is used for measuring room temperature and comprises a standard resistor, a thermistor and a temperature measurement capacitor; one ends of the standard resistor and the thermistor are connected and then are connected to one end of the temperature measuring capacitor, and the other end of the temperature measuring capacitor is grounded; the weather information acquisition module comprises an RS485 communication chip which is communicated with a weather server through an RS485 protocol to acquire weather information; the weather information comprises weather information, wind speed information, humidity information and ultraviolet information; the processor is powered by the power supply module, is internally provided with a timing unit and is provided with a room temperature information interface and a meteorological information interface; the room temperature information interface comprises a first I/O port, a second I/O port and a third I/O port, the first I/O port and the second I/O port are respectively connected with one ends, far away from the temperature measuring capacitor, of the standard resistor and the thermistor, the third I/O port is connected with a common point of the temperature measuring capacitor, the standard resistor and the thermistor, and the timing unit is used for recording level turnover time of the third I/O port; the weather information interface is in signal connection with the RS485 communication chip to acquire the weather information; the display screen is powered by the power supply module and is in signal connection with the processor to display the room temperature information and the meteorological information.

Further, the processor is a single chip microcomputer with the model of EM78P 468.

Further, the weather information interface is a 44 th pin, a 45 th pin and a 46 th pin of the processor; the model of the RS485 communication chip is SP458, and the 1 st pin, the 2 nd pin, the 3 rd pin and the 4 th pin of the RS485 communication chip are respectively connected with the 46 th pin, the 45 th pin and the 44 th pin of the processor.

Furthermore, the RS485 communication chip is powered by the power supply module, and the 8 th pin of the RS485 communication chip is connected with the output end of the power supply conversion chip.

Furthermore, the 6 th pin and the 7 th pin of the RS485 communication chip are connected with the weather server through RS485 signal lines to acquire the weather information.

Further, the 38 th pin, the 39 th pin and the 40 th pin of the processor respectively constitute the first I/O port, the second I/O port and the third I/O port.

Further, the power conversion chip is a voltage reduction and regulation chip with the model number of 78L05, and the output end of the power conversion chip is connected with a VDD pin of the processor.

Compared with the prior art, the utility model discloses a temperature controller product adopts the display screen to receive and to user show room temperature information and weather information including weather information, wind speed information, humidity information, ultraviolet ray information for the user can pass through the utility model discloses a temperature controller obtains more information, has improved the intelligent and visual degree of temperature controller.

Furthermore, the utility model discloses a temperature measurement module sends level signal through the treater and makes standard resistance and thermistor found RC delay circuit respectively to measure RC delay circuit's level upset time through the treater, thereby can obtain the resistance ratio through the time ratio, therefore this temperature measurement module can be suitable for more treater, need not to possess the analog-to-digital conversion module and just can realize the temperature measurement, has reduced the cost of temperature controller.

Drawings

In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings required to be used in the description of the embodiments are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a schematic view of a display interface of a temperature controller according to an embodiment of the present invention;

fig. 2 is a circuit diagram of a power conversion module according to an embodiment of the present invention;

FIG. 3 is a circuit diagram of a temperature measurement module according to an embodiment of the present invention;

fig. 4 is a circuit diagram of a meteorological information acquisition module according to an embodiment of the present invention;

fig. 5 is a schematic diagram of a connection of a processor according to an embodiment of the present invention.

Detailed Description

The technical solution in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention. It is obvious that the described embodiments are preferred embodiments of the invention and should not be considered as excluding other embodiments. Based on the embodiment of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative work belong to the protection scope of the present invention.

In the claims, the specification and the drawings, unless otherwise expressly limited, the terms "first," "second," or "third," etc. are used for distinguishing between different elements and not for describing a particular sequence.

In the claims, the specification and the drawings, the terms "including", "comprising" and variations thereof, if used, are intended to be inclusive and not limiting.

Referring to fig. 1-5, an embodiment of the present invention provides a temperature controller, which includes: the device comprises a power module, a temperature measurement module, a meteorological information acquisition module, a processor and a display screen.

As shown in fig. 2, the power module includes a power conversion chip and is used to convert an external power into an internal power. In this embodiment, the power conversion chip is a voltage reduction and regulation chip with a model number of 78L05, a 1 st pin of the power conversion chip is an input terminal and is connected to an external power supply VDD, a 2 nd pin of the power conversion chip is a ground terminal and is grounded, and a 3 rd pin of the power conversion chip outputs an internal power supply VCC of the temperature controller through a diode.

As shown in FIG. 3, the thermometric module is used for measuring room temperature and comprises a standard resistor R5, a thermistor R18 and a thermometric capacitor C13. One ends of the standard resistor R5 and the thermistor R18 are connected and then are commonly connected to one end of the temperature measuring capacitor C13, and the other end of the temperature measuring capacitor C13 is grounded.

As shown in fig. 4, the weather information obtaining module includes an RS485 communication chip, in this embodiment, the model of the RS485 communication chip is SP458, and the 6 th pin and the 7 th pin of the RS485 communication chip are connected to the weather server through RS485 signal lines and by RS485 protocols, so as to communicate with the weather server and obtain the weather information. The weather information comprises weather information, wind speed information, humidity information and ultraviolet information. In addition, the 8 th pin of the RS485 communication chip is also connected with the output end of the power conversion chip so as to be supplied with power by the power module.

As shown in fig. 5, the processor is a single chip microcomputer with a model of EM78P468, and a VDD pin of the processor is connected to an output terminal of the power conversion chip to be supplied with power by the power module. The processor is internally provided with a timing unit and is provided with a room temperature information interface and a meteorological information interface. Specifically, the room temperature information interface comprises a first I/O port, a second I/O port and a third I/O port, the first I/O port and the second I/O port are respectively connected to one end of the standard resistor R5, one end of the thermistor R18 far away from the temperature measurement capacitor C13, and the third I/O port is connected to a common point of the temperature measurement capacitor C13, the standard resistor R5 and the thermistor R18. In an actual structure, the 38 th pin, the 39 th pin and the 40 th pin of the processor respectively constitute the first I/O port, the second I/O port and the third I/O port. The timing unit is used for recording the level turnover time of the third I/O port. The weather information interface is a 46 th pin, a 45 th pin and a 44 th pin of the processor, and is respectively in signal connection with a 1 st pin, a 2 nd pin, a 3 rd pin and a 4 th pin of the RS485 communication chip so as to acquire the weather information.

As shown in fig. 1, the display screen is powered by the power module and is in signal connection with the processor to display the room temperature information and the meteorological information.

Introduce the utility model discloses temperature measurement principle of temperature controller of embodiment:

the processor first sets pin 38 low, then sets pin 38 high, and detects the time T1 when pin 40 goes from low to high. The processor then sets pin 39 low, then sets pin 39 high, and detects the time T2 at which pin 40 transitions from low to high. The resistance value of the thermistor R18 can be calculated according to T2/T1 ═ R5/R18 inside the processor, and the temperature to be measured is obtained by inquiring the NTC database. It can be seen that the processor only needs to have three I/O ports to measure the temperature, and does not need to perform analog-to-digital conversion on the acquired quantity, and the processor does not need to have an analog-to-digital conversion module.

To sum up, the utility model discloses temperature controller product adopts the display screen to receive and to show room temperature information and weather information including weather information, wind speed information, humidity information, ultraviolet information to the user for the user can pass through the utility model discloses a temperature controller obtains more information, has improved the intelligent and visual degree of temperature controller. Furthermore, the utility model discloses the temperature measurement module sends level signal through the treater and makes standard resistance and thermistor found RC delay circuit respectively to level upset time through the treater measurement RC delay circuit, thereby can obtain the resistance ratio through the time ratio, therefore this temperature measurement module can be suitable for more treater, need not to possess the analog-to-digital conversion module and just can realize the temperature measurement, has reduced the cost of temperature controller.

The description of the above specification and examples is intended to illustrate the scope of the invention, but should not be construed as limiting the scope of the invention. Modifications, equivalents and other improvements which may be made to the embodiments of the invention or to some of the technical features thereof by a person of ordinary skill in the art through logical analysis, reasoning or limited experimentation in light of the above teachings of the invention or the above embodiments are intended to be included within the scope of the invention.

Claims

1. A temperature controller, comprising: the system comprises a power supply module, a temperature measurement module, a meteorological information acquisition module, a processor and a display screen;

the power supply module comprises a power supply conversion chip and is used for converting an external power supply into an internal power supply;

the temperature measurement module is used for measuring room temperature and comprises a standard resistor, a thermistor and a temperature measurement capacitor; one ends of the standard resistor and the thermistor are connected and then are connected to one end of the temperature measuring capacitor, and the other end of the temperature measuring capacitor is grounded;

the weather information acquisition module comprises an RS485 communication chip which is communicated with a weather server through an RS485 protocol to acquire weather information; the weather information comprises weather information, wind speed information, humidity information and ultraviolet information;

the processor is powered by the power supply module, is internally provided with a timing unit and is provided with a room temperature information interface and a meteorological information interface; the room temperature information interface comprises a first I/O port, a second I/O port and a third I/O port, the first I/O port and the second I/O port are respectively connected with one ends, far away from the temperature measuring capacitor, of the standard resistor and the thermistor, the third I/O port is connected with a common point of the temperature measuring capacitor, the standard resistor and the thermistor, and the timing unit is used for recording level turnover time of the third I/O port; the weather information interface is in signal connection with the RS485 communication chip to acquire the weather information;

the display screen is powered by the power supply module and is in signal connection with the processor to display the room temperature information and the meteorological information.

2. A thermostat according to claim 1, wherein: the processor is a single chip microcomputer with the model of EM78P 468.

3. A thermostat according to claim 2, wherein: the weather information interface is a 44 th pin, a 45 th pin and a 46 th pin of the processor;

the model of the RS485 communication chip is SP458, and the 1 st pin, the 2 nd pin, the 3 rd pin and the 4 th pin of the RS485 communication chip are respectively connected with the 46 th pin, the 45 th pin and the 44 th pin of the processor.

4. A thermostat according to claim 3, wherein: the RS485 communication chip is powered by the power supply module, and the 8 th pin of the RS485 communication chip is connected with the output end of the power supply conversion chip.

5. A thermostat according to claim 3, wherein: and the 6 th pin and the 7 th pin of the RS485 communication chip are connected with the weather server through RS485 signal lines so as to acquire the weather information.

6. A thermostat according to claim 2, wherein: the 38 th pin, the 39 th pin and the 40 th pin of the processor respectively form the first I/O port, the second I/O port and the third I/O port.

7. A thermostat according to claim 2, wherein: the power supply conversion chip is a voltage reduction and stabilization chip with the model number of 78L05, and the output end of the power supply conversion chip is connected with a VDD pin of the processor.