CN203190994U - An automatic temperature and humidity detection device - Google Patents

Abstract

The utility model discloses an automatic temperature and humidity detection device, which comprises a programmable microprocessor, an LCD display module connected with the microprocessor, a keyboard, a nonvolatile random access memory for storing relevant parameters, a program memory for storing control programs, a real-time clock for realizing the date and time function and a repeater, wherein the other end of the repeater is connected with a plurality of temperature and humidity sensors, the device can simultaneously detect the environmental temperature and humidity data of a plurality of detection points, and the detection device stores the temperature and humidity data in an SD card according to set time, thereby being convenient for analyzing and monitoring the environmental temperature and humidity data; when the temperature and humidity detected by the system exceed the safety standard, an alarm signal is automatically sent out, and the safety factor of the environment on occasions with high requirements on the temperature and humidity is improved; the device eliminates the defects of manually acquiring temperature and humidity data and the temperature and humidity detection device, relieves people from heavy data acquisition work, and realizes unattended environment temperature and humidity detection monitoring.

Description

An automatic temperature and humidity detection device

technical field

The utility model relates to a detection device, in particular to a temperature and humidity automatic detection device.

Background technique

For a long time, the collection of environmental temperature and humidity data mainly relies on manual collection and records. At present, the detection devices for environmental temperature and humidity include paper temperature and humidity recorders, LCD digital temperature and humidity meters, and digital temperature and humidity display screens.

The paper temperature and humidity recorder is bulky and cumbersome, and the data must be manually converted into a data form that can be analyzed and processed according to the curve track on the paper tape, which is prone to errors. Neither the LCD digital temperature and humidity meter nor the digital temperature and humidity display has the functions of exceeding the standard alarm and temperature and humidity data storage and recording, and does not have the control ability. A single device of the above equipment can only detect the temperature and humidity data of a single point. When it is necessary to detect the ambient temperature and humidity of multiple points, it is necessary to purchase multiple devices, which increases the cost and is not easy to manage.

Utility model content

The purpose of the utility model is to provide an automatic temperature and humidity detection device capable of multi-point detection, accurate measurement and convenient operation.

In order to achieve the above object, the utility model provides a temperature and humidity automatic detection device, which includes a programmable microprocessor and an LCD display module connected to the microprocessor, a keyboard, and a non-volatile device for storing relevant parameters. Random access memory, program memory for storing control programs, real-time clock and repeater for realizing date and time functions, the other end of the repeater is connected with several temperature and humidity sensors.

The microprocessor is also connected with an SD card for storing data.

The microprocessor is also connected with an indicator light for prompting that the temperature and humidity exceed the standard.

The microprocessor is also connected with an alarm for prompting that the temperature and humidity exceed the standard.

The automatic temperature and humidity detection device also includes a central control box in which an LCD display module, a keyboard, a non-volatile random access memory, a program memory, a real-time clock, a repeater, an SD card, and an indicator light are assembled.

The microprocessor is also connected with an LED display screen.

Compared with the prior art, the utility model adopts a temperature and humidity sensor with high precision and low power consumption, uses the powerful programmable capability of the microprocessor, writes a control program with independent intellectual property rights, and automatically completes multi-point temperature and humidity by the microprocessor. Data roving collection, display, storage and processing, and automatic control; the device can simultaneously detect the environmental temperature and humidity data of multiple detection points, and the detection device will store the temperature and humidity data in the SD card according to the set time, which is convenient for monitoring the environmental temperature and humidity. Humidity data analysis and supervision; when the system detects that the temperature and humidity exceed the safety standard, it will automatically send out an alarm signal to improve the safety factor in places with high environmental temperature and humidity requirements; this device eliminates the shortcomings of manual collection of temperature and humidity data and the above temperature and humidity detection devices, and will Freed from the heavy data collection work, realize unattended environmental temperature and humidity detection and monitoring.

Description of drawings

The utility model will be further described in detail below in conjunction with the embodiments in the accompanying drawings, but it does not constitute any limitation to the utility model.

Fig. 1 is a schematic diagram of the external structure of the automatic temperature and humidity detection device of the present invention.

Fig. 2 is a schematic diagram of the internal principle of the automatic temperature and humidity detection device of the present invention.

In the figure: central control box 10, programmable microprocessor 101, LCD display module 102, keyboard 103, SD card 104, non-volatile random access memory 105, program memory 106, real-time clock 107, indicator light 108, medium Relay 109, temperature and humidity sensor 20, four temperature and humidity sensors 201, 202, 203, 204, LED display screen 30, alarm 40.

Detailed ways

See also shown in Fig. 1, a kind of temperature and humidity automatic detection device of the present utility model comprises central control box 10, several temperature and humidity sensors 20 that are arranged on the outside of central control box 10, LED display screen 30 and the alarm 40 that prompts that temperature and humidity exceed standard And an SD card 104 inserted into the central control box 10 for storing data.

Please refer to shown in Figure 2, the central control box 10 includes a programmable microprocessor 101, is electrically connected with the microprocessor 101 and is arranged on an LCD display module 102, a keyboard 103 outside the central control box 10, and prompts that the temperature and humidity exceed the standard. The indicator light 108, the non-volatile random access memory 105 for storing relevant parameters, the program memory 106 for storing the control program, and the program memory 106 for realizing the date Real time clock 107 and repeater 109 for time function.

In the utility model, four temperature and humidity sensors 201, 202, 203, 204 are preferably arranged at four corners of the actual application site, so that the distribution is even. The utility model preferably has a small keyboard 103 with 20 keys. The LED display screen 30 adopts a large-size specification and is arranged in the center of the actual application site, which is convenient for inspectors to watch. The LCD display module 102 is arranged on the central control box 10 and is used for viewing by operators. The microprocessor 101 is connected to the SD card 104 through an ordinary IO port to realize the data storage function. The microprocessor 101 is connected to the repeater 109 through the sensor bus, and the repeater 109 is respectively connected to four temperature and humidity sensors 201, 202, 203, 204. Because the repeater 109 is used, the temperature and humidity sensors can be connected to the central control The distance of the box reaches 150 meters.

The using method of temperature and humidity automatic detection device of the present utility model is as follows: by writing control program, write in the program memory 106 after being compiled into binary code; Self-control: Microprocessor 101 initializes each hardware module according to the control program code, sets its register value and working mode, so that each hardware module can work in a coordinated manner, can run independently, and can also exchange data when needed; then Load the preset relevant detection parameter values ​​from the non-volatile random access memory 105, including temperature and humidity safety standard values, sampling cycle, storage data cycle, etc., so that the system can operate correctly according to the set mode, and has a large High flexibility; after the parameter loading is completed, the microprocessor 101 reads the time information from the real-time clock 107, and when the time timing reaches the set sampling period, it reads the four channel temperature and humidity sensors 201, 202, The temperature and humidity data of 203 and 204 are compared with the preset temperature and humidity safety standard value. As long as the value of a certain channel exceeds the safety standard, the alarm will be automatically controlled to alarm to remind the operator to supervise the environmental temperature and humidity control; then the microprocessor 101 displays the processed data (comprising the temperature and humidity value and the state exceeding the standard) on the drawing type LCD display module 102 and the large-size LED display screen 30, and the temperature and humidity exceeding the standard state is indicated by the temperature and humidity exceeding the standard Lamp 108 displays, red represents that the temperature and humidity exceed the standard, and green represents that the temperature and humidity are in the normal range; then, the microprocessor 101 judges whether the storage data cycle time is reached according to the time, if the storage data cycle time is reached, then the temperature and humidity data and the current setting The specified parameters are stored in the SD card in the form of a TXT file for subsequent analysis and processing; at last, the microprocessor 101 detects the state of the keyboard 103 interface for parameter input, and if the keyboard 103 has a button pressed, the button processing program is run. In response to the operator's key input, the operator can set the operating parameters of the system through the keyboard 103, including temperature and humidity safety standard values, sampling period, storage data period and so on.

The utility model provides a one-to-multipoint temperature and humidity automatic detection device to eliminate the shortcomings of manual collection of temperature and humidity data in the prior art, free people from heavy data collection work, and realize unattended environmental temperature and humidity Detection and monitoring. The same device can collect environmental temperature and humidity data of four detection points at the same time, display the temperature and humidity data in real time, have automatic temperature and humidity data storage and processing, and automatic alarm function when the temperature and humidity exceed the standard.

Claims (6)

1. humiture automatic detection device, it is characterized in that: comprise programmable microprocessor and the LCD that is connected with microprocessor show module, keyboard, be used for the storage correlation parameter non-volatile RAM, be used for storage control program program storage, be used for realizing real-time clock and the repeater of date time function, the other end of described repeater connects some Temperature Humidity Sensors.

2. humiture automatic detection device as claimed in claim 1 is characterized in that: described microprocessor also is connected with the SD card for the storage data.

3. humiture automatic detection device as claimed in claim 2 is characterized in that: described microprocessor also is connected with the pilot lamp that exceeds standard for the prompting humiture.

4. humiture automatic detection device as claimed in claim 1 or 2 is characterized in that: described microprocessor also is connected with the warning horn that exceeds standard for the prompting humiture.

5. humiture automatic detection device as claimed in claim 2, it is characterized in that: described humiture automatic detection device also comprises central control enclosure, and LCD shows that module, keyboard, non-volatile RAM, program storage, real-time clock, repeater, SD card and pilot lamp all are assembled in this central authorities' control enclosure.

6. humiture automatic detection device as claimed in claim 1, it is characterized in that: described microprocessor also is connected with LED display.

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