CN105737998A - Temperature alarm apparatus - Google Patents

Abstract

The invention discloses a temperature alarm device, which comprises a temperature data acquisition module and an alarm module which are respectively connected to a single-chip microcomputer. The single-chip microcomputer is also connected with a data storage module, a clock module, an LED indicator light and a display module. The data acquisition module adopts DS18B20 sensor, and the LED indicator light consists of three LED light groups of different colors. The single-chip microcomputer simultaneously receives the temperature data acquisition module to collect the actual environmental temperature data and the time information of the clock module in real time, and after being processed by the single-chip microcomputer, it is sent to the display module for display, and the temperature data and time information are stored in the data storage module for relevant personnel to view and analyze. When the collected temperature exceeds the temperature within the specified range, the LED indicator lights will flash in corresponding colors to indicate different temperature states, and the buzzer will work accordingly. The invention has simple structure, is convenient for maintenance and installation, is controlled by a single-chip microcomputer, and has low cost.

Description

A temperature alarm device

technical field

The invention relates to a temperature alarm device, which belongs to the technical field of temperature monitoring.

Background technique

Temperature measurement and related alarm control are commonly used in daily life and production, such as bakery, incubator, freezer and some vegetable greenhouses and other places. For these places, temperature measurement and alarm control are extremely important. At this stage, there are many types of temperature alarm devices with complete functions. Although they can perform real-time and accurate temperature measurement and alarm control, the problems faced by these temperature alarm devices It is inconvenient to overhaul and install, the state of the over-temperature indication is not obvious, the data cannot be saved and transmitted, and the single-chip microcomputer is rarely used for intelligent control, and the cost is relatively high.

Contents of the invention

The technical problem to be solved by the present invention is to provide a temperature alarm device with simple structure, easy maintenance and installation, obvious over-temperature indication status, data storage function, and low cost by using single-chip microcomputer control.

The purpose of the present invention is achieved through the following technical solutions:

A temperature alarm device, comprising a temperature data acquisition module and an alarm module, characterized in that: the temperature data acquisition module and the alarm module are respectively connected to a single-chip microcomputer, and the single-chip microcomputer is also connected with a data storage module, a clock module, an LED indicator light and As for the display module, the single-chip microcomputer adopts the stm32f103vet6 chip, the temperature data acquisition module adopts the DS18B20 sensor, and the LED indicator light is composed of three LED light groups of different colors.

Preferably, the single-chip microcomputer is connected with an interface module, and the interface module adopts a USB interface. The USB interface is easy to use, combined with the processing of the single-chip microcomputer, the data information in the data storage module is transmitted to the device with the USB interface through the USB interface so that relevant personnel can view and analyze it.

The above display module adopts LCD12864 liquid crystal screen. The LCD screen has the performance of low voltage, low power consumption, and stable display and recording. It mainly displays the current temperature data and corresponding time information. When the work exceeds the specified range, it will display the ERROR state.

The LED indicator light is composed of three LED light groups of red, yellow and green colors. Three colors are used to indicate different temperature states. The upper limit value beyond the temperature range set by the single-chip microcomputer flashes red light, and the lower limit value beyond the temperature range set by the single-chip microcomputer flashes yellow light. A green light is displayed.

The alarm adopts a buzzer. The buzzer is adopted, the structure is simple, the maintenance is convenient, and the cost is reduced.

The clock module is composed of DS1302 real-time clock chip. The chip can time the year, month, day, week, hour, minute and second, with high performance and low power consumption. Obtain the required time information through the clock module.

The data storage module adopts SD card. The SD card is convenient for storage and has a large storage capacity.

A power button is connected to the single chip microcomputer. The power button is used to control the opening and closing of the microcontroller.

By adopting the above-mentioned technical scheme, compared with the prior art, the beneficial effects of the present invention are as follows:

1. The single-chip microcomputer simultaneously receives the temperature data acquisition module to collect the actual environmental temperature data and the time information of the clock module in real time, and after processing by the single-chip microcomputer, it is sent to the display module for display. At the same time, the single-chip microcomputer also stores the processed temperature data and time information In the data storage module so that relevant personnel can view the analysis. When the collected temperature exceeds the temperature within the specified range, the single-chip microcomputer controls the LED indicator light to flash in corresponding colors to indicate different temperature states, and the buzzer performs corresponding work.

2. The DS18B20 sensor used in the temperature data acquisition module is connected to the single-chip microcomputer using a three-wire system. There is no need to add a converter in the middle. The hardware is simple and easy to operate. The temperature measurement range is -55°C~+125°C, and the maximum resolution is 0.0625°C. High precision and anti-interference strong ability. The single-chip microcomputer adopts the stm32f103vet6 chip, which is rich in internal and external resources, and the control accuracy and operation speed are sufficient to meet the needs. The invention has simple structure, is convenient for maintenance and installation, is controlled by a single-chip microcomputer, and has low cost.

Description of drawings

Fig. 1 is a structural schematic diagram of the present invention.

detailed description

Below in conjunction with accompanying drawing and specific embodiment the invention is further introduced:

A temperature alarm device, comprising a temperature data acquisition module and an alarm module, characterized in that: the temperature data acquisition module and the alarm module are respectively connected to a single-chip microcomputer, and the single-chip microcomputer is also connected with a data storage module, a clock module, an LED indicator light and As for the display module, the single-chip microcomputer adopts the stm32f103vet6 chip, the temperature data acquisition module adopts the DS18B20 sensor, and the LED indicator light is composed of three LED lamp groups of different colors. The single-chip microcomputer is connected with an interface module, and the interface module adopts a USB interface. The microcontroller is powered by the power supply module.

In this embodiment, the display module adopts LCD12864 liquid crystal screen.

Further, the LED indicator lights are composed of LED light groups of three different colors: red, yellow, and green. The alarm adopts a buzzer. The clock module is composed of DS1302 real-time clock chip. The data storage module adopts SD card. A power button is connected to the single chip microcomputer.

The working principle of the present invention is: the single-chip microcomputer simultaneously receives the temperature data acquisition module to collect the actual environmental temperature data and the time information of the clock module in real time, and transmits it to the display module for display after being processed by the single-chip microcomputer. At the same time, the single-chip microcomputer also processes the temperature Data and time information are stored in the data storage module for relevant personnel to view and analyze. When the collected temperature exceeds the temperature within the specified range, the single-chip microcomputer controls the LED indicator light to flash in corresponding colors to indicate different temperature states, and the buzzer performs corresponding work. In this embodiment, the three colors of the LED indicator light are used to indicate different temperature states. The upper limit value beyond the temperature range set by the single-chip microcomputer flashes red light, and the lower limit value beyond the temperature range set by the single-chip microcomputer flashes yellow light. , when it is within the temperature range set by the microcontroller, it will display a green light.

The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and it cannot be assumed that the specific implementation of the present invention is limited to these descriptions. For those of ordinary skill in the technical field of the present invention, without departing from the concept of the present invention, some simple deduction or replacement can be made, which should be regarded as belonging to the protection scope of the present invention.

Claims (8)

1. A temperature alarm device, comprising a temperature data acquisition module and an alarm module, characterized in that: the temperature data acquisition module and the alarm module are respectively connected to the single-chip microcomputer, and the single-chip microcomputer is also connected with a data storage module, a clock module, and an LED indication Light and display module, the single-chip microcomputer adopts stm32f103vet6 chip, the temperature data acquisition module adopts DS18B20 sensor, and the LED indicator light is composed of LED lamp groups of three different colors. 2. A temperature alarm device according to claim 1, characterized in that: said single-chip microcomputer is connected with an interface module, and the interface module adopts a USB interface. 3. A temperature alarm device according to claim 1, characterized in that: said display module adopts LCD12864 liquid crystal screen. 4. A temperature alarm device according to claim 1, characterized in that: said LED indicator light is composed of three LED light groups of red, yellow and green colors. 5. A temperature alarm device according to claim 1, characterized in that: said alarm adopts a buzzer. 6. A temperature alarm device according to claim 1, characterized in that: the clock module is composed of a DS1302 real-time clock chip. 7. A temperature alarm device according to claim 1, characterized in that: said data storage module adopts an SD card. 8. A temperature alarm device according to claim 1, characterized in that: a power button is connected to the single-chip microcomputer.