CN204575137U - A kind of Loquat Garden environmental parameter detection device - Google Patents

Abstract

An environmental parameter detection device for loquat gardens, designed with cost-effective STM8S105K6T6 single-chip microcomputer as the core combined with sensor technology, operational amplifier technology, LCD liquid crystal display, etc., consists of single-chip controller (1), soil pH detection circuit (2), soil temperature detection Module (3), soil moisture detection module (4), light intensity detection module (5), and LCD liquid crystal display (6) are jointly composed to realize soil pH detection, soil temperature detection, soil moisture detection, and light intensity detection, and through LCD The liquid crystal display realizes the display function; the device has notable features such as strong practicability and simple use.

Description

A detection device for environmental parameters of a loquat garden

technical field

The utility model relates to a single-chip microcomputer controller technology, a sensor technology, an operational amplifier technology, an LCD liquid crystal display, in particular to a loquat garden environmental parameter detection device.

Background technique

Loquat is a rare fruit unique to southern my country. Unlike most fruit trees, loquat grows buds in autumn, blooms in winter, bears seeds in spring, matures in early summer, and bears the rain and dew of the four seasons. Soft and juicy, moderately sweet and sour, and delicious, it is known as the "king of fruits". In order to improve the yield and quality of loquat, it is a necessary technical guarantee to test the environmental parameters of the loquat yard. This device uses the cost-effective STM8S105K6T6 single-chip microcomputer as the core to design a loquat garden environmental parameter detection device combined with sensor and other technologies.

Contents of the invention

The purpose of this utility model is to provide a kind of loquat garden environmental parameter detection device, realize soil pH detection through pH electrode and amplifying circuit; Through soil temperature detection module, soil moisture detection module, light intensity detection module, realize soil temperature detection, soil moisture Detection, light intensity detection, and realize the display function through the LCD liquid crystal display.

The technical solution adopted by the utility model to solve its technical problems is: the utility model takes the STM8S105K6T6 single-chip microcomputer with high cost performance as the core and combines sensor technology, op-amp technology, LCD liquid crystal display, etc. to design, and the single-chip microcomputer controller (1), soil pH detection The circuit (2), the soil temperature detection module (3), the soil moisture detection module (4), the light intensity detection module (5), and the LCD liquid crystal display (6) are composed together, and it is characterized in that: the single-chip controller is composed of STM8S105K6T6 single-chip microcomputer ( 1), the soil pH detection circuit is composed of E-201-C electrode, AD621 instrumentation amplifier, and LM741 operational amplifier (2), the soil temperature detection module is composed of SLST1 module (3), and the soil moisture detection module is composed of TDC220D module (4) , the light intensity detection module (5) is composed of the BH1750FVI module, and the LCD liquid crystal display (6) is composed of the JLX12864G-086-P module; the positive pole and negative pole of the E-201-C electrode are respectively connected to the second and third ports of the AD621 instrument amplifier , the sixth port of the AD621 instrumentation amplifier is connected to the second port of the LM741 operational amplifier, and the sixth port of the LM741 operational amplifier is connected to the internal ADC input port PB1 of the STM8S105K6T6 microcontroller to realize soil pH detection; the PA4 port of the STM8S105K6T6 microcontroller is connected to the SDI- 12 ports and PA5 port are connected to SDI-12 port of TDC220D module to realize soil temperature and soil moisture detection; PA6 and PA7 ports of STM8S105K6T6 single-chip microcomputer are respectively connected to SDI and SCLK ports of BH1750FVI module to realize light intensity detection; PC0-PC7 of STM8S105K6T6 single-chip microcomputer , PD3-PD7 ports are respectively connected to the data port and control port of the JLX12864G-086-P module to realize the display of soil pH, soil temperature, soil moisture and light intensity.

The beneficial effects of the utility model are: the cost-effective STM8S105K6T6 single-chip microcomputer is used as the core in combination with sensor technology, operational amplifier technology, LCD liquid crystal display, etc. to design, to realize soil pH detection, soil temperature detection, soil moisture detection, and light intensity detection; and through LCD The liquid crystal display realizes the display function; the device has notable features such as strong practicability and simple use.

Description of drawings

Below in conjunction with accompanying drawing, the utility model is further described.

Shown in Fig. 1 is the principle structural block diagram of the present utility model, among the figure: 1. by single-chip microcomputer controller, 2. soil pH detection circuit, 3. soil temperature detection module, 4. soil moisture detection module, 5. illumination intensity detection module , 6. LCD liquid crystal display.

Detailed ways

See Figure 1. The utility model consists of a single-chip microcomputer controller (1), soil pH detection circuit (2), soil temperature detection module (3), soil moisture detection module (4), light intensity detection module (5), LCD liquid crystal display ( 6) Composition together. The single-chip controller (1) is composed of STM8S105K6T6 single-chip microcomputer.

The soil pH detection circuit (2) is composed of E-201-C electrode, AD621 instrumentation amplifier and LM741 operational amplifier. The positive pole and negative pole of E-201-C electrode are respectively connected to the second and third ports of AD621 instrumentation amplifier. The sixth port of the LM741 operational amplifier is connected to the second port of the LM741 operational amplifier, and the sixth port of the LM741 operational amplifier is connected to the internal ADC input port PB1 of the STM8S105K6T6 microcontroller to realize soil pH detection;

The soil temperature detection module (3) is composed of the SLST1 module, and the soil moisture detection module (4) is composed of the TDC220D module. Both the SLST1 module and the TDC220D module use the SDI-12 interface for communication, and the data acquisition method is realized by writing command control words to the module ; First send the acquisition command control word, that is, the sensor module responds, the control word format is "aM!", 'a' indicates the address, 'M' indicates the acquisition command, '! 'Indicates the end character of the control word; then the sensor module responds, the data format is "atttn", 'a' indicates the address of the sensor, "ttt" indicates the time of this measurement in seconds, 'n' indicates the data quantity. The PA4 port of the STM8S105K6T6 microcontroller is connected to the SDI-12 port of the SLST1 module, and the PA5 port is connected to the SDI-12 port of the TDC220D module, so as to realize soil temperature and soil moisture detection.

The light intensity detection module (5) is composed of the BH1750FVI module. The BH1750FVI module communicates through the IIC interface. The light intensity value can be obtained by writing the control word to the BH1750FVI module. The PA6 and PA7 ports of the STM8S105K6T6 single-chip microcomputer are respectively connected to the SDI and SCLK ports of the BH1750FVI module , so as to realize the detection of light intensity.

The LCD liquid crystal display (6) is composed of the JLX12864G-086-P module, and the PC0-PC7 and PD3-PD7 ports of the STM8S105K6T6 microcontroller are respectively connected to the data port and control port of the JLX12864G-086-P module to realize soil pH, soil temperature and soil moisture and light intensity display.

Claims (1)

1. An environmental parameter detection device for a loquat garden, consisting of a single-chip controller (1), a soil pH detection circuit (2), a soil temperature detection module (3), a soil moisture detection module (4), and a light intensity detection module (5) , LCD liquid crystal display (6), characterized in that: a). STM8S105K6T6 single-chip microcomputer constitutes a single-chip controller (1), and an E-201-C electrode, AD621 instrument amplifier, and LM741 operational amplifier constitute a soil pH detection circuit (2 ), the soil temperature detection module (3) is composed of the SLST1 module, the soil moisture detection module (4) is composed of the TDC220D module, the light intensity detection module (5) is composed of the BH1750FVI module, and the LCD liquid crystal display is composed of the JLX12864G-086-P module ( 6). b). The positive pole and negative pole of the E-201-C electrode are respectively connected to the second and third ports of the AD621 instrumentation amplifier, the sixth port of the AD621 instrumentation amplifier is connected to the second port of the LM741 operational amplifier, and the first port of the LM741 operational amplifier The six ports are connected to the internal ADC input port PB1 of the STM8S105K6T6 microcontroller to realize soil pH detection; c). The PA4 port of the STM8S105K6T6 microcontroller is connected to the SDI-12 port of the SLST1 module, and the PA5 port is connected to the SDI-12 port of the TDC220D module to realize soil temperature and soil pH. Moisture detection; d). The PA6 and PA7 ports of the STM8S105K6T6 single-chip microcomputer are respectively connected to the SDI and SCLK ports of the BH1750FVI module to realize light intensity detection; e). The PC0-PC7 and PD3-PD7 ports of the STM8S105K6T6 single-chip microcomputer are respectively connected to the JLX12864G-086-P module The data port and control port realize the display of soil pH, soil temperature, soil moisture and light intensity.