CN214474515U - Environment sensor - Google Patents
Environment sensor Download PDFInfo
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- CN214474515U CN214474515U CN202120080504.4U CN202120080504U CN214474515U CN 214474515 U CN214474515 U CN 214474515U CN 202120080504 U CN202120080504 U CN 202120080504U CN 214474515 U CN214474515 U CN 214474515U
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Abstract
The utility model discloses an environment sensor, which comprises a control module, a sensor module, a data acquisition module, an upper computer interface module and a power module; the control module, the sensor module and the upper computer interface module are electrically connected with the power supply module; the data acquisition module is respectively in communication connection with the control module and the sensor module; the control module is in communication connection with the upper computer interface module. The utility model discloses an use small-size electronic sensor of low-power consumption, multiple sensors such as integrated temperature, humidity, atmospheric pressure and gas analysis to use standardized interface to lay on open-air device with integrated forest fire prevention supervisory equipment, infrared camera and wireless base station etc. also can lay alone simultaneously, under the prerequisite that satisfies basic accuracy requirement, with environmental monitoring device miniaturization and lightweight, provide the kind various for scientific research and environmental protection, abundant detailed data support.
Description
Technical Field
The utility model belongs to the technical field of electron device, concretely relates to environmental sensor.
Background
To enhance ecological civilization construction and protect the natural environment, a more scientific understanding of the nature is required. The detailed and timely environmental conditions can provide effective data support and decision reference for scientific research and work arrangement in the fields of natural resource protection, wild animal protection and the like, and are favorable for researching natural science, protecting the natural environment and utilizing natural resources.
At present, field environment monitoring usually depends on a large monitoring device, and the field environment monitoring device has the advantage of being capable of accurately acquiring the environment state. The method has the disadvantages that the equipment cost is relatively high, and the cost is greatly increased due to the increase of the layout density; secondly, the equipment is heavy and not easy to carry, and is difficult to construct particularly in a mountainous area environment, so that the equipment is difficult to densely arrange in a short time; on the other hand, data return depends on related network infrastructure or is manually copied, and the cost is high in mountainous areas and is extremely inconvenient; finally, the function is relatively single.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing an environmental sensor in order to solve the problem of the environmental information of the multiple different states of perception.
The technical scheme of the utility model is that: an environment sensor comprises a control module, a sensor module, a data acquisition module, an upper computer interface module and a power supply module;
the control module, the sensor module and the upper computer interface module are electrically connected with the power supply module; the data acquisition module is respectively in communication connection with the control module and the sensor module; the control module is in communication connection with the upper computer interface module.
The utility model has the advantages that: the utility model discloses an use small-size electronic sensor of low-power consumption, multiple sensors such as integrated temperature, humidity, atmospheric pressure and gas analysis to use standardized interface to lay on open-air device with integrated forest fire prevention supervisory equipment, infrared camera and wireless base station etc. also can lay alone simultaneously, under the prerequisite that satisfies basic accuracy requirement, with environmental monitoring device miniaturization and lightweight, provide the kind various for scientific research and environmental protection, abundant detailed data support.
Further, the control module adopts a main control chip with the model number of STM32L071 CBTx.
The beneficial effects of the further scheme are as follows: the utility model discloses in, control module's main control chip possesses the low-power consumption mode, reads sensor data through I2C interface, SPI interface and UART interface, and the dominant frequency is not less than 32MHz, and memory space is greater than 128 kB; the ARMCortex-M0 inner core is used, the working frequency is 32MHz, the ARMCortex-M0 inner core is provided with 2I 2C, 2 SPI, 4 UARTs and a low-power UART, in addition, in order to be matched with the singlechip to normally work, peripheral circuits matched with the singlechip comprise but are not limited to components such as a 12MHz crystal oscillator, an RTC power supply, a BOOT switch, a filter capacitor and the like.
Further, the sensor module comprises a temperature, humidity and air pressure sensor, an electrochemical gas concentration sensor, a light intensity sensor, a gyroscope and a positioning submodule;
temperature and humidity baroceptor, electrochemistry gas concentration sensor, light intensity sensor, gyroscope and location submodule all with power module electric connection, and all with data acquisition module communication connection.
The beneficial effects of the further scheme are as follows: the utility model discloses in, sensor module adopts pencil and data acquisition module to connect for data acquisition, each sensor is independent each other, can arrange in the position of difference, all uses pluggable interface, but the configuration of modularization uses multi-way switch to change interface output voltage according to the in-service use condition, increases and decreases sensor quantity and kind.
Furthermore, the data acquisition module comprises a voltage conversion submodule and a data interface submodule which are in communication connection with each other;
the voltage conversion submodule comprises an analog signal voltage conversion circuit and a digital signal level conversion circuit; the data interface sub-module comprises an analog signal interface, a digital signal interface and a switch signal interface; the digital signal interface comprises 4 UART sub-interfaces, 2I 2C sub-interfaces and 2 SPI sub-interfaces;
the analog signal interface is in communication connection with the analog signal voltage conversion circuit; the UART sub-interface, the I2C sub-interface, the SPI sub-interface and the switch signal interface are all in communication connection with the digital signal level conversion circuit.
The beneficial effects of the further scheme are as follows: the utility model discloses in, data acquisition module is used for the digital signal who gathers the sensor, analog signal and switching signal turn into the signal that accords with control chip communication standard, through the UART subinterface, I2C subinterface and SPI subinterface correspond and are connected to UART data bus, SPI data bus and I2C data bus, the digital signal that sensor module returned transmits control module after voltage conversion circuit adjusts the sensor data level unanimous with the control module level, to the analog signal who returns, gather through the analog quantity interface, convert the scope that control module can gather with voltage through voltage conversion circuit, to switch class signal, convert the signal to control module's level, be connected to control module GPIO. The redundant interfaces are convenient for selecting and installing sensors with other functions at any time in the using process. The voltage conversion submodule comprises an analog signal voltage conversion circuit and a digital signal level conversion circuit; the analog signal voltage conversion circuit is composed of an amplifying circuit and a voltage division circuit, converts voltage into a range which can be read by the control module ADC, and the digital level conversion circuit is composed of a plurality of level conversion chips and converts different sensor communication levels into TTL electricity. The data interface sub-module comprises an analog signal interface, a digital signal interface and a switch signal interface; the digital signal interface comprises a UART sub-interface, an I2C sub-interface and an SPI sub-interface, and the interfaces have redundancy except the connection with the sensor and comprise 2 idle UART interfaces, 1 idle I2C interface and 1 idle SPI interface.
Further, the upper computer interface module comprises a radio frequency sub-module, an RS232 interface and an I2C interface;
the radio frequency sub-module, the RS232 interface and the I2C interface are electrically connected with the power supply module and are in communication connection with the control module.
The beneficial effects of the further scheme are as follows: the utility model discloses in, RS232 interface and I2C interface are used for being connected to the host computer and accept the instruction, upload the host computer on the data that will gather and obtain.
Further, the radio frequency sub-module adopts a wireless radio frequency chip with the model number of E32-170T 30D.
Further, the power supply module comprises a 3.7V lithium battery and a transformation chip; the transformation chip adopts a buck-boost converter with the model number of TPS 63020.
The beneficial effects of the further scheme are as follows: the utility model discloses in, power module is used for providing required different voltages for control module, data acquisition module and sensor module, and the voltage that needs to use includes but is not limited to 1.8V, 3.3V and 5V, and maximum output power is not less than 1 tile, under the condition of chooseing for use radio frequency output, maximum output is not less than 5 tiles of power; the TPS63020 buck-boost converter is matched with different external circuits, 1.8V voltage is output to a sensor data interface to supply power for a BME280 sensor and an MPU6050 gyroscope, a 3.3V voltage sensor interface is output to supply power for an UM220-III NV positioning module and a corresponding electrochemical gas sensor, an STM32L71CBTx microcontroller is supplied with power, and 5V voltage is output to an upper computer interface to supply power for an E32-170T30D radio frequency module.
Drawings
FIG. 1 is a block diagram of an environmental sensor;
FIG. 2 is a block diagram of a data acquisition module;
in the figure, 1, a control module; 2. a sensor module; 3. a data acquisition module; 4. an upper computer interface module; 5. a power supply module; 6. a temperature, humidity and air pressure sensor; 7. an electrochemical gas concentration sensor; 8. a light intensity sensor; 9. a gyroscope; 10. positioning a sub-module; 11. a voltage conversion submodule; 12. a data interface sub-module; 13. an analog signal voltage conversion circuit; 14. a digital signal level conversion circuit; 15. an analog signal interface; 16. a digital signal interface; 17. a switching signal interface; 18. a UART sub-interface; 19. the I2C sub-interface; 20. an SPI sub-interface; 21. a radio frequency sub-module; 22. an RS232 interface; 23. I2C interface.
Detailed Description
The embodiments of the present invention will be further described with reference to the accompanying drawings.
As shown in fig. 1, the utility model provides an environment sensor, which comprises a control module 1, a sensor module 2, a data acquisition module 3, an upper computer interface module 4 and a power module 5;
the control module 1, the sensor module 2 and the upper computer interface module 4 are electrically connected with the power supply module 5; the data acquisition module 3 is respectively in communication connection with the control module 1 and the sensor module 2; the control module 1 is in communication connection with the upper computer interface module 4.
In the embodiment of the present invention, as shown in fig. 1, the control module 1 adopts a main control chip with a model number of STM32L071 CBTx. The main control chip of the control module has a low power consumption mode, sensor data are read through an I2C interface, an SPI interface and a UART interface, the main frequency is not lower than 32MHz, and the storage space is larger than 128 kB; the ARMCortex-M0 inner core is used, the working frequency is 32MHz, the ARMCortex-M0 inner core is provided with 3I 2C, 2 SPI, 4 UARTs and a low-power UART, in addition, in order to be matched with the singlechip to normally work, peripheral circuits matched with the singlechip comprise but are not limited to components such as a 12MHz crystal oscillator, an RTC power supply, a BOOT switch, a filter capacitor and the like. In addition, the main advantages of the STM32L071CBTx chip are low power consumption, multiple interfaces; meanwhile, STM32L071 series chips can also be used as the main control chip of the control module.
In the embodiment of the present invention, as shown in fig. 1, the sensor module 2 includes a temperature, humidity and air pressure sensor 6, an electrochemical gas concentration sensor 7, a light intensity sensor 8, a gyroscope 9, and a positioning sub-module 10;
In the embodiment of the present invention, as shown in fig. 1, the temperature, humidity and pressure sensor 6 is an environmental sensor with a BME280 model; the electrochemical gas concentration sensor 7 adopts an oxygen concentration sensor with the model of Honeywell S-series; the light intensity sensor 8 adopts an illumination sensor with the model number of BH 1750; the gyroscope 9 adopts an electronic gyroscope with the model number of MPU 6050; the positioning sub-module 10 employs a positioning chip of UM220-III NV. The humidity resolution of the BME280 environmental sensor is 0.8%, the error is +/-2%, the temperature resolution is 0.1 ℃, the error is +/-0.5 ℃, the atmospheric pressure resolution is 0.18PA, the error is +/-1 HPA, the BME280 environmental sensor is connected with the control module through an I2C interface, and in addition, a plurality of BME280 sensors can be installed in order to avoid damage or deviation of installation positions; BH1750 illumination sensor measurement range 1-65535 lx; the sensing precision of the Honeywell S-series oxygen concentration sensor is 0.6ppm, and the error is +/-400 ppm; the UM220-III NV positioning chip is connected with the control module through a UART interface, the positioning precision is 2.5m, the communication frequency ranges are a GPS-L1 frequency range and a BDS-B1 frequency range, and corresponding frequency antennas are used. The sensors, such as the environment sensor and the electrochemical gas concentration sensor, which are required to be in direct contact with the external environment, are fixed in a cabinet and a shell to which the environment sensor is attached, lead wires are led out and connected to a sensor interface of a mainboard through a 1.25mm plug or a 5.08mm terminal, and the positioning sub-module and the gyroscope can be directly attached and welded on the mainboard.
In the embodiment of the present invention, as shown in fig. 2, the data acquisition module 3 includes a voltage conversion sub-module 11 and a data interface sub-module 12, which are communicatively connected to each other;
the voltage conversion submodule 11 comprises an analog signal voltage conversion circuit 13 and a digital signal level conversion circuit 14; the data interface sub-module 12 comprises an analog signal interface 15, a digital signal interface 16 and a switch signal interface 17; the digital signal interface 16 includes 4 UART sub-interfaces 18, 2I 2C sub-interfaces 19, and 2 SPI sub-interfaces 20;
the analog signal interface 15 is in communication connection with the analog signal voltage conversion circuit 13; the UART sub-interface 18, the I2C sub-interface 19, the SPI sub-interface 20, and the switch signal interface 17 are all communicatively coupled to the digital signal level conversion circuit 14. The data acquisition module is used for converting digital signals, analog signals and switch signals acquired by the sensor into signals meeting the communication standard of the control chip, the signals are correspondingly connected to a UART data bus, an SPI data bus and an I2C data bus through a UART sub-interface, an I2C sub-interface and an SPI sub-interface, the digital signals returned by the sensor module are transmitted to the control module after the level of the sensor data is adjusted to be consistent with the level of the control module through a voltage conversion circuit, for the returned analog signals, the analog signals are acquired through an analog quantity interface, the voltage is converted into the range which can be acquired by the control module through the voltage conversion circuit, for the switch type signals, the signals are converted into the level of the control module, and the switch type signals are connected to the control module GPIO. For analog quantity signals, the sensor is connected with the sensor through a 5.08mm terminal base, the 5.08mm terminal base is connected with an analog signal voltage conversion circuit, the input voltage of the sensor is converted into a voltage range which can be acquired by a control module, and the voltage range is acquired by using an ADC (analog to digital converter) of the control module; for digital signals, the sensor is directly connected with the control module through a plurality of I2C interfaces, a plurality of SPI interfaces and a plurality of UART interfaces which are connected in parallel on corresponding buses, collected signals are converted into the same level as the control module interfaces through a digital signal level conversion circuit, and then information is transmitted to the control module through the corresponding buses. In addition, in order to supply power to the sensor, the interface all inputs the voltage that the corresponding sensor matches, it is specific, when I2C interface is as humiture baroceptor interface and light intensity sensor interface, connect power module 1.8V output, when the SPI interface is as the gyroscope interface, connect power module 1.8V output, electrochemistry gas concentration sensor and the connection power module 3.3V output of locator submodule interface, supply circuit accessible multi-way switch in addition, can provide other sensors that different voltages are in order to connect operating voltage difference for redundant interface, reserve 2 GPIO interfaces in addition and be used for perception logic signal, connection control chip GPIO input pin.
In the embodiment of the present invention, as shown in fig. 1, the upper computer interface module 4 includes a radio frequency sub-module 21, an RS232 interface 22, and an I2C interface 23;
the radio frequency sub-module 21, the RS232 interface 22 and the I2C interface 23 are all electrically connected to the power module 5, and are all communicatively connected to the control module 1. And the RS232 interface and the I2C interface are used for being connected to an upper computer to receive instructions and uploading acquired data to the upper computer. In hardware, an I2C interface is welded on an environment sensor mainboard by adopting a 1.25mm patch socket, a corresponding filter capacitor, a pull-up resistor, an ESD protection diode and the like; the RS232 interface is fixed on the mainboard by using a standard interface; when no upper computer exists or information needs to be uploaded to a far end due to other reasons, a UART interface is added to an upper computer interface, an external network module comprises a narrow-band radio frequency module and an antenna with corresponding frequency, the communication frequency can be 170MHz, 230MHz or 433MHz, the 170MHz communication frequency is used in a complex terrain environment, an E32-170T30D module is selected, the UART interface is connected with a control module, and a 6dBi gain rubber rod antenna is adopted.
In the embodiment of the present invention, as shown in fig. 1, the rf sub-module 21 is a wireless rf chip with a model number of E32-170T 30D.
In the embodiment of the present invention, as shown in fig. 1, the power module 5 includes a 3.7V lithium battery and a transformer chip; the transformation chip adopts a buck-boost converter with the model number of TPS 63020. The power module is used for providing different required voltages for the control module, the data acquisition module and the sensor module, the required voltages include but are not limited to 1.8V, 3.3V and 5V, the maximum output power is not lower than 1 watt, and under the condition of selecting radio frequency output, the maximum output power is not lower than 5 watts; the TPS63020 buck-boost converter is matched with different external circuits, 1.8V voltage is output to a sensor data interface to supply power for a BME280 sensor and an MPU6050 gyroscope, a 3.3V voltage sensor interface is output to supply power for an UM220-III NV positioning module and a corresponding electrochemical gas sensor, an STM32L71CBTx microcontroller is supplied with power, and 5V voltage is output to an upper computer interface to supply power for an E32-170T30D radio frequency module.
The utility model discloses a theory of operation and process do: when the environment sensor of the utility model works, the sensor module 2 utilizes the temperature, humidity and air pressure sensor 6, the electrochemical gas concentration sensor 7, the light intensity sensor 8, the gyroscope 9 and the positioning sub-module 10 to collect in real time, the data collection module 3 converts the digital signals, the analog signals and the switch signals collected by the sensor module 2 into signals conforming to the communication standard of the control module 1, the digital signals returned by the sensor module 2 are correspondingly connected to the UART data bus, the SPI data bus and the I2C data bus through the UART sub-interface 18, the I2C sub-interface 19 and the SPI sub-interface 20, the digital signals returned by the sensor module 2 are transmitted to the control module after the sensor data level is adjusted to be consistent with the control module level through the voltage conversion sub-module 11, for the returned analog signals, the analog quantity is collected through the analog quantity interface, the voltage is converted to the range which can be collected by the control module through the voltage conversion sub-module 11, for the switch signal, converting the signal to the level of the control module 1, and connecting the level to the GPIO of the control module 1; the power module 5 is used for providing different required voltages for the control module 1, the data acquisition module 3 and the sensor module 2.
The utility model has the advantages that: the utility model discloses an use small-size electronic sensor of low-power consumption, multiple sensors such as integrated temperature, humidity, atmospheric pressure and gas analysis to use standardized interface to lay on open-air device with integrated forest fire prevention supervisory equipment, infrared camera and wireless base station etc. also can lay alone simultaneously, under the prerequisite that satisfies basic accuracy requirement, with environmental monitoring device miniaturization and lightweight, provide the kind various for scientific research and environmental protection, abundant detailed data support.
It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention, and it is to be understood that the scope of the invention is not limited to such specific statements and embodiments. Those skilled in the art can make various other specific modifications and combinations based on the teachings of the present invention without departing from the spirit of the invention, and such modifications and combinations are still within the scope of the invention.
Claims (5)
1. An environment sensor is characterized by comprising a control module (1), a sensor module (2), a data acquisition module (3), an upper computer interface module (4) and a power supply module (5);
the control module (1), the sensor module (2) and the upper computer interface module (4) are electrically connected with the power supply module (5); the data acquisition module (3) is in communication connection with the control module (1) and the sensor module (2) respectively; the control module (1) is in communication connection with the upper computer interface module (4);
the sensor module (2) comprises a temperature, humidity and air pressure sensor (6), an electrochemical gas concentration sensor (7), a light intensity sensor (8), a gyroscope (9) and a positioning sub-module (10);
the temperature, humidity and air pressure sensor (6), the electrochemical gas concentration sensor (7), the light intensity sensor (8), the gyroscope (9) and the positioning sub-module (10) are electrically connected with the power supply module (5) and are in communication connection with the data acquisition module (3);
the data acquisition module (3) comprises a voltage conversion submodule (11) and a data interface submodule (12) which are mutually communicated and connected;
the voltage conversion submodule (11) comprises an analog signal voltage conversion circuit (13) and a digital signal level conversion circuit (14); the data interface sub-module (12) comprises an analog signal interface (15), a digital signal interface (16) and a switch signal interface (17); the digital signal interface (16) comprises 4 UART sub-interfaces (18), 2I 2C sub-interfaces (19) and 2 SPI sub-interfaces (20);
the analog signal interface (15) is in communication connection with the analog signal voltage conversion circuit (13); the UART sub-interface (18), the I2C sub-interface (19), the SPI sub-interface (20) and the switch signal interface (17) are all in communication connection with the digital signal level conversion circuit (14).
2. The environment sensor according to claim 1, characterized in that the control module (1) uses a main control chip of model number STM32L071 CBTx.
3. The environment sensor according to claim 1, characterized in that the upper computer interface module (4) comprises a radio frequency sub-module (21), an RS232 interface (22) and an I2C interface (23);
the radio frequency sub-module (21), the RS232 interface (22) and the I2C interface (23) are electrically connected with the power module (5) and are in communication connection with the control module (1).
4. The environmental sensor according to claim 3, wherein the radio frequency sub-module (21) is a radio frequency chip with model number E32-170T 30D.
5. The environmental sensor according to claim 1, wherein the power supply module (5) comprises a 3.7V lithium battery and a transformer chip; the voltage transformation chip adopts a voltage boosting and reducing converter with the model number of TPS 63020.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120080504.4U CN214474515U (en) | 2021-01-13 | 2021-01-13 | Environment sensor |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202120080504.4U CN214474515U (en) | 2021-01-13 | 2021-01-13 | Environment sensor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116660781A (en) * | 2023-06-01 | 2023-08-29 | 深圳市捷思特电子设备有限公司 | Outdoor high-power bidirectional quick-charging mobile power supply testing system |
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2021
- 2021-01-13 CN CN202120080504.4U patent/CN214474515U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116660781A (en) * | 2023-06-01 | 2023-08-29 | 深圳市捷思特电子设备有限公司 | Outdoor high-power bidirectional quick-charging mobile power supply testing system |
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