Environmental monitoring equipment based on Beidou time service
通过北斗授时模块直接获取高精度时间信号,解决了现有技术中时间精度不足的问题,实现了环境监测设备的高精度时间显示。
Patent Information
- Application Number
- CN202422377151.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-27
- Publication Date
- 2025-07-11
- Estimated Expiration
- 2034-09-27
AI Technical Summary
When the time acquisition of existing environmental monitoring equipment depends on network timing or manual calibration, it leads to insufficient time accuracy and errors.
The Beidou timing module is used to directly obtain high-precision time signals, and convert the analog signal into digital signals through signal acquisition, preprocessing, control and storage units, and transmit it to the display module for display through the main control module.
Improve the accuracy of time display, reduce delay, and enhance the time synchronization accuracy of environmental monitoring equipment.
Smart Images
Figure CN223091328U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of environmental monitoring equipment, in particular to an environmental monitoring equipment based on Beidou time service. Background Art
[0002] Environmental monitoring equipment generally includes a time acquisition device, a monitoring device and a display device. The time is acquired by the time acquisition device, then the environmental parameters are acquired by the monitoring device, and finally the time and environmental parameters are displayed by the display device. However, at present, the time acquisition of environmental monitoring equipment often relies on network time service or manual time calibration. Due to reasons such as network delay and clock error, the displayed time accuracy is insufficient, and there is a certain deviation compared with the actual time. Even if calibrated regularly, there will still be a certain error between the displayed time and the actual time. Therefore, this application provides an environmental monitoring equipment based on Beidou time service to solve the above problems. Content of the Utility Model
[0003] The purpose of the utility model is to provide an environmental monitoring equipment based on Beidou time service. The Beidou high-precision time signal is received by the Beidou time service module, and the time signal is directly obtained from the Beidou time service module by the main control module, reducing the delay and improving the time accuracy.
[0004] In order to achieve the above utility model purpose, the technical scheme adopted by the utility model is as follows:
[0005] According to one aspect of the present utility model, an environmental monitoring equipment based on Beidou time service is provided, including a Beidou time service module, a sensor module, a main control module and a display module;
[0006] The Beidou time service module, the sensor module and the display module are respectively electrically connected to the main control module;
[0007] The Beidou time service module includes a signal acquisition unit, a preprocessing unit, a control unit, a storage unit, a clock unit and a time data distribution unit;
[0008] The signal acquisition unit is electrically connected to the preprocessing unit;
[0009] The preprocessing unit is electrically connected to the control unit;
[0010] The storage unit is electrically connected to the control unit;
[0011] The preprocessing unit, the control unit and the storage unit are respectively electrically connected to the clock unit;
[0012] The control unit and the storage unit are respectively electrically connected to the time data distribution unit.
[0013] Preferably, the signal acquisition unit includes a long-wave antenna, and the long-wave antenna is electrically connected to the preprocessing unit.
[0014] Preferably, the preprocessing unit includes an operational amplifier, a filter, and an analog-to-digital converter. The operational amplifier, the filter, and the analog-to-digital converter are electrically connected in sequence, and the operational amplifier is electrically connected to the main control module.
[0015] Preferably, the control unit includes a microcontroller. The microcontroller includes a microprocessor and a memory interface. The memory interface is electrically connected to the microprocessor, and the preprocessing unit is electrically connected to the microprocessor.
[0016] Preferably, the storage unit includes a dynamic memory and a static memory, and the dynamic memory and the static memory are respectively electrically connected to the memory interface.
[0017] Preferably, the time distribution unit includes an RS232 interface chip and an RS422 interface chip, and the RS232 interface chip and the RS422 interface chip are respectively electrically connected to the microprocessor.
[0018] Preferably, the clock unit includes an active crystal oscillator, and the preprocessing unit, the control unit, and the storage unit are respectively electrically connected to the active crystal oscillator.
[0019] Preferably, the sensor module includes a temperature sensor, a humidity sensor, an atmospheric sensor, an anemometer, a PM2.5 sensor, and a light intensity sensor. The temperature sensor, the humidity sensor, the atmospheric sensor, the anemometer, the PM2.5 sensor, and the light intensity sensor are respectively electrically connected to the main control module.
[0020] Preferably, the main control module includes a main control chip, a UART interface, an RS485 interface, and a HUB12 interface. The main control chip is respectively electrically connected to the UART interface and the RS485 interface. The UART interface is electrically connected to the Beidou time service module. The RS485 interface is electrically connected to the sensor module. The HUB12 interface is electrically connected to the display module.
[0021] Preferably, the display module includes an LED display screen, and the HUB12 interface is electrically connected to the LED display screen.
[0022] In summary, due to the adoption of the above technical solutions, the beneficial effects of the present utility model are as follows:
[0023] The utility model obtains various parameters of the environment through the sensor module, transmits the parameters to the main control module, receives the Beidou high-precision analog time signal through the Beidou time service module, converts the analog time signal into a digital time signal through each unit of the Beidou time service module, and transmits the digital time signal to the main control module. Finally, the main control module transmits the environmental parameter signal and the time signal to the display module, and the display module displays each parameter and time. By receiving the high-precision time signal of Beidou satellites through the Beidou time service module, the delay is reduced and the display time accuracy is improved. Brief Description of the Drawings
[0024] Figure 1 is the structural block diagram of the utility model. Detailed Embodiment
[0025] To make the purpose, technical solution and advantages of the utility model clearer, the following takes preferred embodiments with reference to the drawings and further elaborates on the utility model. However, it should be noted that many details listed in the specification are only for enabling the reader to have a thorough understanding of one or more aspects of the utility model, and these aspects of the utility model can be realized even without these specific details.
[0026] Please refer to Figure 1 , the utility model provides an environmental monitoring device based on Beidou time service, and the technical solution is as follows:
[0027] An environmental monitoring device based on Beidou time service, the device includes a Beidou time service module, a sensor module, a main control module and a display module. The Beidou time service module, the sensor module and the display module are respectively electrically connected to the main control module. The main control module is used to obtain the high-precision time signal from the Beidou time service module, and then obtain various environmental parameter signals from the sensor module, and finally transmit the time signal and the environmental parameter signal to the display module, and the display module displays the time signal and the environmental parameter signal together. Obtaining the time signal directly from the Beidou time service module reduces the time delay, and together with each sensor, improves the monitoring accuracy of the device.
[0028] Specifically, the Beidou timekeeping module includes a signal acquisition unit, a preprocessing unit, a control unit, a storage unit, a clock unit, and a time data distribution unit. The signal acquisition unit includes a long-wave antenna, which is used to receive Beidou satellite signals. The long-wave antenna is electrically connected to the preprocessing unit. After the long-wave antenna receives the signal, it transmits the signal to the preprocessing unit, and the preprocessing unit preprocesses the signal. The preprocessing unit includes an AGC amplification subunit, a band-pass filtering subunit, and a sampling subunit. The AGC amplification subunit includes 4 operational amplifiers, and the model of the operational amplifier is SF147. 4 operational amplifiers form a 4-stage operational amplifier circuit, and the Beidou time signal is amplified by the 4-stage operational amplifier circuit. The amplified Beidou time signal is transmitted to the band-pass filtering subunit, and the signal is filtered by the band-pass filtering subunit. The band-pass filtering subunit includes a filter, and the filter is a Butterworth filter. The frequency response curve within the passband of the Butterworth filter is the flattest, which can achieve a good balance between the number of devices and the step response and device tolerance sensitivity. The filtered signal is transmitted to the sampling subunit, and the sampling subunit samples the analog signal. The sampling subunit includes an analog-to-digital converter, and the model of the analog-to-digital converter is BM79AD60G. The analog signal is sampled by the analog-to-digital converter, and the Beidou time analog signal is converted into a Beidou time digital signal for subsequent identification and processing by the control unit.
[0029] The control unit includes a microcontroller, and the microcontroller includes a microprocessor and a memory interface. The microprocessor is a high-performance quad-core PSOC processor. The model of the microprocessor is FMQL45T900. The microprocessor is electrically connected to the analog-to-digital converter, and the Beidou time digital signal is transmitted to the microprocessor. The memory interface is electrically connected to the microprocessor, and the microprocessor stores the digital signal in the storage unit through the memory interface. The storage unit includes a dynamic memory and a static memory. The dynamic memory is a DDR3 dynamic memory, and the static memory is a FLASH memory. The dynamic memory and the static memory are respectively electrically connected to the microprocessor. The time digital signal stored in the static memory is transmitted to the time data distribution unit after being called by the microprocessor. The time distribution unit includes an RS232 interface chip and an RS422 interface chip. The RS232 interface chip and the RS422 interface chip are respectively electrically connected to the microprocessor. The Beidou time digital signal is transmitted to the main control module through the RS232 interface chip or the RS422 interface chip.
[0030] Among them, the chips in the preprocessing unit, the control unit, and the storage unit are all provided with a unified clock signal by the clock unit. The clock unit includes an active crystal oscillator. The analog-to-digital converter, the microprocessor, the dynamic memory, and the static memory are all provided with a stable clock signal by the active crystal oscillator to ensure signal processing and reduce the adverse effects caused by delay.
[0031] The sensor module includes a temperature sensor, a humidity sensor, an atmospheric sensor, an anemometer, a PM2.5 sensor, and a light intensity sensor. The temperature sensor, the humidity sensor, the atmospheric sensor, the anemometer, the PM2.5 sensor, and the light intensity sensor are electrically connected to the main control module respectively. Various sensors are used to monitor the environment, obtain environmental parameter signals, and transmit the environmental parameter signals to the main control module.
[0032] The main control module includes a main control chip, a UART interface, an RS485 interface, and a HUB12 interface. The main control chip is electrically connected to the UART interface and the RS485 interface respectively. The UART interface is electrically connected to an RS232 interface chip and an RS422 interface chip respectively. The RS485 interface is electrically connected to each sensor respectively. The HUB12 interface is electrically connected to the display module. The display module includes an LED display screen, and the HUB12 interface is electrically connected to the LED display screen.
[0033] The utility model obtains parameters such as temperature, humidity, air pressure, wind force, PM2.5, and light intensity of the environment through the sensor module, and transmits the parameters to the main control chip. Then, it receives the high-precision Beidou time through the Beidou time service module and transmits the time signal to the main control chip. Finally, the main control chip transmits the environmental parameter signal and the time signal to the LED display screen, and the LED display screen displays each parameter and the time. By receiving the high-precision Beidou satellite time signal through the Beidou time service module, the delay is reduced and the display time accuracy is improved.
[0034] The above is only the preferred embodiment of the utility model. It should be pointed out that for those of ordinary skill in the art, without departing from the principle of the utility model, several improvements and modifications can be made, and these improvements and modifications should also be regarded as the protection scope of the utility model.
Claims
1. An environmental monitoring device based on Beidou time service, characterized in that, It includes a Beidou timing module, a sensor module, a main control module, and a display module; The Beidou timing module, the sensor module, and the display module are respectively electrically connected to the main control module; The Beidou timing module includes a signal acquisition unit, a preprocessing unit, a control unit, a storage unit, a clock unit, and a time data distribution unit; The signal acquisition unit is electrically connected to the preprocessing unit; The preprocessing unit is electrically connected to the control unit; The storage unit is electrically connected to the control unit; The preprocessing unit, the control unit, and the storage unit are respectively electrically connected to the clock unit; The control unit and the storage unit are respectively electrically connected to the time data distribution unit.
2. The environmental monitoring device based on Beidou time service according to claim 1, characterized in that: The signal acquisition unit includes a long-wave antenna, and the long-wave antenna is electrically connected to the preprocessing unit.
3. An environmental monitoring device based on Beidou time service according to claim 1, characterized in that: The preprocessing unit includes an operational amplifier, a filter, and an analog-to-digital converter. The operational amplifier, the filter, and the analog-to-digital converter are sequentially electrically connected, and the operational amplifier is electrically connected to the main control module.
4. The environmental monitoring device based on Beidou time service according to claim 1, characterized in that: The control unit includes a microcontroller. The microcontroller includes a microprocessor and a memory interface. The memory interface is electrically connected to the microprocessor, and the preprocessing unit is electrically connected to the microprocessor.
5. The environmental monitoring device based on Beidou time service according to claim 4, characterized in that: The storage unit includes a dynamic memory and a static memory. The dynamic memory and the static memory are respectively electrically connected to the memory interface.
6. The environmental monitoring device based on Beidou time service according to claim 4, characterized in that: The time data distribution unit includes an RS232 interface chip and an RS422 interface chip. The RS232 interface chip and the RS422 interface chip are respectively electrically connected to the microprocessor.
7. An environmental monitoring device based on Beidou time service according to claim 1, characterized in that: The clock unit includes an active crystal oscillator. The preprocessing unit, the control unit, and the storage unit are respectively electrically connected to the active crystal oscillator.
8. The environmental monitoring device based on Beidou time service according to claim 1, wherein: The sensor module includes a temperature sensor, a humidity sensor, an atmospheric sensor, an anemometer, a PM2.5 sensor, and a light intensity sensor. The temperature sensor, the humidity sensor, the atmospheric sensor, the anemometer, the PM2.5 sensor, and the light intensity sensor are respectively electrically connected to the main control module.
9. The environmental monitoring device based on Beidou time service according to claim 1, characterized in that: The main control module includes a main control chip, a UART interface, an RS485 interface, and a HUB12 interface. The main control chip is respectively electrically connected to the UART interface and the RS485 interface. The UART interface is electrically connected to the Beidou timing module. The RS485 interface is electrically connected to the sensor module. The HUB12 interface is electrically connected to the display module.
10. The environmental monitoring device based on Beidou time service according to claim 9, characterized in that: The display module includes an LED display screen, and the HUB12 interface is electrically connected to the LED display screen.