Vehicle-mounted piezoelectric rainfall measuring device

Abstract

The invention provides a vehicle-mounted piezoelectric rainfall measuring device, which relates to the technical field of meteorological rainfall detection, and comprises a piezoelectric sensor, a horizontal tilt angle sensor and a controller, the piezoelectric sensor and the horizontal tilt angle sensor are arranged in parallel; the piezoelectric sensor is used for acquiring initial rainfall; the horizontal tilt angle sensor is used for measuring the horizontal tilt angle of the piezoelectric sensor; and the controller corrects the initial rainfall according to the horizontal inclination angle to obtain corrected rainfall. According to the invention, urban high-density vehicles are utilized to form an urban rainfall measurement network, and high-resolution urban area rainfall data are obtained.

Description

Technical Field

[0001] The invention relates to the technical field of meteorological rainfall monitoring, and in particular to a vehicle-mounted piezoelectric rainfall measuring device. Background Art

[0002] Against the backdrop of global climate change, extreme precipitation events occur frequently, especially sudden rainstorms in cities. How to conduct accurate and high-resolution rainfall monitoring is the key to improving the city's ability to respond to meteorological disasters and a means to protect people's lives and property and economic development.

[0003] There are three traditional methods for urban rainfall monitoring: satellite inversion rainfall, radar inversion rainfall and ground rain gauge (fixed) rainfall measurement. However, the above three methods have obvious limitations in monitoring urban rainfall. Satellites are passive remote sensing devices. They observe from top to bottom, cannot penetrate the clouds, and cannot directly observe ground rainfall. Therefore, the satellite inversion rainfall error is relatively large and the temporal and spatial resolution is not high. Weather radars or rain radars are blocked and reflected by tall buildings in the city. There are a lot of blind spots and non-rainfall clutter when observing the city. Ground rain gauges are fixed point measurement devices. They can only measure rainfall at a certain point. To obtain high-resolution surface rainfall, it is necessary to deploy large-scale and large numbers of ground rain gauges, and the urban underlying surface cannot meet this requirement. Therefore, cheap, high-precision, and high-temporal and spatial resolution monitoring of rainfall is still an important technical issue at present. Summary of the invention

[0004] The purpose of the present invention is to provide a vehicle-mounted piezoelectric rainfall measuring device, which utilizes high-density urban vehicles to form an urban rainfall measurement network to obtain high-resolution urban surface rainfall data.

[0005] A vehicle-mounted piezoelectric rainfall measuring device, comprising: a piezoelectric sensor, a horizontal inclination sensor and a controller; The piezoelectric sensor is arranged in parallel with the horizontal tilt sensor; The piezoelectric sensor is used to obtain the initial rainfall; The horizontal inclination sensor is used to measure the horizontal inclination of the piezoelectric sensor; The controller corrects the initial rainfall according to the horizontal inclination angle to obtain a corrected rainfall; the correction expression is: ; Where: To correct for rainfall, is the initial rainfall, is the horizontal inclination angle. Optionally, the device further comprises a GPS module and an antenna; The GPS module acquires the latitude and longitude and the vehicle speed based on the antenna; The controller determines the vehicle speed. If the vehicle speed is less than or equal to a set threshold, the controller controls the piezoelectric sensor to obtain the initial rainfall, controls the horizontal inclination sensor to measure the horizontal inclination of the piezoelectric sensor, and corrects the initial rainfall according to the horizontal inclination to obtain the corrected rainfall. If the vehicle speed is greater than the set threshold, the controller controls the piezoelectric sensor and the horizontal inclination sensor to stop working.

[0006] Optionally, the device further comprises a transmission module; The transmission module uploads the longitude and latitude and the corrected rainfall to the cloud based on the antenna.

[0007] Optionally, the device further comprises a magnetic base and a sealing frame; The lower end surface of the magnetic base is fixedly attached to the vehicle by adsorption; the sealing frame is fixedly arranged on the upper end surface of the magnetic base; The GPS module, the transmission module, the horizontal tilt sensor and the controller are all fixedly arranged in the sealing frame; the piezoelectric sensor is fixed on the upper end surface of the sealing frame; The antenna is fixed on the outer side of the sealing frame.

[0008] Optionally, the device further comprises a solar panel and a battery; The battery is fixedly arranged in the sealing frame; the solar panel charges the battery; and the battery supplies power to the controller.

[0009] Optionally, the set threshold is 30km / h.

[0010] Optionally, the transmission module uploads the longitude and latitude and the corrected rainfall to the cloud at a set time interval based on the antenna.

[0011] Optionally, the set time interval is 5 minutes.

[0012] The effects of the present invention are as follows: The vehicle-mounted piezoelectric rainfall measuring device of the present invention utilizes high-density urban vehicles to form an urban rainfall measuring network and utilizes an inclination sensor to correct rainfall, thereby enabling low-cost, high-precision, and high-temporal-space resolution urban surface rainfall monitoring. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of the vehicle-mounted piezoelectric rainfall measuring device of the present invention.

[0014] In the figure: 1. Piezoelectric sensor; 2. Antenna; 3. Magnetic base; 4. Solar panel; 5. Sealing frame. DETAILED DESCRIPTION

[0015] Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[0016] Figure 1 1 is a structural diagram of the vehicle-mounted piezoelectric rainfall measuring device of the present invention. Figure 1 As shown, the present invention provides a vehicle-mounted piezoelectric rainfall measuring device, which includes: a piezoelectric sensor 1, a magnetic base 3 and a sealing frame 5.

[0017] The lower end surface of the magnetic base 3 is fixed by adsorption to the vehicle, the sealing frame 5 is fixedly arranged on the upper end surface of the magnetic base 3, and the piezoelectric sensor 1 is fixed on the upper end surface of the sealing frame 5. Preferably, the lower end surface of the magnetic base 3 is fixed by adsorption to the top of the vehicle. The piezoelectric sensor 1 adopts a piezoelectric ceramic with an arc-shaped steel cover, with a diameter of 100-150mm and a thickness of 2-5cm. The magnetic base 3 is formed by a combination of 4-8 pieces of NdFeB strong magnetic patches.

[0018] The sealing frame 5 is fixedly provided with a horizontal inclination sensor, a controller, a GPS module, a transmission module and a battery.

[0019] The piezoelectric sensor 1 is arranged in parallel with the horizontal tilt sensor. The piezoelectric sensor 1 is used to obtain the initial rainfall. The horizontal tilt sensor is used to measure the horizontal tilt of the piezoelectric sensor 1. The horizontal tilt sensor adopts a dual-axis tilt sensor with a measurement range of >10 degrees, an accuracy of ≤0.05, an output frequency of >10Hz, and supports an RS232 interface.

[0020] The controller corrects the initial rainfall according to the horizontal inclination angle to obtain the corrected rainfall. The controller uses ARM11 quad-core, 256M memory, and runs the Linux system. The correction expression is: ; Where: To correct for rainfall, is the initial rainfall, is the horizontal inclination.

[0021] Preferably, the device also includes an antenna 2. The GPS module obtains the longitude and latitude and the vehicle speed based on the antenna 2. The controller judges the vehicle speed. If the vehicle speed is less than or equal to the set threshold, the controller controls the piezoelectric sensor 1 to obtain the initial rainfall, controls the horizontal inclination sensor to measure the horizontal inclination of the piezoelectric sensor 1, and corrects the initial rainfall according to the horizontal inclination to obtain the corrected rainfall. If the vehicle speed is greater than the set threshold, the controller controls the piezoelectric sensor 1 and the horizontal inclination sensor to stop working. The threshold is set to 30km / h. The positioning accuracy of the GPS module is ≤2 meters, the output frequency is >1HZ, and it supports the RS232 interface.

[0022] The transmission module uploads the longitude and latitude and the corrected rainfall to the cloud based on antenna 2. The transmission module uploads the longitude and latitude and the corrected rainfall to the cloud based on antenna 2 at the set time interval. The set time interval is 5 minutes. The 5G module supports 3G, 4G, and 5G network standards and uses an RS232 interface to connect to the controller.

[0023] The antenna 2 is fixed on the outer side of the sealing frame 5 .

[0024] Furthermore, the device also includes a solar panel 4 .

[0025] The solar panel 4 charges the battery, and the battery supplies power to the controller. The solar panel 4 uses a 5V 60mA-200mA solar panel, and the battery is a 5V 2000mA or more rechargeable lithium battery.

[0026] The above embodiments are only descriptions of the preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A vehicle-mounted piezoelectric rainfall measuring device, characterized in that: It includes: Piezoelectric sensors, horizontal tilt sensors and controllers; The piezoelectric sensor is arranged in parallel with the horizontal tilt sensor; The piezoelectric sensor is used to obtain the initial rainfall; The horizontal inclination sensor is used to measure the horizontal inclination of the piezoelectric sensor; The controller corrects the initial rainfall according to the horizontal inclination angle to obtain a corrected rainfall; The corrected expression is: ; Where: To correct for rainfall, is the initial rainfall, is the horizontal inclination.

2. The vehicle-mounted piezoelectric rainfall measuring device according to claim 1, characterized in that: The device also includes a GPS module and an antenna; The GPS module acquires the latitude and longitude and the vehicle speed based on the antenna; The controller determines the vehicle speed. If the vehicle speed is less than or equal to a set threshold, the controller controls the piezoelectric sensor to obtain the initial rainfall, controls the horizontal inclination sensor to measure the horizontal inclination of the piezoelectric sensor, and corrects the initial rainfall according to the horizontal inclination to obtain the corrected rainfall. If the vehicle speed is greater than the set threshold, the controller controls the piezoelectric sensor and the horizontal inclination sensor to stop working.

3. The vehicle-mounted piezoelectric rainfall measuring device according to claim 2, characterized in that: The device also includes a transmission module; The transmission module uploads the longitude and latitude and the corrected rainfall to the cloud based on the antenna.

4. The vehicle-mounted piezoelectric rainfall measuring device according to claim 3, characterized in that: The device also includes a magnetic base and a sealing frame; The lower end surface of the magnetic base is fixedly attached to the vehicle by adsorption; the sealing frame is fixedly arranged on the upper end surface of the magnetic base; The GPS module, the transmission module, the horizontal tilt sensor and the controller are all fixedly arranged in the sealing frame; the piezoelectric sensor is fixed on the upper end surface of the sealing frame; The antenna is fixed on the outer side of the sealing frame.

5. The vehicle-mounted piezoelectric rainfall measuring device according to claim 4, characterized in that: The device also includes a solar panel and a battery; The battery is fixedly arranged in the sealing frame; the solar panel charges the battery; and the battery supplies power to the controller.

6. The vehicle-mounted piezoelectric rainfall measuring device according to claim 2, characterized in that: The set threshold is 30km / h.

7. The vehicle-mounted piezoelectric rainfall measuring device according to claim 3, characterized in that: The transmission module uploads the longitude and latitude and the corrected rainfall to the cloud based on the antenna at a set time interval.

8. The vehicle-mounted piezoelectric rainfall measuring device according to claim 7, characterized in that: The set time interval is 5 minutes.

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