A multi-point radar wave on-line flow measurement system based on short-distance transmission

Abstract

The utility model provides a kind of multi-point radar wave on-line flow measurement system based on short distance transmission, including radar current meter, radar water level gauge, main probe acquisition device, slave probe acquisition device and display application end;Radar current meter is used to collect the water flow rate of river channel, radar water level gauge is used to collect the water level of river channel, slave probe acquisition device has multiple, for collecting the multi-point flow rate of river channel section, it is short distance transmission to main probe acquisition device by LoRa communication module, main probe acquisition device only has one, for collecting the point flow rate and water level of river channel section, and the flow rate data of multiple slave probe acquisition devices is gathered and processed, after real-time flow data is accurately calculated using flow area method and flow calculation model, it is sent to display application end.The present application has realized the measurement of the multi-point flow rate of river channel section, and improved the accuracy of river flow test. And low-power wide-area internet of things is built by using LoRa technology, short distance transmission of data can be realized, and has the advantages of convenient installation and maintenance.

Description

Technical Field

[0001] This utility model relates to the field of water conservancy and hydrology technology, and in particular to a multi-point radar wave online flow measurement system based on short-range transmission. Background Technology

[0002] Radar technology has developed rapidly in hydrological surveying, and has become a discipline that uses radar as a detection tool to study hydrology. Fixed-wave online flow measurement systems utilize radar waves to measure river surface velocity without contacting the water flow. Combined with real-time water level data measured by a water level gauge, and using the velocity-area method, they accurately calculate real-time flow data and are widely used for flow measurement in small and medium-sized rivers. However, single-point radar wave flow measurement systems have low data reliability and accuracy, and no longer meet the requirements of hydrological surveying. Utility Model Content

[0003] To address the aforementioned issues, this utility model discloses a multi-point radar wave online flow measurement system based on short-range transmission, enabling the measurement of flow velocity at multiple points along a river cross-section, significantly improving the accuracy of river flow measurement. Furthermore, the use of LoRa technology to build a low-power wide-area Internet of Things (IoT) system allows for short-range data transmission and offers advantages such as convenient installation and maintenance.

[0004] The specific plan is as follows:

[0005] A multi-point radar wave online flow measurement system based on short-range transmission is characterized by comprising a radar current meter, a radar water level gauge, a main probe acquisition device, slave probe acquisition devices, and a display application terminal. The radar current meter is used to collect the water flow velocity of the river channel, the radar water level gauge is used to collect the water level of the river channel, and there are multiple slave probe acquisition devices used to collect the multi-point flow velocity of the river channel cross-section. The flow velocity data is transmitted to the main probe acquisition device over a short distance via a LoRa communication module. There is only one main probe acquisition device, which is used to collect the point flow velocity and water level of the river channel cross-section, and to collect and process the flow velocity data from multiple slave probe acquisition devices. After accurately calculating the real-time flow data using the flow velocity area method and the flow calculation model, the data is sent to the display application terminal.

[0006] Furthermore, the main probe acquisition device includes a LoRa communication module, an RTU, a radar current meter, and a radar level gauge, wherein the LoRa communication module of the main probe acquisition device is connected to the RTU, and the RTU is connected to the radar current meter and the radar level gauge.

[0007] Furthermore, the main probe acquisition device is also equipped with a GPRS module connected to the RTU.

[0008] Furthermore, the probe acquisition device includes a LoRa communication module, an RTU, and a radar current meter, wherein the LoRa communication module of the probe acquisition device is connected to the RTU, and the RTU is connected to the radar current meter.

[0009] Furthermore, both the main probe acquisition device and the slave probe acquisition device are equipped with solar power modules for power supply.

[0010] Furthermore, the solar power module includes a power supply, a charging management unit, a protection unit, and a battery connected in sequence. The battery is connected to a buck unit and a boost unit. The charging management unit is used to manage the charging of the lithium battery. The protection unit is used to stop charging when the battery voltage is higher than the maximum charging threshold voltage. The buck unit and the boost unit perform buck and boost voltage respectively to provide a stable and suitable voltage to other electronic components.

[0011] Furthermore, there are no fewer than three acquisition devices from the probe.

[0012] Furthermore, the display application terminal includes a mobile app or a PC.

[0013] The beneficial effects of this invention are as follows: By using LoRa technology to build a low-power wide-area Internet of Things (IoT), data can be transmitted over short distances, and river flow velocity data can be collected from multiple points, greatly improving the accuracy of river flow measurement. This application features fixed non-contact measurement, high-precision measurement, real-time monitoring, convenient installation and maintenance, and stable data transmission. Flow measurement is unaffected by location or flow state, and remote downloading is possible. Attached Figure Description

[0014] Figure 1 This is a system block diagram of this application.

[0015] Figure 2 This is a schematic diagram of the solar power module in this application. Detailed Implementation

[0016] The present invention will be further explained below with reference to the accompanying drawings and specific embodiments. It should be understood that the following specific embodiments are only used to illustrate the present invention and are not intended to limit the scope of the present invention.

[0017] As shown in the figure, this utility model provides a multi-point radar wave online flow measurement system based on short-range transmission, including a radar current meter, a radar water level gauge, a main probe acquisition device, slave probe acquisition devices, and a display application terminal. The radar current meter is used to collect the water flow velocity of the river channel, the radar water level gauge is used to collect the water level of the river channel, and there are multiple slave probe acquisition devices used to collect the multi-point flow velocity of the river channel cross-section. The flow velocity data is transmitted to the main probe acquisition device over a short distance via a LoRa communication module. There is only one main probe acquisition device, which is used to collect the point flow velocity and water level of the river channel cross-section, and to collect and process the flow velocity data from multiple slave probe acquisition devices. After accurately calculating the real-time flow data using the flow velocity area method and the flow rate calculation model, the data is sent to the display application terminal.

[0018] In this embodiment, the main probe acquisition device includes a LoRa communication module, an RTU, a radar current meter, and a radar water level gauge. The LoRa communication module of the main probe acquisition device is connected to the RTU, and the RTU is connected to the radar current meter and the radar water level gauge.

[0019] In this embodiment, the main probe acquisition device is also equipped with a GPRS module connected to the RTU.

[0020] In this embodiment, the probe acquisition device includes a LoRa communication module, an RTU, and a radar current meter. The LoRa communication module of the probe acquisition device is connected to the RTU, and the RTU is connected to the radar current meter.

[0021] In this embodiment, both the main probe acquisition device and the slave probe acquisition device are equipped with solar power modules for power supply. The solar power module includes a power supply, a charging management unit, a protection unit, and a battery connected in sequence. The battery is connected to a buck unit and a boost unit. The charging management unit is an LTC405, used for charging management of the lithium battery. The protection unit uses an FDFMA2P853 chip to stop charging when the battery voltage exceeds the maximum charging threshold voltage. The battery is a lithium battery with a voltage between 3.7V and 4.1V. To provide a stable and suitable voltage to other electronic components, buck and boost units are used for buck and boost voltage respectively. Depending on the specific components, the buck and boost units can be replaced with other chips capable of converting to a suitable voltage.

[0022] In this embodiment, there are no fewer than three probe acquisition devices.

[0023] In this embodiment, the display application terminal includes a mobile app or a PC.

[0024] This invention utilizes LoRa technology to build a low-power wide-area Internet of Things (IoT) system, enabling short-distance data transmission and multi-point collection of river flow velocity data, thereby significantly improving the accuracy of river flow measurement. Furthermore, this invention features fixed non-contact measurement, high-precision measurement, real-time monitoring, convenient installation and maintenance, and stable data transmission. Flow measurement is unaffected by location or flow state, and remote downloading is possible.

[0025] The technical means disclosed in this utility model are not limited to those disclosed in the above embodiments, but also include technical solutions composed of any combination of the above technical features. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications are also considered within the scope of protection of this utility model.

Claims

1. A multi-point radar wave online flow measurement system based on short-range transmission, characterized in that, The system includes a radar current meter, a radar water level gauge, a main probe acquisition device, slave probe acquisition devices, and a display application terminal. The radar current meter is used to collect the water flow velocity in the river channel, the radar water level gauge is used to collect the water level in the river channel, and there are multiple slave probe acquisition devices used to collect the flow velocity at multiple points in the river channel cross-section. The flow velocity is transmitted to the main probe acquisition device over a short distance via a LoRa communication module. There is only one main probe acquisition device, which is used to collect the point flow velocity and water level in the river channel cross-section, and to collect and process the flow velocity data from multiple slave probe acquisition devices. After accurately calculating the real-time flow data using the flow velocity area method and the flow calculation model, the data is sent to the display application terminal.

2. The online flow measurement system for multi-point radar waves based on short-range transmission according to claim 1, characterized in that, The main probe acquisition device includes a LoRa communication module, an RTU, a radar current meter, and a radar water level gauge. The LoRa communication module of the main probe acquisition device is connected to the RTU, and the RTU is connected to the radar current meter and the radar water level gauge.

3. The online flow measurement system for multi-point radar waves based on short-range transmission according to claim 2, characterized in that, The main probe acquisition device is also equipped with a GPRS module connected to the RTU.

4. The online flow measurement system for multi-point radar waves based on short-range transmission according to claim 2, characterized in that, The probe acquisition device includes a LoRa communication module, an RTU, and a radar current meter. The LoRa communication module of the probe acquisition device is connected to the RTU, and the RTU is connected to the radar current meter.

5. The online flow measurement system for multi-point radar waves based on short-range transmission according to claim 3, characterized in that, Both the main probe acquisition device and the slave probe acquisition device are equipped with solar power modules for power supply.

6. The online flow measurement system for multi-point radar waves based on short-range transmission according to claim 5, characterized in that, The solar power module includes a power supply, a charging management unit, a protection unit, and a battery connected in sequence. The battery is connected to a buck unit and a boost unit. The charging management unit is used to manage the charging of the lithium battery. The protection unit is used to stop charging when the battery voltage is higher than the maximum charging threshold voltage. The buck unit and the boost unit perform buck and boost voltage respectively to provide a stable and suitable voltage to other electronic components.

7. The online flow measurement system for multi-point radar waves based on short-range transmission according to claim 1, characterized in that, The number of probe acquisition devices shall be no less than three.

8. The online flow measurement system for multi-point radar waves based on short-range transmission according to claim 1, characterized in that, The display application terminal includes a mobile app or a PC.

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