In the construction of the hydrological automatic monitoring and reporting system and in the face of flash flood control, the previous technology can only set up relevant points in some important rivers to obtain the corresponding data information. Most of the rivers that need to be monitored are widely distributed, wide in area, and have many stations, especially in the characteristics of fast confluence speed and steep rise and fall of flood rivers. The poor environment makes it difficult to test and make it impossible to set up a site and thus obtain data. In order to provide more favorable data support for relevant departments and solve the pain points and difficulties in the current environment, the cable current measurement system was born. As an advanced current measurement technology, the cable current measurement system has attracted attention for its high precision and high efficiency. In this article, we will present a live case that demonstrates the advantages and value of a dual-track mobile cable radar current measurement system in practical applications.
Equipment composition: The system is composed of radar velocity meter, radar running vehicle, system controller, radar speed controller, charging box, battery, radio station, telemetry terminal, GPRS communication module, water level gauge (float, bubble or radar) and central station platform software.
On-site exploration: understand and be familiar with the installation site, comprehensively consider the design of the system application scheme according to the actual situation of the river section and the relevant hydrological data on the site, and form a preliminary implementation plan by collating and designing a number of data. The construction of hydrological cableway requires reference to the topography, geomorphology and geological conditions of the river section where the station section is located. For the laying of hydrological cables, it is necessary to ensure the stability of the bearing cable support and the ground anchor foundation on both sides of the river, and to ensure the safety of the cableway during the design.
The focus of the design is to conduct on-site surveys and collect relevant information about the installation site, including topography, address and geomorphology, hydrometeorological data of the station, etc., as the basis for determining the overall layout and structural support of the cableway. The hydrological cable is a cross-river flow measurement and sand extraction equipment, and its main design should consider both its flood measurement ability and flood resistance ability. In general, the erection elevation should be designed according to the historical maximum flood level, and the strength of each component should be designed according to the local maximum wind force or wind speed and the maximum water depth and flow rate used.
Equipment structure: radar running vehicle: the main function is to carry the speed radar sensor through the double-track wire rope to the middle of the river above the perpendicular line that needs to be measured.
Main features of the radar running vehicle:
1.Two stainless steel wire ropes with a diameter of 5mm are used as the tracks, and the hydrodynamic design of the shell ensures the smooth operation of the radar trolley and is not affected by wind and rain.
2.The stepper motor is used to ensure that the span is too large or there is a slope to be able to drive normally.
3.The socket charging structure is adopted to ensure the stability, reliability and durability of charging.
4.The charging system adopts fully automatic constant current and constant voltage charging.
5.Using high-performance lithium battery as power, the battery voltage is completely controlled by the motherboard, and the battery is charged intelligently.
6.When the radar operator approaches the end point on the way back, it actively slows down until the metal proximity switch touches the trigger point.
7.The radar running vehicle will have an automatic acceleration and deceleration function when starting or stopping when measuring each perpendicular line of speed measurement to reduce shaking.
8.The distance between the starting point can be accurately and automatically calculated, so that it can accurately reach the top of each speed perpendicular.
9.If the radar operation vehicle judges any abnormal conditions, such as: the battery voltage is too low; Abnormal radar speed measurement, etc. The car will automatically return to the charging pile (origin) and report the corresponding error message.
10.The radar vehicle will take the initiative to report the number of perpendicular lines and the current battery voltage above each speed measurement perpendicular, so as to facilitate the understanding of the operation process of the radar operating vehicle.
11.If the battery voltage of the radar operating vehicle exceeds the set lower limit, it will actively request charging to ensure that the lithium battery of the radar operating vehicle is sufficient. On the contrary, if the lithium battery voltage of the radar operation vehicle reaches the peak, it will actively request to disconnect the charging.
The dual-track mobile cable radar current measurement system is an efficient and accurate current measurement equipment, and its application cases have proved its reliability and effectiveness in the actual field. With the continuous advancement of science and technology, it is believed that this advanced flow measurement system will play an increasingly important role in the field of hydrology, providing better support for water resources management and flood early warning. Efficient working capacity. Thanks to the automated measurement method, the system can complete a large number of measurement tasks in a short time, which increases work efficiency. The staff only needs to set the measurement path and parameters, and the system can navigate and drive autonomously without manual intervention, reducing the workload.