CN-224202438-U - Radial gate opening detection device based on gravitational acceleration detection

Abstract

The radial gate opening detection device based on the gravity acceleration detection comprises a gravity acceleration detection unit, wherein the gravity acceleration detection unit is electrically connected with an MCU (micro control unit) through an A/D (analog to digital) conversion module, the MCU is electrically connected with a PLC (programmable logic controller) through an RS485 communication module, and the gravity acceleration detection unit is arranged on a support arm of the radial gate and is used for detecting a gravity acceleration component of the point parallel to a mounting surface and perpendicular to the axis direction of circular motion of the radial gate around a hinge. The gravity acceleration detection unit can be arranged at any position on the gate support arm, so that the site construction is convenient, and the risk of construction accidents is reduced.

Inventors

• HE CONG

Assignees

• 宜昌长控自动化科技有限公司

Dates

Publication Date

20260505

Application Date

20250613

Claims (9)

1. 1. The radial gate opening detection device based on gravity acceleration detection is characterized by comprising a gravity acceleration detection unit, wherein the gravity acceleration detection unit is electrically connected with an MCU microprocessor through an A/D conversion module, the MCU microprocessor is electrically connected with a PLC programmable controller through an RS485 communication module, and the gravity acceleration detection unit is arranged on a support arm of the radial gate and is used for detecting a gravity acceleration component of the point parallel to a mounting surface and perpendicular to the axial direction of circular motion of the radial gate around a support hinge.
2. 2. The radial gate opening detection device based on the gravity acceleration detection according to claim 1, wherein a signal conditioning and hardware filtering unit is further arranged between the gravity acceleration detection unit and the A/D conversion module.
3. 3. The radial gate opening detection device based on gravitational acceleration detection according to claim 1, wherein a communication isolation and instantaneous overvoltage protection module is further arranged between the RS485 communication module and the PLC.
4. 4. The radial gate opening detection device based on gravitational acceleration detection as claimed in claim 3, wherein the communication protocol is transmitted to the PLC by Modbus-RTU protocol.
5. 5. The radial gate opening detection device based on gravitational acceleration detection as claimed in claim 1, further comprising a 9-30VDC power supply, wherein the power supply is subjected to voltage conversion by a DC/DC converter after passing through the power protection module, and then the whole device is powered.
6. 6. The radial gate opening detection device based on gravitational acceleration detection as claimed in claim 1, wherein one or two gravitational acceleration detection units are provided.
7. 7. The radial gate opening detection device based on the gravitational acceleration detection of claim 6, wherein two gravitational acceleration detection units are arranged on the left side and the right side of the support arm respectively.
8. 8. The radial gate opening detection device based on gravitational acceleration detection of claim 1, wherein the gravitational acceleration detection unit is packaged in a waterproof box.
9. 9. The radial gate opening detection device based on gravitational acceleration detection of claim 1, wherein the gravitational acceleration detection unit is an ADXL206 gravitational acceleration sensor.

Description

Radial gate opening detection device based on gravitational acceleration detection Technical Field The utility model relates to the technical field of arc gate opening detection, in particular to an arc gate opening detection device based on gravitational acceleration detection. Background The arc gate is characterized in that the arc gate is a gate with a water blocking surface which is a part of arc surface of a cylinder, the supporting hinge center of the supporting arm is positioned at the circle center of the circular motion of the arc gate, and the arc gate body rotates around the supporting hinge when the arc gate is opened or closed. The arc door body consists of door pages, support arms and supporting hinges, as shown in figures 1 and 2, and all parts except the supporting hinge support in the dotted line circle belong to the arc door body. The existing arc door opening detection sensor generally adopts the following schemes: 1. a magnetostrictive displacement sensor of the auxiliary pull cylinder; 2. a wire rope displacement sensor; 3. ceramic piston rod type displacement sensor. The detection schemes are essentially linear displacement sensors which are arranged on the arc door driving oil cylinder, directly or indirectly measure the displacement of the piston, and then directly convert the displacement value of the piston or obtain the arc door opening by a method of on-site multistage actual measurement opening and multipoint calibration interpolation calculation. In the actual combat, many diseases exist in the technical schemes, and the problems are also gradually become pain points of the industry, and the following are exemplified in part: 1. The main problem of the auxiliary pull cylinder is that the opening degree measurement is inaccurate, the error is large, especially for the arc door double cylinders, correction control is needed, the correction is often not performed, the correction is performed by mistake, and the arc door is often caused to run to be stuck or the arc door is caused to be out of tolerance to give an alarm to cause fault shutdown. The core element used by the auxiliary pull cylinder is a magnetostrictive displacement sensor, and most of the auxiliary pull cylinder is imported (foreign brands such as Baruff and ASM), so that the auxiliary pull cylinder has long shelf life and high price. 2. For the steel wire rope type displacement sensor, floats in water are easily wound on the steel wire rope to influence the measurement accuracy and even cause the sensor to fail and be damaged, and the steel wire rope and related metal accessories are soaked in the water for a long time to accelerate corrosion, so that the service life is greatly shortened. 3. The steel wire rope is also internally arranged, and the steel wire rope for measuring the displacement of the piston is internally arranged in the oil cylinder, so that although the steel wire rope is prevented from being exposed outside the oil cylinder and easy to damage accidentally, the steel wire rope is prevented from being damaged accidentally, but a new problem is brought in the practical application of many hydropower stations, once the steel wire rope in the steel wire rope is broken, the maintenance is very troublesome, and many users are hard to say. 4. The ceramic piston rod type measuring mode is similar to the accumulating counting mode of an incremental encoder, the current counting data is easy to lose when the equipment is subjected to sudden power failure, and when flood discharge occurs, the arc door which stops running severely shakes to drive the piston to shake, and sometimes the counter can count by mistake, so that the wrong opening data is caused. The scale marks engraved on the piston rod for measuring and counting can fail after encountering heavy floaters such as wood or other unexpected heavy objects in water, and the whole cylinder piston needs to be disassembled and returned to a factory for maintenance to repair. 5. In the north cold season, the wire rope type sensor may be frozen, and once the gate is operated, the sensors fixed on the oil cylinder and the piston are instantaneously damaged by the strong traction force of the oil cylinder. 6. The schemes have the defects of troublesome calibration, calculation and debugging, the requirements on skills, experience and responsibility of the debugging personnel are very high, and if the debugging work is not in place, the basic performance of the sensor cannot be embodied at all. 7. The solutions are all mechanical moving parts, and long-term reliability and stability are difficult to ensure in severe use environments. The analysis is not possible, and is a real and ubiquitous problem and phenomenon of the hydraulic hoist in the application field of water conservancy and hydropower. Disclosure of Invention The utility model aims to provide a radial gate opening detection device based on gravitational acceleration detection so as to solve the te