Off-line calibration system for height gauge and encoder of gate hoist

Abstract

The utility model relates to the technical field of gate hoist related equipment, in particular to a gate hoist height gauge and encoder off-line calibration system which comprises a receiving unit and a transmitting unit. The receiving unit comprises a man-machine interaction module and an encoder driving module, the man-machine interaction module is electrically connected with the encoder driving module, and the encoder driving module is used for driving a target encoder to rotate; the transmitting unit comprises a wiring module and a serial port signal conversion module, the target encoder is electrically connected with the wiring module, the wiring module is electrically connected with the serial port signal conversion module, and the serial port signal conversion module is used for being connected with a target height gauge. According to the utility model, by simulating the installation mode and the communication connection of the height gauge and the encoder of the gate hoist, the calibration work of the height gauge and the encoder can be safely and efficiently completed in an off-line state, and the influence on the output of a generator set due to the fact that the gate hoist system exits from an operation state for a long time is greatly reduced.

Description

Technical Field

[0001] This utility model relates to the technical field of gate hoisting equipment, specifically to a gate hoisting height gauge and encoder offline calibration system. Background Technology

[0002] Each gate hoist in a hydropower station is equipped with a gate position detection device (hereinafter referred to as an encoder) and a gate position display device (hereinafter referred to as an altimeter) for real-time monitoring and control of the gate position. Since each gate in a hydropower station is a regulating device and is related to the safe and stable operation of the generator unit, the gate position signal is particularly important.

[0003] When the height gauge or encoder of the gate hoist malfunctions and needs to be replaced, the gate needs to be raised and lowered for recalibration. The gate hoist operation conditions are quite demanding, requiring either offline calibration or online calibration during unit shutdown. Online calibration refers to requesting gate operation from dispatch while the unit is shut down after installing the new height gauge or encoder, and sequentially calibrating the gate at each position (generally four positions: fully closed, filling with water, fully open, and maintenance). Offline calibration currently primarily uses manual calibration, which involves manually rotating the encoder to simulate gate operation and calibrating the new height gauge and encoder offline based on the historical code values ​​recorded on the original height gauge for each gate position (generally four positions: fully closed, filling with water, fully open, and maintenance). The above-mentioned existing technologies have the following problems: (1) Low reliability. The existing offline manual calibration requires manually rotating the encoder to the target code value. This process has problems of low accuracy and large error. In addition, the height meter and encoder are easily damaged when the manual rotation speed is uneven. (2) Large limitations. The existing online calibration requires the unit to be shut down and the actual operation of the gate to be applied for by the dispatcher. The scope of the work is large. In addition, the existing offline manual calibration can only be used to calibrate the height meter offline. It cannot be used to calibrate the encoder in case of failure. (3) Poor safety. The existing online calibration requires personnel to stand on the top of the gate or install a temporary camera on the top of the gate to confirm the actual position and calibrate. The work process involves high-altitude operations. The fall height can reach hundreds of meters, which poses a high safety risk. (4) Serious time consumption. The existing online calibration and offline manual calibration are seriously time-consuming. When the unit is shut down, the gate is adjusted. Since the gate is out of operation for a long time, it directly affects the unit's timely return to operation and load output.

[0004] Therefore, how to achieve offline automatic calibration of the gate hoist height gauge and encoder is a technical problem that urgently needs to be solved. Utility Model Content

[0005] The purpose of this utility model is to provide an offline calibration system for gate hoist height gauges and encoders. By simulating the installation method and communication connection of gate hoist height gauges and encoders, the system can calibrate the height gauges and encoders offline. After calibration, the system can be directly installed into the field gate hoist system for use, achieving seamless integration. This solves the technical problem of how to achieve offline automatic calibration of gate hoist height gauges and encoders.

[0006] This utility model is achieved through the following technical solution: an offline calibration system for a gate opening and closing mechanism height gauge and encoder, comprising a receiving unit and a transmitting unit;

[0007] The receiving unit includes a human-machine interaction module and an encoder driving module. The signal output terminal of the human-machine interaction module is connected to the signal input terminal of the encoder driving module. The encoder driving module is used to drive the target encoder to rotate.

[0008] The transmitting unit includes a wiring module, and the signal output terminal of the target encoder is connected to the signal input terminal of the wiring module. The wiring module is used to connect to the target altimeter.

[0009] According to a preferred embodiment, the system further includes a communication module and a serial port signal conversion module. The signal output terminal of the target altimeter is connected to the signal input terminal of the serial port signal conversion module, and the signal output terminal of the serial port signal conversion module is connected to the signal input terminal of the human-machine interaction module via the communication module.

[0010] According to a preferred embodiment, the communication module is a wireless communication module, including a wireless transmitting submodule and a wireless receiving submodule. The signal output terminal of the serial port signal conversion module is connected to the signal input terminal of the wireless transmitting submodule, the signal output terminal of the wireless transmitting submodule is connected to the signal input terminal of the wireless receiving submodule, and the signal output terminal of the wireless receiving submodule is connected to the signal input terminal of the human-machine interaction submodule.

[0011] According to a preferred embodiment, the system further includes a protective enclosure, wherein the transmitting unit and the receiving unit are respectively housed within the protective enclosure.

[0012] According to a preferred embodiment, the protective enclosure is provided with a mounting base, and the wiring module, human-machine interaction module and encoder drive module are respectively mounted on the mounting bases in the corresponding protective enclosures.

[0013] According to a preferred embodiment, the mounting base inside the protective housing corresponding to the receiving unit is further provided with an encoder coupling and an encoder bracket. The encoder coupling is connected to the output shaft of the encoder drive module, and the encoder bracket is coaxially mounted with the encoder coupling.

[0014] According to a preferred embodiment, the encoder bracket has an axially formed annular groove adapted to the shape of the target encoder, and the target encoder is mounted on the side of the encoder bracket facing away from the coupling via the annular groove.

[0015] According to a preferred embodiment, the wiring module is a spring-loaded quick-connect wiring device.

[0016] According to a preferred embodiment, the encoder drive module is a stepper motor.

[0017] According to a preferred embodiment, the wireless transmitting submodule is mounted on a mounting base inside the protective enclosure corresponding to the transmitting unit, and the wireless receiving submodule is mounted on a mounting base inside the protective enclosure corresponding to the receiving unit.

[0018] The technical solution of the gate hoist height gauge and encoder offline calibration system provided by this utility model has at least the following advantages and beneficial effects: (1) By simulating the installation method and communication connection of the gate hoist height gauge and encoder, the calibration of the height gauge and encoder can be completed safely and efficiently in the offline state, which greatly reduces the impact of the gate hoist system on the generator output due to long-term shutdown; (2) The box design improves convenience. Attached Figure Description

[0019] Figure 1 This is a structural block diagram of the gate hoist height gauge and encoder offline calibration system provided in Embodiment 1 of this utility model;

[0020] Figure 2 A schematic diagram of the overall structure of the protective housing corresponding to the receiving unit provided in Embodiment 3 of this utility model;

[0021] Figure 3 This is a front view of the protective housing corresponding to the receiving unit provided in Embodiment 3 of this utility model;

[0022] Figure 4 This is a top view of the protective housing corresponding to the receiving unit provided in Embodiment 3 of this utility model;

[0023] Figure 5 A schematic diagram of the overall structure of the protective housing corresponding to the transmitting unit provided in Embodiment 3 of this utility model;

[0024] Figure 6 This is a front view of the protective housing corresponding to the transmitting unit provided in Embodiment 3 of this utility model;

[0025] Figure 7 This is a top view of the protective housing corresponding to the transmitting unit provided in Embodiment 3 of this utility model;

[0026] Reference numerals: 100-Receiver unit, 110-Human-machine interaction module, 120-Encoder drive module, 200-Transmitter unit, 210-Wiring module, 220-Serial port conversion module, 230 Safety button, 300-Communication module, 310-Wireless transmitter sub-module, 320-Wireless receiver sub-module, 400-Protective enclosure, 410-Mounting base, 500-Encoder coupling, 600-Encoder bracket, 610-Annular groove, 700-Target encoder, 800-Target altitude gauge, 900-Power supply module. Detailed Implementation

[0027] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this utility model, and not all embodiments. The components of the embodiments of this utility model described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0028] Example 1

[0029] See Figure 1 As shown, this embodiment provides an offline calibration system for a gate hoist height gauge and encoder, which includes a receiving unit 100 and a transmitting unit 200.

[0030] The receiving unit 100 includes a human-machine interaction module 110 and an encoder drive module 120. In some embodiments, the human-machine interaction module 110 is a serial port touch screen used to edit preset conditions, such as the target number of revolutions of the target encoder, the direction of rotation, and the rotation speed. In addition, the serial port touch screen also has basic start and stop function buttons to control the start and stop of the encoder drive module 120, which will not be described in detail here.

[0031] The signal output terminal of the human-machine interaction module 110 is connected to the signal input terminal of the encoder drive module 120, and is used to send the preset conditions to the encoder drive module 120. After receiving the preset conditions, the encoder drive module 120 drives the target encoder to rotate according to the set target number of revolutions, rotation direction, speed, etc., and executes the corresponding start and stop actions when it receives the start and stop command.

[0032] In some implementations, the system has automatic and manual modes. In the automatic mode, the preset conditions include the target number of revolutions, the direction of rotation, and the rotation speed. In this mode, the encoder drive module 120 can automatically drive the target encoder to rotate forward or backward to the target number of revolutions and then stop. In the manual mode, the preset conditions can be edited only for the target number of revolutions. In this mode, the target encoder can be manually controlled to rotate forward or backward to the target number of revolutions and then stop via the direction control function button set on the serial port touch screen.

[0033] The transmitting unit 200 includes a wiring module 210. In some embodiments, the signal output terminal of the target encoder is connected to the signal input terminal of the wiring module 210 via a cable. The wiring module 210 is used to connect to the target height meter, collect the real-time code value of the target encoder rotation, and send this SSI signal to the height meter for display. It should be noted that when calibrating the encoder, by connecting the encoder data, clock, and 12V signal of the target encoder to the wiring module 210, the target encoder rotates under the drive of the encoder drive module 120. At this time, the rotation code value can be viewed at the height meter. After confirming that the target encoder has reached the target code value, the target encoder can be installed into the gate hoist system to complete the encoder calibration. When calibrating the height meter, the target height meter is connected through the wiring module 210. After calibrating the target height meter at various positions (generally four positions: fully closed, water filling, fully open, and maintenance), it is reinstalled into the gate hoist system for operation to complete the height meter calibration.

[0034] Specifically, this embodiment simulates the installation method and communication connection of the gate hoist height gauge and encoder, which can safely and efficiently complete the calibration of the height gauge and encoder in offline mode, greatly reducing the impact of the gate hoist system being out of operation for a long time on the output of the generator set.

[0035] Example 2

[0036] This embodiment, based on the technical solution provided in Embodiment 1, further explains the communication method between the receiving unit 100 and the transmitting unit 200:

[0037] Specifically, the system also includes a communication module and a serial port signal conversion module. In some embodiments, the serial port signal conversion module is an SSI signal conversion instrument. The signal output terminal of the target altimeter is connected to the signal input terminal of the SSI signal conversion instrument to send the SSI signal to the SSI signal conversion instrument. The SSI signal is converted into a serial port signal by the SSI signal conversion instrument. The signal output terminal of the SSI signal conversion instrument is connected to the signal input terminal of the human-machine interaction module 110 via the communication module, and the real-time code value of the target encoder is synchronously displayed on the human-machine interaction module 110.

[0038] Furthermore, the communication module is a wireless communication module, including a wireless transmitting submodule and a wireless receiving submodule. The signal output terminal of the SSI signal converter is connected to the signal input terminal of the wireless transmitting submodule, the signal output terminal of the wireless transmitting submodule is connected to the signal input terminal of the wireless receiving submodule, and the signal output terminal of the wireless receiving submodule is connected to the signal input terminal of the human-machine interaction submodule, so as to send the serial port signal to the human-machine interaction submodule.

[0039] Specifically, the separate wireless connection between the transmitting unit 200 and the receiving unit 100 allows for complete adaptation to the structure of the on-site gate hoist.

[0040] Example 3

[0041] This embodiment further illustrates the structural design of the system based on the technical solutions provided in any one of Embodiments 1 to 2:

[0042] In some implementations, see Figures 2 to 7 As shown, it also includes a protective case, which is a portable case. The transmitting unit 200 and the receiving unit 100 are respectively housed in a protective case. While protecting the transmitting unit 200 and the receiving unit 100, it can also improve the overall portability.

[0043] Furthermore, each protective enclosure is equipped with a mounting base. The wiring module 210, the human-machine interface module 110, and the encoder drive module 120 are respectively mounted on the mounting bases within their respective protective enclosures. The SSI signal conversion instrument is installed below the mounting base of the protective enclosure corresponding to the transmitting unit 200. The wireless transmitting submodule is located on the mounting base within the protective enclosure corresponding to the transmitting unit 200, and the wireless receiving submodule is located on the mounting base within the protective enclosure corresponding to the receiving unit 100. In some embodiments, both protective enclosures are equipped with rechargeable power modules. Specifically, the rechargeable power modules can be pre-charged for standby, providing power to the internal equipment of the protective enclosures when no external power outlet is available, further improving off-site power supply capability. In addition to the portability of the offline calibration system, the protective enclosures corresponding to the transmitting unit 200 and the receiving unit 100 are also equipped with safety buttons. These safety buttons are electrically connected to the power module for overvoltage protection. This protection mechanism can effectively prevent damage to the power module and the charged equipment due to overvoltage, further improving the safety of the offline calibration system. The power module of the protective enclosure corresponding to the transmitting unit 200 is electrically connected to the altimeter and SSI signal conversion instrument, respectively, to supply power to the altimeter and SSI signal conversion instrument. The power module of the protective enclosure corresponding to the receiving unit 100 is electrically connected to the encoder drive module 120 and the human-machine interface module 110, respectively, to supply power to the encoder drive module 120 and the human-machine interface module 110, respectively.

[0044] Furthermore, the mounting base inside the protective housing corresponding to the receiving unit 100 is also provided with an encoder coupling and an encoder bracket. The encoder bracket is used to fix the target encoder. The encoder coupling is connected to the output shaft of the encoder drive module 120. The encoder bracket and the encoder coupling are coaxially mounted. The encoder drive module 120 is a stepper motor. The encoder bracket has an axial groove adapted to the shape of the target encoder. The target encoder is mounted on the side of the encoder bracket facing away from the coupling through the axial groove. The target encoder fixed on the encoder bracket can be connected to the stepper motor through the coupling to realize synchronous forward, reverse, fast or slow rotation of the stepper motor and the target encoder.

[0045] Furthermore, the wiring module 210 is a spring-press type quick-connect wiring device, which enables convenient and efficient wiring.

[0046] The above are merely preferred embodiments of this utility model and are not intended to limit the scope of this utility model. Various modifications and variations can be made to this utility model by those skilled in the art. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of this utility model should be included within the protection scope of this utility model.

Claims

1. An offline calibration system for a gate hoist height gauge and encoder, characterized in that, It includes a receiving unit (100) and a transmitting unit (200); The receiving unit (100) includes a human-machine interaction module (110) and an encoder drive module (120). The signal output terminal of the human-machine interaction module (110) is connected to the signal input terminal of the encoder drive module (120). The encoder drive module (120) is used to drive the target encoder to rotate. The transmitting unit (200) includes a wiring module (210), the signal output terminal of the target encoder is connected to the signal input terminal of the wiring module (210), and the wiring module (210) is used to connect to the target altimeter.

2. The offline calibration system for the gate hoist height gauge and encoder as described in claim 1, characterized in that, The system also includes a communication module and a serial port signal conversion module. The signal output terminal of the target altimeter is connected to the signal input terminal of the serial port signal conversion module, and the signal output terminal of the serial port signal conversion module is connected to the signal input terminal of the human-machine interaction module (110) via the communication module.

3. The offline calibration system for the gate hoist height gauge and encoder as described in claim 2, characterized in that, The communication module is a wireless communication module, including a wireless transmitting submodule and a wireless receiving submodule. The signal output terminal of the serial port signal conversion module is connected to the signal input terminal of the wireless transmitting submodule, the signal output terminal of the wireless transmitting submodule is connected to the signal input terminal of the wireless receiving submodule, and the signal output terminal of the wireless receiving submodule is connected to the signal input terminal of the human-machine interaction submodule.

4. The offline calibration system for the gate hoist height gauge and encoder as described in claim 3, characterized in that, It also includes a protective enclosure, in which the transmitting unit (200) and the receiving unit (100) are respectively housed.

5. The offline calibration system for the gate hoist height gauge and encoder as described in claim 4, characterized in that, The protective enclosure is provided with an installation base, and the wiring module (210), human-machine interaction module (110) and encoder drive module (120) are respectively installed on the installation bases in the corresponding protective enclosures.

6. The offline calibration system for the gate hoist height gauge and encoder as described in claim 5, characterized in that, The mounting base inside the protective housing corresponding to the receiving unit (100) is also provided with an encoder coupling and an encoder bracket. The encoder coupling is connected to the output shaft of the encoder drive module (120), and the encoder bracket is coaxially installed with the encoder coupling.

7. The offline calibration system for the gate hoist height gauge and encoder as described in claim 6, characterized in that, The encoder bracket has an axial groove that matches the shape of the target encoder, and the target encoder is installed on the side of the encoder bracket facing away from the coupling via the groove.

8. The offline calibration system for the gate hoist height gauge and encoder as described in claim 5, characterized in that, The wiring module (210) is a spring-press type quick-connect wiring device.

9. The offline calibration system for the gate hoist height gauge and encoder as described in claim 5, characterized in that, The encoder drive module (120) is a stepper motor.

10. The offline calibration system for the gate hoist height gauge and encoder as described in claim 5, characterized in that, The wireless transmitting submodule is mounted on the mounting base inside the protective enclosure corresponding to the transmitting unit (200), and the wireless receiving submodule is mounted on the mounting base inside the protective enclosure corresponding to the receiving unit (100).

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