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Use time limit method of winch intelligent control system and use time limiter

An intelligent control system, time-limited technology, applied in the direction of hoisting device, clockwork mechanism, etc., can solve the problems of inability to realize the use time-limiting function, weak portability, poor compatibility, etc., achieving low cost, strong adaptability, good compatibility

Inactive Publication Date: 2014-06-11
KUNMING UNIV OF SCI & TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The invention provides a use time limit method and a use time limiter of a winch intelligent control system, which are used to solve the problems that the existing equipment cannot realize the use time limit function due to long-term power outages, weak portability, poor compatibility, and use complicated question

Method used

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  • Use time limit method of winch intelligent control system and use time limiter
  • Use time limit method of winch intelligent control system and use time limiter
  • Use time limit method of winch intelligent control system and use time limiter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0048] Embodiment 1: as Figure 1-4 As shown, a method for limiting the use time of a winch intelligent control system, the specific steps of the method are as follows:

[0049] A. Set the start date and end date: Send 13 bytes of start date and end date data to the single-chip microcomputer 2 using the time limiter through the PC with the command No. 0x10 of the Modbus protocol, and the single-chip microcomputer 2 using the time limiter will The CRC check operation is performed on the first 11 bytes of the received data, and the result of the operation is compared with the CRC check codes of the 12th and 13th bytes received:

[0050] A1. When the two CRC check codes are equal, set the start date and end date correctly, and return a string of correct codes;

[0051] A2. When the two CRC check codes are equal, the start date and end date are set incorrectly, and a series of wrong codes are returned;

[0052] A3. When the two CRC check codes are not equal, no code is returned;...

Embodiment 2

[0070] Embodiment 2: as Figure 1-4 As shown, a method for limiting the use time of a winch intelligent control system, the specific steps of the method are as follows:

[0071] A. Set the start date and end date: Send 13 bytes of start date and end date data to the single-chip microcomputer 2 using the time limiter through the PC with the command No. 0x10 of the Modbus protocol, and the single-chip microcomputer 2 using the time limiter will The CRC check operation is performed on the first 11 bytes of the received data, and the result of the operation is compared with the CRC check codes of the 12th and 13th bytes received:

[0072] A1. When the two CRC check codes are equal, set the start date and end date correctly, and return a string of correct codes;

[0073] A2. When the two CRC check codes are equal, the start date and end date are set incorrectly, and a series of wrong codes are returned;

[0074] A3. When the two CRC check codes are not equal, no code is returned;...

Embodiment 3

[0092] Embodiment 3: as Figure 1-4 As shown, a method for limiting the use time of a winch intelligent control system, the specific steps of the method are as follows:

[0093] A. Set the start date and end date: Send 13 bytes of start date and end date data to the single-chip microcomputer 2 using the time limiter through the PC with the command No. 0x10 of the Modbus protocol, and the single-chip microcomputer 2 using the time limiter will The CRC check operation is performed on the first 11 bytes of the received data, and the result of the operation is compared with the CRC check codes of the 12th and 13th bytes received:

[0094] A1. When the two CRC check codes are equal, set the start date and end date correctly, and return a string of correct codes;

[0095] A2. When the two CRC check codes are equal, the start date and end date are set incorrectly, and a series of wrong codes are returned;

[0096] A3. When the two CRC check codes are not equal, no code is returned;...

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Abstract

The invention relates to a use time limit method of a winch intelligent control system and a use time limiter, which belong to the field of water conservancy and hydropower. The method comprises the following steps: setting a start date and an expiry date; reading time data; returning status data; judging if work is carried out or not; and performing cycle monitoring. The device comprises a clock circuit, a single-chip microcomputer and a 485 communication module, wherein the single-chip microcomputer is connected with the clock circuit; an output end and an input end in the 485 communication module are respectively connected with an RXD (Receive Data) end and a TXD (Transmit Data) end of the single-chip microcomputer through a half-duplex communication mode; and RE and DE in the 485 communication module are simultaneously connected with a P1.7 end of the single-chip microcomputer. The use time limiter solves the problem that a use time limit function cannot be realized due to long-time power failure of existing equipment; and has the characteristics of strong portability, good compatibility, convenience in use, simplicity and reliability, strong adaptability, small volume, simple circuit, lower cost and the like.

Description

technical field [0001] The invention relates to a use time limiting method and a use time limiter of an intelligent control system of a hoist, belonging to the field of water conservancy and hydropower. Background technique [0002] At present, the hoist intelligent control system is widely used in the precise control and protection of equipment such as mines, docks, hydropower, factories, etc. With Siemens S7-200 PLC as the control core, the system service life data is solidified in the PLC program through software programming, and then its use time data is accumulated to realize the time limit function. However, this pure software is used to realize the use time limit function The method is only applicable to the same operating system. If you need to implement the use time limit function in other operating systems, you need to rewrite the corresponding program code, so that it is weak in portability, poor in compatibility, and complicated to use. After long-term operation...

Claims

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Application Information

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IPC IPC(8): B66D1/40
Inventor 彭洪邵建龙汪瑞祥魏龄林雨李大焱
Owner KUNMING UNIV OF SCI & TECH
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