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Weak current detection system and method based on intelligent soft start control device

A detection system and equipment technology, used in power supply testing, motor generator/starter, starter of a single multi-phase induction motor, etc., can solve problems such as poor anti-interference, phase offset, etc. Interfering effects

Inactive Publication Date: 2017-01-04
宁波市艾霖信息科技有限公司
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AI Technical Summary

Problems solved by technology

At present, most soft starters use transformer step-down or voltage and current transformers to obtain their zero-crossing points. The disadvantages of this are phase offset and poor anti-interference

Method used

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  • Weak current detection system and method based on intelligent soft start control device
  • Weak current detection system and method based on intelligent soft start control device
  • Weak current detection system and method based on intelligent soft start control device

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Embodiment

[0025] see figure 1 , figure 2 with image 3 , the present invention provides a technical solution: a weak current detection method based on an intelligent soft-start control device, comprising the following steps:

[0026] S1, the control motor starting chip with the embedded system as the core, providing a powerful operating system and establishing library functions with different functions;

[0027] S2. Use the motor starting chip to monitor the starting parameters in real time, and design an operable interface, which can realize the modification of the liquid crystal switching interface and related data such as starting and protecting the motor;

[0028] S3. Use the real-time clock to set the time, and then realize the soft starter to start the three-phase asynchronous motor at regular intervals, so that the three-phase asynchronous motor can maintain a normal state for a long time;

[0029] S4. Realize the switching and operation of different interfaces and the settin...

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Abstract

The invention discloses a weak current detection system based on an intelligent soft start control device. An input end of an embedded processing module is connected with a data end of a signal control center, an output end of the signal control center is connected with a signal processing module by virtue of a main circuit, an output end of the signal processing module is connected with a data end of the embedded processing module, the input end of the embedded processing module is also connected with a voltage detection circuit, a control motor start apparatus is installed inside the main circuit, an LPC2378-series processing chip is adopted, an ARM7TDMI-S processor is used, and a highest working frequency can reach 72MHz; and a data end of a real-time clock module is controlled by adopting a principal computer, and a voltage controllable function is realized by using a level converter, so that a purpose of driving strong current by virtue of weak current can be achieved, and the reliability of the circuit performance is improved.

Description

technical field [0001] The invention relates to the field of weak current detection, in particular to a weak current detection system and method based on an intelligent soft start control device. Background technique [0002] With the rapid development of electronic technology and the emergence and continuous improvement of a large number of electronic power devices, the traditional methods used to control motor starting, such as thermal variable resistors, auto-coupling step-down, series resistance or reactance, and other starting methods have disappeared from the market. At present, soft starters and frequency converters are mainly used to control the starting of asynchronous motors. Since the price of the frequency converter is several times or even ten times that of the thyristor motor soft starter, the electrical characteristics are not easy to grasp, and the control process is complicated, which is difficult for ordinary users to accept. However, the traditional thyri...

Claims

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Application Information

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IPC IPC(8): H02P1/28G01R31/42G01R19/175G01R25/00
CPCH02P1/28G01R19/175G01R25/00G01R31/42
Inventor 陈佳丹
Owner 宁波市艾霖信息科技有限公司
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