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Data holding circuit for hydrogen environment intrinsic safety system and working method thereof

An intrinsically safe and data-retaining technology, applied in general control systems, circuit devices, battery circuit devices, etc., can solve problems such as high cost, high cost, and inability to meet hydrogen requirements, and achieve small capacitance, simple circuit structure, and improved Effects on job stability and security

Pending Publication Date: 2021-03-16
张家港氢芯电气系统科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Traditional complex circuits not only cannot meet the requirements of intrinsically safe systems in hydrogen environments, but also bring disadvantages such as high cost and high cost

Method used

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  • Data holding circuit for hydrogen environment intrinsic safety system and working method thereof

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Embodiment 1

[0021] This embodiment describes a data retention circuit for an intrinsically safe system in a hydrogen environment, such as figure 1 As shown, the hydrogen environment intrinsically safe system includes an MCU processor for data processing, the MCU processor has a power input terminal and a ground terminal, and the data retention circuit includes a buffer capacitor C1, which is connected in parallel to the power supply Between the input end and the ground end, a FLASH flash memory module is arranged in the MCU processor, and the memory module of the MCU processor is connected to the FLASH flash memory module.

[0022] The voltage at the input terminal of the power supply is "+3.3V", and the buffer capacitor C1 is a capacitor of 10-22 uF with a withstand voltage of 10V. In this embodiment, a buffer capacitor with a capacitance of 10 uF is preferably used.

[0023] When the power input terminal is powered off, the buffer capacitor C1 will discharge to supply power to the MCU ...

Embodiment 2

[0025] The present invention also provides a data retention method for a hydrogen environment intrinsically safe system. The hydrogen environment intrinsically safe system includes an MCU processor for data processing, and the MCU processor has a power input terminal and a ground terminal, such as figure 1 As shown, a buffer capacitor is connected in parallel between the power supply input terminal and the ground terminal. Through the monitoring of the power supply input terminal by the MCU processor, when the power supply input terminal is monitored to be powered off, the memory module needs The stored data is backed up, and the buffer capacitor supplies power to the MCU processor during the back up process.

[0026] The MCU processor is provided with a FLASH flash memory module, and the MCU processor stores the data in the memory module into the FLASH flash memory module when performing the data backup. After the power supply input terminal resumes power supply, the stored d...

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Abstract

The invention relates to a data holding circuit for a hydrogen environment intrinsic safety system and a working method of the data holding circuit. The hydrogen environment intrinsic safety system comprises an MCU processor for processing data, the MCU processor is provided with a power input end and a grounding end, a buffer capacitor is connected between the power input end and the grounding end in parallel, the power input end is monitored through the MCU processor, data needing to be kept in a memory module is stored when it is monitored that the power input end is powered off, and the buffer capacitor supplies power to the MCU processor in the storage process. According to the invention, the MCU processor can be temporarily powered on in case of power failure, so that the MCU processor can store the data needing to be maintained in the memory module and restore the data to the memory module after normal power supply is recovered, and the MCU processor can quickly recover work.

Description

technical field [0001] The invention relates to a data holding circuit and a working method thereof for an intrinsically safe system in a hydrogen environment. Background technique [0002] Microprocessor is a relatively common small data processing system. When it is working, it will encounter unexpected power failure, which will easily lead to the loss of work data, and the equipment cannot quickly return to the previous operation after the power supply is restored. Inconvenience has been caused. In response to the above problems, a data retention circuit has appeared at present, which means that after the external power of the processor circuit is turned off, the specified data in the MCU memory will be saved, and it will be restored to the memory as soon as possible after the next power-on, so that the micro The processor can continue to work with the data when the power is off, but this kind of data retention circuit often uses farad capacitors, UPS or other backup pow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): H02J7/34G05B19/042
CPCH02J7/345G05B19/0428
Inventor 蒋华
Owner 张家港氢芯电气系统科技有限公司
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