Magnetic isolation data input-output module based on ARM self-adaptive direction control

An input and output module, adaptive control technology, applied in the direction of electrical digital data processing, instruments, etc., can solve the problems of inconvenient use, low transmission and reception efficiency, etc., to achieve the effect of improving work efficiency, simple operation, and convenient system upgrade

Inactive Publication Date: 2013-09-11
NORTHEAST GASOLINEEUM UNIV
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

[0006] The purpose of the present invention is to provide a magnetic isolation data input and output module based on ARM adaptive direction control, which is used to solve the problems of low transceiving efficiency and inconvenient use in traditional industrial field control and data acquisition devices

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  • Magnetic isolation data input-output module based on ARM self-adaptive direction control
  • Magnetic isolation data input-output module based on ARM self-adaptive direction control
  • Magnetic isolation data input-output module based on ARM self-adaptive direction control

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Embodiment Construction

[0024] Below in conjunction with accompanying drawing, the present invention will be further described:

[0025] combine figure 1 , figure 2 As shown, this magnetic isolation data input and output module based on ARM adaptive direction control includes an ARM microcontroller, an adaptive control magnetic isolation RS-485 transceiver circuit, a magnetic isolation input and output free conversion circuit, and a startup mode selection circuit , self-adaptive control magnetic isolation RS-485 transceiver commutation circuit, magnetic isolation input and output by free conversion circuit, start mode selection circuit respectively connected with ARM microcontroller. The ARM microcontroller uses an ARM microcontroller model STM32F103.

[0026] The present invention adopts 5V power supply, ARM micro-controller STM32F103 and the module internal circuit all adopt 3.3V power supply, and the outside of the module all uses the 5V power supply isolated from inside, so the present inventi...

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Abstract

The invention relates to a magnetic isolation data input-output module based on ARM self-adaptive direction control. The module comprises an ARM microcontroller, a self-adaptive control magnetic isolation RS-485 receiving-transmitting reversing circuit, a magnetic isolation input-output free conversion circuit and a starting mode selection circuit, the self-adaptive control magnetic isolation RS-485 receiving-transmitting reversing circuit, the magnetic isolation input-output free conversion circuit and the starting mode selection circuit are connected with the ARM microcontroller respectively, the self-adaptive control magnetic isolation RS-485 receiving-transmitting reversing circuit comprises a chip ADuM2483 and a triode collector, two ADuM1400 chips of the magnetic isolation input-output free conversion circuit totally have 8 input-output channels, a three-pin jumper wire is added at the input-output end of each input-output channel, and the starting mode selection circuit comprises a resistor R18, a resistor R19 and a two-pin jumper wire. By the magnetic isolation data input-output module based on ARM self-adaptive direction control, data transceiving efficiency is improved, stability and interference resistance are high, and two methods for updating system firmware by a special programmer and a serial port are provided.

Description

[0001] 1. Technical field: [0002] The invention relates to a device for industrial site control and data acquisition, in particular to a magnetic isolation data input and output module based on ARM self-adaptive direction control. 2. Background technology: [0003] Traditionally, using RS-485 communication requires software to control the RE# / DE pin to realize the conversion of receiving information and sending information. During the conversion process of receiving and sending, it will cause delays in data transmission and reception, and at the same time, it is easy to introduce interference during this period. Receive redundant messy data, if the timing of conversion is wrong, data will be lost. [0004] Traditionally, the input and output are fixed in the circuit design and cannot be set according to the needs, which brings inconvenience to the field control. [0005] Traditionally, the system is started from the user program, and the chip is programmed through a dedi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F13/40
Inventor 郭福田曾丽丽张昕赵忖刘心红刘彦昌
Owner NORTHEAST GASOLINEEUM UNIV
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