Industrial field can bus isolation data acquisition module
A data acquisition module, CAN bus technology, applied in simulators, instruments, computer control and other directions, can solve the problems of poor reliability, unstable operation, and the microcontroller communication interface is easily affected by industrial field signals, etc., to achieve stable operation. , good reliability
Active Publication Date: 2018-05-01
QUANZHOU GUANHANGDA ELECTRONIC TECHNOLOGY CO LTD
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Problems solved by technology
[0002] In the process of industrial control, it is often necessary to collect on-site digital or analog signals, and control and adjust the on-site equipment through its analysis. However, the existing data acquisition modules are easy to operate in actual use. Affected by industrial field interference, the operation is unstable and the reliability is poor; and the communication interface of the microcontroller is easily affected by the industrial field signal
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[0011] The following further describes the present invention with reference to the accompanying drawings and specific embodiments to facilitate a clearer understanding of the technical ideas claimed by the present invention.
[0012] As attached figure 1 As shown, the industrial field CAN bus isolation data acquisition module of the present invention includes a CAN transceiver 1, a microcontroller 2, a power supply circuit 3, a signal input circuit 4, and a signal output circuit 5. The CAN transceiver 1 passes through a photoelectric isolator 6. Connected to the microcontroller 2, the microcontroller 2 is electrically connected to the power circuit 3, the signal input circuit 4 and the signal output circuit 5 are connected to the microcontroller 2 respectively; the signal input circuit 4 includes two digital signal input circuits 80 and 12 Analog signal input circuits 82, the two digital signal input circuits 80 and the twelve analog signal input circuits 82 are respectively conn...
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The present invention discloses an industrial field CAN bus isolation data acquisition module which comprises a CAN transceiver, a microcontroller, a power supply circuit, a signal input circuit, a signal output circuit and a watchdog circuit. The CAN transceiver is connected to the microcontroller through an optoelectronic isolator. The microcontroller is electrically connected to the power supply circuit. Both the signal input circuit and the signal output circuit are connected to the microcontroller. The watchdog circuit and the microcontroller are in control connection. The CAN transceiver and the microcontroller are isolated. The signal input circuit, the signal output circuit, and the microcontroller are in electrical isolation. The industrial field CAN bus isolation data acquisition module can collect a digital quantity signal or an analog quantity signal of a field, through analyzing the signal, a field device is controlled and adjusted, the influence of industrial field interference on the running of the field device can be greatly reduced and is extremely low, the influence of an industrial field signal on a microcontroller communication interface is avoided, the operation is stable, and the reliability is good.
Description
Technical field [0001] The invention relates to a data acquisition module, in particular to a data acquisition module with CAN bus isolation suitable for industrial field digital signal or analog signal acquisition. Background technique [0002] In the process of industrial control, it is often necessary to collect on-site digital or analog signals, and control and adjust field equipment through its analysis. However, the current data acquisition modules are easy to operate in actual use. Affected by industrial field interference, unstable operation and poor reliability; and the communication interface of the microcontroller is easily affected by industrial field signals. Summary of the invention [0003] In view of the shortcomings of the prior art, the present invention aims to provide an industrial field CAN bus that operates stably and has good reliability and has very low impact on its operation by industrial field interference, while avoiding industrial field signals from af...
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IPC IPC(8): G05B19/042
CPCG05B19/042G05B2219/25257
Inventor 蔡崇开
Owner QUANZHOU GUANHANGDA ELECTRONIC TECHNOLOGY CO LTD