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Actuator sensor interface (AS-I) high-accuracy analog quantity output module

An output module, analog technology, applied in simulators, instruments, computer control, etc., can solve the problems of complex analog transmission, immature technology, etc., to achieve high current resolution, strong anti-interference performance, wide application environment temperature Effect

Inactive Publication Date: 2013-05-15
EMA PRECISION ELECTRONICS SUZHOU
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  • Summary
  • Abstract
  • Description
  • Claims
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AI Technical Summary

Problems solved by technology

Compared with other AS-i digital modules, it is more complex in terms of encoding and analog transmission, so the existing AS-i analog output module technology is not yet mature

Method used

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  • Actuator sensor interface (AS-I) high-accuracy analog quantity output module
  • Actuator sensor interface (AS-I) high-accuracy analog quantity output module
  • Actuator sensor interface (AS-I) high-accuracy analog quantity output module

Examples

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Embodiment

[0030] Example: such as figure 1 The AS-i high-precision analog output module shown is composed of structural parts and circuit parts, and the electrical part is installed inside the structural parts. The electrical part includes the following parts of the circuit: AS-i signal filter circuit, AS-i signal codec circuit, module main control circuit, signal power isolation circuit, digital-to-analog conversion circuit, 4-20mA output circuit, power filter and protection circuit, Sensor power switching circuit, etc. The analog slave station mainly implements the numerical signal transmitted from the bus, after conversion and processing, the numerical signal is converted into an analog 4-20mA current output signal through a certain interface circuit. At the same time, the module can provide power support with a certain load capacity for the lower-level sensors, and can freely switch between the AS-i system power supply and the external auxiliary 24V power supply. The power supply c...

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PUM

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Abstract

The invention discloses an actuator sensor interface (AS-I) high-accuracy analog quantity output module which is composed of a structure piece and anelectrical part. The electrical part is installed inside the structure piece and comprises the following circuits of an AS-I signal filter circuit, an AS-I signal coding and decoding circuit, a module main control circuit, a signal power source separating circuit, a digital analogy switching circuit, a 4-20 mA output circuit, a power source filtering and protection circuit, a sensor power source commutation circuit and the like. An analog quantity slave station mainly achieves that after converted process of numeral signal sent from a bus, the numeral signal is converted to an analog 4-20 mA electric current output signal through a certain interface circuit. Meanwhile, power supply support with a certain load capacity can be offered to a sensor of a lower level by the module so that free changing between an AS-I system power source and an external auxiliary 24V power source can be achieved. The power source circuit has the protection functions of short circuit and current-limiting and the like.

Description

technical field [0001] The invention belongs to the field of industrial automation control, and in particular relates to an AS-i high-precision analog output module. Background technique [0002] In the large-scale instruments and equipment of some factories and mines, in the modern production lines of some enterprises, in the field of industrial control, instrumentation, etc., it is usually necessary to collect, transmit and exchange a large number of digital and analog data. The processing, analysis, and judgment of these data are used to complete the operation and control of the entire system. How to realize the processing of analog signals? The underlying analog signal processing module emerges as the times require. It is responsible for collecting, processing, transmitting and outputting analog signals such as voltage and current at various underlying sites. In the industrial field, there are many types of analog modules responsible for information processing, includin...

Claims

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Application Information

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IPC IPC(8): G05B19/042
Inventor 陈柏志
Owner EMA PRECISION ELECTRONICS SUZHOU
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