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Current signal simulator of pump motor experiment

A technology of current signal and simulator, applied in the field of current signal simulator, can solve the problem of unusable electric motor experimental equipment, and achieve the effect of widening the range of input voltage, improving the applicability and convenient wiring.

Inactive Publication Date: 2015-07-29
镇江市永泰汽车配件制造有限公司
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  • Abstract
  • Description
  • Claims
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Problems solved by technology

But in many cases, the voltage of the experimental conditions of different pump motors is higher than the range of the input voltage, which makes the existing motor experimental equipment unusable

Method used

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  • Current signal simulator of pump motor experiment

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Embodiment Construction

[0012] Below in conjunction with accompanying drawing and specific embodiment, further illustrate the present invention, should be understood that these embodiments are only for illustrating the present invention and are not intended to limit the scope of the present invention, after having read the present invention, those skilled in the art will understand various aspects of the present invention Modifications in equivalent forms all fall within the scope defined by the appended claims of this application.

[0013] The purpose of the invention is to maintain the standard 0-20mA current signal output, widen the input voltage range, and improve the application range of the current signal simulator.

[0014] As shown in the attached figure, a current signal simulator for pump motor experiment includes a signal source input terminal, a sliding resistor 1, a circuit module 2, and a signal output terminal 3. The sliding resistor is connected in parallel with the circuit module, and...

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Abstract

The invention discloses a current signal simulator of a pump motor experiment. The current signal simulator comprises a signal source input end, a slip resistor, a circuit module and a signal output end, wherein the slip resistor is connected with the circuit module in parallel and is connected with the signal source input end and the signal output end in series to form circuit connection. The current signal simulator of the pump motor experiment has the advantages that input can be realized on the basis of 0-24 V high voltage, the output of a low current signal to the output end is realized by adjusting the resistance value of the slip resistor, standard 0-20 mA signal output can be still generated, and the voltage input requirements of different motor experiment conditions can be met. A 0-20 mA signal is a simulation bus technology, has strong antijamming capability, is convenient for wiring, cannot be influenced by different introduction distributed resistances with different wire lengths, and can be widely applied in the field of industrial automation chemical combination instruments. According to the invention, the range of input voltage of an experiment apparatus can be expanded, and the applicable universality of the experiment apparatus can be improved.

Description

technical field [0001] The invention relates to electrical experiment equipment, in particular to a current signal simulator for pump motor experiment. Background technique [0002] The existing motor experiment equipment includes an interference suppression circuit, a surge suppression circuit, a reverse connection protection circuit, a current output protection circuit, and a current loop control circuit. [0003] The interference suppression circuit can eliminate the electromagnetic interference in series in the circuit loop during field application. The surge suppression circuit can turn on the shunt in a very short time when the circuit is subjected to a sudden peak current or voltage from the outside, so as to avoid damage to the circuit by the surge. The reverse connection protection circuit is used to protect the circuit when the circuit is reversed into the loop. The current output protection circuit is used to limit the output current of the circuit to prevent pe...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/34
Inventor 魏瑞庆王斌
Owner 镇江市永泰汽车配件制造有限公司
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