CN205121327U - Analog current type sensor test module - Google Patents
Analog current type sensor test module Download PDFInfo
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- CN205121327U CN205121327U CN201520909921.XU CN201520909921U CN205121327U CN 205121327 U CN205121327 U CN 205121327U CN 201520909921 U CN201520909921 U CN 201520909921U CN 205121327 U CN205121327 U CN 205121327U
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- current mode
- test module
- controller
- isolating transmitter
- sensor test
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Abstract
The utility model provides an analog current type sensor test module, including controllable voltage input circuit, current mode isolation changer and controller, wherein, controllable voltage input circuit is including concatenating in the connection the potentiometre of changer input is kept apart to the current mode, the current mode keep apart the changer with the controller is connected. This analog current type sensor test module has design science, the change of the on -the -spot sensor signal of simulation, can carry out capability test's advantage to electric unit control ware.
Description
Technical field
The utility model relates to a kind of test module, specifically, relate to a kind of analog electrical flow pattern sensor test module.
Background technology
Present generator set controller, often to sample the temperature of engine, engine oil pressure, and detect engine oil pressure and engine temperature often will use 4-20mA amperometric sensor, so will guarantee that product can test out on-the-spot engine oil pressure and engine temperature accurately for generator set controller new product, therefore, it is very necessary for carrying out the test of dispatching from the factory of nonlinearity and the electric current that samples to controller, and the new product scene of taking can only be carried out on-the-spot test under normal circumstances, extremely bother.
In order to solve above Problems existing, people are seeking a kind of desirable technical solution always.
Summary of the invention
The purpose of this utility model is for the deficiencies in the prior art, thus provides a kind of design science, simulated field sensor signal to change, can carry out group of motors controller the analog electrical flow pattern sensor test module of performance test.
To achieve these goals, the technical scheme that the utility model adopts is: a kind of analog electrical flow pattern sensor test module, comprise controllable voltage input circuit, current mode isolating transmitter and controller, wherein, described controllable voltage input circuit comprises the potentiometer being serially connected with and connecting described current mode isolating transmitter input end, and described current mode isolating transmitter is connected power supply with described controller.
Described on base, described current mode isolating transmitter is T6225D type current mode isolating transmitter.
Described on base, described potentiometer connects the input end of described T6225D type current mode isolating transmitter by connection terminal, and the current signal output end of described T6225D type current mode isolating transmitter connects the signal receiving end of described controller by described connection terminal.
Described on base, the potentiometer of described potentiometer to be adjustable extent be 0-1K Ω.
The utility model hinge structure has substantive distinguishing features and progress, specifically, the utility model utilizes current mode isolating transmitter and is serially connected in the potentiometer of this current mode isolating transmitter input end, simulate the signal of on-the-spot 4-20mA amperometric sensor, carry out nonlinearity and the electric current that samples to controller to dispatch from the factory test, wherein, controlling potential device resistance variations can adjust the voltage of input current type isolating transmitter, thus affect the current signal of current mode isolating transmitter output, with the performance of detection control device and accuracy.
Further, the model of described current mode isolating transmitter is T6225D type current mode isolating transmitter, that a kind of front magnitude voltage signals exports, the active isolation module that rear class electric current exports, inside modules embedded in an efficient micropower power supply, can internally signal processing circuit while powering to the periphery circuit export a road insulating power supply.The electromagnetic isolation technology that T6255D chip internal adopts, compares light-coupled isolation and has better temperature drift characteristic and the linearity.
Further, use connection terminal to carry out the wiring of each several part, circuit is more clear.
Further, the adjustable extent of potentiometer is 0-1K Ω, can the performance of test controller to greatest extent.
The advantage that it has design science, simulated field sensor signal changes, can carry out group of motors controller performance test.
Accompanying drawing explanation
Fig. 1 is module principle figure of the present utility model.
Fig. 2 is circuit theory diagrams of the present utility model.
Embodiment
Below by embodiment, the technical solution of the utility model is described in further detail.
As depicted in figs. 1 and 2, a kind of analog electrical flow pattern sensor test module, comprise controllable voltage input circuit, current mode isolating transmitter T6225D and controller, wherein, described controllable voltage input circuit comprises the potentiometer R1 being serially connected with and connecting described current mode isolating transmitter input end, and described current mode isolating transmitter T6225D is connected power supply with described controller.B+ and B-is power source supply end, described potentiometer to be connected the input end of described T6225D type current mode isolating transmitter by the 3rd, the 4th of connection terminal with the 5th pin, the current signal output end of described T6225D type current mode isolating transmitter to be connected the signal receiving end of described controller by the 6th of described connection terminal with the 7th pin, wherein the 6th pin connects positive pole, and the 7th pin connects negative pole.The potentiometer of described potentiometer R1 to be adjustable extent be 0-1K Ω.
Whole test module is powered by power circuit, B+ and B-is power source supply end, also for controller is powered, 6th pin of P1 terminal connects the positive pole of corresponding 4-20mA engine oil pressure pickup sampling terminal on controller, 7th pin connects the negative pole of corresponding 4-20mA sampling terminal on controller, regulate 1K Ω potentiometer resistance, change input voltage, then by current mode isolating transmitter T6255D, the voltage signal of input is converted to the current signal output of 4-20mA, the current signal that controller will detect, convert the oil pressure force value that generator is corresponding to, thus complete the nonlinearity of controller and the electric current that samples are tested.
Finally should be noted that: above embodiment is only in order to illustrate that the technical solution of the utility model is not intended to limit; Although be described in detail the utility model with reference to preferred embodiment, those of ordinary skill in the field have been to be understood that: still can modify to embodiment of the present utility model or carry out equivalent replacement to portion of techniques feature; And not departing from the spirit of technical solutions of the utility model, it all should be encompassed in the middle of the technical scheme scope of the utility model request protection.
Claims (4)
1. an analog electrical flow pattern sensor test module, it is characterized in that: comprise controllable voltage input circuit, current mode isolating transmitter and controller, wherein, described controllable voltage input circuit comprises the potentiometer being serially connected with and connecting described current mode isolating transmitter input end, and described current mode isolating transmitter is connected power supply with described controller.
2. analog electrical flow pattern sensor test module according to claim 1, is characterized in that: described current mode isolating transmitter is T6225D type current mode isolating transmitter.
3. analog electrical flow pattern sensor test module according to claim 2, it is characterized in that: described potentiometer connects the input end of described T6225D type current mode isolating transmitter by connection terminal, the current signal output end of described T6225D type current mode isolating transmitter connects the signal receiving end of described controller by described connection terminal.
4. analog electrical flow pattern sensor test module according to claim 2, is characterized in that: the potentiometer of described potentiometer to be adjustable extent be 0-1K Ω.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520909921.XU CN205121327U (en) | 2015-11-16 | 2015-11-16 | Analog current type sensor test module |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520909921.XU CN205121327U (en) | 2015-11-16 | 2015-11-16 | Analog current type sensor test module |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205121327U true CN205121327U (en) | 2016-03-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520909921.XU Active CN205121327U (en) | 2015-11-16 | 2015-11-16 | Analog current type sensor test module |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205121327U (en) |
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2015
- 2015-11-16 CN CN201520909921.XU patent/CN205121327U/en active Active
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |