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High-precision arbitrary-value-capacitance output device and output method

An output device and output method technology, applied in the direction of capacitor testing, etc., can solve the problems of large range change span, inconvenient use, slow operation, etc., and achieve the effect of improving capacitor output accuracy, wide application prospects, and flexible and convenient use.

Pending Publication Date: 2021-04-13
四川泛华航空仪表电器有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0002] In the occasions of aircraft fuel measurement system detection and hardware-in-the-loop simulation verification tests, it is necessary to simulate the fuel sensor to output high-precision arbitrary capacitance signals, which requires the capacitance output device to be able to output any capacitance in a timely and accurate manner. At this stage, the capacitance output device adopts The way of fixed point output can only contain a few characteristic capacitance values, which cannot meet the needs of arbitrary output, and is large in size, slow in operation, inconvenient to use, and unable to meet the needs of detection and testing.
In applications such as aircraft fuel measurement and other fields, the test requirements for capacitance signals are changeable, and the range change span is also large, and the existing technology is difficult to meet the test requirements of high range, fast response and high precision.

Method used

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  • High-precision arbitrary-value-capacitance output device and output method

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Embodiment 1

[0032] This embodiment proposes a high-precision arbitrary-value capacitance output device for outputting the required capacitance value, and the high-precision arbitrary-value capacitance output device includes an input capacitance output instruction C x External command input unit, control unit and precision capacitor bank;

[0033] The control unit includes a computing unit, an interface unit connecting the computing unit and an external instruction input unit, and an execution unit connecting the computing unit and a precision capacitor bank;

[0034] Multiple sets of precision capacitors are set in the precision capacitor group unit, and actuators corresponding to and connected to the precision capacitors are set in the execution unit and control the on-off of the precision capacitors;

[0035] In order to better realize the present invention, further, the precision capacitors are capacitors whose capacitance values ​​are different multiples of the capacitance precision v...

Embodiment 2

[0038] This embodiment also proposes a high-precision arbitrary-value capacitor output method, based on the above-mentioned high-precision arbitrary-value capacitor output device, including the following steps:

[0039] Step S1: The user inputs the capacitance output command C in the external command input unit x , the capacitor output command C x The value of is the value of the actual required specific capacitance;

[0040] Step S2: Set the output capacitance accuracy value of the high-precision arbitrary value capacitance output device to C, and the range of the input capacitance value is 0-C m ;

[0041] Step S3: In the calculation unit, output the instruction C according to the capacitance x Calculated with the set capacitor accuracy C to obtain the logical combination value L x ;

[0042] Step S4: Set up a group of multiple precision capacitors within different multiples of the precision capacitor C in the precision capacitor bank, according to the obtained logical ...

Embodiment 3

[0045] In this embodiment, on the basis of the above-mentioned embodiment 2, in order to better realize the present invention, further, when the selected base system is binary, the precision capacitors are set to be sorted from small to large capacitance values ​​as follows: C 1 、C 2 、C 3 ...C i ...C n ; 1≤i≤n, and i is an integer, said n≥m;

[0046] The capacitance value C of the precision capacitor 1 1 =C=C*2 0 ;

[0047] The capacitance value C of the precision capacitor 2 2 =C 1 *2=C*2 1 ;

...

[0048] The capacitance value C of the precision capacitor i i for C*2 i-1 ;

...

[0049] The capacitance value C of the precision capacitor n n = C n-1 *2=C*2 n-1 ;

[0050] Calculate the maximum output capacitance value of the high-precision arbitrary value capacitance output device as ΣC n =C*(2 n -1), the ∑C n ≧C m .

[0051] Other parts of this embodiment are the same as those of Embodiment 2 above, so details are not repeated here.

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Abstract

The invention provides a high-precision arbitrary-value-capacitance output device and output method. The high-precision arbitrary-value-capacitance output device comprises an external instruction input unit used for inputting a capacitor output instruction Cx, a control unit and a precision capacitor bank. The control unit comprises a calculation unit, an interface unit connected with the calculation unit and the external instruction input unit, and an execution unit connected with the calculation unit and the precision capacitor bank. A plurality of groups of precision capacitors are arranged in the precision capacitor bank unit. Execution elements which correspond to and are connected with the precision capacitors and control the on-off of the precision capacitors are arranged in the execution unit. According to the method, the high-precision precision capacitors are combined in a standard mode, high-precision output of any capacitance value is achieved, and different requirements of tests are met.

Description

technical field [0001] The invention belongs to the technical field of capacitance signal simulation for semi-physical simulation verification tests, and in particular relates to a high-precision arbitrary-value capacitance output device and an output method. Background technique [0002] In the occasions of aircraft fuel measurement system detection and hardware-in-the-loop simulation verification tests, it is necessary to simulate the fuel sensor to output high-precision arbitrary capacitance signals, which requires the capacitance output device to be able to output any capacitance in a timely and accurate manner. At this stage, the capacitance output device adopts The way of fixed point output can only contain a few characteristic capacitance values, which cannot meet the needs of arbitrary output, and is bulky, slow to operate, inconvenient to use, and cannot meet the needs of detection and testing. In applications such as aircraft fuel measurement and other fields, the ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01R31/64
CPCG01R31/64
Inventor 何文明梁勇万海军
Owner 四川泛华航空仪表电器有限公司
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