CN108917878A - A kind of device and method changing resistive sensor resistance size - Google Patents
A kind of device and method changing resistive sensor resistance size Download PDFInfo
- Publication number
- CN108917878A CN108917878A CN201810889992.6A CN201810889992A CN108917878A CN 108917878 A CN108917878 A CN 108917878A CN 201810889992 A CN201810889992 A CN 201810889992A CN 108917878 A CN108917878 A CN 108917878A
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- CN
- China
- Prior art keywords
- oil
- sensor
- resistance value
- peripheral
- controller
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F23/00—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm
- G01F23/22—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water
- G01F23/24—Indicating or measuring liquid level or level of fluent solid material, e.g. indicating in terms of volume or indicating by means of an alarm by measuring physical variables, other than linear dimensions, pressure or weight, dependent on the level to be measured, e.g. by difference of heat transfer of steam or water by measuring variations of resistance of resistors due to contact with conductor fluid
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F25/00—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume
- G01F25/20—Testing or calibration of apparatus for measuring volume, volume flow or liquid level or for metering by volume of apparatus for measuring liquid level
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- Physics & Mathematics (AREA)
- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Investigating Or Analyzing Materials By The Use Of Electric Means (AREA)
Abstract
A kind of device changing resistive sensor resistance size, it is characterised in that including peripheral expansion device and fuel-quantity transducer, the peripheral expansion device is in parallel with fuel-quantity transducer.Apparatus of the present invention structure is simple, haves no need to change the structure of existing apparatus, direct additional peripheral devices；The method of the present invention ideally solves the technical problem that control system cannot show the range gamut of oil mass.
Description
Technical Field
The invention relates to the field of resistive sensors, in particular to a device and a method for changing the resistance of a resistive sensor.
Background
Under the actual use condition of the power station, the oil quantity can be continuously operated on load for ten hours. At this time, because of factors such as structural space, the oil tank is large, and the oil tank is deep, the length of the matched oil quantity sensor is long, and the adjustable range of the resistance value is large, but the range of the sensor in the unit controller adopted by the control system is small, so that the range of the oil quantity cannot be completely expressed.
In order to solve the problem of the unmatched resistance value, the peripheral extension device is required to change the resistance value range of the oil quantity sensor, and the method is provided.
Disclosure of Invention
In light of the problems identified in the background, an apparatus and method for varying the magnitude of a resistive sensor resistance is provided, which is described further herein.
The device for changing the resistance of the resistive sensor comprises a peripheral expansion device and an oil mass sensor, wherein the peripheral expansion device is connected with the oil mass sensor in parallel.
Further, the peripheral extension device is a resistor.
An apparatus and method for varying the magnitude of a resistive sensor resistance, comprising the steps of:
step 1, calculating the resistance value R of the peripheral expander, and still calculating the resistance value R corresponding to the oil amount in the controller1And resistance value R of the oil sensor itself2Determining the resistance value R of the peripheral expander according to the formula
Step 2, calculating the oil mass percentage set in the controller and actually, according to a calculation formula:
and 3, correcting the corresponding relation between the oil quantity and the resistance value according to the calculated resistance value R of the peripheral expander and the set and actual oil quantity percentage in the controller.
Has the advantages that: compared with the prior art, the device has simple structure, does not need to change the structure of the prior device, and can be directly added with peripheral equipment; the invention perfectly solves the technical problem that the control system can not express the full range of the oil quantity.
Drawings
FIG. 1: the structure of the device is shown schematically;
FIG. 2: a fuel level sensor schematic;
in the figure: 1-a peripheral extender; 2-an oil mass sensor; 3-oil mass sensor slidable part; h-height of the oil mass sensor itself; h1-the height of the slidable part of the fuel quantity sensor to the position of the real time fuel quantity; h2-the height of the bottom end of the oil quantity sensor to the slidable part.
Detailed Description
An embodiment of the invention will now be further elucidated with reference to the drawing.
A device for changing the resistance of a resistive sensor comprises a peripheral expander 1 and an oil quantity sensor 2, wherein the peripheral expander 1 is connected with the oil quantity sensor 2 in parallel.
In this embodiment, the peripheral extender uses a resistor having a resistance value R.
A method of varying the magnitude of the resistance of a resistive sensor, comprising the steps of:
step 1, calculating the resistance value R of the peripheral expander, and still calculating the resistance value R corresponding to the oil amount in the controller1And resistance value R of the oil sensor itself2Determining the resistance value R of the peripheral expander according to the formula
Step 2, calculating the oil mass percentage set in the controller and actually, according to a calculation formula:
wherein,
l: the percentage of oil set in the controller and actually,
h: the height of the oil quantity sensor itself is,
H1: the fuel quantity sensor can slide part of the height of the position of the real-time fuel quantity,
H2: the height from the bottom end of the oil quantity sensor to the slidable part;
and 3, correcting the corresponding relation between the oil quantity and the resistance value according to the calculated resistance value R of the peripheral expander and the set and actual oil quantity percentage in the controller.
Still, in one embodiment, the following table 1 is modified for the correspondence between the calculated oil amount and the resistance value according to the method of the present invention:
TABLE 1 oil mass to resistance value mapping
It can be seen from the table that the maximum value of the resistance value of the oil quantity sensor is 880 Ω, and the upper limit of the oil quantity curve configuration of the controller adopted in practice is only 480 Ω, which is not enough to configure the curve.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (3)
1. The device for changing the resistance of the resistive sensor is characterized by comprising a peripheral expansion device and an oil mass sensor, wherein the peripheral expansion device is connected with the oil mass sensor in parallel.
2. A device for changing the magnitude of a resistive sensor resistance according to claim 1, wherein: the peripheral extension device is a resistor.
3. A method of varying the magnitude of a resistance of a resistive sensor, comprising the steps of:
step 1, calculating the resistance value R of the peripheral expander, and still calculating the resistance value R corresponding to the oil amount in the controller1And resistance value R of the oil sensor itself2Determining a resistance value R of the peripheral expander according to the formula:
step 2, calculating the oil mass percentage set in the controller and actually, according to a calculation formula:
wherein,
l: the actual oil volume percentage set in the controller;
h: the height of the fuel level sensor itself;
H1: the height of the slidable part of the oil quantity sensor to the position of the real-time oil quantity;
H2: the oil amount sensor is located at a height from a lower end of the oil amount sensor to the slidable portion.
And 3, correcting the corresponding relation between the oil quantity and the resistance value according to the calculated resistance value R of the peripheral expander and the set and actual oil quantity percentage in the controller.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810889992.6A CN108917878A (en) | 2018-08-07 | 2018-08-07 | A kind of device and method changing resistive sensor resistance size |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810889992.6A CN108917878A (en) | 2018-08-07 | 2018-08-07 | A kind of device and method changing resistive sensor resistance size |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108917878A true CN108917878A (en) | 2018-11-30 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810889992.6A Pending CN108917878A (en) | 2018-08-07 | 2018-08-07 | A kind of device and method changing resistive sensor resistance size |
Country Status (1)
| Country | Link |
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| CN (1) | CN108917878A (en) |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202393454U (en) * | 2011-12-23 | 2012-08-22 | 中联重科股份有限公司 | A fuel sensor acquisition circuit |
| CN202748104U (en) * | 2012-08-21 | 2013-02-20 | 哈尔滨威帝电子股份有限公司 | High-precision linear fuel sensor |
| CN203489948U (en) * | 2013-09-29 | 2014-03-19 | 三一重机有限公司 | Excavator and liquid level sensor thereof |
-
2018
- 2018-08-07 CN CN201810889992.6A patent/CN108917878A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202393454U (en) * | 2011-12-23 | 2012-08-22 | 中联重科股份有限公司 | A fuel sensor acquisition circuit |
| CN202748104U (en) * | 2012-08-21 | 2013-02-20 | 哈尔滨威帝电子股份有限公司 | High-precision linear fuel sensor |
| CN203489948U (en) * | 2013-09-29 | 2014-03-19 | 三一重机有限公司 | Excavator and liquid level sensor thereof |
Non-Patent Citations (1)
| Title |
|---|
| 商福恭: "《实战中来电工计算》", 30 January 2013 * |
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| PB01 | Publication | ||
| PB01 | Publication | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20181130 |