CN203249733U - Hydraulic indicator error checking device - Google Patents
Hydraulic indicator error checking device Download PDFInfo
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- CN203249733U CN203249733U CN 201320212174 CN201320212174U CN203249733U CN 203249733 U CN203249733 U CN 203249733U CN 201320212174 CN201320212174 CN 201320212174 CN 201320212174 U CN201320212174 U CN 201320212174U CN 203249733 U CN203249733 U CN 203249733U
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Abstract
The utility model belongs to the technical field of detection, and relates to a hydraulic indicator error checking device. The checking device is composed of a touch screen, a programmable logic controller, an A/D conversion module, an analog sensor circuit board, a power supply module and a special potentiometer. According to the hydraulic indicator error checking device of the utility model, modular design is adopted, and therefore, the detection of one kind of hydraulic indicator can be completed through adopting a single device, which satisfies a use requirement of a user. The connection of a tested product is simple and convenient. A man-machine interface is friendly; the touch screen can be adopted as an operation interface and a display interface without a complexly-designed mechanical button circuit required. According to indication error principles of a tested product, and with the programmable logic controller and the A/D conversion module adopted, the indication errors of the tested product can be automatically calculated, and the indication errors are displayed through the touch screen, and therefore, errors in a manual recording process and a manual conversion process can be avoided, and work efficiency can be improved.
Description
Technical field
The utility model belongs to the detection technique field, relates to a kind of Hydraulic Pressure Indicator error-detecting device.
Background technology
The hydraulic air indicator series of products of enterprise, its method of testing and testing efficiency have been not suitable with the needs of modern production.
Existing Hydraulic Pressure Indicator test adopts adjustable ac source to power to product, at resistance R 1 and the R2 of access analog sensor, and outside two resistance box R (X) and the R (Y) of connecting of while, as shown in Figure 1.In the situation that keeping two resistance box resistances and remaining unchanged during balanced bridge, an increase, the regulative mode that another reduces makes bridge balance.Because resistance box can not be regulated continuously, just can make bridge balance after need repeatedly regulating.After the resistance of artificial two resistance boxes of reading, look into the error that the corresponding form of error draws indicator according to these two resistances.The process of whole inspection error is loaded down with trivial details, very easily causes maloperation, affects measuring accuracy.
Summary of the invention
The purpose of this utility model is: design a kind of measuring accuracy high, and easy and simple to handle, the Hydraulic Pressure Indicator error-detecting device of energy automatic interpretation error.
Technical solution of the present utility model is:
Hydraulic Pressure Indicator error-detecting device, this device is comprised of touch-screen, programmable logic controller (PLC), A/D modular converter, analog sensor circuit plate, power module, special-purpose pot.Wherein,
Form test circuit by tested Hydraulic Pressure Indicator, power module, analog sensor circuit plate and special-purpose pot, wherein, special-purpose pot is connected on two brachium pontis of electric bridge of Hydraulic Pressure Indicator;
Form error interpretation circuit by touch-screen, programmable logic controller (PLC), A/D modular converter, analog sensor circuit plate, power module, special-purpose pot, wherein, A/D revolving die piece gathers pot center head voltage signal and is transferred to programmable logic controller (PLC), programmable logic controller (PLC) converses the index error of indicator based on Hydraulic Pressure Indicator error Computing Principle, and shows by touch-screen;
Touch-screen, programmable logic controller (PLC) and analog sensor circuit plate are controlled the switching of test circuit and error interpretation circuit;
Described special-purpose current potential is counted accurate multi-turn variable resistor.
Technique effect of the present utility model is:
The utility model has realized that a Hydraulic Pressure Indicator error-detecting device finishes user's request for utilization of 2 Hydraulic Pressure Indicators tests, has easy to operate, the direct characteristics of display error.
This Hydraulic Pressure Indicator error-detecting device no longer needs the equipment such as independent power supply, resistance box, change-over switch, finish the error-detecting of Hydraulic Pressure Indicator by programmable logic controller (PLC), A/D modular converter, special-purpose pot, touch-screen, replace manual record in the past and the method for the conversion index error of tabling look-up, guarantee measuring accuracy, improved testing efficiency.
Description of drawings
Fig. 1 is former metering circuit schematic diagram.
Fig. 2 is the utility model circuit theory diagrams.
Fig. 3 is theory diagram of the present utility model.
Embodiment
Be described in further details below in conjunction with 3 pairs of the utility model of accompanying drawing.
Hydraulic Pressure Indicator error-detecting device, this device is comprised of touch-screen, programmable logic controller (PLC), A/D modular converter, analog sensor circuit plate, power module, special-purpose pot.Wherein,
Form test circuit by tested Hydraulic Pressure Indicator, power module, analog sensor circuit plate and special-purpose pot, wherein, special-purpose pot is connected on two brachium pontis of electric bridge of Hydraulic Pressure Indicator;
Form error interpretation circuit by touch-screen, programmable logic controller (PLC), A/D modular converter, analog sensor circuit plate, power module and special-purpose pot, wherein, A/D revolving die piece gathers pot center head voltage signal and is transferred to programmable logic controller (PLC), programmable logic controller (PLC) converses the index error of indicator based on Hydraulic Pressure Indicator error Computing Principle, and shows by touch-screen;
Touch-screen, programmable logic controller (PLC) and analog sensor circuit plate are controlled the switching of test circuit and error interpretation circuit;
Described special-purpose current potential is counted accurate multi-turn variable resistor.Resistance box resistance and the same in variable-resistance total value and the former measuring method namely replaces original two resistance box R (X) and R (Y), as shown in Figure 2.
Using method of the present utility model is as follows:
At first connect error-detecting device and tested Hydraulic Pressure Indicator by cable, the upper corresponding control error-detecting device of point touching screen is with tested Hydraulic Pressure Indicator access analog sensor.If the indicator electric bridge is uneven, then select by the touch-screen control, special-purpose pot is connected on two brachium pontis of electric bridge of Hydraulic Pressure Indicator, form test circuit.Make again the bridge balance of Hydraulic Pressure Indicator by regulating the pot knob.
Then point touching shields upper error control, tested Hydraulic Pressure Indicator is connected with power module with analog sensor circuit is connected cut-out, by forming error interpretation circuit by touch-screen, programmable logic controller (PLC), A/D modular converter, analog sensor circuit plate, power module and special-purpose pot.The A/D modular converter gathers the voltage signal of pot center head and is transferred to programmable logic controller (PLC), and programmable logic controller (PLC) converses the index error of indicator based on Hydraulic Pressure Indicator error Computing Principle, and shows by touch-screen.
Embodiment 1:
Touch-screen is selected Delta 74S211 type, and programmable logic controller (PLC) is selected the FX3U-48M of Mitsubishi type, and it is 4NIC-8Q Chaoyang power module that the A/D modular converter is selected the FX3U-4A/D of Mitsubishi type, power module.
Claims (2)
1. Hydraulic Pressure Indicator error-detecting device, it is characterized in that: this device is comprised of touch-screen, programmable logic controller (PLC), A/D modular converter, analog sensor circuit plate, power module, special-purpose pot; Wherein,
Form test circuit by tested Hydraulic Pressure Indicator, power module, analog sensor circuit plate and special-purpose pot, wherein, special-purpose pot is connected on two brachium pontis of electric bridge of Hydraulic Pressure Indicator;
Form error interpretation circuit by touch-screen, programmable logic controller (PLC), A/D modular converter, analog sensor circuit plate, power module, special-purpose pot, wherein, A/D revolving die piece gathers pot center head voltage signal and is transferred to programmable logic controller (PLC), programmable logic controller (PLC) converses the index error of indicator based on Hydraulic Pressure Indicator error Computing Principle, and shows by touch-screen;
Touch-screen, programmable logic controller (PLC) and analog sensor circuit plate are controlled the switching of test circuit and error interpretation circuit.
2. Hydraulic Pressure Indicator error-detecting device as claimed in claim 1, it is characterized in that: described special-purpose current potential is counted accurate multi-turn variable resistor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320212174 CN203249733U (en) | 2013-04-24 | 2013-04-24 | Hydraulic indicator error checking device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320212174 CN203249733U (en) | 2013-04-24 | 2013-04-24 | Hydraulic indicator error checking device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203249733U true CN203249733U (en) | 2013-10-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320212174 Expired - Fee Related CN203249733U (en) | 2013-04-24 | 2013-04-24 | Hydraulic indicator error checking device |
Country Status (1)
| Country | Link |
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| CN (1) | CN203249733U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776585A (en) * | 2013-12-06 | 2014-05-07 | 武汉航空仪表有限责任公司 | Hydraulic indicator error inspection method |
| CN114858347A (en) * | 2022-04-07 | 2022-08-05 | 国营芜湖机械厂 | Pressure indicator indication error test equipment and test method |
-
2013
- 2013-04-24 CN CN 201320212174 patent/CN203249733U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103776585A (en) * | 2013-12-06 | 2014-05-07 | 武汉航空仪表有限责任公司 | Hydraulic indicator error inspection method |
| CN114858347A (en) * | 2022-04-07 | 2022-08-05 | 国营芜湖机械厂 | Pressure indicator indication error test equipment and test method |
| CN114858347B (en) * | 2022-04-07 | 2023-10-20 | 国营芜湖机械厂 | Pressure indicator indication error testing equipment and testing method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131023 |