CN207456431U - High-precision integral type hydrostatic level - Google Patents
High-precision integral type hydrostatic level Download PDFInfo
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- CN207456431U CN207456431U CN201720976178.9U CN201720976178U CN207456431U CN 207456431 U CN207456431 U CN 207456431U CN 201720976178 U CN201720976178 U CN 201720976178U CN 207456431 U CN207456431 U CN 207456431U
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- pressure sensor
- hydrostatic level
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Abstract
High-precision integral type hydrostatic level; it is related to sensor technology; the utility model includes pressure sensor and temperature sensor; the compression end of pressure sensor is connected with water pipe; temperature sensor is arranged at pressure sensor in waterproof sealing shell; waterproof sealing shell is arranged in protection shell, and protection shell is equipped with opening, as water pipe channel and cable passage.The utility model has the characteristics that simple in structure, construction is simple, high-precision, low cost, has wide promotion prospect.
Description
Technical field
The utility model is related to sensor technologies, more particularly to the high-precision one for high-speed railway sinking deformation monitoring
Formula hydrostatic level.
Background technology
It is every to there are a large amount of high-speed railways to put into operation and put into effect every year with domestic high-speed railway high speed development, by
Have to the ride comfort of track and its strict requirements in high-speed railway, therefore engineering is deformed into each side under High Speed Railway
The emphasis of concern.
The hydrostatic level used domestic at present only contains pressure sensor unit, but due to the use of environment more
Badly, ambient temperature changes greatly.Output signal is influenced by internal sensitive resistance resistance value, but as semi-conducting material
Force sensing resistance, resistance value is but also affected by temperature not only with the linear variation of external pressure, therefore sensor
Output signal by the variation of external temperature influenced greatly, with temperature occur it is elegant.
To solve the problems, such as measurement accuracy of the sensor under substantial temperature variation, the method used at present can be divided into internal benefit
It repays and external compensation.Internal compensation is mainly by improving semiconductor fabrication process, the rational sensor pressure-sensitive diaphragm of design
Structure is influenced by temperature in this way to reduce sensor output signal.
External compensation has two methods of hardware and software.Hardware compensating method is primarily directed to pressure-sensitive on its pressure-sensitive diaphragm
The Design of Temperature Compensation that resistance or the Wheatstone bridge being made of varistor carry out.The method of software compensation is mainly pin
The output signal of sensor is adjusted, sensor carries out static demarcating first, establishes output signal, normal pressure and temperature
Relation, and then obtain Current Temperatures under normal pressure.This method is that sensor-based temperature drift is with temperature list
The ideal situation of modulation has ignored influence of the other factors to sensor temperature drift, therefore can not reach good
Effect temperature compensation.
In summary, existing sensor is with precision is low, micromation is low, reliability is low, of high cost, the degree of automation is low
The deficiencies of, it is difficult to meet Engineering Deformation Observation technology requirement under High Speed Railway.
Utility model content
Technical problem to be solved in the utility model is a kind of high-precision integral type static(al) water with temperature-compensating of design
Quasi- instrument, low with micromation, difficulty of construction, auto thermal compensation reduces temperature drift, increases substantially the characteristics of measurement accuracy.
The utility model solve the technical problem the technical solution adopted is that, high-precision integral type hydrostatic level,
Be characterized in that, including pressure sensor and temperature sensor, the compression end of pressure sensor is connected with water pipe, temperature sensor with
Pressure sensor is arranged in waterproof sealing shell, and waterproof sealing shell is arranged in protection shell, and protection shell is equipped with opening, as
Water pipe channel and cable passage.
The protection shell is cylinder, and opening is arranged at the end face of cylinder, and opening is provided with bellows.Pressure passes
Sensor is fixed on by injecting glue filling in waterproof sealing shell with temperature sensor.
The beneficial effects of the utility model are that effectively solve integral type encapsulation design structure to facilitate in-site installation with after
Phase safeguards, reduces sensor bus, the risk of the damages such as liquid pipe, tracheae；Pressure sensitive unit and temperature are ensured by injection process
Degree module is in same temperature field, by data acquisition process unit to the sampled value knot of high-precision analog type pressure sensitive unit
It closes temperature and carries out correction of temperature drift, greatly improve hydrostatic level precision.With simple in structure, construction is simple, high-precision, low
The features such as cost, has wide promotion prospect.
Description of the drawings
Fig. 1 is the longitudinal profile schematic diagram of the utility model.
Fig. 2 is the left view direction schematic diagram of the utility model.
Specific embodiment
As shown in Figure 1, Figure 2, the high-precision integral type hydrostatic level of the utility model includes：Whole pipe fitting protects shell 8,
Both ends are fixedly installed steel wire corrugated flexible hose 7；Sensor package casing 2 is arranged in whole pipe fitting protection shell 10, and one end is solid
Surely water pipe straight coupling 1 is connected, the other end is fixedly connected with Waterproof connector of cable 6, and top sets gas-tpe fitting 9；Analogue type pressure
Sensing unit 3 carries out filling fixation with temperature sensor 4 using injection process, and is connected 10 with coupling terminal block with cable, after
End equipment cable connects electric cable connection circuit plate 5 by waterproof, and circuit board 5 is set inside sensor package casing, by cable with
Wiring pipe platform 10 connects.
The utility model is had using integral type encapsulation design：Whole pipe fitting protects shell, and both ends are fixedly installed steel
Silk corrugated flexible hose；Internal Protection shell is arranged in whole pipe fitting protection shell, and one end is fixedly connected with water pipe straight coupling, mould
Plan type pressure sensitive unit and L-type water pipe head, the other end are fixedly connected with Waterproof connector of cable, and waterproof connector passes through cable connection
Data acquisition process unit and thermal module are set in data acquisition central cavity, and universal gas-tpe fitting is fixedly installed in top；Number
It according to acquisition process terminal board, is arranged on tectosome table top, is connected by signal wire with data acquisition process unit.
Pressure sensitive unit and thermal module are placed on the same sky of sensor by the utility model built-in temperature debugging functions
In chamber, filling fixation is carried out by injection process, it is ensured that the two is in same temperature field.It is obtained by analogue type pressure sensitive unit
Current pressure data is obtained, Current Temperatures are obtained by thermal module, using data acquisition process unit to analogue type pressure sensing
The signal of unit acquisition carries out temperature-compensating amendment, and high accuracy data is obtained with this.
Claims (3)
1. high-precision integral type hydrostatic level, which is characterized in that including pressure sensor and temperature sensor, pressure sensor
Compression end be connected with water pipe, temperature sensor and pressure sensor are arranged in waterproof sealing shell, and waterproof sealing shell is arranged at
It protects in shell, protection shell is equipped with opening, as water pipe channel and cable passage.
2. high-precision integral type hydrostatic level as described in claim 1, which is characterized in that the protection shell is cylinder
Shape, opening are arranged at the end face of cylinder, and opening is provided with bellows.
3. high-precision integral type hydrostatic level as claimed in claim 2, which is characterized in that pressure sensor and temperature sensing
Device is fixed on by injecting glue filling in waterproof sealing shell.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720976178.9U CN207456431U (en) | 2017-08-07 | 2017-08-07 | High-precision integral type hydrostatic level |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720976178.9U CN207456431U (en) | 2017-08-07 | 2017-08-07 | High-precision integral type hydrostatic level |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207456431U true CN207456431U (en) | 2018-06-05 |
Family
ID=62247920
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720976178.9U Active CN207456431U (en) | 2017-08-07 | 2017-08-07 | High-precision integral type hydrostatic level |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207456431U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478197A (en) * | 2017-08-07 | 2017-12-15 | 中铁二院工程集团有限责任公司 | High-precision integral type hydrostatic level |
| CN110906905A (en) * | 2019-12-03 | 2020-03-24 | 宁波朗达工程科技有限公司 | Ultra-high precision static level gauge |
-
2017
- 2017-08-07 CN CN201720976178.9U patent/CN207456431U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107478197A (en) * | 2017-08-07 | 2017-12-15 | 中铁二院工程集团有限责任公司 | High-precision integral type hydrostatic level |
| CN110906905A (en) * | 2019-12-03 | 2020-03-24 | 宁波朗达工程科技有限公司 | Ultra-high precision static level gauge |
| CN110906905B (en) * | 2019-12-03 | 2020-11-17 | 宁波朗达工程科技有限公司 | Ultra-high precision static level gauge |
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