CN205957892U - Stay -supported high accuracy electron meter ruler - Google Patents
Stay -supported high accuracy electron meter ruler Download PDFInfo
- Publication number
- CN205957892U CN205957892U CN201620617280.5U CN201620617280U CN205957892U CN 205957892 U CN205957892 U CN 205957892U CN 201620617280 U CN201620617280 U CN 201620617280U CN 205957892 U CN205957892 U CN 205957892U
- Authority
- CN
- China
- Prior art keywords
- meter ruler
- stay
- master controller
- bracing wire
- supported high
- 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.)
- Expired - Fee Related
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- Measurement Of Length, Angles, Or The Like Using Electric Or Magnetic Means (AREA)
Abstract
The utility model discloses a stay -supported high accuracy electron meter ruler, including being located display screen, the operating panel on the electron meter ruler casing, be located the potentiometre of acting as go -between, voltage regulation circuit and the main control unit of electron meter ruler casing. The potentiometre of acting as go -between is used for changing the length physical quantity into the signal of telecommunication, and the potentiometre of acting as go -between is connected with reference voltage source, and the potentiometre of acting as go -between, operating panel connect main control unit respectively, and main control unit connects the display screen. The utilization is acted as go -between the potentiometre and can be changed the length physical quantity into the signal of telecommunication, acts as go -between and adopts difficult deformation material to guarantee that the measuring is accurate, and main control unit measurements is read this signal of telecommunication calculation and is obtained the length of testee and then utilize display screen to show measured data. The utility model discloses the principle is simple reasonable, convenient operation, and measurement accuracy is high, and measuring result is directly perceived.
Description
Technical field
This utility model is related to electronic surveying field, especially stay-supported high-precision electronic meter ruler.
Background technology
Nowadays social production ability progressively strengthens, being growing more intense of the market competition, makes traditional measurement instrument manufacturer facility progressively
Reduce.The part tape measure low precision of market circulation now, life-time service is yielding, and artificial measurement error is big, and reading data can not
Directly preserve it is difficult to reach the requirement being convenient for measuring.
The trend of measuring instrument instrument development is lighting, automatization, multifunction.Diastimeter species in the market is numerous
Many, main manufacturer is still in Switzerland, Germany, Japan.In, low-grade measuring instrument instrument product domestic market occupation rate reaches
To 95%, the domestic market occupation rate of expensive goods and the foreign market occupation rate of low-and-medium-grade products have significantly on the basis of existing
Degree improves.Laser range finder, ultrasonic range finder, infrared range-measurement system etc. are all more advanced measuring instruments, but these are advanced
Measuring instrument relatively costly, be only limitted to the measurement of straight line, and higher to environmental requirement.
Utility model content
This utility model technical issues that need to address are：In view of the measurement error of existing tape measure and reading inconvenience, read
Data cannot directly preserve, and Special-shaped object is difficult to measure.Devise a kind of measured value accordingly more accurately and measurement result can
Intuitively to show by liquid crystal display screen, there is the electronics meter ruler of storage and output function simultaneously.
This utility model adopts the following technical scheme that：
Stay-supported high-precision electronic meter ruler, including the display screen on electronics meter ruler housing, guidance panel, positioned at electronics
Bracing wire potentiometer in meter ruler housing, voltage modulate circuit and master controller；
Described bracing wire potentiometer is used for for length physical quantity being changed into the signal of telecommunication, and bracing wire potentiometer is connected with reference voltage
Source, bracing wire potentiometer, guidance panel connect master controller respectively, and master controller connects display screen.
Preferably, described guidance panel includes on ＆ off switch, school zero key, page turning key and storage key.
Preferably, described reference voltage source is simultaneously connected with the AD mouth first of bracing wire potentiometer and master controller by stabilivolt
Passage.
Preferably, described voltage modulate circuit includes being sequentially connected first-order low-pass wave circuit, follower, RC low pass filtered
Wave circuit, the outfan of first-order low-pass wave circuit connecting stay wire potentiometer, the signal of telecommunication of bracing wire potentiometer output sequentially passes through
The AD mouth second channel of master controller is inputted after first-order low-pass wave circuit, follower, RC low-pass filter circuit.
Preferably, described master controller is msp430 series low power consumption control device.
Preferably, described bracing wire potentiometer is WF20D resistor type displacement sensor.
Using the Advantageous Effects that as above technical scheme obtains it is：
Length physical quantity can be changed into the signal of telecommunication using bracing wire potentiometer by this utility model, and bracing wire is using being difficult deformation
Material ensures the accurate of measurement, and master controller measurement is read this signal of telecommunication and is calculated the length of testee and then using aobvious
Measurement data is shown by display screen curtain.Button has the functions such as machine open/close, calibration, clearing, storage, page turning, output simultaneously.
Measured value is more accurate and measurement result can intuitively show there is store function by liquid crystal display screen simultaneously, can will measure
Data storage and can be exported.
To sum up this utility model has with low cost, principle advantages of simple, easy to operate, and certainty of measurement is high, measurement result
Intuitively, can facilitate and Special-shaped object is measured, measurement result can be stored and be easy to the features such as directly export.
Brief description
Fig. 1 is stay-supported high-precision electronic meter ruler structural representation.
Fig. 2 is stay-supported high-precision electronic meter ruler hardware block diagram.
Fig. 3 is voltage signal conditioning circuit figure.
Specific embodiment
In conjunction with accompanying drawing 1 to 3, specific embodiment of the present utility model is described further：
As shown in figure 1, stay-supported high-precision electronic meter ruler, including the display screen 1 on electronics meter ruler housing, operating surface
Plate, bracing wire potentiometer in electronics meter ruler housing, voltage modulate circuit and master controller.Guidance panel include on ＆ off switch 2,
School zero key 3, page turning key 4 and storage key 5.On ＆ off switch 2 effect is to open or close electronics meter ruler, after the start of electronics meter ruler, presses
Lower school zero button 3 screen resets, and eliminates zero partially, now can use, measurement data can intuitively be shown on display screen 1,
Need during data storage, to press storage key 5, otherwise automatically abandon measured data, page turning key 4 is used for the length of storage of leafing through
Data.
As shown in Fig. 2 bracing wire potentiometer is used for for length physical quantity being changed into the signal of telecommunication, bracing wire potentiometer is connected with benchmark
Voltage source, bracing wire potentiometer, guidance panel connect master controller respectively, and master controller connects display screen.Master controller adopts low
Power microprocessors msp430 series, advantageously reduces system overall power.
As shown in figure 3, voltage signal conditioning circuit in figure adopts WF20D resistor type displacement sensor R2, WF20D resistance-type
Displacement transducer independent linearity tolerance is micron order ± 0.1%, and external form is little, sturdy and durable, easy for installation, can by this sensor
So that length physical quantity to be converted into the signal of telecommunication.
Produce 2.5V reference voltage using stabilivolt D2 to power to bracing wire potentiometer, be concurrently accessed the AD mouth the of master controller
One passage.
After bracing wire potentiometer output connects the single order low pass circuit filtering through being made up of resistance capacitance, then through by transporting
Put the follower circuit of OPA336 composition, again pass by the AD mouth second channel that RC low-pass filter circuit accesses master controller, this
Sample design contributes to eliminating analog digital conversion error and can effectively suppressing temperature drift.The recordable multiple measurement result of this system, leads to
Cross button and can realize the functions such as the inquiry of historical data, clearing, calibration, system is furnished with display screen, the length value of measurement is clearly straight
See display convenient use.
During use, length physical quantity is changed into electricity by bracing wire outlet 6 pull-out, WF20D resistor type displacement sensor by bracing wire
Signal, the signal of telecommunication passes to master controller through voltage signal conditioning circuit, and master controller measurement is read this signal of telecommunication and is calculated
The length of testee and then measurement data is shown using display screen.
Certainly, described above be only preferred embodiment of the present utility model, this utility model is not limited to enumerate above-mentioned
, it should be noted that any those of ordinary skill in the art are under the guidance of this specification, that is made is all etc. for embodiment
With replacement, obvious variant, all fall within the essential scope of this specification, protection of the present utility model ought to be subject to.
Claims (6)
1. stay-supported high-precision electronic meter ruler is it is characterised in that include the display screen on electronics meter ruler housing, operating surface
Plate, bracing wire potentiometer in electronics meter ruler housing, voltage modulate circuit and master controller；
Described bracing wire potentiometer is used for for length physical quantity being changed into the signal of telecommunication, and bracing wire potentiometer is connected with reference voltage source, draws
Line potentiometer, guidance panel connect master controller respectively, and master controller connects display screen.
2. stay-supported high-precision electronic meter ruler according to claim 1 is it is characterised in that described guidance panel includes switching
Key, school zero key, page turning key and storage key.
3. stay-supported high-precision electronic meter ruler according to claim 1 is it is characterised in that described reference voltage source passes through surely
Pressure pipe is simultaneously connected with the AD mouth first passage of bracing wire potentiometer and master controller.
4. stay-supported high-precision electronic meter ruler according to claim 3 is it is characterised in that described voltage modulate circuit includes
The first-order low-pass wave circuit that is sequentially connected, follower, RC low-pass filter circuit, first-order low-pass wave circuit connecting stay wire current potential
The outfan of device, the signal of telecommunication of bracing wire potentiometer output sequentially passes through first-order low-pass wave circuit, follower, RC low-pass filtering electricity
The AD mouth second channel of master controller is inputted behind road.
5. stay-supported high-precision electronic meter ruler according to claim 1 is it is characterised in that described master controller is msp430
Serial low power consumption control device.
6. stay-supported high-precision electronic meter ruler according to claim 1 is it is characterised in that described bracing wire potentiometer is
WF20D resistor type displacement sensor.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2015210736666 | 2015-12-21 | ||
| CN201521073666 | 2015-12-21 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN205957892U true CN205957892U (en) | 2017-02-15 |
Family
ID=57968327
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201620617280.5U Expired - Fee Related CN205957892U (en) | 2015-12-21 | 2016-06-21 | Stay -supported high accuracy electron meter ruler |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN205957892U (en) |
-
2016
- 2016-06-21 CN CN201620617280.5U patent/CN205957892U/en not_active Expired - Fee Related
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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 |
Granted publication date: 20170215 Termination date: 20170621 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |