CN202974179U - Crimping-terminal strain test system - Google Patents
Crimping-terminal strain test system Download PDFInfo
- Publication number
- CN202974179U CN202974179U CN 201220670555 CN201220670555U CN202974179U CN 202974179 U CN202974179 U CN 202974179U CN 201220670555 CN201220670555 CN 201220670555 CN 201220670555 U CN201220670555 U CN 201220670555U CN 202974179 U CN202974179 U CN 202974179U
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- bridge circuit
- bridge
- terminal
- switch
- chip microcomputer
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Abstract
A crimping-terminal strain test system comprises a short circuit switch, a single-chip microcomputer and a half-bridge line. The short circuit switch and a bridge circuit switch are connected with the single-chip microcomputer in parallel. The short circuit switch and a WAGO crimping terminal are respectively connected with the bridge circuit switch in series. The half-bridge line and a Comp compensation line are respectively connected with an internal bridge module in series. The single-chip microcomputer, a UART-to-USB module and a computer are successively connected in series. The computer is provided with signal test software. The system provided by the utility model is convenient in operation and reliable in connection. Work efficiency is raised and labor intensity is reduced.
Description
Technical field
The utility model relates to strain measurement system
,Especially relate to a kind of novel WAGO pressure line terminal strain measurement system.
Background technology
Strain measurement system also claims electric wire strain gauge.The foil gauge that resistance change can occur along with distortion direction in accordance with regulations is attached to the test specimen surface, causes the resistance change of foil gauge due to the test specimen surface strain.People measure the variation of resistance value with the high sensitivity galvanometer.And push away to get the size variation of strain value with this.During the mechanical property that strainmeter is widely used in material detects, for example measure the material extending modulus, exactly with institute's application of load be attached to simultaneously the strain value that the foil gauge on test specimen surface measures and get as calculated.
The resistance strain measurement principle, by sticking on strain ga(u)ge on test specimen as the resistance Sensitive Apparatus, when the test specimen increments of change that has a resistance under external force, recycle general Wheatstone bridge principle, through too low drift high-gain differential amplifier, carry out the particular design that voltage amplification realizes that the resistance variations increment of non electrical quantity converts electric weight conversion to and form.
Metering circuit has many kinds, and the most frequently used is bridge circuit, and it has four brachium pontis, and these four fixed resistances that brachium pontis can be instrument internal can be also the foil gauges that the outside connects, but all must four resistance ability built-up circuits.Can be divided into thus four kinds of bridge circuit modes: single arm measurement, only having a brachium pontis in electric bridge is the resistor disc that participates in mechanically deform, the resistor disc of other three brachium pontis is all the fixed resistance of instrument internal.Half bridge measurement, in electric bridge, adjacent two brachium pontis participate in the resistor disc of mechanically deform, and other two brachium pontis are the fixed resistances that do not participate in mechanically deform.To arm measure, in electric bridge, two relative brachium pontis are resistor discs of ginseng mechanically deform, and other two brachium pontis are fixed resistances, full bridge measurement, and in electric bridge, four brachium pontis are all the resistor discs that participates in mechanically deform.
The tradition strain measurement system adopts the welded type terminal, connects foil gauge and all must use electric soldering iron to weld, and when the conversion bridge circuit, also need to realize by external cabling short circuit copper sheet.Waste time and energy, use especially in the open air, more inconvenient.
Summary of the invention
The purpose of this utility model is to provide a kind of pressure line terminal strain measurement system, utilizes the WAGO pressure line terminal to replace the resistance-type strain measurement system of traditional welding terminal, and it is easy to operate, connects reliably, can increase work efficiency, and reduces labour intensity.
The utility model is achieved in that the pressure line terminal strain measurement system, comprise shorting switch, single-chip microcomputer, half-bridge circuit, it is characterized in that: shorting switch, bridge circuit switch are in parallel with single-chip microcomputer, shorting switch, WAGO pressure line terminal are connected with the bridge circuit switch, half-bridge circuit, Comp compensated line are connected with the internal electrical bridge module, and single-chip microcomputer, UART turn the USB module, computing machine is sequentially connected; Described computer installation has signal testing software.
WAGO pressure line terminal described in the utility model is provided with sensor or foil gauge power supply, signal input terminal, selector switch terminal, ground terminal.
The utility model is easy to operate, connects reliably, has improved work efficiency, has reduced labour intensity.
Description of drawings
Fig. 1 is structural representation of the present utility model.
In figure 1, the WAGO pressure line terminal, 2, shorting switch, 3, the half-bridge circuit, 4, the Comp compensated line, 5, the bridge circuit switch, 6, single-chip microcomputer, 7, UART turns the USB module, 8, computing machine, 9, the internal electrical bridge module.
Embodiment
Below in conjunction with accompanying drawing, the utility model is further described:
With reference to accompanying drawing, the pressure line terminal strain measurement system, comprise shorting switch 2, single-chip microcomputer 6, half-bridge circuit 3, it is characterized in that: shorting switch 2, bridge circuit switch 5 are in parallel with single-chip microcomputer 6, shorting switch 2, WAGO pressure line terminal 1 are connected with bridge circuit switch 5, half-bridge circuit 3, Comp compensated line 4 are connected with internal electrical bridge module 9, and single-chip microcomputer 6, UART turn USB module 7, computing machine 8 order series connection; Described computing machine 8 is provided with signal testing software.Described WAGO pressure line terminal 1 is provided with sensor or foil gauge power supply 101, signal input terminal 102, selector switch terminal 103, ground terminal 104.During concrete enforcement, the utility model needs the bronze medal of manual short circuit to make the instrument built-in switch into tradition, and each passage is provided with a switch, and switch is by Single-chip Controlling; Draw two-route wire by inner electric bridge group simultaneously, one the tunnel is the half-bridge circuit, one the tunnel is the Comp compensated line, and each passage is provided with switch, by Single-chip Controlling, realize that bridge circuit switches, finally by the software control of computer-internal signal testing, signal testing software arranges the bridge circuit type to single-chip microcomputer, and software turns the USB module by UART information is passed to single-chip microcomputer, then Single-chip Controlling shorting switch and bridge circuit switch, realize that the bridge circuit of each passage switches.Namely software is directly controlled the bridge circuit switching, has saved the trouble of manual switchover bridge circuit.Be single arm measurement when being arranged to 1/4 bridge, shorting switch is closed, and bridge circuit switch and Comp compensated line are closed, and this moment, the bridge circuit type was single arm measurement.When being arranged to half-bridge, half bridge measurement or to arm measure, shorting switch is opened namely, bridge circuit switch and half-bridge circuit are closed, and this moment, the bridge circuit type was half bridge measurement or to arm measure.When shorting switch and bridge circuit switch are all opened, be full bridge measurement.The WAGO terminal is the plug wire spring clamping (connector that is used for terminal box by the invention of German WAGO company, safe, reliable, efficient and easy to operately need not instrument and well received with it, fashionable America and Europe, annual sales volume is over 1,000,000,000, and obtained nearly all in the world authoritative institution's safety certification, as the quality safety authentication of UL American National safety certification, CE European Community safety certification, CQC China etc.Have 1), Quan Xinggao, best flame-retardant insulating material modification of nylon, the life-span is long, do not corrode, and is ageing-resistant, withstand voltage 4KV, 105 ℃ of normal operations of temperature.2), good reliability, spring clamping technical battery connects reliably, does not come off.Because fastening force can be regulated automatically with the wire thickness, thereby make the wire contact reliable, be not subjected to the impact of field engineering.Therefore, the WAGO connector can at any time, make wire connect reliable, anti-vibration and non-maintaining in any case.3), high efficiency in use need not instrument, one inserts and get final product, greatly reduces the time of wiring work, uses the WAGO connector than traditional connected mode efficient raising more than 80%.
Claims (2)
1. pressure line terminal strain measurement system, comprise shorting switch (2), single-chip microcomputer (6), half-bridge circuit (3), it is characterized in that: shorting switch (2), bridge circuit switch (5) are in parallel with single-chip microcomputer (6), shorting switch (2), WAGO pressure line terminal (1) are connected with bridge circuit switch (5), half-bridge circuit (3), Comp compensated line (4) are connected with internal electrical bridge module (9), and single-chip microcomputer (6), UART turn USB module (7), the series connection of computing machine (8) order; Described computing machine (8) is provided with signal testing software.
2. pressure line terminal strain measurement system according to claim 1 is characterized in that: described WAGO pressure line terminal (1) is provided with sensor or foil gauge power supply (101), signal input terminal (102), selector switch terminal (103), ground terminal (104).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220670555 CN202974179U (en) | 2012-12-08 | 2012-12-08 | Crimping-terminal strain test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220670555 CN202974179U (en) | 2012-12-08 | 2012-12-08 | Crimping-terminal strain test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202974179U true CN202974179U (en) | 2013-06-05 |
Family
ID=48515240
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220670555 Expired - Fee Related CN202974179U (en) | 2012-12-08 | 2012-12-08 | Crimping-terminal strain test system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202974179U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109579687A (en) * | 2018-12-19 | 2019-04-05 | 北京卫星环境工程研究所 | The rapid wiring device of dynamic strain measuring cable and its application |
-
2012
- 2012-12-08 CN CN 201220670555 patent/CN202974179U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109579687A (en) * | 2018-12-19 | 2019-04-05 | 北京卫星环境工程研究所 | The rapid wiring device of dynamic strain measuring cable and its application |
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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: 20130605 Termination date: 20181208 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |