CN202229724U

CN202229724U - Resistance-type strain gauge

Info

Publication number: CN202229724U
Application number: CN2011202983644U
Authority: CN
Inventors: 施杰; 刘椿峰
Original assignee: Individual
Current assignee: Individual
Priority date: 2011-08-17
Filing date: 2011-08-17
Publication date: 2012-05-23
Anticipated expiration: 2021-08-17

Abstract

The utility model relates to a resistance-type strain gauge comprising a lithium battery power module, a liquid crystal display and a storage, wherein a controllable bridge voltage, a strain gauge transducer, a program-controlled amplifier, an analog filter, a 16-bit analog-to-digital converter and a single chip are connected in series successively; a subtractor and a 16-bit digital-to-analog converter are connected in series successively, and are connected with a comparator in parallel; the controllable bridge voltage, the program-controlled amplifier, the 16-bit digital-to-analog converter, the liquid crystal display and the storage are respectively connected with the singlechip in parallel successively; the controllable bridge voltage, the program-controlled amplifier, the analog filter, the subtractor, the 16-bit digital-to-analog converter, the comparator, the 16-bit analog-to-digital converter, the singlechip, the liquid crystal display and the storage are respectively connected with the lithium battery power module in parallel successively; and the singlechip, a keyboard, an awakening module and the lithium battery power module are connected in series successively. The resistance-type strain gauge has the advantage of low cost and convenient use, and can accurately and visually display the strain value.

Description

The resistance-type strainmeter

Technical field

The utility model relates to a kind of hand-held strainmeter, relates in particular to a kind of resistance-type strainmeter that utilizes the liquid crystal device directly to show strain value.

Background technology

Along with rapid economy development, the slip-stick artist usually need be in mobile environment such as car and boat, work high above the ground such as bridge tower, large-scale hanging device, metallurgy high furnace; The inconvenient scene of power supply power supply is measured, so the hand-held strainmeter has had application more and more widely, but the hand-held strainmeter all is mechanical strain gage basically in the market; Before each the measurement, all must read, and then on the examination thing, survey and read at standard pin carpenters square subscript; Difference more between the two calculates the deflection of asking.Waste time and energy, and unusual trouble, if any the words of carelessness also inaccurate phenomenon can appear.

Summary of the invention

The purpose of the utility model is exactly that a kind of resistance-type strainmeter that utilizes the liquid crystal device directly to show strain value will be provided, and it can overcome the existing problem of above existing strainmeter product.The purpose of the utility model is achieved in that the resistance-type strainmeter, comprises that lithium battery power supply module, LCD, storer form, and it is characterized in that; Controlled confession bridge voltage, strain gauge transducer, programmable amplifier, analog filter, 16 analog-to-digital converters, single-chip microcomputers are connected in proper order; Subtracter, the series connection of 16 bit digital to analog converter order; Simultaneously parallelly connected with comparer; Controlled confession bridge voltage, programmable amplifier, 16 bit digital to analog converter, comparer, 16 analog-to-digital converters, LCD, memory order are parallelly connected with single-chip microcomputer respectively, and controlled confession bridge voltage, programmable amplifier, analog filter, subtracter, 16 bit digital to analog converter, comparer, 16 analog-to-digital converters, single-chip microcomputer, LCD, memory order are parallelly connected with the lithium battery power supply module respectively; Single-chip microcomputer, keyboard, wake module, the series connection of lithium battery power supply sequence of modules.The utility model cost is low, easy to use, demonstration strain value that can be accurate and visual.

Description of drawings:

Fig. 1 is the utility model line construction synoptic diagram;

1. lithium battery power supply module, 2. controlled confession bridge voltage, 3. strain gauge transducer, 4. programmable amplifier; 5. analog filter, 6. subtracter, 7.16 bit digital are to analog converter, 8. comparer; 9.16 the position analog-to-digital converter, 10. single-chip microcomputer, 11. LCDs; 12. storer, 13. keyboards, 14. wake module.

Embodiment

The resistance-type strainmeter comprises lithium battery power supply module 1, LCD 11,12 compositions of storer, it is characterized in that; Controlled confession bridge voltage 2, strain gauge transducer 3, programmable amplifier 4,5,16 analog-to-digital converters 9 of analog filter, single-chip microcomputer 10 order series connection; The 7 order series connection of subtracter 6,16 bit digital to analog converters, simultaneously parallelly connected with comparer 8; Controlled confession bridge voltage 2, programmable amplifier 4,16 bit digital to analog converters 7,8,16 analog-to-digital converters 9 of comparer, LCD 11, storer 12 orders are parallelly connected with single-chip microcomputer 10 respectively; Controlled confession bridge voltage 2, programmable amplifier 4, analog filter 5, subtracter 6,16 bit digital to analog converters 7,8,16 analog-to-digital converters 9 of comparer, single-chip microcomputer 10, LCD 11, storer 12 orders are parallelly connected with the lithium battery power supply module respectively; Single-chip microcomputer 10, keyboard 13, wake module 14, the 1 order series connection of lithium battery power supply module.During practical implementation, Lithium battery power supply:Keyboard Control wake module at first, wake module control lithium battery power supply module is supplied power, and when end-of-job, through the Keyboard Control wake module, controls the lithium battery power supply module and enters into dormant state. The sensor power supply:Give single-chip microcomputer for an order through keyboard, the controlled confession bridge voltage of Single-chip Controlling is exported the confession bridge voltage and is given strain gauge transducer, for strain gauge transducer provides WV afterwards. Instrument internal voltage signal Balance Treatment:In this simultaneously, through balance on the keyboard and reset button, send instruction and give single-chip microcomputer; Single-chip microcomputer sends instruction for 16 bit digital to analog converter again, makes 16 bit digital to analog converter output aanalogvoltage get into subtracter, carries out computing; After comparing through comparer again; Transmission is ceased and desisted order to single-chip microcomputer, and built-in voltage in the circuit is removed, and avoids having influence on measuring-signal. Signals collecting and demonstration storage:Strain gauge transducer outputs signal to programmable amplifier, and signal gets into analog filter, elimination irrelevant signal through after amplifying; With useful signal again through 16 analog-to-digital converters; Convert digital signal to, after signal advanced the single-chip microcomputer processing afterwards, directly be presented on the LCD on the one hand; Also store on the other hand in the storer, conveniently check in the future.

Claims

1. resistance-type strainmeter comprises that lithium battery power supply module (1), LCD (11), storer (12) form, and it is characterized in that; Controlled confession bridge voltage (2), strain gauge transducer (3), programmable amplifier (4), analog filter (5), 16 analog-to-digital converters (9), the series connection of single-chip microcomputer (10) order; Subtracter (6), the series connection of 16 bit digital to analog converter (7) order, simultaneously parallelly connected with comparer (8); Controlled confession bridge voltage (2), programmable amplifier (4), 16 bit digital to analog converter (7), comparer (8), 16 analog-to-digital converters (9), LCD (11), storer (12) order are parallelly connected with single-chip microcomputer (10) respectively; Controlled confession bridge voltage (2), programmable amplifier (4), analog filter (5), subtracter (6), 16 bit digital to analog converter (7), comparer (8), 16 analog-to-digital converters (9), single-chip microcomputer (10), LCD (11), storer (12) order are parallelly connected with the lithium battery power supply module respectively; Single-chip microcomputer (10), keyboard (13), wake module (14), the series connection of lithium battery power supply module (1) order.