CN201653613U

CN201653613U - Torque detection device for torsional spring

Info

Publication number: CN201653613U
Application number: CN201020184496XU
Authority: CN
Inventors: 丁建军; 孙超; 钱同惠; 于军; 王曦华
Original assignee: Jianghan University
Current assignee: Jianghan University
Priority date: 2010-04-30
Filing date: 2010-04-30
Publication date: 2010-11-24
Anticipated expiration: 2020-04-30

Abstract

The utility model discloses a torque detection device for a torsional spring. The torque detection device comprises a power supply module, a torque sensor for extracting a torque signal of the torsional spring, a signal amplification module, an A/D converting module, a singlechip collection control unit, and a man-machine interface unit, wherein the signal output terminal of the torque sensor is connected with the input terminal of the signal amplification module; the output terminal of the signal amplification module is connected with the singlechip collection control unit through the A/D conversion module; the singlechip collection control unit is also connected with the man-machine interface unit; and the power supply module is used for supplying power to the torque sensor, the signal amplification module, the A/D conversion module, the singlechip collection control unit and the man-machine interface unit, respectively. The torque detection device can quickly collect and analyze the torque signal of the torsional spring, and has the advantages of accurate detection and high interference resistance.

Description

The torsion spring torsion-testing apparatus

Technical field

The utility model relates to torsion spring parameter testing field, refers to a kind of torsion spring torsion-testing apparatus particularly.

Technical background

Conventionally known to one of skill in the art, torsion spring is a kind of important basic product that has a large capacity and a wide range, its range of application almost relates to all spectra of national economy, especially over past ten years, the fast development of automobile, motorcycle industry, being in full swing of railway system's speed-raising all had higher requirement to the quality of torsion spring.The production of torsion spring at present by under expect in the finished product process, need through heating curl, thermal treatment and polish multiple tracks production process such as processing.Need determine whether the torsion spring quality is qualified by the technical parameters such as physical dimension, mechanical property, dynamic response difference and moment of torsion of testing it through the torsion spring that above-mentioned operation is produced, be a difficult problem in the present technique field always wherein, also do not have ripe torsion spring torsion-testing instrument at present the accurate test of torque parameter.

Summary of the invention

The purpose of this utility model is exactly at above-mentioned technical matters, and a kind of torsion spring torsion-testing apparatus is provided, and it can be tested accurately to the moment of torsion of torsion spring.

For realizing this purpose, a kind of torsion spring torsion-testing apparatus that the utility model is designed, it comprises power module, extract the torque sensor of torsion spring torque signal, the signal amplification module, analog-to-digital conversion module, single-chip microcomputer acquisition controlling unit, human and machine interface unit, wherein, the signal output part of torque sensor connects signal amplification module discrepancy end, the output terminal of described signal amplification module connects single-chip microcomputer acquisition controlling unit by analog-to-digital conversion module, single-chip microcomputer acquisition controlling unit also links to each other with human and machine interface unit, and described power module is given torque sensor respectively, the signal amplification module, analog-to-digital conversion module, single-chip microcomputer acquisition controlling unit and human and machine interface unit power supply.

Between described signal amplification module and the analog-to-digital conversion module waveform filtration module is arranged in succession.

Described signal amplification module is the difference amplification module.

Described human and machine interface unit comprises display screen, keyboard and printer.

Described power module is given the power supply of waveform filtration module.

Described waveform filtration module is a low-pass filtering module.

The utility model is by being provided with the torque signal that torque sensor extracts torsion spring, and signalization amplification module, waveform filtration module, analog-to-digital conversion module to the signal that extracts amplify, processing such as analog to digital conversion, and the signal after the processing carries out reading displayed by single-chip microcomputer acquisition controlling unit, make that the utility model can be to the quick collection and the analysis of torsion spring torque signal, and Device Testing is accurate, and antijamming capability is strong.

Description of drawings

Fig. 1 is a schematic diagram block diagram of the present utility model.

Embodiment

The utility model is described in further detail below in conjunction with drawings and Examples:

A kind of torsion spring torsion-testing apparatus as shown in Figure 1, it comprises power module, extract the torque sensor of torsion spring torque signal, the signal amplification module, the waveform filtration module, analog-to-digital conversion module, single-chip microcomputer acquisition controlling unit, human and machine interface unit, wherein, the signal output part of torque sensor connects signal amplification module discrepancy end, the preferred difference amplification module of this signal amplification module, the output terminal of signal amplification module connects the waveform filtration module, the preferred 40HZ of this waveform filtration module is with interior low-pass filtering module, low-pass filtering module connects single-chip microcomputer acquisition controlling unit by analog-to-digital conversion module, single-chip microcomputer acquisition controlling unit also links to each other with human and machine interface unit, and described power module is given torque sensor respectively, the signal amplification module, the waveform filtration module, analog-to-digital conversion module, single-chip microcomputer acquisition controlling unit and human and machine interface unit power supply.

In the technique scheme, human and machine interface unit comprises display screen, keyboard and printer, and display screen can show the torsion spring torque parameter value after single-chip microcomputer is handled in real time, and keyboard is used to realize the triggering of torsion spring torsion-testing apparatus instruction.Printer is used for obtaining job record information, and convenient arrangement is preserved.

In the technique scheme, single-chip microcomputer acquisition controlling unit is preferably selected the C8051F020 single-chip microcomputer of compatible MSC51 kernel for use, and display screen adopts the yellowish green liquid crystal display of 12864 dot matrix.Power module employing four is electricity mutually, and each phase power supply all is to export through link voltage stabilizings such as shaping, filtering, voltage stabilizings after transformer obtains suitable step-down, and it selects for use the more excellent LM317 chip of performance to take typical continuous adjustable mu balanced circuit.Signal amplification module, waveform filtration module and analog-to-digital conversion module are formed signal conditioning circuit, wherein, the signal amplification module adopts the AD623 differential amplifier, the waveform filtration module constitutes the quadravalence low-pass filter by two LM358 operational amplifiers in conjunction with capacitance-resistance filter, disturbs in order to most of high frequency interference of filtering and power frequency.

Introduce the principle of work and the course of work thereof of torsion spring torsion-testing apparatus below in conjunction with present embodiment and accompanying drawing:

Real-time torque signal when torsion spring rotates, extract by torque sensor, because torque sensor output is the weak voltage signal of millivolt level, and differential signal output, and be superimposed with the 50Hz power frequency that high frequency noise that electronic circuit and radio magnetic wave produce and city's electrical network produce usually and disturb, therefore, realize amplification by the difference amplification module in this implementation column to faint differential voltage signal, with interior low-pass filtering module signal is carried out anti-interference process by 40HZ again, pass through analog-to-digital conversion module then, make digital signal enter single-chip microcomputer acquisition controlling unit and carry out analyzing and processing, operating personnel control and the reading of parameter whole device by human and machine interface unit.Power module provides the power supply of whole device, the 12V300mA power supply of power module output is given torque sensor, signal amplification module, waveform filtration module and analog-to-digital conversion module power supply, the 5V200mA power supply of power module output is powered to display screen, the 5V3A of power module output powers to printer, and the 3.3V power supply of power module output is given the simulation part and the numerical portion power supply of single-chip microcomputer acquisition controlling unit respectively.

The content that this instructions is not described in detail belongs to this area professional and technical personnel's known prior art.

Claims

1. torsion spring torsion-testing apparatus, it is characterized in that: it comprises power module, extract the torque sensor of torsion spring torque signal, the signal amplification module, analog-to-digital conversion module, single-chip microcomputer acquisition controlling unit, human and machine interface unit, wherein, the signal output part of torque sensor connects signal amplification module discrepancy end, the output terminal of described signal amplification module connects single-chip microcomputer acquisition controlling unit by analog-to-digital conversion module, single-chip microcomputer acquisition controlling unit also links to each other with human and machine interface unit, and described power module is given torque sensor respectively, the signal amplification module, analog-to-digital conversion module, single-chip microcomputer acquisition controlling unit and human and machine interface unit power supply.

2. torsion spring torsion-testing apparatus according to claim 1 is characterized in that: between described signal amplification module and the analog-to-digital conversion module waveform filtration module is arranged in succession.

3. torsion spring torsion-testing apparatus according to claim 1 is characterized in that: described signal amplification module is the difference amplification module.

4. torsion spring torsion-testing apparatus according to claim 1 is characterized in that: described human and machine interface unit comprises display screen, keyboard and printer.

5. torsion spring torsion-testing apparatus according to claim 2 is characterized in that: described power module is given the power supply of waveform filtration module.

6. torsion spring torsion-testing apparatus according to claim 2 is characterized in that: described waveform filtration module is a low-pass filtering module.