CN105841865B - A kind of heavy-duty vehicle torque transmission shaft detection device and error calibration method - Google Patents
A kind of heavy-duty vehicle torque transmission shaft detection device and error calibration method Download PDFInfo
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- CN105841865B CN105841865B CN201610311215.4A CN201610311215A CN105841865B CN 105841865 B CN105841865 B CN 105841865B CN 201610311215 A CN201610311215 A CN 201610311215A CN 105841865 B CN105841865 B CN 105841865B
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- transmission shaft
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/0061—Force sensors associated with industrial machines or actuators
- G01L5/0066—Calibration arrangements
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L25/00—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency
- G01L25/003—Testing or calibrating of apparatus for measuring force, torque, work, mechanical power, or mechanical efficiency for measuring torque
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- General Physics & Mathematics (AREA)
- Chemical & Material Sciences (AREA)
- Analytical Chemistry (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention discloses a kind of heavy-duty vehicle torque transmission shaft detection devices, comprising: torque sensor is arranged on heavy-duty vehicle transmission shaft, for detecting torque transmission shaft；Sensing device is corrected, the reference correction data on heavy-duty vehicle transmission shaft, for detecting torque transmission shaft, as detection device is set；Analogue signal processor connects the torque sensor, receives the data information of the torque sensor acquisition, and converts to data information, filters and is converted to digital information after amplifying and sends；Data processor, it connects analogue signal processor and correction sensing device, it receives the analogue signal processor and corrects the data information that sensing device is sent, data are corrected using built-in algorithm, and devise a kind of heavy-duty vehicle torque transmission shaft detection error bearing calibration, fully consider the influence of temperature and environmental factor to test result error, high sensitivity.
Description
Technical field
The present invention relates to a kind of torque-measuring apparatus more particularly to a kind of heavy-duty vehicle torque transmission shaft detection device and
A kind of heavy-duty vehicle torque transmission shaft detection error bearing calibration.
Background technique
Torque transmission shaft and revolving speed are to calculate and the Important Parameters of the characterization real-time power performance of engine, to its high efficiency and
The requirement of stability be it is self-evident, Principle of Torque Measurement is divided into balance force method, energy transformation approach and TRANSFER METHOD, balances force method
It is to go to balance tested torque using counter balance torque, thus the method for acquiring torque, energy transformation approach is according to law of conservation of energy
A kind of method of torque is measured, the size of tested torque, biography are determined by measuring other related with torque energy coefficienies
The method of passing is the variation (deformation, stress can strain) of the physical parameter generated according to elastic element when transmitting torque to measure torque
Method, balance force method is only applicable at the uniform velocity with static situation, and the indirect measurement factor of energy transformation approach is too many, and error
Greatly, this two groups of methods are unsuitable for dynamic and measure, thus be badly in need of it is a kind of using TRANSFER METHOD, can accurate real-time measurement transmission shaft turn round
The device of square.
Summary of the invention
The present invention has designed and developed a kind of heavy-duty vehicle torque transmission shaft detection device, and strain-gauge transducer is used to make
For the pedestal sensor of torque detection, and detects torque transmission shaft simultaneously using correction sensor and be corrected, anti-interference ability
By force, good reliability.
A further object of the invention is to devise a kind of heavy-duty vehicle torque transmission shaft detection error bearing calibration, sufficiently
Consider the influence of temperature and environmental factor to test result error, high sensitivity.
Technical solution provided by the invention are as follows:
A kind of heavy-duty vehicle torque transmission shaft detection error bearing calibration characterized by comprising
Heavy-duty vehicle torque transmission shaft detection device comprising:
Torque sensor is arranged on heavy-duty vehicle transmission shaft, for detecting torque transmission shaft；
Sensing device is corrected, is arranged on heavy-duty vehicle transmission shaft, for detecting torque transmission shaft, is made
For the reference correction data of detection device；
Analogue signal processor connects the torque sensor, receives the torque sensor acquisition
Data information, and converting to data information, filters and is converted to digital information after amplifying and send；
Data processor, connection analogue signal processor and correction sensing device receive the simulation letter
The data information that number processor and correction sensing device are sent, is corrected data using built-in algorithm；
Step 1: detecting the torque of transmission shaft by strain-gauge transducer:
Mα=(GIP·ΔR)/(R·K·Lα)；
Wherein, G is the coefficient of rigidity of transmission shaft, IPFor constant relevant to material of transmission shaft, Δ R is foil gauge shape
Become front and back resistance change rate, R is resistance before foil gauge deformation, and K is the sensitivity coefficient of foil gauge, LαFor strain-gauge transducer
Two snap rings distance；
By correction sensing device, the correction torque of transmission shaft is detected:
Mβ=(GIP·Δt·φ)/(T·Lβ)；
Wherein, G is the coefficient of rigidity of transmission shaft, IPFor constant relevant to material of transmission shaft, Δ t is that two photoelectricity are opened
The phase difference of output optical pulse signal is closed, φ is the central angle size of photoelectric code disk, and T is that optoelectronic switch exports a light pulse letter
Number corresponding pulsewidth, LβFor the distance between two photoelectric code disks；
Step 2: calculating torque after correction:
Wherein, TβTo correct sensor temperature.
Beneficial effect of the present invention
1, the present invention has designed and developed a kind of heavy-duty vehicle torque transmission shaft detection device, uses strain-gauge transducer
As the pedestal sensor of torque detection, and torque transmission shaft is detected simultaneously using correction sensor and is corrected, anti-interference energy
Power is strong, good reliability.
2, a kind of heavy-duty vehicle torque transmission shaft detection error bearing calibration has also been devised in the present invention, fully consider temperature and
Influence of the environmental factor to test result error, high sensitivity.
3, the correction sensor that the present invention designs is made of optoelectronic switch and photoelectric code disk, can be realized transmission shaft driven
Real-time detection in the process, it is practical.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of torque sensor of the present invention.
Fig. 2 is balanced bridge circuit schematic diagram of the present invention.
Fig. 3 is correction sensing device structure diagram of the present invention.
Fig. 4 is photoelectric code disk structural schematic diagram of the present invention.
Specific embodiment
Present invention will be described in further detail below with reference to the accompanying drawings, to enable those skilled in the art referring to specification text
Word can be implemented accordingly.
Heavy-duty vehicle torque transmission shaft detection device provided by the invention, comprising: torque sensor corrects sensing device,
Analogue signal processor and data processor.
Wherein, it as shown in Figure 1, torque sensor is arranged on heavy-duty vehicle transmission shaft, for detecting torque transmission shaft, wraps
It includes:
First resistor foil gauge 210 is arranged on transmission shaft surface, and is 45 ° with axis angle；
Second resistance foil gauge 220 is arranged on transmission shaft surface, and is -45 ° with axis angle；
3rd resistor foil gauge 230 is arranged on transmission shaft surface, and is 45 ° with axis angle；
4th resistance strain gage 240 is arranged on transmission shaft surface, and is -45 ° with axis angle；
Wherein, the angle of first resistor foil gauge 210 and 3rd resistor foil gauge 230 is 90 °；Second resistance foil gauge
220 and the 4th the angle of resistance strain gage 240 be 90 °.
Flexible substrates；
Resistance-strain sensing layer is attached in the flexible substrates, and the resistance value of resistance-strain sensing layer changes with shape
Become and changes；
Electrode, quantity are two, are arranged at resistance-strain sensing layer both ends.
As a preference, resistance-strain sensing layer is conductive metal film, the metallic film material is gold, platinum, copper
One of with graphene, conductive metal film has micron and nano gap structure.
As shown in Fig. 2, null-type bridge circuit, connects the torque inductive pick-up, before detecting transmission axle load
The change in resistance of torque inductive pick-up afterwards, and exported in the form of voltage difference；
Null-type bridge circuit includes: first resistor foil gauge 210, resistance value R1, second resistance foil gauge 220, resistance
Value is R2, 3rd resistor foil gauge 230, resistance value R3And the 4th resistance strain gage 240, resistance value R4Form Huygens's electricity
Bridge, voltage input end are 240 both ends of 3rd resistor foil gauge 230 and the 4th resistance strain gage, input voltage U, voltage output
End is 240 both ends of the 4th resistance strain gage of second resistance foil gauge 220, output voltage U0；
Measured axis is directly measured with resistance strain gage.It is resistance strain gage is pasted onto elastic element appropriate
On position, when elastic element is acted on by torque and generates mechanical strain, minor change will occur for the resistance of foil gauge, cause
Strain bridge disequilibrium exports the weak voltage signals directly proportional with torque value, then recycles signal conditioning circuit to letter
The processing such as number amplify and filter, finally by straining in mechanics and the relational expression of torque calculates corresponding torque value.
By the theory of the mechanics of materials it is found that when being acted on by torque, the direction of the principal stress on axis surface and the angle of axis are ± 45
Degree.Therefore on the elastic shaft of torque sensor, with paste two resistance-strains respectively in both direction of the axis at ± 45 degree
Piece forms differential full bridge formation, then the weak voltage signals of electric bridge output are directly proportional to torque value.
Torque changes after being driven axle load, and 210 resistance value of first resistor foil gauge becomes larger, second resistance foil gauge
220 resistance values become smaller, and voltage output end voltage becomes smaller.
As shown in figure 3, correction sensing device, is arranged on heavy-duty vehicle transmission shaft, for detecting torque transmission shaft, make
For the reference correction data of detection device；Include:
Photoelectric sensor is arranged on transmission shaft 300, for detecting torque transmission shaft；
Pulse signal processor, the light pulse signal biography for being used to detect photoelectric sensor change into defeated after electric signal
Out.
Wherein, photoelectric sensor, comprising:
Photoelectric code disk 320, quantity be two, centre have circular hole, be arranged be fixed on transmission shaft in parallel, and with it is described
Transmission shaft is co-axially mounted, and can be rotated with transmission shaft；
Optoelectronic switch 310, quantity are two, are arranged at the top of the photoelectric code disk, for detecting photoelectric code disk rotation
Position, and exported in the form of light pulse signal.
As shown in figure 4, photoelectric code disk has multiple equally distributed fan-shaped light holes and light-blocking hole, the light hole and gear
The corresponding central angle of unthreaded hole is identical.
When transmission shaft starts turning, the equally distributed fan-shaped light hole of two photoelectric code disks and light barrier distinguish inswept light
Electric switch forms light/dark light pulse signal, and optoelectronic switch exports signal in the form of square-wave pulse signal, in order to guarantee to measure
Accuracy, when two photoelectric code disks installation, must be coaxial with tested transmission shaft, to guarantee the inswept central angle phase of optoelectronic switch
Deng, when the non-loaded rotation of transmission shaft, there are a constant phase differences for two paths of signals, when being driven axle load increase, two
Phase difference between the two optical pulse signals of optoelectronic switch output is consequently increased, and passes through detection phase difference variation, Ji Keji
Calculate the windup-degree variation of two photoelectric code disks.
Analogue signal processor connects the torque sensor, receives the data information of the torque sensor acquisition,
And data information is converted, it filters and is converted to digital information after amplifying and send；
Data processor, connection analogue signal processor and correction sensing device, receive the analogue signal processor
The data information sent with correction sensing device, is corrected data using built-in algorithm.
Radiofrequency launcher connects data processor, is sent to radio receiving terminal for torque data after correcting.Make
It is a kind of preferred, wireless radio transmission circuit of the selection based on CC1110；In stator circuit, torque signal is connect by CC1110's
After receiving circuit reception, the Liquid Crystal Module for giving periphery carrys out the size and Orientation of real-time display instantaneous torque, and communicates with host computer.
Self-powered battery system is battery charging by the kinetic energy that transmission shaft rotation generates.
Self-powered battery system, comprising:
Charhing unit connects transmission shaft output end, is battery charging by the kinetic energy that transmission shaft rotation generates；
Battery unit is connected by multiple battery modules；
Control unit comprising controller and DC output circuit connect the battery unit output end, pass through controller
The charging voltage of charhing unit, and the voltage swing of regulating cell module are controlled, to obtain the battery case of different battery capacities.
A kind of heavy-duty vehicle torque transmission shaft detection error bearing calibration characterized by comprising
Step 1: by strain-gauge transducer, detecting the torque of transmission shaft,
Mα=(GIP·ΔR)/(R·K·Lα), unit N.m；
Wherein, G is the coefficient of rigidity of transmission shaft, is constant, IpFor transmission shaft relevant to material of transmission shaft is passed
Rotary inertia is constant, and Δ R is resistance change rate before and after foil gauge deformation, and unit Ω, R are electricity before foil gauge deformation
Resistance, it is constant that unit Ω, K, which are the sensitivity coefficient of foil gauge,；LαFor strain-gauge transducer two snap rings away from
From unit m；
By correction sensing device, the correction torque of transmission shaft is detected
Mβ=(GIP·Δt·φ)/(T·Lβ) its unit be N.m；
Wherein, G is the coefficient of rigidity of transmission shaft, is constant；IpTurn for transmission shaft relevant to material of transmission shaft
Dynamic inertia is constant, and Δ t is the phase difference of two optoelectronic switch output optical pulse signals, and unit s, φ are photoelectric code disk
Central angle size, unit is radian, and T is that optoelectronic switch exports the corresponding pulsewidth of a light pulse signal, unit s；
LβFor the distance between two photoelectric code disks, unit m；
Step 2: torque after correction is calculated
Wherein, TβTo correct sensor temperature, unit K.
Although the embodiments of the present invention have been disclosed as above, but its is not only in the description and the implementation listed
With it can be fully applied to various fields suitable for the present invention, for those skilled in the art, can be easily
Realize other modification, therefore without departing from the general concept defined in the claims and the equivalent scope, the present invention is simultaneously unlimited
In specific details and legend shown and described herein.
Claims (1)
1. a kind of heavy-duty vehicle torque transmission shaft detection error bearing calibration characterized by comprising
Heavy-duty vehicle torque transmission shaft detection device comprising:
Torque sensor is arranged on heavy-duty vehicle transmission shaft, for detecting torque transmission shaft；
Sensing device is corrected, the ginseng on heavy-duty vehicle transmission shaft, for detecting torque transmission shaft, as detection device is set
Examine correction data；
Analogue signal processor connects the torque sensor, receives the data information of the torque sensor acquisition, and right
Data information is converted, and is filtered and is converted to digital information after amplifying and sends；
Data processor, connection analogue signal processor and correction sensing device, receive the analogue signal processor and school
The data information that positive sensing device is sent, is corrected data using built-in algorithm；
Step 1: detecting the torque of transmission shaft by strain-gauge transducer:
Mα=(GIP·ΔR)/(R·K·Lα)；
Wherein, G is the coefficient of rigidity of transmission shaft, IPFor constant relevant to material of transmission shaft, Δ R is before foil gauge deformation
Resistance change rate afterwards, R are resistance before foil gauge deformation, and K is the sensitivity coefficient of foil gauge, LαIt is the two of strain-gauge transducer
The distance of snap ring；
By correction sensing device, the correction torque of transmission shaft is detected:
Mβ=(GIP·Δt·φ)/(T·Lβ)；
Wherein, G is the coefficient of rigidity of transmission shaft, IPFor constant relevant to material of transmission shaft, Δ t is that two optoelectronic switches are defeated
The phase difference of light pulse signal out, φ are the central angle size of photoelectric code disk, and T is that optoelectronic switch exports a light pulse signal pair
The pulsewidth answered, LβFor the distance between two photoelectric code disks；
Step 2: calculating torque after correction:
Wherein, TβTo correct sensor temperature.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610311215.4A CN105841865B (en) | 2016-05-11 | 2016-05-11 | A kind of heavy-duty vehicle torque transmission shaft detection device and error calibration method |
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| CN201610311215.4A CN105841865B (en) | 2016-05-11 | 2016-05-11 | A kind of heavy-duty vehicle torque transmission shaft detection device and error calibration method |
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| CN105841865B true CN105841865B (en) | 2019-03-15 |
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Families Citing this family (8)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106525396B (en) * | 2016-10-20 | 2018-12-25 | 国网上海市电力公司 | A kind of disconnecting switch mechanical load self-operated measuring unit and its detection method |
| CN106595929A (en) * | 2016-12-12 | 2017-04-26 | 陕西科技大学 | Dynamic torque measuring device and use method thereof |
| CN108254109B (en) * | 2017-12-19 | 2019-10-08 | 上海交通大学 | Torque detecting apparatus, method and system based on shaft phase difference |
| CN108494887B (en) * | 2018-06-05 | 2023-07-25 | 福建工程学院 | Method capable of loading and simulating various industrial Internet of things sensor devices |
| CN112504525B (en) * | 2020-12-02 | 2024-05-10 | 中国农业大学 | Passive low-power-consumption torque sensor of vehicle transmission shaft |
| CN114952693A (en) * | 2021-02-26 | 2022-08-30 | 硕丰工业股份有限公司 | Clutch type power transmission device and torsion detection module thereof |
| CN113916442B (en) * | 2021-10-14 | 2022-11-25 | 安徽江淮汽车集团股份有限公司 | Torque calibration method and system for transmission shaft of vehicle |
| CN114184495B (en) * | 2021-12-09 | 2024-01-26 | 中国船舶科学研究中心 | Ship equivalent Liang Lingmin degree coefficient calibration fixing device and determination method |
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2016
- 2016-05-11 CN CN201610311215.4A patent/CN105841865B/en not_active Expired - Fee Related
Patent Citations (4)
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|---|---|---|---|---|
| GB2285865A (en) * | 1994-01-14 | 1995-07-26 | Westland Aerospace Ltd | Strain measurement system |
| CN101898520A (en) * | 2010-04-27 | 2010-12-01 | 邵宇航 | Power generation device of rotating shaft for vehicle |
| CN102135460A (en) * | 2011-01-17 | 2011-07-27 | 武汉理工大学 | Device for measuring torque and power of photoelectric non-contact rotation shaft |
| CN103777041A (en) * | 2014-02-11 | 2014-05-07 | 重庆建设工业(集团)有限责任公司 | Calibration device and calibration method for torque and rotation speed measuring instrument |
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