CN205593690U - Heavy vehicle transmission shaft torque detecting device - Google Patents
Heavy vehicle transmission shaft torque detecting device Download PDFInfo
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- CN205593690U CN205593690U CN201620426447.XU CN201620426447U CN205593690U CN 205593690 U CN205593690 U CN 205593690U CN 201620426447 U CN201620426447 U CN 201620426447U CN 205593690 U CN205593690 U CN 205593690U
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- transmission shaft
- heavy vehicle
- resistance
- strain gage
- torsion
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Abstract
The utility model discloses a heavy vehicle transmission shaft torque detecting device, include: the moment of torsion inductive pick -up, it sets up on the heavy vehicle transmission shaft for response transmission shaft moment of torsion big microvariation, and with the form output of voltage difference, the analog signal processing ware, its connection the moment of torsion inductive pick -up is received the voltage difference data that the moment of torsion inductive pick -up was gathered to change the data message, filtering with amplify after convert digital information into and send away, data processor, it connects the analog signal processing ware, receives the analog signal processing ware has reduced measuring error with the data message that sends, and sensitivity is high.
Description
Technical field
This utility model relates to a kind of torque-measuring apparatus, particularly relates to a kind of heavy vehicle torque transmission shaft detection device.
Background technology
nullTorque transmission shaft and rotating speed are the Important Parameters calculating and characterizing the real-time power performance of electromotor，Requirement to its high efficiency and stability is self-evident，Principle of Torque Measurement is divided into balance force method、Energy transformation approach and TRANSFER METHOD，Balance force method is to utilize counter balance torque to go to balance tested moment of torsion，Thus the method trying to achieve moment of torsion，Energy transformation approach is to measure a kind of method of moment of torsion according to law of conservation of energy，The size of tested moment of torsion is determined by measuring other energy coefficient relevant with moment of torsion，TRANSFER METHOD is the change (deformation of the physical parameter produced when transmitting moment of torsion according to flexible member、Stress can strain) method of measuring moment of torsion，Balance force method be only applicable at the uniform velocity with static situation，The factor of indirectly measuring of energy transformation approach is too many，And error is big，This two prescriptions method is unsuitable for kinetic measurement，Therefore it is badly in need of one and uses TRANSFER METHOD，The device of torque transmission shaft can be measured the most in real time.
Utility model content
This utility model has designed and developed a kind of heavy vehicle torque transmission shaft detection device, on the elastic shaft of torque sensor, becoming with axis ± both direction of 45 degree on paste two resistance strain gages respectively, form differential full bridge formation, sensing torque transmission shaft size variation, and export with the form of voltage difference, reduce measurement error.
The technical scheme that this utility model provides is:
A kind of heavy vehicle torque transmission shaft detection device, including:
Moment of torsion inductive transducer, it is arranged on heavy vehicle power transmission shaft, is used for sensing torque transmission shaft size variation, and exports with the form of voltage difference；
Analogue signal processor, it connects described moment of torsion inductive transducer, receives the voltage difference data that described moment of torsion inductive transducer gathers, and change data message, be converted to digital information and send after filtering and amplifying；
Data processor, it connects analogue signal processor, receives the data message of described analogue signal processor and transmission, utilizes built-in algorithms to be corrected data.
Preferably, described moment of torsion inductive transducer includes:
First resistance strain gage, it is arranged on power transmission shaft surface, and is 45 ° with axis angle；
Second resistance strain gage, it is arranged on power transmission shaft surface, and is-45 ° with axis angle；
3rd resistance strain gage, it is arranged on power transmission shaft surface, and is 45 ° with axis angle；
4th resistance strain gage, it is arranged on power transmission shaft surface, and is-45 ° with axis angle；
Wherein, the angle of the first resistance strain gage and the 3rd resistance strain gage is 90 °；The angle of the second resistance strain gage and the 4th resistance strain gage is 90 °.
Preferably, described resistance strain gage, including:
Flexible substrates；
Resistance-strain sensing layer, it is attached in described flexible substrates, and the resistance value of described resistance-strain sensing layer changes with alteration of form；
Electrode, its quantity is two, is arranged on described resistance-strain sensing layer two ends.
Preferably, described resistance-strain sensing layer is conductive metal film, and described conductive metal film material is the one in gold, platinum, copper and Graphene.
Preferably, described conductive metal film has micron and nano gap structure.
Preferably, also including radiofrequency launcher, it connects described data processor, for the torque data recorded is sent to radio receiving terminal.
Preferably, also including self-powered battery system, it rotates, by power transmission shaft, the kinetic energy produced is that battery charges.
Preferably, described self-powered battery system, including:
Charhing unit, it connects power transmission shaft outfan；
Battery unit, it is connected by multiple battery modules；
Control unit, it is included controller and DC output circuit, connects described battery unit outfan, is controlled the charging voltage of charhing unit, and the voltage swing of regulating cell module by controller, to obtain the battery case of different battery capacity.
Beneficial effect described in the utility model
1, this utility model has designed and developed a kind of heavy vehicle torque transmission shaft detection device, on the elastic shaft of torque sensor, becoming with axis ± both direction of 45 degree on paste two resistance strain gages respectively, form differential full bridge formation, sensing torque transmission shaft size variation, and export with the form of voltage difference, reduce measurement error.
2, the torque transmission shaft detection device of this utility model design, it is capable of the real-time detection during transmission shaft driven, practical.
Accompanying drawing explanation
Fig. 1 is the structural representation of torque sensor described in the utility model.
Fig. 2 is balanced bridge circuit schematic diagram described in the utility model.
Fig. 3 is correction sensing device structural representation described in the utility model.
Fig. 4 is photoelectric code disk structural representation described in the utility model.
Detailed description of the invention
Below in conjunction with the accompanying drawings this utility model is described in further detail, to make those skilled in the art can implement according to this with reference to description word.
The heavy vehicle torque transmission shaft detection device that this utility model provides, including: torque sensor, correct sensing device, analogue signal processor and data processor.
Wherein, as it is shown in figure 1, torque sensor is arranged on heavy vehicle power transmission shaft, it is used for detecting torque transmission shaft, including:
First resistance strain gage 210, it is arranged on power transmission shaft surface, and is 45 ° with axis angle；
Second resistance strain gage 220, it is arranged on power transmission shaft surface, and is-45 ° with axis angle；
3rd resistance strain gage 230, it is arranged on power transmission shaft surface, and is 45 ° with axis angle；
4th resistance strain gage 240, it is arranged on power transmission shaft surface, and is-45 ° with axis angle；
Wherein, the angle of the first resistance strain gage 210 and the 3rd resistance strain gage 230 is 90 °；The angle of the second resistance strain gage 220 and the 4th resistance strain gage 240 is 90 °.
Flexible substrates；
Resistance-strain sensing layer, it is attached in described flexible substrates, and the resistance value of resistance-strain sensing layer changes with alteration of form；
Electrode, its quantity is two, is arranged on resistance-strain sensing layer two ends.
Preferred as one, resistance-strain sensing layer is conductive metal film, and described conductive metal film material is the one in gold, platinum, copper and Graphene, and conductive metal film has micron and nano gap structure.
As in figure 2 it is shown, null-type bridge circuit, it connects described moment of torsion inductive transducer, for detecting the change in resistance of moment of torsion inductive transducer before and after power transmission shaft loads, and exports with the form of voltage difference；
Null-type bridge circuit includes: the first resistance strain gage 210, and its resistance is R1, the second resistance strain gage 220, its resistance is R2, the 3rd resistance strain gage 230, its resistance is R3, and the 4th resistance strain gage 240, its resistance is R4Composition Huygens's electric bridge, voltage input end is the 3rd resistance strain gage 230 and the 4th resistance strain gage 240 two ends, and input voltage is U, and voltage output end is the second resistance strain gage 220 the 4th resistance strain gage 240 two ends, and output voltage is U0；
With resistance strain gage, measured axis is directly measured.It is to be pasted onto on the appropriate location of flexible member by resistance strain gage, when flexible member is produced mechanical strain by moment of torsion effect, the resistance of foil gauge will occur minor variations, cause strain bridge disequilibrium, the weak voltage signals that output and torque value are directly proportional, then signal is amplified by recycling signal conditioning circuit and filtering etc. processes, and is finally calculated corresponding torque value by the relational expression of strain and moment of torsion in mechanics.From the theory of the mechanics of materials, when by moment of torsion effect, the direction of the principal stress on axle surface and the angle of axis are ± 45 degree.Therefore on the elastic shaft of torque sensor, becoming with axis ± both direction of 45 degree on paste two resistance strain gages respectively, form differential full bridge formation, then the weak voltage signals of electric bridge output is directly proportional to torque value.
After power transmission shaft loads, moment of torsion changes, and the first resistance strain gage 210 resistance value becomes big, and the second resistance strain gage 220 resistance value diminishes, and voltage output end voltage diminishes.
In another embodiment, also including correcting sensing device, as it is shown on figure 3, correction sensing device, it is arranged on heavy vehicle power transmission shaft, is used for detecting torque transmission shaft, as the reference correction data of detection device；Including:
Photoelectric sensor, it is arranged on power transmission shaft, is used for detecting torque transmission shaft；
Pulse signal processor, it passes for the light pulse signal detected by photoelectric sensor after changing the signal of telecommunication into and exports.
Wherein, photoelectric sensor, including:
Photoelectric code disk, its quantity is two, and centre has a circular hole, parallel sheathed is fixed on power transmission shaft, and is co-axially mounted with described power transmission shaft, it is possible to rotate with power transmission shaft；
Photoswitch, its quantity is two, is arranged on described photoelectric code disk top, is used for detecting photoelectric code disk position of rotation, and exports with the form of light pulse signal.
As shown in Figure 4, photoelectric code disk has multiple equally distributed fan-shaped light hole and hole of being in the light, and the central angle that described light hole is corresponding with hole of being in the light is identical.
When power transmission shaft starts to rotate, two equally distributed fan-shaped light holes of photoelectric code disk and the most inswept photoswitch of light barrier define light/dark light pulse signal, signal is exported by photoswitch with square-wave pulse signal form, in order to ensure the accuracy measured, two photoelectric code disks must be coaxial with tested power transmission shaft when installing, equal with the central angle that guarantee photoswitch is inswept, when the non-loaded rotation of power transmission shaft, there is a constant phase contrast in two paths of signals, when power transmission shaft load increases, phase contrast between the two optical pulse signals of two photoswitch outputs is consequently increased, changed by detection phase contrast, the windup-degree change of two photoelectric code disks can be calculated.
Analogue signal processor, it connects described torque sensor, receives the data message that described torque sensor gathers, and change data message, be converted to digital information and send after filtering and amplifying；
Data processor, it connects analogue signal processor and correction sensing device, receives described analogue signal processor and correct the data message that sensing device sends, utilizing built-in algorithms to be corrected data.
Radiofrequency launcher, it connects data processor, for torque data after correction is sent to radio receiving terminal.Preferred as one, select wireless radio transmission circuit based on CC1110；In stator circuit, after torque signal is received by the reception circuit of CC1110, the Liquid Crystal Module giving periphery shows the size and Orientation of instantaneous torque, and and upper machine communication in real time.
Self-powered battery system, it rotates, by power transmission shaft, the kinetic energy produced is that battery charges.
Self-powered battery system, including:
Charhing unit, it connects power transmission shaft outfan, is that battery charges by the kinetic energy of power transmission shaft rotation generation；
Battery unit, it is connected by multiple battery modules；
Control unit, it is included controller and DC output circuit, connects described battery unit outfan, is controlled the charging voltage of charhing unit, and the voltage swing of regulating cell module by controller, to obtain the battery case of different battery capacity.
Although embodiment of the present utility model is disclosed as above, but it is not restricted in description and embodiment listed utilization, it can be applied to various applicable field of the present utility model completely, for those skilled in the art, it is easily achieved other amendment, therefore, under the general concept limited without departing substantially from claim and equivalency range, this utility model is not limited to specific details and shown here as the legend with description.
Claims (8)
1. a heavy vehicle torque transmission shaft detection device, it is characterised in that including:
Moment of torsion inductive transducer, it is arranged on heavy vehicle power transmission shaft, is used for sensing torque transmission shaft size variation, and exports with the form of voltage difference；
Analogue signal processor, it connects described moment of torsion inductive transducer, receives the voltage difference data that described moment of torsion inductive transducer gathers, and change data message, be converted to digital information and send after filtering and amplifying；
Data processor, it connects analogue signal processor, receives the data message of described analogue signal processor and transmission.
Heavy vehicle torque transmission shaft the most according to claim 1 detection device, it is characterised in that described moment of torsion inductive transducer includes:
First resistance strain gage, it is arranged on power transmission shaft surface, and is 45 ° with axis angle；
Second resistance strain gage, it is arranged on power transmission shaft surface, and is-45 ° with axis angle；
3rd resistance strain gage, it is arranged on power transmission shaft surface, and is 45 ° with axis angle；
4th resistance strain gage, it is arranged on power transmission shaft surface, and is-45 ° with axis angle；
Wherein, the angle of the first resistance strain gage and the 3rd resistance strain gage is 90 °；The angle of the second resistance strain gage and the 4th resistance strain gage is 90 °.
Heavy vehicle torque transmission shaft the most according to claim 2 detection device, it is characterised in that described resistance strain gage, including:
Flexible substrates；
Resistance-strain sensing layer, it is attached in described flexible substrates, and the resistance value of described resistance-strain sensing layer changes with alteration of form；
Electrode, its quantity is two, is arranged on described resistance-strain sensing layer two ends.
Heavy vehicle torque transmission shaft the most according to claim 3 detection device, it is characterised in that described resistance-strain sensing layer is conductive metal film, and described conductive metal film material is the one in gold, platinum, copper and Graphene.
Heavy vehicle torque transmission shaft the most according to claim 4 detection device, it is characterised in that described conductive metal film has micron and nano gap structure.
Heavy vehicle torque transmission shaft the most according to claim 1 detection device, it is characterised in that also including radiofrequency launcher, it connects described data processor, for the torque data recorded is sent to radio receiving terminal.
Heavy vehicle torque transmission shaft the most according to claim 1 detection device, it is characterised in that also include self-powered battery system, it rotates, by power transmission shaft, the kinetic energy produced is that battery charges.
Heavy vehicle torque transmission shaft the most according to claim 7 detection device, it is characterised in that described self-powered battery system, including:
Charhing unit, it connects power transmission shaft outfan；
Battery unit, it is connected by multiple battery modules；
Control unit, it is included controller and DC output circuit, connects described battery unit outfan, is controlled the charging voltage of charhing unit, and the voltage swing of regulating cell module by controller, to obtain the battery case of different battery capacity.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620426447.XU CN205593690U (en) | 2016-05-11 | 2016-05-11 | Heavy vehicle transmission shaft torque detecting device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620426447.XU CN205593690U (en) | 2016-05-11 | 2016-05-11 | Heavy vehicle transmission shaft torque detecting device |
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|---|---|
| CN205593690U true CN205593690U (en) | 2016-09-21 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201620426447.XU Expired - Fee Related CN205593690U (en) | 2016-05-11 | 2016-05-11 | Heavy vehicle transmission shaft torque detecting device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106679611A (en) * | 2017-01-23 | 2017-05-17 | 武汉科技大学 | Internal strain measuring device of KR desulphurization stirrer blades |
| WO2018064989A1 (en) * | 2016-10-09 | 2018-04-12 | 深圳瑞湖科技有限公司 | Flexible sensor and application thereof |
-
2016
- 2016-05-11 CN CN201620426447.XU patent/CN205593690U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2018064989A1 (en) * | 2016-10-09 | 2018-04-12 | 深圳瑞湖科技有限公司 | Flexible sensor and application thereof |
| US10842397B2 (en) | 2016-10-09 | 2020-11-24 | Shenzhen Ruihu Technology Co., Ltd. | Flexible sensor and application thereof |
| CN106679611A (en) * | 2017-01-23 | 2017-05-17 | 武汉科技大学 | Internal strain measuring device of KR desulphurization stirrer blades |
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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: 20160921 Termination date: 20170511 |
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| CF01 | Termination of patent right due to non-payment of annual fee |