CN205811828U - Axletree TRT, self-powered sensor and car status information supervising device - Google Patents
Axletree TRT, self-powered sensor and car status information supervising device Download PDFInfo
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- CN205811828U CN205811828U CN201620536036.6U CN201620536036U CN205811828U CN 205811828 U CN205811828 U CN 205811828U CN 201620536036 U CN201620536036 U CN 201620536036U CN 205811828 U CN205811828 U CN 205811828U
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Abstract
The utility model discloses axletree TRT, self-powered sensor and car status information supervising device, axletree TRT includes magnetic conduction fluted disc and generator unit；Described magnetic conduction fluted disc has at least one and protrudes teeth portion or multiple protrusion teeth portion of uniform intervals setting；Described magnetic conduction fluted disc is fixed on axletree；Described generator unit includes housing, and the electromagnetic induction coil that is fixed in housing and the N pole permanent magnet being respectively arranged at described electromagnetic induction coil both sides and S pole permanent magnet；Described generator unit is arranged at the position of the outside preset distance away from described magnetic conduction fluted disc.This utility model can apply to the power supply of the vehicle arrangement of any power supply inconvenience, can realize generating, vehicle-state detection, vehicle-state system monitoring in the case of without externally fed.
Description
Technical field
This utility model relates to electronic technology field, particularly relates to axletree TRT, self-powered sensor and vehicle shape
State information monitoring device.
Background technology
The safety of vehicle is the important indicator of its performance.Employing is typically required right when carrying out the safety Design of vehicle
The sensor that vehicle various states parameter measures.But, in some cases, the power supply to sensor there may be tired
Difficult.Such as, exist and need the specific part of existing vehicle is monitored and before this position and be not designed with supply of electric power
Situation.The most such as, in terms of railway applications, constantly promoting of railway operation speed makes the information monitoring of secure context become more
Coming the most important, but do not provide power supply supply on current part railway freight train, therefore electronic sensor does not arrange in shipping
Obtaining universal use on car, the safety information level gap compared with passenger train causing goods train is the hugest.Therefore
In the urgent need to a kind of at the dress without realizing vehicle-state monitoring on externally fed power supply, the vehicle part that connects without any cable
Put.
Utility model content
In order to solve above-mentioned technical problem, this utility model provides axletree TRT, self-powered sensor and vehicle
Status information supervising device.
The axletree TRT that this utility model provides, including magnetic conduction fluted disc and generator unit；
Described magnetic conduction fluted disc has at least one and protrudes teeth portion or multiple protrusion teeth portion of uniform intervals setting；Described magnetic conduction
Fluted disc is fixed on axletree；
Described generator unit includes housing, and the electromagnetic induction coil that is fixed in housing and be respectively arranged at described
The N pole permanent magnet of electromagnetic induction coil both sides and S pole permanent magnet；Described generator unit is arranged at the outside away from described magnetic conduction fluted disc
The position of preset distance.
Above-mentioned magnetic conduction fluted disc also includes following characteristics:
Described generator unit also includes the rectifying voltage regulator being connected with the described electromagnetic induction coil signal of telecommunication, or, also
Including the battery energy storage unit being connected with the described rectifying voltage regulator signal of telecommunication.
Above-mentioned magnetic conduction fluted disc also includes following characteristics:
The width of described protrusion teeth portion be the first distance with the difference of tolerable error distance to the first distance and tolerable error away from
Value in the range of sum, or be second distance with the difference of tolerable error distance to second distance with tolerable error apart from it
Value in the range of with, or be that the 3rd distance difference with tolerable error distance is to the 3rd distance and tolerable error distance sum
In the range of value；
Described first distance on the permanent magnet of described N pole away from described electromagnetic induction coil apart from farthest side to described electricity
Away from the described N pole permanent magnet distance apart from farthest side on magnetic induction coil；
Described second distance be on the permanent magnet of described S pole away from described electromagnetic induction coil apart from farthest side to described electricity
Away from the described S pole permanent magnet distance apart from farthest side on magnetic induction coil；
Described 3rd distance is described N pole permanent magnet, the width of the width of described S pole permanent magnet and described electromagnetic induction coil
Degree sum.
Above-mentioned magnetic conduction fluted disc also includes following characteristics:
The outermost of the protrusion teeth portion of described magnetic conduction fluted disc is arcuate structure, on the housing of described generator unit described in distance
The nearest side of magnetic conduction fluted disc is arcuate structure, and the arcuate structure of the arcuate structure of described protrusion teeth portion and described generator unit
Parallel.
Above-mentioned magnetic conduction fluted disc also includes following characteristics:
A part for the axle end that described magnetic conduction fluted disc 100 is integrally formed.
Above-mentioned magnetic conduction fluted disc also includes following characteristics:
The material of described magnetic conduction fluted disc 100 is permeability magnetic material.
This utility model additionally provides a kind of self-powered sensor, including: described axletree TRT, also include physics
Sensitive Apparatus and the signal acquisition circuit being connected with the physical sensor part signal of telecommunication；Wherein, described signal acquisition circuit and institute
State rectifying voltage regulator and the described battery energy storage unit signal of telecommunication connects.
Described self-powered sensor also includes following characteristics:
Described physical sensor part is temperature-sensing element (device)；
Or, described physical sensor part is Hall effect semiconductor device；
Or, described physical sensor part is vibration induction device；
Or, described physical sensor part is sound sensing device.
This utility model additionally provides a kind of car status information monitoring system, and described system includes that above-mentioned self-powered senses
Device, also includes the wireless signal transmission module electrically connected with described signal acquisition circuit.
Described car status information monitoring system also includes following characteristics:
Described system also includes: with described signal acquisition circuit, described battery energy storage unit and described rectifying voltage regulator
The wire circuit interface all electrically connected.
This utility model can apply to the power supply of the vehicle arrangement of any power supply inconvenience, can be in the feelings without externally fed
Generating, vehicle-state detection, vehicle-state system monitoring is realized under condition.
Accompanying drawing explanation
The accompanying drawing constituting a part of the present utility model is further appreciated by of the present utility model for providing, and this practicality is new
The schematic description and description of type is used for explaining this utility model, is not intended that improper restriction of the present utility model.?
In accompanying drawing:
Fig. 1 is the schematic diagram of the axletree TRT according to one embodiment of the application；
Fig. 2 is the mounting means schematic diagram of the axletree TRT according to one embodiment of the application；
Fig. 3 is the schematic diagram of the self-powered sensor according to one embodiment of the application；
Fig. 4 is the schematic diagram of the car status information monitoring system according to one embodiment of the application.
Detailed description of the invention
For making the purpose of this utility model embodiment, technical scheme and advantage clearer, new below in conjunction with this practicality
Accompanying drawing in type embodiment, is clearly and completely described the technical scheme in this utility model embodiment, it is clear that retouched
The embodiment stated is a part of embodiment of this utility model rather than whole embodiments.Based on the enforcement in this utility model
Example, the every other embodiment that those of ordinary skill in the art are obtained under not making creative work premise, broadly fall into
The scope of this utility model protection.It should be noted that in the case of not conflicting, in embodiment in the application and embodiment
Feature can mutual combination in any.
Below in conjunction with the accompanying drawings this utility model is described in detail.
Fig. 1 is the schematic diagram of the axletree TRT according to one embodiment of the application.As it can be seen, axletree generating dress
Put and include magnetic conduction fluted disc 100 and generator unit 200.Magnetic conduction fluted disc 100 has at least one and protrudes teeth portion or uniform intervals setting
Multiple protrusion teeth portion；Magnetic conduction fluted disc 100 is fixed on axletree 300.Generator unit 200 includes housing 1, and is fixed on housing
Electromagnetic induction coil 4 in 1 and be respectively arranged at N pole the permanent magnet 2 and S pole permanent magnet 3 of electromagnetic induction coil 4 both sides；Send out
Electric unit 200 is arranged at the position of the outside preset distance away from magnetic conduction fluted disc 100.
Magnetic conduction fluted disc 100 as the rotor portion of axletree TRT be arranged at axletree 300 one end and can be with axletree
300 rotate with one heart, and generator unit 200 is installed on fixing outside magnetic conduction fluted disc 100 as the stationary part of axletree TRT
Position.N pole permanent magnet 2 and S pole permanent magnet 3 is arranged in the both sides of electromagnetic induction coil 4.When axletree 300 rotates, magnetic conduction
Fluted disc 100 rotates relative to generator unit 200.
In another kind of embodiment, the outermost of the protrusion teeth portion of magnetic conduction fluted disc 100 is arcuate structure, generator unit 200
The side that on housing, distance magnetic conduction fluted disc 100 is nearest is arcuate structure, and protrudes arcuate structure and the generator unit 200 of teeth portion
Arcuate structure is parallel, i.e. protrude each point on the arcuate structure of teeth portion in the direction of its normal with the arc of described generator unit 200
The distance of shape structure is the most identical.
In another kind of embodiment, the inner side of magnetic conduction fluted disc 100 is provided with one or more bolt hole, for by magnetic conduction fluted disc
100 are fixed on Vehicle Axles end so that it is can rotate with one heart with axletree.In another embodiment, magnetic conduction fluted disc 100 can
Being formed by directly the axle head parts outline of axletree 200 being processed into analogous shape, magnetic conduction fluted disc 100 is integrally formed
A part for axle end.In another embodiment, magnetic conduction fluted disc 100 may be provided at the middle part of axletree 200 rather than end.
Magnetic conduction fluted disc 100 has one or more protrusion teeth portion, so that synchronization is only by the magnetic field of a permanent magnet
Importing electromagnetic induction coil 4, the width protruding teeth portion is that first distance difference with tolerable error distance is to the first distance and tolerance
Value in the range of error distance sum, or be that the second distance difference with tolerable error distance is to second distance and tolerable error
Value in the range of distance sum, or be that the 3rd distance difference with tolerable error distance is to the 3rd distance and tolerable error distance
Value in the range of sum.Tolerable error distance is 0.1 centimetre～0.5 centimetre.Wherein, the first distance on N pole permanent magnet 2 away from
Electromagnetic induction coil 4 on farthest side to electromagnetic induction coil 4 away from the N pole permanent magnet 2 distance apart from farthest side；
Second distance be on S pole permanent magnet 3 away from electromagnetic induction coil 4 on farthest side to electromagnetic induction coil 4 away from S pole permanent magnetism
Body 3 is apart from the distance of farthest side；3rd distance is N pole permanent magnet 2, the width of S pole permanent magnet 3 and electromagnetic induction coil 4
Width sum.
In one embodiment, magnetic conduction fluted disc 100 has multiple protrusion teeth that uniform intervals is arranged, and the shape protruding tooth can be
Rectangle.When protruding tooth near N pole permanent magnet 2 for one, electromagnetic induction coil 4 senses and protrudes the N pole field that tooth conduction comes, when
Protrude the S pole field that tooth electromagnetic induction coil 4 when the permanent magnet 3 of S pole senses that tooth conduction comes.In other words, magnetic conduction fluted disc 100
During rotation, in the area of space between magnetic conduction fluted disc 100 and generator unit, when protruding tooth and closing on generator unit and convex
Go out the periodically alternate of permeability when tooth leaves generator unit.The permanent magnet of two opposed polarities and electromagnetic induction coil 4
Between due to the periodicity alternate of permeability, electromagnetic induction coil 4 creates the alternation magnetic of polar cycle change
, so that electromagnetic induction coil 4 produces alternating current.
The center of electromagnetic induction coil 4 can add the magnetic core that soft magnetism material such as silicon steel or pure iron etc. make, to improve generating effect
Rate.In another embodiment, the permeability magnetic materials such as magnetic conduction fluted disc 100 can be selected for pure iron, silicon steel are processed into.Due to magnetic conduction fluted disc
100 is not permanent magnet material, and thus without making magnetic on axletree and bearing, in axletree motor process, produced alternating magnetic field can also
Make magnetic teeth wheel disc demagnetization.
In another embodiment, axletree TRT can also include rectifying voltage regulator 5.Rectifying voltage regulator 5 will send
AC rectification, become DC voltage after filtering, and voltage stabilizing become needed for magnitude of voltage after power for other electric parts.
In another embodiment, axletree TRT can also include battery energy storage unit 6, to send axletree TRT
Electric energy store.
Fig. 2 is the mounting means schematic diagram of the axletree TRT of an embodiment.Generator unit is sealed in metal coating
In shell 1, metal coating shell 1 is mountable to outside the adapter 500 of vehicle bearing fit tightly fixing with adapter 500.Axletree
The each several part of TRT is in addition to the motive position that magnetic conduction fluted disc 100 is installed on such as axletree, and other each several part is the most hermetically sealed
In metal coating shell 1, and it is installed on the position static relative to vehicle body.According to the present embodiment, owing to all circuit parts can
Seal structure to use, therefore can with Water-proof and oil-proof, dust-proof, anti-collide with, adapt to rugged environment requirement.Further, since this reality
All it is integrated in metal coating shell 11 by the novel axletree TRT all parts in addition to magnetic conduction fluted disc 100, therefore installs
Simple in construction, can carry out rapid refit to existing vehicle, and is easy to check, dismounts, safeguards.
Fig. 3 is the schematic diagram of self-powered sensor in an embodiment.As it is shown on figure 3, self-powered sensor includes above-mentioned retouching
Axletree TRT, rectifying voltage regulator 5 and the battery energy storage unit 6 stated, the axletree wherein comprised in self-powered sensor is sent out
The structure and composition module of electric installation has been described in the preceding article, and here is omitted.
The physical state of object to be measured (such as axletree) is detected by physical sensor part 7, and according to object to be measured
The change of reason characteristic produces and detects output accordingly.In one embodiment, self-powered sensor is self-powered axletree sensor.Signal
Acquisition Circuit 8 its electric energy of being provided of axletree TRT is provided, rectifying voltage regulator 5 when magnetic conduction fluted disc 100 rotates, signal
Acquisition Circuit 8 provides power supply to supply, and the unnecessary electric energy that axletree TRT is generated by battery energy storage unit 6 stores,
To provide power supply to supply when magnetic conduction fluted disc 100 does not rotates or rotating speed is low for signal acquisition circuit 8.Physical sensor part 7 senses
Signal, signal acquisition circuit 8 gathers and processes the signal that physics Sensitive Apparatus 7 is sensed, and the signal after processing converts
Export for digital signal.
In another embodiment, physical sensor part 7 can be temperature-sensing element (device).Such as, physical sensor part 7 can use temperature
Quick resistance or platinum resistance.The variations in temperature of vehicle bearing 400 will cause the resistance value of physical sensor part 7 to occur strain
Change.Signal acquisition circuit 8 measures the resistance of temperature sensor 7, and it is right to calculate resistance value institute by internal digital circuit
The temperature value answered, it is achieved the function of self-powered axletree temperature sensor.
In another embodiment, physical sensor part 7 can use Hall effect semiconductor device.The speed of vehicle bearing 400
Degree change will cause the voltage of physical sensor part 7 or current cycle to synchronize to become change.Signal acquisition circuit 8 measures physics
The signal frequency of Sensitive Apparatus 7, and calculate corresponding axletree tachometer value by internal digital circuit, it is achieved confession electric car
The function of shaft speed sensor.In another embodiment, turning of current wheel can be calculated by axletree rotating speed and wheel circumference
Speed, it is achieved Vehicle Speed measures function.Additionally, by the rotating speed of Vehicle Speed and current wheel is compared,
Can determine whether whether wheel actual speed is less than the theoretical rotational speed value corresponding to Current vehicle travel speed, thus realize wheel lock up
Measurement judge, constitute vehicle limited slip, the detection sensor of anti-lock.
In another embodiment, physical sensor part 7 can use the sensing device of vibration sensing.Signal acquisition circuit 8 can
Measure intensity and the frequency spectrum of vibration signal produced by physical sensor part 7, thus constitute the vibration for axle failures diagnosis
Sensor.
In another embodiment, physical sensor part 7 can use the sensing device of sound sensitive, with the sound to object to be measured
The change of tune detects.
In another embodiment, physical sensor part 7 can use imageing sensor, adopts with the image to object to be measured
Collection.
In another embodiment, self-powered sensor can use multiple physical sensor part 7 simultaneously, with respectively to axletree
Temperature, rotating speed, the many kinds of parameters such as vibration, sound, image measures.
An embodiment according to the application, each several part of self-powered sensor is except magnetic conduction fluted disc 100 is in such as axletree
Outside motive position, other each several part is the most hermetically sealed in metal coating shell 11, and is installed on the position static relative to vehicle body.
As in figure 2 it is shown, metal coating shell 11 is mountable to outside vehicle bearing adapter 500 fit tightly fixing with adapter 500.Root
According to the present embodiment, owing to all circuit parts can use sealing structure, therefore can with Water-proof and oil-proof, dust-proof, anti-collide with, suitable
Answer rugged environment requirement.Further, since self-powered sensor of the present utility model is the most integrated except all parts of magnetic conduction fluted disc 100
In metal coating shell 11, therefore mounting structure is simple, and existing vehicle can carry out rapid refit, and be easy to check, dismounting,
Safeguard.
Additionally, due to self-powered can be realized according to the sensor of present embodiment, appointing of vehicle therefore can be installed on flexibly
What region of interest and without considering power-supply service.Inconvenience on its vehicle being particularly suited for being not easy to offer supply of electric power or vehicle
In the position providing supply of electric power.
Fig. 4 is the schematic diagram of car status information monitoring system in an embodiment.As shown in Figure 4, car status information prison
Ore-controlling Role includes above-mentioned self-powered sensor and wireless signal transmission module 9.The structure and composition module of self-powered sensor exists
Hereinbefore having been described, here is omitted.
Wireless signal transmission module 9 electrically connects with signal acquisition circuit 8, for the letter generated by signal acquisition circuit 8
Number it is wirelessly transmitted to external reception equipment, thus realizes the networking function of different parts all the sensors.
In another embodiment, car status information monitoring system also includes wired circuit interface 10.Wire circuit interface
10, it is provided that the wired connection interface being connected with other external device (ED)s (such as other sensors), to realize described car status information
Signal and the wire transmission of electric energy between monitoring system and other external device (ED)s.According to an example, wire circuit interface 10 is right
Other site sensor are powered, and gather the data of other site sensor.
An embodiment according to the application, each wheel 600 on vehicle is respectively mounted the monitoring of a set of car status information
System, each car status information monitoring system passes through wireless signal transmission module 9 by the detection signal for each wheel 600
Transmission to same processor collects, thus can realize the integral monitoring to vehicle-state.
Metal all it is integrated in except all parts of magnetic conduction fluted disc 100 due to car status information monitoring system of the present utility model
In containment vessel 11, therefore mounting structure is simple, and existing vehicle can carry out rapid refit, and is easy to check, dismounts, safeguards.
Additionally, due to self-powered can be realized according to the car status information monitoring system of present embodiment, therefore can be flexible
It is installed on any region of interest of vehicle and without considering power-supply service, it is particularly suited for the car being not easy to provide supply of electric power
Or vehicle on be not easy to provide supply of electric power position.
This utility model can apply to the power supply of the vehicle arrangement of any power supply inconvenience, can be in the feelings without externally fed
Generating, vehicle-state detection, vehicle-state system monitoring is realized under condition.
Descriptions above can combine enforcement individually or in every way, and these variant all exist
Within protection domain of the present utility model.
It should be noted that in this article, term " includes ", " comprising " or its any other variant are intended to non-row
Comprising of his property, so that include that the article of a series of key element or equipment not only include those key elements, but also include not
There are other key elements being expressly recited, or also include the key element intrinsic for this article or equipment.There is no more limit
In the case of system, statement " including ... " key element limited, it is not excluded that in the article including described key element or equipment
There is also other identical element.
Above example is only in order to illustrate the technical solution of the utility model and unrestricted, reference only to preferred embodiment pair
This utility model has been described in detail.It will be understood by those within the art that, can be to technology of the present utility model
Scheme is modified or equivalent, without deviating from the spirit and scope of technical solutions of the utility model, all should contain at this
In the middle of the right of utility model.
Claims (11)
1. an axletree TRT, it is characterised in that include magnetic conduction fluted disc and generator unit；
Described magnetic conduction fluted disc has at least one and protrudes teeth portion or multiple protrusion teeth portion of uniform intervals setting；Described magnetic conduction fluted disc
It is fixed on axletree；
Described generator unit includes housing, and the electromagnetic induction coil that is fixed in housing and be respectively arranged at described electromagnetism
The N pole permanent magnet of induction coil both sides and S pole permanent magnet；Described generator unit is arranged at the outside away from described magnetic conduction fluted disc and makes a reservation for
The position of distance.
2. axletree TRT as claimed in claim 1, it is characterised in that
Described generator unit also includes the rectifying voltage regulator being connected with the described electromagnetic induction coil signal of telecommunication, or, also include
The battery energy storage unit being connected with the described rectifying voltage regulator signal of telecommunication.
3. axletree TRT as claimed in claim 1 or 2, it is characterised in that the width of described protrusion teeth portion be first away from
From with the difference of tolerable error distance to the first distance and tolerable error distance sum in the range of value, or be second distance and
The difference of tolerable error distance is the value in the range of sum to second distance and tolerable error, or is the 3rd distance and tolerance
The difference of error distance is to the value in the range of the 3rd distance and tolerable error distance sum；
Described first distance on the permanent magnet of described N pole away from described electromagnetic induction coil apart from farthest side to described electromagnetism sense
Answer on coil away from the described N pole permanent magnet distance apart from farthest side；
Described second distance is away from the extremely described electromagnetism sense apart from farthest side of described electromagnetic induction coil on the permanent magnet of described S pole
Answer on coil away from the described S pole permanent magnet distance apart from farthest side；
Described 3rd distance is described N pole permanent magnet, the width of the width of described S pole permanent magnet and described electromagnetic induction coil it
With.
4. axletree TRT as claimed in claim 1 or 2, it is characterised in that
The outermost of the protrusion teeth portion of described magnetic conduction fluted disc is arcuate structure, magnetic conduction described in distance on the housing of described generator unit
The nearest side of fluted disc is arcuate structure, and the arcuate structure of the arcuate structure of described protrusion teeth portion and described generator unit is put down
OK.
5. axletree TRT as claimed in claim 1 or 2, it is characterised in that
A part for the axle end that described magnetic conduction fluted disc is integrally formed.
6. axletree TRT as claimed in claim 1 or 2, it is characterised in that including:
The material of described magnetic conduction fluted disc is permeability magnetic material.
7. axletree TRT as claimed in claim 3, it is characterised in that
Described tolerable error distance is 0.1 centimetre～0.5 centimetre.
8. a self-powered sensor, it is characterised in that including: car described in any claim in described claim 2 to 6
Axle TRT, also includes physical sensor part and the signal acquisition circuit being connected with the physical sensor part signal of telecommunication；Wherein,
Described signal acquisition circuit is connected with described rectifying voltage regulator and the described battery energy storage unit signal of telecommunication.
9. self-powered sensor as claimed in claim 8, it is characterised in that including:
Described physical sensor part is temperature-sensing element (device)；
Or, described physical sensor part is Hall effect semiconductor device；
Or, described physical sensor part is vibration induction device；
Or, described physical sensor part is sound sensing device.
10. a car status information monitoring system, it is characterised in that described system includes in described claim 8 to 9 arbitrary
Self-powered sensor described in claim, also includes the wireless signal transmission module electrically connected with described signal acquisition circuit.
11. car status information monitoring systems as claimed in claim 10, it is characterised in that described system also includes: with institute
State the wire circuit interface that signal acquisition circuit, described battery energy storage unit and described rectifying voltage regulator all electrically connect.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620536036.6U CN205811828U (en) | 2016-06-06 | 2016-06-06 | Axletree TRT, self-powered sensor and car status information supervising device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620536036.6U CN205811828U (en) | 2016-06-06 | 2016-06-06 | Axletree TRT, self-powered sensor and car status information supervising device |
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| CN205811828U true CN205811828U (en) | 2016-12-14 |
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| CN201620536036.6U Active CN205811828U (en) | 2016-06-06 | 2016-06-06 | Axletree TRT, self-powered sensor and car status information supervising device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026595A (en) * | 2016-06-06 | 2016-10-12 | 世纪中桥实业发展有限公司 | Axle power generation device, self-powered sensor and vehicle state information monitoring device |
-
2016
- 2016-06-06 CN CN201620536036.6U patent/CN205811828U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106026595A (en) * | 2016-06-06 | 2016-10-12 | 世纪中桥实业发展有限公司 | Axle power generation device, self-powered sensor and vehicle state information monitoring device |
| CN106026595B (en) * | 2016-06-06 | 2019-03-15 | 世纪中桥实业发展有限公司 | Axle power generator, self-powered sensor and car status information monitoring device |
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