CN209591067U - A kind of risk anticipation of shared bicycle and testing system of safety performance - Google Patents
A kind of risk anticipation of shared bicycle and testing system of safety performance Download PDFInfo
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- CN209591067U CN209591067U CN201920276375.9U CN201920276375U CN209591067U CN 209591067 U CN209591067 U CN 209591067U CN 201920276375 U CN201920276375 U CN 201920276375U CN 209591067 U CN209591067 U CN 209591067U
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Abstract
The utility model discloses a kind of anticipation of the risk of shared bicycle and testing system of safety performance, comprising: LoRa node, the cloud server for having LoRa receiving module；The LoRa node is set on shared bicycle car body；The cloud server for having LoRa receiving module is arranged at predeterminable area center；The predeterminable area is the use scope of the shared bicycle；The LoRa node is communicated by the LoRa receiving module with the cloud server, realizes data transmission.The system is based on LoRa Radio Transmission Technology, makes full use of the feature that LoRa technology is remote, inexpensive, accomplishes to acquire in a wide range of interior data to randomly distributed point, is transmitting above no time lag, greatly improving work efficiency.Using sensor array, the parameters of the shared bicycle of the detection of various dimensions, to there are the components of potential security risk to carry out accurate monitoring in real time, to ensure the comprehensive reliable of data.
Description
Technical field
The utility model relates to bicycle system accessories technical field, in particular to the anticipation of the risk of a kind of shared bicycle with
Testing system of safety performance.
Background technique
Shared bicycle is a kind of trip tool now very prevailing, solves in urban transporting system " last one kilometer "
The problem of, with lower charging standard, easy application method, with stop with quick mode and the extensive bicycle of quantity be
Basis, audient is extensive, each big city throughout the country.And LoRa Radio Transmission Technology be push Internet of Things in recent years it is universal,
Promote the important technology of people's quality of life.
But now shared bicycle there is a problem in that:
1, the existing monitoring system of bicycle is shared using APP monitoring or the monitoring of bicycle GPS chip, and there are time lags in transmission
Property, since supervision interval is longer, the data of upload and the error of practical vehicle condition are larger, do not utilize the accurate monitoring realized to bicycle
And on-call maintenance, when data do not conform to the actual conditions, the work difficulty of maintenance personal and the potential degree of hazard of user all will be big
It is big to improve.
2, the monitoring range that the technology of existing monitoring bicycle is covered is smaller, limited to the acquisition type of physical quantity, does not have
Real-time monitoring is carried out for the important physicals amount such as tire pressure and speed, increase the application risk of user, and due to repairing not in time
The irreversible damage of vehicle appearance is set to will lead to maintenance cost higher.
3, the data transmission range of existing monitoring technology is limited, increases the difficulty of data centralized management；Data transmission
Unit cost is higher, it is difficult to accomplish to cover all around.
Utility model content
The purpose of this utility model is that guaranteeing each shared bicycle to all shared accurate Macro or mass analysis of bicycle performance
Data by company's real-time monitoring and can manage concentratedly, reduce user using the risk of shared bicycle, it is full to also improve user
Meaning degree and company's public praise, while maintenance cost can be reduced.
In order to solve the above-mentioned technical problem, the utility model embodiment provides the risk anticipation and peace of a kind of shared bicycle
Full performance detecting system, comprising:
LoRa node, cloud server；
The LoRa node is set on shared bicycle car body；The cloud server working position is to receive on LoRa node
Pass data and storing data
The LoRa node includes: sequentially connected sensor array, bicycle from provided with processor and LoRa transmission module；
The related data of acquisition is transferred to node and carries out unifying arrangement and summarize from provided with processor by the sensor array
And adjudicate and assign instruction, judgement is sent to by related data packets described in the cloud server by the LoRa transmission module
It includes: seat deflection angle, chain wear degree, tire pressure, real-time speed and hand pressure；
The related data is compared by the bicycle from provided with processor with the corresponding threshold data prestored, when super
When crossing the corresponding threshold data, adjudicating the corresponding bicycle of the related data is problem bicycle；And by the related data
And court verdict uploads to the cloud server.
Further, the sensor array includes: first pressure sensor, the first Hall sensor and described first
Hall sensor adaptation the first magnet, MPU6050 sensor, second pressure sensor and the second Hall sensor and with
Second magnet of the second Hall sensor adaptation.
Further, the first pressure sensor is placed at brake handle, for testing the stress at brake handle；
First Hall sensor is arranged on the front fork and/or rear fork of bicycle, and first magnet is arranged in vehicle
The position opposite with first Hall sensor on wheel spoke, for obtaining wheel velocity.
Further, the MPU6050 sensor is set to shared bicycle seat bottom, for detecting seat deflection angle
Degree.
Further, the second pressure sensor is diaphragm pressure sensor, and the diaphragm pressure sensor is placed in
Between shared bicycle wheel hub and tire, for obtaining tire pressure.
Further, second Hall sensor is set on the crossbeam of chain fluted disc side, the two magnet setting
The position opposite with second Hall sensor on chain fluted disc, for obtaining chain total distance.
Further, the bicycle is the MCU of integrated STM32F103ZET6 chip from provided with processor.
Further, the LoRa node further include: the Intelligent Notification module being connect with the bicycle from provided with processor；
The Intelligent Notification module be display screen, the bicycle from provided with processor by instruction issuing to the display screen into
Row display.
Utility model has the advantages that
1, it is based on LoRa Radio Transmission Technology, the feature that LoRa technology is remote, inexpensive is made full use of, accomplishes in big model
It encloses the interior data to randomly distributed point to acquire, is transmitting upper no time lag, greatly improving work efficiency.
2, using sensor array, the parameters of the shared bicycle of the detection of various dimensions, to there are potential security risks
Component carries out accurate monitoring in real time, to ensure the comprehensive reliable of data.
3, in such a way that monitoring result is uploaded to cloud server, shared bicycle company can understand each shared immediately
The supplemental characteristic of bicycle stops the service business of problem bicycle in time and arranges personnel's on-call maintenance, prevents user ignorant
In the case where using problem bicycle to causing loss of personal property.
Other features and advantages of the utility model will illustrate in the following description, also, partly from specification
In become apparent, or understood and implementing the utility model.The purpose of this utility model and other advantages can pass through
Structure specifically indicated in the written description, claims, and drawings is achieved and obtained.
Below by drawings and examples, the technical solution of the utility model is described in further detail.
Detailed description of the invention
Attached drawing is used to provide a further understanding of the present invention, and constitutes part of specification, practical with this
Novel embodiment is used to explain the utility model together, does not constitute limitations of the present invention.In the accompanying drawings:
Fig. 1 is the structure chart of the risk anticipation and testing system of safety performance of shared bicycle provided by the utility model；
Fig. 2 provides the logical flow chart of system for the utility model；
Fig. 3 provides the data transmission structure schematic diagram of system for the utility model；
Fig. 4 is shared bicycle security performance detection position schematic diagram provided by the utility model；
Fig. 5 is the location drawing of first pressure sensor provided by the utility model, the first Hall sensor and the first magnet；
Fig. 6 is the schematic view of the mounting position of MPU6050 sensor provided by the utility model；
Fig. 7 A is second pressure sensor mounting location figure provided by the utility model；
Fig. 7 B is diaphragm pressure sensor installation site figure provided by the utility model；
Fig. 8 is the second Hall sensor provided by the utility model and the second magnet schematic view of the mounting position；
Fig. 9 flow chart that data are transmitted between LoRa node provided by the utility model and LoRa gateway；
Figure 10 is the schematic diagram that data preprocessing module data provided by the utility model are transmitted and handled；
Figure 11 is MCU installation site figure provided by the utility model；
Figure 12 is the schematic diagram that cloud server provided by the utility model transmits data.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
The risk that the utility model embodiment provides a kind of shared bicycle prejudges and testing system of safety performance, reference
Shown in Fig. 1, comprising:
LoRa node, cloud server；
Wherein: the LoRa node is arranged on shared bicycle car body；
LoRa node is communicated by LoRa transmission module with cloud server, realizes data transmission；
As shown in Figure 1, above-mentioned LoRa node includes: sequentially connected sensor array, node from provided with processor and LoRa
Transmission module；Above-mentioned cloud server includes: to receive LoRa data module；
In the present embodiment, the related data of acquisition is transferred to node from provided with processor by sensor array；The included place of node
The related data is carried out unified arrangement and summarized by reason device, wireless by LoRa transmission module and the reception LoRa data module
Communication, is sent to cloud server for related data；Above-mentioned related data includes: seat deflection angle, chain wear degree,
Tire pressure, real-time speed and hand pressure etc.；
In LoRa node, it is provided with data decision function, by above-mentioned related data and the corresponding threshold data that prestores
It is compared, when being more than corresponding threshold data, then adjudicating the bicycle is problem bicycle；And court verdict is uploaded into cloud
Server.Such as: when loosening, which occurs, in revolution angle of chair is more than maximum value, then it is assumed that the bicycle is faulty, and by the questionnaire
Vehicle and relevant parameter are uploaded onto the server.Server is according to the information of acquisition, related data in more new database.Above-mentioned flow chart
It can refer to shown in Fig. 2.
In the present embodiment, by using the seat that sensor array perceives shared bicycle loosen situation, brake quality condition,
Tire pressure condition and chain wear situation, then data are arranged and summarized from provided with processor is unified by node, pass through LoRa
Court verdict is uploaded to cloud server by transmission technology, the status information of each shared bicycle in immediate updating server.
Referring to shown in Fig. 3, which is based on LoRa Radio Transmission Technology, makes full use of LoRa technology remote, inexpensive
The characteristics of, accomplish to acquire in a wide range of interior data to randomly distributed point.Using sensor array, problem bicycle is understood in time
Prevent user without knowing it using problem bicycle to cause loss of personal property.
Further, referring to shown in Fig. 4, for the detection position schematic diagram for sharing bicycle, sensor array is exactly to obtain
Take the detection data at above-mentioned position.The sensor array include: first pressure sensor, the first Hall sensor, with it is described
The first magnet, MPU6050 sensor, second pressure sensor and the second Hall sensor of first Hall sensor adaptation
With the second magnet being adapted to the second Hall sensor.
It in one embodiment, referring to Figure 5, is first pressure sensor, the first Hall sensor and described first
The problem of installation site of first magnet of Hall sensor adaptation, quality of braking for detecting.
For brake principle, first pressure sensor is placed at brake handle to the stress tested at brake handle,
The first Hall sensor is placed in tire nearby to test bicycle speed simultaneously, for example the setting of the first Hall sensor is existed
On the front fork of bicycle, it can also can also be installed simultaneously on rear fork；First magnet is arranged on vehicle wheel spoke with first suddenly
The opposite position of your sensor, for obtaining wheel velocity.Hall sensor detects the revolving speed of the front wheels and rear wheels of bicycle.
Detection at this is completed jointly by first pressure sensor (diaphragm pressure sensor) and the first Hall sensor,
Its circular is as follows:
In formula: v --- the revolving speed of tire；
π --- pi；
D --- tire circumference；
Δ t --- Hall sensor sets the time difference of high level twice；
It can obtain:
With V in formulanAnd Vn+1Form occurs, and respectively indicates the adjacent speed one in front and one in back measured twice
Wherein for the degree of brake handle pressing, the utility model, which is used, is placed in brake for first pressure sensor
On handlebar, set-down location is located at the position of hand pressing brake handle, and when user draws brake handle, power all be will bear directly against
First pressure sensor (diaphragm pressure sensor).It factually tests and obtains, if braking quality is good, act on the power of brake handle
F and bicycle acceleration a will keep specific mapping, and different bicycles, corresponding relationship will be different, at this by each producer
Voluntarily measure.When being detected, if a and F of test meet the mapping of producer's setting:
Then judge that shared bicycle braking quality is errorless, the shared bicycle braking quality of on the contrary then judgement is improper.
Following experimental data is the pressure and (this test of corresponding bicycle speed at the handle tested in certain experiment
Brake be qualified): 1 brake handle pressure of table and bicycle speed experimental record:
In one embodiment, referring to shown in Fig. 6, the installation site of MPU6050 sensor is located at seat bottom, for examining
Survey the loosening situation of seat.
| VDD supply voltage | 2.5V ± 5%, 3.0V ± 5%, 3.3V ± 5% |
| VDDIO | 1.8V ± 5% |
| Gyroscope operating current | 5mA |
| Gyroscope is awaited orders electric current | 5µ；A |
| Accelerator operating current | 350µ；A |
| Accelerator battery saving mode electric current | 20µ；A@10Hz |
Table 2MPU6050 parameter list；
θ, ψ are respectively the rotation angle around X, Y, Z, and α is the angle rotated around rotary shaft,
Quaternary counts to the conversion of Eulerian angles:
Such as specifically detecting the experimental data that seat loosens situation:
Following table is the experimental data that PU6050 sensor uploads, which loosens situation, test knot for testing seat
Fruit is as shown in table 3:
3 seat deflection angle experimental record of table:
MPU6050 sensor is placed in seat bottom, is considered as normally if small-scale deflection occurs for seat, only sends out
It is considered as shared bicycle when raw significantly inclination to go wrong, at this time feeds back problem, application maintenance.In reality, general seat
Chair loosening be due to long-time use and stress, caused by the correlated parts of bicycle seat loosen naturally, in this experiment, than
Such as by taking roll angle α numerical value as an example, when it is greater than 4, then it is assumed that seat loosens.
In one embodiment, referring to shown in Fig. 7 A-7B, it is the schematic view of the mounting position of second pressure sensor, is used for
Detect tire pressure；
In the immediately monitoring to shared bicycle tire pressure, the utility model comes using diaphragm pressure sensor to tire pressure
It is perceived, then by the data of perception, by digital analog converter, (digital analog converter is the analog quantity for uploading sensor
It is converted into the digital quantity that MCU can be identified, is largely that MCU on the market integrates the module) it is included using bicycle
Processor processing obtains corresponding tire pressure value.
As shown in Figure 7 B, wherein the utility model using diaphragm pressure sensor is placed between wheel hub and tire,
The position of middle placement and the data of measurement, which have, directly to be contacted, wherein sensor placement location it is general there are two types of, be Fig. 7 B respectively
In 1. and 2. locate；Wherein diaphragm pressure sensor is placed on when 1. locating, and is much larger than in normal tire pressure sensor pressure
Tire pressure is lower than pressure when normal value, and is placed on when 2. locating then because when tire can be more normal than tire pressure when tire pressure is low more
Close to wheel hub bottom, therefore the pressure when normal tire pressure sensor pressure is lower than normal value much smaller than tire pressure,
But it places 1. pressure and changes in the case where changing identical tire pressure condition more obvious, thus 1. the utility model selection is placed in
Place.
In the present embodiment, the method for used detection tire pressure condition is placed in wheel due to placing diaphragm pressure sensor
The position of tire is different, and measurement result and the setting insufficient threshold value of tire pressure are all different, regards concrete condition for different bicycle models
Depending on, position and specific tire pressure test result of this test in view of placement, for example it is 5.20N that threshold value, which can be set, that is, works as numerical value
Judgement is that tire pressure is too low when lower than 5.20N.Experimental results are following, and (this test is to be down to tire pressure to be far below
Then normal value is inflated to normal value, beating " X " is the test result lower than threshold value):
4 tire pressure test experiments data of table
In one embodiment, referring to shown in Fig. 8, being the second Hall sensor and the second magnet schematic view of the mounting position,
The problem of for detecting chain wear.In the present embodiment, with the number of turnover of the second Hall sensor measurement chain, according to it
Length gauge calculates the total distance that chain-driving vehicle is advanced, wherein the second magnet is placed at fluted disc, by the second hall sensing
Device is placed in beside fluted disc and can detect on the crossbeam of the second magnet, placement location such as Fig. 8, wherein operational formula are as follows:
S=kC1 (3)
The total distance that S in formula --- chain uses；
K --- Hall sensor sets the number of high level；
C1--- the length of chain；
Since chain rotation total kilometrage is unrelated with speed, so result is simple linear function: when total distance reaches one
When fixed number value, it is believed that it is larger that the chain is broken possibility after considerable degree of tangible physical abrasion, feedback data notice
The replacement of maintenance personal's progress chain.
In the present embodiment, the characteristic of LoRa distance data transmission is utilized, accomplishes that detecting shared bicycle real time data exists
Wireless transmission in city scope, specific connection method is as shown in Figure 1, and specific implementation step is as shown in Figure 9.
In the specific implementation, above-mentioned bicycle can be the MCU of integrated STM32F103ZET6 chip from provided with processor, join
According to shown in Figure 10, power supply energizes MCU using 5V rechargeable lithium battery, and each sensor is directly energized by MCU.Wherein, join
According to shown in Figure 11, MCU is mountable to below bicycle seat.
Wherein each pin of STM32F103ZET6 and each sensor and LoRa transmission module connection relationship are as follows:
LoRa transmission module: TXD--PC10；
RXD--PC11；
First Hall sensor: DO--PG15；
First pressure sensor: AO--PF10；
Second Hall sensor: DO--PG8；
MPU6050:SCL--PB6；
SDA--PB7；
INT--PA11；
Bluetooth module: RXD--PA2；
TXD--PA3；
KEY--PB14；
INT--PB13；
Attached: the bluetooth that the second pressure sensor that bluetooth module herein was used for and measured tire pressure integrates is attached,
And then by the small-sized MCU connection of integrated bluetooth module at second pressure sensor.
In the present embodiment, cloud server primarily serves two effects, be respectively receive LoRa node upload data and
Database is modified, detailed Figure 12, in the building of database, database is divided into server end and client, wherein server
End and client are all mounted in cloud server, and the database that specific the utility model uses can be MySQL database
System.
Possess the database for having each shared bicycle and its each unit status, the database in server beyond the clouds
Meeting real-time update, the data that the data of the update are uploaded from LoRa node.It, will when having shared bicycle abnormal state
It is notified that maintenance personal, and informs and be likely to occur location of fault, go to repair before reminding maintenance personal.
The risk of shared bicycle provided by the utility model prejudges and testing system of safety performance, transmits skill based on LoRa
Art makes full use of the feature that LoRa technology is remote, inexpensive, accomplishes to acquire in a wide range of interior data to randomly distributed point,
It creatively realizes and performance detection and data transmission is carried out to the shared bicycle in a city, improve working efficiency.Together
When to shared bicycle vehicle condition detection in, each Physical Quantity Field is different in the information of each azimuthal point, single-sensor detection data
Often there is limitation, Ying Caiyong sensor array detects the performance parameter at each position of shared bicycle simultaneously.
The data for reflecting shared bicycle performance are uploaded to cloud by LoRa transmission module by sensor array detection node
Server, company can monitor the real-time parameter of the shared bicycle of random distribution in city from cloud server end；And work as
When significantly alterring or being more than impaired threshold value occur in performance parameter, cloud server is to company feedback and transmission warning downwards refers to
It enables, shares bicycle at this time and stop service after the preceding paragraph is ridden, i.e., user is not available the problem bicycle, prevents next section
It rides and accident occurs.Shared bicycle company goes to repair before can sending maintenance personal in time by the data of feedback simultaneously, from complete
Portion maintenance personal collects all vehicles in city and carries out unified overhaul to for problem, the accurate maintenance solved the problems, such as.This is practical
The risk of the shared bicycle of novel offer prejudges and testing system of safety performance, using overcoming data to transmit in a certain range
Limitation, user different from the past are carried out the mode of artificial feedback vehicle condition using APP, at low cost, effectively promote data age
Property and accuracy, reduce user's potential danger, simultaneously because vehicle condition can promptly and accurately feed back maintenance personal, everyone is overlayable
It safeguards that area expands, can effectively cut down number of work, reduce maintenance cost.
It should be noted last that above embodiments are merely intended for describing the technical solutions of the present application, but not for limiting the present application.To the greatest extent
Pipe is described in detail the utility model referring to embodiment, those skilled in the art should understand that, it is practical to this
Novel technical solution is modified or replaced equivalently, without departing from the spirit and scope of the technical scheme of the present invention,
It should all cover in the scope of the claims of the utility model.
Claims (8)
1. a kind of risk of shared bicycle prejudges and testing system of safety performance characterized by comprising
LoRa node, the cloud server for having LoRa receiving module；
The LoRa node is set on shared bicycle car body；The cloud server working position is to receive LoRa node to upload number
According to simultaneously storing data
The LoRa node includes: sequentially connected sensor array, bicycle from provided with processor and LoRa transmission module；
The related data of acquisition is transferred to node and carries out unifying arrangement and summarize from provided with processor by the sensor array, is passed through
The related data is sent to related data described in the cloud server by the LoRa transmission module: seat deflection angle
Degree, chain wear degree, tire pressure, real-time speed and hand pressure；
The related data is compared by the bicycle from provided with processor with the corresponding threshold data prestored, when more than institute
When stating corresponding threshold data, adjudicating the corresponding bicycle of the related data is problem bicycle；And by the related data and sentence
Certainly result uploads to the cloud server.
2. risk anticipation and the testing system of safety performance of a kind of shared bicycle as described in claim 1, which is characterized in that
The sensor array include: first pressure sensor, the first Hall sensor, be adapted to first Hall sensor
It one magnet, MPU6050 sensor, second pressure sensor and the second Hall sensor and is adapted to the second Hall sensor
The second magnet.
3. risk anticipation and the testing system of safety performance of a kind of shared bicycle as claimed in claim 2, which is characterized in that
The first pressure sensor is placed at brake handle, for testing the stress at brake handle；
First Hall sensor is arranged on the front fork and/or rear fork of bicycle, and first magnet is arranged in wheel spoke
The position opposite with first Hall sensor on item, for obtaining wheel velocity.
4. risk anticipation and the testing system of safety performance of a kind of shared bicycle as claimed in claim 2, which is characterized in that
The MPU6050 sensor is set to shared bicycle seat bottom, for detecting seat deflection angle.
5. risk anticipation and the testing system of safety performance of a kind of shared bicycle as claimed in claim 2, which is characterized in that
The second pressure sensor is diaphragm pressure sensor, and the diaphragm pressure sensor is placed in shared bicycle wheel hub and tire
Between, for obtaining tire pressure.
6. risk anticipation and the testing system of safety performance of a kind of shared bicycle as claimed in claim 2, which is characterized in that
Second Hall sensor is set on the crossbeam of chain fluted disc side, two magnet be arranged on chain fluted disc with it is described
The opposite position of second Hall sensor, for obtaining chain total distance.
7. a kind of risk of shared bicycle as claimed in any one of claims 1 to 6 prejudges and testing system of safety performance,
It is characterized in that, the bicycle is the MCU of integrated STM32F103ZET6 chip from provided with processor.
8. a kind of risk of shared bicycle as claimed in any one of claims 1 to 6 prejudges and testing system of safety performance,
It is characterized in that, the LoRa node further include: the Intelligent Notification module being connect with the bicycle from provided with processor；
The Intelligent Notification module is display screen, and the bicycle shows instruction issuing to the display screen from provided with processor
Show.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920276375.9U CN209591067U (en) | 2019-09-03 | 2019-09-03 | A kind of risk anticipation of shared bicycle and testing system of safety performance |
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| CN201920276375.9U CN209591067U (en) | 2019-09-03 | 2019-09-03 | A kind of risk anticipation of shared bicycle and testing system of safety performance |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113052888A (en) * | 2020-11-03 | 2021-06-29 | 无锡臻永科技有限公司 | Abnormal environment real-time monitoring system |
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2019
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113052888A (en) * | 2020-11-03 | 2021-06-29 | 无锡臻永科技有限公司 | Abnormal environment real-time monitoring system |
| CN113052888B (en) * | 2020-11-03 | 2021-12-17 | 杭州尽享科技有限公司 | Abnormal environment real-time monitoring system |
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