CN113960329B - Indication device and indication method for riding comfort - Google Patents
Indication device and indication method for riding comfort Download PDFInfo
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- CN113960329B CN113960329B CN202111159473.2A CN202111159473A CN113960329B CN 113960329 B CN113960329 B CN 113960329B CN 202111159473 A CN202111159473 A CN 202111159473A CN 113960329 B CN113960329 B CN 113960329B
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- 238000000034 method Methods 0.000 title claims abstract description 36
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- 238000012216 screening Methods 0.000 claims description 8
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Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60Q—ARRANGEMENT OF SIGNALLING OR LIGHTING DEVICES, THE MOUNTING OR SUPPORTING THEREOF OR CIRCUITS THEREFOR, FOR VEHICLES IN GENERAL
- B60Q9/00—Arrangement or adaptation of signal devices not provided for in one of main groups B60Q1/00 - B60Q7/00, e.g. haptic signalling
Abstract
The invention discloses an indicating device and an indicating method for riding comfort. The indicating device comprises a base for being placed on a horizontal plane of a vehicle; the first end of the elastic support piece is fixed on the top surface of the base, and the second end of the elastic support piece can elastically swing relative to the first end of the elastic support piece; the support part is arranged at the second end of the elastic support piece; and the sensor measurement module is arranged on one side, far away from the base, of the supporting part and is used for calculating and displaying the comfort index. The invention can simulate the same forward tilting and backward tilting trend as passengers, thereby effectively indicating the riding comfort of the running vehicle at present, further promoting the driver to generate willingness to adjust driving operation so as to improve the operability of the vehicle, further leading the vehicle to run more stably, forming closed loop feedback adjustment of the riding comfort, being capable of warning the driver on one hand and being used as one of evaluation reference indexes of driving technology and safety service consciousness on the other hand.
Description
Technical Field
The invention relates to a riding comfort level indicating device and a corresponding riding comfort level indicating method, and belongs to the technical field of vehicle driving.
Background
During the running process of the vehicle, because the driver has absolute control over the vehicle, high concentration and the operation of acceleration and braking is based on comprehensive pre-judgment on the conditions of the surrounding environment in front, the driver is ready in advance from body and mind, and further the driver does not have obvious feeling of 'jerking back' and 'sudden forward leaning' during acceleration and braking. However, for passengers riding in a vehicle, particularly for passengers sitting in the rear row, the feeling of pushing back and leaning forward during acceleration and braking may be noticeable. Particularly, the feeling of "jerking the back" and "jerking forward" can cause passengers to worry about vehicle safety, greatly affecting ride comfort.
For infants and small numbers of teenagers in a vehicle, the vestibular function may be imperfect due to the fact that the nervous system is still not sound. When riding, the head position of the baby is changed continuously due to the fact that the direction is changed continuously in the advancing process, and the body is accelerated and decelerated to perform linear speed change or rotary motion, so that vestibular organs of the baby are stimulated strongly, if the overstimulation is too strong and exceeds the tolerance limit of the vestibular organs, posture regulation disorder and vegetative nerve functional disturbance are caused, and reactions such as dizziness, nausea and vomiting can occur.
Therefore, a device capable of indicating the riding comfort of a running vehicle is needed to remind the driver of the current passenger feeling, thereby indirectly influencing the driving operation of the driver and forming a closed-loop feedback adjustment of the riding comfort.
Disclosure of Invention
The invention aims to provide an indication device for riding comfort so as to improve the riding comfort of passengers.
Another technical problem to be solved by the present invention is to provide a method for indicating riding comfort.
In order to achieve the technical purpose, the invention adopts the following technical scheme:
according to a first aspect of an embodiment of the present invention, there is provided an indicating device for riding comfort, including:
a base for placement on a vehicle horizontal surface;
the first end of the elastic support piece is fixed on the top surface of the base, and the second end of the elastic support piece can elastically swing relative to the first end of the elastic support piece;
a support portion mounted at a second end of the elastic support;
and the sensor measurement module is arranged on one side, far away from the base, of the supporting part and is used for calculating and displaying the comfort index.
The sensor measurement module comprises a power supply module, a triaxial acceleration module, a singlechip and an indication execution module, wherein the triaxial acceleration module, the singlechip and the indication execution module are electrically connected with the power supply module;
the triaxial acceleration module is electrically connected with the singlechip and is used for detecting instantaneous acceleration values of the vehicle in three directions at the current moment and feeding back the instantaneous acceleration values to the singlechip; wherein, the running direction of the vehicle is defined as a Y-axis direction, the direction perpendicular to the Y-axis direction in the horizontal plane is defined as an X-axis direction, and the direction perpendicular to the Y-axis direction in the vertical plane is defined as a Z-axis direction;
the indication execution module is electrically connected with the singlechip and used for displaying the comfort index;
the singlechip is used for completing the configuration of triaxial acceleration, reading and analyzing data, and driving the indication execution module to display the comfort index.
According to a second aspect of the embodiment of the present invention, there is provided a method for indicating riding comfort, comprising the steps of:
initializing a sensor measurement module and performing data configuration;
judging whether the data in a certain period is updated or not, if so, reading the data, then resolving the Z-axis inclination angle and storing the Z-axis inclination angle into a cache area; if the data is not updated, continuing to update the data until the data is updated; wherein, the running direction of the vehicle is defined as a Y-axis direction, the direction perpendicular to the Y-axis direction in the horizontal plane is defined as an X-axis direction, and the direction perpendicular to the Y-axis direction in the vertical plane is defined as a Z-axis direction;
judging whether the accumulated sampling points reach the set number N, if so, analyzing the Z-axis inclination distribution, and calculating a comfort index; if the number of the accumulated sampling points is not N, continuing to accumulate the sampling until the number of the accumulated sampling points is N;
displaying the comfort index through a sensor measurement module and emptying the cache;
and returning to the data updating judging step, and judging whether the data of the next period is updated or not.
Preferably, if the data is updated, the Z-axis inclination angle is calculated after the data is read and stored in the buffer area, and the method specifically comprises the following sub-steps:
the sensor measurement module reads the updated instantaneous acceleration values of X, Y, Z in three directions, which are A respectively x(n) 、A y(n) 、A z(n) ；
Calculating a Z-axis inclination angle gamma (n) according to a formula and storing the Z-axis inclination angle gamma (n) into a buffer area;
preferably, if the number of accumulated sampling points reaches N, analyzing the Z-axis inclination distribution, and calculating a comfort index, including the following steps:
carrying out distribution estimation on the Z-axis inclination angle;
screening an effective data set for subsequent model parameter training;
giving an optimal parameter estimation value through model parameter training;
and judging and outputting the comfort index according to the parameter estimation value.
Preferably, the estimating the Z-axis inclination angle includes the following steps:
let the update frequency of the data set be f u Then n=1/(f) u *T s )；
Making M-level histogram statistics on the Z-axis inclination angle gamma (N), n=0, and N-1 to obtain a distribution sequence D (i), i=0, and M-1; wherein M is the number of intervals counted by the histogram, and i is the index of the counted intervals.
Preferably, the screening the effective data set for the subsequent model parameter training includes the following steps:
let the effective data set after data screening be S, the elements in the effective data set S consist of non-zero elements of the sequence D (i),
preferably, the method gives the optimal parameter estimation value through model parameter training, and specifically comprises the following sub-steps:
assuming a total of K elements in the active dataset S, where elements are defined as (K, S) k )，k＝0，...，K－1；
At the cost ofTraining the function to obtain a parameter estimation valuec o ，/>Wherein (1)>c is a model parameter, < >>Representing the asperity of the distribution curve and c represents the steady state expectation of dip angle.
Preferably, the judging and outputting the comfort index according to the parameter estimation value specifically includes the following sub-steps:
the comfort indexThe calculation is carried out according to the following formula:
wherein epsilon is a system adjustable parameter, and the larger the epsilon value is, the less sensitive the comfort index calculation is to the distribution estimated value, and otherwise, the more sensitive the comfort index calculation is to the distribution estimated value.
Preferably, the initializing the sensor measurement module and performing data configuration specifically includes the following sub-steps:
initializing buffer zone data and resetting a triaxial acceleration module in the sensor measurement module;
configuring a timer, a watchdog and a timer interrupt response program;
the timing interruption response program comprises the steps of reading three-axis acceleration instantaneous data and updating the three-axis acceleration instantaneous data and the mark.
The indicating device for the riding comfort level can be arranged on a vehicle, and when the vehicle accelerates or suddenly brakes, the sensor measuring module can simulate the forward tilting and backward tilting trend same as that of passengers due to the action of inertia, and the forward tilting and backward tilting trend can be converted into the change of the inclination angle of the sensor measuring module in the preset direction through the action of the elastic supporting piece, so that the riding comfort level of the running vehicle at present can be effectively indicated. Finally, the comfort index is displayed through the sensor measurement module. After the comfort index is displayed, the driver can be reminded of the feeling of the current passengers, and the driver is prompted to generate a wish of adjusting driving operation so as to improve the operability of the vehicle, so that the vehicle can run more stably, a closed loop feedback adjustment of riding comfort is formed, on one hand, the driver can be warned, and on the other hand, the vehicle can also be used as one of evaluation reference indexes of driving technology and safety service consciousness.
Drawings
Fig. 1 is a schematic structural view of an indication device for riding comfort according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a sensor measurement module according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of three-axis acceleration directions of a three-axis acceleration module according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of closed loop feedback adjustment of ride comfort in accordance with an embodiment of the present invention;
FIG. 5 is a flow chart of a method of ride comfort indication according to an embodiment of the present invention;
FIG. 6 is a flowchart of a timer interrupt response procedure according to an embodiment of the present invention;
fig. 7 is a schematic diagram of three-axis acceleration directions after the position of the three-axis acceleration module is changed according to an embodiment of the present invention.
Detailed Description
The technical contents of the present invention will be described in detail with reference to the accompanying drawings and specific examples.
Fig. 1 shows an indication device for riding comfort provided by an embodiment of the present invention. The indicating device at least comprises: a base 1, an elastic support 2, a support 3 and a sensor measurement module 4.
The base 1 serves as a mounting base for other components for placement on a vehicle horizontal surface, for example: the base 1 is fixed in the horizontal plane of the vehicle by means of glue. In the embodiment of the present invention, the base 1 has a disc shape, and in other embodiments, the base may have other shapes, for example: triangle, rectangle, polygon, ellipse, diamond, etc., are not limited herein. Meanwhile, the material of the base 1 can be adaptively selected according to the needs, and is preferably metal, and can be plastic.
The first end of the elastic support 2 is fixed on the top surface of the base 1, and the second end of the elastic support 2 can elastically swing relative to the first end of the elastic support 2. In the embodiment of the present invention, the elastic support 2 is preferably a support spring, but is not limited to a specific type of the elastic support 2, and a first end of the support spring is fixed to the top surface of the base 1 by a fixing screw 11 (the first end of the support spring may also be fixed to the top surface of the base 1 by welding), and a second end of the support spring is a free end, so that the second end of the support spring can elastically swing relative to the first end of the support spring.
The support 3 is mounted at a second end of the elastic support 2 to serve as a mounting base for the sensor measurement module 4. In the embodiment of the present invention, the supporting portion 3 has a disc shape, it is easy to understand that in other embodiments, the supporting portion 3 may have other shapes, for example: the shape of triangle, rectangle, polygon, ellipse, diamond, etc. is not limited herein.
The sensor measuring module 4 is mounted on the side of the support 3 remote from the base 1 for calculating and displaying a comfort index. Specifically, referring to fig. 2, the sensor measurement module 4 includes a power module 41, a triaxial acceleration module 42, a singlechip 43, and an instruction execution module 44; the triaxial acceleration module 42, the singlechip 43 and the instruction execution module 44 are all electrically connected with the power supply module 41, so that other components are powered through the power supply module 41.
Meanwhile, the three-axis acceleration module 42 is electrically connected with the single chip microcomputer 43, so as to be used for detecting instantaneous acceleration values of the vehicle in three directions at the current moment and feeding back the instantaneous acceleration values to the single chip microcomputer 43, in the embodiment of the present invention, the three-axis acceleration module 42 mainly comprises an adaptive circuit and a three-axis accelerometer, wherein, referring to fig. 3, the running direction of the vehicle is defined as a Y-axis direction, the direction perpendicular to the Y-axis direction in a horizontal plane is defined as an X-axis direction, and the direction perpendicular to the Y-axis direction in a vertical plane is defined as a Z-axis direction. The singlechip 43 contains a crystal oscillator and a conventional adapter interface circuit for completing the configuration of triaxial acceleration, reading and analyzing data, and driving the instruction execution module 44 to display the comfort index. The indication execution module 44 is electrically connected with the single chip microcomputer 43, and the indication execution module 44 comprises an audible and visual alarm device and a display module for displaying the comfort index in a mode of warning sound or indication pictures.
Thus, by installing the indicating device on the vehicle, when the vehicle accelerates or suddenly stops, the sensor measuring module 4 simulates the same forward tilting and backward tilting trend as the passengers due to the inertia effect, and the forward tilting and backward tilting trend is converted into the change of the inclination angle of the sensor measuring module 4 in the preset direction through the effect of the supporting spring, so that the riding comfort of the running vehicle can be effectively indicated, and the comfort index can be displayed through the indication executing module 44 in the sensor measuring module 4.
Referring to fig. 4, after the comfort level index is displayed, the driver can be reminded of the current passenger feeling, so that the driver is prompted to generate a wish of adjusting driving operation, and the operability of the vehicle is improved, so that the vehicle can run more stably, and therefore, a closed-loop feedback adjustment of riding comfort level is formed, on one hand, the driver can be warned, and on the other hand, the system can also be used as one of evaluation reference indexes of driving technology and safety service awareness. On the basis of the indication device for riding comfort, the embodiment of the invention further provides an indication method for riding comfort. As shown in fig. 5, the indication method at least includes the following steps:
s1: and initializing a sensor measurement module and performing data configuration.
Specifically, the method comprises the steps S11 to S12:
s11: initializing buffer zone data and resetting the tri-axial acceleration module 42 in the sensor measurement module;
s12: configuring a timer, a watchdog and a timer interrupt response program;
referring to fig. 6, the timer interrupt response procedure includes two steps, the first step is to read the tri-axis acceleration transient data, and the second step is to update the tri-axis acceleration transient data and the flag. The interrupt response program is triggered by timing interrupt, the timing interval is Ts, and the interrupt response program is mainly responsible for driving a specific bus interface to read acceleration values of the triaxial accelerometer in the current three directions, storing the acceleration values in a buffer zone and updating the flag bit of data update so as to help the follow-up judgment of whether the data is updated.
S2: judging whether the data in a certain period is updated or not, if so, reading the data, then resolving the Z-axis inclination angle and storing the Z-axis inclination angle into a cache area; if the data is not updated, continuing the data updating judgment until the data is updated.
Specifically, after initialization, watchdog configuration, timer configuration and timer interrupt configuration are completed, it is necessary to determine whether the interrupt response program updates the triaxial acceleration, and if the data is updated, the updated data may be used to perform a Z-axis tilt angle calculation (specific calculation procedure is described in detail below); if the data is not updated, the data is continuously monitored until the data is updated.
In this step, since the timing interval of the interrupt response program is Ts, under normal conditions, the calculation of the Z-axis inclination angle can be performed once every Ts, and the Z-axis inclination angle is sampled once every calculation, and after the number of accumulated sampling points reaches N, the comfort index can be calculated, where the number N can be determined according to actual needs, and in the embodiment of the present invention, N is preferably 1000.
Next, the process of calculating the Z-axis inclination angle γ (n) will be described in detail:
referring to fig. 7, assuming that the current three-axis acceleration module 42 is located at a position shown by a dashed box cube in fig. 7, the three-axis acceleration module 42 reads X, Y, Z updated instantaneous acceleration values of Ax (n), ay (n), and Az (n), respectively, and at this time, the three axes X, Y, Z generate angles α (n), β (n), and γ (n) with respect to the reference position (i.e., the position shown in fig. 3).
Then, the Z-axis inclination angle gamma (n) is calculated according to a formula and stored in a buffer area,
s3: judging whether the accumulated sampling points reach the set number N, if so, analyzing the Z-axis inclination distribution, and calculating a comfort index; if the number of the accumulated sampling points is not N, the accumulated sampling is continued until the number of the accumulated sampling points is N.
Specifically, the method comprises the steps S31 to S34:
s31: and carrying out distribution estimation on the Z-axis inclination angle.
Specifically, the method comprises the steps S311 to S312:
s311: let the update frequency of the data set be f u Then n=1/(f) u *T s )。
In a preferred embodiment of the invention, f u At 0.2hz, n=1000, ts=1/200. Of course, in other embodiments, f u Other values are possible, such as 0.3Hz or 0.15Hz, etc., and N is also possible, such as 800 or 1200, etc.
S312: making M-level histogram statistics on the Z-axis inclination angle gamma (N), n=0, and N-1 to obtain a distribution sequence D (i), i=0, and M-1; wherein M is the number of intervals counted by the histogram, and i is the index of the counted intervals.
S32: and screening out the effective data set for subsequent model parameter training.
Specifically, let the effective data set after data screening be S, the elements in the effective data set S consist of non-zero elements of the sequence D (i),
s33: and (5) giving an optimal parameter estimation value through model parameter training.
Specifically, the method comprises steps S331 to S332:
s331: assuming a total of K elements in the active dataset S, where elements are defined as (K, S) k )，k＝0，...，K－1；
S332: training to obtain parameter estimation values according to the cost functionc o ，/>Wherein (1)>c is a model parameter, < >>Representing the asperity of the distribution curve and c represents the steady state expectation of dip angle.
S34: and judging and outputting the comfort index according to the parameter estimation value.
In particular, comfort indexThe calculation is carried out according to the following formula:
wherein epsilon is a system adjustable parameter, and the larger the epsilon value is, the less sensitive the comfort index calculation is to the distribution estimated value, otherwise, the more sensitive the distribution estimated value is. When the dip angle estimation convexity is not obvious andwhen small, the magnitude of C is mainly considered.
The comfort indexHas the following properties:
1. the value range is between [0,1 ].
2. The smaller the value of the comfort index, the more stable the driving; the greater the value of the comfort index, the less stable the ride (i.e., a feeling of pushing back or a pronounced forward lean).
S4: displaying the comfort index through the sensor measurement module 4 and emptying the buffer memory;
in particular, when the comfort index isAfter the calculation is completed, the instruction execution module 44 is controlled by the singlechip 43 to display the comfort index +.>The indication execution module 44 may display an indication or warning including light or sound, and in an embodiment of the present invention, referring to fig. 5, the indication execution module 44 may be different expressions (e.g. according to smiling face, no expression, worry about pain, and gradually decreasing comfort), or may be a color mark (e.g. from green, yellow to red, and gradually decreasing comfort). It is easy to understand that the display of comfort index by expression and color in the embodiment of the present invention is only a simple two-way implementation, and in other embodiments, various forms of display may be formed as required.
S5: and returning to the data updating judging step, and judging whether the data of the next period is updated or not.
Specifically, after the comfort level index of the previous period is displayed, the step S2 needs to be returned to and the steps S2 to S5 are repeated to form a cycle, so that the comfort level index is continuously displayed in the running process of the vehicle, and the riding experience of the user is improved.
In summary, according to the indicating device and the indicating method for riding comfort provided by the embodiment of the invention, the triaxial acceleration sensor is fixed on the supporting spring, so that the inertial response of a non-driver is simulated. By fitting the distribution of the Z-axis inclination angles of the triaxial accelerometer, the convexity and convexity of a curve are reflected, the convexity and convexity of the curve are quantized in a normalized mode, and finally an index of comfort level is given, so that the stability of the current driving is reflected. Based on the technical scheme provided by the invention, the riding comfort level of the running vehicle can be effectively indicated, on one hand, the running vehicle can be warned to a driver, closed-loop control is formed, and the safety driving consciousness of the driver is improved; and on the other hand, the method can also be used as one of evaluation reference indexes of driving technology and safety service consciousness and used for driving technology evaluation and risk assessment.
The device and method for indicating riding comfort provided by the invention are described in detail above. Any obvious modifications to the present invention, without departing from the spirit thereof, would constitute an infringement of the patent rights of the invention and would take on corresponding legal liabilities.
Claims (8)
1. A method of indicating ride comfort, comprising the steps of:
initializing a sensor measurement module and performing data configuration;
judging whether the data in a certain period is updated or not, if so, reading the data, then resolving the Z-axis inclination angle and storing the Z-axis inclination angle into a cache area; if the data is not updated, continuing to update the data until the data is updated; wherein, the running direction of the vehicle is defined as a Y-axis direction, the direction perpendicular to the Y-axis direction in the horizontal plane is defined as an X-axis direction, and the direction perpendicular to the Y-axis direction in the vertical plane is defined as a Z-axis direction;
judging whether the accumulated sampling points reach the set number N, if so, analyzing the Z-axis inclination distribution, and calculating a comfort index; if the number of the accumulated sampling points is not N, continuing to accumulate the sampling until the number of the accumulated sampling points is N;
displaying the comfort index through a sensor measurement module and emptying the cache;
returning to the data updating judging step, and judging whether the data of the next period is updated or not;
if the number of accumulated sampling points reaches N, analyzing the Z-axis inclination angle distribution, and calculating a comfort index, wherein the method specifically comprises the following sub-steps:
carrying out distribution estimation on the Z-axis inclination angle;
screening an effective data set S for subsequent model parameter training;
giving optimal parameter estimation value through model parameter trainingAnd c o ；
Based on the parameter estimation valueAnd c o The comfort level index is judged and output,
wherein the optimal parameter estimation value is given through model parameter trainingAnd c o The method specifically comprises the following substeps:
assuming a total of K elements in the active dataset S, where elements are defined as (K, S) k )，k＝0，...，K－1；
Training to obtain the parameter estimation value according to the cost functionc o ，/>Wherein (1)>Representing the concavity and convexity of the distribution curve, c representing the steady state expectation of tilt angle;
said estimating value according to said parameterAnd c o Deciding the output comfort index, comprising calculating said comfort index according to the formula>
Wherein, takec＝c o Epsilon is a system adjustable parameter, and the larger the epsilon value is, the less sensitive the comfort index calculation is to the parameter estimated value, and conversely, the more sensitive the comfort index calculation is to the parameter estimated value.
2. The indication method as claimed in claim 1, wherein if the data is updated, the Z-axis tilt angle is calculated after the data is read and stored in the buffer, and the method specifically comprises the following sub-steps: the sensor measurement module reads the updated instantaneous acceleration values of X, Y, Z in three directions, which are A respectively x(n) 、A y(n) 、A z(n) The method comprises the steps of carrying out a first treatment on the surface of the Calculating a Z-axis inclination angle gamma (n) according to a formula and storing the Z-axis inclination angle gamma (n) into a buffer area;
3. the indication method as claimed in claim 2, wherein the step of estimating the Z-axis tilt angle comprises the following sub-steps:
let the update frequency of the data set be f u Then n=1/(f) u *T s )；
Making M-level histogram statistics on the Z-axis inclination angle gamma (N), n=0, and N-1 to obtain a distribution sequence D (i), i=0, and M-1; wherein M is the number of intervals counted by the histogram, and i is the index of the counted intervals.
4. A method of indicating as claimed in claim 3, wherein said screening of valid data sets for subsequent model parameter training comprises the sub-steps of:
let the effective data set after data screening be S, wherein the elements in the effective data set S consist of non-zero elements of the sequence D (i), wherein
5. The indication method according to any one of claims 1 to 4, characterized in that: the sensor measurement module is initialized and data configuration is carried out, and the method specifically comprises the following sub-steps:
initializing buffer zone data and resetting a triaxial acceleration module in the sensor measurement module;
configuring a timer, a watchdog and a timer interrupt response program;
the timing interruption response program comprises the steps of reading three-axis acceleration instantaneous data and updating the three-axis acceleration instantaneous data and the mark.
6. An indication device of riding comfort, characterized by comprising a sensor measurement module for implementing the indication method according to any one of claims 1-5.
7. The pointing device of claim 6, further comprising:
a base for placement on a vehicle horizontal surface;
the first end of the elastic support piece is fixed on the top surface of the base, and the second end of the elastic support piece can elastically swing relative to the first end of the elastic support piece;
a support part mounted at a second end of the elastic support member,
the sensor measurement module is arranged on one side, far away from the base, of the supporting part and is used for calculating and displaying the comfort index.
8. The pointing device of claim 6, wherein:
the sensor measurement module comprises a power supply module, a triaxial acceleration module, a singlechip and an indication execution module, wherein the triaxial acceleration module, the singlechip and the indication execution module are electrically connected with the power supply module;
the triaxial acceleration module is electrically connected with the singlechip and is used for detecting instantaneous acceleration values of the vehicle in three directions at the current moment and feeding back the instantaneous acceleration values to the singlechip;
wherein, the running direction of the vehicle is defined as a Y-axis direction, the direction perpendicular to the Y-axis direction in the horizontal plane is defined as an X-axis direction, and the direction perpendicular to the Y-axis direction in the vertical plane is defined as a Z-axis direction;
the indication execution module is electrically connected with the singlechip and used for displaying the comfort index;
the singlechip is used for completing the configuration of triaxial acceleration, reading and analyzing data, and driving the indication execution module to display the comfort index.
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| CN202111159473.2A CN113960329B (en) | 2021-09-30 | 2021-09-30 | Indication device and indication method for riding comfort |
| PCT/CN2022/123510 WO2023051818A1 (en) | 2021-09-30 | 2022-09-30 | Indication device and method for riding comfort |
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| CN113960329B (en) * | 2021-09-30 | 2023-11-07 | 瞬联软件科技（北京）有限公司 | Indication device and indication method for riding comfort |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008265692A (en) * | 2007-04-25 | 2008-11-06 | Railway Technical Res Inst | Vehicle body inclination angle control device, vehicle body inclination angle control method and railway rolling stock |
| CN101509932A (en) * | 2009-04-01 | 2009-08-19 | 南京信息工程大学 | Bus amenity monitoring device based on acceleration variation |
| CN106030245A (en) * | 2014-04-25 | 2016-10-12 | 深圳市大疆创新科技有限公司 | Inertial sensing device |
| CN106324284A (en) * | 2015-06-15 | 2017-01-11 | 北京纳米能源与系统研究所 | Accelerometer |
| CN108248608A (en) * | 2017-12-28 | 2018-07-06 | 北京百度网讯科技有限公司 | For assessing the method and apparatus of the comfort level of control loop |
| JP2020046233A (en) * | 2018-09-14 | 2020-03-26 | 国立大学法人 東京大学 | Angular acceleration sensor |
| CN111861128A (en) * | 2020-06-20 | 2020-10-30 | 清华大学 | Method and system for evaluating connection comfortableness of automatic driving vehicle in man-machine cooperative operation process and storage medium |
| DE102019217431A1 (en) * | 2019-11-12 | 2021-05-12 | Continental Teves Ag & Co. Ohg | Method for evaluating the dynamic driving behavior of a vehicle with at least one driver assistance function |
| CN113104048A (en) * | 2021-03-25 | 2021-07-13 | 浙江大学 | Vehicle control system and method considering motion sickness of passengers in vehicle |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP6106602B2 (en) * | 2011-12-06 | 2017-04-05 | 国立大学法人東京海洋大学 | Rollover limit detection system |
| CN205826320U (en) * | 2016-05-24 | 2016-12-21 | 魏高恒 | A kind of train vibration detection device |
| JP6770414B2 (en) * | 2016-11-28 | 2020-10-14 | 日鉄レールウェイテクノス株式会社 | Ride comfort measurement method and equipment |
| CN106864461A (en) * | 2017-02-15 | 2017-06-20 | 武汉极目智能技术有限公司 | A kind of method that vehicle movement behavior is judged based on acceleration transducer |
| WO2019117004A1 (en) * | 2017-12-13 | 2019-06-20 | オムロン株式会社 | Safety check evaluation device, on-board device, safety check evaluation system comprising these, safety check evaluation method, safety check evaluation program, and storage medium |
| CN113960329B (en) * | 2021-09-30 | 2023-11-07 | 瞬联软件科技（北京）有限公司 | Indication device and indication method for riding comfort |
-
2021
- 2021-09-30 CN CN202111159473.2A patent/CN113960329B/en active Active
-
2022
- 2022-09-30 WO PCT/CN2022/123510 patent/WO2023051818A1/en unknown
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2008265692A (en) * | 2007-04-25 | 2008-11-06 | Railway Technical Res Inst | Vehicle body inclination angle control device, vehicle body inclination angle control method and railway rolling stock |
| CN101509932A (en) * | 2009-04-01 | 2009-08-19 | 南京信息工程大学 | Bus amenity monitoring device based on acceleration variation |
| CN106030245A (en) * | 2014-04-25 | 2016-10-12 | 深圳市大疆创新科技有限公司 | Inertial sensing device |
| CN106324284A (en) * | 2015-06-15 | 2017-01-11 | 北京纳米能源与系统研究所 | Accelerometer |
| CN108248608A (en) * | 2017-12-28 | 2018-07-06 | 北京百度网讯科技有限公司 | For assessing the method and apparatus of the comfort level of control loop |
| JP2020046233A (en) * | 2018-09-14 | 2020-03-26 | 国立大学法人 東京大学 | Angular acceleration sensor |
| DE102019217431A1 (en) * | 2019-11-12 | 2021-05-12 | Continental Teves Ag & Co. Ohg | Method for evaluating the dynamic driving behavior of a vehicle with at least one driver assistance function |
| CN111861128A (en) * | 2020-06-20 | 2020-10-30 | 清华大学 | Method and system for evaluating connection comfortableness of automatic driving vehicle in man-machine cooperative operation process and storage medium |
| CN113104048A (en) * | 2021-03-25 | 2021-07-13 | 浙江大学 | Vehicle control system and method considering motion sickness of passengers in vehicle |
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| WO2023051818A1 (en) | 2023-04-06 |
| CN113960329A (en) | 2022-01-21 |
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