TWI756648B - A method of judging driving behavior by vehicle body vibration - Google Patents

Abstract

A method for judging driving behavior by vehicle body vibration conditions, comprising: in a driving route, a sensing unit senses a reading of a vehicle at at least two sampling time points; a processing unit uses the reading at the sampling time points Substitute an arithmetic formula for operation to obtain an initial value; and the processing unit uses the initial value as a vibration estimate, compares the vibration estimate with a standard value of the driving route, and obtains that the vehicle is in the driving route of a rating. The processing unit converts the reading obtained by the sensing unit into the estimated vibration amount by using the appropriate calculation formula, and then a display unit is used for a user to view the estimated vibration amount and the score in real time, so that the user can understand Improve your driving behavior immediately.

Description

A method of judging driving behavior by vehicle body vibration

The present invention relates to a method for judging driving behavior, and more particularly, to a method for judging driving behavior by vehicle body vibration.

When driving on the road, the driving behavior of the driver is often the main factor affecting the driving safety, among which the sudden braking is one of the main reasons that are likely to cause a collision accident.

The method of judging driving behavior, for example, there is Patent Publication No. 201741898 of the Republic of China, which uses image recognition to assist in judging the driving behavior of drivers. Specifically, it is a system and method for insurance or vehicle management using cloud driving record data. The action images and driving behavior information provided by the action recording and analysis device are sent to the cloud server center for storage and analysis. Here, the system of the aforementioned patent includes at least two parts: a mobile recording and analyzing device and a cloud server center. The cloud server center includes a UBI management module and a vehicle industry management module, and the moving image and the driving behavior information can be uploaded to the cloud server center for big data analysis by using wireless transmission technology, so as to be provided to the UBI The management module and the vehicle management module are used for the purpose of driving or vehicle insurance or fare assessment.

In addition to the assistance of images, the driving behavior of the driver can also be directly judged from the stability of the vehicle, that is, the vibration condition of the vehicle. Therefore, the purpose of the present invention is to provide a method for judging the driving behavior from the vibration condition of the vehicle.

Therefore, the present inventor proposes a method for judging driving behavior based on the vibration of a vehicle body, comprising: in a driving route, a sensing unit senses a reading of a vehicle at at least two sampling time points; a processing unit The reading at the sampling time point is substituted into an arithmetic formula for operation to obtain an initial value; and the processing unit uses the initial value as a vibration estimate, compares the vibration estimate with a standard value of the driving route, and obtains A score of the vehicle in the driving route, wherein the processing unit sets the sampling time point at every sampling time in the driving route, and the processing unit sequentially substitutes the readings at two adjacent sampling time points into the The operation formula is operated to obtain the initial value of the complex number, and the estimated vibration amount is obtained by summing and averaging the initial value of the complex number, and the processing unit compares the estimated vibration amount with the standard value to obtain the score.

Further, there is a positioning unit, and the processing unit determines the driving route according to the positioning result of the positioning unit, so as to obtain the standard value of the driving route.

Further, there is a display unit, after the processing unit obtains the score, the display unit displays the score and/or the estimated vibration amount.

Further, there is a storage unit. After the processing unit obtains the score, the storage unit stores the score and/or the estimated vibration amount.

Wherein, the sensing unit is one of a gravity sensor and a gyroscope or a combination thereof.

Wherein, when the sensing unit is a three-axis gravity sensor or a gyroscope, the formula is | x _t+1 - x _t |+| y _{t +1} - y _t |+| z _{t +1} - z _t |, where x, y and z are the readings on the three axes of the sensing unit, and the subscripts t and t+1 respectively refer to the reading at one of the sampling time points and the adjacent next sampling the reading at that point in time.

Wherein, when the sensing unit is a single-axis gravity sensor or a gyroscope, the formula is | x _{t +1} - x _t |, where x, y and z are the values obtained directly by the sensing unit Readings, with subscripts t and t+1 respectively refer to the reading at one of the sampling time points and the reading at the next adjacent sampling time point.

，其中，x、y及z為該感測單元三個軸向上的該讀數，加上下標t及t+1分別指其中一個該取樣時點的該讀數與相鄰之下一個該取樣時點的該讀數。 Wherein, when the sensing unit is a three-axis gravity sensor or a gyroscope, the formula is:

, where x, y and z are the readings on the three axes of the sensing unit, and the subscripts t and t+1 respectively refer to the reading at one of the sampling time points and the adjacent next sampling time point. reading.

Wherein, the processing unit is a processor arranged on the vehicle or a server in the cloud.

According to the above technical features, the following effects can be achieved:

1. The processing unit converts the reading obtained by the sensing unit into an estimated vibration value with an appropriate formula, and then the display unit allows the user to view the estimated vibration amount and score in real time, allowing users to understand their own driving behavior and make immediate decisions. Improvement in driving behavior.

2. The processing unit can be the vehicle's own trip computer or a cloud server. Users can choose to use the trip computer as a stand-alone device or choose a cloud server for big data analysis according to their own needs.

3. Each time the estimated vibration amount and score are stored in the storage unit, and the driving route is also recorded by the positioning unit, so that the user can evaluate whether their driving behavior has improved when driving the vehicle on the same driving route next time.

4. A large number of estimated vibration volumes and scores can be provided to insurance units and government units, etc., as a reference for subsequent insurance and regulation formulation.

5. The method of judging the driving behavior by the vibration of the vehicle body can be used alone, and can also be used with the existing brake and accelerator detection systems as a double check for sudden braking and pressing the accelerator to improve the user's driving behavior. Judgment accuracy.

1,1a: Sensing unit

2,2a: Positioning unit

3,3a: Display unit

4: Trip computer

4a: Cloud server

5: Storage unit

[Figure 1] is a system block diagram of the first embodiment of the present invention.

[Fig. 2] is a flow chart of the first embodiment of the present invention.

[Figure 3] is a system block diagram of the second embodiment of the present invention.

[FIG. 4] is a flow chart of the second embodiment of the present invention.

In view of the above technical features, the main effect of the method of the present invention for judging the driving behavior by the vibration of the vehicle body will be clearly presented in the following embodiments.

Please refer to the first figure and the second figure, which show the first embodiment of the method for judging the driving behavior by the vibration of the vehicle body according to the present invention.

In this embodiment, a sensing unit 1 and a positioning unit 2 are firstly installed on a vehicle, and the sensing unit 1 and the positioning unit 2 are signal-connected to a processing unit, which is then signal-connected to a display unit. Unit 3.

The sensing unit 1 may be one of a gravity sensor and a gyroscope or a combination thereof. The positioning unit 2 may be a GPS unit. The processing unit may be the on-board computer 4 of the vehicle or other processors disposed on the vehicle. In this embodiment, the processing unit is the on-board computer 4 . The display unit 3 is a display, which can be installed on the vehicle, or combined with a mobile device, so as to facilitate viewing by a user.

The first embodiment of the method for judging driving behavior by vehicle body vibration includes the following steps: in a driving route, the trip computer 4 sets a sampling time point at every sampling time, and the positioning unit 2 simultaneously records the vehicle route.

The sensing unit 1 senses the vehicle at the sampling time point to obtain a reading of the vehicle.

The on-board computer 4 sequentially substitutes the readings at the two adjacent sampling time points into an arithmetic formula for operation to obtain a complex initial value.

When the sensing unit 1 is a three-axis gravity sensor or a gyroscope, the formula is | x _{t +1} - x _t |+| y _{t +1} - y _t |+| z _{t +1} - z _t |, where x, y and z are the readings on the three axes of the sensing unit 1, and the subscripts t and t+1 respectively refer to the reading at one of the sampling time points and the next one after the sampling time has elapsed the reading at the adjacent sampling time point.

When the sensing unit 1 is a single-axis gravity sensor or a gyroscope, the formula is | x _{t +1} - x _t |, where x, y and z are the values obtained directly by the sensing unit 1 Readings, with subscripts t and t+1 respectively refer to the reading at one of the sampling time points and the reading at the next adjacent sampling time point after the sampling time has elapsed.

，其中，x、y及z為該感測單元1三個軸向上的該讀數，加上下標t及t+1分別指其中一個該取樣時點的該讀數與經過該取樣時間的下一個相鄰之該取樣時點的該讀數。 When the sensing unit 1 is a three-axis gravity sensor or a gyroscope, the formula can also be

, where x, y and z are the readings on the three axes of the sensing unit 1, and the subscripts t and t+1 respectively refer to the reading at one of the sampling time points and the next adjacent one after the sampling time has passed the reading at the sampling time point.

The trip computer 4 selects a unit distance in the driving route, and then adds and averages the initial values in the unit distance to obtain an estimated vibration amount for the unit distance. Should The unit distance may also be the entire section of the driving route, and the driving route is directly regarded as the unit distance for description below.

The trip computer 4 compares the estimated vibration amount with a standard value of the unit distance to obtain a score of the vehicle in the unit distance, that is, the score in the driving route. The standard value can be the average of the estimated vibration amount of a plurality of vehicles in the unit distance, or the estimated vibration amount obtained by computer software simulation, and sent to the trip computer 4 in advance for positioning according to the positioning unit 2 As a result, the standard value was selected for comparison. From the score, the stability of the vehicle can be judged. When the user drives the vehicle with better driving behavior, the stability of the vehicle should be higher, and the score is also higher. On the contrary, when the user drives the vehicle The worse the driving behavior, the less smooth the vehicle should be, and the lower the score. Finally, the display unit 3 is used for the user to view the estimated vibration amount and the score in real time, which is convenient for the user to understand his own driving behavior in the unit distance, and to immediately improve the driving behavior, the estimated vibration amount and The score can also be stored in a suitable storage unit 5 . Since the positioning unit 2 records the driving route, and the storage unit 5 stores the estimated vibration amount and the score, when the user drives the same driving route next time, the trip computer 4 can use the display unit to 3. Display the estimated vibration amount and the score at different times, so that the user can evaluate whether his driving behavior has improved this time compared with the last time.

Please refer to FIG. 3 and FIG. 4 , which illustrate the second embodiment of the method for judging the driving behavior by the vibration of the vehicle body according to the present invention. The difference between this embodiment and the first embodiment is that: in the first embodiment, the processing unit is the trip computer 4 and has a storage unit 5; in this embodiment, the processing unit is a cloud server 4a is replaced, and the cloud server 4a itself has a storage function, and no additional storage unit is required.

The cloud server 4a also sets the sampling time point at every sampling time, and the positioning unit 2a simultaneously records the driving route. The sensing unit 1a senses the vehicle at the sampling time point to obtain the reading of the vehicle.

According to the type of the sensing unit 1a, the cloud server 4a sequentially substitutes the readings at the two adjacent sampling time points into the appropriate arithmetic expression to obtain a complex initial value. This formula is the same as that of the first embodiment, and will not be repeated here.

The cloud server 4a selects the unit distance in the driving route, and the unit distance may also be the entire driving route. The cloud server 4a then adds and averages the initial values in the unit distance to obtain the This estimated amount of vibration per unit distance.

The cloud server 4a compares the estimated vibration amount with the standard value of the unit distance to obtain the score of the vehicle in the unit distance, that is, the score in the driving route. The cloud server 4a also uses the display unit 3a for the user to view the estimated vibration amount and the score, so as to facilitate the user to understand his own driving behavior in the unit distance. In addition, the cloud server 4a itself has the function of information storage, so the estimated vibration amount and the score can be stored in the cloud server 4a without an additional storage unit.

The biggest difference between this embodiment and the first embodiment is that the computing step is achieved by the cloud server 4a, which can save the computing power required by the vehicle itself. The user can choose to use the first embodiment according to his own needs. The trip computer 4 is used as a stand-alone device [please match the trip computer 4 with the first picture], or the cloud server 4a of this embodiment is selected to perform big data analysis. In addition, the cloud server 4a stores a large amount of the estimated vibration amount and the score corresponding to each of the driving routes. The cloud server 4a can also store the estimated vibrations of other users in the driving route this time. The average value of the vibration amount and the score is sent to the display unit 3a for display, so that the user can evaluate his own driving behavior in the current situation. Whether it is good or bad for some users can also be used for the older user to assess whether he is still suitable for driving the vehicle. And a large amount of the estimated vibration amount and the score can also be provided to insurance units and government units, etc., as a reference for subsequent insurance and regulation formulation.

The method of judging driving behavior based on the vibration of the vehicle body can not only be used alone, but also can be used with the existing brake and accelerator detection systems, as a double test of whether to brake hard and press the accelerator hard, and greatly improve the driving behavior of the user. judgment accuracy.

Based on the descriptions of the above embodiments, one can fully understand the operation, use and effects of the present invention, but the above-mentioned embodiments are only preferred embodiments of the present invention, which should not limit the implementation of the present invention. Scope, that is, simple equivalent changes and modifications made according to the scope of the patent application of the present invention and the contents of the description of the invention, all fall within the scope of the present invention.

Claims (9)

A method for judging driving behavior by vehicle body vibration conditions, comprising: in a driving route, a sensing unit senses a reading of a vehicle at at least two sampling time points; a processing unit uses the reading at the sampling time points Substitute an arithmetic formula for operation to obtain an initial value; and the processing unit uses the initial value as a vibration estimate, compares the vibration estimate with a standard value of the driving route, and obtains that the vehicle is in the driving route A score of , wherein the processing unit sets the sampling time point at every sampling time in the driving route, and the processing unit sequentially substitutes the readings at the two adjacent sampling time points into the arithmetic formula for calculation to obtain The initial value of the complex number is obtained by summing and averaging the initial value of the complex number to obtain the estimated vibration amount, and the processing unit then compares the estimated vibration amount with the standard value to obtain the score. As claimed in claim 1, the method for judging driving behavior based on the vibration of the vehicle body further includes a positioning unit, and the processing unit determines the driving route according to the positioning result of the positioning unit, so as to obtain the standard value of the driving route. As claimed in claim 1, the method for judging driving behavior by vehicle body vibration conditions further includes a display unit. After the processing unit obtains the score, the display unit displays the score and/or the estimated vibration amount. According to the method for judging driving behavior by vehicle body vibration condition of claim 1, further, there is a storage unit, after the processing unit obtains the score, the storage unit stores the score and/or the estimated vibration amount. The method for judging driving behavior by vehicle body vibration conditions according to claim 1, wherein the sensing unit is one of a gravity sensor and a gyroscope or a combination thereof. According to the method for judging driving behavior according to the vibration of the vehicle body according to claim 5, when the sensing unit is a three-axis gravity sensor or a gyroscope, the calculation formula is | x _{t +1} - x _t | +| y _{t +1} - y _t |+| z _{t +1} - z _t |, where x, y and z are the readings on the three axes of the sensing unit, plus the subscripts t and t+1, respectively Refers to the reading at one of the sampling time points and the reading at the next adjacent sampling time point. According to the method for judging driving behavior by vehicle body vibration of claim 5, when the sensing unit is a single-axis gravity sensor or a gyroscope, the calculation formula is | x _{t +1} - x _t | , where x, y and z are the readings directly obtained by the sensing unit, and the subscripts t and t+1 respectively refer to the reading at one of the sampling time points and the reading at the next adjacent sampling time point. The method for judging driving behavior according to the vibration of the vehicle body according to claim 5, wherein, when the sensing unit is a three-axis gravity sensor or a gyroscope, the calculation formula is:

, where x, y and z are the readings on the three axes of the sensing unit, and the subscripts t and t+1 respectively refer to the reading at one of the sampling time points and the adjacent next sampling time point. reading. The method for judging driving behavior by vehicle body vibration conditions according to claim 1, wherein the processing unit is a processor disposed on the vehicle or a server in the cloud.

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