A control system and method for in-vehicle MIFI based on vehicle motion state

Abstract

The present invention provides a control system and method for an in-vehicle MIFI based on the vehicle motion state, belonging to the field of portable broadband wireless devices, and capable of better controlling and managing the in-vehicle MIFI. The control system includes a data acquisition unit, a vehicle motion state detection unit, and a switch control unit. Based on the data such as acceleration and angular velocity collected by the data acquisition unit, the vehicle motion state detection unit identifies the current motion state of the vehicle; through the vehicle motion state and the duration of maintaining the current motion state, the switch control unit automatically controls the opening and closing of the WIFI hotspot. The control method is based on the above control system. The present invention takes the vehicle motion state as a key factor for controlling whether to automatically turn on and off the WIFI hotspot of the in-vehicle MIFI, aiming to guide users to use WIFI reasonably and timely, avoid unnecessary traffic loss, and control the fees for using network traffic.

Description

Technical Field

[0001] The present invention relates to the field of portable broadband wireless devices, and particularly to a control system and method for in-vehicle MiFi based on the motion state of a vehicle. Background Art

[0002] MiFi (Mobile WIFI) is a portable broadband wireless device, which is the size of a mobile phone. The portable broadband wireless device can be used to set up a specific network and share the network connection at any location through a cellular connection.

[0003] In-vehicle MiFi has become a rigid demand of the younger generation of consumers for vehicle configurations. The published document with the publication number CN105897806A discloses a method and system for controlling the Internet access behavior of an in-vehicle MIFI device based on the driving condition of a vehicle. This published document uses the engine speed being 0 or not 0 as a clue to judge the start-stop state of the vehicle, obtains the timing when the in-vehicle MIFI has an Internet access behavior, and restricts its Internet access behavior by means of the server issuing an instruction.

[0004] Since the vehicle often encounters temporary stops (such as waiting for a red light, traffic jams) during driving, at this time the vehicle automatically shuts off, and when it is necessary to move forward again, the engine is restarted. Therefore, the above patent uses the engine speed being 0 or not 0 as a clue to judge the start-stop state of the vehicle. When there is a temporary stop, the server will send a prohibition instruction to the in-vehicle MIFI, and then the in-vehicle MIFI cannot continue to provide network for the user during the temporary stop.

[0005] In order to better control and manage the in-vehicle MiFi, it is necessary to research a control system and method for in-vehicle MiFi based on the motion state of the vehicle. Summary of the Invention

[0006] The purpose of the present invention is to provide a control system and method for in-vehicle MiFi based on the motion state of a vehicle, which identifies the current motion state of the vehicle according to the data such as acceleration and angular velocity collected by sensors; and automatically controls the opening and closing of the WIFI hotspot through the motion state of the vehicle and the duration of maintaining the current motion state.

[0007] The technical solution for achieving the purpose of the present invention is as follows:

[0008] In a first aspect, the present invention provides a control system for in-vehicle MiFi based on the motion state of a vehicle, including:

[0009] A data acquisition unit, which is used to acquire the motion data of the current vehicle;

[0010] A vehicle motion state detection unit, which is connected to the data acquisition unit. The vehicle motion state detection unit processes the motion data and outputs the current motion state of the vehicle and the duration of maintaining the current motion state through operations. The vehicle motion state detection unit also judges the real-time working state of the in-vehicle MIFI according to the current motion state and the duration of maintaining the current motion state.

[0011] A switch control unit, which is connected to the vehicle motion state detection unit. The switch control unit controls the in-vehicle MIFI to be in the real-time working state.

[0012] In combination with the first aspect, in some embodiments, the vehicle motion state detection unit includes:

[0013] An operation module, into which the motion data is input to obtain the motion change data of the current vehicle.

[0014] An analysis module, which receives the motion change data. The analysis module stores thresholds, and the analysis module compares the motion change data with the thresholds to obtain the current motion state of the vehicle and the duration of maintaining the current motion state.

[0015] An identification module, into which the current motion state and the duration of maintaining the current motion state are input, and the identification module outputs the real-time working state of the in-vehicle MIFI.

[0016] In combination with the first aspect, in some embodiments, the identification module includes an identification model. The identification model selects the standard deviation as an index, and first calculates the standard deviations S x 、S y 、S z of the accelerations of the x-axis, y-axis, and z-axis within the time period Δt respectively, and then performs a weighted average on S x 、S y 、S z .

[0017] In combination with the first aspect, in some embodiments, the data acquisition unit includes:

[0018] A three-axis acceleration sensor for monitoring the acceleration signals of the x-axis, y-axis, and z-axis of the current vehicle.

[0019] An angular velocity sensor for monitoring the angular velocity signal of the current vehicle.

[0020] The vehicle motion state detection unit processes the acceleration signals of the x-axis, y-axis, and z-axis of the current vehicle and the angular velocity signal of the current vehicle.

[0021] In combination with the first aspect, in some embodiments, the vehicle motion state detection unit calculates the acceleration signal and the angular velocity signal, and outputs the current motion state of the vehicle and the length of time the vehicle remains in the current motion state.

[0022] In combination with the first aspect, in some embodiments, the current motion state includes a static state and a motion state, and the static state includes a vehicle unstarted state, a vehicle idling state, a started static state, and a parked static state;

[0023] The real-time working status of the vehicle-mounted MIFI includes an on state and an off state.

[0024] In combination with the first aspect, in some embodiments, the method further includes:

[0025] A server authentication unit, the server authentication unit is connected to the switch control unit, and the server authentication unit carries a SIM card identifier to initiate an authentication request to the server;

[0026] The server is connected to the server authentication unit, and the server receives the authentication request and returns the usage period of the network link. The authentication is deemed to be passed if the usage period is within the validity period.

[0027] In a second aspect, an embodiment of the present invention provides a vehicle-mounted MIFI control method based on a vehicle motion state, comprising:

[0028] Collect the motion data of the current vehicle;

[0029] Outputting the current motion state of the current vehicle and the duration of maintaining the current motion state;

[0030] Determine the real-time working status of the vehicle-mounted MIFI based on the current motion state and the duration of the current motion state;

[0031] The vehicle-mounted MIFI is controlled to be in the real-time working state.

[0032] In conjunction with the second aspect, in some embodiments, outputting the current motion state of the current vehicle and the duration of maintaining the current motion state includes:

[0033] The motion data is input into a calculation module to obtain the motion change data of the current vehicle;

[0034] The analysis module compares the motion change data with the stored threshold value to obtain the current motion state of the vehicle and the duration of the vehicle remaining in the current motion state;

[0035] The identification module outputs the real-time working status of the vehicle-mounted MIFI according to the current motion state and the duration of maintaining the current motion state.

[0036] In combination with the second aspect, in some embodiments, the recognition module outputs the real-time working state of the vehicle-mounted MIFI through a recognition model, and the recognition model inputs the current motion state and the duration of maintaining the current motion state;

[0037] The identification model selects standard deviation as an indicator, first calculates the standard deviation S of the acceleration of the x-axis, y-axis, and z-axis within the Δt time period. x , S y , S z , and then to S x , S y , S z Do a weighted average.

[0038] In conjunction with the second aspect, in some embodiments, collecting the motion data of the current vehicle includes:

[0039] The three-axis acceleration sensor monitors the acceleration signals of the current vehicle's x-axis, y-axis and z-axis; the angular velocity sensor monitors the angular velocity signal of the current vehicle.

[0040] In conjunction with the second aspect, in some embodiments, the vehicle motion state detection unit outputs the current motion state of the current vehicle and the duration of maintaining the current motion state;

[0041] The vehicle motion state detection unit determines the real-time working state of the vehicle-mounted MIFI according to the current motion state and the duration of maintaining the current motion state;

[0042] The vehicle motion state detection unit calculates the acceleration signal and the angular velocity signal, and outputs the current motion state of the vehicle and the duration of maintaining the current motion state.

[0043] In combination with the second aspect, in some embodiments, the current motion state includes a static state and a motion state, and the static state includes a vehicle unstarted state, a vehicle idling state, a started static state, and a parked static state;

[0044] The real-time working status of the vehicle-mounted MIFI includes an on state and an off state.

[0045] In conjunction with the second aspect, in some embodiments, the method further includes:

[0046] The server authentication unit carries the SIM card identifier to initiate an authentication request to the server;

[0047] The server receives the authentication request and returns the usage period of the network link. The authentication is considered successful if the usage period is within the validity period.

[0048] Compared with the prior art, the present invention has the following beneficial effects:

[0049] 1. The present invention takes the vehicle motion state as a key factor to control whether the in-vehicle MIFI automatically turns on and off the WIFI hotspot, aiming to guide users to use the WIFI reasonably and timely, avoid unnecessary traffic loss, and control the fees for using network traffic.

[0050] 2. The present invention adopts a server authentication mechanism for SIM card information, which enables relevant manufacturers to conveniently manage MIFI Internet access. BRIEF DESCRIPTION OF THE DRAWINGS

[0051] Figure 1 FIG. is a block diagram of a control system for an in-vehicle MIFI based on vehicle motion state according to some embodiments of the present invention;

[0052] Figure 2 FIG. is a flowchart of a control method for an in-vehicle MIFI based on vehicle motion state according to some embodiments of the present invention. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0053] The present invention will be described in detail below with reference to the embodiments shown in the drawings. It should be noted that these embodiments are not intended to limit the present invention, and any equivalent transformation or substitution in terms of function, method, or structure made by those of ordinary skill in the art based on these embodiments shall fall within the protection scope of the present invention.

[0054] The present invention provides an in-vehicle MIFI control system based on vehicle motion state, including:

[0055] A data acquisition unit for acquiring the motion data of the current vehicle;

[0056] A vehicle motion state detection unit connected to the data acquisition unit, which processes the motion data, outputs the current motion state of the vehicle and the duration of maintaining the current motion state through calculation; the vehicle motion state detection unit also judges the real-time working state of the in-vehicle MIFI according to the current motion state and the duration of maintaining the current motion state;

[0057] A switch control unit connected to the vehicle motion state detection unit, which controls the in-vehicle MIFI to be in a real-time working state.

[0058] In some embodiments, the vehicle motion state detection unit includes:

[0059] An operation module, where the motion data is input into the operation module to obtain the motion change data of the current vehicle;

[0060] An analysis module receives the motion change data and stores a threshold value. The analysis module compares the motion change data with the threshold value to obtain the current motion state of the vehicle and the duration of maintaining the current motion state.

[0061] The recognition module inputs the current motion state and the duration of maintaining the current motion state into the recognition module, and the recognition module outputs the real-time working state of the vehicle-mounted MIFI.

[0062] In some embodiments, the recognition module includes a recognition model. The recognition model selects the standard deviation as an indicator and first calculates the standard deviation S of the acceleration of the x-axis, y-axis, and z-axis within the time Δt. x , S y , S z , and then to S x , S y , S z Do a weighted average.

[0063] In some embodiments, the data acquisition unit includes:

[0064] A three-axis acceleration sensor is used to monitor the acceleration signals of the current vehicle's x-axis, y-axis, and z-axis;

[0065] Angular velocity sensor, used to monitor the angular velocity signal of the current vehicle;

[0066] The vehicle motion state detection unit processes the acceleration signals of the current vehicle's x-axis, y-axis and z-axis, and the current vehicle's angular velocity signal.

[0067] In some embodiments, the vehicle motion state detection unit operates the acceleration signal and the angular velocity signal, and outputs the current motion state of the vehicle and the duration of maintaining the current motion state.

[0068] In some embodiments, the current motion state includes a stationary state and a motion state, and the stationary state includes a vehicle unstarted state, a vehicle idling state, a started stationary state, and a parked stationary state;

[0069] The real-time working status of the vehicle-mounted MIFI, including on and off status.

[0070] In some embodiments, it also includes:

[0071] A server authentication unit, the server authentication unit is connected to the switch control unit, and the server authentication unit carries the SIM card identification to initiate an authentication request to the server;

[0072] The server is connected to the server authentication unit. The server receives the authentication request and returns the usage period of the network link. The authentication is deemed to be passed within the validity period.

[0073] An embodiment of the present invention provides a vehicle-mounted MIFI control method based on the vehicle motion state, including:

[0074] Collect the motion data of the current vehicle;

[0075] Step S110: Output the current motion state of the current vehicle and the duration of maintaining the current motion state;

[0076] Step S120: Determine the real-time working state of the vehicle-mounted MIFI according to the current motion state and the duration of maintaining the current motion state;

[0077] Step S130: Control the vehicle-mounted MIFI to be in the real-time working state.

[0078] In some embodiments, outputting the current motion state of the current vehicle and the duration of maintaining the current motion state includes:

[0079] Input the motion data into the operation module to obtain the motion change data of the current vehicle;

[0080] The analysis module compares the motion change data with the stored threshold values to obtain the current motion state of the vehicle and the duration of maintaining the current motion state;

[0081] The recognition module outputs the real-time working state of the vehicle-mounted MIFI according to the current motion state and the duration of maintaining the current motion state.

[0082] In some embodiments, the recognition module outputs the real-time working state of the vehicle-mounted MIFI through the recognition model, and the recognition model inputs the current motion state and the duration of maintaining the current motion state;

[0083] The recognition model selects the standard deviation as an index, and first calculates the standard deviations S x 、S y 、S z of the accelerations of the x-axis, y-axis, and z-axis within the time period Δt respectively, and then performs a weighted average on S x 、S y 、S z .

[0084] In some embodiments, collecting the motion data of the current vehicle includes:

[0085] The triaxial acceleration sensor monitors the acceleration signals of the x-axis, y-axis, and z-axis of the current vehicle; the angular velocity sensor monitors the angular velocity signal of the current vehicle.

[0086] In some embodiments, the vehicle motion state detection unit outputs the current motion state of the current vehicle and the duration of maintaining the current motion state;

[0087] The vehicle motion state detection unit determines the real-time working state of the vehicle-mounted MIFI according to the current motion state and the duration of maintaining the current motion state;

[0088] The vehicle motion state detection unit calculates the acceleration signal and the angular velocity signal, and outputs the current motion state of the vehicle and the duration of maintaining the current motion state.

[0089] In some embodiments, the current motion state includes a stationary state and a motion state, and the stationary state includes a vehicle unstarted state, a vehicle idling state, a started stationary state, and a parked stationary state;

[0090] The real-time working status of the vehicle-mounted MIFI, including on and off status.

[0091] In some embodiments, it also includes:

[0092] The server authentication unit carries the SIM card identifier to initiate an authentication request to the server;

[0093] The server receives the authentication request and returns the usage period of the network link. The authentication is considered successful if the usage period is within the validity period.

[0094] The embodiment of the present invention discloses a control method and device for vehicle-mounted MIFI based on the vehicle's motion state, the method comprising: identifying the vehicle's current motion state through calculation and analysis based on acceleration, angular velocity and other data collected by sensors inside the device; automatically controlling the opening and closing of the WIFI hotspot according to the vehicle's motion state and the duration of the current motion state. The embodiment of the present invention uses the vehicle's motion state as a key factor in controlling whether the vehicle-mounted MIFI automatically opens and closes the WIFI hotspot, aiming to guide users to use WIFI reasonably and timely, avoid unnecessary traffic loss, and control the charges for using network traffic; coupled with the server's authentication mechanism for SIM card information, relevant manufacturers can conveniently manage MIFI Internet access.

[0095] This device consists of the following parts: a request server authentication unit, a sensor data acquisition unit, a vehicle motion state detection unit, and a WIFI hotspot switch control unit. Request server authentication unit: The primary prerequisite for the in-vehicle MIFI to turn on the WIFI hotspot is that the SIM card information passes server authentication. The request server authentication unit sends an authentication request to the background server with the SIM card identifier, and the server returns the usage period of the network link. If the usage period is within the valid period, it is considered authentication passed. Sensor data acquisition unit: Data is collected through the triaxial acceleration sensor inside the device, and data is collected and recorded every 10 ms. The recorded data includes the current timestamp and triaxial acceleration. Vehicle motion state detection unit: The basic motion states of the vehicle include: stationary state and motion state. The vehicle motion state detection unit takes the collected sensor data as input, and through calculation, outputs the vehicle motion state. The main basis for detection is as follows: Since when the vehicle is stationary (including an unstarted vehicle and a vehicle in an idling state), the values output by its triaxial acceleration sensor are relatively stable; while for a moving vehicle, the values of its triaxial acceleration sensor change significantly. Then, as long as an index that can reflect the degree of change in acceleration data is calculated, it can effectively distinguish whether the vehicle is in motion or stationary. In this method, the standard deviation (the standard deviation is a measure of the degree of dispersion of the average value of a set of data. A larger standard deviation represents a larger difference between most values and their average value; a smaller standard deviation represents that these values are closer to the average value.) is selected as this index. First, calculate the standard deviations Sx, Sy, and Sz of the acceleration on the x, y, and z axes within the Δt time respectively, and then perform a weighted average on Sx, Sy, and Sz.

[0096] The main calculation process is as follows:

[0097] (1) Calculate the average values of the acceleration on the x, y, and z axes within the Δt time respectively

[0098] Record the x-axis acceleration values collected within the Δt time as X1, X2,......Xn, and the average value as X; record the y-axis acceleration values as Y1, Y2,......Yn, and the average value as Y; record the z-axis acceleration values as Z1, Z2,......Zn, and the average value as Z. Then:

[0099] X = (X1 + X2 +......Xn) / n

[0100] Y = (Y1 + Y2 +......Yn) / n

[0101] Z = (Z1 + Z2 +......Zn) / n

[0102] (2) Calculate the standard deviations of the acceleration on the x, y, and z axes within the Δt time respectively

[0103] Sx = sqrt(((X1 - X)^2 + (X2 - X)^2 +......(Xn - X)^2) / (n - 1))

[0104] Sy = sqrt(((Y1 - Y)^2 + (Y2 - Y)^2 +......(Yn - y)^2) / (n - 1))

[0105] Sz = sqrt(((Z1 - z)^2 + (Z2 - Z)^2 +......(Zn - Z)^2) / (n - 1))

[0106] Wherein, Sx is the standard deviation of the acceleration on the x-axis, Sy is the standard deviation of the acceleration on the y-axis, and Sz is the standard deviation of the acceleration on the z-axis.

[0107] (3) Calculate the weighted average S of Sx, Sy, and Sz

[0108] The weights of Sx, Sy, and Sz are 20%, 60%, and 20% respectively (since the y-axis points in the direction of the vehicle's head when the device is fixed in the vehicle, so Sy has a larger proportion).

[0109] S = Sx × 20% + Sy × 60% + Sy × 20%

[0110] When S is greater than the set threshold, it is considered that the vehicle is in a moving state; otherwise, it is in a stationary state.

[0111] For the convenience of the WIFI hotspot switch control unit to process, introducing the power-on startup of the device and the change of the vehicle state, the stationary state can be further divided into: startup stationary state and parking stationary state. When the vehicle starts, the MIFI device starts immediately, and this is the startup stationary state at this time; when the vehicle changes from a moving state to a stationary state, this is the parking stationary state at this time.

[0112] As described above, the vehicle motion states output by the vehicle motion state detection unit are: startup stationary state, moving state, and parking stationary state.

[0113] The WIFI hotspot switch control unit in the embodiment of the present invention: The WIFI hotspot switch control unit takes the vehicle motion state as a key factor for switching the WIFI hotspot. When the vehicle starts, the MIFI device starts immediately and the WIFI is automatically turned on; at this time, if the vehicle has been in the startup stationary state (exceeding 30 minutes), then the WIFI will be automatically turned off after 30 minutes; when the vehicle is in a moving state, the WIFI is always on; when the vehicle changes from a moving state to and remains in the parking stationary state (exceeding 60 minutes), the WIFI will be turned off after 60 minutes. The embodiment of the present invention can be used as a split-type in-vehicle electronic device.

[0114] The series of detailed descriptions listed above are only specific descriptions of the feasible implementation manners of the present invention, and they are not intended to limit the protection scope of the present invention. Any equivalent implementation manners or modifications made without departing from the technical spirit of the present invention should be included in the protection scope of the present invention.

[0115] For those skilled in the art, it is obvious that the present invention is not limited to the details of the above-mentioned exemplary embodiments, and the present invention can be implemented in other specific forms without departing from the spirit or basic characteristics of the present invention. Therefore, from any point of view, the embodiments should be regarded as exemplary and non-limiting. The scope of the present invention is defined by the appended claims rather than the above description. Therefore, all changes falling within the meaning and scope of the equivalent elements of the claims are intended to be included in the present invention. Any reference signs in the claims should not be construed as limiting the claims involved.

[0116] In addition, it should be understood that although this specification is described according to embodiments, not every embodiment only contains an independent technical solution. This narrative manner of the specification is only for clarity. Those skilled in the art should regard the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. An in-vehicle MIFI control system based on vehicle motion state, characterized in that, include: A data acquisition unit, wherein the data acquisition unit is used to collect motion data of the current vehicle; A vehicle motion state detection unit, the vehicle motion state detection unit is connected to the data acquisition unit, the vehicle motion state detection unit processes the motion data, and outputs the current motion state of the vehicle and the duration of the vehicle being kept in the current motion state through calculation; The vehicle motion state detection unit also determines the real-time working state of the vehicle-mounted MIFI according to the current motion state and the duration of maintaining the current motion state; A switch control unit, the switch control unit is connected to the vehicle motion state detection unit, and the switch control unit controls the vehicle-mounted MIFI to be in the real-time working state; The data acquisition unit comprises: A three-axis acceleration sensor is used to monitor the acceleration signals of the current vehicle's x-axis, y-axis, and z-axis; Angular velocity sensor, used to monitor the angular velocity signal of the current vehicle; The vehicle motion state detection unit processes the acceleration signals of the current vehicle's x-axis, y-axis and z-axis, and the angular velocity signal of the current vehicle; The vehicle motion state detection unit comprises: A calculation module, inputting the motion data into the calculation module to obtain motion change data of the current vehicle; An analysis module, the analysis module receives the motion change data, the analysis module stores a threshold, and the analysis module compares the motion change data with the threshold to obtain the current motion state of the vehicle and the duration of maintaining the current motion state; The identification module, the analysis module inputs the current motion state and the duration of maintaining the current motion state into the identification module, and the identification module outputs the real-time working state of the vehicle-mounted MIFI.

2. The in-vehicle MIFI control system according to claim 1, characterized in that, The recognition module includes a recognition model. The recognition model selects the standard deviation as an index and first calculates the standard deviations S x , S y , S z of the accelerations of the x-axis, y-axis, and z-axis within the time period Δt respectively, and then performs a weighted average on S x , S y , S z .

3. The in-vehicle MIFI control system according to claim 1, characterized in that Also includes: A server authentication unit, the server authentication unit is connected to the switch control unit, and the server authentication unit carries a SIM card identifier to initiate an authentication request to the server; The server is connected to the server authentication unit, and the server receives the authentication request and returns the usage period of the network link. The authentication is deemed to be passed if the usage period is within the validity period.

4. A vehicle-mounted MIFI control method based on vehicle motion state, characterized in that, include: Collect the motion data of the current vehicle, including: the acceleration signals of the current vehicle's x-axis, y-axis and z-axis, and the angular velocity signal of the current vehicle; According to the acceleration signal and angular velocity signal of the current vehicle, the current motion state of the vehicle and the duration of maintaining the current motion state are obtained; Outputting the current motion state of the current vehicle and the duration of maintaining the current motion state; Determine the real-time working status of the vehicle-mounted MIFI based on the current motion state and the duration of the current motion state; Control the vehicle-mounted MIFI to be in the real-time working state; The outputting of the current motion state of the current vehicle and the duration of maintaining the current motion state includes: Inputting the motion data into a calculation module to obtain motion change data of the current vehicle; The analysis module compares the motion change data with the stored threshold value to obtain the current motion state of the vehicle and the duration of maintaining the current motion state; The identification module outputs the real-time working status of the vehicle-mounted MIFI according to the current motion state and the duration of maintaining the current motion state.

5. The vehicle-mounted MIFI control method according to claim 4, characterized in that, The recognition module outputs the real-time working status of the vehicle-mounted MIFI through a recognition model, and the recognition model inputs the current motion state and the duration of maintaining the current motion state; The recognition model selects the standard deviation as an indicator, and first calculates the standard deviations S x , S y , S z of the accelerations on the x-axis, y-axis, and z-axis within the time period Δt respectively, and then performs a weighted average on S x , S y , S z .

6. The vehicle-mounted MIFI control method according to claim 4, wherein Also includes: The server authentication unit carries the SIM card identifier to initiate an authentication request to the server; The server receives the authentication request and returns the usage period of the network link. The authentication is considered successful if the usage period is within the validity period.

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