Accurate steering control system of electrically powered baby carriage and electrically powered baby carriage applying the system

Abstract

The application provides a steering precision control system of an electric stroller and an electric stroller applying the system, which comprises a steering test data acquisition module, a steering precision control prediction model construction module and a steering precision control working module.The steering test data acquisition module is used for acquiring steering control test data of the electric stroller.The steering precision control prediction model construction module is used for constructing a steering precision control prediction model for predicting the steering direction of the electric stroller based on the steering control test data.The steering precision control working module is used for obtaining a steering prediction value of the electric stroller based on the steering precision control prediction model, and controlling the power supply of a steering drive assembly of the electric stroller according to the comparison result of the steering prediction value and a steering threshold value, so as to realize the steering precision control of the electric stroller.The steering precision control prediction model is used to control the power supply of the steering drive assembly of the electric stroller, so as to realize the steering precision control of the electric stroller, improve the precision and safety of the steering control of the electric stroller, and enhance the use function and safety function of the electric stroller.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of baby carriages, in particular to a steering precision control system of an electric baby carriage and an electric baby carriage applying the same. BACKGROUND

[0002] The electric toy baby carriage is a toy vehicle for children to ride and play, which realizes the driving of the baby carriage through electric control. The existing steering control of the electric baby carriage usually includes mechanical structure and motor drive combination. In fact, the control steering is affected by the use proficiency and use method of the user, and the steering control of the electric baby carriage is not accurate, which may cause safety hazards.

[0003] The patent with application number CN202210794872.4 discloses an electric baby carriage steering control structure and an electric baby carriage applying the same, which comprises: a steering wheel that automatically returns to the center after losing external force; a driving mechanism that drives the steering wheel of the electric baby carriage to steer using a motor; a first angle sensor for detecting the steering angle of the steering wheel; a second angle sensor for detecting the steering angle of the steering wheel driven by the driving mechanism; a control mechanism electrically connected to the first and second angle sensors, which can ensure that the electric baby carriage uses the motor as the power for steering the steering wheel when manually driving, solving the problem of difficult steering of the steering wheel due to large resistance; the steering wheel is no longer directly mechanically connected to the steering wheel, solving the problem of the steering wheel following the rotation of the traditional baby carriage when using the motor to drive remote control steering; the automatic return function of the steering wheel is used when remote control is operated, solving the problem of vehicle snake caused by the difficulty of controlling the return amount of the steering wheel of the traditional baby carriage; but the proficiency of mechanical operation is different, which affects the accuracy of steering control and the safety of use.

[0004] Therefore, there is a need for a steering precision control system of an electric baby carriage and an electric baby carriage applying the same. SUMMARY

[0005] The present application provides a steering precision control system of an electric baby carriage and an electric baby carriage applying the same, which obtains a steering prediction value of the electric baby carriage by using a steering precision control prediction model, and controls the power supply of the steering drive assembly of the electric baby carriage according to the comparison result of the steering prediction value and the steering threshold value, so as to realize the steering precision control of the electric baby carriage, improve the precision and safety of the steering control of the electric baby carriage, and enhance the use function and safety function of the electric baby carriage.

[0006] The present application provides a steering precision control system of an electric baby carriage and an electric baby carriage applying the same, which comprises:

[0007] The steering test data acquisition module is configured to acquire steering control test data of the electric stroller.

[0008] The steering precision control prediction model construction module is configured to construct a steering precision control prediction model for predicting the steering direction of the electric stroller based on the steering control test data.

[0009] The steering precision control working module is configured to obtain a steering prediction value of the electric stroller based on the steering precision control prediction model, and control the power supply of the steering drive assembly of the electric stroller in segments according to the comparison result of the steering prediction value and a steering threshold value, so as to realize the steering precision control of the electric stroller.

[0010] Further, the steering test data acquisition module includes an electric stroller steering wheel rotation data acquisition unit, an electric stroller wheel steering data acquisition unit, and a steering control test data summarizing unit.

[0011] The electric stroller steering wheel rotation data acquisition unit is configured to acquire rotation direction data and rotation angle data in the rotation direction of the electric stroller steering wheel.

[0012] The electric stroller wheel steering data acquisition unit is configured to acquire steering angle data of the electric stroller wheel corresponding to the rotation angle data.

[0013] The steering control test data summarizing unit is configured to filter a plurality of sets of rotation angle data and a plurality of sets of steering angle data, and summarize the steering control test data.

[0014] Further, the electric stroller steering wheel rotation data acquisition unit further includes a rotation direction data acquisition subunit.

[0015] The rotation direction data acquisition subunit is configured to acquire an initial trend direction of the steering wheel rotation based on a direction sensor arranged on the steering wheel, acquire an initial force value and a first force value of the drive assembly by using a sensor, the first force value being a force value of the drive assembly acquired at a preset time interval, and determine the initial trend direction as the rotation direction and acquire the rotation direction data if the initial force value is greater than a preset force value threshold and the first force value is greater than the initial force value; otherwise, the rotation direction data is acquired after the initial trend direction is determined as the rotation direction.

[0016] Further, the steering precision control prediction model construction module includes a data set generation unit, a model training unit, and a model testing unit.

[0017] The data set generation unit is configured to acquire a data training set and a data testing set based on the steering control test data.

[0018] The model training unit is configured to train the steering precision control prediction model by using a data training set, and output a steering angle prediction value of the electric stroller wheel by inputting the steering angle data.

[0019] The model testing unit is configured to test the steering precision control prediction model by using a data testing set, and obtain a steering precision control prediction model that meets a preset requirement.

[0020] Further, the steering precision control working module comprises a control signal generation unit and a power supply control unit.

[0021] The control signal generation unit is configured to obtain a plurality of steering angle prediction values of the electric stroller based on the steering precision control prediction model, set a plurality of steering angle threshold values and a plurality of steering angle intervals according to the maximum steering angle value of the electric stroller wheel, compare the steering angle prediction value with the steering angle threshold value, generate a first control signal if the steering angle prediction value is greater than the steering angle threshold value, and monitor the actual steering angle value of the electric stroller wheel in real time, and generate a second control signal if the actual steering angle value of the electric stroller wheel reaches the steering angle threshold value.

[0022] The power supply control unit is configured to interrupt the power supply to the steering drive assembly of the electric stroller based on the first control signal, and restore the power supply to the steering drive assembly of the electric stroller based on the second control signal.

[0023] Further, the power supply control unit comprises a control command generation subunit and a power supply control subunit.

[0024] The control command generation subunit is configured to monitor the first control signal or the second control signal based on the microprocessor of the electric stroller, and generate a first control command or a second control command according to the first control signal or the second control signal.

[0025] The power supply control subunit is configured to perform circuit breaking control on the power supply control circuit of the steering drive assembly according to the first control command, to interrupt the power supply, and perform on-off control on the power supply control circuit of the steering drive assembly according to the second control command, to restore the power supply.

[0026] Further, the power supply control unit further comprises a steering angle monitoring control subunit.

[0027] The steering angle monitoring control subunit is configured to acquire inertial motion data of the electric child stroller wheel by using an inertial sensor, wherein the inertial motion data is an inertial steering angle value of the electric child stroller wheel after power supply to the steering drive assembly is interrupted; if the inertial steering angle value reaches a steering angle threshold value, a third control command is generated by a microprocessor, and the control circuit of the electric child stroller wheel is controlled to be disconnected to brake the electric child stroller according to the third control command; and after the power supply to the steering drive assembly is restored, the control circuit of the electric child stroller wheel is controlled to be connected.

[0028] Further, the intelligent terminal control module is further included, which is configured to remotely control the electric child stroller to steer accurately by using a Bluetooth communication technology through an APP or a small program installed on a mobile terminal.

[0029] The mobile terminal development setting unit is configured to develop and design the APP or the small program installed on the mobile terminal, and control the steering of the electric child stroller through a Bluetooth communication assembly installed on the electric child stroller; the functions of the APP or the small program include one or more of displaying a steering angle, displaying a travel speed, providing a steering voice reminder, displaying a battery capacity, providing a steering fault alarm, providing one-key remote control, providing remote control of power steering, and setting a steering angle threshold value.

[0030] The remote control accurate steering implementation unit is configured to assist the electric child stroller to steer accurately by using the APP or the small program during use of the electric child stroller.

[0031] Further, the circuit monitoring and protection module is further included, which is configured to monitor and acquire working state data of circuit assemblies of the electric child stroller during interruption and restoration of power supply to the steering drive assembly, and evaluate a risk degree of abnormality of the circuit assemblies based on preset circuit assembly service life evaluation conditions, and provide a warning reminder when a warning condition is reached; the circuit monitoring and protection module includes a circuit working state data acquisition unit and a circuit working risk warning unit.

[0032] The circuit working state data acquisition unit is configured to monitor and acquire working state data of circuit assemblies of the electric child stroller during interruption and restoration of power supply to the steering drive assembly; the circuit assembly working state data includes first working state data of a power supply control circuit of the steering drive assembly and second working state data of a plurality of first circuit assemblies other than the power supply control circuit, which are acquired according to a preset circuit working state parameter acquisition template.

[0033] The circuit operation risk early warning unit is used for evaluating the risk degree of the abnormality of the power supply control circuit and the first circuit component based on the preset circuit component service life evaluation condition, the first working state data and the second working state data, and displaying a risk early warning reminder through an APP or a mini program when a preset risk degree level is reached.

[0034] The electrically-powered baby carriage comprises the steering precision control system.

[0035] Compared with the prior art, the present application has the following advantages and beneficial effects: the steering prediction value of the electrically-powered baby carriage is obtained by using the steering precision control prediction model, and the power supply of the steering drive assembly of the electrically-powered baby carriage is controlled in sections according to the comparison result of the steering prediction value and the steering threshold value, so that the steering precision control of the electrically-powered baby carriage is realized, the steering control precision and safety of the electrically-powered baby carriage are improved, and the use function and safety function of the electrically-powered baby carriage are enhanced.

[0036] Other features and advantages of the present application will be set forth in the following description, and in part will become apparent to those skilled in the art from the description, or can be learned by practice of the present application. The objects and other advantages of the present application will be realized and attained by the structure particularly pointed out in the written description and claims.

[0037] The technical solutions of the present application will be further described in detail below with the help of the accompanying drawings and examples. BRIEF DESCRIPTION OF DRAWINGS

[0038] The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application, and are used to explain the present application together with the embodiments of the present application, and do not constitute a limitation on the present application. In the drawings:

[0039] Figure 1 The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application, and are used to explain the present application together with the embodiments of the present application, and do not constitute a limitation on the present application. In the drawings:

[0040] Figure 2 The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application, and are used to explain the present application together with the embodiments of the present application, and do not constitute a limitation on the present application. In the drawings:

[0041] Figure 3 The accompanying drawings are included to provide a further understanding of the present application, and constitute a part of the specification, illustrate the present application, and are used to explain the present application together with the embodiments of the present application, and do not constitute a limitation on the present application. In the drawings: DETAILED DESCRIPTION

[0042] The preferred embodiments of the present application will be described below in conjunction with the accompanying drawings, and it should be understood that the preferred embodiments described herein are only used to illustrate and explain the present application, and do not constitute a limitation on the present application.

[0043] The application provides a steering precision control system of an electric stroller and an electric stroller applying the system, as shown in the accompanying drawings, comprising: Figure 1

[0044] A steering test data acquisition module is configured to acquire steering control test data of the electric stroller.

[0045] A steering precision control prediction model construction module is configured to construct a steering precision control prediction model for predicting the steering direction of the electric stroller based on the steering control test data.

[0046] A steering precision control working module is configured to obtain a steering prediction value of the electric stroller based on the steering precision control prediction model, and control the power supply of the steering drive assembly of the electric stroller in sections according to the comparison result of the steering prediction value and a steering threshold value, so as to realize the steering precision control of the electric stroller.

[0047] The working principle of the above technical solution is that the steering test data acquisition module is configured to acquire steering control test data of the electric stroller.

[0048] The steering precision control prediction model construction module is configured to construct a steering precision control prediction model for predicting the steering direction of the electric stroller based on the steering control test data.

[0049] The steering precision control working module is configured to obtain a steering prediction value of the electric stroller based on the steering precision control prediction model, and control the power supply of the steering drive assembly of the electric stroller in sections according to the comparison result of the steering prediction value and a steering threshold value, so as to realize the steering precision control of the electric stroller.

[0050] The beneficial effects of the above technical solution are that by using the steering precision control prediction model, the steering prediction value of the electric stroller is obtained, and the power supply of the steering drive assembly of the electric stroller is controlled in sections according to the comparison result of the steering prediction value and a steering threshold value, so as to realize the steering precision control of the electric stroller, improve the precision and safety of the steering control of the electric stroller, and enhance the use function and safety function of the electric stroller.

[0051] In one embodiment, as shown in the accompanying drawings, Figure 2 The steering test data acquisition module comprises an electric stroller steering wheel rotation data acquisition unit, an electric stroller wheel steering data acquisition unit and a steering control test data summary unit.

[0052] The electric stroller steering wheel rotation data acquisition unit is configured to acquire the rotation direction data and the rotation angle data in the rotation direction of the electric stroller steering wheel.

[0053] The electric stroller wheel steering data acquisition unit is configured to acquire the steering angle data of the electric stroller wheel corresponding to the rotation angle data.​

[0054] The steering control test data aggregation unit is configured to filter a plurality of sets of the rotation angle data and a plurality of sets of the steering angle data, and aggregate the steering control test data.

[0055] The working principle of the above technical solution is that the steering test data acquisition module includes an electric stroller steering wheel rotation data acquisition unit, an electric stroller wheel steering data acquisition unit, and a steering control test data aggregation unit.

[0056] The electric stroller steering wheel rotation data acquisition unit is configured to acquire the rotation direction data of the electric stroller steering wheel and the rotation angle data in the rotation direction.

[0057] The electric stroller wheel steering data acquisition unit is configured to acquire the steering angle data of the electric stroller wheel corresponding to the rotation angle data.

[0058] The steering control test data aggregation unit is configured to filter a plurality of sets of the rotation angle data and a plurality of sets of the steering angle data, and aggregate the steering control test data.

[0059] The above technical solution has the beneficial effect that the scheme provided in the embodiment ensures the comprehensiveness of the steering control test data by acquiring the rotation direction data of the electric stroller steering wheel and the rotation angle data in the rotation direction.

[0060] In one embodiment, the electric stroller steering wheel rotation data acquisition unit further includes a rotation direction data acquisition subunit.

[0061] The rotation direction data acquisition subunit is configured to acquire the initial trend direction of the steering wheel rotation according to a direction sensor arranged on the steering wheel, acquire the initial force value and the first force value of the driving assembly using a sensor, the first force value being the force value of the driving assembly acquired at a preset time interval, and determine the initial trend direction as the rotation direction and acquire the rotation direction data if the initial force value is greater than a preset force value threshold and the first force value is greater than the initial force value; otherwise, the rotation direction data is acquired after the initial trend direction is determined as the rotation direction.

[0062] The working principle of the above technical solution is that the electric stroller steering wheel rotation data acquisition unit further includes a rotation direction data acquisition subunit.

[0063] The rotation direction data acquisition subunit is configured to acquire an initial trend direction of rotation of the steering wheel according to a direction sensor arranged on the steering wheel, acquire an initial force value and a first force value of the driving assembly by using a sensor, the first force value being a force value of the driving assembly acquired according to a preset time interval, and if the initial force value is greater than a preset force value threshold and the first force value is greater than the initial force value, determine the initial trend direction as the rotation direction and acquire the rotation direction data, otherwise, after the initial trend direction is determined as the rotation direction, the rotation direction data is acquired again.

[0064] The above technical solution has the beneficial effects that: by using the scheme provided in the embodiment, the rotation direction data can be avoided to be obtained incorrectly, and the correctness of the rotation direction data can be ensured.

[0065] In one embodiment, as shown in FIG. 1, the steering precision control prediction model construction module includes a data set generation unit, a model training unit and a model testing unit. Figure 3

[0066] The data set generation unit is configured to acquire a data training set and a data testing set according to steering control test data.

[0067] The model training unit is configured to train the steering precision control prediction model by using the data training set, and output a steering angle prediction value of the electric child car wheel by inputting the rotation angle data.

[0068] The model testing unit is configured to test the steering precision control prediction model by using the data testing set, and obtain a steering precision control prediction model that meets a preset requirement.

[0069] The working principle of the above technical solution is that: the steering precision control prediction model construction module includes a data set generation unit, a model training unit and a model testing unit.

[0070] The data set generation unit is configured to acquire a data training set and a data testing set according to steering control test data.

[0071] The model training unit is configured to train the steering precision control prediction model by using the data training set, and output a steering angle prediction value of the electric child car wheel by inputting the rotation angle data.

[0072] The model testing unit is configured to test the steering precision control prediction model by using the data testing set, and obtain a steering precision control prediction model that meets a preset requirement.

[0073] ​The beneficial effects of the above technical solutions are: by using the scheme provided in the embodiment, the steering precision control prediction model that meets the preset requirements is obtained through information testing, which can ensure the accuracy of the steering precision control prediction model and ensure the function of the model.

[0074] In one embodiment, the steering precision control working module includes a control signal generation unit and a power supply control unit.

[0075] The control signal generation unit is configured to obtain a plurality of steering angle prediction values of the electric child car based on the steering precision control prediction model, set a plurality of steering angle threshold values and a plurality of steering angle intervals according to the maximum steering angle value of the electric child car wheel, compare the steering angle prediction value with the steering angle threshold value, generate a first control signal if the steering angle prediction value is greater than the steering angle threshold value, and monitor the actual steering angle value of the electric child car wheel in real time to generate a second control signal if the actual steering angle value of the electric child car wheel reaches the steering angle threshold value.

[0076] The power supply control unit is configured to interrupt the power supply to the steering drive assembly of the electric child car based on the first control signal, and resume the power supply to the steering drive assembly of the electric child car based on the second control signal.

[0077] The working principle of the above technical solutions is that the steering precision control working module includes a control signal generation unit and a power supply control unit.

[0078] The control signal generation unit is configured to obtain a plurality of steering angle prediction values of the electric child car based on the steering precision control prediction model, set a plurality of steering angle threshold values and a plurality of steering angle intervals according to the maximum steering angle value of the electric child car wheel, compare the steering angle prediction value with the steering angle threshold value, generate a first control signal if the steering angle prediction value is greater than the steering angle threshold value, and monitor the actual steering angle value of the electric child car wheel in real time to generate a second control signal if the actual steering angle value of the electric child car wheel reaches the steering angle threshold value.

[0079] The power supply control unit is configured to interrupt the power supply to the steering drive assembly of the electric child car based on the first control signal, and resume the power supply to the steering drive assembly of the electric child car based on the second control signal.

[0080] The beneficial effects of the above technical solutions are: by using the scheme provided in the embodiment, the control signal is generated based on the comparison result of the steering angle prediction value and the steering angle threshold value, and the power supply to the steering drive assembly of the electric child car is interrupted and restored, which can realize precise control of steering.

[0081] In one embodiment, the power supply control unit comprises a control command generation subunit and a power supply control subunit;

[0082] The control command generation subunit is configured to acquire the first control signal or the second control signal based on the microprocessor of the electrically powered stroller, and generate the first control command or the second control command according to the first control signal or the second control signal.

[0083] The power supply control subunit is configured to perform circuit breaking control on the power supply control circuit of the steering drive assembly according to the first control command, so as to interrupt the power supply, and perform circuit closing control on the power supply control circuit of the steering drive assembly according to the second control command, so as to restore the power supply.

[0084] The working principle of the above technical solution is that the power supply control unit comprises a control command generation subunit and a power supply control subunit;

[0085] The control command generation subunit is configured to acquire the first control signal or the second control signal based on the microprocessor of the electrically powered stroller, and generate the first control command or the second control command according to the first control signal or the second control signal.

[0086] The power supply control subunit is configured to perform circuit breaking control on the power supply control circuit of the steering drive assembly according to the first control command, so as to interrupt the power supply, and perform circuit closing control on the power supply control circuit of the steering drive assembly according to the second control command, so as to restore the power supply.

[0087] The beneficial effects of the above technical solution are that, by converting the control signal into the control command and performing circuit breaking and circuit closing control on the power supply control circuit of the steering drive assembly, the control of the power supply is realized.

[0088] In one embodiment, the power supply control unit further comprises a steering angle monitoring control subunit;

[0089] The steering angle monitoring control subunit is configured to acquire inertial motion data of the wheels of the electrically powered stroller by using an inertial sensor, wherein the inertial motion data is an inertial steering angle value of the wheels of the electrically powered stroller after the power supply to the steering drive assembly is interrupted; if the inertial steering angle value reaches a steering angle threshold value, a third control command is generated by the microprocessor, and the control circuit of the wheels of the electrically powered stroller is controlled to be broken by the third control command, so as to brake the electrically powered stroller; and after the power supply to the steering drive assembly is restored, the control circuit of the wheels of the electrically powered stroller is controlled to be connected.

[0090] The working principle of the above technical solution is that the power supply control unit further comprises a steering angle monitoring control subunit;

[0091] The steering angle monitoring control subunit is configured to acquire inertial motion data of the electric child stroller wheel by using an inertial sensor, the inertial motion data being an inertial steering angle value of the electric child stroller wheel after power supply to the steering drive assembly is interrupted, and the third control command being generated by the microprocessor if the inertial steering angle value reaches a steering angle threshold value, and the control circuit of the electric child stroller wheel being controlled to be disconnected to brake the electric child stroller according to the third control command, and the control circuit of the electric child stroller wheel being controlled to be connected after the power supply to the steering drive assembly is restored.

[0092] The technical scheme has the beneficial effects that: by monitoring and acquiring the inertial motion data of the electric child stroller wheel, the accuracy and efficiency of precise steering control can be further improved.

[0093] In one embodiment, the technical scheme further includes a smart terminal control module configured to remotely control the electric child stroller to steer precisely by using a Bluetooth communication technology through an APP or a mini program installed on a mobile terminal.

[0094] The mobile terminal development setting unit is configured to develop and design the APP or the mini program installed on the mobile terminal, and control the steering of the electric child stroller through a Bluetooth communication assembly installed on the electric child stroller.

[0095] The remote precise steering implementation unit is configured to assist the electric child stroller to steer precisely by using the APP or the mini program during use of the electric child stroller.

[0096] The technical scheme has the beneficial effects that: by monitoring and acquiring the inertial motion data of the electric child stroller wheel, the accuracy and efficiency of precise steering control can be further improved.

[0097] The mobile terminal development setting unit is configured to develop and design the APP or the mini program installed on the mobile terminal, and control the steering of the electric child stroller through a Bluetooth communication assembly installed on the electric child stroller.

[0098] The remote precise steering implementation unit is configured to assist the electric child stroller to steer precisely by using the APP or the mini program during use of the electric child stroller.

[0099] The beneficial effects of the above technical solutions are: by using the scheme provided in the embodiment, the APP or the app is used to assist the remote control of the electric stroller to achieve precise steering during the use of the electric stroller, and the intelligent control level of the electric stroller can be improved, and the electric stroller can be controlled safely and intelligently.

[0100] In one embodiment, a circuit monitoring and protection module is further included for monitoring and acquiring the working state data of the circuit components of the electric stroller during the interruption and resumption of the power supply to the steering drive assembly, and evaluating the risk degree of abnormality of the circuit components based on preset circuit component service life evaluation conditions, and giving a warning reminder when the warning condition is reached; the circuit monitoring and protection module includes a circuit working state data acquisition unit and a circuit working risk warning unit.

[0101] The circuit working state data acquisition unit is configured to monitor and acquire the working state data of the circuit components of the electric stroller during the interruption and resumption of the power supply to the steering drive assembly; the circuit component working state data includes first working state data of the power supply control circuit of the steering drive assembly and second working state data of a plurality of first circuit components other than the power supply control circuit, which are acquired according to a preset circuit working state parameter acquisition template.

[0102] The circuit working risk warning unit is configured to evaluate the risk degree of abnormality of the power supply control circuit and the first circuit components based on the first working state data and the second working state data according to preset circuit component service life evaluation conditions, and display a risk warning reminder through the APP or the app when the preset risk degree level is reached.

[0103] The working principle of the above technical solutions is: a circuit monitoring and protection module is further included for monitoring and acquiring the working state data of the circuit components of the electric stroller during the interruption and resumption of the power supply to the steering drive assembly, and evaluating the risk degree of abnormality of the circuit components based on preset circuit component service life evaluation conditions, and giving a warning reminder when the warning condition is reached; the circuit monitoring and protection module includes a circuit working state data acquisition unit and a circuit working risk warning unit.

[0104] The circuit working state data acquisition unit is configured to monitor and acquire the working state data of the circuit components of the electric stroller during the interruption and resumption of the power supply to the steering drive assembly; the circuit component working state data includes first working state data of the power supply control circuit of the steering drive assembly and second working state data of a plurality of first circuit components other than the power supply control circuit, which are acquired according to a preset circuit working state parameter acquisition template.

[0105] The circuit operation risk early warning unit is configured to evaluate the risk degree of the power supply control circuit and the first circuit component based on the preset circuit component service life evaluation condition and the first and second operation state data, and display a risk early warning reminder through an APP or a mini program when a preset risk degree level is reached.

[0106] The technical scheme has the beneficial effects that: the scheme provided in the embodiment can monitor the operation state of the circuit and timely issue a safety risk early warning reminder, so that safety hazards can be found in time and the use safety of the electric child car is ensured.

[0107] The electric child car comprises the steering precision control system.

[0108] The technical scheme has the beneficial effects that: the scheme provided in the embodiment can monitor the operation state of the circuit and timely issue a safety risk early warning reminder, so that safety hazards can be found in time and the use safety of the electric child car is ensured.

[0109] The technical scheme has the beneficial effects that: the scheme provided in the embodiment can monitor the operation state of the circuit and timely issue a safety risk early warning reminder, so that safety hazards can be found in time and the use safety of the electric child car is ensured.

[0110] Obviously, those skilled in the art can make various modifications and variations to the present application without departing from the spirit and scope of the present application. Thus, if these modifications and variations of the present application belong to the scope of the claims of the present application and their equivalents, the present application is also intended to include these modifications and variations.

Claims

1. A precise steering control system for an electric children's vehicle, characterized in that, The application relates to a method for realizing accurate steering control of an electrically-powered baby carriage. The method comprises the following steps: a steering test data acquisition module is used to acquire steering control test data of the electrically-powered baby carriage; a steering accurate control prediction model construction module is used to construct a steering accurate control prediction model for predicting the steering direction of the electrically-powered baby carriage based on the steering control test data; 2. The precision control system for steering of a powered stroller of claim 1, wherein, a steering accurate control working module is used to obtain a steering prediction value of the electrically-powered baby carriage based on the steering accurate control prediction model, and to control the power supply of a steering drive assembly of the electrically-powered baby carriage in segments according to the comparison result of the steering prediction value and a steering threshold value, so as to realize accurate steering control of the electrically-powered baby carriage. The steering test data acquisition module comprises an electrically-powered baby carriage steering wheel rotation data acquisition unit, an electrically-powered baby carriage wheel steering data acquisition unit and a steering control test data summary unit. The electrically-powered baby carriage steering wheel rotation data acquisition unit is used to acquire rotation direction data and rotation angle data in the rotation direction of the steering wheel of the electrically-powered baby carriage. The electrically-powered baby carriage wheel steering data acquisition unit is used to acquire steering angle data of the wheel of the electrically-powered baby carriage corresponding to the rotation angle data.

3. The precision control system for steering of a powered stroller of claim 2, wherein, The steering control test data summary unit is used to screen a plurality of groups of rotation angle data and a plurality of groups of steering angle data, and to summarize the steering control test data. The electrically-powered baby carriage steering wheel rotation data acquisition unit comprises a rotation direction data acquisition subunit. The rotation direction data acquisition subunit is used to acquire the initial trend direction of the steering wheel rotation according to a direction sensor arranged on the steering wheel, and to acquire the initial force value and the first force value of the drive assembly by using the sensor. The first force value is the force value of the drive assembly acquired according to a preset time interval. If the initial force value is greater than a preset force value threshold value, and the first force value is greater than the initial force value, the initial trend direction is determined as the rotation direction, and the rotation direction data is acquired.

4. The precision control system for steering of a powered stroller of claim 2, wherein, Otherwise, the rotation direction data is acquired after the initial trend direction is determined as the rotation direction. The steering accurate control prediction model construction module comprises a data set generation unit, a model training unit and a model testing unit. The data set generation unit is used to acquire a data training set and a data testing set according to the steering control test data. The model training unit is used to train the steering accurate control prediction model by using the data training set, and to output the steering angle prediction value of the wheel of the electrically-powered baby carriage by inputting the rotation angle data.

5. The precision control system for steering of a powered stroller of claim 4, wherein, The model testing unit is used to test the steering accurate control prediction model by using the data testing set, and to acquire the steering accurate control prediction model meeting the preset requirement. The steering accurate control working module comprises a control signal generation unit and a power supply control unit. The control signal generation unit is used to acquire a plurality of steering angle prediction values of the electrically-powered baby carriage based on the steering accurate control prediction model, to set a plurality of steering angle threshold values and a plurality of steering angle intervals according to the maximum steering angle value of the wheel of the electrically-powered baby carriage, to compare the size of the steering angle prediction value and the steering angle threshold value, to generate a first control signal if the steering angle prediction value is greater than the steering angle threshold value, and to generate a second control signal by monitoring the actual steering angle value of the wheel of the electrically-powered baby carriage in real time if the actual steering angle value of the wheel of the electrically-powered baby carriage reaches the steering angle threshold value. The power supply control unit is configured to interrupt the power supply to the steering drive assembly of the electric stroller based on a first control signal. The power supply control unit is configured to resume the power supply to the steering drive assembly of the electric stroller based on a second control signal.

6. The precision control system for steering of a powered stroller of claim 5, wherein, The power supply control unit comprises a control command generation subunit and a power supply control subunit. The control command generation subunit is configured to obtain the first control signal or the second control signal based on the microprocessor of the electric stroller, and generate a first control command or a second control command according to the first control signal or the second control signal. The power supply control subunit is configured to perform circuit breaking control on the power supply control circuit of the steering drive assembly according to the first control command, so as to interrupt the power supply, and perform circuit closing control on the power supply control circuit of the steering drive assembly according to the second control command, so as to resume the power supply.

7. The precision control system for steering of a powered stroller of claim 3, wherein, The power supply control unit comprises a steering angle monitoring control subunit. The steering angle monitoring control subunit is configured to obtain inertial motion data of the wheels of the electric stroller by using an inertial sensor, wherein the inertial motion data is an inertial steering angle value of the wheels of the electric stroller after the power supply to the steering drive assembly is interrupted. If the inertial steering angle value reaches a steering angle threshold value, a third control command is generated by the microprocessor, and the control circuit of the wheels of the electric stroller is controlled to be broken according to the third control command, so as to brake the electric stroller; and after the power supply to the steering drive assembly is resumed, the control circuit of the wheels of the electric stroller is controlled to be connected.

8. The precision control system for steering of a powered stroller of claim 5, wherein, The intelligent terminal control module is further configured to remotely control the electric stroller to precisely steer by using a Bluetooth communication technology through an APP or a program installed on a mobile terminal; the intelligent terminal control module comprises a mobile terminal development setting unit and a remote precise steering implementation unit. The mobile terminal development setting unit is configured to develop and design the APP or the program installed on the mobile terminal, and control the steering of the electric stroller through a Bluetooth communication assembly installed on the electric stroller; the functions of the APP or the program comprise one or more of displaying a steering angle, displaying a travel speed, providing a steering voice reminder, displaying a battery capacity, providing a steering fault alarm, one-key remote control, remote power-assisted steering, and setting a steering angle threshold value. The remote precise steering implementation unit is configured to assist the remote electric stroller to precisely steer by using the APP or the program during use of the electric stroller.

9. The precision control system for steering of a powered stroller of claim 8, wherein, The circuit monitoring and protection module is further configured to monitor and obtain working state data of circuit assemblies of the electric stroller during interruption and resumption of the power supply to the steering drive assembly, and evaluate the risk degree of abnormality of the circuit assemblies based on preset circuit assembly service life evaluation conditions, and provide a warning reminder when a warning condition is reached. The circuit monitoring and protection module comprises a circuit working state data acquisition unit and a circuit working risk warning unit. The circuit working state data acquisition unit is configured to monitor and acquire the working state data of the circuit components of the electric stroller during the interruption and resumption of the power supply of the steering driving assembly; the circuit component working state data includes first working state data of the power supply control circuit of the steering driving assembly and second working state data of a plurality of first circuit components other than the power supply control circuit, which are acquired according to a preset circuit working state parameter acquisition template; The circuit working risk early warning unit is configured to evaluate the risk degree of the abnormality of the power supply control circuit and the first circuit components based on the first working state data and the second working state data according to a preset circuit component service life evaluation condition, and display a risk early warning reminder through an APP or a mini program when a preset risk degree level is reached.

10. An electrically powered stroller, characterized by The steering precision control system as claimed in any one of claims 1 to 9.

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