CN115775460A - Parking detection device, method, system and storage medium - Google Patents
Parking detection device, method, system and storage medium Download PDFInfo
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Abstract
The invention discloses a parking detection device, a method, a system and a storage medium, wherein the device comprises the parking detection device, the parking detection device comprises a passive inductor and a ground active device on a vehicle, the vehicle is provided with a first space for accommodating the passive inductor, and the ground active device is provided with a second space for parking the vehicle; the ground active equipment is provided with a signal processing unit and is used for transmitting signals, detecting signals fed back by the passive inductor and judging whether the vehicle is parked in the second space or not so as to judge whether the vehicle is parked in a qualified mode or not. The invention solves the problems of higher error rate, low precision and high cost of the related technology for monitoring the parking of the vehicle.
Description
Technical Field
The invention belongs to the technical field of intelligent travel, and particularly relates to a parking detection device, method and system and a storage medium.
Background
Shared vehicles such as a shared bicycle, a shared electric bicycle and a shared automobile become important components of the intelligent travel system, and convenience is brought to travel of people. However, as the problems of random parking and disordered parking of shared vehicles in cities are increasingly aggravated, the development of the shared vehicles is greatly restricted.
In order to solve the above problems, the current solution is to monitor whether the parking position and the parking direction of the vehicle meet the specifications through cooperation of the ground device and multiple sets of sensors in the vehicle. However, according to the schemes, the error rate of data matching of the identification sensor is high, the detection precision is low, the condition that a vehicle cannot return or stop is not standard is caused, and the cost is high.
In order to solve the problems of high error rate, low precision and high cost of monitoring vehicle parking, a parking detection device, a method, a system and a storage medium are provided.
Disclosure of Invention
The invention provides a parking detection device, a parking detection method, a parking detection system and a storage medium, which are used for at least solving the problems of high error rate, low precision and high cost of monitoring parking of a vehicle in the related technology.
According to one embodiment of the present invention, there is provided a parking detection apparatus comprising a passive sensor on a vehicle, a ground active device; the vehicle is provided with a first space for accommodating the passive inductor, and the ground active equipment is provided with a second space for parking the vehicle; the second space is a set space with longitude and latitude, direction and shape; when the vehicle is parked on the ground active device, the projection of the first space on the second space has asymmetry relative to the center of the second space;
the ground active equipment is provided with a signal processing unit which is used for transmitting signals and detecting signals fed back by the passive inductor and judging whether the vehicle is parked in the second space or not according to the signal characteristics and/or the signal loss rate and/or the signal direction deviation rate fed back by the passive inductor, if so, the vehicle is judged to be parked in a compliance state, and otherwise, the vehicle is judged to be parked in a non-compliance state.
Optionally, the first space comprises a vehicle underbody projection and/or a vehicle underbody depression; the second space includes a recessed space for receiving a raised portion of the vehicle's underbody and/or a raised space for receiving a recessed portion of the vehicle's underbody.
Optionally, the recessed space is any one or more of a spherical recess or a hemispherical recess or an arc recess or a cylindrical recess or a conical recess or a cube recess or a rectangular recess or a parallelogram recess or a rhombus recess or a polygonal recess or a spiral recess or a stepped recess or an irregularly shaped recess matched with the vehicle bottom convex part; the convex space is any one or combination of more than one of spherical convex, hemispherical convex, arc-shaped convex, cylindrical convex, conical convex, cubic convex, rectangular convex, parallelogram convex, rhombic convex, polygonal convex, spiral convex, stepped convex and irregular convex matched with the concave part of the bottom of the vehicle.
Optionally, the step of judging whether the vehicle is parked in the second space according to the signal characteristics and/or the signal loss rate and/or the signal direction deviation rate fed back by the passive inductor comprises the steps of:
calculating a feedback signal matching value according to the signal intensity value fed back by the passive inductor and/or the feedback signal angle;
calculating a signal loss rate according to the difference and/or ratio of the received signal intensity fed back by the passive inductor and the transmitted signal intensity, and calculating a signal loss matching value according to the signal loss rate;
calculating a signal direction deviation ratio according to the difference and/or the difference proportion between the currently received signal direction fed back by the passive inductor and the previous signal direction fed back, and calculating a signal direction matching value;
and calculating a compliance matching value according to the feedback signal matching value and/or the signal loss matching value and/or the signal direction matching value, and judging whether the vehicle is parked in the second space or not according to the compliance matching value.
Optionally, the ground active device has a shielding structure inside, and the relative positions of the shielding structure and the signal processing unit include a position where the shielding structure completely shields the signal processing unit, a position where the shielding structure completely exposes the signal processing unit, and a position where the shielding structure partially exposes the signal processing unit.
Optionally, the shielding structure includes any one or combination of a magnetic shielding structure or a non-magnetic shielding structure or an electromagnetic shielding structure or other structures having a signal shielding function.
Optionally, the relative position of the signal shielding structure and the signal processing unit is adjusted by a magnetic structure and/or a mechanical lever structure and/or a mechanical pressing structure and/or a mechanical sliding structure.
Optionally, if the vehicle is parked in the second space, the relative position of the signal shielding structure and the signal processing unit is at a position where the shielding structure completely exposes the signal processing unit, and signals transmitted and received by the signal processing unit are not blocked; otherwise, the relative position of the signal shielding structure and the signal processing unit is moved to the position where the signal processing unit is completely shielded by the shielding structure or the position where the signal processing unit is partially exposed by the shielding structure, and the signal transmitted and received by the signal processing unit is completely shielded or partially shielded by the shielding structure.
Optionally, the transmission power of the signal transmitted by the signal processing unit is calculated according to the distance between the first space and the second space and/or the signal receiving sensitivity and/or the shielding index of the shielding structure and/or the feedback signal strength index.
According to another embodiment of the present invention, there is provided a parking detection method including:
calculating the transmitting power of the signal transmitted by the signal processing unit according to the distance between the first space and the second space and/or the signal receiving sensitivity and/or the shielding index of the shielding structure and/or the feedback signal strength index;
the active equipment transmits signals according to the calculated transmitting power when the vehicle is turned on;
after receiving the signal, the passive inductor in the vehicle excites a feedback signal and is received by a signal processing unit of the ground active equipment;
and the signal processing unit judges whether the vehicle is parked in the second space or not according to the signal characteristics and/or the signal loss rate and/or the signal direction deviation rate fed back by the passive inductor, if so, the vehicle is judged to be parked in a compliance manner, and if not, the vehicle is judged to be parked in a non-compliance manner.
According to another embodiment of the present invention, a computer-readable storage medium is provided, which stores a computer program for electronic data exchange, wherein the computer program causes a computer to perform the above-mentioned method.
According to another embodiment of the present invention, there is provided a parking detection system including:
a signal processing unit; the signal is used for transmitting a signal and detecting the feedback of the passive inductor;
a memory;
and
one or more programs, wherein the one or more programs are stored in a memory and configured to be executed by the signal processing unit, the programs causing a computer to perform the above-described method.
The parking detection device, method, system and storage medium of the invention have the advantages that:
(1) The projection of the first space on the second space is asymmetric relative to the center of the second space, and the difference of feedback signals during the compliant parking and the non-compliant parking can be increased, so that whether the vehicle is in compliant parking or not is judged according to the feedback signal characteristics and/or the signal loss rate and/or the signal direction deviation rate.
(2) The inside shielding structure that has of place tablet, the different positions that the vehicle parked influence shielding structure's position, the degree of sheltering from to the signal through shielding structure increases the difference of feedback signal when the compliance is parked and the non-compliance is parked, compares the technical scheme that needs the sensor cooperation among a plurality of sensors and the vehicle to realize fixed point and directional parking among the traditional ground device, effectively reduces data processing's complexity and data error rate, improves the discernment degree of accuracy and the recognition speed of fixed point and directional parking.
(3) The method comprises the steps of calculating the transmitting power of a signal processing unit signal according to the distance between a first space and a second space and/or the signal receiving sensitivity and/or the shielding index of a shielding structure and/or the feedback signal strength index, and obtaining more accurate transmitting power from a plurality of angles such as distance, receiving sensitivity, signal coverage and signal attenuation compared with the traditional technical scheme of calculating the transmitting power according to the distance.
(4) The mounted position of the passive inductor on the vehicle is not limited to the heel brace, compares traditional technical scheme at bicycle heel brace bottom installation inductor, not only can effectively reduce the requirement to vehicle structure, reduces the probability that the inductor damaged moreover, effectively improves detection device's life.
Drawings
Fig. 1 is a schematic structural diagram of a ground active device according to a first embodiment of the present invention;
FIG. 2 is a schematic view of the structure of the bottom of the vehicle according to the first embodiment of the present invention;
FIG. 3 is a schematic illustration of the parking relationship of the bottom (foot support) of the vehicle with ground active devices for compliant and non-compliant parking in accordance with an embodiment of the present invention;
fig. 4 is a schematic structural diagram of a ground active device according to a second embodiment of the present invention;
fig. 5 is a flowchart of a parking detection method according to a third embodiment of the present invention;
FIG. 6 is a schematic diagram of a parking detection system according to an embodiment of the present invention;
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the invention.
Embodiment one, a parking detection device
The parking detection device comprises a passive inductor and ground active equipment on a vehicle; the vehicle is provided with a first space for accommodating the passive inductor, and the ground active equipment is provided with a second space for parking the vehicle; the second space is a set space with longitude and latitude, direction and shape; when the vehicle is parked on the ground active device, the projection of the first space on the second space has asymmetry relative to the center of the second space;
the ground active equipment is provided with a signal processing unit which is used for transmitting signals and detecting signals fed back by the passive inductor and judging whether the vehicle is parked in the second space or not according to the signal characteristics and/or the signal loss rate and/or the signal direction deviation rate fed back by the passive inductor, if so, the vehicle is judged to be parked in a compliance state, and otherwise, the vehicle is judged to be parked in a non-compliance state.
A schematic structural diagram of the ground active device of the present embodiment is shown in fig. 1.
In this embodiment, the first space is a space at the bottom of the foothold of the vehicle; the longitude and latitude set in the second space are the longitude and latitude of the position required by the fixed-point parking of the vehicle, the direction set in the second space is the direction required by the directional parking, the deviation value of the longitude and latitude in the compliant parking is not more than 0.1 degrees, and the deviation value of the direction angle is not more than +/-10 degrees (the inclined parking within +/-10 degrees is allowed to be limited).
The overall shape of the ground active device is any one of an oval shape, a rectangular shape, a circular shape or other irregular shapes, and the front face of the ground active device is provided with a second space for parking a vehicle. In this embodiment, the ground active device is an active ground plate device, and the ground plate is not limited.
Optionally, the first space comprises a vehicle underbody projection and/or a vehicle underbody depression; the second space includes a recessed space for receiving a raised portion of the vehicle's underbody and/or a raised space for receiving a recessed portion of the vehicle's underbody. In this embodiment, the convex space and/or the concave space of the ground active device has asymmetry along the horizontal axis according to the direction in which the foot rests are parked in compliance), the concave portion or the convex portion of the vehicle bottom (the foot rests in this embodiment, and in another embodiment, the vehicle bottom may be any one of the wheel hub bottom, the frame bottom, and the seat bottom) is the first space, and the projection of the concave portion or the convex portion of the vehicle bottom on the convex space or the concave space of the ground active device has central asymmetry relative to the convex space or the concave space.
The concave space is any one or more of a spherical concave or a hemispherical concave or an arc concave or a cylindrical concave or a conical concave or a cube concave or a rectangular concave or a parallelogram concave or a rhombus concave or a polygon concave or a spiral concave or a step concave or an irregular concave matched with the convex part of the bottom of the vehicle; the convex space is any one or combination of more than one of spherical convex, hemispherical convex, arc-shaped convex, cylindrical convex, conical convex, cubic convex, rectangular convex, parallelogram convex, rhombic convex, polygonal convex, spiral convex, stepped convex and irregular convex matched with the concave part of the bottom of the vehicle.
As an implementation manner of this embodiment, a schematic structural diagram of a ground active device (a ground plate) is shown in fig. 1, a schematic structural diagram of a vehicle bottom (a bottom of a foot support) is shown in fig. 2, a recessed space 111 is a cylindrical recessed space, i.e. the second space, the position of the recessed space is deviated from a transverse central axis of the ground active device 11, the ground active device recessed space 111 is used for accommodating a bottom protruding portion 121 of the foot support 12, the foot support bottom protruding portion 121 is a cylindrical protrusion matched with the ground active device recessed space, when the foot support 12 is in a compliant parking state, the protruding portion 121 of the foot support can be completely embedded into the ground active device recessed space 111, and at this time, a vertical distance between a signal processing unit 113 in the ground active device and a passive inductor 122 on the foot support is equal to a sum of a shell thickness of the ground active device and a shell thickness of the foot support; when the foot support 12 is not in a non-compliant parking state, the convex part 121 of the foot support is not embedded into the ground plate concave space 111, a gap is formed between the foot support 12 and the front surface of the ground plate 11, and the vertical distance between the signal processing unit 113 in the ground active device and the passive inductor 122 on the foot support is greater than the sum of the thickness of the ground active device shell and the thickness of the foot support shell.
A schematic illustration of the parking relationship of the vehicle underbody (foot support) to the ground active devices for both compliant and non-compliant parking is shown in fig. 3.
Optionally, the passive inductor includes a passive device such as an RFID tag, a bluetooth spike, a magnetic inductor, or the like.
Optionally, the signal processing unit of the ground active device is an active device such as an RFID reader, a bluetooth transceiver, a magnetic induction coil, and the power supply is an external power supply or an internal power supply.
Optionally, the housing of the ground active device is an integrally formed structure and made of PVC.
Optionally, the step of judging whether the vehicle is parked in the second space according to the signal characteristics and/or the signal loss rate and/or the signal direction deviation rate fed back by the passive sensor comprises the steps of:
calculating a feedback signal matching value according to the signal intensity value fed back by the passive inductor and/or the feedback signal angle;
calculating a signal loss rate according to the difference and/or ratio of the received signal strength fed back by the passive inductor and the transmitted signal strength, and calculating a signal loss matching value according to the signal loss rate;
calculating a signal direction deviation ratio according to the difference and/or the difference proportion between the currently received passive inductor feedback signal direction and the previous feedback signal direction, and calculating a signal direction matching value;
and calculating a compliance matching value according to the feedback signal matching value and/or the signal loss matching value and/or the signal direction matching value, and judging whether the vehicle is parked in the second space or not according to the compliance matching value.
In this embodiment, the calculating the feedback signal matching value according to the signal intensity value fed back by the passive inductor and/or the signal angle fed back by the passive inductor is: the method comprises the steps of calculating a feedback signal matching value according to a negative correlation relation between a signal intensity value fed back by a passive inductor and a deviation value of a preset feedback signal intensity range and the feedback signal matching value, calculating a feedback signal matching value according to a negative correlation relation between an included angle between a signal angle fed back by the passive inductor and the preset feedback signal angle and the feedback signal matching value, calculating any one of the feedback signal matching values according to a negative correlation relation between a signal intensity value fed back by the passive inductor and the preset feedback signal intensity range and a negative correlation relation between a signal angle fed back by the passive inductor and the preset feedback signal angle and the feedback signal matching value, and expressing the feedback signal matching value by a variable l.
The method comprises the following steps of calculating a signal loss rate according to the difference and/or the ratio of the received signal strength fed back by the passive inductor to the transmitted signal strength, and calculating a signal loss matching value by using the signal loss rate, wherein the signal loss rate is calculated by the following steps: calculating a signal loss rate according to a difference value between the received signal strength fed back by the passive inductor and the transmitted signal strength, calculating a signal loss matching value according to a negative correlation relationship between the signal loss rate and the signal loss matching value, calculating a signal loss rate according to a ratio of the received signal strength fed back by the passive inductor to the transmitted signal strength, calculating a signal loss matching value according to a negative correlation relationship between the signal loss rate and the signal loss matching value, calculating a signal loss rate according to a difference value between the received signal strength fed back by the passive inductor and the transmitted signal strength and the ratio, and calculating any one of the signal loss matching values according to a negative correlation relationship between the signal loss rate and the signal loss matching value, wherein the signal loss matching value is represented by a variable w.
Calculating a signal direction deviation ratio according to the difference and/or the difference proportion between the currently received passive inductor feedback signal direction and the previous feedback signal direction, and calculating a signal direction matching value by the signal direction deviation ratio, wherein the signal direction deviation ratio is as follows: the method comprises the steps of calculating a signal direction deviation ratio according to the positive correlation relationship between the difference between the signal direction fed back by a currently received passive inductor and the previous feedback signal direction and the signal direction deviation ratio, calculating a signal direction matching value according to the negative correlation relationship between the signal direction deviation ratio and the signal direction matching value, calculating a signal direction deviation ratio according to the positive correlation relationship between the proportion of the difference between the signal direction fed back by the currently received passive inductor and the previous feedback signal direction and the signal direction deviation ratio, calculating a signal direction matching value according to the negative correlation relationship between the signal direction deviation ratio and the signal direction matching value, calculating a signal direction deviation ratio according to the positive correlation relationship between the difference between the signal direction fed back by the currently received passive inductor and the previous feedback signal direction and the difference proportion and the signal direction deviation ratio, and calculating any one of the signal direction matching values according to the negative correlation between the signal direction deviation ratio and the signal direction matching value, wherein the signal direction matching value is represented by a variable r.
The step of calculating the compliance matching value according to the feedback signal matching value and/or the signal loss matching value and/or the signal direction matching value is to calculate the compliance matching value according to a positive correlation relationship between the compliance matching value and the feedback signal matching value and/or the signal loss matching value and/or the signal direction matching value, and the compliance matching value is represented by a variable x.
Table a shows different embodiments for calculating the compliance match values, where the feedback signal match value l, the loss signal match value w, and the direction signal match value r are calculated according to any of the above embodiments.
TABLE A different embodiments for calculating a compliance match value
In this embodiment, the preset compliance matching threshold value X =0.8, and if the compliance matching value X (for example, A7) > X is calculated from any one of table a, it is determined that the vehicle is parked in the second space.
Embodiment two, a parking detection device
Fig. 4 is a schematic structural diagram of a ground active device of a parking detection apparatus according to this embodiment.
The passive inductor on the vehicle and the ground active equipment 21 are included, the vehicle is provided with a first space for accommodating the passive inductor, and the ground active equipment is provided with a second space for parking the vehicle; the second space is a set space with longitude and latitude, direction and shape; when the vehicle is parked on the ground active device, the projection of the first space on the second space has asymmetry relative to the center of the second space;
the ground active equipment is provided with a signal processing unit and is used for transmitting signals, detecting signals fed back by the passive inductor and judging whether the vehicle is parked in a second space or not according to the signal characteristics and/or the signal loss rate and/or the signal direction deviation rate fed back by the passive inductor, if so, judging that the vehicle is parked in a qualified state, and otherwise, judging that the vehicle is not parked in a qualified state.
The ground active device is internally provided with a shielding structure 213, and the relative positions of the signal shielding structure and the signal processing unit comprise a position where the signal processing unit is completely shielded by the shielding structure, a position where the signal processing unit is completely exposed by the shielding structure, and a position where the signal processing unit is partially exposed by the shielding structure.
Optionally, the shielding structure includes any one or combination of a magnetic shielding structure or a non-magnetic shielding structure or an electromagnetic shielding structure or other structures having a signal shielding function.
The relative position of the signal shielding structure and the signal processing unit is adjusted through a magnetic structure and/or a mechanical lever structure and/or a mechanical pressing structure and/or a mechanical sliding structure. In this embodiment, the shielding structure 213 adjusts the position by the motor 211.
Optionally, the transmission power of the signal transmitted by the signal processing unit is calculated according to the distance between the first space and the second space and/or the signal receiving sensitivity and/or the shielding index of the shielding structure and/or the feedback signal strength index. In this embodiment, calculating the transmission power of the signal transmitted by the signal processing unit according to the distance between the first space and the second space and/or the signal receiving sensitivity and/or the shielding index of the shielding structure and/or the feedback signal strength index includes: calculating the transmission power of the signal processing unit according to the positive correlation between the distance between the first space and the second space and the signal transmission power, calculating the transmission power of the signal processing unit according to the negative correlation between the signal receiving sensitivity and the signal transmission power, calculating the transmission power of the signal processing unit according to the negative correlation between the shielding index of the shielding structure and the signal transmission power, calculating the transmission power of the signal processing unit according to the negative correlation between the feedback signal strength index and the signal transmission power, calculating the transmission power of the signal processing unit according to the positive correlation between the distance between the first space and the second space and the signal transmission power and the negative correlation between the signal receiving sensitivity and the signal transmission power, calculating the transmission power of the signal processing unit according to the positive correlation between the distance between the first space and the second space and the signal transmission power, calculating the signal transmission power of the signal processing unit according to the negative correlation between the signal receiving sensitivity and the signal transmission power, calculating the signal transmission power calculating the transmission power of the signal transmitted by the signal processing unit according to the positive correlation between the distance between the first space and the second space and the signal transmission power and the negative correlation between the shielding index of the shielding structure and the signal transmission power, calculating the transmission power of the signal transmitted by the signal processing unit according to the positive correlation between the distance between the first space and the second space and the signal transmission power and the negative correlation between the feedback signal strength index and the signal transmission power, calculating the transmission power of the signal transmitted by the signal processing unit according to the negative correlation between the signal receiving sensitivity and the shielding index of the shielding structure and the signal transmission power, calculating the transmission power of the signal transmitted by the signal processing unit according to the negative correlation between the signal receiving sensitivity and the feedback signal strength index and the signal transmission power, calculating the transmission power of the signal transmitted by the signal processing unit according to the shielding index of the shielding structure and the negative correlation between the feedback signal strength index and the signal transmission power, the method comprises the steps of calculating the transmitting power of a signal processing unit transmitting signal according to the positive correlation relationship between the distance between a first space and a second space and the signal transmitting power and the negative correlation relationship between the signal receiving sensitivity and the shielding index of a shielding structure and the signal transmitting power, calculating the transmitting power of the signal processing unit transmitting signal according to the positive correlation relationship between the distance between the first space and the second space and the signal transmitting power and the negative correlation relationship between the signal receiving sensitivity and the feedback signal strength index of the shielding structure and the signal transmitting power, calculating the transmitting power of the signal processing unit transmitting signal according to the positive correlation relationship between the distance between the first space and the second space and the signal transmitting power and the negative correlation relationship between the shielding index of the shielding structure and the feedback signal strength index and the signal transmitting power, calculating the transmitting power of the signal processing unit transmitting signal according to the positive correlation relationship between the distance between the first space and the second space and the signal transmitting power and the negative correlation relationship between the shielding index of the signal receiving sensitivity and the feedback signal strength index of the shielding structure and the signal transmitting power, and calculating the transmitting power of the transmitting unit transmitting power, and the transmitting power of the transmitting unit, and the transmitting power, and the transmitting unit, and the transmitting power, wherein the transmitting power is represented by p.
The distance between the first space and the second space is obtained according to different distances between the first space and the second space when the bicycle is parked in a compliance mode and parked in a non-compliance mode through a bicycle foot support and is represented by a variable d; the signal reception sensitivity is represented by a variable m; the shielding index of the shielding structure is the attenuation degree of the shielding structure to the signal intensity (the ratio of the signal intensity loss value to the signal emission intensity value), and is represented by a variable n; the feedback signal strength index is any one of the feedback signal strength generated after the unit power signal is transmitted or the ratio of the feedback signal strength generated by the test signal to the test signal strength, and is represented by a variable h.
Table B shows different embodiments for calculating the transmission power of the signal transmitted by the signal processing unit, where the distance d between the first space and the second space, the signal receiving sensitivity m, the shielding index n of the shielding structure, and the feedback signal strength index h are obtained by the above embodiments.
Table B different embodiments of calculating the transmit power of the signal transmitted by the signal processing unit
In this embodiment, the transmission power p of the signal transmitted by the signal processing unit is calculated according to any one of the tables B. The signal processing unit transmits a signal according to the transmission power p. If the vehicle is parked in the second space, the relative position of the signal shielding structure and the signal processing unit is located at a position where the shielding structure completely exposes the signal processing unit, and the signals transmitted and received by the signal processing unit are not shielded, at this time, the method (any item in the table a) of the embodiment of the signal processing unit judges that the vehicle is parked in the second space, namely, the vehicle is parked in a meeting condition, and the vehicle returning operation is successfully completed; otherwise, the relative position of the signal shielding structure and the signal processing unit is moved to a position where the signal processing unit is completely shielded by the shielding structure or a position where the signal processing unit is partially exposed by the shielding structure, and the signal transmitted and received by the signal processing unit is completely shielded or partially shielded by the shielding structure, and at this time, the method (any one of the table a) of the embodiment of the signal processing unit determines that the vehicle is not parked in the second space, that is, the vehicle is not parked in a non-compliant manner, and the vehicle returning cannot be completed.
Third embodiment, a parking detection method
A flowchart of a parking detection method according to this embodiment is shown in fig. 5, and includes:
step S01, calculating the transmitting power of the signal transmitted by the signal processing unit according to the distance between the first space and the second space and/or the signal receiving sensitivity and/or the shielding index of the shielding structure and/or the feedback signal strength index;
s02, transmitting a signal by the active equipment on the ground when returning to the vehicle according to the calculated transmitting power;
s03, after receiving the signals, the passive inductor in the vehicle excites feedback signals and the feedback signals are received by a signal processing unit of ground active equipment;
and S04, judging whether the vehicle is parked in a second space or not by the signal processing unit according to the signal characteristics and/or the signal loss rate and/or the signal direction deviation rate fed back by the passive inductor, judging that the vehicle is parked in a compliance state if the vehicle is parked in the second space, and judging that the vehicle is not parked in a compliance state if the vehicle is parked in the compliance state.
In this embodiment, the transmission power p of the signal transmitted by the signal processing unit is calculated according to any one of tables B. The signal processing unit transmits a signal according to the transmission power p. If the vehicle is parked in the second space, the relative position of the signal shielding structure and the signal processing unit is located at a position where the shielding structure completely exposes the signal processing unit, and the signals transmitted and received by the signal processing unit are not blocked, at this time, the method (any one of the table a) of the embodiment of the signal processing unit judges that the vehicle is parked in the second space, namely, the vehicle is parked in a meeting condition, and the vehicle returning operation is successfully completed; otherwise, the relative position of the signal shielding structure and the signal processing unit is moved to a position where the signal processing unit is completely shielded by the shielding structure or a position where the signal processing unit is partially exposed by the shielding structure, the signal transmitted and received by the signal processing unit is completely shielded or partially shielded by the shielding structure, and at this time, the method (any one of tables a) described in the above embodiment of the signal processing unit determines that the vehicle is not parked in the second space, that is, the vehicle is not parked in a qualified state, and the vehicle returning cannot be completed.
A computer-readable storage medium storing a computer program for electronic data exchange according to an embodiment of the present invention, wherein the computer program causes a computer to execute the method according to any one of the above-mentioned embodiments.
A parking detection system according to an embodiment of the present invention is schematically shown in fig. 6, and includes:
an RFID reader; for identifying the RFID information;
a processor;
a memory;
and
one or more programs, wherein the one or more programs are stored in the memory and configured to be executed by the processor, the programs causing the computer to perform the method of any of the embodiments described above.
Of course, those skilled in the art should realize that the above embodiments are only used for illustrating the present invention, and not as a limitation to the present invention, and that the changes and modifications of the above embodiments will fall within the protection scope of the present invention as long as they are within the scope of the present invention.
Claims (11)
1. A parking detection device characterized in that:
the passive inductor and the ground active equipment on the vehicle are included; the vehicle is provided with a first space for accommodating the passive inductor, and the ground active equipment is provided with a second space for parking the vehicle; the second space is a set space with longitude and latitude, direction and shape; when the vehicle is parked on the ground active device, the projection of the first space on the second space has asymmetry relative to the center of the second space;
the ground active equipment is provided with a signal processing unit which is used for transmitting signals and detecting signals fed back by the passive inductor and judging whether the vehicle is parked in the second space or not according to the signal characteristics and/or the signal loss rate and/or the signal direction deviation rate fed back by the passive inductor, if so, the vehicle is judged to be parked in a compliance state, and otherwise, the vehicle is judged to be parked in a non-compliance state.
2. The parking detection apparatus according to claim 1, wherein the first space includes a vehicle underbody protrusion and/or a vehicle underbody depression; the second space includes a recessed space for receiving a raised portion of the vehicle's underbody and/or a raised space for receiving a recessed portion of the vehicle's underbody.
3. The parking detection device according to claim 2, wherein the recessed space is any one or a combination of more than one of a spherical recess, a hemispherical recess, an arc-shaped recess, a cylindrical recess, a conical recess, a cubic recess, a rectangular recess, a parallelogram recess, a rhombic recess, a polygonal recess, a spiral recess, a stepped recess, and an irregularly-shaped recess that matches a vehicle bottom convex portion; the convex space is any one or more of a spherical bulge, a hemispherical bulge, an arc-shaped bulge, a cylindrical bulge, a conical bulge, a cubic bulge, a rectangular bulge, a parallelogram bulge, a rhombic bulge, a polygonal bulge, a spiral bulge, a stepped bulge or an irregular-shaped bulge matched with the concave part of the bottom of the vehicle.
4. The parking detection apparatus as claimed in claim 1, wherein the judging of whether the vehicle is parked in the second space according to the signal characteristics and/or the signal loss rate and/or the signal direction deviation rate fed back by the passive inductor comprises the steps of:
calculating a feedback signal matching value according to the signal intensity value fed back by the passive inductor and/or the fed back signal angle;
calculating a signal loss rate according to the difference and/or ratio of the received signal intensity fed back by the passive inductor and the transmitted signal intensity, and calculating a signal loss matching value according to the signal loss rate;
calculating a signal direction deviation ratio according to the difference and/or the difference proportion between the currently received passive inductor feedback signal direction and the previous feedback signal direction, and calculating a signal direction matching value;
and calculating a compliance matching value according to the feedback signal matching value and/or the signal loss matching value and/or the signal direction matching value, and judging whether the vehicle is parked in the second space or not according to the compliance matching value.
5. The parking detection apparatus according to claim 1, wherein the ground active device has a shielding structure therein, and the relative positions of the shielding structure and the signal processing unit include a position where the signal processing unit is completely shielded by the shielding structure, a position where the signal processing unit is completely exposed by the shielding structure, and a position where the signal processing unit is partially exposed by the shielding structure.
6. The parking detection apparatus according to claim 5, wherein the shielding structure includes any one or a combination of a magnetic shielding structure or a non-magnetic shielding structure or an electromagnetic shielding structure or other structures having a signal shielding function; the relative position of the signal shielding structure and the signal processing unit is adjusted through a magnetic structure and/or a mechanical lever structure and/or a mechanical pressing structure and/or a mechanical sliding structure.
7. The parking detection apparatus as recited in claim 5, wherein if the vehicle is parked in the second space, the relative position of the signal shielding structure and the signal processing unit is at a position where the signal processing unit is completely exposed by the shielding structure, and signals transmitted and received by the signal processing unit are not blocked; otherwise, the relative position of the signal shielding structure and the signal processing unit is moved to the position where the signal processing unit is completely shielded by the shielding structure or the position where the signal processing unit is partially exposed by the shielding structure, and the signal transmitted and received by the signal processing unit is completely shielded or partially shielded by the shielding structure.
8. Parking detection device according to claim 5, wherein the transmission power of the signal transmitted by the signal processing unit is calculated from the distance of the first space from the second space and/or the signal reception sensitivity and/or the shielding index of the shielding structure and/or the feedback signal strength index.
9. A method of detecting parking, comprising:
calculating the transmitting power of the signal transmitted by the signal processing unit according to the distance between the first space and the second space and/or the signal receiving sensitivity and/or the shielding index of the shielding structure and/or the feedback signal strength index;
the active equipment transmits signals according to the calculated transmitting power when the vehicle is turned off;
after receiving the signals, the passive inductor in the vehicle excites feedback signals and the feedback signals are received by a signal processing unit of the ground active equipment;
and the signal processing unit judges whether the vehicle is parked in the second space or not according to the signal characteristics and/or the signal loss rate and/or the signal direction deviation rate fed back by the passive inductor, if so, the vehicle is judged to be parked in a compliance mode, and if not, the vehicle is judged to be parked in a non-compliance mode.
10. A computer-readable storage medium storing a computer program for electronic data exchange, wherein the computer program causes a computer to perform the method of claim 9.
11. A parking detection system, comprising:
a signal processing unit; the signal is used for transmitting a signal and detecting feedback of the passive inductor;
a memory;
and
one or more programs, wherein the one or more programs are stored in a memory and configured to be executed by the signal processing unit, the programs cause a computer to perform the method of claim 9.
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