CN104658306B - vehicle on-position detection method and parking space monitoring device - Google Patents
vehicle on-position detection method and parking space monitoring device Download PDFInfo
- Publication number
- CN104658306B CN104658306B CN201310576499.6A CN201310576499A CN104658306B CN 104658306 B CN104658306 B CN 104658306B CN 201310576499 A CN201310576499 A CN 201310576499A CN 104658306 B CN104658306 B CN 104658306B
- Authority
- CN
- China
- Prior art keywords
- vehicle
- low
- parking space
- frequency
- monitoring device
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/14—Traffic control systems for road vehicles indicating individual free spaces in parking areas
- G08G1/141—Traffic control systems for road vehicles indicating individual free spaces in parking areas with means giving the indication of available parking spaces
- G08G1/142—Traffic control systems for road vehicles indicating individual free spaces in parking areas with means giving the indication of available parking spaces external to the vehicles
Abstract
The invention discloses a vehicle in-place detection method and a parking space monitoring device, wherein the vehicle in-place detection method comprises the steps that the parking space monitoring device detects a low-frequency signal sent by a power system of a vehicle in operation, and judges whether a vehicle exists in a corresponding parking space or not according to a detection result.
Description
Technical Field
The invention relates to the field of electronic equipment, in particular to an vehicle in-place detection method and a parking space monitoring device.
Background
Along with the arrival of the China automobile era, more and more vehicles are available, the current traditional vehicle on-site detection method is that a geomagnetic detection module is arranged in the middle of a parking space, and the geomagnetic detection module detects whether a vehicle is on the parking space or not through the change of geomagnetic field lines of force on the parking space. This approach has a number of drawbacks, such as:
1) the earth's magnetic field in the natural environment will change constantly and cause false detection
The magnitude of the earth magnetic field in the natural environment changes slightly every day and every minute, and the geomagnetic detection module cannot accurately identify the change, so that false detection can be caused.
2) The influence of the material of part of the vehicle on the magnetic force line of the geomagnetic field is weak, so that the influence is difficult to detect
The vehicle can be seen as a model made up of a plurality of bipolar magnets with north-south polarization directions causing perturbations in the earth's magnetic field. The disturbance is particularly obvious at the ferrous medium in the vehicle, the comprehensive influence of the disturbance is distortion and distortion of magnetic lines of the earth magnetic field, but if no ferrous medium exists on the vehicle or the influence of the vehicle on the magnetic lines of the earth magnetic field is not obvious, the geomagnetic detection module on the parking space cannot detect the vehicle.
3) Error detection due to rapid temperature change
For example, in rainy days in summer, when the sun drills out of the cloud layer, the geomagnetic detection module is suddenly irradiated, the surface temperature of the geomagnetic detection module is rapidly changed, and the detection value of the geomagnetic detection module is changed accordingly, so that the detection error is caused.
Therefore, the traditional vehicle in-place detection method has defects.
Disclosure of Invention
The invention provides new vehicle presence detection methods and parking space monitoring devices which are different from the traditional mode.
In order to solve the technical problems, the invention adopts the following technical scheme:
vehicle on-line detection method, a parking space monitoring device detects low frequency signal sent by the running of the power system of the vehicle, and judges whether there is a vehicle in the corresponding parking space according to the detection result.
, determining whether there is a vehicle in the corresponding parking space according to the detection result includes comparing the detected th low frequency signal with a preset limit, and determining that there is a vehicle in the corresponding parking space if the th low frequency signal is greater than or equal to the preset limit.
, comparing the detected th low frequency signal intensity with a preset limit value further comprises detecting an environment low frequency signal when no vehicle is in the corresponding parking space by the parking space monitoring device, and calculating the limit value according to the detected environment low frequency signal intensity and a preset floating parameter value.
, before calculating the limit according to the detected intensity of the environmental low frequency signal and the preset floating parameter value, the parking space monitoring device detects th low frequency signals when different vehicles exist in the corresponding parking space, and calculates the floating parameter value according to the detected intensity of each th low frequency signal and the intensity of the environmental low frequency signal.
, if the judgment result is that there is a vehicle in the corresponding parking space, the method further comprises the step of communicating the parking space monitoring device with a vehicle-mounted device of the vehicle through a low frequency and/or radio frequency channel, and/or communicating the parking space monitoring device with a background management center.
, the communication between the parking space monitoring device and the vehicle-mounted device of the vehicle through the low frequency and radio frequency channels is specifically that the parking space monitoring device sends radio frequency communication parameters to the vehicle-mounted device through a second low frequency signal, establishes a radio frequency channel with the vehicle-mounted device according to the radio frequency communication parameters, and carries out radio frequency communication with the vehicle-mounted device through the radio frequency channel.
The parking space monitoring device comprises a low-frequency detection module and a judgment module, wherein the low-frequency detection module is used for detecting a low-frequency signal sent by a power system of a vehicle during operation, and the judgment module is used for judging whether the vehicle is in a corresponding parking space according to a detection result of the low-frequency signal detection module.
And , the determining module is specifically configured to compare the intensity of the th low-frequency signal detected by the low-frequency detecting module with a preset limit, and if the intensity of the th low-frequency signal is greater than or equal to a preset limit, determine that a vehicle is in the corresponding parking space.
, the low frequency detection module is further used for detecting the environment low frequency signal when no vehicle is in the corresponding parking space, and the parking space monitoring device further comprises a limit value calculation module for calculating the limit value according to the intensity of the environment low frequency signal detected by the low frequency detection module and the preset floating parameter value.
, the low frequency detection module is further used for detecting th low frequency signals when different vehicles exist in the corresponding parking space, and the parking space monitoring device further comprises a floating parameter value calculation module used for calculating the floating parameter value according to the intensity of the th low frequency signal detected by the low frequency detection module when different vehicles exist in the corresponding parking space and the intensity of the environment low frequency signal.
, the parking space monitoring device further comprises a low frequency communication module for communicating with the vehicle-mounted device through a low frequency channel, a radio frequency communication module for communicating with the vehicle-mounted device through a radio frequency channel, and/or a background communication module for communicating with a background management center.
, the low frequency communication module is specifically configured to send a radio frequency communication parameter to the vehicle-mounted device through the second low frequency signal, and the radio frequency communication module is specifically configured to establish a radio frequency channel with the vehicle-mounted device according to the radio frequency communication parameter, and perform radio frequency communication with the vehicle-mounted device through the radio frequency channel.
, the low frequency detection module includes a induction coil for coupling a low frequency signal emitted when the power system of the vehicle is running, the low frequency communication module includes a second induction coil for transmitting a second low frequency signal to the vehicle-mounted device and/or coupling a third low frequency signal emitted by the vehicle-mounted device, and the induction coil and the second induction coil are induction coils.
According to the vehicle on-site detection method and the parking space monitoring device, the parking space monitoring device detects whether a vehicle is in a corresponding parking space or not by means of a low-frequency signal sent by a power system of the vehicle during operation. The scheme is different from the traditional scheme of detecting whether a vehicle exists or not by depending on the change of the magnetic lines of the geomagnetic field, and is basically not influenced by the change of the geomagnetic field in the natural environment, the material of the vehicle and the change of the environmental temperature. The accuracy and the stability of the detection are improved.
Drawings
FIG. 1 is a flow chart of a vehicle presence detection method according to an embodiment of the present invention;
FIG. 2 is a schematic view of a parking space monitoring device according to an embodiment of the present invention;
FIG. 3 is a schematic view of a parking space monitoring device according to another embodiment of the present invention;
FIG. 4 is a schematic view of a parking space monitoring device according to another embodiment of the present invention;
fig. 5 is a schematic view of a parking space monitoring device according to another embodiment of the present invention.
Detailed Description
The engine of the motor vehicle comprises machines which can convert other forms of energy into mechanical energy and output power outwards through the mechanical energy to drive the vehicle to move, such as an internal combustion engine (gasoline engine, etc.), an external combustion engine (Stirling engine, steam engine, etc.), an electric motor, etc. for the engine with a spark plug ignition function (such as the internal combustion engine, the external combustion engine, etc.), electric sparks can be generated between spark plug electrodes at regular time, high-intensity noise signals ( low-frequency electromagnetic signals) are generated at the moment of ignition, noise signals ( low-frequency electromagnetic signals) with characteristic frequencies are generated by the rotation and circulation of a crankshaft under the pushing of a piston, noise signals ( low-frequency electromagnetic signals) are generated by the operation of the electric motor for the engine without the spark plug ignition function (such as the electric motor, etc.), the low-frequency signals of which are generated during the operation of the power system of the vehicle comprise but are not limited to the noise signals generated at the moment of spark plug ignition, the noise signals generated by the motion of the crankshaft, and the noise signals generated by the operation of the electric motor.
The invention is further described in detail by the following detailed description taken in conjunction with the accompanying drawings.
Fig. 1 is a flowchart of a vehicle presence detection method according to an embodiment of the present invention, please refer to fig. 1, where the method includes the following steps:
s101, detecting low-frequency signals sent by a power system of the vehicle when the power system operates by the parking space monitoring device.
The parking space monitoring devices can be arranged on or around the corresponding parking spaces, can be arranged on the ground or buried under the ground, and are determined according to the specific conditions of the parking spaces, and the same parking spaces as can correspond to or more parking space monitoring devices.
S102, judging whether a vehicle is in the corresponding parking space or not according to the detection result, if the judgment result is that the vehicle is in the corresponding parking space, the step S103 can be selected, and if the judgment result is that the vehicle is not in the corresponding parking space, the step S101 can be selected to be returned.
In embodiments, the determining whether there is a vehicle in the corresponding parking space according to the detection result includes comparing the detected -th low-frequency signal with a preset limit, and if the strength of the -th low-frequency signal is greater than or equal to a preset limit, determining that there is a vehicle in the corresponding parking space, otherwise, determining that there is no vehicle in the corresponding parking space, including but not limited to comparing the currently detected -th low-frequency signal with a preset limit in real time, and if the strength of the -th low-frequency signal is greater than or equal to a preset limit, determining that there is a vehicle in the corresponding parking space, or determining whether there is a vehicle in the corresponding parking space according to the strength of the -th low-frequency signal detected in a preset statistical period, specifically, comparing the currently detected -th low-frequency signal with a preset limit in real time, if the strength is greater than or equal to a preset limit, counting 1 in the preset statistical period, and storing a statistical value in the preset statistical period, comparing the threshold with the preset statistical period, and determining that there is a corresponding parking space 3884 or equal to the corresponding vehicle.
In , the limit may be determined by the parking space monitoring device detecting an environmental low frequency signal when there is no vehicle in the corresponding parking space, calculating the limit according to the detected environmental low frequency signal intensity (which may be an average value of multiple detections, or an average value calculated after excluding a highest value and a lowest value if multiple detections), and a preset floating parameter value, wherein the detected environmental low frequency signal intensity when there is no vehicle in the corresponding parking space is measured data, and the limit is calculated according to the measured data when there is no vehicle in the corresponding parking space and the preset floating parameter value.
Preferably, in the process of detecting the strength of the environmental low-frequency signal, the interference of other electromagnetic signals is ensured to be avoided as much as possible.
In embodiments, after the parking space monitoring device detects the environmental low-frequency signal when there is no vehicle in the corresponding parking space, before calculating the limit value according to the intensity of the detected environmental low-frequency signal and the preset floating parameter value, the method further includes determining whether the intensity of the detected environmental low-frequency signal meets a requirement (for example, determining whether the intensity is greater than a threshold value, if the intensity is greater than the threshold value, the environmental low-frequency signal is too strong, and the requirement is not met), if the intensity does not meet the requirement, prompting that the detection fails and the detection is repeated, and if the intensity meets the requirement, calculating the limit value according to the intensity of the detected environmental low-frequency signal and the preset floating parameter value.
In , the limit is calculated according to the detected intensity of the ambient low frequency signal and the preset floating parameter value, specifically, the limit is equal to the sum of the intensity of the ambient low frequency signal and the preset floating parameter value.
In , the floating parameter value can be determined by the parking space monitoring device detecting low frequency signals when different vehicles are in the corresponding parking space, calculating the floating parameter value according to the detected intensity of each low frequency signal and the intensity of the environment low frequency signal, wherein the intensity of the low frequency signal when different vehicles are in the corresponding parking space is measured data, and the floating parameter value is calculated from the measured data when different vehicles are in the corresponding parking space and the measured data when no vehicle is in the corresponding parking space.
In , the floating parameter value is calculated according to the detected intensity of each low frequency signal and the detected intensity of the environment low frequency signal, specifically, the floating parameter value is equal to the average value of the difference value obtained by subtracting the intensity of the environment low frequency signal from the intensity of each low frequency signal, or the floating parameter value is equal to the difference value obtained by subtracting the intensity of the environment low frequency signal from the average value of the intensity of each low frequency signal.
S103, if the judgment result of the step S102 is that the corresponding parking space is provided with the vehicle, the method further comprises the following steps: the parking space monitoring device is communicated with a vehicle-mounted device of a corresponding vehicle through a low-frequency and/or radio-frequency channel; and/or the parking space monitoring device is communicated with the background management center. Preferably, the frequency of the low-frequency communication is not lower than 100Hz and not higher than 10MHz, and more preferably, the frequency of the low-frequency communication is not lower than 100Hz and not higher than 300 kHz. More preferably, it is 125 kHz.
The parking space monitoring device can send radio frequency communication parameters, parking space information (including parking space identification, rate and the like) and the like to the vehicle-mounted device through the low frequency or radio frequency channel, and the vehicle-mounted device can send vehicle information (such as license plate number), owner information (owner name, mobile phone number, owner fee deduction account number, owner fee deduction card number, account balance and the like) to the parking space monitoring device through the low frequency or radio frequency channel, and steps are carried out, in order to control power consumption, the low frequency channel and the radio frequency channel are closed in an initial state, and the parking space monitoring device is opened when a vehicle is judged to be in a corresponding parking space.
In , the specific process of the parking space monitoring device communicating with the vehicle-mounted device of the corresponding vehicle through the low frequency and radio frequency channels may include the parking space monitoring device sending a radio frequency communication parameter to the vehicle-mounted device through a second low frequency signal, establishing a radio frequency channel with the vehicle-mounted device according to the radio frequency communication parameter, and performing radio frequency communication with the vehicle-mounted device through the radio frequency channel, and further closing the low frequency channel after the parking space monitoring device establishes the radio frequency channel with the vehicle-mounted device in order to control power consumption.
The communication modes of the parking space monitoring device and the background management center comprise wireless communication, wired communication and the like. Preferably, when the determination result in step S102 is that there is a vehicle in the corresponding parking space, the parking space monitoring device sends a parking space occupied notification to the background management center.
In embodiments, the system further includes S104, the parking space monitoring device or the vehicle-mounted device of the corresponding vehicle sends the vehicle information or the vehicle owner information and the parking space information to the background management center, after the background management center receives the notification that the parking space is occupied in step S103, the background management center can determine whether the vehicle information or the vehicle owner information of the corresponding vehicle at the parking space is received within a preset time, if the vehicle information or the vehicle owner information is not received, the background management center can notify the worker to go to the site to check to eliminate the missed detection, and if the vehicle information is received, the background management center can correspond the parking space to the vehicle at the parking space to improve the management quality.
Fig. 2 is a schematic view of a parking space monitoring device provided by an embodiment of the present invention, referring to fig. 2, the parking space monitoring device 2 includes a low frequency detection module 21 for detecting a th low frequency signal generated when a power system of a vehicle operates, and a determination module 22 for determining whether a vehicle is located in a corresponding parking space according to a detection result of the low frequency signal detection module.
In , the low frequency detection module 21 further includes a th inductive coil for coupling a th low frequency signal generated when the powertrain of the vehicle is operating.
In embodiments, the determining module 22 is specifically configured to compare the intensity of the th low-frequency signal detected by the low-frequency detecting module 21 with a preset limit, and determine that there is a vehicle in the corresponding parking space if the intensity of the th low-frequency signal is greater than or equal to a preset limit, where the determining module 22 includes, but is not limited to, comparing the intensity of the th low-frequency signal currently detected by the low-frequency detecting module 21 with a preset limit in real time, and determining that there is a vehicle in the corresponding parking space if the intensity of the th low-frequency signal is greater than or equal to a preset limit, or determining whether there is a vehicle in the corresponding parking space according to the intensity of the th low-frequency signal detected in a preset statistical period by the determining module 22, specifically, where the determining module 22 includes a th comparing submodule, a counting submodule and a second comparing submodule, the th comparing submodule is configured to compare the intensity of the th low-frequency signal currently detected by the low-frequency detecting module 21 with a preset limiting value, and if the count submodule is greater than or equal to a preset limit, the statistical result of the counting submodule, and the counting submodule is configured to compare the preset statistical result with a preset limiting value in the preset statistical period, and output a statistical result, where the counting submodule is greater than the third statistical result of the corresponding statistical result of the statistical threshold.
In embodiments, the low frequency detecting module 21 or the determining module 22 further includes a th signal processing module for performing preset processing on a th low frequency signal coupled by a th induction coil and transmitting the preset processed signal to the determining module 22, a th induction coil is continuously coupled with a th low frequency signal emitted by a vehicle power system during operation, a th signal processing module may continuously or periodically perform preset processing on a th low frequency signal coupled by a th induction coil, a period of the preset processing may be determined according to a duration of the low frequency electromagnetic signal generated by the vehicle power system, assuming that a spark plug is ignited to generate the low frequency electromagnetic signal with a duration of T1 and a duration of the low frequency electromagnetic signal generated by crankshaft motion is T2, a th signal processing module may process a th low frequency signal coupled by a th induction coil approximately with a period of T1+ T2 or a period of T2, a th signal processing module includes a signal amplifier, a signal analyzer, a buffer amplifier, a 585 th signal processing module may perform amplification stage amplification analysis on a signal, and may perform amplification analysis on a multi-stage signal amplification signal according to a multi-stage amplification amplifier, a signal amplification stage amplification amplifier, which may be a multi-stage amplification amplifier, and an amplification stage amplification amplifier for filtering an interference signal which is required for filtering an interference signal.
In embodiments, the low frequency detection module 21 is further configured to detect an environmental low frequency signal corresponding to a parking space without a vehicle, and the parking space monitoring device 2 further includes a limit value calculation module 23, configured to calculate the limit value according to the intensity of the environmental low frequency signal detected by the low frequency detection module 21 and a preset floating parameter value.
In , the low frequency detection module 21 is further configured to detect a th low frequency signal when there is a different vehicle in the corresponding parking space, and the parking space monitoring device 2 further includes a floating parameter value calculation module 24 configured to calculate the floating parameter value according to the intensity of the th low frequency signal detected by the low frequency detection module 21 when there is a different vehicle in the corresponding parking space and the intensity of the environment low frequency signal.
In embodiments, the parking space monitoring device 2 further includes a low frequency communication module, a radio frequency communication module, or a background communication module, or includes any two of the low frequency communication module, the radio frequency communication module, and the background communication module, wherein the low frequency communication module is used for communicating with the vehicle-mounted device of the vehicle in the corresponding parking space through a low frequency channel, the radio frequency communication module is used for communicating with the vehicle-mounted device of the vehicle in the corresponding parking space through a radio frequency channel, and the background communication module is used for communicating with the background management center.
As shown in fig. 3, different from fig. 2, the parking space monitoring device 2 further includes a low frequency communication module 25 and a background communication module 27, where the low frequency communication module 25 is mainly used for sending parking space information and the like to the vehicle-mounted device, receiving vehicle information and vehicle owner information sent by the vehicle-mounted device, the background communication module 27 is mainly used for receiving information sent by the background management center, and sending information to the background management center, for example, when the determination result of the determination module 22 is that there is a vehicle in a corresponding parking space, sending a parking space occupied notification to the background management center, and after receiving the vehicle information or vehicle owner information sent by the vehicle-mounted device, sending the vehicle information or vehicle owner information and the parking space information to the background management center, and , in order to control power consumption, in an initial state, the low frequency communication module 25 is turned off, and when the determination result of the determination module 22 is that there is a vehicle in the corresponding parking space, the determination module 22 triggers the low.
As shown in fig. 4, different from fig. 2, the parking space monitoring device 2 further includes a radio frequency communication module 26 and a background communication module 27, where the radio frequency communication module 26 is mainly used for sending parking space information and the like to the vehicle-mounted device, receiving vehicle information, vehicle owner information and the like sent by the vehicle-mounted device, the background communication module 27 is mainly used for receiving information sent by the background management center, and sending information to the background management center, for example, when the judgment result of the judgment module 22 is that there is a vehicle in a corresponding parking space, sending a parking space occupied notification to the background management center, after receiving the vehicle information or vehicle owner information sent by the vehicle-mounted device, sending the vehicle information or vehicle owner information, and the parking space information to the background management center, and , in order to control power consumption, in an initial state, the radio frequency communication module 26 is turned off, and when the judgment result of the judgment module 22 is that there is a vehicle in a corresponding parking space, the judgment module 22 triggers.
As shown in fig. 5, different from fig. 2, the parking space monitoring device 2 further includes a low frequency communication module 25, a radio frequency communication module 26, and a background communication module 27, preferably, the low frequency communication module 25 is mainly used for sending parking space information, radio frequency communication parameters, and the like to the vehicle-mounted device, the radio frequency communication module 26 is mainly used for establishing a radio frequency channel with the vehicle-mounted device according to the radio frequency communication parameters, and receiving vehicle information, vehicle owner information, and the like sent by the vehicle-mounted device, the background communication module 27 is mainly used for receiving information sent by the background management center and sending information to the background management center, for example, when the judgment result of the judgment module 22 is that there is a vehicle in a corresponding parking space, sending a parking space occupied notification to the background management center, after the radio frequency communication module 26 receives the vehicle information or vehicle owner information sent by the vehicle-mounted device, the background communication module 27 sends the vehicle information or vehicle owner information to the background management center, and the parking space information, is used for controlling power consumption, in an initial state, the low frequency communication module 25 and the radio frequency communication module 26 are turned off, and the radio frequency communication module 25 is turned on and the radio frequency communication module 26 is turned on after the radio frequency communication module is triggered.
In , the low frequency communication module 25 includes a second inductive coil for transmitting a second low frequency signal to the vehicle-mounted device and/or coupling a third low frequency signal from the vehicle-mounted device the low frequency communication module 25 may include a second signal processing module, in addition to the inductive coil, for primarily generating the second low frequency signal and/or interpreting the third low frequency signal.
In , the induction coils of the low frequency detection module 21 and the low frequency communication module 25 are the same induction coil , that is, the th induction coil and the second induction coil are the same induction coil , the low frequency detection module 21 couples the th low frequency signal generated when the power system of the vehicle operates with the induction coil, and the low frequency communication module 25 transmits the second low frequency signal to the vehicle-mounted device through the induction coil, and/or couples the third low frequency signal generated by the vehicle-mounted device through the induction coil.
In some embodiments, the operating frequency of the low frequency communication module 25 is no less than 100Hz, no more than 10MHz, preferably no less than 100Hz, and no more than 300 kHz.
Compared with the traditional scheme of detecting whether a vehicle exists or not by depending on the change of the magnetic force lines of the geomagnetic field, the method and the device have the advantages that the change of the geomagnetic field in the natural environment, the material of the vehicle and the environmental temperature is basically not influenced, the accuracy and the stability of detection are improved, and , after the vehicle is detected to exist in the corresponding parking space, the parking space monitoring device is also communicated with a vehicle-mounted device of the vehicle in the corresponding parking space through a low-frequency and/or radio-frequency channel, the parking space monitoring device or the vehicle-mounted device also sends vehicle information or vehicle owner information and parking space information to a background management center, so that the correspondence between the parking space and the vehicle in the parking space is realized for the background management center, and the management quality is improved.
It will be apparent to those skilled in the art that many more modifications and variations can be made in the present invention without departing from the spirit or scope of the invention as defined in the following claims .
Claims (9)
- The method for detecting the vehicles in the position of is characterized in that a parking space monitoring device detects an environment low-frequency signal when no vehicle exists in a corresponding parking space, a limit value is calculated according to the intensity of the detected environment low-frequency signal and a preset frequency parameter value, and the limit value is equal to the sum of the intensity of the environment low-frequency signal and the preset frequency parameter value;the parking space monitoring device detects low-frequency signals sent by a power system of a vehicle during operation, wherein the power system comprises an engine;and comparing the detected intensity of the th low-frequency signal with the preset limit value, and if the intensity of the th low-frequency signal is greater than or equal to the preset limit value, judging that a vehicle is in the corresponding parking space.
- 2. The method as claimed in claim 1, wherein before calculating the threshold according to the detected intensity of the environmental low frequency signal and the predetermined frequency parameter, the parking space monitoring device detects low frequency signals of different vehicles in the corresponding parking space, and calculates the frequency parameter according to the detected intensity of low frequency signals and the intensity of the environmental low frequency signals.
- 3. The method for detecting the presence of a vehicle as claimed in any one of claims 1 to 2 and , wherein if the result is that there is a vehicle in the corresponding parking space, the method further comprises the step of communicating the parking space monitoring device with a vehicle-mounted device of the vehicle through a low frequency and/or radio frequency channel, and/or communicating the parking space monitoring device with a background management center.
- 4. The vehicle presence detection method according to claim 3, wherein the communication between the parking space monitoring device and the vehicle-mounted device of the vehicle through the low-frequency and radio-frequency channels is specifically: the parking space monitoring device sends radio frequency communication parameters to the vehicle-mounted device through a second low-frequency signal; and establishing a radio frequency channel with the vehicle-mounted device according to the radio frequency communication parameters, and carrying out radio frequency communication with the vehicle-mounted device through the radio frequency channel.
- 5, kind of parking stall monitoring device, its characterized in that includes:the system comprises a low-frequency detection module, a low-frequency detection module and a control module, wherein the low-frequency detection module is used for detecting th low-frequency signals sent by a power system of a vehicle when the power system runs, the power system comprises an engine, and the low-frequency detection module is also used for detecting environment low-frequency signals when no vehicle exists in a corresponding parking space;the parking space monitoring device further comprises an limit value calculation module, wherein the limit value calculation module is used for calculating limit values according to the intensity of the environment low-frequency signal detected by the low-frequency detection module and a preset frequency parameter value, and the limit value is equal to the sum of the intensity of the environment low-frequency signal and the preset frequency parameter value;and the judging module is used for comparing the intensity of the th low-frequency signal detected by the low-frequency detecting module with a preset limit value, and if the intensity of the th low-frequency signal is greater than or equal to the preset limit value, judging that a vehicle is in the corresponding parking space.
- 6. The parking space monitoring device according to claim 5, wherein the low frequency detection module is further configured to detect th low frequency signals when different vehicles are present in the corresponding parking space, and the parking space monitoring device further comprises a frequency parameter value calculation module configured to calculate the frequency parameter value according to the intensity of the th low frequency signal detected by the low frequency detection module when different vehicles are present in the corresponding parking space and the intensity of the environment low frequency signal.
- 7. A space monitoring device according to any one of claims 5 to 6 and , further comprising:the low-frequency communication module is used for communicating with the vehicle-mounted device through a low-frequency channel;the radio frequency communication module is used for communicating with the vehicle-mounted device through a radio frequency channel;and/or the background communication module is used for communicating with the background management center.
- 8. The parking space monitoring device according to claim 7, wherein the low frequency communication module is specifically configured to send the radio frequency communication parameters to the vehicle-mounted device through a second low frequency signal; the radio frequency communication module is specifically used for establishing a radio frequency channel with the vehicle-mounted device according to the radio frequency communication parameters and carrying out radio frequency communication with the vehicle-mounted device through the radio frequency channel.
- 9. The parking space monitoring device according to claim 7, wherein the low-frequency detection module comprises an th induction coil for coupling a th low-frequency signal emitted when a power system of the vehicle runs, the low-frequency communication module comprises a second induction coil for emitting a second low-frequency signal to the vehicle-mounted device and/or coupling a third low-frequency signal emitted by the vehicle-mounted device, and the th induction coil and the second induction coil are the same induction coil .
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310576499.6A CN104658306B (en) | 2013-11-15 | 2013-11-15 | vehicle on-position detection method and parking space monitoring device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310576499.6A CN104658306B (en) | 2013-11-15 | 2013-11-15 | vehicle on-position detection method and parking space monitoring device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104658306A CN104658306A (en) | 2015-05-27 |
| CN104658306B true CN104658306B (en) | 2020-01-31 |
Family
ID=53249367
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310576499.6A Active CN104658306B (en) | 2013-11-15 | 2013-11-15 | vehicle on-position detection method and parking space monitoring device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104658306B (en) |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106781659B (en) * | 2016-12-21 | 2019-09-13 | 迈锐数据（北京）有限公司 | A kind of parking space state a reference value scaling method and device |
| DE102017213818A1 (en) * | 2017-08-08 | 2019-02-14 | Robert Bosch Gmbh | Device for monitoring an occupancy state of a parking space of a parking space and system having such a device and method for operating such a device and such a system |
| CN111862668B (en) * | 2019-05-10 | 2022-08-16 | 北京骑胜科技有限公司 | Vehicle parking management method, device and system |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3808317B2 (en) * | 2001-02-28 | 2006-08-09 | アマノ株式会社 | Parking lot management device with acoustic monitoring |
| CN102682765A (en) * | 2012-04-27 | 2012-09-19 | 中咨泰克交通工程集团有限公司 | Expressway audio vehicle detection device and method thereof |
| CN102722741A (en) * | 2012-06-15 | 2012-10-10 | 深圳市远望谷信息技术股份有限公司 | Vehicle data acquiring device and method based on active radio frequency identification |
| CN102737411A (en) * | 2011-12-06 | 2012-10-17 | 浙江创泰科技有限公司 | Non-waiting parking management system based on RFID (radio frequency identification device) and sensor |
| CN202650271U (en) * | 2011-11-24 | 2013-01-02 | 中船重工(武汉)凌久信息技术有限公司 | Acoustic magnetic composite carport sensor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3710113B2 (en) * | 1998-11-18 | 2005-10-26 | Ｎｅｃエンジニアリング株式会社 | Parking position confirmation system |
-
2013
- 2013-11-15 CN CN201310576499.6A patent/CN104658306B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP3808317B2 (en) * | 2001-02-28 | 2006-08-09 | アマノ株式会社 | Parking lot management device with acoustic monitoring |
| CN202650271U (en) * | 2011-11-24 | 2013-01-02 | 中船重工(武汉)凌久信息技术有限公司 | Acoustic magnetic composite carport sensor |
| CN102737411A (en) * | 2011-12-06 | 2012-10-17 | 浙江创泰科技有限公司 | Non-waiting parking management system based on RFID (radio frequency identification device) and sensor |
| CN102682765A (en) * | 2012-04-27 | 2012-09-19 | 中咨泰克交通工程集团有限公司 | Expressway audio vehicle detection device and method thereof |
| CN102722741A (en) * | 2012-06-15 | 2012-10-10 | 深圳市远望谷信息技术股份有限公司 | Vehicle data acquiring device and method based on active radio frequency identification |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104658306A (en) | 2015-05-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN106875733B (en) | Multi-sensor low-power-consumption vehicle detection system and method based on self-adaptive environment | |
| EP3164293B1 (en) | System and method for adaptive charging compliance control | |
| CN109345821B (en) | Bluetooth beacon electronic fence parking control method, device and system and vehicle | |
| CN107251125B (en) | Method for operating a sensor device and sensor device | |
| CN104658307A (en) | Vehicle in-place detection method and parking place monitoring device | |
| CN103942965B (en) | geomagnetic vehicle detector | |
| CN104658306B (en) | vehicle on-position detection method and parking space monitoring device | |
| CN105118297A (en) | System and method for detecting and identifying type of vehicle | |
| CN104658267B (en) | A kind of vehicle state detection method and vehicle condition detection device | |
| CN102360523B (en) | Wireless vehicle detector and method for turning on and off detector | |
| CN105788355A (en) | System and method of monitoring parking space based on Beacon technology | |
| CN103366585A (en) | Wireless sensor network-based self-adaptive traffic light control system | |
| CN104318784A (en) | Bluetooth vehicle counter and counting method thereof | |
| JP2017128938A (en) | Vehicle detector and vehicle detection method | |
| CN105825682B (en) | Earth magnetism vehicle detection apparatus | |
| CN111591154A (en) | Dynamic magnetic coupling resonant array method and system supporting wireless charging of electric automobile | |
| CN100501796C (en) | Minisize buried automobile detector | |
| CN203311648U (en) | Ultrasonic wave detector of parking space | |
| CN203012809U (en) | Satellite positioning vehicle monitoring vehicle-mounted terminal system | |
| CN104299422A (en) | Geomagnetic vehicle detection device and control method thereof | |
| CN104700626B (en) | A kind of low frequency detection device, vehicle enter an identification device, system and method | |
| CN203732591U (en) | Detection system and detection device for magnetic field and electromagnetic field interfering electricity stealing | |
| TWI461721B (en) | Object detection device and method thereof | |
| KR20090056053A (en) | Vehicle management apparatus and method | |
| CN103630717A (en) | Detection system and detection device for magnetic field and electromagnetic field interference and electricity larceny |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |