EP3707690A1 - Verfahren und vorrichtung zur bestimmung eines belegungszustands eines stellplatzes eines parkraums - Google Patents
Verfahren und vorrichtung zur bestimmung eines belegungszustands eines stellplatzes eines parkraumsInfo
- Publication number
- EP3707690A1 EP3707690A1 EP18796630.4A EP18796630A EP3707690A1 EP 3707690 A1 EP3707690 A1 EP 3707690A1 EP 18796630 A EP18796630 A EP 18796630A EP 3707690 A1 EP3707690 A1 EP 3707690A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- parking space
- magnetic field
- method step
- determining
- field values
- 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.)
- Withdrawn
Links
Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V3/00—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation
- G01V3/08—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices
- G01V3/087—Electric or magnetic prospecting or detecting; Measuring magnetic field characteristics of the earth, e.g. declination, deviation operating with magnetic or electric fields produced or modified by objects or geological structures or by detecting devices the earth magnetic field being modified by the objects or geological structures
-
- G—PHYSICS
- G08—SIGNALLING
- G08G—TRAFFIC CONTROL SYSTEMS
- G08G1/00—Traffic control systems for road vehicles
- G08G1/01—Detecting movement of traffic to be counted or controlled
- G08G1/042—Detecting movement of traffic to be counted or controlled using inductive or magnetic detectors
-
- 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
-
- 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
- G08G1/145—Traffic control systems for road vehicles indicating individual free spaces in parking areas where the indication depends on the parking areas
- G08G1/146—Traffic control systems for road vehicles indicating individual free spaces in parking areas where the indication depends on the parking areas where the parking area is a limited parking space, e.g. parking garage, restricted space
Definitions
- the invention relates to a method for determining an occupancy state of a parking space of a parking space.
- DE 19543151 AI discloses, in which an arrangement and a method for the unique detection of vehicles on traffic areas described
- the measurement is the local magnetic field, e.g. the magnet
- the magnetic field sensor is provided with additional components for magnetic flux concentration. Furthermore, the temperature-dependent characteristic of the magnetic field sensor
- the invention also relates to a device which is adapted to carry out a method according to the invention.
- the invention relates to a method for determining an occupancy state of a parking space of a parking space, comprising at least the following
- a. Detecting magnetic field values in the vicinity of the parking space in the direction of a first axis by means of a geomagnetic sensor unit over a predetermined period of time at a predetermined sampling rate, b. Calculating a sum of the magnetic field values detected within the predetermined period of time,
- a parking space here has at least one parking space.
- This parking space is suitably suitable for parking a motor vehicle on it.
- the parking space may be, for example, an ordinary parking lot or even a parking garage or a parking zone.
- Probability can be determined whether a parking space is occupied or not.
- the method can be used anywhere and is robust against external factors
- Magnetic field values y n can be determined. Due to the short duration, no Gaussian distribution of the magnetic field values results.
- the probability density function P in turn allows a conclusion as to whether the parking space is occupied or vacant.
- the fact that the probability density function P can be determined by the inverse Fourier transformation is disclosed, for example, in the publication "Universal Fluctuations in Correlated Systems” by Bramwell, ST et al. (Physical Review Letters, Vol. 84, No. 17, P3744ff.) , recognizing that this method of determining the occupancy state is applicable.
- the characteristic function ⁇ ⁇ defines a corresponding one
- logarithm of the characteristic function ⁇ ⁇ can be expressed as a series of the statistical moment r-th degree k r of the respective magnetic field value y n as:
- Magnetic field values y n the product of the characteristic functions ⁇ ⁇ of the individual
- the determination of the occupancy state of the parking space is carried out in method step f by comparing a value obtained by method step e with a predefined threshold value.
- the parking space is determined to be occupied if the value is greater than the threshold value.
- the advantage here is that the probability can be influenced by the choice of the threshold, with which is determined whether the pitch is occupied or free.
- method steps a to f are additionally carried out for magnetic field values in the direction of a second and / or a third axis, wherein the first, second and / or third axis are in particular perpendicular to one another.
- the advantage here is that a verification of the result of whether the parking space is occupied or free, can be performed.
- different settings can be used for each process run which detects the magnetic field values in the direction of another axis. For example, in the method in which magnetic field values in the direction of the x-axis are detected, the statistical
- the specific occupancy state can be forwarded, for example, to a parking guidance system, which causes a release or blocking of the parking space due to the occupancy state, or also processed internally by the device.
- the device can have a display by means of which it is clearly visible whether the parking space is free or occupied.
- the invention also relates to a device for determining a
- the device has a geomagnetic sensor unit and a processing unit.
- the processing unit has a geomagnetic sensor unit and a processing unit.
- Probability can be determined whether a parking space is occupied or not.
- the device can be used independently of location and, for example, already calibrated or initialized during production.
- Fig. 1 shows an embodiment of a device according to the invention for
- Fig. 2 shows an embodiment of a method according to the invention for
- FIG. 3 shows a diagram in which the characteristic functions for the two possible states of the parking space are shown.
- Fig. 1 shows an embodiment of a device according to the invention for determining an occupancy state of a parking space.
- the parking space 100 may be, for example, an ordinary parking lot or a parking garage or a parking zone. It would also be alternatively conceivable that the parking space 100 has only one parking space 110.
- the parking space 110 has a device 10.
- the device 10 may for example be embedded in the bottom of the parking space or mounted thereon. If the parking space 110 has a ceiling, the device 10 can alternatively also be arranged there.
- the device 10 has a geomagnetic sensor unit 20 and a processing unit 30.
- the geomagnetic sensor unit 20 is configured in particular as a three-axis sensor and connected to the processing unit 30, wherein this connection is configured wired, but could alternatively be wireless.
- the sensor unit 20 is designed as M EMS to detect the magnetic field in the vicinity of the parking space.
- the processing unit 30 is configured to perform a method according to the invention, which will be described in more detail below.
- the processing unit 30 could also be arranged externally, for example as a server.
- FIG. 2 shows an exemplary embodiment of a method according to the invention for determining an occupancy state of a parking space.
- the above period may therefore be considered as short.
- a sum F is calculated from the magnetic field values y n detected in method step a:
- a method step c the sum F calculated in method step b is normalized as a function of a standard deviation a y of the magnetic field values y n acquired in method step a.
- the standard deviation a y of the detected magnetic field values y n is determined and then the calculated sum F is divided by the standard deviation a y to obtain a normalized sum ⁇ ⁇ 0 ⁇ TM:
- a statistical moment of the rth degree k r is dependent on the sum normalized in method step c
- n and r are positive integers.
- a method step f the occupation state of the parking space 110 is determined with a predetermined probability as a function of the inverse Fourier transformation carried out in method step e.
- the corresponding value which is the inverse
- This threshold determines the predetermined probability with which a statement about the occupancy state of the parking space 110 can be made and can be determined, for example, during the initialization of the device during the manufacturing process. For example, if the inverse Fourier transform yields a value of 5000 and the
- Threshold is 3000, it can be assumed with a certain probability that the parking space 110 is occupied. All values above 3000 thus represent an occupied parking space. If the threshold value is chosen differently, the probability with which the statement can be made for the corresponding value changes whether the parking space 110 is occupied or free.
- the threshold can be determined, for example, by field trials.
- Fig. 3 shows a diagram in which the characteristic functions for the two possible states of the parking space are shown.
- the parking space 110 is either occupied, wherein the characteristic function for this state is shown as a solid line 51, or unoccupied, the characteristic function for this state is shown as a dashed line 52.
- the characteristic functions are characterized by a variety of Measurement series has been determined.
- the fluctuation of the magnetic field values is plotted on the x-axis:
- Pitch 110 is occupied or free.
Abstract
Description
Claims
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102017219654.8A DE102017219654A1 (de) | 2017-11-06 | 2017-11-06 | Verfahren und Vorrichtung zur Bestimmung eines Belegungszustands eines Stellplatzes eines Parkraums |
PCT/EP2018/079762 WO2019086488A1 (de) | 2017-11-06 | 2018-10-30 | Verfahren und vorrichtung zur bestimmung eines belegungszustands eines stellplatzes eines parkraums |
Publications (1)
Publication Number | Publication Date |
---|---|
EP3707690A1 true EP3707690A1 (de) | 2020-09-16 |
Family
ID=64100642
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP18796630.4A Withdrawn EP3707690A1 (de) | 2017-11-06 | 2018-10-30 | Verfahren und vorrichtung zur bestimmung eines belegungszustands eines stellplatzes eines parkraums |
Country Status (4)
Country | Link |
---|---|
EP (1) | EP3707690A1 (de) |
CN (1) | CN111344760A (de) |
DE (1) | DE102017219654A1 (de) |
WO (1) | WO2019086488A1 (de) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN112309131B (zh) * | 2019-07-30 | 2022-12-27 | 北京京东振世信息技术有限公司 | 停车位状态监测方法与装置、存储介质、电子设备 |
WO2021114046A1 (zh) * | 2019-12-09 | 2021-06-17 | 北醒(北京)光子科技有限公司 | 一种停车位监测系统及方法 |
Family Cites Families (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE19543151C2 (de) | 1995-11-18 | 2000-08-24 | Bratge Birgit | Anordnung zur Fahrzeugerfassung und Verfahren zu deren Betrieb |
WO2001078005A2 (en) * | 2000-04-11 | 2001-10-18 | Cornell Research Foundation, Inc. | System and method for three-dimensional image rendering and analysis |
US7136765B2 (en) * | 2005-02-09 | 2006-11-14 | Deepsea Power & Light, Inc. | Buried object locating and tracing method and system employing principal components analysis for blind signal detection |
DE102008005471B4 (de) * | 2008-01-21 | 2010-10-07 | Mechatronic Ag | System und Verfahren zur Erfassung von Fahrzeugen |
WO2010069002A1 (en) * | 2008-12-19 | 2010-06-24 | Park Assist Pty Ltd | Method, apparatus and system for vehicle detection |
US20110218940A1 (en) * | 2009-07-28 | 2011-09-08 | Recharge Power Llc | Parking Meter System |
FR3004841B1 (fr) * | 2013-04-22 | 2016-09-23 | Ineo | Procede et dispositif de gestion dynamique de la mobilite urbaine |
WO2014186787A2 (en) * | 2013-05-17 | 2014-11-20 | fybr | Distributed remote sensing system sensing device |
CN106875740A (zh) * | 2017-04-26 | 2017-06-20 | 武汉拓宝科技股份有限公司 | 联合地磁场和无线信号质量的车位检测方法与系统 |
-
2017
- 2017-11-06 DE DE102017219654.8A patent/DE102017219654A1/de not_active Withdrawn
-
2018
- 2018-10-30 WO PCT/EP2018/079762 patent/WO2019086488A1/de unknown
- 2018-10-30 EP EP18796630.4A patent/EP3707690A1/de not_active Withdrawn
- 2018-10-30 CN CN201880071740.0A patent/CN111344760A/zh active Pending
Also Published As
Publication number | Publication date |
---|---|
CN111344760A (zh) | 2020-06-26 |
WO2019086488A1 (de) | 2019-05-09 |
DE102017219654A1 (de) | 2019-05-09 |
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