EP3259745A1 - Procédé de fonctionnement d'un dispositif de détection et dispositif de détection - Google Patents

Procédé de fonctionnement d'un dispositif de détection et dispositif de détection

Info

Publication number
EP3259745A1
EP3259745A1 EP16701764.9A EP16701764A EP3259745A1 EP 3259745 A1 EP3259745 A1 EP 3259745A1 EP 16701764 A EP16701764 A EP 16701764A EP 3259745 A1 EP3259745 A1 EP 3259745A1
Authority
EP
European Patent Office
Prior art keywords
environment
sensor
data
sensor device
magnetic field
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Withdrawn
Application number
EP16701764.9A
Other languages
German (de)
English (en)
Inventor
Juan Nogueira-Nine
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP3259745A1 publication Critical patent/EP3259745A1/fr
Withdrawn legal-status Critical Current

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
    • G01V3/081—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 magnetic field is produced by the objects or geological structures
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/02—Systems using reflection of radio waves, e.g. primary radar systems; Analogous systems
    • G01S13/04—Systems determining presence of a target
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S15/00—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems
    • G01S15/02—Systems using the reflection or reradiation of acoustic waves, e.g. sonar systems using reflection of acoustic waves
    • G01S15/04—Systems determining presence of a target
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S17/00—Systems using the reflection or reradiation of electromagnetic waves other than radio waves, e.g. lidar systems
    • G01S17/02—Systems using the reflection of electromagnetic waves other than radio waves
    • G01S17/04—Systems determining the presence of a target
    • 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
    • G01V3/38—Processing data, e.g. for analysis, for interpretation, for correction
    • 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
    • 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
    • G08G1/04—Detecting movement of traffic to be counted or controlled using optical or ultrasonic detectors
    • 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
    • G08G1/145—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
    • 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
    • G08G1/147—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 within an open public zone, e.g. city centre
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/88—Radar or analogous systems specially adapted for specific applications
    • G01S13/93—Radar or analogous systems specially adapted for specific applications for anti-collision purposes
    • G01S13/931—Radar or analogous systems specially adapted for specific applications for anti-collision purposes of land vehicles

Definitions

  • the invention relates to a method for operating a sensor device for
  • the invention further relates to a sensor device for detecting an object.
  • the invention further relates to a computer program.
  • sensors are used to monitor parking spaces, which transmit the state of the parking lot to a control point.
  • the detection of the condition is usually either via magnetic field sensors, cameras or by emitting sensors such as ultrasonic or radar sensors.
  • the sensors are either permanently connected to a power grid or data network, which means a high outlay on installation. Or they are battery operated and communicate wirelessly with the inspection body.
  • the challenge with wireless systems is, in particular, to maximize battery life limited life. Disclosure of the invention
  • a method of operating a sensor device for detecting an object comprising first and second environmental sensors for detecting an environment of the sensor device, comprising the following steps:
  • a sensor device for detecting an object comprising:
  • a first and a second environmental sensor for detecting an environment of the sensor device
  • control device for controlling the surroundings sensors, which is designed to control the first environment sensor such that an environment of the sensor device is detected by means of the first environment sensor, the second environment sensor being deactivated, and
  • a processor configured to determine first environment data based on the detected environment; wherein the processor is further configured to determine whether the first environment data is sufficient to make a statement with a predetermined probability of whether an object is located in the environment
  • processor is further configured, if the first environment data is sufficient to determine, based on the first environment data, whether there is an object in the environment,
  • control device is formed when the first
  • Environment data is not sufficient to activate the deactivated second environment sensor and to control the activated second environment sensor such that by means of the second environment sensor an environment of the sensor device is detected
  • processor is further configured to determine second environment data based on the environment detected by the second environment sensor and to determine whether an object is located in the environment based on the second environment data.
  • a computer program which comprises program code for carrying out the method according to the invention when the computer program is executed on a computer.
  • the invention therefore includes, in particular and among other things, the idea of activating the second environmental sensor of a sensor device only if the measurement of the first environmental sensor is insufficient to say with a predetermined probability whether an object is present in the environment of the sensor device or Not.
  • the second environment sensor is not permanently, so permanently activated to detect the environment of the sensor device, an electrical energy consumption of the sensor device can be reduced in an advantageous manner. This is in comparison to a sensor device with two environment sensors, whereby both environment sensors carry out an environment detection permanently or at predetermined intervals.
  • the fact that the measurement of the first environment sensor is not sufficient can occur, for example, in the following situation: If a magnetic field sensor is the first
  • the Environment sensor is used to detect a vehicle, and if the Magnetic field sensor is located near a subway station or a station, it may happen that a passing train or a passing subway influence and change the magnetic field in the vicinity of the magnetic field sensor. As a result, a quality of a magnetic field measurement can be intimidated. It may thus come to an unclear Siutation in which the measurement of the first environment sensor is insufficient. The second environment sensor is then activated.
  • the sensor device can also be used in environments that do not have a wired power network for the purpose of power supply. Thus, an expense can be reduced in an installation of the sensor device.
  • the first and / or second environmental sensor is one of the following environmental sensors: ultrasound sensor, radar sensor, lidar sensor, laser sensor, infrared sensor, video sensor, magnetic field sensor, vibration sensor and microphone.
  • the first environment sensor and / or the second environment sensor are deactivated after the corresponding detection of the environment.
  • the technical advantage in particular that causes a power consumption of the sensor device can be further reduced.
  • an electrical energy consumption of the corresponding environmental sensor is further reduced in an advantageous manner. This means in particular that after detecting the environment by means of the first environment sensor, the first environment sensor is deactivated.
  • Deactivation in the sense of the present invention comprises in particular that the environment sensor is driven into a standby or standby mode.
  • deactivation in the sense of the present invention comprises that a power supply or generally an electrical energy supply for the environmental sensor (ie the first and / or the second
  • Activation in the sense of the present invention comprises in particular that the first respectively second surroundings sensor is awakened from a sleep state or standby state or standby state. In particular, activating comprises the fact that the first or second surroundings sensor is again connected to an electrical energy supply if it has previously been disconnected therefrom.
  • Whether or not there is an object in the environment is compared with an earlier result of a prior determination of whether an object is in the environment, and only if there is a difference between the current and past results, is the current result via a communication network is sent.
  • the technical advantage in particular that an electrical energy consumption of the sensor device can be reduced even further. Because only the current result is sent over the communication network when a difference between the current and the previous result has been determined. In particular, this advantageously has the effect that an existing data bandwidth can be used efficiently.
  • a result in the sense of the present invention comprises, in particular, that an object has been detected, ie that an object is present in the environment So in the environment.
  • a result includes in particular that no object was detected, ie no object is located in the environment.
  • the earlier result was determined analogously to the current result according to the method according to the invention or according to the sensor device according to the invention. This means that the environment of the sensor device was detected at a time earlier in time in order to determine whether or not there is an object in the environment. In another embodiment, it is provided that activating and
  • Disabling the second environmental sensor is performed by means of a switch which is connected between the second environment sensor and an electrical power supply.
  • a switch which is connected between the second environment sensor and an electrical power supply.
  • the switch is preferably controlled by means of the control device, ie in particular opened or closed.
  • the switch is an electronic switch.
  • the switch is a transistor, in particular a field-effect transistor.
  • the switch is a mechanical switch.
  • the activation by means of the switch comprises in particular that the switch is closed or that the electronic switch is so controlled (ie for example by means of the control device) that it becomes electrically conductive.
  • the deactivation by means of the switch comprises that the switch is opened or that an electronic switch is controlled such that it becomes non-conductive.
  • the activation and deactivation of the first environmental sensor is performed by means of a switch which is connected between the first environmental sensor and an electrical energy supply.
  • a switch which is connected between the electrical power supply and the first environment sensor.
  • This switch may be referred to, for example, as the first switch.
  • the switch connected between the second environment sensor and the electric power supply may be referred to, for example, as the second switch.
  • the first switch can be controlled, for example by means of the control device analogous to the second switch.
  • the first environment sensor is a magnetic field sensor and the second environment sensor is a radar sensor or wherein the first environment sensor is a magnetic field sensor and the second environment sensor
  • Environment sensor is an ultrasonic sensor or wherein the first environment sensor is a magnetic field sensor and the second environment sensor is an infrared sensor.
  • the magnetic field sensor as the first environment sensor, the technical advantage in particular is achieved that a simple and energy-saving sensory detection of the environment of the sensor device can be effected.
  • a sensory detection by means of a magnetic field sensor is sufficient to detect an object in the environment.
  • it can already be reliably determined by means of the magnetic field sensor, as a rule, whether there is an object in the environment or not.
  • a sensor as a second environment sensor that emits or detect ultrasound or electromagnetic radiation (radar sensor, infrared sensor) in particular the technical advantage causes that can be found particularly reliable, whether based on the corresponding environment measurement using the second environment sensor itself an object is in the environment or not.
  • the use of the radar sensor has the advantage that a reliable object detection under different environmental conditions is reliably possible.
  • a radar sensor can reliably detect the environment even if, for example, an infrared or an ultrasonic sensor can no longer reliably do so.
  • a detection sensitivity of an infrared respectively Ultrasonic sensor for example, if on the environmental sensor has accumulated snow or dirt.
  • the first environment sensor is a magnetic field sensor and the second environment sensor is a radar sensor
  • the processor is configured to process the raw radar sensor data in the time domain (time domain) to determine the second environment data based on the processing.
  • time domain time domain
  • the technical advantage is effected that a fast and efficient signal processing is possible.
  • a processing in the time domain is less expensive and faster than a processing in the frequency domain (frequency domain), as is customary in connection with radar sensors.
  • a departure from the conventional is provided. Therefore, raw data of a radar sensor can be processed less expensively in the time domain, in particular because they come directly from the radar sensor and correspond to a digital sampling of the analog measurement signal of the radar sensor. This simplifies processing.
  • Processing in the frequency domain comprises in particular a Fourier transformation of the raw data, which is more expensive.
  • the processing in the time domain is sufficient to make a statement as to whether an object is in the environment or not. Exact distances to the object are usually not necessary.
  • the object is a parked on a parking position vehicle or driving on a road vehicle or parked on a container storage container.
  • the sensor device can be used to detect or detect a busy state of a parking position.
  • a vehicle is detected at the parking position, it means that the parking position is occupied. If no vehicle is detected, this means that the parking position is free, that is unoccupied.
  • a result of an environment detection is here in particular that the parking position is occupied or vacant, that is unoccupied, is.
  • the sensor device can then be referred to in particular as a sensor device for detecting a busy state of a parking position. If the object is a vehicle traveling on a road, a traffic flow and / or a traffic density can thus be recorded or monitored by means of the sensor device. Such a sensor device can then be referred to in particular as a sensor device for monitoring or for measuring a traffic density or traffic rate.
  • the sensor device can detect or detect a busy condition of a container location if the object is a container.
  • control device is designed to deactivate the first environment sensor and / or the second environment sensor after the corresponding detection of the environment.
  • the processor is adapted to compare a current result of the determination whether there is an object in the environment with an earlier result of an earlier determination of whether there is an object in the environment a communication interface is provided, which is designed to transmit the current result over a communication network in the event of a difference between the current and the previous result.
  • an electrical power supply and a switch are provided, wherein the switch is connected between the second environment sensor and the electrical power supply, so that the activation and deactivation of the second environment sensor by means of the switch is feasible.
  • the activation then includes, in particular, a closing of the switch or a triggering of the electronic switch such that it is permeable or electrically conductive.
  • Deactivation comprises in particular opening the switch or activating the electronic
  • an electrical power supply and a switch are provided, which is connected between the first environment sensor and the electrical power supply, so that the activation and deactivating the first environmental sensor by means of the switch is feasible.
  • Such a switch can also be referred to as the first switch.
  • the switch which is connected between the second environment sensor and the electrical power supply, may be referred to in particular as the second switch.
  • Device features result analogously from corresponding process features and vice versa.
  • the sensor device is set up or designed to carry out or carry out the method according to the invention.
  • the method according to the invention operates the sensor device according to the invention.
  • an electrical power supply comprises one or more batteries and / or one or more accumulators.
  • a communication interface is provided, which is designed to transmit a result of the determination of whether an object is located in the environment via a communication network.
  • the sensor device comprises, for example, the communication interface.
  • the communication network comprises a WLAN network and / or a mobile radio network.
  • a communication via the communication network is encrypted or encrypted.
  • the processor and the control device are comprised by a microcontroller.
  • the processor or the control device or the communication interface or the microcontroller, respectively is switched after a measurement into a sleep mode or idle state or a standby state.
  • 1 is a flowchart of a method for operating a sensor device.
  • FIG. 2 shows a sensor device and FIG. 3 shows a further sensor device.
  • FIG. 1 shows a flow diagram of a method for operating a sensor device for detecting an object, which has a first and a second environment sensor for detecting an environment of the sensor device.
  • the method comprises the following steps: Detecting 101 an environment of the sensor device by means of the first
  • the first environment sensor is deactivated.
  • the second environment sensor is deactivated.
  • Fig. 2 shows a sensor device 201 for detecting an object.
  • the sensor device 201 comprises: a first environment sensor 203 and a second environment sensor 205 for detecting an environment of the sensor device 201,
  • control device 207 for controlling the environment sensors 203, 205, which is designed to control the first environment sensor 203 in such a way that an environment of the sensor device 201 is detected by means of the first environment sensor 203, the second environment sensor 205 being deactivated, and
  • a processor 209 configured to determine first environment data based on the detected environment
  • the processor 209 is further configured to determine whether the first environment data is sufficient to make a statement with a predetermined probability of whether there is an object in the environment
  • processor 209 is further configured when the first
  • Environment data is sufficient to determine, based on the first environment data, whether there is an object in the environment, wherein the controller 207 is formed when the first
  • Environment data is insufficient to activate the deactivated second environment sensor 205 and to control the activated second environment sensor 205 such that an environment of the sensor device 201 is detected by means of the second environment sensor 205,
  • processor 209 is further configured to determine second environment data based on the environment detected by the second environment sensor 205 and to determine whether an object is located in the environment based on the second environment data.
  • FIG. 3 shows a further sensor device 301.
  • the sensor device 301 comprises a first environment sensor 303 and a second environment sensor 305.
  • the sensor device 301 further comprises a microcontroller 307, which comprises a processor, not shown, and a control device, not shown, for controlling the environmental sensors 303, 305.
  • the microcontroller 307 is connected by means of data and control lines 309 with the two environment sensors 303, 305.
  • the sensor device 301 further comprises an electrical power supply 31 1, which is connected via a power line 313 to the microcontroller 307.
  • the electrical power supply 31 1 can supply the microcontroller 307 with electrical energy by means of the power line 313.
  • the electrical power supply 31 1 also supplies the first environment sensor 303 with electrical energy by means of a power line 313.
  • the first environment sensor 303 is connected directly to the electrical power supply 31 1 by means of the power line 313. This means that no switch is connected between the first surroundings sensor 303 and the electrical power supply 31 1.
  • the electric power supply 31 1 includes, for example, one or more batteries.
  • the electric power supply 31 1 includes, for example, a power circuit not shown in detail here.
  • the second environment sensor 305 is also powered by means of the electrical power supply 31 1 with electrical energy. However, here is a switch 315 between the electrical power supply 31 1 and the second
  • the Environment sensor 305 switched.
  • a power line 313 leads from the electrical power supply 31 1 to the switch 315.
  • a further power line 313 leads to the second surroundings sensor 305.
  • the second surroundings sensor can be completely separated from the electrical power supply 31 1 by means of the switch 315. Due to the possibility of a complete separation from the electrical power supply, an electrical energy consumption of the second environmental sensor 305 can be reduced.
  • the switch 315 is controlled by means of the microcontroller 307, ie in particular opened or closed.
  • the sensor device 301 further comprises a communication interface 317, which is designed as a wireless communication interface.
  • a power line 313 connects the communication interface 317 to the electrical power supply 31 1.
  • Data and control lines 309 lead from the two environment sensors 303, 305 to the wireless communication interface 317.
  • the wireless communication interface 317 By means of the wireless communication interface 317, a transfer of sensor data or results, which were determined based on the sensor data, ie generally on the environment data, possible and provided For example, the data or results are sent out over a communication network.
  • the following embodiment of a method according to the invention can be carried out:
  • An algorithm running on the microcontroller 307 activates the first environment sensor 303 at regular times and, for example, performs various measurements of the corresponding physical parameters.
  • the measured values and parameters specific to the measurement method such as a signal-to-noise ratio (SNR), filter parameters, number of examples per measurement performed, average mode and length, quantization errors, bandwidth, sampling frequency, etc. are sent to the microcontroller 307 transmitted and used as input to the algorithm mentioned.
  • SNR signal-to-noise ratio
  • filter parameters number of examples per measurement performed
  • average mode and length quantization errors, bandwidth, sampling frequency, etc.
  • the status change is communicated via the wireless communication interface 317 to a remote computer or server (not shown) and the first environment sensor 303 and the microcontroller 307 go back to sleep mode. Otherwise, if the measurement result was clear enough, the occupied status of the parking space has not changed since the last data transmission by means of the wireless communication interface 317, however, both the first environment sensor 303 and the microcontroller 307 immediately go into sleep mode.
  • the second environment sensor 305 is completely turned off at a very low leakage current by the switch 315, which may be generally configured as, for example, a power switch, when not in use.
  • the switch 315 is digitally controlled by the microcontroller 307, and thus in particular in one embodiment by a sampling algorithm.
  • the algorithm activates the second environmental sensor 305 according to the following exemplary steps:
  • the microcontroller 307 If the measurement result of the second environment sensor 305 indicates that the occupied status of a parking space has changed, the status change is communicated via the wireless communication interface 317, for example, to a system gateway and finally to the remote computer, and the microcontroller 307 enters the sleep mode , However, if the measurement result shows that the occupied status of the parking space has not changed since the last data transmission by means of the wireless communication interface 317, the microcontroller 307 immediately enters the idle mode.
  • the first environmental sensor 303 is a magnetic sensor (magnetic field sensor) and the second environmental sensor is a radar-based sensor element, ideally an ultra-wideband (UWB) and frequency-graded continuous wave radar receiver (FSCW).
  • UWB ultra-wideband
  • FSCW frequency-graded continuous wave radar receiver
  • the radar signal method is minimized by performing processing of the raw data provided by the radar unit in the time domain (time domain) and not in the frequency domain (as usual). frequency range). Signal processing is performed in microcontroller 307 and performing time-frequency domain signal analysis and processing requires high computational resources.
  • the cost of signal processing can be further reduced.
  • it is intended to select the frequency band in the 2.4 GHz ISM (Industrial, Scientific and Medical Band) for worldwide use.
  • the first environment sensor 303 is a magnetic sensor (magnetic field sensor) and the second environment sensor 305 is an ultrasonic sensor.
  • the concept of very low energy consumption in this management benefits from the very short measurement time required by the ultrasonic sensor.
  • signal processing is also kept to a minimum since it is usually not necessary to determine the actual distance (for example in cm) of the vehicle parked above the sensor, but merely to determine a YES / NO decision as to whether there is even a vehicle there.
  • the first environmental sensor 303 is a magnetic sensor (magnetic field sensor) and the second environmental sensor 305 is an infrared sensor.
  • the concept of very low power consumption in this embodiment benefits from the very short measurement time required by the infrared sensor and the lower power consumption of this sensor compared to the other two described embodiments.
  • the signal processing is also kept to a minimum since it is usually not necessary to determine the actual distance (for example in cm) of the vehicle parked above the sensor, but merely to determine a YES / NO decision as to whether there is even a vehicle there.
  • all three previous exemplary embodiments have the advantage that the power consumption can be reduced, which can thus increase the life of the sensor device.
  • all three sensor combinations provide the advantage that they are insensitive to changes, be it temporary or permanent changes in the sensed magnetic field due to changes in the environment (for example snow, rain, ice - especially in the case of the first embodiment with radar), electrical components the vehicle causing electromagnetic interference, the amount of metal contained in the vehicle, (transient) electromagnetic interference caused by passing trains, electric buses or trams when the sensor is outside.
  • the embodiment in which the radar sensor is used provides a further advantage which can not be achieved with the other two aforementioned sensor combinations: 1 .
  • Neither the embodiment in which the infrared sensor is used nor the one in which the ultrasonic sensor is used function outside, or at least only to a limited extent, when snow accumulates on the parking space sensor device.
  • the embodiment with the infrared sensor usually also does not work, or at least only to a limited extent, when dirt accumulates on the transparent surface necessary for the infrared sensor.
  • the parking space sensor device can not be used in areas where cars use tires with spikes in the winter (pins in the profile of the tires).

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  • Physics & Mathematics (AREA)
  • General Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Remote Sensing (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Electromagnetism (AREA)
  • Geology (AREA)
  • Environmental & Geological Engineering (AREA)
  • General Life Sciences & Earth Sciences (AREA)
  • Geophysics (AREA)
  • Acoustics & Sound (AREA)
  • Traffic Control Systems (AREA)
  • Testing Or Calibration Of Command Recording Devices (AREA)

Abstract

L'invention concerne un procédé pour faire fonctionner un dispositif de détection, destiné à détecter un objet, qui comprend des premier et second capteurs d'environnement destinés à détecter un environnement du dispositif de détection. Le procédé comprend les étapes consistant: à détecter un environnement du dispositif de détection au moyen du premier capteur d'environnement, pour déterminer des premières données d'environnement basées sur l'environnement détecté, le second capteur d'environnement étant désactivé, à déterminer si les premières données d'environnement sont suffisantes pour pouvoir se prononcer sur une probabilité prédéterminée qu'un objet se trouve dans l'environnement, si les premières données d'environnement sont suffisantes, à déterminer si un objet se trouve dans l'environnement sur la base sur des premières données d'environnement, si les premières données d'environnement sont insuffisantes, à activer le second capteur d'environnement désactivé, à détecter l'environnement du dispositif de détection au moyen du second capteur d'environnement, pour déterminer des secondes données d'environnement basées sur l'environnement détecté, - et à déterminer si un objet se trouve dans l'environnement sur la base des secondes données d'environnement. L'invention concerne en outre un dispositif de détection. L'invention concerne par ailleurs un programme d'ordinateur.
EP16701764.9A 2015-02-17 2016-01-27 Procédé de fonctionnement d'un dispositif de détection et dispositif de détection Withdrawn EP3259745A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102015202782.1A DE102015202782A1 (de) 2015-02-17 2015-02-17 Verfahren zum Betreiben einer Sensorvorrichtung und Sensorvorrichtung
PCT/EP2016/051633 WO2016131619A1 (fr) 2015-02-17 2016-01-27 Procédé de fonctionnement d'un dispositif de détection et dispositif de détection

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US10656299B2 (en) 2020-05-19
DE102015202782A1 (de) 2016-08-18
JP2018507481A (ja) 2018-03-15
CN107251125B (zh) 2021-05-14
JP6498310B2 (ja) 2019-04-10
US20170371060A1 (en) 2017-12-28
CN107251125A (zh) 2017-10-13

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