TW202001713A - Parking space state management system for vehicle entry and exit detection with low frequency signals and geomagnetic variations and its detection method - Google Patents

Abstract

A parking space state management system for vehicle entry and exit detection with low frequency signals and geomagnetic variations and its detection method, which includes a low frequency sensing module and a geomagnetic sensing module, the low frequency sensing module with low power consumption first detects whether a vehicle is moving in or out, and then the geomagnetic sensing module re-detects and verifies whether a vehicle is moving in or out, when the low frequency sensing module has not detected the vehicle, the geomagnetic sensing module is dormant, which not only saves power consumption, but also reduces the probability of mismeasurement by secondary detection.

Description

Parking grid state management system and method for jointly detecting vehicle entry and exit with low-frequency signal and geomagnetic change

The invention relates to a detection system for detecting the entry and exit of a vehicle, and in particular to a state management system for a common detection of entry and exit of a vehicle using low-frequency signals and geomagnetic changes.

The invention also relates to the detection method of the aforementioned parking grid state management system that uses low-frequency signals and geomagnetic changes to jointly detect the entry and exit of a vehicle.

Please refer to FIG. 1, in order to facilitate the user to find the parking space, there is a parking space state detection system 10 on the market, which is mainly provided with a sensing device 11 on the parking space for sensing the entry and exit of the vehicle. The device 11 is signal-connected to a cloud host 12, and the cloud host 12 is signal-connected to a mobile device 13. The sensing device 11 detects vehicle access and transmits its signal to the cloud host 12 for storage, and the action The device 13 is in signal connection with the cloud host 12 and is a terminal. The mobile device 13 is provided for users to input or output to query the parking grid data stored in the cloud host 12. The user can use the mobile device 13 to The data stored in the cloud host 12 finds empty parking spaces, so as to reduce the time for users to find empty parking spaces.

In particular, the aforementioned sensing device 11 mostly uses infrared optical blocking detectors, pressure detection detectors, millimeter wave detectors, geomagnetic detectors, etc., and the aforementioned various detections The detection time of the device must be set to normal detection or interval time detection. The interval time detection can be detected every 30 seconds, which means that the sensing device 11 must continuously or intermittently transmit signals to sense the parking grid. Is there a vehicle going in and out, and transmits a signal to the cloud host 12 when the sensing device 11 senses the vehicle in and out to change the data in the cloud host 12.

However, the sensing device 11 must detect whether there is a vehicle in or out at a normal or interval time, and the infrared optical interception detector, pressure detection detector, millimeter wave detector, and geomagnetic detector consume high power. , Causing it to consume a lot of power during normal or interval detection.

And whether the sensing device 11 uses an infrared optical interception detector, a pressure detection detector, a millimeter wave detector, or geomagnetic detection, when there is a non-vehicle object on the parking bay, the sensing device 11 11 all have the opportunity to misdetect, resulting in inaccurate data in the cloud host 12.

In view of this, it is indeed necessary to provide a new detection method to solve the misdetection and the lack of power consumption.

The first object of the present invention is to solve the lack of misdetection of the sensing device, so that it can more accurately detect the entry and exit of vehicles.

The second object of the present invention is to solve the lack of power consumption of the sensing device, thereby saving its power consumption.

In order to achieve the first and second objects mentioned above, the present invention is a parking grid state management system that uses low-frequency signals and geomagnetic changes to jointly detect vehicle entry and exit, which is used to connect with a cloud host information, and the low-frequency signals The parking space status management system that detects the in and out of the vehicle together with the geomagnetic change includes:

A low-frequency sensing module has a low-frequency sensing device, a first wireless communication unit, a first wireless receiving unit and a first control unit. The low-frequency sensing device is connected to the first judgment unit for information detection To test the vehicle, the first judging unit is connected to the first wireless communication unit for judging whether the signal detected by the low-frequency sensing device has a vehicle entering or leaving, the first control unit and the first wireless receiving unit Information connection, and the first control unit is connected to the low-frequency sensing device;

A geomagnetic sensing module has a second wireless receiving unit, a second control unit, a geomagnetic sensing device, a second judgment unit and a second wireless communication unit, the second wireless receiving unit and the first The wireless communication unit is connected to the signal, and the second wireless receiving unit is connected to the second control unit information. The geomagnetic sensing device has a standby unit, the standby unit is used to allow the geomagnetic sensing device to enter a sleep state or In the detection state, the second control unit is connected to the standby unit of the geomagnetic sensing device and is used to put the geomagnetic sensing device into a sleep state or a detection state, and the geomagnetic sensing device and the second judgment unit Information connection, the second judging unit is used to judge whether the geomagnetic sensing device detects a vehicle, and generates a measured vehicle signal or an unmeasured vehicle signal, the second judgment unit and the second wireless communication unit Information connection, the second wireless communication unit is in information connection with the first wireless receiving unit and the cloud host;

In this way, when the second wireless communication unit receives the measured vehicle signal, the second wireless communication unit signal is connected to the cloud host;

When the second wireless communication unit receives the unmeasured vehicle signal, the second wireless communication unit signal is connected to the first wireless receiving unit.

The method of use includes a low-frequency sensing step: the presence or absence of a vehicle is detected by the low-frequency sensing device until the low-frequency sensing device detects the vehicle;

A geomagnetic wake-up step: wake up the geomagnetic sensing device by the standby unit;

A geomagnetism detection step: sensed by the geomagnetism sensing device, when the second judgment unit judges that the vehicle has not been detected, the undetected vehicle signal is transmitted to the second wireless communication unit, and the second wireless communication The unit transmits a signal to the first wireless receiving unit, so that the first control unit transmits a signal to the low-frequency sensing device, and then the low-frequency sensing device re-senses the vehicle; when the second judgment unit judges that the vehicle is detected, Then, the second judgment unit will transmit the measured vehicle signal to the second wireless receiving unit, and the second wireless receiving unit then transmits the signal to the cloud host;

A storage step: after receiving the data from the second wireless receiving unit, the cloud host stores the data in the cloud host.

The low-frequency sensing module and the geomagnetic sensing module successively detect the vehicle, which not only allows the geomagnetic module to save power when it is in a sleep state, but also uses the geomagnetic model when the low-frequency sensing module detects the vehicle. The group conducts secondary detection to confirm that the detection is correct, thereby achieving power saving and improving the accuracy of detection.

Please refer to FIG. 2 to FIG. 3, the present invention is a parking space state management system that uses low-frequency signals and geomagnetic changes to jointly detect vehicle entry and exit, which is used for information connection with a cloud host 20, and the low-frequency signals and geomagnetic changes The parking lot status management system that jointly detects the entry and exit of vehicles includes:

A low-frequency sensing module 30 has a low-frequency sensing device 31, a first judgment unit 32, a first wireless communication unit 33, a first wireless receiving unit 34 and a first control unit 35, the low-frequency sensing The device 31 is signal-connected to the first judging unit 32, and the low-frequency sensing device 31 can detect low-frequency vibration generated when starting an engine or a motor, such as a gasoline car, a diesel car, a hybrid electric car, or an electric car, etc. The measured low-frequency signal is transmitted to the first judgment unit 32, and the first judgment unit 32 is used to judge whether the signal detected by the low-frequency sensing device 31 has a vehicle entering or leaving, and the first judgment unit 32 and the The first wireless communication unit 33 is connected to information, the first control unit 35 is connected to the first wireless receiving unit 34, and the first control unit 35 is connected to the low-frequency sensing device 31;

In this embodiment, the low-frequency sensing device 31 can detect low-frequency vibration signals of 50KHZ~300KHZ; and the low-frequency sensing device 31 is provided with a delay detection unit 311, and the delay detection unit 311 is used to control the The sensing time of the low-frequency sensing device 31 enables the low-frequency sensing device 31 to detect the low-frequency vibration for a period of time before transmitting the signal to the first judging unit 32 by the delay detection unit 311, thereby reducing The probability of this low-frequency sensing device 31 misjudge.

A first power unit 40 is electrically connected to the low-frequency sensing module 30. The first power unit 40 is used to provide power to the low-frequency sensing module 30.

A geomagnetic sensing module 50 has a second wireless receiving unit 51, a second control unit 52, a geomagnetic sensing device 53, a second judging unit 54 and a second wireless communication unit 55, the second wireless The receiving unit 51 is in signal connection with the first wireless communication unit 33, and the second wireless receiving unit 51 is in information connection with the first wireless communication unit 33. The geomagnetic sensing device 53 has a standby unit 531 in the standby unit 531 is used to put the geomagnetism sensing device 53 into a sleep state or a detection state, the second control unit 52 is connected to the standby unit 531 of the geomagnetism sensing device 53 and is used to put the geomagnetism sensing device 53 into sleep Status or detection status, and the geomagnetic sensing device 53 is in information connection with the second judging unit 54, the second judging unit 54 is used to judge whether the geomagnetic sensing device 53 detects the vehicle, and generates a measured Vehicle signal or an undetected vehicle signal, the second judgment unit 54 is connected to the second wireless communication unit 55, and the second wireless communication unit 55 is connected to the first wireless receiving unit 34 and the cloud host 20 connection;

A second power unit 60 is electrically connected to the geomagnetic sensing module 50. The second power unit 60 is used to provide power to the geomagnetic sensing module 50.

In this way, when the second wireless communication unit 55 receives the measured vehicle signal, the second wireless communication unit 55 signal is connected to the cloud host 20 and stores the corresponding data in the cloud host 20;

When the second wireless communication unit 55 receives the undetected vehicle signal, the second wireless communication unit 55 signal is connected to the first wireless receiving unit 34, and the first wireless receiving unit 34 is connected to the first control The unit 35 transmits the message to the low-frequency sensing device 31 through the first control unit 35, so that the low-frequency sensing device 31 re-detects whether a vehicle is driving in or out.

The above is the structural configuration of the present invention and its connection relationship. The use steps of the present invention are as follows:

A low-frequency sensing step A: the low-frequency sensing device 31 detects whether there is a vehicle, and the delay detection unit 311 causes the low-frequency sensing device 31 to detect a predetermined time before the The low-frequency sensing device 31 transmits a signal to the first judging unit 32, and the first judging unit 32 judges whether a vehicle is going out or entering. If the first judging unit 32 judges that a vehicle is going out or entering, then The first judging unit 32 transmits the signal to the first wireless communication unit 33, and then transmits the signal to the second wireless receiving unit 51 through the first wireless communication unit 33;

In a geomagnetic wake-up step B, the second wireless receiving unit 51 transmits a signal to the second control unit 52, and the second control unit 52 enables the standby unit 531 to change the geomagnetic sensing device 53 from the sleep state To detection state;

In a geomagnetic detection step C, the geomagnetic sensing device 53 senses whether a vehicle is driving in or out. When the second judgment unit 54 judges that an undetected vehicle is detected, the undetected vehicle signal is transmitted to the The second wireless communication unit 55, after receiving the unmeasured vehicle signal, transmits the signal to the first wireless receiving unit 34, and transmits the signal to the first wireless receiving unit 34 The first control unit 35 causes the first control unit 35 to transmit a signal to the low-frequency sensing device 31, and then the low-frequency sensing device 31 re-senses whether a vehicle is driving in or out; when the second judgment unit 54 When judging the measured vehicle, the second judging unit 54 transmits the measured vehicle signal to the second wireless communication unit 55, and the second wireless communication unit 55 receives the measured vehicle signal and then transmits the signal to the cloud host 20;

In a storage step D, after receiving the data from the second wireless communication unit 55, the cloud host 20 stores the data in the cloud host 20.

Compared with the detection methods of many different methods, the power consumption of the low-frequency sensing device 31 is relatively low. In order to prevent some special parking environments, such as: basements, roadsides, etc., it is easily received outside the car engine or motor The location of the vibration, in order to prevent the low frequency sensing device 31 from misdetecting, when the low frequency sensing device 31 receives the vibration of the corresponding frequency band, the delay detection unit 311 causes the low frequency sensing device 31 to detect the low frequency vibration The signal can be transmitted to the first judging unit 32 after a period of time, thereby reducing the probability of misdetection. When the first judging unit 32 judges that the vehicle is detected to be entering or exiting, then the first wireless communication is used The unit 33 transmits a signal to the second wireless receiving unit 51, and the second control unit 52 causes the standby unit 531 to switch the geomagnetism sensing device 53 from the sleep state to the detection state, and then the geomagnetism sensing The device 53 again detects whether a vehicle is entering or exiting. If the second determining unit 54 determines that the vehicle is not detected, the second wireless communication unit 55 transmits a signal to the first wireless receiving unit 34, the first wireless The receiving unit 34 transmits the signal to the first control unit 35 again, and the low frequency sensing device 31 is re-detected by the first control unit 35; if the second judgment unit 54 judges that the vehicle is detected, the first The two wireless communication units 55 transmit signals to the cloud host 20 to store data.

In the present invention, the low-frequency sensing module 30 with low power consumption first detects whether there is a vehicle, and when the low-frequency sensing module 30 confirms that there is a vehicle, the geomagnetic sensing module 50 is used for detection. Not only does the geomagnetic sensing module 50 save energy during sleep, but it also improves the accuracy of vehicle detection by secondary detection.

More preferably, the delay detection unit 311 enables the low-frequency sensing device 31 to detect the signal for a predetermined time before allowing the low-frequency sensing device 31 to transmit a signal to the first judgment unit 32, thereby improving the low-frequency sensing The accuracy of detection by the measuring device 31.

Knowledge 10‧‧‧Parking state detection system 11‧‧‧sensing device 12‧‧‧ cloud device 13‧‧‧Mobile device this invention 20‧‧‧ cloud host 30‧‧‧Low frequency sensing module 31‧‧‧Low-frequency sensing device 311‧‧‧Delay detection unit 32‧‧‧First judgment unit 33‧‧‧ First wireless communication unit 34‧‧‧The first wireless receiving unit 35‧‧‧ First control unit 40‧‧‧First power unit 50‧‧‧Geomagnetic sensing module 51‧‧‧Second wireless receiving unit 52‧‧‧Second control unit 53‧‧‧ Geomagnetic sensing device 531‧‧‧Standby unit 54‧‧‧Second Judgment Unit 55‧‧‧Second wireless communication unit 60‧‧‧second power unit A‧‧‧Low frequency sensing procedure B‧‧‧Geomagnetic wake-up procedure C‧‧‧ Geomagnetic detection steps D‧‧‧Storage procedure

Figure 1 is a diagram of a conventional parking grid state detection system. Figure 2 is a schematic diagram of the system structure of the present invention. Figure 3 is a flow chart of the method of use of the present invention.

20‧‧‧ cloud host

30‧‧‧Low frequency sensing module

31‧‧‧Low-frequency sensing device

311‧‧‧Delay detection unit

32‧‧‧First judgment unit

33‧‧‧ First wireless communication unit

34‧‧‧The first wireless receiving unit

35‧‧‧ First control unit

40‧‧‧First power unit

50‧‧‧Geomagnetic sensing module

51‧‧‧Second wireless receiving unit

52‧‧‧Second control unit

53‧‧‧ Geomagnetic sensing device

531‧‧‧Standby unit

54‧‧‧Second Judgment Unit

55‧‧‧Second wireless communication unit

60‧‧‧second power unit

Claims (5)

A parking grid state management system that uses low-frequency signals and geomagnetic changes to jointly detect vehicle entry and exit, which is connected to a cloud host information, and the parking grid state management system that uses low-frequency signals and geomagnetic changes to jointly detect vehicle entry and exit Including: a low-frequency sensing module with a low-frequency sensing device, a first wireless communication unit, a first judgment unit, a first wireless receiving unit and a first control unit, the low-frequency sensing device and the The first judging unit is connected to the information and used to detect the vehicle. The first judging unit is connected to the first wireless communication unit to determine whether the signal detected by the low-frequency sensing device has a vehicle entering or leaving. A control unit is connected to the information of the first wireless receiving unit, and the first control unit is connected to the low-frequency sensing device; a geomagnetic sensing module has a second wireless receiving unit, a second control unit, a Geomagnetic sensing device, a second judging unit and a second wireless communication unit, the second wireless receiving unit is signal-connected with the first wireless communication unit, and the second wireless receiving unit is information-connected with the second control unit , The geomagnetic sensing device has a standby unit for the geomagnetic sensing device to enter a sleep state or a detection state, the second control unit is connected to the standby unit of the geomagnetic sensing device and provides In order to put the geomagnetic sensing device into a sleep state or a detection state, and the geomagnetic sensing device is connected to the information of the second judging unit, the second judging unit is used to judge whether the geomagnetic sensing device detects the vehicle, And generate a measured vehicle signal or an unmeasured vehicle signal, the second judgment unit is connected to the second wireless communication unit information, and the second wireless communication unit is connected to the first wireless receiving unit and the cloud host information Connection; thereby, when the second wireless communication unit receives the measured vehicle signal, the second wireless communication unit signal is connected to the cloud host; when the second wireless communication unit receives the unmeasured vehicle signal At this time, the signal of the second wireless communication unit is connected to the first wireless receiving unit. As described in claim 1, the low-frequency signal and the geomagnetic change amount are used to jointly detect the parking space state management system of the vehicle, wherein the low-frequency sensing device can detect signals of 50KHZ~300KHZ. As described in claim 1, the parking space state management system that uses low-frequency signals and geomagnetic changes to jointly detect the in and out of the vehicle, wherein the low-frequency sensing device is provided with a delay detection unit, which is used for control The sensing time of the low-frequency sensing device enables the low-frequency sensing device to detect that low-frequency vibration must be detected for a period of time before the signal can be transmitted to the first judging unit through the delay detection unit. A method for using a parking space state management system for jointly detecting vehicle entry and exit with low-frequency signals and geomagnetic changes as described in claim 1 includes: a low-frequency sensing step: whether the low-frequency sensing device detects There is a vehicle until the low-frequency sensing device detects the vehicle; a geomagnetic wake-up step: wake up the geomagnetic sensing device by the standby unit; a geomagnetic detection step: sense by the geomagnetic sensing device when the first The second judging unit judges that the undetected vehicle transmits the undetected vehicle signal to the second wireless communication unit, and the second wireless communication unit transmits the signal to the first wireless receiving unit, so that a first control unit transmits Signal to the low-frequency sensing device, and then the low-frequency sensing device to re-sensing the vehicle; when the second judgment unit judges the measured vehicle, the second judgment unit will transmit the measured vehicle signal to the second wireless receiver Unit, the second wireless receiving unit transmits the signal to the cloud host; a storage step: after receiving data from the second wireless receiving unit, the cloud host stores the data in the cloud host. As described in claim 4, the parking space state management system that uses low-frequency signals and geomagnetic changes to jointly detect vehicle entry and exit, wherein, in the low-frequency sensing step, a low-frequency sensing device is required by a delay detection unit After detecting the vibration for a predetermined time, the low-frequency sensing device can transmit the signal to the first judgment unit.

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