A parking management identification method and related equipment

Abstract

The present invention proposes a parking management non-image recognition related device and its installation calibration and operation method; the single-parking space roadside equipment and multi-parking space roadside equipment involved at least include: a microprocessor and an online data communication interface connected thereto by wire, a national standard ETC 5.8GHz transceiver and wake-up device and its transceiver antenna; the single-parking space roadside equipment can further increase the use of long-distance detection technology to identify various predefined events before and after the vehicle enters and exits the parking space; at the same time, by pre-calibrating the maximum gain direction of the ETC transceiver antenna, a wireless wake-up mechanism is used to realize the communication linkage data interaction of the ETC electronic tag OBU in the fixed parking area, so as to realize the accurate matching of the vehicle and the parking space; the new method is generally applicable to various common one-line and non-line parking space configurations, and can effectively make up for the problems that are difficult to overcome and solve by image recognition itself, which is conducive to increasing product coverage and reducing operation and maintenance costs to a greater extent.

Description

Technical Field

[0001] The present invention relates to a vehicle parking information management method and equipment in the field of intelligent transportation and the Internet of Things, and in particular to a parking management identification method and related equipment that can complement image recognition technology. Background Art

[0002] At present, with the large-scale promotion and implementation of smart parking projects in various places, it is generally reflected that several prominent problems need to be further overcome and improved: 1. The geomagnetic + PDA model is the current mainstream. In the early stage of the project introduction, this model has a huge effect on the transformation, training and adaptation of drivers' parking habits. However, after the model is formed, the operation is unsustainable due to high personnel costs; in addition, geomagnetic also has the construction coordination problem of closing roads and clearing parking spaces for installation, and the problem of reduced detection accuracy or even failure in the environment covered by ice, snow and rain. Changing the installation location and detection method without affecting the detection accuracy, and further intelligentizing and reducing the number of people in operation and management are urgent needs of the market and the inevitable direction of the development of automatic vehicle detection and automatic identification technology in the future; 2. .ETC was introduced into cities from highways, but has not been able to effectively solve the problem of the implementation of the on-street parking management business, which is the most urgent need of the industry. There are basically no solutions available for implementation and reference, resulting in a high failure rate of ETC card reading communication and serious waste of OBU vehicle-mounted electronic tag resources; In addition, in the technical solutions stated in the existing invention application "A smart parking method and system" (application number: 202010694803.7), the industry is very concerned about whether there are more effective and easy-to-install (multi-) parking space roadside equipment available in the application scenario of roadside parking in a straight line, so as to further expand the coverage of the existing smart parking back-end system (hereinafter referred to as the "back-end system"), rather than being limited to the existing expensive technology and complex implementation of phased array antenna solutions; 3 Parking management image recognition technology based on computer vision is in its infancy and has great potential, but the technology has its own blind spots that are difficult to overcome, such as various occlusion problems, light problems, interference problems, and algorithm parameter overfitting problems. As a result, once the accuracy of parking space occupancy detection and license plate recognition reaches 95%, it is difficult to move forward and achieve greater results. There is still a big gap from the business requirements of unmanned and fully automatic management. It is urgent to use other non-image recognition technologies to supplement it to ensure satisfactory all-time and all-weather comprehensive operation results. Summary of the invention

[0003] The technical problem to be solved by the present invention is to avoid the deficiencies of the above-mentioned prior art and propose a parking management identification method and related equipment.

[0004] The present invention can solve the technical problem by the following technical solution: a parking management identification method is proposed, comprising the following steps:

[0005] A. The multi-parking roadside equipment can pre-set the list of single-parking roadside equipment to be awakened in response to the new event and send it to the single-parking roadside equipment in advance, and then choose one of the following operation plans:

[0006] Solution 1: The multi-parking roadside equipment transmits a wake-up signal to the fixed parking area, searches for and interacts with the awakened ETC electronic tag OBU for business data; the single-parking roadside equipment receives the list and is in the list, or is awakened by the wake-up signal and does not have the list first, then immediately listens and collects the uplink information transmitted by the OBU in its corresponding parking space;

[0007] Solution 2: The multi-parking roadside equipment transmits a wake-up signal to the fixed parking area; the single-parking roadside equipment is awakened by the wake-up signal, and if it is in the list or there is no list first, it immediately searches for the awakened ETC electronic tag OBU in its corresponding parking space and interacts with the service data;

[0008] B. If the reporting conditions are met, the single-parking-space roadside device reports the required service data including the OBU license plate information and / or MAC address code to the back-end system and / or the multi-parking-space roadside device, and then goes into sleep mode to end the wake-up linkage operation; C. The single-parking-space roadside device wakes up at a fixed time and detects the dynamic signal changes of vehicles entering and exiting the corresponding parking space through the detector to identify events including "vehicle about to enter the parking space, vehicle entering the parking space is stopped, vehicle about to leave the parking space, and no vehicle in the parking space". If a new event occurs, the required service data is reported to the back-end system and / or the multi-parking-space roadside device, and then goes into sleep mode.

[0009] The present invention also proposes a method for calibrating the installation of a parking management and identification related equipment in a straight line, including: 1. Install a multi-parking type roadside device for unified management for every four consecutive parking spaces, calibrate the trisection point of the front side of the curb line segment of the first parking space, install the multi-parking type roadside device at a suitable position of the curb platform near the point, and install the multi-parking type roadside device at a height of at least 2.7 meters. The center point of the maximum gain direction of the antenna communicating with the OBU is locked at the trisection point of the road side of the rear line segment of the fourth parking space, or the middle point of the rear line segment of the third parking space; 2. From the second to the fourth parking spaces, install a single-parking type roadside device on the curb at the intersection of the front line and the curb line of each parking space. The wake-up receiving antenna of the single-parking type roadside device and the transceiver antenna communicating with the OBU have been pre-calibrated for spatial selection at the factory. The on-site installation ensures that the wake-up receiving antenna is on one side of the multi-parking type roadside device; 3. By migrating the single-parking roadside equipment corresponding to the first parking space to the multi-parking roadside equipment or its fixed pole through functional integration, the same usage effect can be achieved while further shortening the wake-up distance of the last parking space in exchange for a higher OBU communication success rate.

[0010] The present invention also proposes a parking management and identification single-parking space roadside device and a multi-parking space roadside device, which at least includes: a microprocessor and an online data communication interface connected thereto by wire, a national standard ETC 5.8GHz transceiver and wake-up device and its transceiver antenna; the national standard ETC The 5.8GHz transceiver and wake-up device and its transceiver antenna are the communication connection components for the microprocessor to transmit air data, real-time authentication, encrypted communication or complete financial transactions with external devices and the national standard ETC on-board unit OBU; when the single-parking type roadside equipment and the multi-parking type roadside equipment are used in pairs, one multi-parking type roadside equipment can manage one or more single-parking type roadside equipment, and the two can achieve communication docking including sending response wake-up lists and / or reporting business data through their respective online data communication interfaces; during installation and operation, by pre-calibrating the maximum gain direction of the transceiver antenna, a wireless wake-up mechanism is used to realize the communication linkage data interaction of the ETC electronic tag OBU in the fixed parking area, without the need to use image recognition or phased array antennas with high cost and technical complexity, the OBU license plate information and / or MAC address encoding can be obtained, and the accurate matching of vehicles and parking spaces can be achieved at the same time.

[0011] As a further improvement of the present invention, the parking management and identification single-parking space roadside equipment also includes: a detector; the detector is installed inside or outside the single-parking space roadside equipment, and the microprocessor of the single-parking space roadside equipment can detect and analyze the presence, distance and / or moving direction of a specific target in the parking space by using the detector, and provide relevant event identification information including "vehicle is about to enter the parking space, the vehicle is stopped in the parking space, the vehicle is about to leave the parking space, and there is no vehicle in the parking space" to the back-end system and / or multi-parking space roadside equipment through a wired or wireless connection; the wireless connection must meet the prerequisite that the detector and the online data communication interface of the single-parking space roadside equipment can communicate and dock; the detector includes: a combination of one or more of a geomagnetic detector, a TMR vehicle detector, an infrared detector, an ultrasonic detector, and a radar ranging module; the radar ranging module is a working frequency of 24GHz, 77GHz or 79GHz. The frequency band can detect and measure the distance of target objects as far as 3 meters or more. The target distance calculation can be completed by the microprocessor through the interface, or the target distance calculation can be completed by the built-in MCU and then the result is output to the microprocessor; the TMR vehicle detector adopts tunnel magnetoresistance (Tunneling Magneto Resistive, referred to as TMR) sensor technology to detect vehicles, has ultra-high magnetic sensitivity detection capability, wide dynamic range, good linearity, and small hysteresis, and can detect metal objects that meet the characteristics of vehicles at a distance of up to 2 meters or more.

[0012] Preferably, the microprocessor has the characteristics of low power consumption and high computing performance, and has an integrated ADC and / or DAC converter on chip; the online data communication interface refers to the external connection interface for the microprocessor to communicate with external devices, vehicle detectors, and back-end systems in a network, including: wired and / or wireless data communication interfaces, the wired data communication interface includes UART, RS232 / RS485 / RS422, USB or TCP / IP network interface; the wireless data communication interface includes: NB-IOT communication module, 470-490MHz Lora / LoraWAN / CLAA wireless communication module, 2.45GHz / 433MHz wireless transceiver, 4G / 5G wireless communication module, WiFi / BLE low-power Bluetooth / ANT / ZigBee or a specific protocol wireless communication module and its matching transceiver antenna, one or more combinations thereof.

[0013] Preferably, the national standard ETC 5.8GHz transceiver and wake-up device at least includes: a 5.8GHz national standard ETC RF transceiver chip and a RF front-end module; the 5.8GHz national standard ETC RF transceiver chip is BK5823, BK5822 or BK5863N of Broadcom Integrated Circuit (Shanghai) Co., Ltd.; the RF front-end module is Qorvo's QPF4530, QPF4578 or QPF4588.

[0014] The present invention also proposes a national standard ETC 5.8GHz transceiver and wake-up device, which is applied to single-parking roadside equipment, including: Broadcom BK5823 national standard ETC 5.8GHz transceiver, Skyworks SKY13351-378LF RF switch, QorvoQPF4530 or QPF4578 RF front-end module; the RFOP RF output pin of the BK5823 is wired to the TX of the QPF4530 or QPF4578 through a matching circuit; the INPUT pin of the SKY13351-378LF is wired to the RFIN pin of the BK5823 through a matching circuit, the OUTPUT1 pin of the SKY13351-378LF is wired to the TX of the QPF4530 or QPF4578 through a matching circuit, and the OUTPUT2 pin of the SKY13351-378LF is wired to the wake-up receiving antenna through a matching circuit; the ANT pin of the QPF4530 or QPF4578 is wired to the transceiver antenna through a matching circuit; the BK5823 is wired to the microprocessor in the single-parking roadside equipment through SPI and the wake-up signal pin.

[0015] The present invention also proposes a national standard ETC 5.8GHz transceiver and wake-up device, which is applied to single-parking roadside equipment or multi-parking roadside equipment, including: Broadcom BK5823 national standard ETC 5.8GHz transceiver, Qorvo QPF4578 or QPF4530 RF front-end module; the RFOP RF output pin and RFIN RF input pin of the BK5823 are respectively connected to the TX and RX of the QPF4578 or QPF4530 through a matching circuit; the ANT pin of the QPF4578 or QPF4530 is connected to the transceiver antenna through a matching circuit; the BK5823 is connected to the microprocessor in the single-parking roadside equipment or the multi-parking roadside equipment through an SPI pin.

[0016] Finally, the present invention also proposes a vehicle detector, which at least includes: a microprocessor and an online data communication interface connected to it by wire, a radar ranging module and a TMR vehicle detector; the vehicle detector uses long-distance detection technology and can be installed in an open area inside or outside the curb or parking space to replace the traditional short-distance geomagnetic vehicle detector installed and used under the existing vehicle chassis; the vehicle detector can detect and identify various predefined events before and after the vehicle enters and exits the parking space, specifically, the microprocessor uses the radar ranging module to detect objects and their distances as far as 3 meters or more at a regular time, and further detects whether the object is a metal object through the TMR vehicle detector when the preset conditions are met, the microprocessor performs comprehensive analysis and event identification based on preset characteristic parameters, and provides relevant event identification information including "the vehicle is about to enter the parking space, the vehicle stops in the parking space, the vehicle is about to leave the parking space, and there is no vehicle in the parking space" to the back-end system and / or other external devices through wired or wireless connection; the microprocessor has low power consumption and high computing performance characteristics, and an ADC and / or DAC converter is integrated on the chip; the radar ranging module is a 24GHz, 77GHz or 79GHz The frequency band can detect and measure the distance of target objects as far as 3 meters or more. The target distance calculation can be completed by the microprocessor through the interface, or the target distance calculation can be completed by the built-in MCU and then the result is output to the microprocessor; the TMR vehicle detector uses tunneling magnetoresistance (TMR) sensor technology to detect vehicles, has ultra-high magnetic sensitivity detection capability, wide dynamic range, good linearity, and small hysteresis, and can detect metal objects that meet the characteristics of vehicles at a distance of up to 2 meters or more; the online data communication interface refers to the external connection interface for the microprocessor to communicate with external devices and back-end systems in networking, including: wired and / or wireless data communication interfaces, the wired data communication interfaces include UART, RS232 / RS485 / RS422, USB or TCP / IP network interfaces; the wireless data communication interfaces include: NB-IOT communication module, 470-490MHz Lora / LoraWAN / CLAA wireless communication module, 2 .A combination of one or more of a 45GHz / 433MHz wireless transceiver, a 4G / 5G wireless communication module, a WiFi / BLE low-power Bluetooth / ANT / ZigBee or a specific protocol wireless communication module and its supporting transceiver antenna.

[0017] Compared with the prior art, the parking management identification method and related equipment of the present invention have the following technical effects: 1. By setting up a single-parking-space roadside device, the existing detector and ETC communication are effectively integrated as a whole, and an event identification step is set in the process. By using a new remote detection technology with a new acquisition angle, more characteristic signals of vehicles entering and exiting the parking space can be captured and identified, and the "vehicle is about to enter the parking space, the vehicle is about to leave the parking space" identification results that the traditional short-distance geomagnetic vehicle detector does not have are provided, and the identification results are provided to the back-end system and / or other more types of parking space-type roadside equipment, which provides trigger conditions for image capture and evidence collection, parking space occupancy detection and license plate recognition, so that it can more accurately grasp the specific situation of the parking space from different dimensions, and improve the unmanned automatic processing effect; in addition, the single-parking-space roadside equipment and vehicle detector proposed by the present invention are easier to install and maintain in the later stage, and do not need to be installed under the chassis of the vehicle like the traditional short-distance geomagnetic vehicle detector, which saves a lot of operating investment; 2. . The supporting multi-parking roadside equipment has many advantages. First, the distributed processing can be broken down into parts, which makes it easier to wake up and complete data interaction with the ETC electronic tag. The vehicle positioning accuracy is high, the communication is guaranteed, and the ETC card reading success rate is high. Second, there can be more sufficient space and time to immediately initiate financial deduction transactions when the vehicle leaves the parking space, thereby avoiding vehicle evasion or transaction failure. Third, the parking space type roadside equipment combination scheme proposed by the present invention can directly replace the original product without the need to use expensive and complex phased array antennas to achieve satisfactory parking space and license plate accurate positioning effects, which is conducive to increasing product coverage and popularization and reducing user costs to a greater extent; 3. A unique non-image recognition method is adopted, namely wireless license plate recognition and vehicle entry and exit event recognition. The new method is generally applicable to various common one-line and non-line parking configurations. The information obtained can effectively make up for the problems that are difficult to overcome and solve by image recognition itself, complementing each other to achieve a magical effect of one plus one being greater than two, and the comprehensive processing efficiency of parking management is more strongly guaranteed. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic diagram of the structure principle of a smart parking system involved in the present invention;

[0019] Figure 2 It is a schematic diagram of the structural principle of the single-parking-space type roadside equipment and the multi-parking-space type roadside equipment of the present invention;

[0020] Figure 3 It is a schematic diagram of the equipment layout of the one-line berth installation calibration method of the related equipment of the present invention;

[0021] Figure 4 It is a flow chart of a parking management identification method of the present invention;

[0022] Figure 5It is a schematic diagram of the structural principle of a vehicle detector of the present invention;

[0023] Figure 6 This is a schematic diagram of the structure principle of a national standard ETC 5.8GHz transceiver and wake-up device (applied to single-parking-space roadside equipment) of the present invention;

[0024] Figure 7 This is a schematic diagram of the structure principle of a national standard ETC 5.8GHz transceiver and wake-up device (applied to single-parking-space type roadside equipment or multi-parking-space type roadside equipment) of the present invention;

[0025] Figure 8 Schematic diagram of the structure principle of a single-parking-space roadside equipment in an embodiment of the present invention;

[0026] Fig. 9 It is a schematic diagram of the structural principle of a multi-parking type roadside equipment in an embodiment of the present invention. DETAILED DESCRIPTION

[0027] Taking a parking lot time-based charging project, i.e., urban roadside parking charging (straight parking spaces) as an example, a parking management identification method and related equipment of the present invention are introduced in detail:

[0028] like Figure 1 This is a schematic diagram of the structural principle of a smart parking system involved in the present invention. In the figure, the parking space-type roadside equipment 001 adopts phased array antenna technology for the straight-line parking space, and reads the wireless license plate information through directional communication with the OBU. At the same time, image recognition technology is also used to detect parking space occupancy and recognize image license plates. The wireless license plates and image license plates are further optimized to obtain a one-to-one correspondence between the preferred license plates and parking space numbers. Since there is still a big gap between the current image recognition accuracy and unmanned fully automatic charging, this example will adopt a new improvement scheme, use a parking management identification method and related equipment, and construct, install and use the combination of the parking space-type roadside equipment 002 in the figure to further achieve a better overall implementation effect.

[0029] like Figure 2The present invention is a schematic diagram of the structure principle of a parking management identification single-parking space roadside equipment (hereinafter referred to as RSE) and a multi-parking space roadside equipment (hereinafter referred to as RSU), which includes: a microprocessor 10 and an online data communication interface 121 and a transceiver antenna 122 connected thereto, a national standard ETC 5.8GHz transceiver and wake-up device 111 and a transceiver antenna 112; the national standard ETC The 5.8GHz transceiver and wake-up device 111 and its transceiver antenna 112 are communication connection components for the microprocessor 10 to transmit air data, perform real-time authentication, encrypt communications or complete financial transactions with external devices and the national standard ETC on-board unit OBU; when the single-parking-space roadside device and the multi-parking-space roadside device are used in pairs, a multi-parking-space roadside device can manage one or more single-parking-space roadside devices, and the two can achieve communication docking including sending response wake-up lists and / or reporting business data through their respective online data communication interfaces 121; during installation and operation, by pre-calibrating the maximum gain direction of the transceiver antenna, a wireless wake-up mechanism is used to realize communication linkage data interaction of the ETC electronic tag OBU in a fixed parking area, without the need to use a phased array antenna with high cost and technical complexity, and the OBU license plate information and / or MAC address encoding can be obtained, while achieving accurate matching of vehicles and parking spaces.

[0030] The content of this paragraph is an explanation of the construction principle of a vehicle detector proposed by the present invention. Since it is also an important component of the single-parking roadside equipment in terms of functional architecture, it is introduced here and no longer described separately; the single-parking roadside equipment of this embodiment also includes: a detector 16; the detector 16 is installed in the single-parking roadside equipment and is connected to its microprocessor 10 by wire. The microprocessor 10 can detect and analyze the presence, distance and / or moving direction of a specific target in the parking space by using the detector 16, and provide relevant event identification information including "the vehicle is about to enter the parking space, the vehicle is stopped in the parking space, the vehicle is about to leave the parking space, and there is no vehicle in the parking space" to the multi-parking roadside equipment through a wireless connection. The two can communicate and connect through their respective online data communication interfaces 121; further, as Figure 8As shown in the schematic diagram of the structure principle of the single-parking roadside equipment, the detector 16 includes: a radar ranging module 161 and a TMR vehicle detector 162; the radar ranging module 161 is a device that works in the 77GHz frequency band and can detect and measure the distance of target objects as far as 3 meters or more. The target distance calculation can be completed by the microprocessor 10a through the interface, or the target distance calculation can be completed by the built-in MCU and then the result is output to the microprocessor 10a; the TMR vehicle detector adopts a tunnel magnetoresistance (Tunneling Magneto Resistive, referred to as TMR) The sensor technology detects vehicles and has ultra-high magnetic sensitivity detection capability, wide dynamic range, good linearity, and small hysteresis. It can detect metal objects that meet vehicle characteristics at a distance of up to 2 meters or more. Thanks to the use of long-distance detection technology, both vehicle detectors and single-parking roadside equipment can be installed in open areas inside and outside the curb or parking space to replace the traditional short-distance geomagnetic vehicle detector installed under the existing vehicle chassis. It can detect and identify various predefined events before and after the vehicle enters and exits the parking space. The specific working principle is: the microprocessor 10 or 10a uses the radar ranging module 161 to detect objects and their distances as far as 3 meters or more at a time, and the preset conditions are met. When further detecting whether the object is a metal object through the TMR vehicle detector 162, the microprocessor 10 or 10a performs comprehensive analysis and event recognition according to preset characteristic parameters, and uses the online data communication interface to provide relevant event recognition information including "the vehicle is about to enter the parking space, the vehicle is stopped in the parking space, the vehicle is about to leave the parking space, and there is no vehicle in the parking space" to the back-end system and / or other external devices by wired or wireless connection; in view of the large gap in the recognition rate of the parking space occupancy detection effect using pure image recognition technology, it is very necessary to supplement the use of the vehicle detector proposed in the present invention or the single-parking roadside equipment including the vehicle detector function.

[0031] For single-bay roadside equipment, such as Figure 8 As shown, the microprocessor 10a has the characteristics of low power consumption and high computing performance, and an ADC and / or DAC converter is integrated on the chip. Preferably, this example uses the nRF 52832QFAA chip of Nordic Company; the online data communication interface uses a BLE low-power Bluetooth wireless communication module 121 and its transceiver antenna 122 to achieve wireless networking communication with multi-parking roadside equipment; the national standard ETC 5.8GHz transceiver and wake-up device 111 has two reference solutions, see Figure 6 and Figure 7In actual use, if the multi-parking roadside device uses the control mechanism of sending the "list of single-parking roadside devices that respond to wake-up" and adopts solution one, that is, "the multi-parking roadside device transmits a wake-up signal to the fixed parking area, searches for and interacts with the awakened ETC electronic tag OBU for business data; the single-parking roadside device receives the list and is in the list, or is awakened by the wake-up signal and there is no list first, then it immediately listens and collects the uplink information transmitted by the OBU in its corresponding parking space", the national standard ETC 5.8GHz transceiver and wake-up device should use Figure 7 In other cases, it is recommended to use Figure 6 The solution is the solution to be adopted in this embodiment. Preferably, this example adopts Broadcom BK5823 national standard ETC 5.8GHz transceiver, Skyworks SKY13351-378LF RF switch, and Qorvo QPF4530 RF front-end module; the RFOP RF output pin of the BK5823 is wired to the TX of the Q PF4530 through a matching circuit; the INPU pin of SKY13351-378LF is wired to the RFIN pin of BK5823 through a matching circuit, the OUTPUT1 pin of SKY13351-378LF is wired to the TX of QPF4530 through a matching circuit, and the OUTPUT2 pin of SKY13351-378LF is wired to the wake-up receiving antenna 1121 through a matching circuit; the ANT pin of the QPF4530 is wired to the transceiver antenna 1122 through a matching circuit; the BK5823 is wired to the microprocessor 10a in the single-parking roadside device through SPI and a wake-up signal pin.

[0032] For multi-bay roadside equipment, such as Fig. 9 As shown, the microprocessor 10b has the characteristics of low power consumption and high computing performance, and an ADC and / or DAC converter is integrated on the chip. Preferably, this example uses the nRF 52832QFAA chip of Nordic Company; the online data communication interface uses the BLE low-power Bluetooth wireless communication module 131 and its transceiver antenna 132 to realize wireless networking communication with other external devices including single-parking roadside equipment, and uses the NB-IOT communication module 141 and its transceiver antenna 142 to realize data reporting to the back-end system; the national standard ETC 5.8GHz transceiver and wake-up device, such as Figure 7As shown, preferably, a Broadcom BK5823 national standard ETC 5.8GHz transceiver and a Qorvo QPF4578 RF front-end module are used; the RFOP RF output pin and the RFIN RF input pin of the BK5823 are respectively connected to the TX and RX of the QPF4578 by wire through a matching circuit; the ANT pin of the QPF4578 is connected to the transceiver antenna 152 by wire through a matching circuit; the BK5823 is connected to the microprocessor 10b in the multi-parking roadside equipment by wire through an SPI pin.

[0033] like Figure 3 As shown in the figure, a method for calibrating the installation of a straight-line parking space for related equipment is provided, including: 1. A multi-parking space type roadside equipment RSU is used for unified management for installation of every four consecutive parking spaces, and the trisection point on the front side of the curb line segment of the first parking space is calibrated, i.e., diamond A in the figure, and the multi-parking space type roadside equipment is installed at a suitable position on the curb platform near the point, with an installation height of at least 2.7 meters. The center point of the maximum gain direction of the antenna for communication with the OBU (i.e., the black single arrow line segment 3 across all parking spaces in the large elliptical shadow 1 in the figure) is locked at the trisection point on the highway side of the rear line segment of the fourth parking space, i.e., diamond B in the figure, or the middle point of the rear line segment of the third parking space, i.e., diamond C in the figure; 2. . From the second to the fourth parking spaces, a single-parking-space roadside equipment RSE is installed on the curb at the intersection of the headline and the curb line of each parking space. The wake-up receiving antenna of the single-parking-space roadside equipment and the transceiver antenna for communicating with the OBU have been pre-calibrated for spatial selection at the factory (see the small oval 2 in the figure). During on-site installation, ensure that the wake-up receiving antenna is on one side of the multi-parking-space roadside equipment; 3. The single-parking-space roadside equipment RSE1 corresponding to the first parking space is migrated to the fixed pole of the multi-parking-space roadside equipment RSU through functional integration, which can achieve the same use effect while further shortening the wake-up distance of the last parking space in exchange for a higher OBU communication success rate.

[0034] After installing the equipment and completing the relevant parameter settings, Figure 1 , Figure 4 , Figure 8 as well as Fig. 9 The specific working method of the relevant equipment of this embodiment is as follows: A. The microprocessor 10b in the multi-parking roadside equipment RSU is pre-processed according to the new event (such as Figure 3A car has just entered and stopped in the parking space 4, and the 4-parking space RSE4 reports a new event of "parking space entry and parking" to the RSU, or the video image detects a new event of a car entering and occupying the 4-parking space) Set up a list of single-parking space type roadside equipment RSE that responds to wake-up (such as only RSE4 responds to wake-up), and communicate with the BLE low-power Bluetooth wireless communication module 121 and its transceiver antenna 122 inside each single-parking space type roadside equipment RSE managed through its internal BLE low-power Bluetooth wireless communication module 131 and its transceiver antenna 132, and send the list to each RSE one step in advance. Then, the multi-parking space type roadside equipment RSU uses its internal national standard ETC The 5.8GHz transceiver and wake-up device 151 and its transceiver antenna 152 transmit a wake-up signal to the fixed parking area, search for and interact with the awakened ETC electronic tag OBU for business data; the single-parking roadside equipment RSE receives the list through its internal BLE low-power Bluetooth wireless communication module 121 and its transceiver antenna 122 and is in the list, or is awakened by the wake-up signal received by its internal wake-up receiving antenna 1 1 2 1 and there is no list first, then it immediately controls its internal SKY13351-378LF to switch the RF switch from OUTPUT2 to OUTPUT1, and uses its internal transceiver QPF4530 and its transceiver antenna 1122, BK5823 to listen and collect the uplink information transmitted by the OBU in its corresponding parking space; B. If the reporting conditions are met, the microprocessor 10a in the single-parking-space roadside equipment RSE reports the required service data including the OBU license plate information and / or MAC address code to the microprocessor 10b in the multi-parking-space roadside equipment RSU through the respective BLE low-power Bluetooth wireless communication modules and their transceiver antennas on both sides, and the microprocessor 10a controls SKY13351-378LF to switch the RF switch from OUTPUT1 to OUTPUT2 before going into sleep mode to end the current wake-up linkage operation; C. The microprocessor 10a in the single-parking-space roadside equipment RSE wakes up at a fixed time and detects the dynamic signal changes of vehicles entering and exiting the corresponding parking space through the radar ranging module 161 and the TMR vehicle detector 162 to perform event recognition including "vehicle is about to enter the parking space, the vehicle is stopped in the parking space, the vehicle is about to leave the parking space, and there is no vehicle in the parking space". If a new event occurs, the required service data is reported to the multi-parking-space roadside equipment RSU through the respective BLE low-power Bluetooth wireless communication modules and their transceiver antennas on both sides, and then goes into sleep mode.

[0035] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. For those skilled in the art, the present invention may have various modifications and variations. Any modification, equivalent substitution, improvement, etc. made within the spirit and principle of the present invention shall be included in the scope of the claims of the present invention.

Claims

1. A parking management identification method, characterized in that: The steps include: A. A multi-parking roadside device can pre-set a list of single-parking roadside devices to be awakened in response to a new event and send it to the single-parking roadside device in advance. Then, one of the following operation options is available: Solution 1: The multi-parking roadside equipment transmits a wake-up signal to the fixed parking area, searches for and interacts with the awakened ETC electronic tag OBU for business data; When the single-parking-space roadside equipment receives the list and is in the list, or is awakened by the awakening signal and does not have the list first, it immediately listens and collects the uplink information transmitted by the OBU in its corresponding parking space; Solution 2: Multi-parking roadside equipment transmits a wake-up signal to a fixed parking area; The single-parking-space roadside equipment is awakened by the awakening signal, and if it is in the list or there is no list before, it immediately searches for the awakened ETC electronic tag OBU in its corresponding parking space and interacts with the service data; B. If the reporting conditions are met, the single-parking-space type roadside device reports the required service data including the OBU license plate information and / or MAC address code to the backend system and / or the multi-parking-space type roadside device, and goes into sleep to end this wake-up linkage operation; C. The single-parking-space roadside device wakes up periodically and detects the dynamic signal changes of vehicles entering and exiting the corresponding parking space through detectors to identify events including "vehicle about to enter the parking space, vehicle stopped in the parking space, vehicle about to leave the parking space, and no vehicle in the parking space". If a new event occurs, the required business data is reported to the back-end system and / or the multi-parking-space roadside device, and then it goes into sleep mode.

2. A parking management identification method as claimed in claim 1, characterized in that: It also includes the pre-calibration of the installation of the straight-line parking equipment before step A, including: a. Use a multi-parking type roadside equipment for unified management for every four consecutive parking spaces, calibrate the trisection point of the front side of the curb line segment of the first parking space, install the multi-parking type roadside equipment at a suitable position of the curb platform near the point, and install it at a height of at least 2.7 meters. The center point of the maximum gain direction of the antenna communicating with the OBU is locked at the trisection point on the highway side of the rear line segment of the fourth parking space, or the middle point of the rear line segment of the third parking space; b. From the second to the fourth parking spaces, install a single-parking type roadside equipment on the curb at the intersection of the front line and the curb line of each parking space. The wake-up receiving antenna of the single-parking type roadside equipment and the transceiver antenna communicating with the OBU have been pre-calibrated for spatial selection at the factory. The on-site installation ensures that the wake-up receiving antenna is on one side of the multi-parking type roadside equipment; c. The single-parking-space roadside equipment corresponding to the first parking space is migrated to the multi-parking-space roadside equipment or its fixed pole through functional integration to achieve equivalent usage effects.

3. A parking management single-parking space type roadside equipment and a multi-parking space type roadside equipment, characterized in that: At least: Microprocessor and its wired online data communication interface, national standard ETC 5.8GHz transceiver and wake-up device and its transceiver antenna; The national standard ETC 5.8GHz transceiver and wake-up device and its transceiver antenna are the microprocessor and external devices, the national standard ETC on-board unit OBU A communication connection component for air data transmission, real-time authentication, encrypted communication or completing financial transactions; when the single-parking type roadside equipment and the multi-parking type roadside equipment are used in pairs, a multi-parking type roadside equipment can manage one or more single-parking type roadside equipment, and the two realize communication docking including sending response wake-up lists and / or business data reporting through their respective online data communication interfaces; the single-parking type roadside equipment also includes: a detector; the detector is installed inside or outside the single-parking type roadside equipment, and the microprocessor of the single-parking type roadside equipment can detect and analyze the presence, distance and / or moving direction of a specific target in the parking space by using the detector, and provide relevant event identification information including "the vehicle is about to enter the parking space, the parking space is stopped, the vehicle is about to leave the parking space, and the parking space is empty" to the back-end system and / or the multi-parking type roadside equipment through a wired or wireless connection; the wireless connection must meet the prerequisite that the detector and the online data communication interface of the single-parking type roadside equipment can communicate and dock; the detector includes: TMR Vehicle detector, radar ranging module; the radar ranging module is a module that works in the 24GHz, 77GHz or 79GHz frequency band and can detect and measure the distance of target objects as far as 3 meters or more. The target distance calculation can be completed by the microprocessor through the interface, or the target distance calculation can be completed by the built-in MCU and then the result is output to the microprocessor; the TMR vehicle detector uses tunnel magnetoresistance sensor technology to detect vehicles, and can detect metal objects that meet vehicle characteristics at a distance of up to 2 meters or more.

4. The parking management single-parking space type roadside equipment and multi-parking space type roadside equipment as claimed in claim 3, characterized in that: The microprocessor has the characteristics of low power consumption and high computing performance, and has an integrated ADC and / or DAC converter on-chip; the online data communication interface refers to the external connection interface for the microprocessor to communicate with external devices, vehicle detectors, and back-end systems in a network, including: wired and / or wireless data communication interfaces, the wired data communication interface includes UART, RS232 / RS485 / RS422, USB or TCP / IP network interface; the wireless data communication interface includes: NB-IOT communication module, 470-490MHz Lora / LoraWAN / CLAA wireless communication module, 2.45GHz / 433MHz wireless transceiver, 4G / 5G wireless communication module, WiFi / BLE low-power Bluetooth / ANT / ZigBee or a specific protocol wireless communication module and its supporting transceiver antenna, one or more combinations thereof.

5. The parking management single-parking space type roadside equipment and multi-parking space type roadside equipment as claimed in claim 3, characterized in that: There are two optional schemes for the national standard ETC 5.8GHz transceiver and wake-up device. Scheme 1, which is applied to single-parking roadside equipment, includes: Broadcom BK5823 national standard ETC 5.8GHz transceiver, Skyworks SKY13351-378LF RF switch, Qorvo QPF4530 or QPF4578 RF front-end module; the RFOP RF output pin of the BK5823 is wired to the TX of the QPF4530 or QPF4578 through a matching circuit; the INPUT pin of SKY13351-378LF is wired to the RFIN pin of BK5823 through a matching circuit, the OUTPUT1 pin of SKY13351-378LF is wired to the TX of QPF4530 or QPF4578 through a matching circuit, and the OUTPUT2 pin of SKY13351-378LF is wired to the wake-up receiving antenna through a matching circuit; the ANT of the QPF4530 or QPF4578 is wired to the TX of the QPF4530 or QPF4578 The pin is wired to the transceiver antenna through a matching circuit; the BK5823 is wired to the microprocessor in the single-parking roadside device through SPI and a wake-up signal pin; Solution 2 applied to single-parking roadside equipment or multi-parking roadside equipment, including: Broadcom BK5823 national standard ETC 5.8GHz transceiver, QorvoQPF4578 or QPF4530 RF front-end module; the RFOP RF output pin and RFIN RF input pin of the BK5823 are respectively wired to the TX and RX of the QPF4578 or QPF4530 through a matching circuit; the ANT pin of the QPF4578 or QPF4530 is wired to the transceiver antenna through a matching circuit; the BK5823 is wired to the microprocessor in the single-parking roadside device or the multi-parking roadside device through an SPI pin.

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