CN105989738A - Low-duty-ratio wireless parking space detection sensor system and data collection and transmission method thereof - Google Patents
Low-duty-ratio wireless parking space detection sensor system and data collection and transmission method thereof Download PDFInfo
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- CN105989738A CN105989738A CN201510061679.XA CN201510061679A CN105989738A CN 105989738 A CN105989738 A CN 105989738A CN 201510061679 A CN201510061679 A CN 201510061679A CN 105989738 A CN105989738 A CN 105989738A
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Abstract
The invention aims to solve the problems in the prior art that parking is difficult in a city and an existing parking space detection management system have defects, and provides a wireless sensor information collection and transmission new technology based on a low-duty-ratio work mode. By utilizing the new technology, a new parking space automatic detection management system which is simple in structure, low in cost and convenient to install and maintain is provided. The new parking space automatic detection management system solves the problems of automatic charging monitoring of urban open-air and indoor parking areas, a computer management platform connected with mobile phones of parking space owners is utilized to fully integrate various kinds of parking resources including private parking spaces in the city on the premise that the benefits of the owners are transparently monitored and ensured. By adopting the system, the difficult parking problem in the city is greatly relieved, practical benefits are brought to the parking space owners, and real mutual benefit and win-win results are realized.
Description
Technical field
The present invention relates to the automatic detection on parking stall, the collection of power consumption wireless sensor information and transmission.
Background technology
With expanding economy, parking difficulty has become current city, particularly metropolitan a great problem.Meanwhile, the empty parking space that there is again many non-dedicated parking lots in city can not be used, and for example, owner goes to work the parking stall vacated, or the parking stall etc. that the institutional settings inoperative period is vacated；Other existing city uses the public parking lot of manual toll collection, there is the problem that buckets of cash runs off all in various degree, and this loss ratio is sometimes far beyond 50%, and this includes that country brings loss greatly to parking stall owner.
How more parking stall is provided, it is the important exercise question that municipality performs actual deeds for the people, on the premise of fully ensuring that unit or private savings parking stall owner oneself uses, the time not using parking stall is leased out for other people, it should be a highly effective solution；Meanwhile reducing manual toll collection leak is each parking stall owner very concern；(how many vehicles are had to make my parking stall used if on the one hand parking stall owner can be clear from my specifically used situation in parking stall, use time length every time), also it is known that economic benefit produced by oneself parking stall, the share should got with oneself, on the other hand, need the third party stopped can have a clear understanding of again the time that parking stall can disable at any time, then the two problem is just readily available and solves.Obviously, this relates to technical problem.Existing current technical scheme is to use the methods such as ultrasonic wave, or infrared acquisition.This scheme includes three parts: 1) detector itself；2) supply line；3) weak electric signal transmission system；Secondly, ultrasonic wave or Infrared Detectors itself are all launched by signal and signal receives two two parts and forms, and the two part must be separately mounted to above and below parking stall simultaneously, but also needs power supply.Current programme is that the obstruct to signal for the vehicle by entering parking stall judges whether parking stall has car to park.Thus, current programme is not used to the vehicle detection on general urban ground parking position.Current programme is in addition to the problem of construction cost high (each parking stall is more than 500 yuan), and owing to further relating to the laying of forceful electric power and weakness circuit, line upkeep and network management etc., thus integrated cost is then higher.
In sum, existing ultrasonic wave or infrared parking stall vehicle detection administrative skill, being not used to the parking stall detection management of the general Surface parking lots in city, it is high that it there is also construction cost when for the detection management of underground parking parking stall, the big great drawback of maintenance management workload.Thus market in urgent need is a kind of simple effective, low cost, can solve ground and underground parking parking stall detects the system of management automatically simultaneously.
Content of the invention
The present invention is aiming at the defect of existing parking stall detection management system, provides a kind of brand-new, installs very convenient, and system is very simple, has both been not required to supply line, and the wireless parking stall being also not required to data transmission link detects management system automatically.This system not only construction cost low (include be arranged in, each parking stall cost is less than 100 yuan) and there is no circuit and network operation administration fee.The present invention is except very simple detector installment work, and outside the establishment of software platform, does not has other extra works.The present invention can utilize existing charging administration system completely, by interests of coordinating all quarters concerned, it is achieved win-win realizes.
In addition, owner and user can directly utilize mobile phone, by network management platform, directly provide parking stall to hire out temporal information, and inquire about the real time information of the parking stall that can disable.Thus in the case of not affecting owner's work and oneself use, greatly played the service efficiency that existing idle car is, and by ensure that the interests of owner to the monitoring automatically of each parking stall service condition.
Meanwhile, data collected by platform for the management, also will become the big data of a kind of great tap value.
Present system includes that one uses, for parking stall detection and transmission of wireless signals, the intelligent wireless parking stall detecting terminal that low duty mode works, and is called for short intelligent car position terminal later；One read write line that can carry out radio communication with intelligent car position terminal, a back-stage management computer system being connected with read write line by wired or wireless mode.Each intelligent car position terminal has oneself unique ID to number, and represents the particular location of its parking stall installed.
This intelligent car position terminal includes a three-dimensional chip geomagnetic sensor or other parking stalls detection sensor (will be illustrated as a example by geomagnetic sensor below), with a single-chip transceiver being connected with this sensor, one for controlling this geomagnetic sensor and the single-chip microcomputer of single-chip transceiver；These parts of intelligent car position terminal also can be fully integrated among one or two chip.
This intelligent car position terminal is driven by battery, has the function that low-voltage is reported to the police.Intelligent car position terminal is used as city's electric drive certainly.Intelligent car position terminal both can be fixedly mounted on the ground on parking stall, it is possible to is arranged on directly over parking stall, in the range of leaving roof certain distance.Intelligent car position terminal has two functions, and one is the GEOMAGNETIC CHANGE by detecting, and determines whether this parking stall has car to park；When it needs to be determined that stopped concrete identity when, in addition it is also necessary to read the id information of vehicle carried electronic label；Another function is to carry out radio communication with read write line, by the information of parking stall storing cycle change, and the id information that includes if desired being stopped, send read write line in the lump to.In order to the convenient position finding empty parking space of the driver finding parking stall, system also can install an idle indicator lamp in parking stall connecting active electronic label above parking stall, and for eye-catching and power saving purpose, this indicator lamp uses the working method of low duty ratio flicker.This active electronic label, is in the flashy duty of monitoring signal after periodic sleep is revived usually.When intelligent car position end-probing has been moved off to the vehicle being originally parked in this parking stall, and success is before and after read write line sends the information that parking stall has entered into idle condition from occupied state, also would be required to the transceiver in intelligent car position terminal at one section more than in the time period connecting the idle indicator lamp tag sleep wake-up period in parking stall, sign and issue to this indicating light sign uninterruptedly and send instruction, catch label periodically monitoring signal in a flash, establish a communications link therewith, open flashing indicator light, to tell this parking stall of driver finding parking stall idle；And take this parking stall at intelligent car position end-probing to there being new vehicle to sail into, and success is before and after read write line sends the information that parking stall has entered into occupied state from idle condition, in the same way, sign and issue, to this indicating light sign, order of losing one's life, close the idle indicator lamp in this parking stall.
If the active electronic label that idle parking stall indicator lamp connects and idle indicator lamp, all use external power supply and when non-battery is powered, this active electronic label will be in the state of receipt signal usually all the time, when the change that parking stall seizure condition occurs, intelligent car position terminal sends the mode of the command signal being turned on and off indicator lamp to this active electronic label, to be no longer continuously within a period of time, the mode of uninterrupted repeat its transmission same command signal bag, but launch single command signal, and receive the mode of acknowledgement information.And after succeeding in sending up, intelligent car position terminal will enter the resting state of low-power consumption, waits next round to be activated.
In order to reduce power consumption, geomagnetic sensor in intelligent car position terminal, single-chip microcomputer and transceiver utilize the intelligent car position terminal internal clocking of self, use intermittence working method.The intermittence working method that intelligent car position terminal uses includes: utilizes internal clocking timing to connect microcontroller power supply and opens geomagnetic sensor and single-chip microcomputer body of work part, read the information data of geomagnetic sensor, and after having read data, close geomagnetic sensor, to reduce power consumption.This open single-chip microcomputer and sensor by internal clocking intermittence and gather sensing data, with the method reducing system power dissipation, apply also for the slow application scenarios of other many sensor amounts changes, such as temperature, humidity, pressure, smog, the scene such as building ess-strain.Here, single-chip microcomputer is according to the analysis to the geomagnetic data information reading, intelligent car position terminal installation site (ground or vehicle up direction), and this intelligent car position terminal mount point earth magnetism initial value when not stopping, judge according to mode set in advance, determining that whether this parking stall is occupied, or parking stall takies whether situation changes.If a determination be made that the situation that parking stall takies there occurs change, then single-chip microcomputer will start the transceiver in intelligent car position terminal, the situation changing this is wirelessly, it is sent to read write line, and management computer is passed in a wired or wireless manner by read write line, be successfully completed with the communication of read write line after, single-chip microcomputer and transceiver all will enter low-power consumption resting state, wait be activated next time.If a determination be made that be not changed in, it no matter is to continue with occupied still keeping idle condition, then entrance resting state is all waited and being waken up up by internal clocking next time by single-chip microcomputer, transmit information without starting transceiver to read write line, except when needed, timing is outer to system transmission heartbeat packet information.
When system also needs to carry out identification to the vehicle taking parking stall, associated vehicle also will be installed a vehicle active electronic tag.Intelligent car position terminal only detect this parking stall change to occupied state from idle condition when, the radio receiving transmitting module that just can start in intelligent car position terminal carries out short-range communication with vahicles label, read vahicles label ID, to determine being which takies this parking stall, and entrance resting state after reading.Here vahicles label must be can to carry out the wireless transceiver chip of radio communication with intelligent car position terminal to make, and the position installed should with the installation site of intelligent car position terminal as close possible to.For example, when intelligent car position terminal is installed on the ground, then vahicles label is preferably mounted on the position near bottom for the vehicle.Here the communication mode of intelligent car position terminal and vahicles label, refer to the transceiver in intelligent car position terminal continuously within one section of time period more than vahicles label sleep wake-up period, etc. the ID signal launched from vahicles label to be received, vahicles label is then in limited transmitting power after periodic sleep is revived, to the mode of intelligent car position terminal transmission self ID.Here the limited emission power of so-called vahicles label, refer to vahicles label on the premise of guaranteeing to communicate with this intelligent car position terminal, transmitting power little as far as possible closely (2-3 rice) is used to launch ID, to avoid as far as possible being read by the intelligent car position terminal of other parking stalls neighbouring.If there is misreading situation, this mistake can be eliminated by back-stage management software.
In order to the convenient position finding empty parking space of the driver finding parking stall, the position that system also can it is readily seen that above parking stall, it is mounted with an idle parking stall indicator lamp being connected with active electronic label, this active electronic label, is in the flashy duty of monitoring signal after periodic sleep is revived usually；When intelligent car position end-probing has been moved off to the vehicle being originally parked in this parking stall, and success is after read write line sends the information that parking stall has entered into idle condition from occupied state, also would be required to intelligent car position terminal within one time more than the idle indicator lamp tag sleep wake-up period in parking stall, sign and issue to this indicating light sign uninterruptedly and send instruction, open flashing indicator light, to tell the driver finding parking stall, this parking stall is idle；And take this parking stall at intelligent car position end-probing to there being new vehicle to sail into, and success is after read write line sends the information that parking stall has entered into occupied state from idle condition, in the same way, sign and issue, to this indicating light sign, order of losing one's life, close the idle indicator lamp in this parking stall.
The time slot of intelligent car position terminal gap sex work, can accurately judge that parking stall takies situation and is as the criterion, is typically considered as vehicle and sails or use the time needed for this parking stall into.If it is determined that result be that parking stall is occupied, and continuously occupied within a period of time, then to will be considered to this parking stall occupied for intelligent car position terminal.If detecting parking stall within a period of time is in idle condition continuously, then intelligent car position terminal thinks that this parking stall is in unoccupied state.No matter parking stall is in continuous seizure condition or continuous idle condition, intelligent car position terminal uploads parking stall seizure condition information all without starting transceiver by read write line, and only when parking stall seizure condition changes, intelligent car position terminal, just new parking stall seizure condition information can be reported management computer by read write line.
So system is just clear from stopping every time and takies the time of this parking stall, and automatically calculates the Parking Fee that this parking stall owner should collect.If the vehicle taking parking stall is provided with vahicles label, then system is it can also be seen that take the id information of this parking stall vehicle, and car owner can pass through mobile phone and parking lot computer management database in other words, finds the position that oneself vehicle is stopped.
Intelligent car position terminal uses remote-wireless communication mode to communicate with read write line, and read write line can be connected with back-stage management computer by wired or wireless mode: the wireless networks such as this includes by WiFi, GPRS are connected with back-stage management computer.The wireless communication distance of independent read write line and intelligent car position terminal is up to 1500 meters in clearing, and its communication distance also can be adjusted as required.Thus, use the read write line of limited quantity just can manage a considerable amount of parking stall.Under outdoor situations, a general parking lot only needs a read write line to be sufficient to.And owing to read write line volume is little easy for installation, and power consumption is very low, average power consumption is less than one watt, thus installs and obtain all very convenient with power supply, it be also possible to use solar powered.Under indoor situations, every layer of parking lot typically has only to a read write line, the underground parking that situation is complicated or scope is very big, can suitably increase the quantity of read write line.
Based on easy to install, and reducing ground as far as possible in the face of the impact of intelligent car position terminal and read write line communication distance, intelligent car position terminal can use variously-shaped and mounting means.But when it is arranged on the ground of parking stall, should as far as possible transceiver antenna be basseted higher.The intelligent car position terminal using road surface railway spike shape will be can yet be regarded as, and one is preferable to be selected.The intelligent car position terminal of railway spike shape not only transceiver antenna is on ground, and the installation glue that railway spike is the same only need to be used just can to fix on the ground easily.
When the read write line in each independent parking lot, when being connected with background network management computer server by wired or wireless mobile network, system just can set up a public parking space information service platform.The parking stall provider having registered on platform, including day or night be available for the parking space information in the non-dedicated parking lot in private savings parking stall and business unit externally rented.The parking space information that mobile phone or computer can be for rent to management platform offer can be reached by, including position and operational time period information.And renting party also can directly pass through mobile phones enquiring or predetermined its drives the parking stall near target location.
So not only take full advantage of existing various utilizable parking stalls resource in city, significantly alleviate the difficult problem of city parking, reduce Parking Fee, bring out and out economic benefit also to parking stall owning side simultaneously.In addition, owing to the specifically used situation back-stage management platform on each parking stall is perfectly clear, thus the rights and interests of all sides in parking stall will be completely secured, and the income of the city curb parking of country ownership will no longer run off in a large number.And existing parking lot management includes that toll administration is not required to make any change, need to do is only that coordination includes owner, existing parking lot administrative department, and platform management benefits of different parties.
Utilize vehicle carried electronic label in place with good conditionsi, and intelligent car position terminal also can realize other functions such as car owner's parking spot shows automatically, automatic charging.
Meanwhile, data collected by platform for the management, also will become the big data of a kind of great tap value.
Brief description:
Fig. 1 is existing parking place detecting system.
Fig. 2 is intelligent car position detection system of the present invention.
Fig. 3 is low duty ratio wireless parking stall detection sensor systems.
Fig. 4 is spike-type intelligent wireless parking stall detecting terminal basic size shape.
Detailed description of the invention:
Near each parking stall central authorities on ground, use the installation method that railway spike is the same, one intelligent wireless parking stall terminal of installation diagram；On each car near above or below car plate, an active electronic label consistent with this number-plate number is installed；Installing a read write line on the electric pole of parking lot center position, read write line is connected with back-stage management server by GPRS module, and read write line uses outer power supply source or sun-generated electric power to power.After intelligent car position terminal installs, read the initial value of idle parking stall geomagnetic sensor by read write line or handhold read-write device, and be written in the single-chip microcomputer of intelligent car position terminal. intelligent car position terminal starts the time cycle reading sensing data, will be according to intelligent car position saving power for terminal requirement can be met, can guarantee that again intelligent car position terminal can correctly judge the factor considerations such as the change of parking condition on parking stall, and parking position changed condition information updating time requirement.
Intelligent car position terminal, according to predetermined sleep wake-up period, is periodically waken up and is read geomagnetic sensor data message, and compares with initial value when idle for the parking stall, determines whether that vehicle takies this parking stall.The result judging every time all by last or on the result that judges several times compare, if it find that parking stall takies situation there occurs change, and be to enter into seizure condition from idle condition, intelligent car position terminal will start transceiver, the signal initially entering continuously several seconds receives state, having received the id information that vahicles label is sent, then together with parking stall occupied information, and parking stall ID numbering (intelligent car position Termination ID numbering) launches parking stall to read write line and is taken by the good vehicle of this ID.If it find that the change that parking stall takies situation is to enter idle condition from seizure condition, then intelligent car position terminal sends the idle information in this parking stall by starting transceiver to read write line.
All these information, will be passed to back-stage management server by read write line and the network being attached thereto, and are met the needs of various application management by related management software.
Claims (9)
1. low duty ratio wireless parking stall detection sensor systems, it is characterized in that, system includes several intelligent car position terminals, a read write line that can carry out radio communication with these intelligent car position terminals, a back-stage management computer system being connected by wired or wireless mode with read write line；Each intelligent car position terminal includes parking stall detection sensor, a transceiver and a single-chip microcomputer；Each intelligent car position terminal is a complete independent working cell, is arranged on the ground on parking stall or the top on parking stall；Intelligent car position terminal uses battery to power, and by the clock control of therein, uses the periodic sleep flashy low duty ratio mode that works after reviving to work；The single-chip microcomputer of intelligent car position terminal inner embedded in the control supervisor of sensor and transceiver in advance, for controlling the work of sensor and transceiver, and the sensing data reading is analyzed, single-chip microcomputer is according to the difference with sensing data when the taking during free time of contrast parking stall, make parking stall according to method set in advance and take the judgement whether situation changes, and control the work of transceiver according to the result analyzing judgement；Here the low duty ratio mode of operation of intelligent car position terminal includes: internal clock cycles connects the power supply of single-chip microcomputer and sensor, read the data of sensor, and obtaining closure sensor after sensing data, single-chip microcomputer in intelligent car position terminal is by the sensor contrast reference data according to the program embedding in advance and storage simultaneously, it is analyzed to the data being gathered judging, decide whether that starting transceiver communicates with read write line according to judged result, or perform other actions setting according to judged result；If it is judged that need to start transceiver, being then successfully completed with after other actions communicating or setting of read write line at transceiver, single-chip microcomputer and transceiver all will enter the resting state of low-power consumption, wait next round to be activated；If it is judged that do not need to start transceiver, then single-chip microcomputer will immediately enter Low-power-consumptiodormancy dormancy state, wait next round to be activated.
2. according to claim 1, it is characterized in that, the specific practice that single-chip microcomputer in described intelligent car position terminal " controls the work of transceiver " according to the result analyzing judgement, refer to only when single-chip microcomputer is according to the com-parison and analysis of sensing data, make after this parking stall takies the judgement that situation has occurred and that change, just can start transceiver and set up the communication with read write line, or perform other predetermined action；Do not change if a determination be made that this parking stall takies situation, then single-chip microcomputer will not start transceiver, and immediately enter Low-power-consumptiodormancy dormancy state.
3. according to claim 1, it is characterized in that, reliability in order to ensure system work, here the low duty ratio mode of operation of intelligent car position terminal also includes: the power supply of the connection transceiver of internal clock cycles, start transceiver and send heartbeat packet information to read write line, or monitoring reception is from the possible command information of read write line.
4. according to claim 1, it is characterized in that, sensor in described intelligent car position terminal is a single-chip geomagnetic sensor, the single-chip microcomputer in intelligent car position terminal by compare parking stall idle when and the change of geomagnetic sensor data when having car to park, judge that whether parking stall occupied.
5. according to claim 1, it is characterised in that when needing to be identified the identity stopped, each car needs to install a vehicle carried electronic label that can carry out radio communication with intelligent car position terminal；At intelligent car position end-probing to this parking stall from original idle condition, after entering into again occupied state, transceiver in intelligent car position terminal is before sending, to read write line, the information that parking stall seizure condition changes, also need within one time more than vahicles label sleep wake-up period, enter the state of continuous receipt signal, receive the id information from vahicles label periodic transmission, and this parking stall has just been loaded with the vehicle occupied information of this ID vahicles label, issue read write line in the lump, and after receiving read write line and be properly received the receipt of this information, enter Low-power-consumptiodormancy dormancy state, wait and being started by internal clocking next round.
6. according to claim 1, it is characterized in that, in order to the convenient position finding empty parking space of the driver finding parking stall, said system is also above parking stall, it is mounted with an idle indicator lamp in parking stall connecting active electronic label, this active electronic label, is in the flashy duty of monitoring signal after periodic sleep is revived usually；When intelligent car position end-probing has been moved off to the vehicle being originally parked in this parking stall, and success is before and after read write line sends the information that parking stall has entered into idle condition from occupied state, also would be required to the transceiver in intelligent car position terminal at one section more than in the time period connecting the idle indicator lamp tag sleep wake-up period in parking stall, sign and issue to this indicating light sign uninterruptedly and send instruction, open flashing indicator light, to tell this parking stall of driver finding parking stall idle；And take this parking stall at intelligent car position end-probing to there being new vehicle to sail into, and success is before and after read write line sends the information that parking stall has entered into occupied state from idle condition, in the same way, sign and issue, to this indicating light sign, order of losing one's life, close the idle indicator lamp in this parking stall.
7. according to claim 6, it is characterized in that, active electronic label that described and idle parking stall indicator lamp is connected and idle indicator lamp, all use external power supply and non-battery is powered, thus this active electronic label will be in the state of receipt signal usually all the time, the situation of change that intelligent car position terminal will occur according to parking stall seizure condition, sends the command signal being turned on and off indicator lamp to this active electronic label；And intelligent car position terminal is to the mode of this active electronic label firing order signal, will be the single command signal of transmitting, and receive the mode of acknowledgement information, and after succeeding in sending up, intelligent car position terminal will enter the resting state of low-power consumption, wait next round to be activated.
8. according to claim 1, it is characterized in that, in order to easy to install, and reduce ground as far as possible in the face of the impact of radio communication between intelligent car position terminal and read write line, described intelligent car position terminal is arranged in a same plastic box body of similar railway spike, and the installation method using railway spike the same fixes on the ground.
9. the data acquisition and transmission method of low duty ratio wireless parking stall detection sensor, it is characterised in that the method includes: A.
Transceiver in setting sensor digital independent and intelligent car position terminal is needed to launch the time cycle of heartbeat packet previously according to application；B. the internal clocking in intelligent car position terminal is utilized to read the time cycle according to the sensing data setting, start single-chip microcomputer and the sensor being attached thereto, read sensing data, and make sensor enter Low-power-consumptiodormancy dormancy state after obtaining sensing data, wait next round start by set date；C. single-chip microcomputer is utilized to be analyzed the sensing data being gathered according to method set in advance and standard and judge, and determine according to judged result: it is to allow single-chip microcomputer immediately enter Low-power-consumptiodormancy dormancy state, wait next round start by set date, still single-chip microcomputer is utilized to start other predetermined action, including but not limited to start transceiver and send warning message or other relevant informations to read write line, and after being successfully completed preplanned mission, allow single-chip microcomputer and transceiver all enter Low-power-consumptiodormancy dormancy state, wait next round start by set date；D. the time cycle according to transmitting heartbeat packet set in advance, utilize internal clocking interrupt signal, start single-chip microcomputer and transceiver and send the normal signal of intelligent car position terminal works to read write line, and after having sent heartbeat packet signal, enter Low-power-consumptiodormancy dormancy state and wait next round to start.
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| CN108460985A (en) * | 2017-02-21 | 2018-08-28 | 成都西谷曙光数字技术有限公司 | A kind of wireless indoor parking space management system and method |
| CN106934951A (en) * | 2017-03-15 | 2017-07-07 | 深圳市翼动科技有限公司 | A kind of curb parking fee collecting system |
| CN110246361A (en) * | 2018-11-26 | 2019-09-17 | 深圳市城市交通规划设计研究中心有限公司 | Parking management method, device and terminal based on intelligent railway spike |
| CN109637190A (en) * | 2019-01-31 | 2019-04-16 | 苏州卷积智能信息技术有限公司 | Buried two sensory perceptual system of vehicle |
| CN109841065A (en) * | 2019-01-31 | 2019-06-04 | 苏州卷积智能信息技术有限公司 | City curb parking identifying system and method based on intelligent recognition |
| CN113066308A (en) * | 2021-06-02 | 2021-07-02 | 四川九通智路科技有限公司 | Parking space detection and light induction parking system and method |
| CN113593255A (en) * | 2021-08-03 | 2021-11-02 | 青岛海信智慧生活科技股份有限公司 | Parking space management method, equipment and system |
| CN113593255B (en) * | 2021-08-03 | 2022-12-23 | 青岛海信智慧生活科技股份有限公司 | Parking space management method, equipment and system |
| CN116206475A (en) * | 2023-04-24 | 2023-06-02 | 成都西谷曙光数字技术有限公司 | LDSW road safety driving system and working method thereof |
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