CN104574594A - Access control system and method of mixing station - Google Patents
Access control system and method of mixing station Download PDFInfo
- Publication number
- CN104574594A CN104574594A CN201410830967.2A CN201410830967A CN104574594A CN 104574594 A CN104574594 A CN 104574594A CN 201410830967 A CN201410830967 A CN 201410830967A CN 104574594 A CN104574594 A CN 104574594A
- Authority
- CN
- China
- Prior art keywords
- mobile terminal
- haulage vehicle
- station
- mixing plant
- platform
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Landscapes
- Mobile Radio Communication Systems (AREA)
Abstract
The invention provides an access control system and method of a mixing station. The access control system comprises a WIFI device and mobile terminals. The method comprises the following steps: receiving the intensity of signals from each mobile terminal based on the detection of the WIFI device; determining that transportation vehicles carrying the current mobile terminal get in when the intensity of the signal, received by the WIFI device, from the current mobile terminal turns from weak to strong; recording get-in time of the transportation vehicles carrying the current mobile terminal; ranking departure queues of each transportation vehicle according to the get-in time of each transportation vehicle. The cost of the WIFI device is relatively lower than that of an RFID technology, and the signal identification range is wide, so that the WIFI device can meet the requirement on the identification range for the mixing station, and is suitable for being used in severe environments such as the mixing station. The access control system of the mixing station is low in cost and can be suitable for the severe environments such as the mixing station.
Description
Technical field
The present invention relates to mixing plant technical field, particularly relate to gate control system and the control method thereof of mixing plant.
Background technology
Mixing plant is mainly used in concrete works, and main application is for being uniformly mixed concrete.Mixing plant needs multiple haulage vehicle to provide transportation service to it in the course of the work, such as, need the raw materials such as vehicle transport sandstone, cement, needs Product transport that concrete-agitating vehicle is produced to construction site.If polytype, multiple stage vehicle are passed in and out at mixing plant do not carry out good gate inhibition's management and control to it, its normal production safety will inevitably be affected.
What adopt time most in mixing plant is that artificial cognition is come to visit vehicle or outbound vehicles, and these vehicles while passing mixing plants are ranked, labor management is vehicles while passing mixing plant inefficiency on the one hand, and labor management easily occurs that human intervention affects fairness on the other hand.
Electronic label technology based on RFID technique or the gate inhibition's identifying schemes based on Bluetooth technology are adopted to this technician, but RFID technique is with high costs, although Bluetooth technology relative inexpensiveness, but its induction range is too little, generally only have about 15 meters, the oversize vehicle that generally cannot meet mixing plant arbitrarily changes the situation in track out of the station, and under relatively rugged environment during (dust of such as mixing plant is larger) application, inductive effects is poor.
Summary of the invention
Based on this, being necessary for there is no at present a kind of with low cost and the problem of mixing plant rugged surroundings gate control system can be adapted to, providing a kind of with low cost and gate control system and the control method thereof of the mixing plant of mixing plant rugged surroundings can be applicable to.
A kind of mixing plant gate control system, comprises at least 2 WIFI devices and multiple mobile terminal, and described WIFI device and described mobile terminal are by wireless connections, and each described mobile terminal is respectively arranged with unique identification mark;
Described WIFI device is arranged at import and export and the mixing plant high building place of mixing plant respectively, and each described mobile terminal is arranged on every platform haulage vehicle;
Described WIFI device detects the signal intensity that mobile terminal sends over, judge whether the haulage vehicle carrying mobile terminal is entering the station, when haulage vehicle enters the station, record haulage vehicle enters the station the time, enter the station the time according to every platform haulage vehicle, station order is gone out to every platform haulage vehicle and sorts;
Wherein, the described signal intensity sended over according to mobile terminal judges whether the haulage vehicle carrying mobile terminal is entering the station to be specially: when WIFI equipment receive current mobile terminal signal intensity all change from weak to strong time, judge that the haulage vehicle carrying current mobile terminal enters the station.
A control method for mixing plant gate control system, comprises step:
WIFI device is set respectively in the import and export of mixing plant and mixing plant high building place, every platform haulage vehicle arranges mobile terminal respectively;
Set up the wireless connections of described WIFI device and described mobile terminal, and identify for each mobile terminal distributes unique identification;
Detected the intensity receiving signal from every platform mobile terminal by WIFI device, when the WIFI device signal intensity received from current mobile terminal all changes from weak to strong, judge that the haulage vehicle carrying current mobile terminal enters the station;
Record carries current mobile terminal haulage vehicle and enters the station the time;
Enter the station the time according to every platform haulage vehicle, every platform haulage vehicle departures queue is sorted
The gate control system of mixing plant of the present invention and control method thereof, gate control system comprises WIFI device and mobile terminal, WIFI device is arranged at mixing plant respectively and imports and exports and mixing plant high building place, mobile terminal is individually fixed on every platform haulage vehicle, the intensity of the signal received from every platform mobile terminal is detected by WIFI device, when the WIFI device signal intensity received from current mobile terminal all changes from weak to strong, judge that the haulage vehicle carrying current mobile terminal enters the station, record carries current mobile terminal haulage vehicle and enters the station the time, enter the station the time according to every platform haulage vehicle, every platform haulage vehicle departures queue is sorted, WIFI fixture cost is cheap compared to RFID technique, and its Signal analysis scope is wide, the requirement of mixing plant to identification range can be met, be applicable in this severe environment for use of mixing plant, so the gate control system of mixing plant of the present invention is a kind of with low cost and can be applicable to the gate control system of the mixing plant of mixing plant rugged surroundings.
Accompanying drawing explanation
Fig. 1 is first example structure schematic diagram of the gate control system of mixing plant of the present invention;
Fig. 2 is the schematic flow sheet of first embodiment of the control method of mixing plant gate control system of the present invention;
Fig. 3 is the schematic flow sheet of second embodiment of the control method of mixing plant gate control system of the present invention.
Embodiment
In order to make object of the present invention, technical scheme and advantage clearly understand, below with reference to the accompanying drawings and embodiment, the present invention is further elaborated.Should be appreciated that concrete enforcement described herein is only in order to explain the present invention, does not limit the present invention.
As shown in Figure 1, a kind of mixing plant gate control system, comprise at least 2 WIFI devices 100 and multiple mobile terminal 200, described WIFI device 100 and described mobile terminal 200 are by wireless connections, and each described mobile terminal 200 is respectively arranged with unique identification mark;
Described WIFI device 100 is arranged at import and export and the mixing plant high building place of mixing plant respectively, and each described mobile terminal 200 is arranged on every platform haulage vehicle;
Described WIFI device 100 detects the signal intensity that mobile terminal 200 sends over, judge whether the haulage vehicle carrying mobile terminal 200 is entering the station, when haulage vehicle enters the station, record haulage vehicle enters the station the time, enter the station the time according to every platform haulage vehicle, station order is gone out to every platform haulage vehicle and sorts;
Wherein, the described signal intensity sended over according to mobile terminal 200 judges whether the haulage vehicle carrying mobile terminal 200 is entering the station to be specially: when WIFI equipment receive current mobile terminal 200 signal intensity all change from weak to strong time, judge that the haulage vehicle carrying current mobile terminal 200 enters the station.
Mobile terminal 200 is similar to has smart mobile phone now, and it has WIFI communication function, can set up radio communication be connected with WIFI device 100.Non-essential, we can measure in the operation of reality mixing plant import and export and high building everywhere WIFI device 100 receive mobile terminal 200 strongest signal strength, namely mixing plant is imported and exported and the peak value of high building WIFI device 100 signal intensity everywhere, we can confirm whether vehicle successfully enters the station further to utilize this peak value, utilize high building everywhere WIFI device 100 peak value we can confirm whether vehicle has entered high building and started to load mixed earth.
The gate control system of mixing plant of the present invention comprises WIFI device 100 and mobile terminal 200, WIFI device 100 is arranged at mixing plant respectively and imports and exports and mixing plant high building place, mobile terminal 200 is individually fixed on every platform haulage vehicle, the intensity of the signal received from every platform mobile terminal 200 is detected by WIFI device 100, when WIFI device 100 signal intensity received from current mobile terminal 200 all changes from weak to strong, judge that the haulage vehicle carrying current mobile terminal 200 enters the station, record carries current mobile terminal 200 haulage vehicle and enters the station the time, enter the station the time according to every platform haulage vehicle, every platform haulage vehicle departures queue is sorted, WIFI device 100 device cost is cheap compared to RFID technique, and its Signal analysis scope is wide, the requirement of mixing plant to identification range can be met, be applicable in this severe environment for use of mixing plant, so the gate control system of mixing plant of the present invention is a kind of with low cost and can be applicable to the gate control system of the mixing plant of mixing plant rugged surroundings.
Wherein in an embodiment, the quantity of described WIFI device 100 is 2.
The quantity of WIFI device 100 is 2 and can is guaranteeing under the prerequisite that range of signal satisfies the demands, reduce production cost to greatest extent, preferably powerful WIFI device 100 is enough extensive to guarantee that range of signal covers for WIFI device 100 in addition, can not cannot realize access control because of external interference such as dust.
Wherein in an embodiment, described identification is designated MAC Address.
MAC Address is the identification marking being commonly used to differentiation equipment in the communications field, and different mobile terminals 200 is assigned unique MAC Address, so that WIFI device 100 is accurately judged when which the mobile terminal 200 of pre-treatment is.
As shown in Figure 2, a kind of control method of mixing plant gate control system, comprises step:
S100: WIFI device is set respectively in the import and export of mixing plant and mixing plant high building place, every platform haulage vehicle arranges mobile terminal respectively.
WIFI device can be provided with multiple, preferably, can arrange 2 powerful WIFI devices based on cost consideration, and two WIFI devices are separately positioned on mixing plant and import and export and mixing plant high building place.Mobile terminal wireless connecting function, mobile terminal is separately fixed on haulage vehicle.
S200: the wireless connections of setting up described WIFI device and described mobile terminal, and identify for each mobile terminal distributes unique identification.
Each mobile terminal distributes unique identification mark, and identification identifies such as MAC Address.Mobile terminal has unique identification mark respectively, be convenient to follow-up middle exact knowledge be which mobile terminal with WIFI device interaction data.In addition, we can also by the number-plate number of haulage vehicle and mobile terminal identification identification record mounted thereto, store, like this we just can directly know current is which car need enter the station or set off.
S300: detected the intensity receiving signal from every platform mobile terminal by WIFI device, when the WIFI device signal intensity received from current mobile terminal all changes from weak to strong, judges that the haulage vehicle carrying current mobile terminal enters the station.
In certain area coverage, enter when arriving at a station interior outside vehicle slave station, the distance of its distance mixing plant and high building is by as far as near, its signal intensity also time grow from weak to strong, when the WIFI device signal intensity received from current mobile terminal all changes from weak to strong, judge that the haulage vehicle carrying current mobile terminal enters the station.In addition, in order to avoid the interference of the factors such as extraneous landform, non-essential, we can also detect mixing plant import and export and high building everywhere WIFI device receive mobile terminal strongest signal strength, namely mixing plant is imported and exported and the peak value of high building WIFI device signal intensity everywhere, we can confirm whether vehicle successfully enters the station further to utilize this peak value, utilize high building everywhere WIFI device peak value we can confirm whether vehicle has entered high building and started to load mixed earth.
S400: record carries current mobile terminal haulage vehicle and enters the station the time.
The current mobile terminal haulage vehicle time of entering the station is recorded, if having the number-plate number of record haulage vehicle and mobile terminal identification mounted thereto to identify before, can also according to directly knowing license plate number is when how many vehicles enters the station.
S500: enter the station the time according to every platform haulage vehicle, sorts to every platform haulage vehicle departures queue.
Owing to knowing the time of vehicle pull-in, we sorted to every platform haulage vehicle time of entering the station, based on fair, accurately, the principle such as first in first out, every platform haulage vehicle departures queue is sorted.
The control method of the gate control system of mixing plant of the present invention, the intensity of the signal received from every platform mobile terminal is detected by WIFI device, when the WIFI device signal intensity received from current mobile terminal all changes from weak to strong, judge that the haulage vehicle carrying current mobile terminal enters the station, record carries current mobile terminal haulage vehicle and enters the station the time, enter the station the time according to every platform haulage vehicle, every platform haulage vehicle departures queue is sorted, WIFI fixture cost is cheap compared to RFID technique, and its Signal analysis scope is wide, the requirement of mixing plant to identification range can be met, be applicable in this severe environment for use of mixing plant.
As shown in Figure 3, wherein in an embodiment, after described step S500 also in steps
S600: every platform haulage vehicle is gone out station order and is sent to mobile terminal.
Just every platform haulage vehicle goes out station order and is sent to mobile terminal, and mobile terminal by these information displays to driver, such as, will be shown to user by display screen.In practical operation, can also show currently also have how many chassis before oneself, information display of estimating also to need how long could to set off etc. is to driver.
Wherein in an embodiment, describedly every platform haulage vehicle is gone out station order and is sent to mobile terminal and specifically comprises step:
Inquire about the identity identification information of each mobile terminal;
Every platform haulage vehicle is gone out the mobile terminal that station order is sent to corresponding identity identification information.
Only every platform haulage vehicle is gone out the mobile terminal that station order is sent to corresponding identity identification information, reduce desired data traffic volume on the one hand, improve data transmission speed, be conducive to maintaining secrecy of information on the other hand, avoid information to be sent in incoherent mobile terminal.
Wherein in an embodiment, described wireless connections of setting up described WIFI device and described mobile terminal, and for each mobile terminal distribute unique identification mark after also in steps:
Obtain the number-plate number of every platform haulage vehicle, set up and store the number-plate number mapping table of every platform mobile terminal identification mark and haulage vehicle.
Obtain the number-plate number mapping table of every platform mobile terminal identification mark and haulage vehicle, just directly can be known the number-plate number of current transportation vehicle by mobile terminal identification mark, convenient operation personnel intuitively understand present case.
Wherein in an embodiment, the every platform haulage vehicle of described basis enters the station the time, after every platform haulage vehicle departures queue is sorted also in steps:
Detected the intensity receiving signal from every platform mobile terminal by WIFI device, when WIFI device receives signal intensity from current mobile terminal by when dying down by force, judge that the haulage vehicle carrying current mobile terminal sets off.
In certain area coverage, when going out to arrive at a station outer in vehicle slave station, the distance of its distance mixing plant and high building is from the near to the remote, its signal intensity also time by by force to weak, when WIFI device receives signal intensity from current mobile terminal by when dying down by force, judge that the haulage vehicle carrying current mobile terminal enters the station.
Wherein in an embodiment, described identification is designated MAC Address.
Wherein in an embodiment, described record carries current mobile terminal haulage vehicle and to enter the station after the time also in steps:
In scanning mixing plant, material receiving port quantity and each material receiving port wait in line the quantity of haulage vehicle, and are numbered each material receiving port;
Wait in line the quantity of haulage vehicle according to each material receiving port, arrange to carry current mobile terminal haulage vehicle by the material receiving port of splicing, and obtain the numbering of this material receiving port;
Push the numbering of this material receiving port to current mobile terminal.
Further, the haulage vehicle carrying current mobile terminal travels to close corresponding material receiving port place.
Multiple material receiving port may be there is in mixing plant, haulage vehicle is entering in mixing plant, when needing to load concrete, need to drive to material receiving port, load concrete, because material receiving port loading concrete intensity is limited, the phenomenon of queuing may be there is, in order to reduce the time that haulage vehicle is waited in line, we need to scan knows that in whole mixing plant, in material receiving port, quantity and each material receiving port wait in line the quantity of haulage vehicle, Current vehicle is arranged to load concrete to the material receiving port of relative queuing negligible amounts, after arranging properly, the numbering of this material receiving port is sent to current mobile terminal, inform that haulage vehicle driver travels to this material receiving port.Such as, assuming that there are A and B two material receiving ports in mixing plant, current A material receiving port has been parked 2 haulage vehicles and has been waited for loading, and B material receiving port has been parked 3 haulage vehicles and waited for loading, and current transportation vehicle so will be arranged to freight to A material receiving port.Haulage vehicle can be avoided like this to be parked at the beginning from the position away from object material receiving port, and to travel back and forth in narrow mixing plant, avoid losing time, also avoid vehicle congestion in mixing plant.
The above embodiment only have expressed several embodiment of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection domain of patent of the present invention should be as the criterion with claims.
Claims (10)
1. a mixing plant gate control system, is characterized in that, comprises at least 2 WIFI devices and multiple mobile terminal, and described WIFI device and described mobile terminal are by wireless connections, and each described mobile terminal is respectively arranged with unique identification mark;
Described WIFI device is arranged at import and export and the mixing plant high building place of mixing plant respectively, and each described mobile terminal is arranged on every platform haulage vehicle;
Described WIFI device detects the signal intensity that mobile terminal sends over, judge whether the haulage vehicle carrying mobile terminal is entering the station, when haulage vehicle enters the station, record haulage vehicle enters the station the time, enter the station the time according to every platform haulage vehicle, station order is gone out to every platform haulage vehicle and sorts;
Wherein, the described signal intensity sended over according to mobile terminal judges whether the haulage vehicle carrying mobile terminal is entering the station to be specially: when WIFI equipment receive current mobile terminal signal intensity all change from weak to strong time, judge that the haulage vehicle carrying current mobile terminal enters the station.
2. mixing plant gate control system according to claim 1, is characterized in that, the quantity of described WIFI device is 2.
3. mixing plant gate control system according to claim 1 and 2, is characterized in that, described identification is designated MAC Address.
4. a control method for mixing plant gate control system, is characterized in that, comprises step:
WIFI device is set respectively in the import and export of mixing plant and mixing plant high building place, every platform haulage vehicle arranges mobile terminal respectively;
Set up the wireless connections of described WIFI device and described mobile terminal, and identify for each mobile terminal distributes unique identification;
Detected the intensity receiving signal from every platform mobile terminal by WIFI device, when the WIFI device signal intensity received from current mobile terminal all changes from weak to strong, judge that the haulage vehicle carrying current mobile terminal enters the station;
Record carries current mobile terminal haulage vehicle and enters the station the time;
Enter the station the time according to every platform haulage vehicle, every platform haulage vehicle departures queue is sorted.
5. the control method of mixing plant gate control system according to claim 4, is characterized in that, the every platform haulage vehicle of described basis enters the station the time, after every platform haulage vehicle departures queue is sorted also in steps:
Every platform haulage vehicle is gone out station order and is sent to mobile terminal.
6. the control method of mixing plant gate control system according to claim 5, is characterized in that, describedly every platform haulage vehicle is gone out station order and is sent to mobile terminal and specifically comprises step:
Inquire about the identity identification information of each mobile terminal;
Every platform haulage vehicle is gone out the mobile terminal that station order is sent to corresponding identity identification information.
7. the control method of the mixing plant gate control system according to claim 4 or 5, is characterized in that, described wireless connections of setting up described WIFI device and described mobile terminal, and for each mobile terminal distribute unique identification mark after also in steps:
Obtain the number-plate number of every platform haulage vehicle, set up and store the number-plate number mapping table of every platform mobile terminal identification mark and haulage vehicle.
8. the control method of mixing plant gate control system according to claim 4, is characterized in that, the every platform haulage vehicle of described basis enters the station the time, after every platform haulage vehicle departures queue is sorted also in steps:
Detected the intensity receiving signal from every platform mobile terminal by WIFI device, when WIFI device receives signal intensity from current mobile terminal by when dying down by force, judge that the haulage vehicle carrying current mobile terminal sets off.
9. the control method of the mixing plant gate control system according to claim 4 or 5, is characterized in that, described identification is designated MAC Address.
10. the control method of the mixing plant gate control system according to claim 4 or 5, is characterized in that, described record carries current mobile terminal haulage vehicle and to enter the station after the time also in steps:
In scanning mixing plant, material receiving port quantity and each material receiving port wait in line the quantity of haulage vehicle, and are numbered each material receiving port;
Wait in line the quantity of haulage vehicle according to each material receiving port, arrange the material receiving port carrying current mobile terminal haulage vehicle, and obtain the numbering of this material receiving port;
Push the numbering of this material receiving port to current mobile terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410830967.2A CN104574594B (en) | 2014-12-26 | 2014-12-26 | Access control system and method of mixing station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410830967.2A CN104574594B (en) | 2014-12-26 | 2014-12-26 | Access control system and method of mixing station |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104574594A true CN104574594A (en) | 2015-04-29 |
| CN104574594B CN104574594B (en) | 2017-05-10 |
Family
ID=53090553
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410830967.2A Expired - Fee Related CN104574594B (en) | 2014-12-26 | 2014-12-26 | Access control system and method of mixing station |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104574594B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20030099281A1 (en) * | 2001-11-27 | 2003-05-29 | L-3 Communications Corporation | Method and device for frame sync detection using channel combining and correlation |
| US20060197654A1 (en) * | 2001-09-20 | 2006-09-07 | Denso Corporation | Mobile station having waiting process with main power off |
| CN101988835A (en) * | 2009-07-30 | 2011-03-23 | 黄金富 | Navigation directing system adopting electronic compass for pedestrians and corresponding method |
| CN102083152A (en) * | 2011-03-07 | 2011-06-01 | 宇龙计算机通信科技(深圳)有限公司 | Method for switching hotspots in wireless local area network (WLAN) and terminal |
| CN103259848A (en) * | 2013-04-17 | 2013-08-21 | 浙江大学 | Cross-terminal transfer method for vehicle-mounted environment |
| CN103473840A (en) * | 2013-09-23 | 2013-12-25 | 沈阳天目科技有限公司 | Passenger flow counting system and method having personnel distinguishing function based on wireless network |
-
2014
- 2014-12-26 CN CN201410830967.2A patent/CN104574594B/en not_active Expired - Fee Related
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20060197654A1 (en) * | 2001-09-20 | 2006-09-07 | Denso Corporation | Mobile station having waiting process with main power off |
| US20030099281A1 (en) * | 2001-11-27 | 2003-05-29 | L-3 Communications Corporation | Method and device for frame sync detection using channel combining and correlation |
| CN101988835A (en) * | 2009-07-30 | 2011-03-23 | 黄金富 | Navigation directing system adopting electronic compass for pedestrians and corresponding method |
| CN102083152A (en) * | 2011-03-07 | 2011-06-01 | 宇龙计算机通信科技(深圳)有限公司 | Method for switching hotspots in wireless local area network (WLAN) and terminal |
| CN103259848A (en) * | 2013-04-17 | 2013-08-21 | 浙江大学 | Cross-terminal transfer method for vehicle-mounted environment |
| CN103473840A (en) * | 2013-09-23 | 2013-12-25 | 沈阳天目科技有限公司 | Passenger flow counting system and method having personnel distinguishing function based on wireless network |
Also Published As
| Publication number | Publication date |
|---|---|
| CN104574594B (en) | 2017-05-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102081807B (en) | Parking management system for parking lot and parking guiding method | |
| CN103324901B (en) | A kind of positioner for warehousing system and localization method | |
| CN106559443A (en) | The system of selection of car networking V2X service transmission path and device | |
| KR101586706B1 (en) | Method for managing car parking using car stopper with geomagnetic wireless sensor | |
| CN105047003B (en) | A kind of reverse car seeking and the positive method and system for finding parking stall | |
| CN105282703B (en) | Contact the method and system of vehicle and interior mobile terminal | |
| CN106128148A (en) | A kind of intelligent car position management system | |
| CN102568048A (en) | Roadside equipment, method and system for carrying out service processing on multi-lane free flow | |
| CN107808546A (en) | Indoor parking localization method, system and computer-readable recording medium | |
| Oransirikul et al. | Feasibility of analyzing Wi-Fi activity to estimate transit passenger population | |
| CN202870609U (en) | Vehicle-mounted information processing system based on Internet of things technology | |
| CN104392627A (en) | Intelligent traffic monitoring system | |
| CN202587395U (en) | GSM-R vehicle-mounted wireless interference testing system | |
| CN110335460A (en) | A kind of public traffic information intelligent interactive system and method | |
| CN204348084U (en) | A kind of intelligent traffic monitoring system | |
| CN101658054A (en) | Telecommunication system | |
| CN203588474U (en) | Intelligent bus system | |
| CN104574594A (en) | Access control system and method of mixing station | |
| CN104464354A (en) | Electronic bus-stop board | |
| CN104348964A (en) | Information processing method, mobile terminal and information processing system | |
| CN103247173A (en) | Bus arrival time prompt system | |
| KR101740788B1 (en) | Method for deciding location of suttle using mobile terminal | |
| CN204166567U (en) | A kind of locating device for warehousing system | |
| CN1289218A (en) | Analog cellular multiple-base station positioning method and system | |
| CN105957384A (en) | Vehicle network electronic bus stop board display apparatus |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170510 Termination date: 20171226 |