CN203523047U - Seamless-switching wireless network base station - Google Patents
Seamless-switching wireless network base station Download PDFInfo
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- CN203523047U CN203523047U CN201320288903.5U CN201320288903U CN203523047U CN 203523047 U CN203523047 U CN 203523047U CN 201320288903 U CN201320288903 U CN 201320288903U CN 203523047 U CN203523047 U CN 203523047U
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- base station
- wireless network
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Abstract
The utility model relates to a seamless-switching wireless network base station, which comprises a central processing unit and a high power supply used for supplying power to the central processing unit. The central processing unit is connected with a wireless receiving-transmitting antenna via a feed line. The central processing unit is also connected with a satellite positioning module. The satellite positioning module is composed of a satellite antenna, a radio-frequency front-end circuit and an analog-to-digital conversion circuit, wherein the satellite antenna, the radio-frequency front-end circuit and the analog-to-digital conversion circuit are sequentially and electrically connected. The analog-to-digital conversion circuit is connected with the central processing unit. The satellite positioning module is in the form of a GPS positioning module. The satellite antenna is in the form of a GPS mushroom-head antenna. According to the technical scheme of the utility model, due to the adoption of the high power supply, the transmitting power and the distance are increased, and the accuracy and the reliability of the positioning communication are improved. Meanwhile, the stability of equipment is enhanced. In addition, the seamless-switching wireless network base station is strong in anti-interference capability, good in crypticity property, simple in networking operation and convenient in network connection. Therefore, the seamless-switching wireless network base station can be applied to the training on the subject II examination and the subject III examination of automobile drivers for realizing the return of information including video files, audio files, examinee screenshots and the like.
Description
Technical field
The utility model relates to a kind of vehicle-mounted client wireless access device of vehicle driver examination monitoring in communication system that can be used for.
Background technology
In vehicle driver examination, communication between examination vehicle and Control Room main frame will realize through wireless aps conventionally, within existing wireless aps can only cover radius 500m scope, less sometimes, and not very stable, along with test site needs to utilize wireless aps in other words, realize the expansion of the distance that vehicle and Control Room main frame communicate, wireless aps in the past can not meet the demands gradually.
Utility model content
For meeting new needs, the utility model provides a kind of seamless switching wireless network base station, has improved the communication distance of equipment, has strengthened the stability of equipment, is mainly used in the passback of the information such as video in examination of driver training system, audio frequency, examinee's sectional drawing.
The technical solution of the utility model is:
A seamless switching wireless network base station, comprises CPU and is the large power supply of described CPU power supply, described CPU connects wireless receiving and dispatching antenna by feeder line.
Described CPU is also connected with satellite positioning module, and described satellite positioning module can comprise satellite antenna, radio-frequency (RF) front-end circuit and the analog to digital conversion circuit being electrically connected to successively, and analog-digital conversion circuit as described is connected with described CPU.
Described CPU can also be connected with serial port circuit.
Described CPU can also be connected with network interface circuit.
Between described CPU and large power supply, be also preferably provided with POE power supply adaptor.
Described satellite positioning module can be GPS locating module.
Described satellite antenna is preferably GPS mushroom head antenna.
The beneficial effects of the utility model are:
Owing to having adopted large power supply, make signal transmission power stronger, not only increased radiation length, reduced WAP (wireless access point) quantity, improved the high and reliability of the precision of orientation and communication, also strengthened the stability of each access point apparatus.
Due to integrated former wireless aps function and former Vehicular satellite positioning function, greatly alleviated the vehicle-mounted burden of former examination vehicle.
Accompanying drawing explanation
Fig. 1 is the structural representation of an embodiment of the present utility model.
Embodiment
As shown in Figure 1, the utility model provides a kind of seamless switching wireless network base station, comprises CPU and is the large power supply of described CPU power supply, and described CPU connects wireless receiving and dispatching antenna 2 by feeder line.Described seamless switching wireless network base station can with the vehicle-mounted client real-time communication of the some of test site, by described wireless receiving and dispatching antenna, the in-vehicle communication system of each examination vehicle is linked in total examination monitoring communication system of test site.In described CPU, be provided with wireless transmission passage and wireless receiving passage, be respectively equipped with digital to analog converter and analog to digital converter with the feeder line junction of described wireless receiving and dispatching antenna.
Described CPU is also connected with satellite positioning module, and described satellite positioning module can comprise satellite antenna, radio-frequency (RF) front-end circuit and the analog to digital conversion circuit being electrically connected to successively, and analog-digital conversion circuit as described is connected with described CPU.The control information of bundle of lines examination hall, the wireless receiving and dispatching sky Control Room on described seamless switching wireless network base station sends, and can receive in real time the information that vehicle-mounted client is beamed back, and is connected, and passes to Control Room by wireless netting twine with switch.
Described CPU can also be connected with serial port circuit, and its interface structure is as shown in 3 in Fig. 1.Described CPU can also be connected with network interface circuit, and as adopted RJ45 series 10/100M network interface, to connect switch etc., thereby accessing Internet forms internal communication network with Control Room main frame.
This base station adopts the communication of RS232 agreement, can transmit and launch from the control information of Control Room main frame and the locating information of GPS by wireless receiving and dispatching antenna, and in real time receipt area is got on the bus and is carried the exam information that client is beamed back, and by netting twine, is connected with switch, passes to Control Room main frame.
Between described CPU and large power supply, be also preferably provided with POE power supply adaptor.The circumscripted power line of described large power supply is as shown in 4 in Fig. 1.
Described satellite positioning module can be one or more in GPS, GLONASS, Compass and Galileo locating module, and what the present embodiment adopted is GPS locating module.
Described satellite antenna is preferably GPS mushroom head antenna 1.
The utility model can be used in the test and training of subject two and subject three, and when for subject two, described seamless switching wireless network base station adopts IEEE802.11n wireless protocols, and transmission rate can reach 150mbps, utilizes point-to-multipoint technology and revenue sharing rule.Under a seamless switching wireless network base station, can hold 10-15 examination car, uploaded videos resolution reaches as high as 1280*720, revenue sharing rule can guarantee that each car has enough exam informations such as bandwidth passback video image, thereby meets subject two place demands.
When for subject three, employing be point-to-multipoint and radio roaming mechanism.The problems such as adopt radio roaming mechanism to complete the switching of vehicle between AP between described seamless switching wireless network base station and client, radio roaming mechanism can shorten switching time, reduces the blank screen while recording a video, and time delay is large, loss of data.The transmission rate of each seamless switching wireless network base station, in 150mbps left and right, can be held 15-20 examination car and move simultaneously in overall network.
The utility model specifically has following remarkable advantage:
(1) antijamming capability is strong:
Utilize spread-spectrum mode, the spread spectrum of Data Base band signal is gone out to moving after several times to tens times to radio-frequency transmissions again.Although this practice has been sacrificed band bandwidth, improved antijamming capability and the fail safe of communication system.Because the power in unit frequency band reduces, the interference of other electronic equipment has also been reduced.
(2) good concealment:
In wireless network principles, disguise is a very important principle.Because signal is expanded on very wide frequency band, power on unit bandwidth is very little, be that signal power density is very low, signal is submerged among white noise, others is difficult to the existence of discovery signals, does not know spread spectrum coding in addition, is difficult to pick up useful signal, and extremely low power spectral density also seldom forms and disturbs for other telecommunication equipments.
In addition, the utility model also has deployment advantage: can have access to spider lines by edge switch; Can be in the application of small-scale wlan network, networking is simple, and cost is low; Can be used as edge access equipment, similar cable network access-layer switch, management is simple; 2 or multiple spot, in inconvenience wiring situation, can adopt bridge joint mode to interconnect; Be professional wireless bridge, can support 300Mbps Turbo pattern, transmission range 300m-10Km, transmission rate guarantees 2M-300Mbps.
For needing to set up the situation of wireless coverage node under spacious environment, traditional approach is to be connected into outdoor contact cabinet by laying optical cable mode, then by electrooptical device, photosignal is converted.But because outdoor environment application is complicated, often because electrooptical device fault causes wireless network paralysis.The optical fiber providing by the utility model directly accesses, and has greatly improved system reliability, has reduced to a great extent the trouble of regular maintenance.
Be inconvenient to lay under the applied environment of optical fiber, can carrying out wireless network by bridge joint mode and set up, by the bridging functionality of two seamless switching wireless network base stations, realizing two lan network interconnection.Speed is up to 300M, and bridge joint distance can be up to 10 kilometers.
The utility model volume is little, lightweight, good seal performance, has adopted professional design, and waterproof, protection against the tide, anti-lightning strike, anti-low temperature, have multiple antenna optional, and Access Network is convenient.
Claims (6)
1. a seamless switching wireless network base station, it is characterized in that comprising CPU and be the large power supply of described CPU power supply, described CPU connects wireless receiving and dispatching antenna by feeder line, is also provided with POE power supply adaptor between described CPU and large power supply.
2. seamless switching wireless network base station as claimed in claim 1, it is characterized in that described CPU is also connected with satellite positioning module, described satellite positioning module comprises satellite antenna, radio-frequency (RF) front-end circuit and the analog to digital conversion circuit being electrically connected to successively, and analog-digital conversion circuit as described is connected with described CPU.
3. seamless switching wireless network base station as claimed in claim 2, is characterized in that described CPU is also connected with serial port circuit.
4. seamless switching wireless network base station as claimed in claim 3, is characterized in that described CPU is also connected with network interface circuit.
5. seamless switching wireless network base station as claimed in claim 4, is characterized in that described satellite positioning module is GPS locating module.
6. seamless switching wireless network base station as claimed in claim 5, is characterized in that described satellite antenna is GPS mushroom head antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320288903.5U CN203523047U (en) | 2013-05-24 | 2013-05-24 | Seamless-switching wireless network base station |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320288903.5U CN203523047U (en) | 2013-05-24 | 2013-05-24 | Seamless-switching wireless network base station |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203523047U true CN203523047U (en) | 2014-04-02 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320288903.5U Expired - Lifetime CN203523047U (en) | 2013-05-24 | 2013-05-24 | Seamless-switching wireless network base station |
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| Country | Link |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103957388A (en) * | 2014-05-09 | 2014-07-30 | 上海威锐电子科技有限公司 | Driving test third subject WLAN transmission device |
-
2013
- 2013-05-24 CN CN201320288903.5U patent/CN203523047U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103957388A (en) * | 2014-05-09 | 2014-07-30 | 上海威锐电子科技有限公司 | Driving test third subject WLAN transmission device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20200904 Address after: Room 101, 2 / F, building 17, No. 17, huanke Middle Road, Tongzhou District, Beijing Patentee after: Beijing Elite Road Technology Co.,Ltd. Address before: 100097, Haidian District Jin Yuan times business center B District Office 905 room, Beijing Patentee before: BEIJING JAYA TECHNOLOGY Co.,Ltd. |
|
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20140402 |