CN105406895A - WiFi-based wireless smart vehicle-mounted terminal - Google Patents
WiFi-based wireless smart vehicle-mounted terminal Download PDFInfo
- Publication number
- CN105406895A CN105406895A CN201510900592.7A CN201510900592A CN105406895A CN 105406895 A CN105406895 A CN 105406895A CN 201510900592 A CN201510900592 A CN 201510900592A CN 105406895 A CN105406895 A CN 105406895A
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- Prior art keywords
- wifi
- mounted terminal
- vehicle mounted
- intelligent vehicle
- wireless intelligent
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B1/00—Details of transmission systems, not covered by a single one of groups H04B3/00 - H04B13/00; Details of transmission systems not characterised by the medium used for transmission
- H04B1/38—Transceivers, i.e. devices in which transmitter and receiver form a structural unit and in which at least one part is used for functions of transmitting and receiving
- H04B1/40—Circuits
- H04B1/401—Circuits for selecting or indicating operating mode
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W84/00—Network topologies
- H04W84/02—Hierarchically pre-organised networks, e.g. paging networks, cellular networks, WLAN [Wireless Local Area Network] or WLL [Wireless Local Loop]
- H04W84/10—Small scale networks; Flat hierarchical networks
- H04W84/12—WLAN [Wireless Local Area Networks]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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- Engineering & Computer Science (AREA)
- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
Abstract
The invention discloses a WiFi-based wireless smart vehicle-mounted terminal. The WiFi-based wireless smart vehicle-mounted terminal mainly comprises a WiFi antenna, a WiFi module, a CPU processor, a core board and display equipment. The WiFi-based wireless smart vehicle-mounted terminal is simple in circuit, and practical and effective. The WiFi module is arranged on the vehicle-mounted smart module, so that the Internet speed is increased. Gateway information of a WiFi network is stored, so that automatic connection is realized by manual operations of a user, and the user experience is improved. The rapid connecting and switching performance of WiFi equipment during high-speed movement of a vehicle is optimized, and the WiFi network is more stable. The WiFi-based wireless smart vehicle-mounted terminal is suitable for being popularized and applied in the field of vehicle-mounted products.
Description
Technical field
The present invention relates to a kind of car-mounted terminal, be specifically related to a kind of wireless intelligent vehicle mounted terminal based on WiFi.
Background technology
WiFi router and the terminal such as smart mobile phone, portable computer application widely, and based on the WiFi wireless network also non-extensive use of mobile unit, user can not be upgraded in time the information of mobile unit, cause navigation inaccurate as navigation map can not upgrade in time, bring great inconvenience to user.At present, user uses the 3G/4G flow of user mobile network mostly when car-mounted terminal realizes function of surfing the Net, and the speed not only expending network traffics but also accessing Internet is also slow.
Some mobile unit is by the WiFi function of wireless router expansion mobile unit, but the WiFi access operation of wireless router comprises searches SSID, input access configuration etc., these operating procedures are complicated, setup time is long, therefore, the WiFi access operation of wireless router is comparatively complicated for domestic consumer, often need to have taken a long time, have impact on Consumer's Experience.
Often there is the phenomenons such as visit data broken string, packet loss, transfer of data instability in the car-mounted terminal in prior art with WiFi function, thus affect the operation of many practical functions of need networking in mobile unit in automobile traveling process.
Summary of the invention
Based on the defect of prior art, the invention provides a kind of wireless intelligent vehicle mounted terminal based on WiFi, at least comprise WiFi antenna, WiFi module, CPU processor, core board and display device.Described WiFi module at least comprises: π shape filter circuit, radio transmitting and receiving chip, power module, USB unit; Described WiFi module also comprises, power amplifier, low pass filter, band pass filter, low noise amplifier.
Described π shape filter circuit, power module, USB unit are connected with described radio transmitting and receiving chip respectively, described power amplifier, low pass filter, band pass filter, low noise amplifier are also connected with described radio transmitting and receiving chip, described π shape filter circuit connects WiFi antenna, described USB unit is connected with described CPU processor, described CPU processor is connected with described core board, and described display device is arranged based on described core board.Described CPU processor stores the information such as the user name password of user's WiFi network, makes the connection of WiFi more convenient, improves Consumer's Experience.
In addition, the described wireless intelligent vehicle mounted terminal based on WiFi also comprises a velocity transducer and microprocessing unit MCU, described velocity transducer is set up communication with microprocessing unit MCU and is connected, after described microprocessing unit MCU receives the information of velocity transducer transmission, identify whether automobile is kept in motion, when automobile is kept in motion, described microprocessing unit MCU sends instruction to described CPU, and CPU enters the WiFi pattern under high speed travel condition.WiFi pattern under described high speed travel condition is, increases the speed of WiFi, reduces the interval time of WiFi scanning.
The speed of described WiFi is the interval time that 300 ~ 600Mpbs, WiFi scan is 0.2 ~ 0.8s.
Preferably, the speed of described WiFi is the interval time of 350 ~ 500Mpbs, WiFi scanning is 0.3 ~ 0.6s.
Further preferably, the speed of described WiFi is the interval time of 420Mpbs, WiFi scanning is 0.5s.
An optimal technical scheme of the present invention is, being constructed as follows of described power module, the output of power supply connects a magnetic bead, the electrochemical capacitor being connected with 220 μ F is set, three ceramic disc capacitors in parallel again, its specification is followed successively by 22 μ F, 0.1 μ F, 1000 μ F, and object promotes power source performance, the AC wave of filtering different frequency.
Described magnetic bead specification is FB600/0.5A.
Alternatively, the described wireless intelligent vehicle mounted terminal based on WiFi also comprises a static memory, for storing city Wi-Fi hotspot information, described static memory is connected with described radio transmitting and receiving chip, after the described wireless intelligent vehicle mounted terminal based on WiFi is opened, without the city Wi-Fi hotspot that is certainly dynamically connected during available WiFi wireless network in scope.
Further, WiFi pattern under described high speed travel condition is, the city Wi-Fi hotspot that the automatic decipherment distance of described microprocessing unit MCU is nearest, and in time from described static memory recalls information, so that described radio transmitting and receiving chip sets up new connection, in the gap of old connection and new connection, described CPU carries out buffer memory to protect stored continuity to information, and the time that the described wireless intelligent vehicle mounted terminal based on WiFi and city Wi-Fi hotspot connect is within 1s.
The invention provides a kind of workflow of the wireless intelligent vehicle mounted terminal based on WiFi, be specially: the wireless signal that described WiFi days bundle of lines receives is sent to the radio transmitting and receiving chip of WiFi module, described radio transmitting and receiving chip processes rear output USB unit to signal, and sends information to CPU processor.Described CPU processor is sent to core board after the signal received is carried out integration process, achieves the wireless networking capabilities of intelligent vehicle mounted terminal.The present invention uses the radio transmitting and receiving chip of WiFi module by USB unit and the communication of CPU processor, and circuit is simple, practicability and effectiveness.
The wireless intelligent vehicle mounted terminal based on WiFi that the present invention relates to, vehicle intelligent terminal is provided with WiFi module and WiFi antenna, do not expend the 3G/4G flow of the mobile network of user, but also improve networking speed, make car owner user's amusement function when using intelligent vehicle mounted terminal more powerful.
The CPU processor of the wireless intelligent vehicle mounted terminal based on WiFi that the present invention relates to stores the information such as the user name password of user's WiFi network, makes the connection of WiFi more convenient; Described static memory, stores city Wi-Fi hotspot information, and can be dynamically connected without the need to manual operation city Wi-Fi hotspot certainly, improves Consumer's Experience.
The wireless intelligent vehicle mounted terminal based on WiFi that the present invention relates to, optimize quick connection and the performance of handoffs of vehicle-mounted WiFi equipment in high speed travel condition, reduce broken string number of times and the packet loss of transfer of data, make WiFi network more stable, be more applicable for vehicle environment.
Accompanying drawing explanation
Fig. 1 is signal flow graph of the present invention,
Fig. 2 is the circuit diagram of the embodiment of the present invention 1.
Wherein, the meaning that represents of number in the figure is as follows:
1, WiFi antenna, 2, π shape filter circuit, 3, radio transmitting and receiving chip, 4, power module, 5, CPU processor, 6, USB unit.
Embodiment
Below by specific embodiment, further technical scheme of the present invention is specifically described.Should be appreciated that, the following examples just as illustrating, and do not limit the scope of the invention, and the apparent change made according to the present invention of those skilled in the art simultaneously and modification are also contained within the scope of the invention.
Embodiment 1
A kind of wireless intelligent vehicle mounted terminal based on WiFi as depicted in figs. 1 and 2, comprises WiFi antenna 1, WiFi module, CPU processor 5, core board and display device.Described WiFi module comprises: π shape filter circuit 2, radio transmitting and receiving chip 3, power module 4, USB unit 6.
Described π shape filter circuit 2, power module 4, USB unit 6 are connected with described radio transmitting and receiving chip respectively, described π shape filter circuit 2 connects WiFi antenna 1, described USB unit 6 is connected with described CPU processor 5, described CPU processor 5 is connected with described core board, and described display device is arranged based on described core board.Described CPU processor 5 stores the information such as the user name password of user's WiFi network, makes the connection of WiFi more convenient, improves Consumer's Experience.
In addition, the described wireless intelligent vehicle mounted terminal based on WiFi also comprises a velocity transducer and microprocessing unit MCU, described velocity transducer is set up communication with microprocessing unit MCU and is connected, after described microprocessing unit MCU receives the information of velocity transducer transmission, identify whether automobile is kept in motion, when automobile is kept in motion, described microprocessing unit MCU sends instruction to described CPU, and CPU enters the WiFi pattern under high speed travel condition.WiFi pattern under described high speed travel condition is, increases the speed of WiFi, reduces the interval time of WiFi scanning.
The speed of described WiFi is the interval time that 300 ~ 600Mpbs, WiFi scan is 0.2 ~ 0.8s.
Fig. 1 is the workflow of the wireless intelligent vehicle mounted terminal based on WiFi, be specially: described WiFi antenna 1 is sent to the radio transmitting and receiving chip 3 of WiFi module the wireless signal received, radio transmitting and receiving chip 3 pairs of signals process rear output USB unit 6, and send information to CPU processor 5.Described CPU processor 5 is sent to core board after the signal received is carried out integration process, achieves the wireless networking capabilities of intelligent vehicle mounted terminal.The present invention uses the radio transmitting and receiving chip 3 of WiFi module by USB unit 6 and CPU processor 5 communication, and circuit is simple, practicability and effectiveness.
Embodiment 2
Based on a wireless intelligent vehicle mounted terminal of WiFi, comprise WiFi antenna, WiFi module, CPU processor, core board and display device.Described WiFi module comprises: π shape filter circuit, radio transmitting and receiving chip, power module, USB unit, power amplifier, low pass filter, band pass filter, low noise amplifier.
Described π shape filter circuit, power module, USB unit, power amplifier, low pass filter, band pass filter, low noise amplifier are connected with described radio transmitting and receiving chip respectively, described π shape filter circuit connects WiFi antenna, described USB unit is connected with described CPU processor, described CPU processor is connected with described core board, and described display device is arranged based on described core board.In addition, the described wireless intelligent vehicle mounted terminal based on WiFi also comprises a velocity transducer and microprocessing unit MCU, described velocity transducer is set up communication with microprocessing unit MCU and is connected, after described microprocessing unit MCU receives the information of velocity transducer transmission, identify whether automobile is kept in motion, when automobile is kept in motion, described microprocessing unit MCU sends instruction to described CPU, and CPU enters the WiFi pattern under high speed travel condition.WiFi pattern under described high speed travel condition is, increases the speed of WiFi, reduces the interval time of WiFi scanning.The speed of described WiFi is the interval time that 350 ~ 500Mpbs, WiFi scan is 0.3 ~ 0.6s.
Being constructed as follows of described power module, the output of power supply connects the magnetic bead of a FB600/0.5A, the electrochemical capacitor being connected with 220 μ F is set, three ceramic disc capacitors in parallel again, its specification is followed successively by 22 μ F, 0.1 μ F, 1000 μ F, object promotes power source performance in automobile, the AC wave of filtering different frequency.
Claims (7)
1., based on a wireless intelligent vehicle mounted terminal of WiFi, at least comprise WiFi antenna, WiFi module, CPU processor, core board and display device;
Described WiFi module at least comprises: π shape filter circuit, radio transmitting and receiving chip, power module, USB unit; Described WiFi module also comprises, power amplifier, low pass filter, band pass filter, low noise amplifier;
Described π shape filter circuit, power module, USB unit are connected with described radio transmitting and receiving chip respectively, described power amplifier, low pass filter, band pass filter, low noise amplifier are also connected with described radio transmitting and receiving chip, described π shape filter circuit connects WiFi antenna, described USB unit is connected with described CPU processor, described CPU processor is connected with described core board, and described display device is arranged based on described core board; Described CPU processor stores the information such as the user name password of user's WiFi network; Further,
The described wireless intelligent vehicle mounted terminal based on WiFi also comprises a velocity transducer and microprocessing unit MCU, described velocity transducer is set up communication with microprocessing unit MCU and is connected, after described microprocessing unit MCU receives the information of velocity transducer transmission, identify whether automobile is kept in motion, when automobile is kept in motion, described microprocessing unit MCU sends instruction to described CPU, and CPU enters the WiFi pattern under high speed travel condition; WiFi pattern under described high speed travel condition is, increases the speed of WiFi, reduces the interval time of WiFi scanning; The speed of described WiFi is the interval time that 300 ~ 600Mpbs, WiFi scan is 0.2 ~ 0.8s.
2. according to claim 1 based on the wireless intelligent vehicle mounted terminal of WiFi, it is characterized in that: the speed of described WiFi is the interval time that 350 ~ 500Mpbs, WiFi scan is 0.3 ~ 0.6s.
3. according to claim 1 based on the wireless intelligent vehicle mounted terminal of WiFi, it is characterized in that: the speed of described WiFi is the interval time that 420Mpbs, WiFi scan is 0.5s.
4. according to claim 1 based on the wireless intelligent vehicle mounted terminal of WiFi, it is characterized in that: being constructed as follows of described power module, the output of power supply connects a magnetic bead, the electrochemical capacitor being connected with 220 μ F is set, three ceramic disc capacitors in parallel again, its specification is followed successively by 22 μ F, 0.1 μ F, 1000 μ F;
Described magnetic bead specification is FB600/0.5A.
5. according to claim 1 based on the wireless intelligent vehicle mounted terminal of WiFi, it is characterized in that: the described wireless intelligent vehicle mounted terminal based on WiFi also comprises a static memory, for storing city Wi-Fi hotspot information, described static memory is connected with described radio transmitting and receiving chip, after the described wireless intelligent vehicle mounted terminal based on WiFi is opened, without the city Wi-Fi hotspot that is certainly dynamically connected during available WiFi wireless network in scope.
6. according to claim 5 based on the wireless intelligent vehicle mounted terminal of WiFi, it is characterized in that: the WiFi pattern under described high speed travel condition is, the city Wi-Fi hotspot that the automatic decipherment distance of described microprocessing unit MCU is nearest, and in time from described static memory recalls information, so that described radio transmitting and receiving chip sets up new connection, in the gap of old connection and new connection, described CPU carries out buffer memory to protect stored continuity to information, and the time that the described wireless intelligent vehicle mounted terminal based on WiFi and city Wi-Fi hotspot connect is within 1s.
7. based on a workflow for the wireless intelligent vehicle mounted terminal of WiFi, it is characterized in that: described workflow is arbitrary based on based on the wireless intelligent vehicle mounted terminal of WiFi by described in claim 1 ~ 6; Be specially: the wireless signal that described WiFi days bundle of lines receives is sent to the radio transmitting and receiving chip of WiFi module, radio transmitting and receiving chip processes rear output USB unit to signal, and sends information to CPU processor; Described CPU processor is sent to core board after the signal received is carried out integration process, achieves the wireless networking capabilities of intelligent vehicle mounted terminal.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510900592.7A CN105406895B (en) | 2015-12-09 | 2015-12-09 | A kind of wireless intelligent vehicle mounted terminal based on WiFi |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510900592.7A CN105406895B (en) | 2015-12-09 | 2015-12-09 | A kind of wireless intelligent vehicle mounted terminal based on WiFi |
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| Publication Number | Publication Date |
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| CN105406895A true CN105406895A (en) | 2016-03-16 |
| CN105406895B CN105406895B (en) | 2018-09-21 |
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| CN201510900592.7A Active CN105406895B (en) | 2015-12-09 | 2015-12-09 | A kind of wireless intelligent vehicle mounted terminal based on WiFi |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111510094A (en) * | 2020-04-14 | 2020-08-07 | 华东计算技术研究所（中国电子科技集团公司第三十二研究所） | Suppression method and system based on anti-serial port electromagnetic leakage |
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| CN105406895B (en) | 2018-09-21 |
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