CN217007689U - Beidou positioning vehicle-mounted terminal - Google Patents
Beidou positioning vehicle-mounted terminal Download PDFInfo
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- CN217007689U CN217007689U CN202122662161.5U CN202122662161U CN217007689U CN 217007689 U CN217007689 U CN 217007689U CN 202122662161 U CN202122662161 U CN 202122662161U CN 217007689 U CN217007689 U CN 217007689U
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Abstract
The utility model discloses a Beidou positioning vehicle-mounted terminal which comprises a shell, wherein a circuit board is fixed in the shell; the circuit board is provided with a Beidou positioning chip, a six-axis sensor, a central processing module and a power supply module; the central processing module is electrically connected with the Beidou positioning chip and the six-axis sensor respectively; the power supply module supplies power to the central processing module, the Beidou positioning chip and the six-axis sensor; the six-axis sensor includes a three-axis acceleration sensor and a gyroscope. According to the utility model, through a high-precision Beidou positioning technology, the accurate charging of the vehicles passing through the roads at all levels can be realized, and the endurance time of the standby soft package battery can be effectively prolonged.
Description
Technical Field
The utility model relates to the technical field of vehicle-mounted terminals, in particular to a Beidou positioning vehicle-mounted terminal.
Background
The free flow charging is a business mode for road charging by utilizing a satellite positioning technology, namely, vehicles are required to be provided with positioning terminals such as a GPS and the like, the vehicles can freely pass on a charging road without speed reduction, and the actual running track of the vehicles is judged through position information reported by a vehicle-mounted GPS positioning terminal, so that the vehicle-mounted GPS positioning terminal is used as a charging basis to realize accurate charging without stopping. In addition, the Beidou satellite positioning technology which is independently researched and developed in China at present is rapidly developed, and has the advantages of more mature technology, higher information confidentiality and the like, the Beidou satellite positioning technology is more and more widely applied to the domestic and civil vehicle-mounted positioning technology, so that the free flow charging research based on Beidou positioning is actively developed in China, and the development of a novel Beidou positioning vehicle-mounted terminal based on the application is one of key steps.
In addition, the current vehicle-mounted positioning terminal is powered by a vehicle-mounted power supply to maintain the operation of the vehicle-mounted positioning terminal only under the condition of normal starting of the vehicle, and the terminal is powered off and shut down when the vehicle-mounted power supply cannot normally supply power and cannot continuously position the position of the vehicle; some vehicle mounted terminals have a backup battery to assist in power supply, but because the vehicle mounted positioning terminal contains a plurality of modules and components and parts, the operation needs to be maintained by electric energy provided by the backup battery, so that the backup battery is too fast in power consumption, the endurance time is short, the vehicle is not enough to support long-time continuous positioning of the vehicle, and the problem needs to be solved.
SUMMERY OF THE UTILITY MODEL
The utility model aims to provide a Beidou positioning vehicle-mounted terminal, which can realize accurate charging of vehicles passing through roads at all levels and effectively prolong the endurance time of a standby soft package battery through a high-precision Beidou positioning technology.
The technical scheme of the utility model is as follows:
a Beidou positioning vehicle-mounted terminal comprises a shell, wherein a circuit board is fixed inside the shell; the circuit board is provided with a Beidou positioning chip, a six-axis sensor, a central processing module and a power supply module; the central processing module is respectively and electrically connected with the Beidou positioning chip and the six-axis sensor, and the Beidou positioning chip is connected with a Beidou positioning antenna arranged in the vehicle-mounted terminal; the power supply module supplies power to the central processing module, the Beidou positioning chip and the six-axis sensor; the six-axis sensor comprises a three-axis acceleration sensor and a gyroscope.
Preferably, the Beidou positioning chip is a high-precision positioning chip with the model of TD 1030.
Preferably, the power module comprises an external power line connected to the circuit board and a standby soft package battery; external power cord is used for connecting vehicle mounted power, does vehicle mounted terminal supplies power, works as when vehicle mounted power does not supply power, by reserve laminate polymer battery supplies power.
Preferably, the central processing module is an MCU, a 256KB FLASH and a 128KB SRAM are arranged in the central processing module, and the working frequency is 120 MHz.
Compared with the prior art, the utility model has the following beneficial effects:
the utility model can realize the accurate positioning of the vehicle when running on each level of road by adopting the high-precision Beidou positioning chip, and the position information data is sent to the super-computing platform for judging the running track of the vehicle after being analyzed and processed so as to accurately measure the vehicle toll, so that the utility model can be applied to free flow toll service of roads. In addition, the starting and stopping states of the vehicle can be automatically judged by adopting the six-axis sensor. Especially, whether the power is continuously supplied can be determined according to the judgment result under the condition that the standby soft package battery supplies power, so that the electric quantity of the standby soft package battery is effectively saved, the endurance time of the standby soft package battery is greatly prolonged, and the long-time positioning requirement of the vehicle can be supported.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings used in the description of the embodiments will be briefly introduced below, and it should be apparent that the drawings in the following description are only preferred embodiments of the present invention and do not limit the scope of the present invention. The drawings are not to scale (except as indicated) and are intended for use in conjunction with the explanations in the following detailed description.
FIG. 1 is a schematic top view of a circuit board according to the present invention;
in the figure: circuit board 1, big dipper location chip 2, external power cord 3, reserve laminate polymer battery 4, six sensors 5, central processing module 6.
Detailed Description
For better understanding of the technical contents of the present invention, specific embodiments will be provided in conjunction with the attached drawings, and the present invention will be further described in conjunction with the attached drawings.
A Beidou positioning vehicle-mounted terminal comprises a shell, wherein a circuit board 1 is fixed inside the shell; the circuit board 1 is provided with a Beidou positioning chip 2, a six-axis sensor 5, a central processing module and a power supply module; the central processing module is respectively and electrically connected with a Beidou positioning chip 2 and a six-axis sensor 5, and the Beidou positioning chip 2 is connected with a Beidou positioning antenna arranged in the vehicle-mounted terminal; the power supply module supplies power to the central processing module, the Beidou positioning chip 2 and the six-axis sensor 5; the six-axis sensor 5 includes a three-axis acceleration sensor and a gyroscope.
Preferably, the Beidou positioning chip 2 is a high-precision positioning chip with the model of TD 1030. Through the high-precision positioning chip using the type, the Beidou foundation reinforcement reference station is combined for deviation rectification, centimeter-level positioning precision can be achieved, lane-level positioning is achieved, roads with different road functions and levels such as expressways, national and provincial roads, tourist highways and the like can be distinguished better, complicated interchange turning conditions are achieved, and road toll of passing vehicles is measured accurately.
Preferably, the power module comprises an external power line 3 connected to the circuit board 1 and a standby soft package battery 4; external power cord 3 is used for connecting vehicle power supply, for the vehicle mounted terminal power supply, when vehicle power supply does not supply power, is supplied power by reserve laminate polymer battery 4.
The central processing module 6 can detect the power supply condition of the vehicle-mounted terminal through detecting the external voltage, the ACC voltage and the voltage of the standby soft package battery 4, and execute a corresponding power supply mode. When the external voltage and the ACC voltage are detected normally, the vehicle-mounted power supply supplies power to the vehicle-mounted terminal, and the voltage is reduced to 4.2V through the DCDC circuit; in addition, the DCDC circuit is connected with a charging circuit, and the standby soft package battery 4 can be charged through the charging circuit when the vehicle-mounted power supply supplies power. When the ACC voltage is not detected, the vehicle-mounted power supply cannot supply power, the central processing module 6 sends an execution instruction to the standby soft package battery 4, and the standby soft package battery 4 starts to supply power to the vehicle-mounted terminal; and voltage monitoring is carried out during power supply, when the voltage of the battery is lower than 3.7V, the central processing module 6 stops supplying power to the standby soft package battery 4, and the vehicle-mounted terminal enters a shutdown mode.
Preferably, the central processing module 6 is an MCU, with 256KB FLASH and 128KB SRAM built therein, and has an operating frequency of 120 MHz.
The six-axis sensor 5 is used for judging the starting and stopping states of the vehicle, and if the vehicle is in a driving state, the power supply module continues to supply power to the vehicle-mounted terminal; if the vehicle-mounted terminal is in the stop state, the central processing module 6 controls the vehicle-mounted terminal to enter a sleep mode so as to reduce the power supply of the power supply module.
A method for judging a vehicle start-stop state by a Beidou positioning vehicle-mounted terminal comprises the following steps:
the vehicle-mounted terminal is arranged on the front windshield of the vehicle in parallel, after the vehicle-mounted terminal is arranged, the six-axis sensor 5 is fixed with the vehicle, the three-dimensional space coordinates of the three-axis acceleration sensor and the gyroscope can represent the motion state of the vehicle, and the data of the three-axis acceleration sensor and the gyroscope in three directions are the activity data of the vehicle in the three directions; specifically, the method comprises the following steps:
(1) calculating the traveling direction and the traveling speed of the target vehicle by adopting a three-axis acceleration sensor; the three axes are respectively: the front of the vehicle is an X-axis forward direction, the left side of the vehicle is a Y-axis forward direction, and the vehicle is a Z-axis forward direction vertically above the ground; acceleration a functions of acceleration a of each direction with respect to time t can be obtained through the acceleration in three directions measured by the triaxial acceleration sensor; meanwhile, the acceleration a is a derivative of the speed, that is, a ═ dv/dt, so that a function v ═ g (t) ═ a dt of the speed v in each direction can be obtained, and the speed in each direction can be calculated; then according to the formula | v | ═ sqrt [ (v)X)2+(vY)2+(vZ)2]The traveling direction and the traveling speed of the vehicle can be calculated;
(2) calculating the angular position of the target vehicle by adopting a gyroscope; the gyroscope is used for measuring the steering angular velocities of the three mutually perpendicular coordinate axes; wherein the pitch angle rotates around the X axis, the yaw angle rotates around the Y axis, and the roll angle rotates around the Z axis; the angular velocities of the steering in the three directions measured by the gyroscope are integrated over time t to obtain the angular position Φ ═ ω dt in each direction, and then according to the formula | Φ | ═ sqrt [ (Φ |) ]X)2+(ΦY)2+(ΦZ)2]The angular position of the vehicle can be calculated;
whether outdoor or indoor, when v or phi is not equal to 0, the vehicle is indicated to be in a driving state; when v, Φ are calculated to be equal to 0 at the same time, and the values are kept constant for fifteen consecutive minutes, it is judged that the vehicle is in a stopped state. Especially under the vehicle mounted power does not supply power, reserve laminate polymer battery 4 is the vehicle mounted terminal power supply condition, stop the state through the judgement and decide whether reserve laminate polymer battery 4 continuously supplies power for vehicle mounted terminal, can practice thrift reserve laminate polymer battery 4's electric quantity.
Both the three-axis acceleration sensor and the gyroscope are commercially available on the open market. In the utility model, the data refresh rate range of the three-axis acceleration sensor is 12.5-1600Hz, the gyroscope is 25-6400Hz, the central processing module 6 is electrically connected with the six-axis sensor 5 through an I2C interface, the data refresh rate of the three-axis acceleration sensor and the gyroscope is respectively set, so that the three-axis acceleration sensor and the gyroscope output original data through a specific refresh rate, and the central processing module 6 calculates and analyzes the acquired original data.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and should not be taken as limiting the scope of the present invention, and any modifications, equivalents, improvements and the like made within the spirit and principle of the present invention should be included in the scope of the present invention.
Claims (3)
1. The utility model provides a big dipper location vehicle mounted terminal which characterized in that: comprises a shell body fixed with a circuit board inside; the circuit board is provided with a Beidou positioning chip, a six-axis sensor, a central processing module and a power supply module; the central processing module is respectively and electrically connected with the Beidou positioning chip and the six-axis sensor, and the Beidou positioning chip is connected with a Beidou positioning antenna arranged in the vehicle-mounted terminal; the power supply module supplies power to the central processing module, the Beidou positioning chip and the six-axis sensor; the power module comprises an external power line connected to the circuit board and a standby soft package battery; the external power line is used for being connected with a vehicle-mounted power supply to supply power to the vehicle-mounted terminal, and when the vehicle-mounted power supply does not supply power, the standby soft package battery supplies power; the six-axis sensor comprises a three-axis acceleration sensor and a gyroscope.
2. The Beidou positioning vehicle-mounted terminal according to claim 1, characterized in that: the Beidou positioning chip is a high-precision positioning chip with the model of TD 1030.
3. The Beidou positioning vehicle-mounted terminal according to claim 1 or 2, characterized in that: the central processing module is an MCU, a 256KB FLASH and a 128KB SRAM are arranged in the central processing module, and the working frequency is 120 MHz.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122662161.5U CN217007689U (en) | 2021-11-02 | 2021-11-02 | Beidou positioning vehicle-mounted terminal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202122662161.5U CN217007689U (en) | 2021-11-02 | 2021-11-02 | Beidou positioning vehicle-mounted terminal |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217007689U true CN217007689U (en) | 2022-07-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202122662161.5U Active CN217007689U (en) | 2021-11-02 | 2021-11-02 | Beidou positioning vehicle-mounted terminal |
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|---|---|
| CN (1) | CN217007689U (en) |
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2021
- 2021-11-02 CN CN202122662161.5U patent/CN217007689U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230918 Address after: No.18, North photovoltaic Road, shiziling Industrial Park, Xiuying District, Haikou City, Hainan Province, 571152 Patentee after: HAINAN JUNENG TECHNOLOGY INNOVATION RESEARCH INSTITUTE CO.,LTD. Address before: No.18, North photovoltaic Road, shiziling Industrial Park, Xiuying District, Haikou City, Hainan Province, 571152 Patentee before: Hainan free flow transportation technology Co.,Ltd. |
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| TR01 | Transfer of patent right |