CN104506250A - Interference preventing device and wireless charging frequency interference avoiding method - Google Patents
Interference preventing device and wireless charging frequency interference avoiding method Download PDFInfo
- Publication number
- CN104506250A CN104506250A CN201410854658.9A CN201410854658A CN104506250A CN 104506250 A CN104506250 A CN 104506250A CN 201410854658 A CN201410854658 A CN 201410854658A CN 104506250 A CN104506250 A CN 104506250A
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- wireless charging
- bus
- frequency
- mcu
- vehicle body
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- Electric Propulsion And Braking For Vehicles (AREA)
- Charge And Discharge Circuits For Batteries Or The Like (AREA)
Abstract
The invention belongs to interference preventing equipment and particularly relates to an interference preventing device and a wireless charging frequency interference avoiding method. The interference preventing device comprises a wireless charging module, an mcu (microprogrammed control unit), a can (controller area network) bus and a vehicle body bus, wherein the mcu is connected with the vehicle body bus and is a microprocessing unit. For solving the problem that wireless charging standby current cannot meet vehicle mounting requirements, the invention provides a wireless charging frequency control method. The wireless charging frequency control method comprises obtaining relevant instructions from a vehicle body through the CAN bus to control transmitting frequency and accordingly can suppress wireless charging interference.
Description
Technical field
The invention belongs to a kind of anti-interference method, particularly relate to a kind of anti-tampering equipment and evade the method for wireless charging frequency interferences.
Background technology
The wireless charging meeting wireless charging alliance standard is now more and more universal, onboard wireless charger also starts commercially to occur, wireless charging alliance standard wireless charging principle, system is made up of (receiver) transmitting terminal (transmitter) and receiving terminal, transmitting terminal is primarily of primary coil, communication, control unit and electric power transfer unit are formed, receiving terminal is primarily of secondary coil, communication unit, control unit, power reception unit and load are formed, by electromagnetic induction technology, energy is transferred to receiving terminal secondary coil by primary coil, transmission frequency 112KHz--205KHz.Wireless charging standby mode designs: according to the Protocol Design of wireless charging alliance standard, the transmission frequency 112KHz--205KHz of transmitting terminal primary coil, and this frequency, with the Intelligent key on car, broadcast receiver frequency conflicts, forms interference, cannot meet depot's requirement.
Summary of the invention
The invention reside in and a kind of method of evading wireless charging frequency interferences is provided.
A kind of anti-tampering equipment, described anti-tampering equipment comprises wireless charging module, mcu, can bus and Vehicle Body Bus, and described mcu is connected with described Vehicle Body Bus.Described mcu is with can bus and IIC function.Described mcu is with can bus and IIC function.
Based on the arbitrary a kind of described method of evading wireless charging frequency interferences of above-mentioned improvement, comprise the steps:
A mcu starts;
B open wireless charge power supply switch;
C Vehicle Body Bus is when the signal of transmission frequency between 112KHz-205KHz, and signal is sent to mcu by can bus by Vehicle Body Bus, and mcu sends the order evading wireless charging normal frequency;
D passes to wireless charging module by IIC functional module;
E wireless charging module changes frequency;
When F Vehicle Body Bus does not need the signal between transmission frequency 112KHz-205KHz, signal is sent to mcu by can bus by Vehicle Body Bus;
G mcu sends signal by IIC functional module, and wireless charging module recovers wireless charging normal frequency.
Further technical scheme of the present invention is: mcu receives can bus line command, wireless charging operating frequency is set to: arrange Frequency point-205KHz.
Further technical scheme of the present invention is: when system acceptance to be resumed work frequency order to Vehicle Body Bus, mcu recovers wireless charging normal frequency by IIC order: 112KHz-205KHz.
Further technical scheme of the present invention is: system is connected by link bus or uart serial port with vehicle body, and uart serial ports is universal asynchronous receiving-transmitting transmitter, and link bus is information interchange transmitter.
Further technical scheme of the present invention is: described mcu receives can bus line command, wireless charging operating frequency is set to: 112KHz-evades Frequency point.
The invention has the beneficial effects as follows: the situation that cannot meet vehicle-mounted requirement for wireless charging standby current, the invention provides a kind of method controlling wireless charging frequency, utilize CAN, obtain related command from vehicle body, control tranmitting frequency, thus suppress wireless charging interference.
Accompanying drawing explanation
Fig. 1 evades the model calling figure of wireless charging interference;
Fig. 2 evades wireless charging interference fundamental diagram;
Embodiment
Below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation:
Embodiment 1
A kind of anti-tampering equipment of the present invention, described anti-tampering equipment has mcu with can bus and wireless charging module, Vehicle Body Bus.Described mcu uses can bus to be connected with Vehicle Body Bus, and mcu is connected with wireless charging module, and mcu uses IIC function and wireless charging module to carry out information exchange, and preferred operation mode of the present invention is:
A mcu starts;
B open wireless charge power supply switch;
C Vehicle Body Bus is when the signal of transmission frequency between 112KHz-205KHz, and signal is sent to mcu by can bus by Vehicle Body Bus, and mcu sends the order evading wireless charging normal frequency;
D passes to wireless charging module by IIC functional module;
E wireless charging module changes frequency;
When F Vehicle Body Bus does not need the signal between transmission frequency 112KHz-205KHz, signal is sent to mcu by can bus by Vehicle Body Bus;
G mcu sends signal by IIC functional module, and wireless charging module recovers wireless charging normal frequency.
When mcu starts, evade wireless charging frequency interferences pattern just to start, open wireless charge power supply simultaneously, wireless charging module and Vehicle Body Bus operate simultaneously, do not interfere with each other, when Vehicle Body Bus is sent in the signal of 112KHz-205KHz frequency, can bus will receive the information from Vehicle Body Bus, information is passed to mcu by can bus, mcu receives information, information is passed to wireless charging module by IIC function, changes the transmission frequency of wireless charging module, and then evade wireless charging frequency interferences.When Vehicle Body Bus sends the signal of not frequency between 112KHz-205KHz, Vehicle Body Bus sends a signal to can bus, and can bus sends to mcu, and mcu passes to wireless charging module by IIC function, and wireless charging module recovers original frequency and carries out work.
Embodiment 2
On the basis of embodiment 1, when Vehicle Body Bus is sent in the signal of frequency between 112KHz-205KHz, Vehicle Body Bus can get higher limit in this frequency as information transmission, signal is sent to mcu by link bus, signal is sent to wireless charging module by IIC function by mcu, after wireless charging module receives information, by frequency inverted for arranging Frequency point-205KHZ.So just can evade wireless charging frequency interferences.
Embodiment 3
On the basis of embodiment 1, when Vehicle Body Bus is sent in the signal of frequency between 112KHz-205KHz, Vehicle Body Bus can get higher limit in this frequency as information transmission, signal is sent to mcu by uart serial ports, signal is sent to wireless charging module by IIC function by mcu, after wireless charging module receives information, by frequency inverted for arranging Frequency point-205KHZ.So just can evade wireless charging frequency interferences.
Claims (6)
1. an anti-tampering equipment, it is characterized in that: described anti-tampering equipment comprises wireless charging module, mcu, can bus and Vehicle Body Bus, described mcu is connected with described Vehicle Body Bus, described mcu is microprocessing unit, wireless charging module is connected with mcu, described mcu is with can bus and IIC functional module, and described can bus is CAN bus, and described IIC functional module is information transfer capability module.
2., based on an a kind of method of evading wireless charging frequency interferences for the anti-tampering equipment of claim 1, it is characterized in that: steps of the method are:
A mcu starts;
B open wireless charge power supply switch;
During the signal of C Vehicle Body Bus between transmission frequency 112KHz-205KHz, signal is sent to mcu by can bus by Vehicle Body Bus, and mcu sends the order evading wireless charging normal frequency;
D passes to wireless charging module by IIC functional module;
E wireless charging module changes frequency;
When F Vehicle Body Bus does not need the signal between transmission frequency 112KHz-205KHz, signal is sent to mcu by can bus by Vehicle Body Bus;
G mcu sends signal by IIC functional module, and wireless charging module recovers wireless charging normal frequency.
3. a kind of method of evading wireless charging frequency interferences according to claim 2, is characterized in that: described mcu receives can bus line command, wireless charging operating frequency is set to: evade Frequency point to 205KHz.
4. a kind of method of evading wireless charging frequency interferences according to claim 2, is characterized in that: described mcu receives can bus line command, wireless charging operating frequency is set to: 112KHz is to evading Frequency point.
5. a kind of method of evading wireless charging frequency interferences according to claim 2, is characterized in that: when system acceptance to be resumed work frequency order to Vehicle Body Bus, mcu recovers wireless charging normal frequency by IIC order: 112KHz to 205KHz.
6. a kind of method of evading wireless charging frequency interferences according to claim 2, it is characterized in that: system is connected by link bus or uart serial ports with vehicle body, uart serial ports is universal asynchronous receiving-transmitting transmitter, and link bus is information interchange transmitter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410854658.9A CN104506250A (en) | 2014-12-31 | 2014-12-31 | Interference preventing device and wireless charging frequency interference avoiding method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410854658.9A CN104506250A (en) | 2014-12-31 | 2014-12-31 | Interference preventing device and wireless charging frequency interference avoiding method |
Publications (1)
| Publication Number | Publication Date |
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| CN104506250A true CN104506250A (en) | 2015-04-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
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| CN201410854658.9A Pending CN104506250A (en) | 2014-12-31 | 2014-12-31 | Interference preventing device and wireless charging frequency interference avoiding method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109690904A (en) * | 2016-09-28 | 2019-04-26 | 英特尔公司 | Technology for wireless charging |
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Patent Citations (8)
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| CN101030434A (en) * | 2006-02-27 | 2007-09-05 | 比亚迪股份有限公司 | Vehicle video/audio controlling system |
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Application publication date: 20150408 |