CN111404636B - Communication method, device and system capable of reducing bus interference - Google Patents
Communication method, device and system capable of reducing bus interference Download PDFInfo
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- CN111404636B CN111404636B CN202010163448.0A CN202010163448A CN111404636B CN 111404636 B CN111404636 B CN 111404636B CN 202010163448 A CN202010163448 A CN 202010163448A CN 111404636 B CN111404636 B CN 111404636B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
- H04L1/0006—Systems modifying transmission characteristics according to link quality, e.g. power backoff by adapting the transmission format
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L12/00—Data switching networks
- H04L12/28—Data switching networks characterised by path configuration, e.g. LAN [Local Area Networks] or WAN [Wide Area Networks]
- H04L12/40—Bus networks
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0058—Allocation criteria
Abstract
The invention discloses a communication method, a device and a system capable of reducing bus interference. Wherein, the method comprises the following steps: in the process of sending data, adjusting the communication frequency of a bus according to a preset rule; and after the communication frequency is adjusted each time, sending frequency identification data to the target equipment, and sending the target data to the target equipment based on the current communication frequency. According to the invention, in the process of sending data, the communication frequency of the bus is adjusted according to the preset rule, frequency identification data is sent to the target equipment after the communication frequency is adjusted each time, and the target data is sent to the target equipment based on the current communication frequency, so that the interference energy of signals is dispersed into a plurality of frequency spectrums by dynamically changing the communication frequency of the bus between the equipment, the interference energy of each frequency spectrum is reduced, and the interference of the communication bus is reduced.
Description
Technical Field
The present invention relates to the field of communications technologies, and in particular, to a communication method, apparatus, and system capable of reducing bus interference.
Background
With the rapid development of electrical devices, communications among the electrical devices are increasing, and in order to meet the communication requirements, the speed of a communication line must be increased.
However, the increase of the communication frequency brings about an increase of Electromagnetic interference, which is not favorable for EMC (Electromagnetic Compatibility) test and reduction of interference of equipment. In order to reduce electromagnetic interference, the purpose of reducing higher harmonic interference can be achieved by delaying the level change of the communication line, but the signal anti-interference capability is reduced due to the delay of the level change of the communication line.
Disclosure of Invention
Embodiments of the present invention provide a communication method, apparatus, and system capable of reducing bus interference, so as to solve the problem of large bus interference caused by increasing communication rate in the prior art.
In order to solve the above technical problem, an embodiment of the present invention provides a communication method, including: in the process of sending data, adjusting the communication frequency of a bus according to a preset rule; and after the communication frequency is adjusted each time, sending frequency identification data to the target equipment, and sending the target data to the target equipment based on the current communication frequency.
Optionally, sending the frequency identification data to the target device includes: generating the frequency identification data according to the current communication frequency and preset reference data; and sending the frequency identification data to the target device.
Optionally, generating the frequency identification data according to the current communication frequency and preset reference data includes: generating a corresponding frequency signal according to the configuration information of the current communication frequency; and modulating the frequency signal by using the preset reference data to generate the frequency identification data.
Optionally, adjusting the communication frequency of the bus according to a preset rule includes: when the preset period arrives, a frequency different from the frequency used in the previous period is selected from at least two preset frequencies as a new communication frequency.
Optionally, the preset at least two frequencies include: the fundamental frequency and its harmonic frequencies are preset.
The embodiment of the invention also provides a communication method, which comprises the following steps: receiving frequency identification data; determining the current communication frequency of the bus according to the frequency identification data; and analyzing the received target data based on the current communication frequency.
Optionally, determining the current communication frequency of the bus according to the frequency identification data includes: acquiring the period of the frequency identification data; and determining the current communication frequency according to the period.
Optionally, analyzing the received target data based on the current communication frequency includes: generating a corresponding frequency signal according to the configuration information of the current communication frequency; and analyzing the target data according to the frequency signal.
Optionally, the receiving the frequency identification data includes: detecting that the bus level is converted from an idle state into a data transmission state; and acquiring the frequency identification data from the received data according to preset reference data.
An embodiment of the present invention further provides a communication apparatus, including: the adjusting module is used for adjusting the communication frequency of the bus according to a preset rule in the data sending process; and the sending module is used for sending frequency identification data to the target equipment after the communication frequency is adjusted every time, and sending the target data to the target equipment based on the current communication frequency.
An embodiment of the present invention further provides a communication apparatus, including: a receiving module for receiving frequency identification data; the determining module is used for determining the current communication frequency of the bus according to the frequency identification data; and the analysis module is used for analyzing the received target data based on the current communication frequency.
An embodiment of the present invention further provides a communication system, including: the source device is connected with the target device through a bus; the source device comprises the communication device of the third embodiment of the invention; the target device comprises the communication device of the fourth embodiment of the invention.
Embodiments of the present invention further provide a computer-readable storage medium, on which a computer program is stored, where the computer program, when executed by a processor, implements the method according to the first embodiment of the present invention, or implements the method according to the second embodiment of the present invention.
By applying the technical scheme of the invention, in the process of sending data, the communication frequency of the bus is adjusted according to the preset rule, after the communication frequency is adjusted each time, the frequency identification data is sent to the target equipment, and the target data is sent to the target equipment based on the current communication frequency, so that the interference energy of signals is dispersed into a plurality of frequency spectrums by dynamically changing the communication frequency of the bus between the equipment, the interference energy of each frequency spectrum is reduced, and the interference of the communication bus is reduced.
Drawings
Fig. 1 is a flowchart of a communication method according to an embodiment of the present invention;
fig. 2 is a schematic flow chart of a source device side according to an embodiment of the present invention;
fig. 3 is a flowchart of a communication method according to a second embodiment of the present invention;
fig. 4 is a schematic flowchart of a target device side according to a second embodiment of the present invention;
fig. 5 is a block diagram of a communication device according to a third embodiment of the present invention;
fig. 6 is a block diagram of a communication device according to a fourth embodiment of the present invention;
fig. 7 is a block diagram of a communication system according to a fifth embodiment of the present invention;
fig. 8 is a schematic structural diagram of a transmitting portion of a source device according to a fifth embodiment of the present invention;
fig. 9 is a schematic structural diagram of a receiving portion of a target device according to a fifth embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention clearer, the present invention will be described in further detail with reference to the accompanying drawings, and it is apparent that the described embodiments are only a part of the embodiments of the present invention, not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example one
The present embodiment provides a communication method, which can be performed by a source device (also referred to as a transmitting device), and which can reduce interference of a communication bus. Fig. 1 is a flowchart of a communication method according to an embodiment of the present invention, as shown in fig. 1, the method includes the following steps:
s101, in the process of sending data, adjusting the communication frequency of the bus according to a preset rule.
And S102, after the communication frequency is adjusted each time, sending frequency identification data to the target equipment, and sending the target data to the target equipment based on the current communication frequency.
Wherein the frequency identification data is used to inform the target device of the adjusted communication frequency. At the receiving end, for one frequency, the interference energy of the signal will gradually accumulate to reach the peak value, and by dynamically changing the communication frequency, the embodiment has changed to use another frequency for communication before the signal interference energy of the current frequency reaches the peak value, so that the interference energy of each frequency signal cannot accumulate to the peak value, that is, the interference energy of the signal is reduced. It is understood that the interference energy is dispersed in the time dimension.
In the communication method of this embodiment, in the process of sending data, the communication frequency of the bus is adjusted according to a preset rule, after the communication frequency is adjusted each time, frequency identification data is sent to the target device, and the target data is sent to the target device based on the current communication frequency, so that by dynamically changing the communication frequency of the bus between devices, the interference energy of the signal is dispersed into a plurality of frequency spectrums, the interference energy of each frequency spectrum is reduced, and the interference of the communication bus is reduced.
Specifically, the sending of the frequency identification data to the target device includes: generating frequency identification data according to the current communication frequency and preset reference data; frequency identification data is transmitted to the target device.
The preset reference data is data, which is agreed in advance by the source device and the target device, and is used for informing the adjusted communication frequency to the target device. The target device can recognize the frequency identification data according to the preset reference data. Thereby enabling dynamic changes in the frequency of communication between the source device and the target device using the frequency identification data.
Further, generating frequency identification data according to the current communication frequency and preset reference data includes: generating a corresponding frequency signal according to the configuration information of the current communication frequency; and modulating the frequency signal by using preset reference data to generate frequency identification data.
The configuration information of the communication frequency is related to the device type of the frequency generator, the configuration information can be voltage for the voltage-controlled device, the corresponding relation between the voltage and the frequency is stored in the voltage-controlled device, and the corresponding frequency signal is output by changing the voltage; for a digitally controlled device, the configuration information may include: input frequency, output frequency, division factor, etc.
In an optional embodiment, the adjusting the communication frequency of the bus according to the preset rule includes: when the preset period arrives, a frequency different from the frequency used in the previous period is selected from at least two preset frequencies as a new communication frequency. The frequency is dynamically adjusted according to the preset period, and the new frequency is different from the frequency used in the previous period, so that the dispersion of signal interference energy can be ensured, and the interference of a communication bus is reduced.
Preferably, the preset at least two frequencies include: the fundamental frequency and its harmonic frequencies are preset. The preset base frequency is predetermined by the source device and the target device, for example, 1000 Hz.
As shown in fig. 2, which is a schematic flow diagram of the source device side, the source device starts to transmit data, randomly adjusts the communication frequency, transmits frequency identification data, and then transmits target data, i.e., a specific data frame.
Example two
The present embodiment provides a communication method, which can be performed by a target device (also referred to as a receiving device), and which can reduce interference of a communication bus. The same or corresponding terms as those of the above-described embodiments are explained, and the description of the present embodiment is omitted.
Fig. 3 is a flowchart of a communication method according to a second embodiment of the present invention, and as shown in fig. 3, the method includes the following steps:
s301, frequency identification data is received.
S302, determining the current communication frequency of the bus according to the frequency identification data.
S303, the received target data is analyzed based on the current communication frequency.
According to the communication method, the current communication frequency of the bus is determined according to the received frequency identification data, and then the received target data is analyzed based on the current communication frequency, so that the target device can know the dynamic change of the bus communication frequency between the target device and the source device through the frequency identification data, and the interference energy of signals can be dispersed into a plurality of frequency spectrums by dynamically changing the communication frequency, so that the interference energy of each frequency spectrum is reduced, and the interference of the communication bus is reduced.
In an alternative embodiment, determining the current communication frequency of the bus based on the frequency identification data comprises: acquiring the period of frequency identification data; the current communication frequency is determined according to the period. In this embodiment, the target device uses the period of the frequency identification data to calculate the current communication frequency, so that the data receiver of the target device can be set according to the current communication frequency to receive and analyze the target data, thereby implementing smooth transmission and correct analysis of the data.
In an optional embodiment, parsing the received target data based on the current communication frequency includes: generating a corresponding frequency signal according to the configuration information of the current communication frequency; and analyzing the target data according to the frequency signal. For configuration information, please refer to the explanation in the first embodiment, which is not described in detail in this embodiment.
In an alternative embodiment, receiving frequency identification data comprises: detecting that the bus level is converted from an idle state into a data transmission state; frequency identification data is acquired from the received data according to preset reference data. The bus level is changed from an idle state to a data transmission state, which indicates that the source device starts to send data, and the target device identifies frequency identification data from the received data, so as to acquire the current communication frequency, and correctly analyze the received target data.
As shown in fig. 4, which is a schematic flow diagram of the target device side, the target device detects that the bus level is changed from the idle state to the data transmission state, detects the period of the frequency identification data and converts the period into the communication frequency, sets the communication frequency of the data receiver, then receives the communication data frame, and correctly analyzes the data frame.
EXAMPLE III
The present embodiment provides a communication apparatus, which can be used to implement the communication method described in the first embodiment. The apparatus may be implemented by software and/or hardware, and the apparatus may be generally integrated in a device that transmits data.
Fig. 5 is a block diagram of a communication device according to a third embodiment of the present invention, and as shown in fig. 5, the communication device includes:
an adjusting module 51, configured to adjust a communication frequency of a bus according to a preset rule in a data sending process;
and a sending module 52, configured to send frequency identification data to the target device after adjusting the communication frequency each time, and send the target data to the target device based on the current communication frequency.
Optionally, the sending module 52 includes:
the first generation unit is used for generating frequency identification data according to the current communication frequency and preset reference data;
a transmitting unit, configured to transmit the frequency identification data to the target device.
Optionally, the first generating unit is specifically configured to: generating a corresponding frequency signal according to the configuration information of the current communication frequency; and modulating the frequency signal by using preset reference data to generate frequency identification data.
Optionally, the adjusting module 51 is specifically configured to: when the preset period arrives, a frequency different from the frequency used in the previous period is selected from at least two preset frequencies as a new communication frequency.
The preset at least two frequencies include: the fundamental frequency and its harmonic frequencies are preset.
The device can execute the method provided by the first embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method. For technical details that are not described in detail in this embodiment, reference may be made to the method provided in the first embodiment of the present invention.
Example four
This embodiment provides a communication apparatus, which can be used to implement the communication method described in the second embodiment. The apparatus may be implemented by software and/or hardware, and the apparatus may generally be integrated in a device that receives data.
Fig. 6 is a block diagram of a communication device according to a fourth embodiment of the present invention, and as shown in fig. 6, the communication device includes:
a receiving module 61, configured to receive frequency identification data;
a determining module 62, configured to determine a current communication frequency of the bus according to the frequency identification data;
and the analyzing module 63 is configured to analyze the received target data based on the current communication frequency.
Optionally, the determining module 62 includes:
a first acquisition unit configured to acquire a period of frequency identification data;
and the determining unit is used for determining the current communication frequency according to the period.
Optionally, the parsing module 63 includes:
the second generating unit is used for generating a corresponding frequency signal according to the configuration information of the current communication frequency;
and the analysis unit is used for analyzing the target data according to the frequency signal.
Optionally, the receiving module 61 includes:
the detection unit is used for detecting that the bus level is converted into a data transmission state from an idle state;
and the second acquisition unit is used for acquiring the frequency identification data from the received data according to the preset reference data.
The device can execute the method provided by the second embodiment of the invention, and has the corresponding functional modules and beneficial effects of the execution method. For details of the technique not described in detail in this embodiment, reference may be made to the method provided in the second embodiment of the present invention.
EXAMPLE five
The present embodiment provides a communication system, as shown in fig. 7, including: a source device 10 and a target device 20, the source device and the target device being connected by a communication bus 30. The source device comprises the communication device provided by the third embodiment of the invention. The target device comprises the communication device provided by the fourth embodiment of the invention.
The structures of the source device and the target device are described below with reference to specific examples.
Referring to fig. 8, a schematic diagram of a transmitting part of a source device includes: a first main control unit 11, a first frequency generator 12 and a data transmitter 13. The first frequency generator provides a reference frequency of the bus data, and the frequency can be adjusted by the first main control unit so as to change the frequency of the bus communication. When data is sent every time, the first main control unit randomly selects a communication frequency and sends the configuration information of the communication frequency to the first frequency generator, and the first frequency generator adjusts the output frequency according to the configuration information. The first master control unit then transmits the frequency reference data to the data transmitter, which transmits a pulse signal, i.e., frequency identification data, based on the frequency generated by the first frequency generator. After the frequency identification data is sent, the first main control unit transmits target data to be sent to the data transmitter, and the data transmitter sends the target data to be sent to the bus by taking the frequency generated by the first frequency generator as a reference.
Referring to fig. 9, a schematic diagram of a receiving part of a target device includes: a second master control unit 21, a second frequency generator 22 and a data receiver 23. The data receiver receives the frequency identification data firstly, the second main control unit calculates the communication frequency of the current bus by measuring the period of the frequency identification data and sends the frequency information to the second frequency generator, and the second frequency generator adjusts the output frequency to be the same as the frequency of the sending end. And then the second main control unit analyzes the received data frame according to the same frequency as the transmitting end.
In practical applications, a device may include both the communication apparatus for transmitting described in the third embodiment (or the structure shown in fig. 8) and the communication apparatus for receiving described in the fourth embodiment (or the structure shown in fig. 9), that is, the device has both transmitting and receiving functions.
EXAMPLE six
The present embodiment provides a computer-readable storage medium on which a computer program is stored, which when executed by a processor implements the communication method on the source device side according to the first embodiment of the present invention or implements the communication method on the target device side according to the second embodiment of the present invention.
The above-described embodiments of the apparatus are merely illustrative, and the units described as separate parts may or may not be physically separate, and parts displayed as units may or may not be physical units, may be located in one place, or may be distributed on a plurality of network units. Some or all of the modules may be selected according to actual needs to achieve the purpose of the solution of the present embodiment.
Through the above description of the embodiments, those skilled in the art will clearly understand that each embodiment can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware. With this understanding in mind, the above-described technical solutions may be embodied in the form of a software product, which can be stored in a computer-readable storage medium such as ROM/RAM, magnetic disk, optical disk, etc., and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device, etc.) to execute the methods described in the embodiments or some parts of the embodiments.
Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (11)
1. A method of communication, comprising:
in the process of sending data, adjusting the communication frequency of a bus according to a preset rule;
after adjusting the communication frequency each time, sending frequency identification data to target equipment, and sending the target data to the target equipment based on the current communication frequency;
wherein sending frequency identification data to the target device comprises:
generating the frequency identification data according to the current communication frequency and preset reference data;
transmitting the frequency identification data to the target device;
the preset reference data is data which is agreed in advance by the source equipment and the target equipment and is used for informing the adjusted communication frequency to the target equipment, and the target equipment obtains the preset reference data according to the received frequency identification data;
generating the frequency identification data according to the current communication frequency and preset reference data, wherein the frequency identification data comprises the following steps:
generating a corresponding frequency signal according to the configuration information of the current communication frequency;
and modulating the frequency signal by using the preset reference data to generate the frequency identification data.
2. The method of claim 1, wherein adjusting the communication frequency of the bus according to a predetermined rule comprises:
when the preset period arrives, a frequency different from the frequency used in the previous period is selected from at least two preset frequencies as a new communication frequency.
3. The method of claim 2, wherein the preset at least two frequencies comprise: the fundamental frequency and its harmonic frequencies are preset.
4. A method of communication, comprising:
receiving frequency identification data;
determining the current communication frequency of the bus according to the frequency identification data;
analyzing the received target data based on the current communication frequency;
the frequency identification data is generated by the source equipment according to the current communication frequency and preset reference data; the preset reference data is data which is agreed in advance by the source equipment and the target equipment and is used for informing the adjusted communication frequency to the target equipment, and the target equipment obtains the preset reference data according to the received frequency identification data;
the source device generates the frequency identification data according to the current communication frequency and preset reference data, and the method comprises the following steps: generating a corresponding frequency signal according to the configuration information of the current communication frequency; and modulating the frequency signal by using the preset reference data to generate the frequency identification data.
5. The method of claim 4, wherein determining a current communication frequency of the bus based on the frequency identification data comprises:
acquiring the period of the frequency identification data;
and determining the current communication frequency according to the period.
6. The method of claim 4, wherein parsing the received target data based on the current communication frequency comprises:
generating a corresponding frequency signal according to the configuration information of the current communication frequency;
and analyzing the target data according to the frequency signal.
7. The method of claim 4, wherein receiving frequency identification data comprises:
detecting that the bus level is converted from an idle state into a data transmission state;
and acquiring the frequency identification data from the received data according to preset reference data.
8. A communications apparatus, comprising:
the adjusting module is used for adjusting the communication frequency of the bus according to a preset rule in the data sending process;
the sending module is used for sending frequency identification data to target equipment after adjusting the communication frequency each time, and sending the target data to the target equipment based on the current communication frequency;
the sending module comprises:
the first generation unit is used for generating frequency identification data according to the current communication frequency and preset reference data;
a transmitting unit configured to transmit frequency identification data to a target device;
the preset reference data is data which is agreed in advance by the source equipment and the target equipment and is used for informing the adjusted communication frequency to the target equipment, and the target equipment obtains the preset reference data according to the received frequency identification data;
the first generating unit is specifically configured to: generating a corresponding frequency signal according to the configuration information of the current communication frequency; and modulating the frequency signal by using preset reference data to generate frequency identification data.
9. A communications apparatus, comprising:
a receiving module for receiving frequency identification data;
the determining module is used for determining the current communication frequency of the bus according to the frequency identification data;
the analysis module is used for analyzing the received target data based on the current communication frequency;
the frequency identification data is generated by the source equipment according to the current communication frequency and preset reference data; the preset reference data is data which is agreed in advance by the source equipment and the target equipment and is used for informing the adjusted communication frequency to the target equipment, and the target equipment obtains the preset reference data according to the received frequency identification data;
the source device generates the frequency identification data according to the current communication frequency and preset reference data, and the method comprises the following steps: generating a corresponding frequency signal according to the configuration information of the current communication frequency; and modulating the frequency signal by using the preset reference data to generate the frequency identification data.
10. A communication system, comprising: the source device is connected with the target device through a bus;
the source device comprises the communication apparatus of claim 8;
the target device comprises the communication apparatus of claim 9.
11. A computer-readable storage medium, on which a computer program is stored, which, when being executed by a processor, carries out the method of any one of claims 1 to 3, or carries out the method of any one of claims 4 to 7.
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| CN107517000A (en) * | 2017-08-22 | 2017-12-26 | 广东美的制冷设备有限公司 | Power circuit switching signal trembles frequency control method, device and readable storage medium storing program for executing |
| CN108845911A (en) * | 2018-05-31 | 2018-11-20 | 福州瑞芯微电子股份有限公司 | A kind of SOC chip bus dynamic multi-level frequency regulating circuit and method |
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