WO2016192288A1 - 一种调频信号的传导干扰调试方法及系统、电子设备 - Google Patents

一种调频信号的传导干扰调试方法及系统、电子设备 Download PDF

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Publication number
WO2016192288A1
WO2016192288A1 PCT/CN2015/093033 CN2015093033W WO2016192288A1 WO 2016192288 A1 WO2016192288 A1 WO 2016192288A1 CN 2015093033 W CN2015093033 W CN 2015093033W WO 2016192288 A1 WO2016192288 A1 WO 2016192288A1
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Prior art keywords
matching circuit
impedance matching
frequency
conducted interference
signal strength
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PCT/CN2015/093033
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English (en)
French (fr)
Inventor
宁新武
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Shanghai Feixun Data Communication Technology Co Ltd
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Shanghai Feixun Data Communication Technology Co Ltd
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Priority to EP15893936.3A priority Critical patent/EP3293899A4/en
Priority to US15/575,344 priority patent/US20180159639A1/en
Publication of WO2016192288A1 publication Critical patent/WO2016192288A1/zh
Anticipated expiration legal-status Critical
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/21—Monitoring; Testing of receivers for calibration; for correcting measurements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/20—Monitoring; Testing of receivers
    • H04B17/29—Performance testing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B17/00—Monitoring; Testing
    • H04B17/30—Monitoring; Testing of propagation channels
    • H04B17/309—Measuring or estimating channel quality parameters
    • H04B17/318—Received signal strength
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/14—Demodulator circuits; Receiver circuits

Definitions

  • the invention belongs to the technical field of debugging of electronic devices, and relates to a debugging method and system, in particular to a method and system for conducting interference detection of frequency modulated signals, and an electronic device.
  • Contemporary communication technology is more and more developed, and electronic equipment is becoming more and more advanced.
  • mobile terminals in electronic devices especially based on the third mobile communication technology (3G) and the fourth mobile communication technology.
  • 3G third mobile communication technology
  • LTE Long Term Evolution
  • the existing mobile terminals basically have the function of FM (frequency modulation), which increases the multimedia experience of the mobile terminal, so that the user can enjoy the fun of the FM radio at any time.
  • FM frequency modulation
  • the battery capacity of the terminal is required to be larger and larger, and the functions are more and more, so that the space for the PCB in the terminal is getting smaller and smaller, and the space for the FM module is getting smaller and smaller.
  • FM will do the necessary protection during design, it is inevitable to introduce some interference.
  • the FM chip in a mobile phone is very sensitive to noise, and is easily disturbed by noise of other circuit modules, resulting in a problem of searching for a fake station when automatically searching for a channel, which is more serious in a weak signal environment.
  • the prior art only provides a solution for how to eliminate the FM dummy station, and does not propose a solution for the modulation of the FM (FM) conducted interference, and the electronic device cannot have optimized frequency modulation (FM) performance.
  • an object of the present invention is to provide a method and system for debugging conducted interference of a frequency modulated signal, and an electronic device, which are used to solve the problem that the conducted interference source cannot be found in the prior art to perform FM conducted interference. Debugging makes electronic devices unable to have better conduction performance problems.
  • an aspect of the present invention provides a method for debugging a conducted interference of a frequency modulated signal, which is applied to an electronic device, and the FM signal passes through an impedance matching circuit to an FM chip of the electronic device through a frequency modulation antenna.
  • the impedance matching circuit includes a first impedance matching circuit connected to the FM chip and a second impedance matching circuit connected to the first impedance matching circuit
  • the conductive interference debugging method of the FM signal includes the following steps: When the FM antenna is in the disconnect mode, performing a station search in the entire FM frequency band, and collecting the received signal strength value of each frequency point in the entire FM frequency band when the FM antenna is in the disconnect mode; determining each of the collected frequencies Whether the received signal strength value of the frequency point is within the standard range of the received signal strength of the frequency point. If not, it indicates that there is conducted interference, and proceeds to the next step; if yes, it indicates that there is no conducted interference, and returns to the previous step to continue the acquisition.
  • the receiving signal of each frequency point in the entire FM frequency band when the FM antenna is in the disconnect mode Value lookup conducted interference sources, according to conducted interference source is performed to match the conductive interference source debug operation.
  • the step of searching for a conducted interference source includes: causing the electronic device to be in a first debugging mode, performing a station search in the entire FM frequency band, and collecting the entire frequency modulation frequency band when the electronic device is in the first debugging mode.
  • the received signal strength value of each frequency point includes: determining whether the received signal strength value of each frequency point in the entire FM frequency band is within the frequency range receiving signal strength standard range when the electronic device is in the first debugging mode, and if so, Determining that the conducted interference is from the second impedance matching circuit, disconnecting the ground circuit component in the second impedance matching circuit; if not, proceeding to the next step;
  • the method for debugging conducted interference of the FM signal further includes: when determining that the conducted interference is from the second impedance matching circuit, the first impedance matching circuit and the FM chip, causing the electronic device to be from the first debugging mode Switching to the second debugging mode, performing a station search in the entire FM frequency band, and collecting a received signal strength value of each frequency point in the entire FM frequency band when the electronic device is in the second debugging mode; determining the electronic device In the second debugging mode, whether the received signal strength value of each frequency point in the entire FM frequency band is within the frequency range receiving signal strength standard range, and if so, determining that the conducted interference is from the second impedance matching circuit and the first An impedance matching circuit, disconnecting the ground circuit component in the first impedance matching circuit and the second impedance matching circuit; if not, proceeding to the next step; determining that the electronic device is in the second debugging mode, each of the entire FM frequency band Whether the received signal strength value of the frequency point meets the pre-determined
  • the method for debugging conducted interference of the FM signal further includes: switching the electronic device from the first debug mode to the second when determining that the conductive interference is from the first impedance matching circuit and the FM chip a debugging mode, performing a radio search in the entire FM frequency band, and collecting a received signal strength value of each frequency point in the entire FM frequency band when the electronic device is in the second debugging mode; determining that the electronic device is in the second debugging mode Whether the received signal strength value of each frequency point in the entire FM frequency band is within the frequency range received signal strength standard range, and if so, determining that the conducted interference is from the first impedance matching circuit, disconnecting the first impedance matching Ground circuit component in the circuit; if not, proceed to the next step; determine whether the received signal strength value of each frequency point in the entire FM frequency band meets the pre-determination criterion when the electronic device is in the second debugging mode, and if so, determine The conducted interference is from the first impedance matching circuit, and the ground circuit component in
  • the frequency point received signal strength standard range is a frequency point received signal strength standard value to a frequency point received signal strength standard value + an error threshold, and the frequency received signal strength standard value is equal to -114 dbm.
  • Another aspect of the present invention provides a conductive interference debugging system for a frequency modulated signal, which is applied to an electronic device, and the FM signal passes through an impedance matching circuit to an FM chip of the electronic device through an FM antenna, and the impedance matching circuit includes a first impedance matching circuit connected to the FM chip and a second impedance matching circuit connected to the first impedance matching circuit
  • the conducted interference debugging system of the FM signal comprises: a received signal strength value collecting module, used in the When the FM antenna is in the disconnect mode, performing a station search in the entire FM frequency band, and collecting the received signal strength value of each frequency point in the entire FM frequency band when the FM antenna is in the disconnect mode; and collecting the received signal strength value a module connected to the detection module, configured to determine whether the received signal strength value of each frequency point is within a frequency range of the received signal strength standard; if not, an indication module for indicating the presence of conducted interference is invoked; Calling the indication module to indicate that there is no conducted interference, and the received signal The degree collection
  • control module is configured to enable the electronic device to be in a first debugging mode, invoke the received signal strength value collection module, perform a radio search in the entire FM frequency band, and collect the electronic device in the first type.
  • the received signal strength value of each frequency point in the entire FM frequency band in the debug mode determining that the electronic device is in the first debug mode Whether the received signal strength value of each frequency point in the FM frequency band is within the frequency range receiving signal strength standard range, and if so, determining that the conducted interference is from the second impedance matching circuit first impedance matching circuit and the frequency modulation chip, and continues to search for conducted interference
  • Source disconnecting the ground circuit component in the first impedance matching circuit and the second impedance matching circuit, and detecting a circuit of the FM chip; if not, determining that the conducted interference is from the first impedance matching circuit and frequency modulation The chip continues to look for sources of conducted interference.
  • control module is further configured to: when determining that the conductive interference is from the second impedance matching circuit, the first impedance matching circuit and the FM chip, to switch the electronic device from the first debugging mode to the first In the two debugging modes, the radio search is performed in the entire FM frequency band, and the received signal strength value of each frequency point in the entire FM frequency band is collected when the electronic device is in the second debugging mode; determining that the electronic device is in the second debugging Whether the received signal strength value of each frequency point in the entire FM frequency band is within the frequency range received signal strength standard range, and if so, determining that the conducted interference is from the second impedance matching circuit and the first impedance matching circuit, Turning on the ground circuit component in the first impedance matching circuit and the second impedance matching circuit; if not, continuing to determine whether the received signal strength value of each frequency point in the entire FM frequency band is consistent when the electronic device is in the second debugging mode Prefabricating the criterion, if yes, determining that
  • control module is further configured to: when determining that the conducted interference is from the first impedance matching circuit and the FM chip, to switch the electronic device from the first debugging mode to the second debugging mode, Performing a radio search in the FM frequency band to collect the received signal strength value of each frequency point in the entire FM frequency band when the electronic device is in the second debugging mode; and determining that the electronic device is in the second debugging mode, each time in the entire FM frequency band Whether the received signal strength value of a frequency point is within the frequency range receiving signal strength standard range, and if so, determining that the conducted interference is from the first impedance matching circuit, and disconnecting the ground circuit component in the first impedance matching circuit; If not, determining whether the received signal strength value of each frequency point in the entire FM frequency band meets the pre-determination criterion when the electronic device is in the second debugging mode, and if yes, determining that the conducted interference is from the first impedance a matching circuit that disconnects the ground circuit component of the first imped
  • Another aspect of the present invention provides an electronic device, including: a plug-in FM antenna; a frequency modulation chip matched with the plug-in FM antenna, used for station search; wherein the FM antenna passes through a matching circuit and The FM chip connection; and the conducted interference debugging system of the FM signal connected to the FM chip and the matching circuit, configured to collect the received signal strength of each frequency point in the entire FM frequency band of the electronic device in multiple control modes Value according to the electronic device
  • the received signal strength value of each frequency point in the entire FM frequency band is determined by multiple control modes to determine whether the electronic device has conducted interference, and if not, the conducted interference source is searched for, and the conducted interference source is matched according to the conducted interference source. Debug operation; if so, no debugging is required.
  • the method and system for transmitting conducted interference of the FM signal of the present invention and the electronic device have the following beneficial effects:
  • the method and system for transmitting conducted interference of a frequency modulated signal according to the present invention are applied in an electronic device, and the source of the conducted interference is determined by collecting the RSSI value of the FM and the matching of the FM signal line, and the FM performance of the electronic device is optimized. It provides a rectification direction for the debugging of FM conducted interference.
  • FIG. 1 shows a schematic diagram of a connection circuit of a frequency modulation antenna, an impedance matching circuit, and a frequency modulation chip.
  • FIG. 2 is a schematic flow chart showing a method for debugging a conducted interference of a frequency modulated signal according to the present invention.
  • FIG. 3 is a schematic diagram showing the specific process of step S4 in the method for debugging conducted interference of a frequency modulated signal according to the present invention.
  • FIG. 4 is a schematic diagram showing the principle structure of a conducted interference debugging system for a frequency modulated signal according to the present invention.
  • FIG. 5 shows a schematic structural diagram of an electronic device according to the present invention.
  • the method and system for conducting interference detection of a frequency modulated signal according to the present invention, and interference in an electronic device are generally classified into radiated interference and conducted interference, and most of the FM interference of an electronic device comes from conducted interference.
  • the invention completes the positioning of the FM conducted interference source by collecting the received signal strength value (RSSI) of the frequency modulation at each frequency point and the matching on and off on the FM antenna, and performs corresponding debugging operations according to the positioning of the conducted interference source.
  • RSSI received signal strength value
  • the embodiment provides a method for debugging a conducted interference of a frequency modulated signal, and the method for debugging the conducted interference of the frequency modulated signal is applied to an electronic device, and the electronic device includes a smart phone, a tablet computer, and the like.
  • FIG. 1 shows a connection circuit diagram of a frequency modulation antenna, an impedance matching circuit, and a frequency modulation chip.
  • the FM signal is passed through the impedance matching circuit 2 to the FM chip 3 of the electronic device, and the impedance matching circuit 2 includes a first impedance matching circuit 21 connected to the FM chip 3, in this embodiment.
  • the first impedance matching circuit is also called a chip end impedance matching circuit, and a second impedance matching circuit 22 connected to the first impedance matching circuit 21.
  • the second impedance matching circuit is also It is called FM antenna impedance matching circuit.
  • FIG. 2 is a schematic flowchart showing the method for debugging the conducted interference of the FM signal. As shown in the figure, the method for debugging conducted interference of the FM signal comprises the following steps:
  • the FM antenna when the FM antenna is in the disconnection mode, for example, the state in which the mobile phone is not inserted into the earphone, performing a station search in the entire FM frequency band, and collecting each frequency point in the entire FM frequency band when the FM antenna is in the disconnection mode.
  • the received signal strength value that is, the RSSI value of each frequency point.
  • the ideal value of the RSSI value of each frequency point collected in the off mode of the FM antenna is -114 dbm.
  • the frequency range of the received signal strength of the frequency point is a frequency point received signal strength standard value to a frequency point received signal strength standard value + an error threshold, that is, (-114dbm, -114dbm+ ⁇ ), the frequency point The received signal strength standard value is equal to -114dbm.
  • step S4 searching for a conducted interference source, and performing a debugging operation matching the conducted interference source according to the conducted interference source.
  • FIG. 3 is a schematic diagram of the specific process of step S4.
  • the step S4 includes the following steps:
  • the electronic device is in the first debugging mode, and performs a station search in the entire FM frequency band to collect a received signal strength value of each frequency point in the entire FM frequency band when the electronic device is in the first debugging mode.
  • the first debug mode refers to a mode in which the first impedance matching circuit and the second impedance matching circuit are disconnected.
  • step S42 determining whether the received signal strength value of each frequency point in the entire FM frequency band is within the frequency range receiving signal strength standard range when the electronic device is in the first debugging mode, and if yes, performing step S43, that is, determining the conducting The interference is only from the second impedance matching circuit, and the ground circuit component in the second impedance matching circuit is disconnected.
  • the inductor L1 and the capacitor C2 in the second impedance circuit are disconnected; if not, Continue to the next step.
  • step S44 determining whether the received signal strength value of each frequency point in the entire FM frequency band meets the pre-determination criterion when the electronic device is in the first debugging mode, and if yes, executing step S45, that is, determining that the conducted interference is from the first
  • the second impedance matching circuit, the first impedance matching circuit and the frequency modulation chip as a whole need to further find the conducted interference source, that is, continue to perform step S47; if not, execute step S46 to determine that the conducted interference comes from the first impedance matching circuit As with the FM chip as a whole, it is necessary to continue to search for the conducted interference source and continue to perform step S53.
  • the pre-made judgment criterion may be based on the set interference improvement criterion, and if the received signal strength of the frequency point exceeding the first judgment threshold is within the range of the frequency-received signal strength standard, it is considered to meet the pre-determined criterion. If the received signal strength of the frequency point exceeding the second judgment threshold is not within the frequency range received signal strength standard range, it is considered that the pre-determination criterion is not met.
  • the second debugging mode refers to a mode in which the FM chip and the first impedance matching circuit are disconnected.
  • step S48 determining whether the received signal strength value of each frequency point in the entire FM frequency band is within the frequency range receiving signal strength standard range when the electronic device is in the second debugging mode, and if yes, executing step S49, determining the first An impedance matching circuit and a second impedance matching circuit both have conducted interference, and the grounding circuit components in the first impedance matching circuit and the second impedance matching circuit are disconnected.
  • Inductance L2 and electricity in the first impedance matching circuit The capacitor C3 and disconnect the inductor L1 and the capacitor C2 in the second impedance circuit; if not, proceed to the next step S50;
  • step S50 determining whether the received signal strength value of each frequency point in the entire FM frequency band meets the pre-determination criterion when the electronic device is in the second debugging mode, and if yes, executing step S51, that is, determining that the conducted interference is from the first An impedance matching circuit, a second impedance matching circuit, and a frequency modulation chip, disconnecting the first impedance matching circuit, the second impedance matching circuit is connected to the ground device, that is, disconnecting the inductor L2 and the capacitor C3 and disconnecting the first impedance matching circuit In the second impedance circuit, the inductor L1 and the capacitor C2 are detected, and the chip circuit in the FM chip is detected, for example, detecting the power of the FM chip and the trace of the important signal; if not, performing step S52, that is, determining the conducted interference From the second impedance matching circuit and the frequency modulation chip, disconnecting the device connected to the ground by the second matching circuit, and disconnecting the inductor L1 and the capacitor C2
  • the electronic device When it is determined that the conducted interference is from the first impedance matching circuit and the FM chip, the electronic device is switched from the first debugging mode to the second debugging mode, and the station search is performed in the entire FM frequency band. And collecting the received signal strength value of each frequency point in the entire FM frequency band when the electronic device is in the second debugging mode.
  • step S54 determining whether the received signal strength value of each frequency point in the entire FM frequency band is within the frequency range receiving signal strength standard range when the electronic device is in the second debugging mode, and if yes, executing step S55 to determine the conducted interference. Only from the first impedance matching circuit, disconnecting the ground circuit component in the first impedance matching circuit, that is, breaking the inductor L1 and the capacitor C2 in the second impedance circuit; if not, proceeding to the next step S56;
  • step S56 determining whether the received signal strength value of each frequency point in the entire FM frequency band meets the pre-determination criterion when the electronic device is in the second debugging mode, and if yes, executing step S57, that is, determining that the conducted interference is from the first impedance
  • the matching circuit and the frequency modulation chip disconnect the ground circuit component in the first impedance matching circuit, that is, disconnect the inductor L2 and the capacitor C3 in the first impedance matching circuit, and detect the chip circuit in the FM chip, for example, detecting the FM chip a power supply, and a trace of the important signal; if not, proceeding to step S58, that is, determining that the conducted interference is only from the FM chip, detecting a chip circuit in the FM chip, for example, detecting a power of the FM chip, and an important signal The line.
  • the method for debugging conducted interference of the FM signal described in this embodiment determines the source of the conducted interference by collecting the RSSI value of the FM and the matching of the FM signal line, and optimizes the FM performance to provide debugging for the FM conducted interference. Rectify the direction.
  • the embodiment provides a conductive interference debugging system 4 for frequency modulation signals, which is applied to an electronic device, and the conductive interference debugging method for the frequency modulated signal is applied to an electronic device, and the electronic device includes a smart phone, a tablet computer, and the like.
  • the connection circuit diagram of the FM antenna, the impedance matching circuit, and the FM chip is shown in FIG. 2.
  • the FM signal passes through the impedance matching circuit 2 to the FM chip 3 of the electronic device, and the impedance matching circuit 2 includes a connection with the FM chip 3
  • the first impedance matching circuit 21, in the embodiment, the first impedance matching circuit is also called a chip end impedance matching circuit, and the second impedance matching circuit 22 connected to the first impedance matching circuit 21 is in the present
  • the second impedance matching circuit is also called an FM antenna impedance matching circuit.
  • FIG. 4 shows a schematic structural diagram of a conducted interference debugging system for a frequency modulated signal.
  • the conducted interference debugging system 4 of the FM signal includes a received signal strength value acquisition module 41, a detection module 42, an indication module 43, and a regulation module 44.
  • the received signal strength value collection module 41 is configured to perform a station search in the entire FM frequency band when the FM antenna is in the disconnection mode, for example, the state in which the mobile phone is not inserted into the earphone, and the acquisition of the FM antenna is disconnected.
  • the received signal strength value of each frequency point in the entire FM frequency band in the mode that is, the RSSI value of each frequency point.
  • the RSSI value of each frequency point collected in the off mode of the FM antenna is an ideal value, that is, -114 dbm.
  • the detecting module 42 connected to the received signal strength value acquiring module 41 is configured to determine whether the received signal strength value of each of the collected frequency points is within the frequency range receiving signal strength standard range, and if not, the calling is used for Instructing the presence of the conducted interference indicating module 42 and the regulating module 44; if so, invoking the indicating module 42 to indicate that there is no conducted interference, and the received signal strength value collecting module 41 continues to collect the FM antenna in the disconnected mode The received signal strength value for each frequency point in the entire FM band.
  • the frequency range of the received signal strength of the frequency point is a frequency point received signal strength standard value to a frequency point received signal strength standard value + an error threshold, that is, (-114dbm, -114dbm+ ⁇ ), the frequency point The received signal strength standard value is equal to -114dbm.
  • the control module 44 respectively, and the received signal strength value acquisition module 41 and the indication module 43 are used to find a conducted interference source, and perform a debugging operation that matches the conducted interference source according to the conducted interference source.
  • the control module 44 has the following functions:
  • the electronic device is placed in the first debugging mode, and the received signal strength value collecting module 41 is called to perform a station search in the entire FM frequency band, and each of the entire FM frequency bands is collected when the electronic device is in the first debugging mode.
  • the received signal strength value of the frequency point refers to a mode in which the first impedance matching circuit and the second impedance matching circuit are disconnected.
  • step S43 Determining whether the received signal strength value of each frequency point in the entire FM frequency band is within the frequency range receiving signal strength standard range when the electronic device is in the first debugging mode, and if yes, executing step S43, that is, determining the conducted interference only From the second impedance matching circuit, disconnecting the ground circuit component in the second impedance matching circuit, in this embodiment, disconnecting the inductor L1 and the capacitor C2 in the second impedance circuit; if not, continuing to judge When the electronic device is in the first debugging mode, whether the received signal strength value of each frequency point in the entire FM frequency band meets the pre-determination criterion, and if yes, step S45 is performed to determine that the conducted interference is from the second impedance matching.
  • the pre-determined criterion can be based on Setting the interference improvement criterion, if the received signal strength of the frequency point exceeding the first judgment threshold is within the frequency range received signal strength standard range, it is considered to meet the pre-determination criterion, and if there is a frequency point exceeding the second judgment threshold If the signal strength is not within the standard range of the received signal strength of the frequency point, it is considered to be inconsistent with the pre-determined criterion.
  • the regulating module 44 is configured to: if it is determined that the conducted interference is from the second impedance matching circuit, first When the impedance matching circuit and the frequency modulation chip are used, the control module 44 causes the electronic device to switch from the first debugging mode to the second debugging mode, and invokes the received signal strength value collecting module 41 in the entire frequency modulation band. Performing a station search to collect the received signal strength value of each frequency point in the entire FM frequency band when the electronic device is in the second debugging mode.
  • the second debugging mode refers to a mode in which the FM chip and the first impedance matching circuit are disconnected.
  • the electronic device When it is determined that the conducted interference is from the second impedance matching circuit, the first impedance matching circuit and the FM chip, the electronic device is switched from the first debugging mode to the second debugging mode, and is performed in the entire FM frequency band.
  • the station searches for the received signal strength value of each frequency point in the entire FM frequency band when the electronic device is in the second debugging mode.
  • the second debugging mode refers to a mode in which the FM chip and the first impedance matching circuit are disconnected.
  • the electronic device Determining whether the received signal strength value of each frequency point in the entire FM frequency band is within the frequency range receiving signal strength standard range when the electronic device is in the second debugging mode, and if yes, determining the first impedance matching circuit and the second The impedance matching circuit has conduction interference, and the grounding circuit component in the first impedance matching circuit and the second impedance matching circuit is disconnected. In this embodiment, as shown in FIG. 1, the inductance in the first impedance matching circuit is turned off.
  • the regulating module 44 is configured to:
  • the electronic device When the conductive interference is determined from the first impedance matching circuit and the FM chip, the electronic device is switched from the first debugging mode to the second debugging mode, and the received signal strength value collecting module 41 is called. Performing a radio search in the entire FM frequency band to collect the received signal strength value of each frequency point in the entire FM frequency band when the electronic device is in the second debugging mode.
  • step S55 Determining the received signal of each frequency point in the entire FM frequency band when the electronic device is in the second debugging mode Whether the intensity value is within the frequency range receiving signal strength standard range, and if yes, executing step S55, determining that the conducted interference is only from the first impedance matching circuit, and disconnecting the ground circuit component in the first impedance matching circuit, that is, Disconnecting the inductor L1 and the capacitor C2 in the second impedance circuit; if not, continuing to determine whether the received signal strength value of each frequency point in the entire FM frequency band meets the pre-determined criterion when the electronic device is in the second debugging mode, If yes, determining that the conducted interference is from the first impedance matching circuit, and the frequency modulation chip disconnects the ground circuit component in the first impedance matching circuit, that is, disconnects the inductor L2 and the capacitor C3 in the first impedance matching circuit, and detects a chip circuit in the FM chip, for example, detecting a power supply of the FM chip, and
  • the conducted interference debugging system of the FM signal described in this embodiment is applied in an electronic device to determine the source of the conducted interference by collecting the RSSI value of the FM and the matching of the FM signal line, and optimizing the FM performance of the electronic device.
  • the debugging of FM conducted interference provides a rectification direction.
  • This embodiment provides an electronic device 5.
  • the electronic device 5 includes a plug-in FM antenna 51, a frequency modulation chip 52, a matching circuit 53, and a conducted interference debugging system 54 for frequency modulation signals.
  • a frequency modulation chip 52 matching the plug-in FM antenna 51 is used for station search.
  • the FM antenna is connected to the FM chip through the matching circuit 53;
  • the conducted interference debugging system 54 of the FM signal connected to the FM chip 52 and the matching circuit 53 is configured to collect the received signal strength value of each frequency point in the entire FM frequency band of the electronic device in multiple control modes. Determining whether the electronic device has conducted interference according to the received signal strength value of each frequency point in the entire FM frequency band of the electronic device in various control modes; if not, searching for a conducted interference source, performing and conducting according to the conducted interference source The debug source matches the debug operation; if so, no debug operations are required.
  • the conducted interference debug system 54 of the FM signal has all of the functions of the conducted interference debug system of the FM signal described in the second embodiment.
  • the method and system for transmitting conducted interference of a frequency modulated signal according to the present invention are applied in an electronic device, and the source of the conducted interference is determined by collecting the RSSI value of the FM and the matching of the FM signal line.
  • the FM performance is optimized to provide a rectification direction for the debugging of FM conducted interference. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

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  • Monitoring And Testing Of Transmission In General (AREA)

Abstract

本发明提供一种调频信号的传导干扰调试方法，包括以下步骤：在调频天线处于断开模式时，在整个调频频段内进行电台搜索，采集调频天线处于断开模式时整个调频频段内每一频点的接收信号强度值；判断所述采集到的每一频点的接收信号强度值是否位于频点接收信号强度标准范围内，若否，则指示存在传导干扰，并转入下一步骤；若是，则指示不存在传导干扰，返回上一步骤继续采集调频天线处于断开模式时整个调频频段内每一频点的接收信号强度值；查找传导干扰源，根据传导干扰源执行与传导干扰源相匹配的调试操作。本发明通过采集FM的RSSI值配合FM信号线的匹配通断来确定传导干扰的来源，对电子设备的FM性能进行了优化，为FM传导干扰的调试提供了整改方向。

Description

一种调频信号的传导干扰调试方法及系统、电子设备 技术领域
本发明属于电子设备的调试技术领域，涉及一种调试方法及系统，特别是涉及一种调频信号的传导干扰调试方法及系统、电子设备。
背景技术
当代通信科技越来越发达，而电子设备也越来越先进，尤其是随着通信技术的发展，电子设备中的移动终端，特别是基于第三移动通信技术(3G)、第四移动通信技术(4G)和长期演进系统(LTE)的智能终端中硬件配置越来越强大，功能应用越来越繁多使其成为现如今人们生活工作的必需品。
而现有的移动终端基本上都具备了FM(调频)的功能，这增加了移动终端的多媒体体验，，使得用户能随时享受到调频收音机带来的乐趣。随着智能移动终端的飞速发展，要求终端的电池容量越来越大，功能越来越多，这样终端内PCB的摆件空间越来越小留给FM模块的空间也越来越小。虽然在设计时FM会做必要的保护，但是还是不可避免的引入一些干扰。
例如，手机中的FM芯片对噪声很敏感，很容易受到其他电路模块的噪声干扰，导致在自动搜索频道时搜索到假台的问题，该问题在弱信号环境下显得更加严重。现有技术中判断某个台有效是根据RSSI>-96dbm来判断，如果在某个频点的噪声干扰RSSI>-96dbm，则会被认为搜索到一个电台，其实这并不是一个真正的电台，而是噪声干扰，这就是产生搜索到假台的原因。
而现有技术中仅仅对如何消除FM假台提供了解决方案，而并没有对调频(FM)传导干扰的调试提出解决方案，无法使电子设备具有优化的调频(FM)性能。
因此，如何提供一种调频信号的传导干扰调试方法及系统、电子设备，以解决现有技术中无法查找出传导干扰源以便对调频传导干扰进行调试使得电子设备无法具备较好的传导性能，实已成为本领域从业者亟待解决的技术问题。
发明内容
鉴于以上所述现有技术的缺点，本发明的目的在于提供一种调频信号的传导干扰调试方法及系统、电子设备，用于解决现有技术中无法查找出传导干扰源以便对调频传导干扰进行 调试使得电子设备无法具备较好的传导性能的问题。
为实现上述目的及其他相关目的，本发明一方面提供一种调频信号的传导干扰调试方法，应用于电子设备，所述调频信号通过调频天线经过一阻抗匹配电路到达所述电子设备的调频芯片，所述阻抗匹配电路包括与所述调频芯片连接的第一阻抗匹配电路和与所述第一阻抗匹配电路连接的第二阻抗匹配电路，所述调频信号的传导干扰调试方法包括以下步骤：在所述调频天线处于断开模式时，在整个调频频段内进行电台搜索，采集所述调频天线处于断开模式时整个调频频段内每一频点的接收信号强度值；判断所述采集到的每一频点的接收信号强度值是否位于频点接收信号强度标准范围内，若否，则指示存在传导干扰，并转入下一步骤；若是，则指示不存在传导干扰，返回上一步骤继续采集所述调频天线处于断开模式时整个调频频段内每一频点的接收信号强度值；查找传导干扰源，根据传导干扰源执行与传导干扰源相匹配的调试操作。
可选地，所述查找传导干扰源的步骤包括：令所述电子设备处于第一种调试模式，在整个调频频段内进行电台搜索，采集所述电子设备处于第一种调试模式时整个调频频段内每一频点的接收信号强度值；判断所述电子设备处于第一种调试模式时整个调频频段内每一频点的接收信号强度值是否位于频点接收信号强度标准范围内，若是，则判定所述传导干扰来自所述第二阻抗匹配电路，断开所述第二阻抗匹配电路中接地电路元件；若否，继续下一步骤；
判断所述电子设备处于第一种调试模式时整个调频频段内每一频点的接收信号强度值是否符合预制判断标准，若是，则判定所述传导干扰来自第二阻抗匹配电路第一阻抗匹配电路和调频芯片，继续查找传导干扰源；断开所述第一阻抗匹配电路和第二阻抗匹配电路中接地电路元件，及检测所述调频芯片的电路；若否，则判定所述传导干扰来自所述第一阻抗匹配电路和调频芯片，继续查找传导干扰源。
可选地，所述调频信号的传导干扰调试方法还包括：在判定所述传导干扰来自第二阻抗匹配电路，第一阻抗匹配电路与调频芯片时，令所述电子设备从第一种调试模式切换至所述第二种调试模式，在整个调频频段内进行电台搜索，采集所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值；判断所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值是否位于频点接收信号强度标准范围内，若是，则判定所述传导干扰来自所述第二阻抗匹配电路和第一阻抗匹配电路，断开所述第一阻抗匹配电路和第二阻抗匹配电路中接地电路元件；若否，继续下一步骤；判断所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值是否符合预制判断标准，若是， 则判定所述传导干扰来自所述第二阻抗匹配电路，第一阻抗匹配电路及调频芯片，断开所述第一阻抗匹配电路和第二阻抗匹配电路中接地电路元件，及检测所述调频芯片的电路；若否，则判定所述传导干扰来自所述第二阻抗匹配电路和调频芯片，断开所述第二阻抗匹配电路中接地电路元件，及检测所述调频芯片的电路。
可选地，所述调频信号的传导干扰调试方法还包括：在判定所述传导干扰来自第一阻抗匹配电路和调频芯片时，令所述电子设备从所述第一种调试模式切换至第二种调试模式，在整个调频频段内进行电台搜索，采集所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值；判断所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值是否位于频点接收信号强度标准范围内，若是，则判定所述传导干扰来自所述第一阻抗匹配电路，断开所述第一阻抗匹配电路中接地电路元件；若否，则继续下一步骤；判断所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值是否符合预制判断标准，若是，则判定所述传导干扰来自所述第一阻抗匹配电路，断开所述第一阻抗匹配电路中接地电路元件；若否，判定所述传导干扰来自所述调频芯片，检测所述调频芯片的电路。
可选地，所述频点接收信号强度标准范围为频点接收信号强度标准值至频点接收信号强度标准值+误差阈值，所述频点接收信号强度标准值等于－114dbm。
本发明另一方面还提供一种调频信号的传导干扰调试系统，应用于电子设备，所述调频信号通过调频天线经过一阻抗匹配电路到达所述电子设备的调频芯片，所述阻抗匹配电路包括与所述调频芯片连接的第一阻抗匹配电路和与所述第一阻抗匹配电路连接的第二阻抗匹配电路，所述调频信号的传导干扰调试系统包括：接收信号强度值采集模块，用于在所述调频天线处于断开模式时，在整个调频频段内进行电台搜索，采集所述调频天线处于断开模式时整个调频频段内每一频点的接收信号强度值；与所述接收信号强度值采集模块连接的检测模块，用于判断所述采集到的每一频点的接收信号强度值是否位于频点接收信号强度标准范围内，若否，则调用用于指示存在传导干扰的指示模块；若是，则调用所述指示模块用于指示不存在传导干扰，和所述接收信号强度值采集模块继续采集所述调频天线处于断开模式时整个调频频段内每一频点的接收信号强度值；及与所述接收信号强度值采集模块和指示模块连接的调控模块用于查找传导干扰源，根据传导干扰源执行与传导干扰源相匹配的调试操作。
可选地，所述调控模块用于令所述电子设备处于第一种调试模式，调用所述接收信号强度值采集模块，在整个调频频段内进行电台搜索，采集所述电子设备处于第一种调试模式时整个调频频段内每一频点的接收信号强度值；判断所述电子设备处于第一种调试模式时整个 调频频段内每一频点的接收信号强度值是否位于频点接收信号强度标准范围内，若是，则判定所述传导干扰来自第二阻抗匹配电路第一阻抗匹配电路和调频芯片，继续查找传导干扰源；断开所述第一阻抗匹配电路和第二阻抗匹配电路中接地电路元件，及检测所述调频芯片的电路；若否，则判定所述传导干扰来自所述第一阻抗匹配电路和调频芯片，继续查找传导干扰源。
可选地，所述调控模块还用于在判定所述传导干扰来自第二阻抗匹配电路，第一阻抗匹配电路与调频芯片时，令所述电子设备从第一种调试模式切换至所述第二种调试模式，在整个调频频段内进行电台搜索，采集所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值；判断所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值是否位于频点接收信号强度标准范围内，若是，则判定所述传导干扰来自所述第二阻抗匹配电路和第一阻抗匹配电路，断开所述第一阻抗匹配电路和第二阻抗匹配电路中接地电路元件；若否，继续判断所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值是否符合预制判断标准，若是，则判定所述传导干扰来自所述第二阻抗匹配电路，第一阻抗匹配电路及调频芯片，断开所述第一阻抗匹配电路和第二阻抗匹配电路中接地电路元件，及检测所述调频芯片的电路；若否，则判定所述传导干扰来自所述第二阻抗匹配电路和调频芯片，断开所述第二阻抗匹配电路中接地电路元件，及检测所述调频芯片的电路。
可选地，所述调控模块还用于在判定所述传导干扰来自第一阻抗匹配电路和调频芯片，令所述电子设备从所述第一种调试模式切换至第二种调试模式，在整个调频频段内进行电台搜索，采集所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值；判断所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值是否位于频点接收信号强度标准范围内，若是，则判定所述传导干扰来自所述第一阻抗匹配电路，断开所述第一阻抗匹配电路中接地电路元件；若否，则继续判断所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值是否符合预制判断标准，若是，则判定所述传导干扰来自所述第一阻抗匹配电路，断开所述第一阻抗匹配电路中接地电路元件；若否，判定所述传导干扰来自所述调频芯片，检测所述调频芯片的电路。
本发明又一方面还提供一种电子设备，包括：拔插式调频天线；与所述拔插式调频天线匹配的调频芯片，用于电台搜索；其中，所述调频天线通过一匹配电路与所述调频芯片连接；及与所述调频芯片和匹配电路连接的，调频信号的传导干扰调试系统，用于采集所述电子设备处于多种控制模式下整个调频频段内每一频点的接收信号强度值，根据所述电子设备处 于多种控制模式下整个调频频段内每一频点的接收信号强度值判断所述电子设备是否存在传导干扰，若否，则查找传导干扰源，根据传导干扰源执行与传导干扰源相匹配的调试操作；若是，则无需执行调试操作。
如上所述，本发明的调频信号的传导干扰调试方法及系统、电子设备，具有以下有益效果：
本发明所述的调频信号的传导干扰调试方法及系统应用在电子设备中，通过采集FM的RSSI值配合FM信号线的匹配通断来确定传导干扰的来源，对电子设备的FM性能进行了优化，为FM传导干扰的调试提供了整改方向。
附图说明
图1显示为调频天线、阻抗匹配电路、及调频芯片的连接电路示意图。
图2显示为本发明的调频信号的传导干扰调试方法流程示意图。
图3显示为本发明的调频信号的传导干扰调试方法中步骤S4的具体流程示意图。
图4显示为本发明的调频信号的传导干扰调试系统原理结构示意图。
图5显示为本发明的电子设备原理结构示意图。
元件标号说明
1         调频天线
2         阻抗匹配电路
3         调频芯片
21        第一阻抗匹配电路
22        第二阻抗匹配电路
4         调频信号的传导干扰调试系统
41        接收信号强度值采集模块
42        检测模块
43        指示模块
44        调控模块
S1～S4    步骤
S41～S58  步骤
具体实施方式
以下通过特定的具体实例说明本发明的实施方式，本领域技术人员可由本说明书所揭露的内容轻易地了解本发明的其他优点与功效。本发明还可以通过另外不同的具体实施方式加以实施或应用，本说明书中的各项细节也可以基于不同观点与应用，在没有背离本发明的精神下进行各种修饰或改变。需说明的是，在不冲突的情况下，以下实施例及实施例中的特征可以相互组合。
需要说明的是，以下实施例中所提供的图示仅以示意方式说明本发明的基本构想，遂图式中仅显示与本发明中有关的组件而非按照实际实施时的组件数目、形状及尺寸绘制，其实际实施时各组件的型态、数量及比例可为一种随意的改变，且其组件布局型态也可能更为复杂。
本发明所述的调频信号的传导干扰调试方法及系统、和电子设备中干扰一般分为辐射干扰和传导干扰，而电子设备的调频干扰大多数来自于传导干扰。本发明通过采集调频在各个频点的接收信号强度值(RSSI)配合FM天线上的匹配通断来完成FM传导干扰源的定位，根据传导干扰源的定位执行相应的调试操作。
实施例一
本实施例提供给一种调频信号的传导干扰调试方法，所述调频信号的传导干扰调试方法应用于电子设备，所述电子设备包括智能手机，平板电脑等。请参阅图1，显示为调频天线、阻抗匹配电路、及调频芯片的连接电路图。所述调频信号通过调频天线1经过一阻抗匹配电路2到达所述电子设备的调频芯片3，所述阻抗匹配电路2包括与所述调频芯片3连接的第一阻抗匹配电路21，在本实施例中，所述第一阻抗匹配电路也叫做芯片端阻抗匹配电路，和与所述第一阻抗匹配电路21连接的第二阻抗匹配电路22，在本实施例中，所述第二阻抗匹配电路也叫做调频天线阻抗匹配电路。请参阅图2，显示为调频信号的传导干扰调试方法流程示意图。如图所示，所述调频信号的传导干扰调试方法包括以下步骤：
S1，在所述调频天线处于断开模式时，例如，手机未插入耳机的状态，在整个调频频段内进行电台搜索，采集所述调频天线处于断开模式时整个调频频段内每一频点的接收信号强度值，即各频点的RSSI值。在所述调频天线处于断开模式下采集到的各频点的RSSI值的理想值为-114dbm。
S2，判断所述采集到的每一频点的接收信号强度值是否位于频点接收信号强度标准范围内，若否，则执行步骤S3和步骤S4；若是，则执行步骤S5，即指示不存在传导干扰，返回步骤S1，继续采集所述调频天线处于断开模式时整个调频频段内每一频点的接收信号强度值。 在本实施例中，所述频点接收信号强度标准范围为频点接收信号强度标准值至频点接收信号强度标准值+误差阈值，即为(-114dbm，-114dbm+△)，所述频点接收信号强度标准值等于－114dbm。
S3，指示存在传导干扰。
S4，查找传导干扰源，根据传导干扰源执行与传导干扰源相匹配的调试操作。请参阅图3，显示为步骤S4的具体流程示意图。所述步骤S4包括以下步骤：
S41，令所述电子设备处于第一种调试模式，在整个调频频段内进行电台搜索，采集所述电子设备处于第一种调试模式时整个调频频段内每一频点的接收信号强度值。在本实施例中，所述第一种调试模式是指将第一阻抗匹配电路和第二阻抗匹配电路之间断开的模式。
S42，判断所述电子设备处于第一种调试模式时整个调频频段内每一频点的接收信号强度值是否位于频点接收信号强度标准范围内，若是，则执行步骤S43，即判定所述传导干扰只来自所述第二阻抗匹配电路，断开所述第二阻抗匹配电路中接地电路元件，在本实施例中，即断开所述第二阻抗电路中电感L1和电容C2；若否，继续下一步骤。
S44，判断所述电子设备处于第一种调试模式时整个调频频段内每一频点的接收信号强度值是否符合预制判断标准，若是，则执行步骤S45，即判定所述传导干扰来自所述第二阻抗匹配电路，第一阻抗匹配电路与调频芯片这个整体，需要进一步查找传导干扰源，即继续执行步骤S47；若否，则执行步骤S46，判定所述传导干扰来自所述第一阻抗匹配电路和调频芯片这个整体，需要继续查找所述传导干扰源即继续执行步骤S53。在本实施例中，所述预制判断标准可以根据设定干扰改善标准，若有超过第一判断阈值的频点的接收信号强度位于频点接收信号强度标准范围内时，则认为符合预制判断标准，若有超过第二判断阈值的频点的接收信号强度未位于频点接收信号强度标准范围内时，则认为不符合预制判断标准。
S47，在判定所述传导干扰来自第二阻抗匹配电路，第一阻抗匹配电路与调频芯片时，令所述电子设备从所述第一种调试模式切换至第二种调试模式，在整个调频频段内进行电台搜索，采集所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值。在本实施例中，所述第二种调试模式是指将调频芯片与第一阻抗匹配电路之间断开的模式。
S48，判断所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值是否位于频点接收信号强度标准范围内，若是，则执行步骤S49，则判定所述第一阻抗匹配电路与第二阻抗匹配电路都存在传导干扰，断开所述第一阻抗匹配电路和第二阻抗匹配电路中接地电路元件，在本实施例中，如图1所示，即断开第一阻抗匹配电路中电感L2和电 容C3和断开所述第二阻抗电路中电感L1和电容C2；若否，则继续下一步骤S50；
S50，判断所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值是否符合预制判断标准，若是，则执行步骤S51，即判定所述传导干扰来自所述第一阻抗匹配电路、第二阻抗匹配电路以及调频芯片，断开第一阻抗匹配电路第二阻抗匹配电路连接到地的器件，即断开第一阻抗匹配电路中电感L2和电容C3和断开所述第二阻抗电路中电感L1和电容C2，并检测所述调频芯片中芯片电路，例如，检测调频芯片的电源，和重要信号的走线；若否，执行步骤S52，即判定所述传导干扰来自第二阻抗匹配电路与调频芯片，断开第二匹配电路连接到地的器件，及断开所述第二阻抗电路中电感L1和电容C2，并检测所述调频芯片中芯片电路，例如，检测调频芯片的电源，和重要信号的走线。
S53，在判断所述传导干扰来自所述第一阻抗匹配电路和调频芯片时，令所述电子设备从第一种调试模式切换至所述第二种调试模式，在整个调频频段内进行电台搜索，采集所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值。
S54，判断所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值是否位于频点接收信号强度标准范围内，若是，则执行步骤S55，判定所述传导干扰只来自所述第一阻抗匹配电路，断开所述第一阻抗匹配电路中接地电路元件，即断开所述第二阻抗电路中电感L1和电容C2；若否，继续下一步骤S56；
S56，判断所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值是否符合预制判断标准，若是，则执行步骤S57，即判定所述传导干扰来自第一阻抗匹配电路，及调频芯片，断开第一阻抗匹配电路中接地电路元件，即断开第一阻抗匹配电路中电感L2和电容C3，并检测所述调频芯片中芯片电路，例如，检测调频芯片的电源，和重要信号的走线；若否，则执行步骤S58，即判定所述传导干扰只来自所述调频芯片，检测所述调频芯片中芯片电路，例如，检测调频芯片的电源，和重要信号的走线。
本实施例所述的调频信号的传导干扰调试方法，通过采集FM的RSSI值配合FM信号线的匹配通断来确定传导干扰的来源，对FM性能进行了优化，为FM传导干扰的调试提供了整改方向。
实施例二
本实施例提供一种调频信号的传导干扰调试系统4，应用于电子设备，所述调频信号的传导干扰调试方法应用于电子设备，所述电子设备包括智能手机，平板电脑等。调频天线、阻抗匹配电路、及调频芯片的连接电路图如图2所示。所述调频信号通过调频天线1经过一阻抗匹配电路2到达所述电子设备的调频芯片3，所述阻抗匹配电路2包括与所述调频芯片3连接 的第一阻抗匹配电路21，在本实施例中，所述第一阻抗匹配电路也叫做芯片端阻抗匹配电路，和与所述第一阻抗匹配电路21连接的第二阻抗匹配电路22，在本实施例中，所述第二阻抗匹配电路也叫做调频天线阻抗匹配电路。请参阅图4，显示为调频信号的传导干扰调试系统原理结构示意图。所述调频信号的传导干扰调试系统4包括接收信号强度值采集模块41、检测模块42、指示模块43、及调控模块44。
其中，所述接收信号强度值采集模块41用于在所述调频天线处于断开模式时，例如，手机未插入耳机的状态，在整个调频频段内进行电台搜索，采集所述调频天线处于断开模式时整个调频频段内每一频点的接收信号强度值，即各频点的RSSI值。在所述调频天线处于断开模式下采集到的各频点的RSSI值是理想值，即-114dbm。
与所述接收信号强度值采集模块41连接的检测模块42用于判断所述采集到的每一频点的接收信号强度值是否位于频点接收信号强度标准范围内，若否，则调用用于指示存在传导干扰的指示模块42和调控模块44；若是，则调用所述指示模块42以指示不存在传导干扰，和所述接收信号强度值采集模块41继续采集所述调频天线处于断开模式时整个调频频段内每一频点的接收信号强度值。在本实施例中，所述频点接收信号强度标准范围为频点接收信号强度标准值至频点接收信号强度标准值+误差阈值，即为(-114dbm，-114dbm+△)，所述频点接收信号强度标准值等于－114dbm。
分别与所述接收信号强度值采集模块41和指示模块43的调控模块44用于查找传导干扰源，根据传导干扰源执行与传导干扰源相匹配的调试操作。所述调控模块44具有以下功能：
令所述电子设备处于第一种调试模式，调用所述接收信号强度值采集模块41，在整个调频频段内进行电台搜索，采集所述电子设备处于第一种调试模式时整个调频频段内每一频点的接收信号强度值。在本实施例中，所述第一种调试模式是指将第一阻抗匹配电路和第二阻抗匹配电路之间断开的模式。
判断所述电子设备处于第一种调试模式时整个调频频段内每一频点的接收信号强度值是否位于频点接收信号强度标准范围内，若是，则执行步骤S43，即判定所述传导干扰只来自所述第二阻抗匹配电路，断开所述第二阻抗匹配电路中接地电路元件，在本实施例中，即断开所述第二阻抗电路中电感L1和电容C2；若否，继续判断所述电子设备处于第一种调试模式时整个调频频段内每一频点的接收信号强度值是否符合预制判断标准，若是，则执行步骤S45，即判定所述传导干扰来自所述第二阻抗匹配电路，第一阻抗匹配电路与调频芯片这个整体，需要进一步查找传导干扰源。若否，则判定所述传导干扰来自所述第一阻抗匹配电路和调频芯片这个整体，需要继续查找所述传导干扰源。在本实施例中，所述预制判断标准可以根据 设定干扰改善标准，若有超过第一判断阈值的频点的接收信号强度位于频点接收信号强度标准范围内时，则认为符合预制判断标准，若有超过第二判断阈值的频点的接收信号强度未位于频点接收信号强度标准范围内时，则认为不符合预制判断标准。
在判定所述传导干扰来自所述第二阻抗匹配电路，第一阻抗匹配电路与调频芯片时，所述调控模块44用于：若判定所述传导干扰来自所述第二阻抗匹配电路，第一阻抗匹配电路与调频芯片时，所述调控模块44令所述电子设备从所述第一种调试模式切换至第二种调试模式，调用所述接收信号强度值采集模块41，在整个调频频段内进行电台搜索，采集所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值。在本实施例中，所述第二种调试模式是指将调频芯片与第一阻抗匹配电路之间断开的模式。
在判定所述传导干扰来自第二阻抗匹配电路，第一阻抗匹配电路与调频芯片时，令所述电子设备从所述第一种调试模式切换至第二种调试模式，在整个调频频段内进行电台搜索，采集所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值。在本实施例中，所述第二种调试模式是指将调频芯片与第一阻抗匹配电路之间断开的模式。判断所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值是否位于频点接收信号强度标准范围内，若是，则判定所述第一阻抗匹配电路与第二阻抗匹配电路都存在传导干扰，断开所述第一阻抗匹配电路和第二阻抗匹配电路中接地电路元件，在本实施例中，如图1所示，即断开第一阻抗匹配电路中电感L2和电容C3和断开所述第二阻抗电路中电感L1和电容C2；若否，则继续判断所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值是否符合预制判断标准，若是，则判定所述传导干扰来自所述第一阻抗匹配电路、第二阻抗匹配电路以及调频芯片，断开第一阻抗匹配电路第二阻抗匹配电路连接到地的器件，即断开第一阻抗匹配电路中电感L2和电容C3和断开所述第二阻抗电路中电感L1和电容C2，并检测所述调频芯片中芯片电路，例如，检测调频芯片的电源，和重要信号的走线；若否，判定所述传导干扰来自第二阻抗匹配电路与调频芯片，断开第二匹配电路连接到地的器件，及断开所述第二阻抗电路中电感L1和电容C2，并检测所述调频芯片中芯片电路，例如，检测调频芯片的电源，和重要信号的走线。在判定所述传导干扰来自所述第一阻抗匹配电路和调频芯片时，所述调控模块44用于：
在判定所述传导干扰来自所述第一阻抗匹配电路和调频芯片时，令所述电子设备从第一种调试模式切换至所述第二种调试模式，调用所述接收信号强度值采集模块41，在整个调频频段内进行电台搜索，采集所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值。判断所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号 强度值是否位于频点接收信号强度标准范围内，若是，则执行步骤S55，判定所述传导干扰只来自所述第一阻抗匹配电路，断开所述第一阻抗匹配电路中接地电路元件，即断开所述第二阻抗电路中电感L1和电容C2；若否，继续判断所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值是否符合预制判断标准，若是，则判定所述传导干扰来自第一阻抗匹配电路存在干扰，及调频芯片，断开第一阻抗匹配电路中接地电路元件，即断开第一阻抗匹配电路中电感L2和电容C3，并检测所述调频芯片中芯片电路，例如，检测调频芯片的电源，和重要信号的走线；若否，则判定所述传导干扰只来自所述调频芯片，检测所述调频芯片中芯片电路，例如，检测调频芯片的电源，和重要信号的走线。
本实施例所述的调频信号的传导干扰调试系统应用在电子设备中通过采集FM的RSSI值配合FM信号线的匹配通断来确定传导干扰的来源，对电子设备的FM性能进行了优化，为FM传导干扰的调试提供了整改方向。
实施例三
本实施例提供一种电子设备5，请参阅图5，显示为电子设备的原理结构示意图。如图5所示，所述电子设备5包括拔插式调频天线51,、调频芯片52、匹配电路53、及调频信号的传导干扰调试系统54。
与所述拔插式调频天线51匹配的调频芯片52用于电台搜索。其中，所述调频天线通过所述匹配电路53与所述调频芯片连接；及
与所述调频芯片52和匹配电路53连接的所述调频信号的传导干扰调试系统54，用于采集所述电子设备处于多种控制模式下整个调频频段内每一频点的接收信号强度值，根据所述电子设备处于多种控制模式下整个调频频段内每一频点的接收信号强度值判断所述电子设备是否存在传导干扰，若否，则查找传导干扰源，根据传导干扰源执行与传导干扰源相匹配的调试操作；若是，则无需执行调试操作。所述调频信号的传导干扰调试系统54具有所述实施例二中描述的调频信号的传导干扰调试系统的所有功能。
综上所述，本发明所述的调频信号的传导干扰调试方法及系统应用在电子设备中，通过采集FM的RSSI值配合FM信号线的匹配通断来确定传导干扰的来源，对电子设备的FM性能进行了优化，为FM传导干扰的调试提供了整改方向。所以，本发明有效克服了现有技术中的种种缺点而具高度产业利用价值。
上述实施例仅例示性说明本发明的原理及其功效，而非用于限制本发明。任何熟悉此技术的人士皆可在不违背本发明的精神及范畴下，对上述实施例进行修饰或改变。因此，举凡所属技术领域中具有通常知识者在未脱离本发明所揭示的精神与技术思想下所完成的一切等 效修饰或改变，仍应由本发明的权利要求所涵盖。

Claims (10)

  1. 一种调频信号的传导干扰调试方法，应用于电子设备，所述调频信号通过调频天线经过一阻抗匹配电路到达所述电子设备的调频芯片，所述阻抗匹配电路包括与所述调频芯片连接的第一阻抗匹配电路和与所述第一阻抗匹配电路连接的第二阻抗匹配电路，其特征在于，所述调频信号的传导干扰调试方法包括以下步骤：
    在所述调频天线处于断开模式时，在整个调频频段内进行电台搜索，采集所述调频天线处于断开模式时整个调频频段内每一频点的接收信号强度值；
    判断所述采集到的每一频点的接收信号强度值是否位于频点接收信号强度标准范围内，若否，则指示存在传导干扰，并转入下一步骤；若是，则指示不存在传导干扰，返回上一步骤继续采集所述调频天线处于断开模式时整个调频频段内每一频点的接收信号强度值；
    查找传导干扰源，根据传导干扰源执行与传导干扰源相匹配的调试操作。
  2. 根据权利要求1所述的调频信号的传导干扰调试方法，其特征在于：所述查找传导干扰源的步骤包括：
    令所述电子设备处于第一种调试模式，在整个调频频段内进行电台搜索，采集所述电子设备处于第一种调试模式时整个调频频段内每一频点的接收信号强度值；
    判断所述电子设备处于第一种调试模式时整个调频频段内每一频点的接收信号强度值是否位于频点接收信号强度标准范围内，若是，则判定所述传导干扰来自所述第二阻抗匹配电路，断开所述第二阻抗匹配电路中接地电路元件；若否，继续下一步骤；
    判断所述电子设备处于第一种调试模式时整个调频频段内每一频点的接收信号强度值是否符合预制判断标准，若是，则判定所述传导干扰来自第二阻抗匹配电路第一阻抗匹配电路和调频芯片，继续查找传导干扰源；断开所述第一阻抗匹配电路和第二阻抗匹配电路中接地电路元件，及检测所述调频芯片的电路；若否，则判定所述传导干扰来自所述第一阻抗匹配电路和调频芯片，继续查找传导干扰源。
  3. 根据权利要求2所述的调频信号的传导干扰调试方法，其特征在于：所述调频信号的传导干扰调试方法还包括：
    在判定所述传导干扰来自第二阻抗匹配电路，第一阻抗匹配电路与调频芯片时，令所述电子设备从第一种调试模式切换至所述第二种调试模式，在整个调频频段内进行电台搜 索，采集所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值；
    判断所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值是否位于频点接收信号强度标准范围内，若是，则判定所述传导干扰来自所述第二阻抗匹配电路和第一阻抗匹配电路，断开所述第一阻抗匹配电路和第二阻抗匹配电路中接地电路元件；若否，继续下一步骤；
    判断所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值是否符合预制判断标准，若是，则判定所述传导干扰来自所述第二阻抗匹配电路，第一阻抗匹配电路及调频芯片，断开所述第一阻抗匹配电路和第二阻抗匹配电路中接地电路元件，及检测所述调频芯片的电路；若否，则判定所述传导干扰来自所述第二阻抗匹配电路和调频芯片，断开所述第二阻抗匹配电路中接地电路元件，及检测所述调频芯片的电路。
  4. 根据权利要求2所述的调频信号的传导干扰调试方法，其特征在于：所述调频信号的传导干扰调试方法还包括：：
    在判定所述传导干扰来自第一阻抗匹配电路和调频芯片时，令所述电子设备从所述第一种调试模式切换至第二种调试模式，在整个调频频段内进行电台搜索，采集所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值；
    判断所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值是否位于频点接收信号强度标准范围内，若是，则判定所述传导干扰来自所述第一阻抗匹配电路，断开所述第一阻抗匹配电路中接地电路元件；若否，则继续下一步骤；
    判断所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值是否符合预制判断标准，若是，则判定所述传导干扰来自所述第一阻抗匹配电路，断开所述第一阻抗匹配电路中接地电路元件；若否，判定所述传导干扰来自所述调频芯片，检测所述调频芯片的电路。
  5. 根据权利要求1所述的调频信号的传导干扰调试方法，其特征在于：所述频点接收信号强度标准范围为频点接收信号强度标准值至频点接收信号强度标准值+误差阈值，所述频点接收信号强度标准值等于－114dbm。
  6. 一种调频信号的传导干扰调试系统，应用于电子设备，所述调频信号通过调频天线经过一阻抗匹配电路到达所述电子设备的调频芯片，所述阻抗匹配电路包括与所述调频芯片连接的第一阻抗匹配电路和与所述第一阻抗匹配电路连接的第二阻抗匹配电路，其特征在于，所述调频信号的传导干扰调试系统包括：
    接收信号强度值采集模块，用于在所述调频天线处于断开模式时，在整个调频频段内进行电台搜索，采集所述调频天线处于断开模式时整个调频频段内每一频点的接收信号强度值；
    与所述接收信号强度值采集模块连接的检测模块，用于判断所述采集到的每一频点的接收信号强度值是否位于频点接收信号强度标准范围内，若否，则调用用于指示存在传导干扰的指示模块；若是，则调用所述指示模块用于指示不存在传导干扰，和所述接收信号强度值采集模块继续采集所述调频天线处于断开模式时整个调频频段内每一频点的接收信号强度值；及
    与所述接收信号强度值采集模块和指示模块连接的调控模块用于查找传导干扰源，根据传导干扰源执行与传导干扰源相匹配的调试操作。
  7. 根据权利要求6所述的调频信号的传导干扰调试系统，其特征在于：所述调控模块用于令所述电子设备处于第一种调试模式，调用所述接收信号强度值采集模块，在整个调频频段内进行电台搜索，采集所述电子设备处于第一种调试模式时整个调频频段内每一频点的接收信号强度值；判断所述电子设备处于第一种调试模式时整个调频频段内每一频点的接收信号强度值是否位于频点接收信号强度标准范围内，若是，则判定所述传导干扰来自第二阻抗匹配电路第一阻抗匹配电路和调频芯片，继续查找传导干扰源；断开所述第一阻抗匹配电路和第二阻抗匹配电路中接地电路元件，及检测所述调频芯片的电路；若否，则判定所述传导干扰来自所述第一阻抗匹配电路和调频芯片，继续查找传导干扰源。
  8. 根据权利要求7所述的调频信号的传导干扰调试系统，其特征在于：所述调控模块还用于在判定所述传导干扰来自第二阻抗匹配电路，第一阻抗匹配电路与调频芯片时，令所述电子设备从第一种调试模式切换至所述第二种调试模式，在整个调频频段内进行电台搜索，采集所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值；
    判断所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值是否位于频点接收信号强度标准范围内，若是，则判定所述传导干扰来自所述第二阻抗匹配电路和第一阻抗匹配电路，断开所述第一阻抗匹配电路和第二阻抗匹配电路中接地电路元件；若否，继续判断所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值是否符合预制判断标准，若是，则判定所述传导干扰来自所述第二阻抗匹配电路，第一阻抗匹配电路及调频芯片，断开所述第一阻抗匹配电路和第二阻抗匹配电路中接地电路元件，及检测所述调频芯片的电路；若否，则判定所述传导干扰来自所述第二阻抗匹配电路和调频芯片，断开所述第二阻抗匹配电路中接地电路元件，及检测所述调频芯片的电路。
  9. 根据权利要求8所述的调频信号的传导干扰调试系统，其特征在于：所述调控模块还用于在判定所述传导干扰来自第一阻抗匹配电路和调频芯片，令所述电子设备从所述第一种调试模式切换至第二种调试模式，在整个调频频段内进行电台搜索，采集所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值；判断所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值是否位于频点接收信号强度标准范围内，若是，则判定所述传导干扰来自所述第一阻抗匹配电路，断开所述第一阻抗匹配电路中接地电路元件；若否，则继续判断所述电子设备处于第二种调试模式时整个调频频段内每一频点的接收信号强度值是否符合预制判断标准，若是，则判定所述传导干扰来自所述第一阻抗匹配电路，断开所述第一阻抗匹配电路中接地电路元件；若否，判定所述传导干扰来自所述调频芯片，检测所述调频芯片的电路。
  10. 一种电子设备，其特征在于，包括：
    拔插式调频天线；
    与所述拔插式调频天线匹配的调频芯片，用于电台搜索；其中，所述调频天线通过一匹配电路与所述调频芯片连接；及
    与所述调频芯片和匹配电路连接的，如权利要求6-9中任一所述的调频信号的传导干扰调试系统，用于采集所述电子设备处于多种控制模式下整个调频频段内每一频点的接收信号强度值，根据所述电子设备处于多种控制模式下整个调频频段内每一频点的接收信号强度值判断所述电子设备是否存在传导干扰，若否，则查找传导干扰源，根据传导干扰源执行与传导干扰源相匹配的调试操作；若是，则无需执行调试操作。
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