TR201820024A2 - SYSTEM AND METHOD FOR ADJUSTING ELECTROMAGNETIC COMPATIBILITY - Google Patents

Abstract

A system for adjusting the EMC of an electronic device (10), for example a television set, comprising a housing (12) and at least one electronic card (17, 18) arranged in this housing (12). ) and a sensor unit (22) for detecting electromagnetic interference radiation outside the housing (12). A control unit 20 evaluates the electromagnetic interference radiation detected by the sensor unit 22 and adapts the EMC characteristics of at least one electronic card 17, 18 based on the evaluation results.

Description

DESCRIPTION SYSTEM AND METHOD FOR ADJUSTING ELECTROMAGNETIC COMPATIBILITY Technical Area The current disclosure is for adjusting the electromagnetic compatibility of an electronic device. It is about a system and method.

Previous Technique Electromagnetic compatibility (EMC) is a very important element in electronic device 'manufacturing'.

Electronic cards generally vary in the kilohertz (kHz) to various gigahertz (GHz) range. There are many different signals with different frequencies. Traditionally, electronic configuration and software of electronic boards of devices and their isolation, related It is modified to meet EMC standards. However, many due to different end-user condition and installation, the 'manufacturer's side to meet the relevant EMC criteria Check and maintain all possible end-user requirements for electronic devices in order to meet it is very difficult to modify; not even possible.

Short Description According to the first aspect described herein, a housing and electromagnetic compatibility of an electronic device containing at least one electronic card A system for adjustment is provided and the enclosure of the relevant electronic device A device configured to detect electromagnetic interference radiation other than the sensor unit and at least one electronic board and sensor unit of the relevant electronic device. electromagnetic interference detected by the connected sensor unit at least one session to evaluate the radiation a device configured to adapt the electromagnetic compatibility characteristics of the electronic board. a sensor unit for detecting electromagnetic interference (EMI) radiation, and to evaluate the detected EMI radiation and on the basis of the evaluation results adapting the electromagnetic compatibility (EMC) characteristics of at least one electronic board. The system, which includes a control unit for automatically identify the EMC of a relevant electronic device for its conditions or installations. presents a concept of adjustment. In other words, the system mentioned is electronic. If the environment of the device changes, the electronic card(s) dynamically changes to a new condition. and adapt the EMC performance of the electronic device for new installation. can develop dynamically.

The system for adjusting the EMC of an electronic device complies with an EMC standard. at least one electronics, especially motherboards and power boards, that must meet It can be used for all electronic devices containing the card. The aforementioned system in consumer electronics (television sets, etc.) and household appliances (refrigerators, freezers, washing machines, dryers, dishwashers, cookers, etc.) can be used.

Said control unit may be, for example, a main processor of the electronic device. Least arranging an electronic board in or near an enclosure In case of case the sensor unit is preferably in the same housing part, preferably a part of the electronic device. It is mounted on the rear housing section.

In an example of the first aspect, said control unit is detected by the sensor unit. It is configured to distinguish between frequency and signal levels of EMI radiation.

Preferably, said control unit identifies the source of detected EMI radiation frequencies. is configured to define it (for example, motherboard or power board).

In another example of the first aspect, the control unit uses frequency for at least one electronic card. change, reduce signal levels and/or enable spread spectrum mode It is configured to perform at least one operation selected from among

In another example of the first direction, an electronic board equipped with an EMC filter In the case of an electronic device, the control unit will monitor the effects of the EMC filter in question. It is also configured to adapt.

According to the second aspect described herein, a housing and its arrangement within said housing electromagnetic compatibility of an electronic device containing at least one electronic card A method for adjusting is provided and the enclosure of the relevant electronic device detecting electromagnetic interference radiation other than; related electronic device detected by a control unit connected to at least one electronic card. evaluation of electromagnetic interference radiation; and evaluation results electromagnetic compatibility of at least one electronic board by the control unit on the basis of includes automatic adaptation of features.

In a second direction sample, the evaluation process is based on the frequency of the detected EMI radiation. and distinguishing signal levels.

In an example of the second aspect, the adaptation process is based on the EMC associated with the relevant electronic device. It includes controlling the signal levels of frequencies.

In another example of the second aspect, the adaptation process is performed for at least one electronic card, frequency change, reduce signal levels and/or enable spread spectrum mode includes at least one operation selected from among An EMC of at least one electronic board If equipped with a filter, the retrofitting process is preferably based on the mentioned EMC filter. includes adapting its effects.

Brief Description of Figures To help understand the current explanation and how to apply the applications Reference is made to the attached figures by way of example to show that it can be put Figure 1 is an example of a system for adjusting EMC according to the current description. shows the configuration of the electronic device schematically; and Figure 2 is an example flow of a system for adjusting EMCl according to the present description. shows the semain schematically.

Detailed Description Figures 1 and 2 are for setting up EMC and EMC according to an example of the current description. an electronic device comprising a system for performing a method for adjusting shows an example implementation of the device. Electronics mentioned in this application Although the device is a television set, the present description is not limited to this application. This electronic device e.g. alternatively a display screen or panel, PVR (DVR personal Video recorder, also known as digital Video recorder), DVD player, Blu Ray player, set-top box, desktop computer or laptop or tablet computer, etc., video game console, a cellular phone (including what's called a "smart phone") including), media player, printer; washing machine, tumble dryer, combined washing machine and tumble dryer, dishwasher, refrigerator or freezer or or a cooling apparatus such as a combined refrigerator-freezer, etc. such as a "white goods" power tool etc. can happen.

The television set (10) has a machine housing (12). This enclosure (12) is accessible to the user. In the front facing section (bottom of Figure 1), inside said enclosure (12), there is a the display unit (14) is arranged. In the rear section of the enclosure (12) (Fig. upper side), a driving circuit (16) is arranged inside this housing (12). This The driving circuit (16) is a power supply to supply electrical power to the display unit (14). a motherboard (18) to drive the board (17) and said display unit (14). contains. The power board (17) and the main board (18) are electronic in the context of the current description. are cards.

The driving circuit (16) is preferably an EMC to protect said driving circuit (16). Also equipped with insulation (not shown).

In addition, the television set (10) includes a control unit to control the driving circuit (16). (20) include. Said control unit (20) is for example the main unit of the television set (10). can be an operator.

The television set (10) has a device to adjust the EMC according to the relevant end-user conditions. includes the system. This system consists of the above-mentioned control unit (20) and a sensor. contains the unit (22). Said sensor unit (22) is part of the television set (10) outside the enclosure (12), especially in the same enclosure section as the drive circuit (16) is organized. This sensor unit (22) is located inside the housing (12) of the television set (10). EMI radiation outside, especially the power board (17) and main board of the drive circuit (16). To detect the EM1 radiation generated by (18) inside the enclosure (12) is being configured. The sensor unit 22 is used as a near field sensor block. can be created. Said sensor unit (22) in particular relates to the relevant EMC standard. It controls all frequencies.

The control unit (20) connects the sensor unit (22) to this sensor unit to receive the measurement signals. (22) (wired or wireless) is connected. Control unit (20) said sensor unit (22) to evaluate the EMI radiation signals detected by is being configured. This evaluation process is particularly concerned with the detection of EMI radiation. frequencies and signal levels, EMI radiation (i.e. motherboard (18) or by the power board (17)) and the corresponding EMC It includes deciding whether there is a problem with the standard.

In addition, the control unit 20 requires the drive circuit 16, in particular the control of this drive circuit. Depending on the results of the evaluation process, the EMC characteristics of the (16) motherboard (18) is made to adapt. EMC characteristics e.g. a frequency at a different frequency, signal levels are reduced, for example, by reducing the frequency gain. and/or providing spread spectrum mode for said motherboard (16) can be adapted through

The drive circuit (16) is optionally controlled by this drive circuit (16), in particular the drive circuit. EMI radiation generated by the electronic boards (17, 18) and lines of the circuit It can also be equipped with an EMC filter (19) for filtering. The mentioned EMC filter (19) may be a passive EMC filter or an active EMC filter. Preferably, EMC The EMI filtering properties of the filter (19) can be adjusted by the control unit (20) or can be adapted. In this example, the control unit 20 is preferably the EMC of the driving circuit 16. 'to adapt the effects of the EMC filter to adapt the characteristics of is being configured.

Figure 2 shows the EMC of the television set (10) using the configuration described above. schematically illustrates the corresponding method for adjustment. (Determined by. After that, detected EMI radiation is detected by said control unit (S12) is being evaluated. EMI detected in this evaluation process (S12), (S12a) distinguishing the frequencies and signal levels of the radiation and the corresponding EMC in (S12b) It includes deciding whether there is a problem with the standard.

In the absence of an EMC problem (NO in (S12b)) the process continues with the determination in (S10). is doing. However, if the control unit (20) if it determines that there is an EMC problem in its current configuration and software ((S12b) adapts the EMC characteristics of the board (16) and, if present, the EMC of the driving circuit. filter (19) in the way described above, in other words, changing frequencies, signal levels and/or providing a spread spectrum mode for the motherboard (18) and/or by adapting the effects of said EMC filter (19) or is adapted. Thus, the system television set (1D), especially the driver here controls the EMC performance of the circuit (16) and adapts the overall performance. as developing. For example, sometimes the power board (17) and the main board (18) are both on the same frequency. generates signals. In this case, the control unit 20 is for example. EMC performance will either change the frequency, provide spread spectrum or the motherboard It will lower the signal level on the side. Signal level still too high for this frequency said controller (20) controls specific frequency blocks. and can close this blog if the active source does not use this blog.

The examples described herein serve as illustrative examples of embodiments of the invention. is to be understood. Other applications and examples are envisaged. any sample or any feature defined in relation to the application alone or other features Can be used in combination with Also, any example or application any of the features described in relation to it are furthermore examples or applications of one or in combination with more features, or in other examples or applications Can be used in any combination. Also, equivalents not described here and modifications may also fall within the scope of the invention as set forth in the claims.

Claims (10)

REQUESTS 1. A system for adjusting the electromagnetic compatibility of an electronic device (10) comprising a housing (12) and at least one electronic card (17, 18) disposed in said housing (12), wherein the relevant electronic device (10) a sensor unit (22) configured to detect electromagnetic interference radiation outside its housing (12); and to evaluate the electromagnetic interference radiation connected to said at least one electronic board (17, 18) and said sensor unit (22) of the related electronic device (10) and detected by said sensor unit (22) and based on the evaluation results. The subject matter comprises a control unit (20) configured to adapt the electromagnetic compatibility characteristics of at least one electronic board (17, 18). The system according to claim 1, wherein said at least one electronic board (17, 18) comprises a main board (18) and a power board (17). The system of claim 1 or claim 2, wherein said control unit (20) is configured to distinguish between frequency and signal levels of electromagnetic interference radiation detected by said sensor unit (22). 4. System according to any one of claims 1 to 3, wherein said control unit (20) is for said at least one electronic board (17, 18) between changing frequency, lowering signal levels and/or providing spread spectrum mode. configured to perform at least one selected operation. The system according to any one of claims 1 to 47, wherein said at least one electronic board (17, 18) of the relevant electronic device (10) is equipped with an EMC filter (19) and said control unit (20) said EMC It is configured to adapt the effects of the filter (19). 6. A method for adjusting the electromagnetic compatibility of an electronic device (10) comprising a housing (12) and at least one electronic card (17, 18) disposed in said housing (12), wherein said electronic Device (10) detecting (810) electromagnetic interference radiation outside its enclosure (12); evaluating (812) electromagnetic interference radiation detected by a control unit (20) connected to said at least one electronic board (17, 18) of the relevant electronic device (10); and automatic adaptation (S14) of the electromagnetic compatibility properties of said at least one electronic card (17, 18) by said control unit (20) based on the evaluation results. 7. The method of claim 6, wherein the evaluation process (S12) includes distinguishing (S12a) the frequency and signal levels of the detected electromagnetic interference radiation. The method according to claim 6 or claim 7, wherein the adaptation process (S14) includes controlling (S12b) the signal levels of the frequencies that are the EMC associated with the relevant electronic device (10). The method according to any one of claims 6 to 8, wherein the adaptation process (S14) is selected from changing the frequency, reducing the signal levels and/or providing the spread spectrum mode for said at least one electronic board (17, 18). includes at least one operation. Method according to any one of claims 6 to 9, wherein said at least one electronic board (17, 18) is equipped with an EMC filter (19) and the adaptation process (S14) enables adaptation of the effects of said EMC filter (19). contains.