CN104639234B - Assess the method and device of infrared light interference strength - Google Patents

Assess the method and device of infrared light interference strength Download PDF

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Publication number
CN104639234B
CN104639234B CN201310549589.6A CN201310549589A CN104639234B CN 104639234 B CN104639234 B CN 104639234B CN 201310549589 A CN201310549589 A CN 201310549589A CN 104639234 B CN104639234 B CN 104639234B
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China
Prior art keywords
infrared
infrared light
interference strength
light interference
interference
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CN201310549589.6A
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Chinese (zh)
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CN104639234A (en
Inventor
冯勇雄
方祥建
欧毓迎
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珠海格力电器股份有限公司
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Publication of CN104639234A publication Critical patent/CN104639234A/en
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Abstract

The present invention provides a kind of method for assessing infrared light interference strength, comprises the following steps:S1, infrared sensing device gather its all infrared signals in the environment, infrared signal is converted into by electric impulse signal according to the parameter of infrared remote control system, and electric impulse signal is sent to MCU processors;S2, MCU processors judge the level height for the electric impulse signal that infrared sensing device sends over, by the level of electric impulse signal height and predetermined level highly compared with, if the level of electric impulse signal is highly less than predetermined level height, then it is judged as disturbing pulse, into step S3, otherwise, do not dealt with as normal signal;S3, the length of disturbing pulse is calculated, interference number, and display interference number are calculated according to the length gauge of disturbing pulse.Further relate to a kind of device.The method and device of the assessment infrared light interference strength of the present invention, quantization test is carried out to the intensity of infrared light interference, its is applied widely, and foundation is provided to solve the various problems occurred in infrared transmission by remote control.

Description

Assess the method and device of infrared light interference strength

Technical field

The present invention relates to infrared detection field, more particularly to a kind of method and device for assessing infrared light interference strength.

Background technology

Infrared light communication applications are very extensive at present, have using infrared remote control system on the household electrical appliances such as air-conditioning, TV, its Principle is exactly that remote control sends several ms and receives infrared light to hundreds of ms length infrared lights, air-conditioning, the reception device of television internal Signal is filtered afterwards, decode, analyze, performed, has been achieved in that the far distance controlled to air-conditioning, TV.Actually make These infrared remote control systems are often disturbed by other infrared sources in, such as sunshine, electronic energy-saving lamp, infrared prison Alarm etc. is controlled, once infrared remote control system is interfered, household appliances can not will operate completely.After-sale service personnel are repairing When often using the method for changing corresponding parts, can not fundamentally solve interference problem.

The content of the invention

In view of the present situation of prior art, it is an object of the invention to provide a kind of method for assessing infrared light interference strength and Device, quantization test is carried out to the intensity of infrared light interference.To achieve the above object, technical scheme is as follows:

A kind of method for assessing infrared light interference strength, comprises the following steps:

S1, infrared sensing device gather its all infrared signals in the environment, according to the ginseng of infrared remote control system The infrared signal is converted into electric impulse signal by number, and the electric impulse signal is sent to MCU processors;

S2, MCU processor judge the level height for the electric impulse signal that infrared sensing device sends over, and electric pulse is believed Number level height with predetermined level highly compared with, if the level of electric impulse signal highly less than predetermined level highly, It is judged as disturbing pulse, into step S3, otherwise, is not dealt with as normal signal;

S3, the length of the disturbing pulse is calculated, interference number is calculated according to the length gauge of the disturbing pulse, and show The interference number.

More preferably, in step s3:

Times N=disturbing pulse length/10ms is disturbed, wherein, the unit of disturbing pulse length is ms, and N round numbers is insufficient The fractional part of integer presses integer calculations.

More preferably, in step S3:

Show that the interference number represents that for numerical value from 00 to 99, numerical value is lower, and interference strength is lower using two digits, Otherwise interference is stronger.

More preferably, show and represent noiseless when the numerical value is 00, infrared remote control system can normal work;

The scope of the numerical value is shown in 01-05, slight interference is indicated, infrared remote control system occasional failure, connects Receiving apparatus does not react once in a while;

The scope of the numerical value is shown in 06-50, represents that interference is larger, infrared remote control system often failure, receives Device is difficult to receive correct signal;

The scope of the numerical value is shown in 51-99, represents to disturb very big, the complete failure of infrared remote control system, receives Device does not react completely.

More preferably, the parameter includes frequency and/or the pulse that infrared remote control system uses.

More preferably, the height of the predetermined level is 4.5V.

A kind of device for assessing infrared light interference strength is further related to, described device uses the assessment of any of the above-described technical scheme The method of infrared light interference strength, described device include infrared sensing device, MCU processors and display device;

The MCU processors electrically connect with the infrared sensing device and the display device respectively, the MCU processors Interference number is calculated according to the infrared signal that the infrared sensing device gathers and is sent to described in the display device shows Disturb number.

More preferably, the MCU processors include master chip, crystal oscillating circuit, reset circuit, display driver circuit and infrared biography Feel receiving circuit, the master chip receives electricity with the crystal oscillating circuit, reset circuit, display driver circuit and infrared sensing respectively Road electrically connects.

More preferably, the model Atemga16L-8PU of the master chip.

More preferably, the display device is charactron.

More preferably, the MCU processors also include being used for the power supply rectification filter circuit powered to the master chip.

The beneficial effects of the invention are as follows:

The method and device of the assessment infrared light interference strength of the present invention, quantization survey is carried out to the intensity of infrared light interference Examination, its is applied widely, and foundation is provided to solve the various problems occurred in infrared transmission by remote control.

Brief description of the drawings

Fig. 1 is the block diagram of the embodiment of device one of the assessment infrared light interference strength of the present invention;

Fig. 2 is the pin schematic diagram of master chip shown in Fig. 1;

Fig. 3 is the schematic diagram of infrared sensing receiving circuit shown in Fig. 1;

Fig. 4 is the schematic diagram of power supply rectification filter circuit shown in Fig. 1;

Fig. 5 is the schematic diagram of crystal oscillating circuit shown in Fig. 1;

Fig. 6 is the schematic diagram of reset circuit shown in Fig. 1;

Fig. 7 is the schematic diagram of display driver circuit shown in Fig. 1.

Embodiment

In order to make the purpose , technical scheme and advantage of the present invention be clearer, below in conjunction with drawings and Examples pair The method and device of the assessment infrared light interference strength of the present invention is further elaborated.It is it should be appreciated that described herein Specific embodiment be only used for explain the present invention, be not intended to limit the present invention.

Referring to figs. 1 to Fig. 7, the embodiment of device one of assessment infrared light interference strength of the invention fills including infrared sensing Put, MCU processors and display device;MCU processors electrically connect with infrared sensing device and display device respectively, MCU processors The infrared signal gathered according to infrared sensing device, which calculates interference number and is sent to display device, shows the interference number. MCU processors are single-chip microcomputer,(Micro Controller Unit abbreviation MCU, Chinese is multipoint control unit), display The preferred charactron of device.

MCU processors include master chip 100, crystal oscillating circuit 103, reset circuit 104, display driver circuit 105 and infrared Sense receiving circuit 101, master chip 100 respectively with crystal oscillating circuit 103, reset circuit 104, display driver circuit 105 and infrared Sensing receiving circuit 101 electrically connects.The model Atemga16L-8PU of master chip 100, the 1st to the 3rd pin of master chip 100 D1, D2 and D3 pin of the TD65783 chips of display driver circuit 105 are connected respectively, and TD65783 chips are used for drive digital tube DS1 and charactron DS2 negative electrode, charactron DS1 and charactron DS2 anode are driven by chip ULN2003, chip ULN2003 Output end connection charactron DS1 and charactron DS2 anode, chip ULN2003 input connection master chip 100 the 34th To the 40th pin.

The 10th pin, the 30th pin and the 32nd pin of master chip 100 are as power pins, the 10th pin, the 30th pin External power is connected to the 32nd pin serial connection power supply rectification filter circuit 102.Wherein, power supply rectification filter circuit 102 is defeated It is direct current 5V to go out voltage.

11st pin of master chip 100 and the 31st pin ground connection, the 12nd pin of master chip 100 and the connection of the 13rd pin are brilliant Shake circuit 103, and crystal oscillating circuit 103 includes crystal oscillator Y1, electric capacity CX1 and electric capacity CX2.

The 9th pin connection reset circuit 104 of master chip 100, reset circuit 104 include resistance R4 and diode IN4148。

14th pin of master chip 100 and the 16th pin connection infrared sensing receiving circuit 101, infrared sensing receiving circuit 101 are used for the infrared signals that transmit infrared sensing device reception, and infrared sensing device is infrared sensor, infrared in Fig. 3 Sensing device is infrared receiving terminal.

The device course of work of above-mentioned assessment infrared light interference strength comprises the following steps:

S1, infrared sensing device gather its all infrared signals in the environment, according to the ginseng of infrared remote control system The infrared signal is converted into electric impulse signal by number, and the electric impulse signal is sent to MCU processors, i.e., infrared biography Electric impulse signal is sent to master chip 100 by induction device by infrared sensing receiving circuit 101;Wherein, the parameter includes red The frequency and/or pulse that outer remote control system uses;

S2, MCU processor judge the level height for the electric impulse signal that infrared sensing device sends over, and electric pulse is believed Number level height with predetermined level highly compared with, if the level of electric impulse signal highly less than predetermined level highly, It is judged as disturbing pulse, into step S3, otherwise, is not dealt with as normal signal;Wherein, the height of the predetermined level is 4.5V;

S3, the length of the disturbing pulse is calculated, interference number is calculated according to the length gauge of the disturbing pulse, and show The interference number.

In step s3, times N=disturbing pulse length/10ms is disturbed, wherein, the unit of disturbing pulse length is ms, N Round numbers, the fractional part of insufficient integer press integer calculations.For example a pulse length is 34ms, although a simply pulse, It can be disturbed according to length computation into 4 times.The intensity of infrared light interference, unit can be calculated according to above analysis and processing method It is secondary/second.For example having a pulse signal in one second and length is less than 10ms, then interference strength is 1;An if interference length For 500ms, then interference strength is to be calculated as 50 (very strong), it is entirely possible to disturbs normal infrared remote-controlled signal.

In step S3, display device 106 shows that the interference number is represented using two digits, and numerical value is from 00 to 99, number Value is lower, and interference strength is lower, otherwise interference is stronger.Display device 106 can use two numeral methods, and charactron DS2 shows Show the numerical value on a position, charactron DS1 shows the numerical value on ten.

Display device 106 is shown represents noiseless when the numerical value is 00, and infrared remote control system can normal work;Display institute The scope of numerical value is stated in 01-05, indicates slight interference, infrared remote control system occasional failure, reception device does not have anti-once in a while Should;The scope of the numerical value is shown in 06-50, represents that interference is larger, infrared remote control system often failure, reception device is very Difficulty receives correct signal;The scope of the numerical value is shown in 51-99, represents that interference is very big, infrared remote control system is complete Full failure, reception device are not reacted completely.

More than the method and device of assessment infrared light interference strength implemented, on device after electricity, infrared sensor is adopted automatically Collection is currently located all infrared signals in environment, and infrared signal is converted into electric arteries and veins according to the characteristic of infrared transmission by remote control Signal is rushed, the MCU master chips that device uses are Atemga16L-8PU, and the chip is brought according to above-mentioned algorithm to sensor Pulse signal carries out analytic statistics, and analysis result is output on charactron and intuitively shown, analysis result is by two digits table Show the number of current infrared light interference.Display data is the real-time testing result of environment, and user of service shows according to numerical value to be understood to work as The infrared light interference strength of preceding device position.Its is applied widely, various is asked for solve to occur in infrared transmission by remote control Topic provides foundation.

Embodiment described above only expresses the several embodiments of the present invention, and its description is more specific and detailed, but simultaneously Therefore the limitation to the scope of the claims of the present invention can not be interpreted as.It should be pointed out that for one of ordinary skill in the art For, without departing from the inventive concept of the premise, various modifications and improvements can be made, these belong to the guarantor of the present invention Protect scope.Therefore, the protection domain of patent of the present invention should be determined by the appended claims.

Claims (11)

  1. A kind of 1. method for assessing infrared light interference strength, it is characterised in that comprise the following steps:
    S1, infrared sensing device gather its all infrared signals in the environment, will according to the parameter of infrared remote control system The infrared signal is converted into electric impulse signal, and the electric impulse signal is sent to MCU processors;
    S2, MCU processor judge the level height for the electric impulse signal that infrared sensing device sends over, by electric impulse signal Level height with predetermined level highly compared with, if the level of electric impulse signal highly less than predetermined level highly, judge For disturbing pulse, into step S3, otherwise, do not dealt with as normal signal;
    S3, the length of the disturbing pulse is calculated, interference number is calculated according to the length gauge of the disturbing pulse, and described in display Disturb number;
    In step S3:The numerical value of the interference number is lower, and interference strength is lower, otherwise interference is stronger.
  2. 2. the method according to claim 1 for assessing infrared light interference strength, it is characterised in that in step s3:
    Times N=disturbing pulse length/10ms is disturbed, wherein, the unit of disturbing pulse length is ms, N round numbers, insufficient integer Fractional part press integer calculations.
  3. 3. the method according to claim 1 for assessing infrared light interference strength, it is characterised in that in step S3:
    Show that the interference number represents that numerical value is from 00 to 99 using two digits.
  4. 4. the method according to claim 3 for assessing infrared light interference strength, it is characterised in that:
    Show and represent noiseless when the numerical value is 00, infrared remote control system can normal work;
    The scope of the numerical value is shown in 01-05, slight interference is indicated, infrared remote control system occasional failure, receives dress Put and do not react once in a while;
    The scope of the numerical value is shown in 06-50, represents that interference is larger, infrared remote control system often failure, reception device It is difficult to receive correct signal;
    The scope of the numerical value is shown in 51-99, represents to disturb very big, the complete failure of infrared remote control system, reception device Do not react completely.
  5. 5. the method for the assessment infrared light interference strength according to claim any one of 1-4, it is characterised in that:
    The parameter includes frequency and/or the pulse that infrared remote control system uses.
  6. 6. the method for the assessment infrared light interference strength according to claim any one of 1-4, it is characterised in that
    The height of the predetermined level is 4.5V.
  7. 7. a kind of device for assessing infrared light interference strength, described device are red using the assessment described in claim any one of 1-6 The method of outer smooth interference strength, it is characterised in that:
    Including infrared sensing device, MCU processors and display device;
    The MCU processors electrically connect with the infrared sensing device and the display device respectively, the MCU processors according to The infrared signal of the infrared sensing device collection, which calculates interference number and is sent to the display device, shows the interference Number.
  8. 8. the device according to claim 7 for assessing infrared light interference strength, it is characterised in that:
    The MCU processors include master chip, crystal oscillating circuit, reset circuit, display driver circuit and infrared sensing receiving circuit, The master chip electrically connects with the crystal oscillating circuit, reset circuit, display driver circuit and infrared sensing receiving circuit respectively.
  9. 9. the device according to claim 8 for assessing infrared light interference strength, it is characterised in that:
    The model Atemga16L-8PU of the master chip.
  10. 10. the device according to claim 8 for assessing infrared light interference strength, it is characterised in that:
    The MCU processors also include being used for the power supply rectification filter circuit powered to the master chip.
  11. 11. the device according to claim 7 for assessing infrared light interference strength, it is characterised in that:
    The display device is charactron.
CN201310549589.6A 2013-11-07 2013-11-07 Assess the method and device of infrared light interference strength CN104639234B (en)

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CN104639234B true CN104639234B (en) 2018-01-19

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Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101271163A (en) * 2008-04-11 2008-09-24 上海科勒电子科技有限公司 Infrared inductor and method thereof
CN102083119A (en) * 2009-11-30 2011-06-01 中国移动通信集团广东有限公司 Method and device for evaluating network coverage interference
CN102353395A (en) * 2011-06-26 2012-02-15 西安电子科技大学 Infrared proximity transducer capable of inhibiting environmental noise
CN102448127A (en) * 2010-09-30 2012-05-09 中国移动通信集团公司 Interference information processing method and device
CN202615543U (en) * 2012-05-07 2012-12-19 广州保得威尔电子科技有限公司 Fire alarm capable of far infrared detection for human body position
CN103002499A (en) * 2011-09-14 2013-03-27 鼎桥通信技术有限公司 Wireless resource allocation and optimization method and wireless communication system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP5543703B2 (en) * 2008-09-25 2014-07-09 株式会社東芝 Subject position detection element

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101271163A (en) * 2008-04-11 2008-09-24 上海科勒电子科技有限公司 Infrared inductor and method thereof
CN102083119A (en) * 2009-11-30 2011-06-01 中国移动通信集团广东有限公司 Method and device for evaluating network coverage interference
CN102448127A (en) * 2010-09-30 2012-05-09 中国移动通信集团公司 Interference information processing method and device
CN102353395A (en) * 2011-06-26 2012-02-15 西安电子科技大学 Infrared proximity transducer capable of inhibiting environmental noise
CN103002499A (en) * 2011-09-14 2013-03-27 鼎桥通信技术有限公司 Wireless resource allocation and optimization method and wireless communication system
CN202615543U (en) * 2012-05-07 2012-12-19 广州保得威尔电子科技有限公司 Fire alarm capable of far infrared detection for human body position

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