CN104639234A - Method and device for evaluating infrared light interference intensity - Google Patents
Method and device for evaluating infrared light interference intensity Download PDFInfo
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- CN104639234A CN104639234A CN201310549589.6A CN201310549589A CN104639234A CN 104639234 A CN104639234 A CN 104639234A CN 201310549589 A CN201310549589 A CN 201310549589A CN 104639234 A CN104639234 A CN 104639234A
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Abstract
The invention provides a method for evaluating infrared light interference intensity, which comprises the following steps: s1, the infrared sensing device collects all infrared light signals in the environment where the infrared sensing device is located, converts the infrared light signals into electric pulse signals according to the parameters of the infrared remote control system, and sends the electric pulse signals to the MCU processor; s2, the MCU processor judges the level height of the electric pulse signal sent by the infrared sensing device, compares the level height of the electric pulse signal with a preset level height, if the level height of the electric pulse signal is lower than the preset level height, the electric pulse signal is judged to be an interference pulse, and the step S3 is executed, otherwise, the electric pulse signal is not processed as a normal signal; and S3, calculating the length of the interference pulse, calculating the interference times according to the length of the interference pulse, and displaying the interference times. It also relates to a device. The method and the device for evaluating the infrared light interference strength perform quantitative test on the infrared light interference strength, have wide application range and provide basis for solving various problems in infrared remote control communication.
Description
Technical field
The present invention relates to infrared detection field, particularly relate to a kind of method and the device of assessing infrared light interference strength.
Background technology
Current infrared light communication applications widely, the household electrical appliances such as air-conditioning, TV all there is use infrared remote control system, its principle is exactly that remote controller sends several ms to hundreds of ms length infrared light, the receiving system of air-conditioning, television internal carries out filtering, decoding, analysis, execution to signal after receiving infrared light, achieves the far distance controlled to air-conditioning, TV like this.These infrared remote control systems are often subject to the interference of other infrared sources in actual use, and as sunlight, electronic energy-saving lamp, infrared monitoring alarm etc., once infrared remote control system is interfered, household appliances will cannot operate completely.After-sale service personnel often adopt when keeping in repair the method changing corresponding parts, fundamentally cannot solve interference problem.
Summary of the invention
In view of the present situation of prior art, the object of the present invention is to provide a kind of method and the device of assessing infrared light interference strength, quantification test is carried out to the intensity of infrared light interference.For achieving the above object, technical scheme of the present invention is as follows:
Assess a method for infrared light interference strength, comprise the steps:
S1, infrared sensing device gather its all infrared signals in the environment, the parameter according to infrared remote control system converts described infrared signal to electric impulse signal, and described electric impulse signal is sent to MCU processor;
S2, MCU processor judges the level height of the electric impulse signal that infrared sensing device sends over, the level height of electric impulse signal and predetermined level height are compared, if the level height of electric impulse signal is lower than predetermined level height, then be judged as disturbing pulse, enter step S3, otherwise, do not deal with as normal signal;
S3, calculates the length of described disturbing pulse, calculates interference number of times according to the length gauge of described disturbing pulse, and shows described interference number of times.
More preferably, in step s3:
Interference times N=disturbing pulse length/10ms, wherein, the unit of disturbing pulse length is ms, N round numbers, and the fractional part of not enough integer is by integer calculations.
More preferably, in step S3:
Showing described interference number of times adopts two digits to represent, numerical value is from 00 to 99, and numerical value is lower, and interference strength is lower, otherwise interference is stronger.
More preferably, show when described numerical value is 00 and represent noiseless, infrared remote control system can normally work;
The scope showing described numerical value, when 01-05, indicates slight interference, and infrared remote control system occasional is malfunctioning, and receiving system is no reaction once in a while;
Show the scope of described numerical value when 06-50, represent that interference is comparatively large, infrared remote control system often can be malfunctioning, and receiving system is difficult to receive correct signal;
Show the scope of described numerical value when 51-99, represent that interference is very large, infrared remote control system is completely malfunctioning, and receiving system is no reaction completely.
More preferably, described parameter comprises frequency and/or the pulse of infrared remote control system use.
More preferably, the height of described predetermined level is 4.5V.
Also relate to a kind of device assessing infrared light interference strength, described device adopts the method for the assessment infrared light interference strength of above-mentioned arbitrary technical scheme, and described device comprises infrared sensing device, MCU processor and display unit;
Described MCU processor is electrically connected with described infrared sensing device and described display unit respectively, and described MCU processor calculates interference number of times according to the infrared signal that described infrared sensing device gathers and is sent to described display unit and shows described interference number of times.
More preferably, described MCU processor comprises master chip, crystal oscillating circuit, reset circuit, display driver circuit and infrared sensing receiving circuit, and described master chip is electrically connected with described crystal oscillating circuit, reset circuit, display driver circuit and infrared sensing receiving circuit respectively.
More preferably, the model of described master chip is Atemga16L-8PU.
More preferably, described display unit is charactron.
More preferably, described MCU processor also comprises the power supply rectification filter circuit for powering to described master chip.
The invention has the beneficial effects as follows:
The method of assessment infrared light interference strength of the present invention and device, carry out quantification test to the intensity of infrared light interference, it is applied widely, provides foundation for solving the various problems occurred in infrared transmission by remote control.
Accompanying drawing explanation
Fig. 1 is the block diagram of device one embodiment of assessment infrared light interference strength of the present invention;
The pin schematic diagram that Fig. 2 is master chip shown in Fig. 1;
Fig. 3 is the schematic diagram of the receiving circuit of infrared sensing 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 object of the present invention, technical scheme and advantage clearly understand, below in conjunction with drawings and Examples, the method for assessment infrared light interference strength of the present invention and device are further elaborated.Should be appreciated that specific embodiment described herein only for explaining the present invention, being not intended to limit the present invention.
Referring to figs. 1 through Fig. 7, device one embodiment of assessment infrared light interference strength of the present invention comprises infrared sensing device, MCU processor and display unit; MCU processor is electrically connected with infrared sensing device and display unit respectively, and MCU processor calculates interference number of times according to the infrared signal of infrared sensing device collection and is sent to display unit and shows described interference number of times.MCU processor is single-chip microcomputer, (Micro Controller Unit is called for short MCU, and Chinese is multipoint control unit), the preferred charactron of display unit.
MCU processor comprises master chip 100, crystal oscillating circuit 103, reset circuit 104, display driver circuit 105 and infrared sensing receiving circuit 101, and master chip 100 is electrically connected with crystal oscillating circuit 103, reset circuit 104, display driver circuit 105 and infrared sensing receiving circuit 101 respectively.The model of master chip 100 is Atemga16L-8PU, 1st to the 3rd pin of master chip 100 connects D1, D2 and D3 pin of the TD65783 chip of display driver circuit 105 respectively, TD65783 chip is for driving the negative electrode of charactron DS1 and charactron DS2, the anode of charactron DS1 and charactron DS2 is driven by chip ULN2003, the output of chip ULN2003 connects the anode of charactron DS1 and charactron DS2, and the input of chip ULN2003 connects the 34th to the 40th pin of master chip 100.
10th pin of master chip 100, the 30th pin and the 32nd pin are as power pins, and the 10th pin, the 30th pin and the 32nd pin serial connection power supply rectification filter circuit 102 are connected to external power.Wherein, the output voltage of power supply rectification filter circuit 102 is direct current 5V.
11st pin of master chip 100 and the 31st pin ground connection, the 12nd pin of master chip 100 is connected crystal oscillating circuit 103 with the 13rd pin, and crystal oscillating circuit 103 comprises crystal oscillator Y1, electric capacity CX1 and electric capacity CX2.
9th pin of master chip 100 connects reset circuit 104, and reset circuit 104 comprises resistance R4 and diode IN4148.
14th pin of master chip 100 is connected infrared sensing receiving circuit 101 with the 16th pin, the infrared signal that infrared sensing receiving circuit 101 receives for transmitting infrared sensing device, infrared sensing device is infrared sensor, and the infrared sensing device in Fig. 3 is infrared receiving terminal.
The device course of work of above-mentioned assessment infrared light interference strength comprises the steps:
S1, infrared sensing device gather its all infrared signals in the environment, parameter according to infrared remote control system converts described infrared signal to electric impulse signal, and described electric impulse signal is sent to MCU processor, namely electric impulse signal is sent to master chip 100 by infrared sensing receiving circuit 101 by infrared sensing device; Wherein, described parameter comprises frequency and/or the pulse of infrared remote control system use;
S2, MCU processor judges the level height of the electric impulse signal that infrared sensing device sends over, the level height of electric impulse signal and predetermined level height are compared, if the level height of electric impulse signal is lower than predetermined level height, then be judged as disturbing pulse, enter step S3, otherwise, do not deal with as normal signal; Wherein, the height of described predetermined level is 4.5V;
S3, calculates the length of described disturbing pulse, calculates interference number of times according to the length gauge of described disturbing pulse, and shows described interference number of times.
In step s3, interference times N=disturbing pulse length/10ms, wherein, the unit of disturbing pulse length is ms, N round numbers, and the fractional part of not enough integer is by integer calculations.Such as a pulse length is 34ms, although a just pulse, can be counted as 4 interference according to length gauge.Can calculate the intensity of infrared light interference according to above analysis and processing method, unit is secondary/second.Have a pulse signal in the such as second and length is less than 10ms, then interference strength is 1; If an interference length is 500ms, then interference strength is for being calculated as 50 (very strong), completely likely disturbs normal infrared remote-controlled signal.
In step S3, display unit 106 shows described interference number of times and adopts two digits to represent, numerical value is from 00 to 99, and numerical value is lower, and interference strength is lower, otherwise interference is stronger.Display unit 106 can adopt two numeral method, and charactron DS2 shows the numerical value on a position, and charactron DS1 shows the numerical value on ten.
Display unit 106 shows when described numerical value is 00 and represents noiseless, and infrared remote control system can normally work; The scope showing described numerical value, when 01-05, indicates slight interference, and infrared remote control system occasional is malfunctioning, and receiving system is no reaction once in a while; Show the scope of described numerical value when 06-50, represent that interference is comparatively large, infrared remote control system often can be malfunctioning, and receiving system is difficult to receive correct signal; Show the scope of described numerical value when 51-99, represent that interference is very large, infrared remote control system is completely malfunctioning, and receiving system is no reaction completely.
The method of the assessment infrared light interference strength more than implemented and device, after device powers on, infrared sensor gathers current all infrared signals in the environment automatically, characteristic according to infrared transmission by remote control converts infrared signal to electric impulse signal, the MCU master chip that device uses is Atemga16L-8PU, this chip carries out analytic statistics according to above-mentioned algorithm to the pulse signal that transducer is brought, and analysis result is outputted on charactron intuitively show, analysis result represents by two digits the number of times that current infrared light disturbs.Display data are the real-time testing result of environment, and user of service shows the infrared light interference strength of known present apparatus position according to numerical value.It is applied widely, provides foundation for solving the various problems occurred in infrared transmission by remote control.
The above embodiment only have expressed several execution mode of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these all belong to protection scope of the present invention.Therefore, the protection range of patent of the present invention should be as the criterion with claims.
Claims (11)
1. assess a method for infrared light interference strength, it is characterized in that, comprise the steps:
S1, infrared sensing device gather its all infrared signals in the environment, the parameter according to infrared remote control system converts described infrared signal to electric impulse signal, and described electric impulse signal is sent to MCU processor;
S2, MCU processor judges the level height of the electric impulse signal that infrared sensing device sends over, the level height of electric impulse signal and predetermined level height are compared, if the level height of electric impulse signal is lower than predetermined level height, then be judged as disturbing pulse, enter step S3, otherwise, do not deal with as normal signal;
S3, calculates the length of described disturbing pulse, calculates interference number of times according to the length gauge of described disturbing pulse, and shows described interference number of times.
2. the method for assessment infrared light interference strength according to claim 1, is characterized in that, in step s3:
Interference times N=disturbing pulse length/10ms, wherein, the unit of disturbing pulse length is ms, N round numbers, and the fractional part of not enough integer is by integer calculations.
3. the method for assessment infrared light interference strength according to claim 1, is characterized in that, in step S3:
Showing described interference number of times adopts two digits to represent, numerical value is from 00 to 99, and numerical value is lower, and interference strength is lower, otherwise interference is stronger.
4. the method for assessment infrared light interference strength according to claim 3, is characterized in that:
Show when described numerical value is 00 and represent noiseless, infrared remote control system can normally work;
The scope showing described numerical value, when 01-05, indicates slight interference, and infrared remote control system occasional is malfunctioning, and receiving system is no reaction once in a while;
Show the scope of described numerical value when 06-50, represent that interference is comparatively large, infrared remote control system often can be malfunctioning, and receiving system is difficult to receive correct signal;
Show the scope of described numerical value when 51-99, represent that interference is very large, infrared remote control system is completely malfunctioning, and receiving system is no reaction completely.
5. the method for the assessment infrared light interference strength according to any one of claim 1-4, is characterized in that:
Described parameter comprises frequency and/or the pulse of infrared remote control system use.
6. the method for the assessment infrared light interference strength according to any one of claim 1-4, is characterized in that,
The height of described predetermined level is 4.5V.
7. assess a device for infrared light interference strength, described device adopts the method for the assessment infrared light interference strength described in any one of claim 1-6, it is characterized in that:
Comprise infrared sensing device, MCU processor and display unit;
Described MCU processor is electrically connected with described infrared sensing device and described display unit respectively, and described MCU processor calculates interference number of times according to the infrared signal that described infrared sensing device gathers and is sent to described display unit and shows described interference number of times.
8. the device of assessment infrared light interference strength according to claim 7, is characterized in that:
Described MCU processor comprises master chip, crystal oscillating circuit, reset circuit, display driver circuit and infrared sensing receiving circuit, and described master chip is electrically connected with described crystal oscillating circuit, reset circuit, display driver circuit and infrared sensing receiving circuit respectively.
9. the device of assessment infrared light interference strength according to claim 8, is characterized in that:
The model of described master chip is Atemga16L-8PU.
10. the device of assessment infrared light interference strength according to claim 7, is characterized in that:
Described display unit is charactron.
The device of 11. assessment infrared light interference strengths according to claim 7, is characterized in that:
Described MCU processor also comprises the power supply rectification filter circuit for powering to described master chip.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310549589.6A CN104639234B (en) | 2013-11-07 | 2013-11-07 | Method and device for evaluating infrared light interference intensity |
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| CN201310549589.6A CN104639234B (en) | 2013-11-07 | 2013-11-07 | Method and device for evaluating infrared light interference intensity |
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| CN104639234A true CN104639234A (en) | 2015-05-20 |
| CN104639234B CN104639234B (en) | 2018-01-19 |
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| 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 |
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2013
- 2013-11-07 CN CN201310549589.6A patent/CN104639234B/en not_active Expired - Fee Related
Patent Citations (7)
| 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 |
| US20110226953A1 (en) * | 2008-09-25 | 2011-09-22 | Kabushiki Kaisha Toshiba | Solid-state imaging element |
| 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 |
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