CN1198520A - Method for sensing object distance for air conditioner - Google Patents
Method for sensing object distance for air conditioner Download PDFInfo
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- CN1198520A CN1198520A CN 97113097 CN97113097A CN1198520A CN 1198520 A CN1198520 A CN 1198520A CN 97113097 CN97113097 CN 97113097 CN 97113097 A CN97113097 A CN 97113097A CN 1198520 A CN1198520 A CN 1198520A
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- sound wave
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- target range
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Abstract
A method for sensing an object distance by an air conditioner includes the steps of transmitting a sound wave to an object by the sound wave transmitter for a predetermined time, determining whether, after being reflected against the object, caculating an object distance by a time when the sound wave is reflected against the object and received to the sound wave receiver and finishing the routing of sensing the object distance, transmitting a sound wave for a longer time than the predetermined time by the sound wave transmitter, and calculating an object distance by a time when the sound wave of the bigger frequency is reflected against the object and is received by the sound wave receiver and finishing the routine of sensing the object distance.
Description
The present invention relates to air-conditioner, what relate in particular to is a kind of method that is used for the detection target range of air-conditioner, and the distance of a target is detected at the interval that promptly changes sonic sensor transmission sound wave.
Fig. 1 is a block diagram that shows the structure of common air-conditioning device, and it comprises: a micom10, can handle overall process, and Measuring Time plays the memory effect, input and output data signal, and the whole system of control air-conditioner; A sound transmitter 11, the sound wave that receives the interchange of the preset frequency that micom10 produces and send a preset frequency is to the room; An oscillator 12 is connected to drive sound transmitter 11 with sound transmitter 11; An acoustic receiver 13 receives reflected sound wave, discerns the environment of corresponding house interior; An amplifier 14, the reflective sound wave that acoustic receiver 13 is received is amplified to a preassigned; A sensor 15, the distance of the sonic detection target that receives according to acoustic receiver 13.
Operation sequence with air-conditioner of said structure is narrated with reference to Fig. 2.At first, sound transmitter 11 sends a sound wave (S101) in the corresponding room under the control of micom10.Then, determine whether acoustic receiver 13 has received the transmission sound wave (S102) of target reflected back.If after the intensity of acoustic wave that acoustic receiver 13 receives greater than predetermined strength, then went out the distance of target according to the Time Calculation that sends and receive, the program of object range detection just finished (S103).On the contrary, if acoustic receiver 13 does not receive any sound wave, then determine whether to have crossed preset time T (S104).If preset time T is mistake, just be defined as not detecting the distance of target, the program that then detects target range just is through with.On the contrary, if preset time T did not also have, then continue to determine whether acoustic receiver 13 has received the sound wave of intensity greater than predetermined strength.
Fig. 3 a and Fig. 3 b demonstrate the characteristic of the sonic sensor (sound transmitter and acoustic receiver) that detects target range.
Far in target from sonic sensor, or far at the locality of target from sonic sensor, be lower than predetermined strength by sound transmitter 11 generations and by the sound wave of target reflected back its intensity when being received by acoustic receiver 13.Therefore, sound wave can not be recorded.That is to say that target is near more from sound transmitter 11, the intensity of sound wave is big more, and the current potential that the sound wave that acoustic receiver 13 receives produces is high more.On the contrary, target is far away more from sonic sensor, and the intensity of acoustic wave that acoustic receiver 13 receives is low more.Therefore, target is near more from sonic sensor, and the intensity of acoustic wave that acoustic receiver 13 receives is high more, thereby target is near more from sonic sensor, and the scope of the detection angles of detection target range is wide more.In brief, the scope of target range and detection angles is inversely proportional to.
Above-mentioned conventional air conditioner exists some problems.Since when the target range sonic sensor is nearer, but detection angles wider range of detection distance, and sonic sensor has identified the distance of other target, rather than for preparing the distance of the target of detection distance.In addition, because detectable angular range broad must be restricted the orientation.
Therefore, the present invention proposes a kind of method that is used for the detection target range of air-conditioner, can be from limitation and the more caused problems of unfavorable factor that overcome above-mentioned technology in fact.
Other characteristics of the present invention and advantage will show in each several part narration subsequently, or see in practice of the present invention.The purpose of invention and other various advantages will realize according to the structure of described specification, claim and accompanying drawing introduction and finish.
According to purpose of the present invention, for realizing various advantages, briefly be described below: by the method for the air-conditioner detection target range with sound transmitter and receiver, this method comprises the steps.By a scheduled time sound wave is sent to target by sound transmitter, behind target reflected back sound wave, judge whether the sound wave that transmitter sends out is received by acoustic receiver, receive the distance of the Time Calculation target of sound wave, the program of detection of end target range according to target reflective sound wave and acoustic receiver; Send a sound wave by sound transmitter in the time longer, according to the sound wave of the big frequency of target reflected back and the distance of the Time Calculation target that acoustic receiver receives this sound wave, the program of detection of end target range than the scheduled time.
Though aforesaid general narration and being described in detail subsequently are typical, indicative, these narrations all are to be used for further specifying claimed the present invention.
Can easily understand various purpose of the present invention, characteristics and superiority with reference to just being described in detail of back in conjunction with the accompanying drawings:
Fig. 1 is the block diagram of a common air-conditioning device;
Fig. 2 is a conventional air conditioner detects target range with sonic sensor a flow chart;
Fig. 3 a has illustrated that the intensity of acoustic wave that receives in the common air-conditioning device depends on the distance of target and the direction of sonic sensor;
Fig. 3 b is a coordinate diagram, is presented at the angle and the distance of sonic sensor and the relation of direction that detect target range in the common air-conditioning device.
Fig. 4 is the flow chart that detects the method for target range in the air-conditioner of the present invention with sonic sensor;
Fig. 5 is a coordinate diagram, is presented at the angle and the distance of sonic sensor and the relation of direction that detect target range in the air-conditioner of the present invention.
Preferred embodiment of the present invention will be described in detail belows, object lesson is described in the accompanying drawings.
Fig. 4 is the flow chart that detects target range according to the present invention in the air-conditioner with sonic sensor.
At first, under the control of micom10, sound transmitter 11 sends a sound wave to corresponding house interior (S201).Determine then whether acoustic receiver 13 has received the sound wave (S202) greater than predetermined strength after the target reflected back sends sound wave.If acoustic receiver 13 has received the sound wave greater than predetermined strength, go out target range according to the Time Calculation that sends and receive, detect the EP (end of program) (S203) of target range.
Judging acoustic receiver 13 scheduled time T
1Whether receive in the process greater than the sound wave of predetermined strength, if surpass preset time T
1(S204), judge whether to have received sound wave once more, as preset time T
1, sound transmitter 11 sends a sound wave (S205) again.After this, whether judge the sound wave that sends, thereby received sound wave (S206) greater than predetermined strength within the predetermined time by the target reflected back.If acoustic receiver 13 has received the sound wave greater than predetermined strength,, detect the EP (end of program) of target range according to the distance of the Time Calculation target that sends and receive.Then, judge whether acoustic receiver 13 has received the sound wave (S207) greater than predetermined strength, then, if preset time T
2Also do not have, restarted the S206 step.On the contrary, if preset time T
2Cross, just be defined as not detecting target range, detect the EP (end of program) of target range.
Utilize sonic sensor to detect in the method for target range in air-conditioner, for detecting target range, the time that acoustic wave sends sound wave is variable.That is to say that if it is short to send the time of sound wave, angular range and the time of detecting target range are narrower comparatively speaking than long situation.
With reference to Fig. 5,, whether check at preset time T because in the first step that detects target range
1Received pulse of interior input comprises corresponding to the time T that sends and receive apart from detection range
1Distance D
1Therefore in second step, postponing a predetermined transmission and time of reception T
1After, check the transmission and the time of reception T that whether are being scheduled to
2In imported a received pulse, distance-detection range comprises corresponding to sending and time of reception T
2Distance D
2Thereby, the scope of object range detection angle is represented with solid line in Fig. 5, the sonic sensor of the air-conditioner of using from left to right thus or rotating from right to left carries out the measurement of target range on each direction, when the target range of not considering between target and the sonic sensor, the scope of object range detection angle narrows down, thereby has strengthened directed prejudgementing character.
Obviously, adopt the method for the air-conditioner detection target range among the present invention, those skilled in the art can carry out multiple improvement and variation under the situation that does not break away from essence of an invention and scope.Thereby if these improvement of invention and changing from claims and its equivalent, then they are just covered by the present invention.
Claims (3)
1. one kind is detected the method for target range by the air-conditioner with sound transmitter and receiver, and this method comprises the steps:
Send sound wave by a scheduled time to target by sound transmitter;
After determining that sound wave that sound transmitter sends is by the target reflected back, whether received by acoustic receiver;
Receive the distance of the Time Calculation target of sound wave and the program of detection of end target range according to target reflective sound wave and acoustic receiver;
Send a sound wave by sound transmitter in the time longer than the scheduled time;
Go out target range according to the sound wave of the big frequency of target reflected back and the Time Calculation that acoustic receiver receives this sound wave, and the program of detection of end target range.
2. method according to claim 1 also comprises the steps:
If the sound wave that sound transmitter sends is received by acoustic receiver, receive the Time Calculation target range of sound wave and the program of detection of end target range according to acoustic receiver.
3. method according to claim 1 also comprises the steps:
If acoustic receiver does not receive the sound wave of big frequency, just determine not detect any target, and the program of detection of end target range.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97113097 CN1133048C (en) | 1997-05-06 | 1997-05-06 | Method for sensing object distance for air conditioner |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97113097 CN1133048C (en) | 1997-05-06 | 1997-05-06 | Method for sensing object distance for air conditioner |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1198520A true CN1198520A (en) | 1998-11-11 |
| CN1133048C CN1133048C (en) | 2003-12-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97113097 Expired - Fee Related CN1133048C (en) | 1997-05-06 | 1997-05-06 | Method for sensing object distance for air conditioner |
Country Status (1)
| Country | Link |
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| CN (1) | CN1133048C (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104509129A (en) * | 2012-04-19 | 2015-04-08 | 索尼电脑娱乐公司 | Auto detection of headphone orientation |
| CN104728990A (en) * | 2013-12-19 | 2015-06-24 | 海尔集团公司 | Air-conditioner air supply speed control device and method and air conditioner |
| CN105588257A (en) * | 2014-11-27 | 2016-05-18 | 海信（山东）空调有限公司 | Control method of intelligent air conditioner and intelligent air conditioner |
| CN107525238A (en) * | 2017-08-22 | 2017-12-29 | 广东美的制冷设备有限公司 | Air-conditioner control method, infrared signal transceiver and air conditioner |
-
1997
- 1997-05-06 CN CN 97113097 patent/CN1133048C/en not_active Expired - Fee Related
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104509129A (en) * | 2012-04-19 | 2015-04-08 | 索尼电脑娱乐公司 | Auto detection of headphone orientation |
| CN104728990A (en) * | 2013-12-19 | 2015-06-24 | 海尔集团公司 | Air-conditioner air supply speed control device and method and air conditioner |
| CN105588257A (en) * | 2014-11-27 | 2016-05-18 | 海信（山东）空调有限公司 | Control method of intelligent air conditioner and intelligent air conditioner |
| CN105588257B (en) * | 2014-11-27 | 2018-09-25 | 海信（山东）空调有限公司 | A kind of intelligent air-conditioner control method and intelligent air condition |
| CN107525238A (en) * | 2017-08-22 | 2017-12-29 | 广东美的制冷设备有限公司 | Air-conditioner control method, infrared signal transceiver and air conditioner |
| CN107525238B (en) * | 2017-08-22 | 2020-09-11 | 广东美的制冷设备有限公司 | Air conditioner control method, infrared signal transceiver and air conditioner |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1133048C (en) | 2003-12-31 |
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Granted publication date: 20031231 Termination date: 20110506 |