CN104110762A - User-tracing sensing air conditioner and air-conditioner air valve control method - Google Patents
User-tracing sensing air conditioner and air-conditioner air valve control method Download PDFInfo
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Abstract
The invention provides a user-traced sensing air conditioner and an air-conditioner air valve control method and is applicable to the technical field of air conditioners. The user-tracing sensing air conditioner comprises at least one air valve, an infrared temperature sensor, an ultrasonic sensor, a rotation device and a microprocessor, wherein each air valve is connected with one air valve driver, and the microprocessor is respectively connected with the infrared temperature sensor, the ultrasonic sensor, the rotation device and the air valve drivers, determines angles of the air valves according to received data and controls rotation of the air valves by outputting control commands to the corresponding air valve drivers. The ultrasonic sensor is added on the basis of the infrared temperature sensor, a control mode of the microprocessor is correspondingly improved, and human bodies can be more accurately positioned by combining the infrared sensor and the ultrasonic sensor, so that the air conditioner has better user-tracing sensing effect.
Description
Technical field
The invention belongs to air-conditioning technical field, relate in particular to a kind of carry-on sense air-conditioning and air conditioner damper control method.
Background technology
Air-conditioning sense technology is with oneself exactly that people walks thereunto in a room, and air conditioning air outlet blows to human body all the time, makes people heating or cooling fast; Or control air port and avoid human body, avoid, because the human body that directly blowing causes is uncomfortable, comparing the mode that user manually sets blowing range, sense air-conditioning is more intelligent with oneself, and blowing range is more concentrated, more power saving, blowing range, centered by user, feels more comfortable.
The key that air-conditioning is felt with oneself technology is accurately to identify human body and human body position, location, then control the angle of air door, conventionally sense air-conditioning is all to locate realization by infrared measurement of temperature with oneself, the mode of locating by subregion is divided into a plurality of regions room, then in the temperature judging area in surveyed area, whether there is human body, then determine and determine blowing range.Whether infrared measurement of temperature can be judged in region has human body to exist, but human body positioning precision is just poor, and error generally has 2 meters of left and right, is difficult to reach carry-on sense effect.
Summary of the invention
In view of the above problems, the object of the present invention is to provide a kind of carry-on sense air-conditioning and air conditioner damper control method, be intended to solve that existing carry-on sense air-conditioning position error is large, the technical problem of poor effect.
On the one hand, described carry-on sense air-conditioning comprises at least one air door, and each air door is connected with air door driver, and described air-conditioning also comprises:
Infrared temperature sensor for Temperature Distribution in measured zone output temperature data;
Be used for the ultrasonic sensor of measuring object distance and exporting range data;
Be used for driving described infrared temperature sensor and ultrasonic sensor rotary scanning, and export the tumbler of rotational angle data;
For receiving the microprocessor of the rotational angle data of the temperature data of described infrared temperature sensor output, the range data of described ultrasonic sensor output, the output of described tumbler, described microprocessor is determined air door angle according to described temperature data, range data, rotational angle data and tumbler and air door centre distance, and rotates to control air door to described corresponding air door driver output control command.
On the other hand, described air conditioner damper control method comprises:
Control infrared temperature sensor and ultrasonic sensor rotary scanning, and receive the rotational angle data of the temperature data of described infrared temperature sensor output, the range data of described ultrasonic sensor output, the output of described tumbler, and obtain tumbler and air door centre distance;
According to described temperature data, range data, rotational angle data, and tumbler and air door centre distance determines air door angle, and rotates to control air door to described corresponding air door driver output control command.
The invention has the beneficial effects as follows: technical solution of the present invention has increased ultrasonic sensor on the basis of infrared temperature sensor, and correspondingly the control program of microprocessor is improved, according to the temperature data of described infrared temperature sensor output, the range data of described ultrasonic sensor output, the rotational angle data of described tumbler output and tumbler and air door centre distance are determined air door angle, and then according to described air door angle, control corresponding air door and rotate, air door is aimed to human body or avoided human body, because the present invention has increased ultrasonic sensor, infrared temperature sensor and ultrasonic sensor are more accurate in conjunction with location human body, make air-conditioning there is well sense effect with oneself.
Accompanying drawing explanation
Fig. 1 is single air door air-conditioning and left and right air door air-conditioning schematic diagram;
Fig. 2 is the structural representation of the carry-on sense air-conditioning that provides of first embodiment of the invention;
Fig. 3 is rotational angle-temperature relation figure and rotational angle-distance relation figure;
Fig. 4 is microprocessor architecture block diagram;
Fig. 5 is the geometrical relationship figure of human body distance, tumbler and air door centre distance, drift angle and air door angle;
Fig. 6 is the structural representation that rotates the carry-on sense air-conditioning of transposition while overlapping with air door central point;
Fig. 7 is the location diagram that outer temperature sensor does not overlap with the center of ultrasonic sensor;
Fig. 8 is the flow chart of the air conditioner damper control method that provides of second embodiment of the invention;
Fig. 9 is the particular flow sheet of the step S82 shown in Fig. 8.
The specific embodiment
In order to make object of the present invention, technical scheme and advantage clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
Air-conditioning generally includes an air door 1, single air door air-conditioning as shown in Figure 1a, but also there are some windy door air-conditionings, left and right air door air-conditioning as shown in Figure 1 b, but in any case, each air door is can be by air door driver drives independently, and described each air door driver is controlled air door and rotated under the control of described microprocessor.The present invention realizes human body by increase ultrasonic sensor accurately to locate, and then controls air door and rotate, and for technical solutions according to the invention are described, below by specific embodiment, describes.
embodiment mono-:
Fig. 2 shows the schematic construction of the carry-on sense air-conditioning that first embodiment of the invention provides, and only shows for convenience of explanation the part relevant to the embodiment of the present invention.
At least one air door 1 of carry-on sense air-conditioning that the present embodiment provides, each air door is connected with air door driver (not shown), and each air door is independent control, and described air-conditioning also comprises:
Infrared temperature sensor 2 for Temperature Distribution in measured zone output temperature data;
Be used for the ultrasonic sensor 3 of measuring object distance and exporting range data;
Be used for driving described infrared temperature sensor and ultrasonic sensor to rotate, and export the tumbler 4 of rotational angle data;
For receiving the temperature data of described infrared temperature sensor output, the range data of described ultrasonic sensor output, the microprocessor (not shown) of the rotational angle data of described tumbler output, described microprocessor respectively with described infrared temperature sensor 2, ultrasonic sensor 3, tumbler 4 is connected with air door driver, described microprocessor is according to described temperature data, range data, rotational angle data and tumbler and air door centre distance are determined air door angle, and to described corresponding air door driver output control command, control air door and rotate.For convenience of description, the center superposition of infrared temperature sensor 2 and ultrasonic sensor 3 in above-mentioned Fig. 2, in Fig. 2, tumbler is located at a certain position on air door axis, supposes that the central point A of tumbler and the distance between air door central point F are D.
When work, tumbler is controlled infrared temperature sensor and ultrasonic sensor rotary scanning once at regular intervals, under actual conditions, air conditioner damper has certain pendulum angle scope, suppose take that air door axis right is X-axis, the pendulum angle scope of air door is 30 °～150 °, rotate so transposition and control at regular intervals infrared temperature sensor and ultrasonic sensor from 30 ° of direction to 150 ° scanning directions once, or from 150 ° of direction to 30 ° scanning directions once.In each scanning process, described infrared temperature sensor can detect the temperature in all directions region in room, and export one group of continuous temperature data, described ultrasonic sensor sends ultrasonic signal, ultrasonic wave runs into barrier and returns, ultrasonic sensor receives inverse signal, according to sending ultrasonic signal and the time interval that receives inverse signal, just can calculate the distance of barrier, therefore ultrasonic wave also can be exported one group of continuous range data in scanning process, described tumbler can be exported equally one group of rotational angle data in rotation process simultaneously, as a kind of optimal way, described tumbler is stepper motor driven unit, comprise stepper motor and peripheral assembly thereof, stepper motor drives infrared temperature sensor and ultrasonic sensor by described peripheral assembly, stepper motor can forward or reverse, according to the stepping number of stepper motor forward or reverse, just can export one group of rotational angle data, described rotational angle data can be explained the residing angle direction of current tumbler, such as hypothesis stepper motor is since 30 ° of direction rotary scannings, the rotational angle data of now stepper motor output are 30 °, when stepper motor motor forward turns over after 10 °, the rotational angle data of stepper motor output are 40 ° so, therefore stepper motor can be exported one group of continuous rotational angle data.Therefore in each scanning process, just can obtain rotational angle-temperature relation figure and rotational angle-distance relation figure, respectively as shown in Figure 3 a and Figure 3 b shows.
As a kind of preferred implementation, as shown in Figure 4, described microprocessor comprises:
Data acquisition module 51, for obtaining the rotational angle data of the temperature data of described infrared temperature sensor output, the range data of described ultrasonic sensor output, the output of described tumbler, and tumbler and air door centre distance;
Border determination module 52, for determining human body bounds according to described temperature data and rotational angle data;
Apart from angle determination module 53, for determining the human body distance in described human body bounds according to described range data, and using described human body apart from corresponding rotational angle the drift angle as the relative air-conditioning of human body, described drift angle is line between human body and ultrasonic sensor and the angle of air door axis;
Order generates output module 54, for determining air door angle according to distance and the described drift angle at described human body distance, tumbler and air door center, and to control air door, rotates to corresponding air door driver output control command according to described air door angle.
Human normal body temperature is on average between 36～37 ℃, consider inevitably to have error in various fortuitous events and measurement, between setting 32～40 ℃, it is body temperature, exceeding this part object is judged as non-human, suppose that rotational angle-temperature relation figure of obtaining as shown in Figure 3 a after infrared temperature sensor scanning, when infrared temperature sensor scans human body, output temperature data are in room 36 ℃, while scanning other orientation, the temperature data of output is 24 ℃, rotational angle corresponding to the temperature data of border determination module within the scope of meeting 32～40 ℃ is as human body bounds, be 70 ° shown in Fig. 3 a～90 °, this shows that infrared temperature sensor finds that human body is within the scope of 70 °～90 ° (large sector region as shown in Figure 2) at its rotational angle, if scan unsuccessful, do not find human body in room, according to air-conditioning acquiescence mode, process.Suppose that rotational angle-distance relation figure of obtaining as shown in Figure 3 b after ultrasonic sensor scanning, apart from angle determination module, at described human body bounds (being that rotational angle is the scope of 70 °～90 °), determine human body distance L, described human body distance L is the distance between human body and ultrasonic sensor, and using described human body apart from corresponding rotational angle the drift angle β as the relative air-conditioning of human body, described drift angle β is line between human body and ultrasonic sensor and the angle of air door axis.
Because human body can be detected by infrared temperature sensor in room, human body can not kept off by other objects so, therefore preferred, described apart from angle determination module using the beeline in described human body bounds as human body distance L, in Fig. 3 b, within the scope of 70 °～90 °, beeline is 2.87m, L=2.87m now, further, because human body is not a point, rotational angle corresponding to therefore described human body distance (being the beeline in human body bounds) is a continuous angular range, 78 °～82 ° scopes as shown in Figure 3 b, within the scope of this, beeline is 2.87m, now as optimal way, using the median of described continuous angular range as drift angle, be β=80 °, drift angle, final order generates output module according to described human body distance L, the distance D at tumbler and air door center and drift angle β determine air door angle [alpha], and to control air door, rotate to corresponding air door driver output control command according to described air door angle [alpha].
When D is not 0, described tumbler is installed on non-air door center, and the A point in air door center F left side is as shown in Figure 2 determined air door angle [alpha] with reference to the geometrical relationship shown in Fig. 5:
(1) when D=L*Cos (β), as shown in Figure 5 b, air door angle [alpha]=90 ° now;
(2) when D<L*Cos (β), as shown in Figure 5 a, high h=L*Sin (β) on AF limit, by formula (L*Cos (β)-D) ,/h=Cot (α) draws,
(3) when D>L*Cos (β), as shown in Figure 5 c, high h=L*Sin (β) on AF limit, by formula (D-L*Cos (β))/h=Cot (π-α)=-Cot α, so Cot α=(L*Cos (β)-D)/h
Therefore,
To sum up, in such cases
When D is 0, described tumbler is installed on air door center, and now A point overlaps with F point, as shown in Figure 6, and α=β now.
Therefore no matter why D is worth, and all has air door angle
Because tumbler is run-down at regular intervals, if therefore human motion, the human body distance L obtaining after so each scanning may be different with drift angle β, now recalculate air door angle [alpha], then adjust corresponding air door rotation.
Below be all in the situation that the center superposition of described infrared temperature sensor and ultrasonic sensor calculates, if but described infrared temperature sensor does not overlap with the center of ultrasonic sensor, as shown in Figure 7, now between infrared temperature sensor and the axis of ultrasonic sensor, there is a relative angle γ, therefore described also need after obtaining human body bounds apart from angle determination module revised, suppose that human body bounds is [A1, A2], now described human body bounds is modified to [A1-γ, A2-γ], and at [A1-γ, A2-γ] the interior definite human body distance L of scope and drift angle β.
It should be noted that, in actual process, microprocessor does not need rotational angle-temperature relation figure and rotational angle-distance relation figure all to measure, can selectively measure according to actual conditions, and simplify and calculate, such as infrared temperature sensor is in scanning process, meet zero hour of human body temperature and the finish time corresponding opening and closing ultrasonic sensor respectively temperature being detected, ultrasonic sensor is directly using the beeline detecting between the starting period as human body distance, described human body apart from corresponding rotational angle as drift angle, can simplify calculating like this.
Here by a set of infrared temperature sensor, ultrasonic sensor and tumbler are called a set of combination unit, when air-conditioning has a plurality of air door, can a set of combination unit be set for each air door, microprocessor respectively overlaps according to receiving the corresponding air door rotation of Data Control that combination unit returns, certainly in order to reduce costs and to reduce amount of calculation, also a set of combination unit can be only set, data acquisition module obtains tumbler with respect to different air doors and air door centre distance D, apart from angle determination module, obtain again corresponding drift angle β, human body distance L is consistent, order generates output module and calculates air door angle [alpha] again, and rotate by corresponding air door driver control air door.
embodiment bis-:
Fig. 8 shows the flow process of the air conditioner damper control method that second embodiment of the invention provides, and only shows for convenience of explanation the part relevant to the embodiment of the present invention.
The air conditioner damper control method that the present embodiment provides is applicable to the carry-on sense air-conditioning described in embodiment mono-, and described method comprises:
Step S81, control infrared temperature sensor and ultrasonic sensor rotary scanning, and receive the rotational angle data of the temperature data of described infrared temperature sensor output, the range data of described ultrasonic sensor output, the output of described tumbler, and obtain tumbler and air door centre distance.
Can set by microprocessor the scan frequency of tumbler, such as setting every 15 seconds rotation transposition rotary scannings once, because infrared temperature sensor and ultrasonic sensor are driven by described rotation transposition, therefore described infrared temperature sensor and ultrasonic sensor also can be by the scan frequency scannings of setting, in scanning process, described infrared sensor can be exported one group of continuous temperature data, described ultrasonic sensor can be exported one group of continuous range data, described rotation transposition can be exported one group of continuous rotational angle data, microprocessor receives these data, can obtain rotational angle-temperature relation figure and rotational angle-distance relation figure.If rotate the non-central place that transposition is arranged on air door, so also need to obtain the distance D of rotating transposition and air door center.
Step S82, according to described temperature data, range data, rotational angle data, and tumbler and air door centre distance determines air door angle, and rotates to control air door to described corresponding air door driver output control command.
Microprocessor is determined air door angle according to described rotational angle-temperature relation figure and rotational angle-distance relation figure and tumbler and air door centre distance, and concrete, as shown in Figure 9, described step S82 comprises:
Step S821, according to described temperature data and rotational angle data, determine human body bounds.
In scanning process, there is human body can judge current region when temperature being detected and meet human body temperature in, and obtain rotational angle corresponding while meeting human body temperature as human body bounds, 70 °～90 ° scopes as shown in Figure 3 a in infrared temperature sensor.
Step S822, according to described range data, determine the human body distance in described human body bounds, and using described human body apart from corresponding rotational angle the drift angle as the relative air-conditioning of human body, described drift angle is line between human body and ultrasonic sensor and the angle of air door axis.
Owing to detecting in human body bounds, there is human body, therefore human body can not blocked by barrier, therefore as optimal way, the beeline in this step in human body bounds is as human body distance L, 2.87m as shown in Figure 3 b, because human body is not a point, therefore described human body is a continuous angular range apart from corresponding rotational angle, as shown in Figure 3 a 78 °～82 °, preferably, using the median of described continuous angular range as drift angle β, drift angle is 80 °.
Step S823, according to described human body distance, tumbler, determine air door angle with distance and the described drift angle at air door center, and according to described air door angle to corresponding air door driver output control command to control air door rotation.
When stating the center superposition of infrared temperature sensor and ultrasonic sensor, known with reference to geometrical analysis in embodiment mono-, air door angle
If tumbler is located at air door axis center, so D=0, now α=β.But if described infrared temperature sensor do not overlap with the center of ultrasonic sensor, there is a relative angle γ,
Microprocessor is again according to institute's air door angle output control command, by driving the corresponding air door of air door driver control to rotate, if desired human body is aimed in air port, control air door and rotate that to make its angle direction be 80 °, if desired human body is avoided in air port, the moving angular range of air door is 30 °～150 °, controls air door it is swung within the scope of 30 °～80 ° or 80 °～150 °.Now need human body bounds to revise, suppose that human body bounds, for [A1, A2], is now modified to [A1-γ, A2-γ] to described human body bounds, and determine human body distance L and drift angle β in [A1-γ, A2-γ] scope.
The foregoing is only preferred embodiment of the present invention, not in order to limit the present invention, although the present invention has been carried out to more detailed explanation with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified or part technical characterictic is wherein equal to replacement.All any modifications of doing within the spirit and principles in the present invention, be equal to and replace and improvement etc., within all should being included in protection scope of the present invention.
Claims (10)
1. feel with oneself an air-conditioning, comprise at least one air door, each air door is connected with air door driver, it is characterized in that, described air-conditioning also comprises:
Infrared temperature sensor for Temperature Distribution in measured zone output temperature data;
Be used for the ultrasonic sensor of measuring object distance and exporting range data;
Be used for driving described infrared temperature sensor and ultrasonic sensor rotary scanning, and export the tumbler of rotational angle data;
For receiving the microprocessor of the rotational angle data of the temperature data of described infrared temperature sensor output, the range data of described ultrasonic sensor output, the output of described tumbler, described microprocessor is determined air door angle according to described temperature data, range data, rotational angle data and tumbler and air door centre distance, and rotates to control air door to described corresponding air door driver output control command.
2. carry-on sense air-conditioning as claimed in claim 1, is characterized in that, described microprocessor comprises:
Data acquisition module, for obtaining the rotational angle data of the temperature data of described infrared temperature sensor output, the range data of described ultrasonic sensor output, the output of described tumbler, and tumbler and air door centre distance;
Border determination module, for determining human body bounds according to described temperature data and rotational angle data;
Apart from angle determination module, for determining the human body distance in described human body bounds according to described range data, and using described human body apart from corresponding rotational angle the drift angle as the relative air-conditioning of human body, described drift angle is line between human body and ultrasonic sensor and the angle of air door axis;
Order generates output module, for determining air door angle according to distance and the described drift angle at described human body distance, tumbler and air door center, and to control air door, rotates to corresponding air door driver output control command according to described air door angle.
3. carry-on sense air-conditioning as claimed in claim 2, is characterized in that, described apart from angle determination module using the beeline in described human body bounds as human body distance.
4. carry-on sense air-conditioning as claimed in claim 3, is characterized in that, described human body is a continuous angular range apart from corresponding rotational angle, using the median of described continuous angular range as drift angle.
5. the carry-on sense air-conditioning as described in claim 2-4 any one, it is characterized in that, if described infrared temperature sensor does not overlap with the center of ultrasonic sensor, described apart from angle determination module according to the relative position of described infrared temperature sensor and ultrasonic sensor, revise described human body bounds, and determine human body distance and the drift angle in described revised human body bounds according to described range data.
6. carry-on sense air-conditioning as claimed in claim 5, is characterized in that, described rotation transposition is stepper motor driven unit.
7. an air conditioner damper control method, is characterized in that, described method comprises:
Control infrared temperature sensor and ultrasonic sensor rotary scanning, and receive the rotational angle data of the temperature data of described infrared temperature sensor output, the range data of described ultrasonic sensor output, the output of described tumbler, and obtain tumbler and air door centre distance;
According to described temperature data, range data, rotational angle data, and tumbler and air door centre distance determines air door angle, and rotates to control air door to described corresponding air door driver output control command.
8. air conditioner damper control method as claimed in claim 7, it is characterized in that, described according to described temperature data, range data, rotational angle data, and tumbler and air door centre distance determines air door angle, and be specially with the step of controlling air door and rotating to described corresponding air door driver output control command:
According to described temperature data and rotational angle data, determine human body bounds;
According to described range data, determine the human body distance in described human body bounds, and using described human body apart from corresponding rotational angle the drift angle as the relative air-conditioning of human body, described drift angle is line between human body and ultrasonic sensor and the angle of air door axis;
According to distance and the described drift angle at described human body distance, tumbler and air door center, determine air door angle, and to control air door, rotate to corresponding air door driver output control command according to described air door angle.
9. air conditioner damper control method as claimed in claim 8, is characterized in that, described human body distance is the beeline in human body bounds.
10. air conditioner damper control method as claimed in claim 9, is characterized in that, described human body is a continuous angular range apart from corresponding rotational angle, using the median of described continuous angular range as drift angle.
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