CN102570964B - Set top box motor control method and system, and set top box - Google Patents
Set top box motor control method and system, and set top box Download PDFInfo
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- CN102570964B CN102570964B CN201210034109.8A CN201210034109A CN102570964B CN 102570964 B CN102570964 B CN 102570964B CN 201210034109 A CN201210034109 A CN 201210034109A CN 102570964 B CN102570964 B CN 102570964B
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- 238000000034 method Methods 0.000 title claims abstract description 65
- 230000007423 decrease Effects 0.000 claims description 11
- 238000001514 detection method Methods 0.000 claims description 11
- 230000001276 controlling effect Effects 0.000 description 12
- 238000005516 engineering process Methods 0.000 description 4
- 230000001105 regulatory effect Effects 0.000 description 3
- 230000033228 biological regulation Effects 0.000 description 2
- 230000010354 integration Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000003908 quality control method Methods 0.000 description 1
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Abstract
The embodiment of the invention discloses a set top box motor control method, a set top box motor control system and a set top box. The set top box motor control method comprises the following steps of: controlling a motor to rotate at an initial rotating speed; then controlling the motor to rotate to a position with the highest signal quality according to detected signal quality during rotation; and automatically adjusting the motor to ensure that an antenna is aligned with a satellite. According to the set top box motor control method, the adjustment efficiency is improved greatly; a user can use the set top box conveniently; the popularization and the application of the set top box are promoted; and furthermore, the motor is controlled to drive the antenna to be aligned with the satellite according to the actually detected signal quality, so that the motor can be adjusted more actually and precisely.
Description
Technical field
The present invention relates to digital TV field, relate in particular to a kind of Set Top Box motor control method, system and Set Top Box.
Background technology
Along with the input sustainable growth of country in satellite digital TV market, increasing user brings into use satellite set top box receiving digital television signal.In traditional Set Top Box, dispose motor, user generally comes satelloid by manual adjustments motor, has so both expended time in and manpower, also user has been caused to great inconvenience, has limited the further application of satellite set top box.
Summary of the invention
Embodiment of the present invention technical problem to be solved is, a kind of Set Top Box motor control method, system and Set Top Box are provided, and with automatic governor motor, makes antenna alignment satellite, improves and regulates efficiency and facilitate user.
In order to solve the problems of the technologies described above, the embodiment of the present invention has proposed a kind of Set Top Box motor control method, comprising:
Controlling motor rotates with initial speed;
In rotation process, according to detecting gained signal quality, control described revolution to the position of signal quality maximum,
In rotation process, according to detecting gained signal quality, control described revolution and comprise to the position of signal quality maximum:
When signal quality variation rate is when negative, control described motor according to maximum (top) speed value and described initial speed rotating in same direction, until described signal quality variation rate is being for just,
When described signal quality variation rate is timing, when its absolute value increases progressively, control described motor according to described maximum (top) speed value and described initial speed rotating in same direction; When its absolute value successively decreases, control described motor and reduce rotating speed and described initial speed rotating in same direction, and in described signal quality variation rate in positive vanishing process, control described motor and arrive the position of described signal quality maximum and stop with minimum speed value.
Correspondingly, the embodiment of the present invention also provides a kind of Set Top Box motor control system, comprises the motor of driven antenna, is connected with described motor:
Be used for controlling motor and rotate with initial speed, and control described revolution to the Set Top Box of the position of described signal quality maximum according to detecting gained signal quality in rotation process,
Described Set Top Box comprises:
Setting module, for setting described initial speed;
Detection module, for detection of described signal quality;
Control module, rotates with initial speed for controlling described motor, and controls described revolution to the position of described signal quality maximum according to signal quality described in rotation process,
Described control module comprises:
Computing module, for calculating the signal quality variation rate of described rotation process according to described signal quality;
Main control module, being used for controlling motor rotates with initial speed, and in rotation process when described signal quality variation rate is when negative, control described motor according to maximum (top) speed value and described initial speed rotating in same direction, until described signal quality variation rate is for just, when described signal quality variation rate is timing, when its absolute value increases progressively, control described motor according to described maximum (top) speed value and described initial speed rotating in same direction; When its absolute value successively decreases, control described motor and reduce rotating speed and described initial speed rotating in same direction, and in described signal quality variation rate in positive vanishing process, control described motor and arrive the position of described signal quality maximum and stop with minimum speed value.
Correspondingly, the embodiment of the present invention also provides a kind of Set Top Box, comprising:
Setting module, for setting the initial speed of motor;
Detection module, for detection of signal quality;
Control module, rotates with initial speed for controlling described motor, and controls described revolution to the position of described signal quality maximum according to signal quality described in rotation process,
Described control module comprises:
Computing module, for calculating the signal quality variation rate of described rotation process according to described signal quality;
Main control module, being used for controlling motor rotates with initial speed, and in rotation process when described signal quality variation rate is when negative, control described motor according to maximum (top) speed value and described initial speed rotating in same direction, until described signal quality variation rate is for just, when described signal quality variation rate is timing, when its absolute value increases progressively, control described motor according to described maximum (top) speed value and described initial speed rotating in same direction; When its absolute value successively decreases, control described motor and reduce rotating speed and described initial speed rotating in same direction, and in described signal quality variation rate in positive vanishing process, control described motor and arrive the position of described signal quality maximum and stop with minimum speed value.
The embodiment of the present invention is by providing a kind of Set Top Box motor control method, system and Set Top Box, first controlling motor rotates with initial speed, then in rotation process, according to detecting gained signal quality, control described revolution to the position of signal quality maximum, thereby governor motor makes antenna alignment satellite automatically, greatly improved adjusting efficiency, user-friendly, promoted applying of Set Top Box; In addition, by reality detect signal quality control motor driving antenna alignment satellite, make to regulate more closing to reality accurately.
Accompanying drawing explanation
Fig. 1 is the main flow chart of the Set Top Box motor control method of the embodiment of the present invention.
Fig. 2 is the signal quality curve figure of the Set Top Box motor control method of the embodiment of the present invention.
Fig. 3 is the primary structure figure of the Set Top Box motor control system of the embodiment of the present invention.
Fig. 4 is the primary structure figure of the control module 3033 in the Set Top Box 303 of the embodiment of the present invention.
Embodiment
Below in conjunction with accompanying drawing, the embodiment of the present invention is elaborated.
With reference to figure 1, the Set Top Box motor control method of the embodiment of the present invention mainly comprises:
101, control motor and rotate with initial speed;
102, in rotation process, according to detecting gained signal quality, control described revolution to the position of signal quality maximum (can be maximum value in maximum in an interval or all signal qualitys, lower together).
Particularly, user can set by control panel the initial speed (comprising size and direction) of motor, motor drives antenna to rotate in rotation process, and the signal quality in real time antenna being returned detects, according to the variation of signal quality, controllable motor stops in the position of signal quality maximum or approach signal quality maximum, or control motor stops in the position of approach signal quality maximum and the changing value of reference signal quality is finely tuned.In said process, motor can be take all the time initial speed and be rotated (now, for guaranteeing that final institute off-position is set to signal quality maximum or approach signal quality is maximum, the tachometer value of initial speed should not be excessive), or can be according to the Changing Pattern of signal quality, at signal quality, diminish gradually in process, improve tachometer value, make antenna pass through fast the poor region of signal quality, at signal quality, become gradually in large process afterwards, reduce tachometer value, make the antenna position of close signal quality maximum rallentando, to improve the precision regulating, during this time, when the position of revolution process signal quality maximum has also turned over a bit a little, now can be lower or minimum speed value rotate backward to turn to the position of signal quality maximum, in addition, can also utilize PID technology to adjust rotating speed with the proportionate relationship of signal quality variation rate and rotating speed, specifically can utilize described algorithm in the following example to realize:
Δu(t)＝q
0e(t)+q
1e(t-1)+q
2e(t-2)
Wherein, t is the time, and u (t) is the output valve of controller (Set Top Box), and e (t) is the error between controller input and set point, kp is proportionality coefficient, and Ti is integration time constant, and Td is derivative time constant, T is regulating cycle, and β is the separated threshold value of integration
When | e (t) | during≤β, q
0=kp (1+T/Ti+Td/T), q
1=-kp (1+2Td/T), q
2=kpTd/T;
When | e (t) | during > β, q
0=kp (1+Td/T), q
1=-kp (1+2Td/T), q
2=kpTd/T,
u(t)＝u(t-1)+Δu(t)，
Only have the speed that obtains next second of just using pid algorithm when signal quality increases progressively, controller set point is rotating speed u
0=0, controller input value is rotating speed u at that time
in, e in formula (t) is u
in-u
0, the rotating speed u that controller output valve is next second
out, i.e. u in formula (t), in formula, kp obtains according to the second dervative of signal quality.
With reference to Fig. 2, the invention provides an instantiation Set Top Box motor control method is described.
First, controlling motor rotates with initial speed;
Then, in rotation process, according to detecting gained signal quality, control described revolution to the position of signal quality maximum, initial speed can be as shown in curve arrow in figure, particularly along the direction of signal quality:
With reference to the section of A shown in Fig. 2, when signal quality variation rate, (signal quality is asked first derivative to the time, lower with) when negative, control motor according to maximum (top) speed value and initial speed rotating in same direction, until signal quality variation rate is for just, like this, can guarantee that motor passes through the poor region of signal quality with prestissimo, improve and regulate efficiency also to save user time;
With reference to the section of B shown in Fig. 2, when signal quality variation rate is timing, when its absolute value (signal quality is asked second dervative to the time, lower same) increases progressively, control motor according to maximum (top) speed value and initial speed rotating in same direction, with reference to the section of C shown in Fig. 2, when its absolute value successively decreases, control motor and reduce rotating speed and initial speed rotating in same direction, and in signal quality variation rate in positive vanishing process, control motor with the position D of minimum speed value arriving signal quality maximum and stop, when motor passes through the position D of signal quality maximum, tachometer value is greater than minimum speed value, after the position D through signal quality maximum, controlling motor rotates backward to the position D of signal quality maximum and stops with minimum speed value and initial speed, like this, can reduce the error that position D that motor forward (initial speed direction) turns over signal quality maximum causes, reach higher degree of regulation.
With reference to Fig. 3, the Set Top Box motor control system of the embodiment of the present invention, the motor 301 that comprises driven antenna, and be connected with motor 301 by 22K line 302: for controlling motor 301, with initial speed, rotate, and control according to detecting gained signal quality in rotation process the Set Top Box 303 that motor 301 turns to the position of signal quality maximum, particularly, Set Top Box 303 comprises:
Setting module 3031, for setting initial speed;
Detection module 3032, for detection of signal quality;
The control module 3033 being connected with setting module 3031 and detection module 3032 respectively, being used for controlling motor 301 rotates with initial speed, and control according to signal quality in rotation process the position that motor 301 turns to signal quality maximum, user can be control panel by setting module 3031() set the initial speed (comprising size and direction) of motor 301, motor 301 drives antenna to rotate in rotation process, and the signal quality in real time antenna being returned detects, according to the variation of signal quality, controllable motor 301 stops in the position of signal quality maximum or approach signal quality maximum, or control motor 301 stops in the position of approach signal quality maximum and the changing value of reference signal quality is finely tuned.In said process, motor 301 can be take all the time initial speed and be rotated (now, for guaranteeing that final institute off-position is set to signal quality maximum or approach signal quality is maximum, the tachometer value of initial speed should not be excessive), or can be according to the Changing Pattern of signal quality, at signal quality, diminish gradually in process, improve tachometer value, make antenna pass through fast the poor region of signal quality, at signal quality, become gradually in large process afterwards, reduce tachometer value, make the antenna position of close signal quality maximum rallentando, to improve the precision regulating, during this time, the position of rotating through signal quality maximum when motor 301 has also turned over a bit a little, now can be lower or minimum speed value rotate backward to turn to the position of signal quality maximum, in addition, can also utilize PID technology to adjust rotating speed with the proportionate relationship of signal quality variation rate and rotating speed.
With reference to Fig. 4, as a kind of execution mode, control module 3033 can comprise:
The main control module 402 being connected with computing module 401, being used for controlling motor 301 rotates with initial speed, and in rotation process when signal quality variation rate is when negative, control motor 301 according to maximum (top) speed value and initial speed rotating in same direction, until signal quality variation rate is for just, when signal quality variation rate is timing, when its absolute value increases progressively, control motor 301 according to described maximum (top) speed value and initial speed rotating in same direction; When its absolute value successively decreases, control motor 301 and reduce rotating speed and initial speed rotating in same direction, and in signal quality variation rate in positive vanishing process, control motor 301 is with the position of minimum speed value arriving signal quality maximum and stop.
In order to reduce motor 301 forwards (initial speed direction), turn over the error that cause the position of signal quality maximum, reach higher degree of regulation, main control module 402 can specifically comprise:
First controls submodule, and for when signal quality variation rate is when negative, control motor 301 is according to maximum (top) speed value and initial speed rotating in same direction, until signal quality variation rate is for just;
Second controls submodule, for being timing when signal quality variation rate, when its absolute value increases progressively, controls motor 301 according to maximum (top) speed value and initial speed rotating in same direction; When its absolute value successively decreases, control motor 301 and reduce rotating speed and initial speed rotating in same direction, and in signal quality variation rate in positive vanishing process, when motor 301 during through the position of signal quality maximums tachometer value be greater than minimum speed value, behind the position through signal quality maximum, control motor 301 and rotate backward to the position of signal quality maximum and stop with minimum speed value and initial speed.
It should be noted that, the numerical value of above-mentioned rotating speed can be selected to adopt according to actual conditions.
In addition, one of ordinary skill in the art will appreciate that all or part of flow process realizing in above-described embodiment method, to come the hardware that instruction is relevant to complete by program, described program can be stored in a computer read/write memory medium, this program, when carrying out, can comprise as the flow process of the embodiment of above-mentioned each side method.Wherein, described storage medium can be magnetic disc, CD, read-only store-memory body (Read-Only Memory, ROM) or random store-memory body (Radom Access Memory, RAM) etc.
The above is the specific embodiment of the present invention; it should be pointed out that for those skilled in the art, under the premise without departing from the principles of the invention; can also make some improvements and modifications, these improvements and modifications are also considered as protection scope of the present invention.
Claims (6)
1. a Set Top Box motor control method, is characterized in that, comprising:
Controlling motor rotates with initial speed;
In rotation process, according to detecting gained signal quality, control described revolution to the position of signal quality maximum,
In rotation process, according to detecting gained signal quality, control described revolution and comprise to the position of signal quality maximum:
When signal quality variation rate is when negative, control described motor according to maximum (top) speed value and described initial speed rotating in same direction, until described signal quality variation rate is being for just,
When described signal quality variation rate is timing, when its absolute value increases progressively, control described motor according to described maximum (top) speed value and described initial speed rotating in same direction; When its absolute value successively decreases, control described motor and reduce rotating speed and described initial speed rotating in same direction, and in described signal quality variation rate in positive vanishing process, control described motor and arrive the position of described signal quality maximum and stop with minimum speed value.
2. the method for claim 1, it is characterized in that, in described signal quality variation rate in positive vanishing process, controlling described motor arrives the position of described signal quality maximum and stops being specially with minimum speed value: when described motor during through the position of described signal quality maximum tachometer value be greater than described minimum speed value, behind the position through described signal quality maximum, control described motor and rotate backward to the position of described signal quality maximum and stop with described minimum speed value and described initial speed.
3. a Set Top Box motor control system, comprises and it is characterized in that the motor of driven antenna, is connected with described motor:
Be used for controlling motor and rotate with initial speed, and control described revolution to the Set Top Box of the position of described signal quality maximum according to detecting gained signal quality in rotation process,
Described Set Top Box comprises:
Setting module, for setting described initial speed;
Detection module, for detection of described signal quality;
Control module, rotates with initial speed for controlling described motor, and controls described revolution to the position of described signal quality maximum according to signal quality described in rotation process,
Described control module comprises:
Computing module, for calculating the signal quality variation rate of described rotation process according to described signal quality;
Main control module, being used for controlling motor rotates with initial speed, and in rotation process when described signal quality variation rate is when negative, control described motor according to maximum (top) speed value and described initial speed rotating in same direction, until described signal quality variation rate is for just, when described signal quality variation rate is timing, when its absolute value increases progressively, control described motor according to described maximum (top) speed value and described initial speed rotating in same direction; When its absolute value successively decreases, control described motor and reduce rotating speed and described initial speed rotating in same direction, and in described signal quality variation rate in positive vanishing process, control described motor and arrive the position of described signal quality maximum and stop with minimum speed value.
4. system as claimed in claim 3, is characterized in that, described main control module comprises:
First controls submodule, for when described signal quality variation rate is when bearing, controls described motor according to maximum (top) speed value and described initial speed rotating in same direction, until described signal quality variation rate is for just;
Second controls submodule, for being timing when described signal quality variation rate, when its absolute value increases progressively, controls described motor according to described maximum (top) speed value and described initial speed rotating in same direction; When its absolute value successively decreases, control described motor and reduce rotating speed and described initial speed rotating in same direction, and in described signal quality variation rate in positive vanishing process, when described motor during through the position of described signal quality maximum tachometer value be greater than described minimum speed value, behind the position through described signal quality maximum, control described motor and rotate backward to the position of described signal quality maximum and stop with described minimum speed value and described initial speed.
5. a Set Top Box, is characterized in that, comprising:
Setting module, for setting the initial speed of motor;
Detection module, for detection of signal quality;
Control module, rotates with initial speed for controlling described motor, and controls described revolution to the position of described signal quality maximum according to signal quality described in rotation process,
Described control module comprises:
Computing module, for calculating the signal quality variation rate of described rotation process according to described signal quality;
Main control module, being used for controlling motor rotates with initial speed, and in rotation process when described signal quality variation rate is when negative, control described motor according to maximum (top) speed value and described initial speed rotating in same direction, until described signal quality variation rate is for just, when described signal quality variation rate is timing, when its absolute value increases progressively, control described motor according to described maximum (top) speed value and described initial speed rotating in same direction; When its absolute value successively decreases, control described motor and reduce rotating speed and described initial speed rotating in same direction, and in described signal quality variation rate in positive vanishing process, control described motor and arrive the position of described signal quality maximum and stop with minimum speed value.
6. Set Top Box as claimed in claim 5, is characterized in that, described main control module comprises:
First controls submodule, for when described signal quality variation rate is when bearing, controls described motor according to maximum (top) speed value and described initial speed rotating in same direction, until described signal quality variation rate is for just;
Second controls submodule, for being timing when described signal quality variation rate, when its absolute value increases progressively, controls described motor according to described maximum (top) speed value and described initial speed rotating in same direction; When its absolute value successively decreases, control described motor and reduce rotating speed and described initial speed rotating in same direction, and in described signal quality variation rate in positive vanishing process, when described motor during through the position of described signal quality maximum tachometer value be greater than described minimum speed value, behind the position through described signal quality maximum, control described motor and rotate backward to the position of described signal quality maximum and stop with described minimum speed value and described initial speed.
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Citations (5)
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|---|---|---|---|---|
| KR20040063318A (en) * | 2003-01-07 | 2004-07-14 | 주식회사 디도 | Single auto position satellite antenna |
| CN1972010A (en) * | 2005-11-23 | 2007-05-30 | 英保达股份有限公司 | Self-regulation method and system of antenna |
| CN101009822A (en) * | 2007-01-22 | 2007-08-01 | 王可 | Automatic satellite searching method and automatic satellite searching device for the same |
| WO2011075632A2 (en) * | 2009-12-18 | 2011-06-23 | Palm, Inc. | Techniques to manage a mobile device based on network density |
| CN202488399U (en) * | 2012-02-15 | 2012-10-10 | 深圳市纽格力科技有限公司 | Motor control system of set top box and set top box |
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2012
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Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040063318A (en) * | 2003-01-07 | 2004-07-14 | 주식회사 디도 | Single auto position satellite antenna |
| CN1972010A (en) * | 2005-11-23 | 2007-05-30 | 英保达股份有限公司 | Self-regulation method and system of antenna |
| CN101009822A (en) * | 2007-01-22 | 2007-08-01 | 王可 | Automatic satellite searching method and automatic satellite searching device for the same |
| WO2011075632A2 (en) * | 2009-12-18 | 2011-06-23 | Palm, Inc. | Techniques to manage a mobile device based on network density |
| CN202488399U (en) * | 2012-02-15 | 2012-10-10 | 深圳市纽格力科技有限公司 | Motor control system of set top box and set top box |
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Inventor after: Cao Lihua Inventor after: Huang Jian Inventor after: Liu Liangxun Inventor before: Wang Dongyu Inventor before: Cao Lihua Inventor before: Huang Jian Inventor before: Liu Liangxun |
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