CN101711056A - Method and system for controlling base station power - Google Patents
Method and system for controlling base station power Download PDFInfo
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- CN101711056A CN101711056A CN200910109645A CN200910109645A CN101711056A CN 101711056 A CN101711056 A CN 101711056A CN 200910109645 A CN200910109645 A CN 200910109645A CN 200910109645 A CN200910109645 A CN 200910109645A CN 101711056 A CN101711056 A CN 101711056A
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Abstract
The invention discloses a method and system for controlling base station power, aiming to keep base station power stable. The method takes equipment delivery state as the standard state and collects the voltage and corresponding power value of at least two groups of base stations at the standard state; and the collected voltage and the corresponding power value are used to calculate and simulate coefficients A and B in a logarithmic equation P=A*log10V+B so as to form a logarithmic curve representing power voltage relation, and the coefficients A and B and the power value are stored in the EEPROM of the system; after the voltage V of the base station is collected, the logarithmic equation P=A*log10V+B is used for calculating the power value P corresponding to the voltage V; and according to the deviation condition of the power value P and a prestored power, power regulation is started. The method and the system of the invention can use sectionalized logarithmic curves to accurately calculate power, the calculation error is small, so that the method and the system of the invention can effectively control base station power and keep the system stable.
Description
Technical field
The present invention relates to the power control in the network base station, relate in particular to a kind of method and system by the control of chip microcontroller base station power.
Background technology
Power control is very important module in the network base station, and it is directly connected to the stable and maintainable of whole base station.Unusual when the power appearance of network base station, all can cause system's instability as power is too high or too low, influence the normal operation of network base station, therefore need take measures the power of network base station is controlled.
A difficult point of power control is a precision problem, and the general at present fundamental formular that adopts producer to provide is come rated output, yet the precision of computing is often poor.This is because after the power amplifier board design is finished, the hardware circuit property of there are differences, and there is error in components and parts as group container piece parameter, amplifier amplification coefficient etc., cause system's instability thereby the fundamental formular that will cause operation result to depart from producer together providing is provided these factors.Therefore need a kind of method to be used for the power of network base station is control effectively, and set up the cover system of power controlling at short notice.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of control method and system of base station power, the accurate Calculation base station power, and it is stable with guaranteed output to regulate base station power.
In order to solve the problems of the technologies described above, the present invention adopts following technical scheme:
A kind of control method of base station power is standard state when dispatching from the factory with equipment, gathers the voltage and the corresponding performance number P thereof of standard state at least two group base stations
0, utilize the voltage and the corresponding performance number thereof of being gathered to calculate simulation logarithmic equation P=A * log
10Coefficient A and B among the V+B form the logarithmic curve that characterizes the power voltage relation, described coefficient A and B and performance number P thus
0Be saved among the EEPROM of system; Described control method may further comprise the steps:
I, system start-up are also finished hardware initialization;
The voltage V of ii, system acquisition base station;
Iii, system transfer coefficient A and the B that is pre-stored in EEPROM, utilize logarithmic equation P=A * log
10V+B calculates the pairing performance number P of described voltage V;
If the described performance number P of iv departs from the performance number P that is pre-stored in EEPROM
0, system regulates base station power and makes it as far as possible near described performance number P
0
V, make system be in monitored state to step I v with the time interval repeating said steps ii that sets.
In described step I v, when described power P greater than the power P that prestores
0The time, system increases the circuit decay by opening decay control I/O; When described power P less than the power P that prestores
0The time, system reduces the circuit decay by opening decay control I/O.
Described method also comprises the steps: to close two-way BIAS when abnormality appears in system, and the information that gives a warning also waits for that reflection power is normal.Described abnormality refers to that temperature is too high or reflection power is excessive.
The control method of described base station power also comprises following technical characterictic:
Between the minimum and maximum power of system, gather the base station voltage and the corresponding performance number thereof of five sampled points with the appropriate voltage step pitch, obtain the voltage and the performance number of five groups of sampled points thus, utilize the base station voltage of two adjacent groups sampled point and corresponding performance number thereof to obtain one group of simulation logarithmic equation P=A * log
10Coefficient A and B among the V+B obtain four groups of coefficient A and B and four sections power voltage logarithmic curves thus, and four sections power voltage logarithmic curves are joined end to end in order forms a logarithmic curve that the sign power voltage relation of degree of precision is arranged.
Adopt not equidistant voltage step apart from the voltage and the performance number of gathering sampled point, in the big part of measure error, with less voltage step distance, in the little place of measure error, with bigger voltage step distance.
The present invention also adopts following technical scheme:
A kind of control system of base station power is used to make the power of base station to keep stable, and described system comprises:
Single-chip microcomputer is used for according to logarithmic equation P=A * log
10V+B comes voltage and the corresponding power thereof that simulation process gathers, and sends the control command of the attenuation rate of regulating circuit according to the deviation of the power of real-time calculating and preset standard power;
EEPROM is used for the logarithmic equation P=A * log of storage standards state
10Coefficient A among the V+B and B and pairing voltage and power;
Decay control I/O unit is used for the attenuation rate that the deviation value according to base station power and preset standard power comes control circuit, makes the power of base station keep stablizing;
The AD7265 unit connects the voltage sample end, is used to read the real-time voltage value of base station;
Described single-chip microcomputer is connected with described EEPROM is two-way, and the signal input and output side of described single-chip microcomputer connects described AD7265 unit and decay control I/O unit respectively.
Described system also comprises: with the two-way serial ports UART module that is connected of described single-chip microcomputer, be used for communicating with PC or host computer; And with the two-way AD8802 unit that is connected of described single-chip microcomputer, be used for when abnormality appears in system, closing two-way BIAS, the information that gives a warning also waits for that reflection power is normal.
Compared with prior art, useful technique effect of the present invention is: by the power of logarithmic curve analog computation base station, only need to gather a spot of data volume and just can utilize the logarithmic curve rated output; When utilizing the logarithmic curve rated output of segmentation, the error of calculation even can be reduced to 2% is calculated accurately highly, can effectively control base station power and guarantee system stability.
Description of drawings
Fig. 1 is the block diagram of the control system of a kind of base station power of providing of the embodiment of the invention;
Fig. 2 is the flow chart of the control method of a kind of base station power of providing of the embodiment of the invention;
Fig. 3 logarithmic curve-fitting power that to be the present invention obtain by two groups of sampled points and the comparative graph of measured power;
Fig. 4 is that logarithmic curve that the present invention obtains by two groups of sampled points is when being used for rated output and the error curve diagram of measured power value;
Fig. 5 is the output voltage and the performance number of five groups of collection points providing of the embodiment of the invention;
Fig. 6 is the coefficient value that collection point of the present invention output voltage and performance number obtain when being used to ask the logarithmic curve coefficient;
Fig. 7 is that four sections logarithmic curves that the present invention obtains by five groups of sampled points are when being used for rated output and the error curve diagram of measured power value;
Fig. 8 is that the method that the embodiment of the invention provides is carried out the flow chart that the circuit decay is regulated to real-time voltage.
Embodiment
Below in conjunction with accompanying drawing and most preferred embodiment, the present invention is described in further details.
The present invention utilizes the logarithmic equation P=A * log that characterizes the power voltage relation
10V+B comes the power of analog computing device such as base station.Voltage and corresponding power thereof when just having produced by gathering at least two group equipment utilize logarithmic curve equation P=A * log
10V+B calculates coefficient A and B, forms the logarithmic curve equation, as the foundation of base station power calculating.If further improve the precision of calculating, can gather five groups of voltages and corresponding power thereof, calculate five groups of coefficient A and B, form the logarithmic curve equation of segmentation, be used to calculate the pairing power of real-time voltage under each different segmentation voltages.For the ease of understanding the control method of base station power of the present invention, at first system of the present invention is described.
Fig. 1 shows the block diagram of the control system of base station power of the present invention.As shown in Figure 1, system of the present invention comprises Dan Pinji 1, EEPROM2, decay control I/O unit 3, AD7265 unit 4.Described single-chip microcomputer is connected with described EEPROM2 is two-way, and the signal input and output side of described single-chip microcomputer connects described AD7265 unit 4 and decay control I/O unit 3 respectively.
Described single-chip microcomputer 1 is used for according to logarithmic equation P=A * log
10V+B comes voltage and the corresponding power thereof that simulation process gathers, and sends the control command of the attenuation rate of regulating circuit according to the deviation of the power of real-time calculating and preset standard power.Described single-chip microcomputer 1 is 16 single-chip microcomputers of auspicious Sa science and technology M16 series, this single-chip microcomputer 1 band PLL function, and cpu clock can frequency multiplication arrive 21Mhz, can significantly improve the responding ability of whole system; Through measurement, about 4.5ms of system feedback optimal response time, feedback adjusting normal condition maximum duration needs 50ms approximately.This single-chip microcomputer 1 has the memory headroom of 1M byte in addition, and counting when collection does not need to extend out ram when increasing, and has reduced cost of hardware design.
Described EEPROM2 is used for the logarithmic equation P=A * log of storage standards state
10Coefficient A among the V+B and B and pairing voltage and power.By with 1 two-way connection of single-chip microcomputer, described EEPROM2 can make single-chip microcomputer 1 utilize logarithmic equation to calculate the power of real-time voltage correspondence with coefficient A and B and data load such as pairing voltage and power in the internal memory of single-chip microcomputer 1.
Described decay control I/O unit 3 is used for the attenuation rate that the deviation value according to base station power and preset standard power comes control circuit, makes the power of base station keep stablizing;
Described AD7265 unit 4 connects the voltage sample end, is used to read the real-time voltage value of base station.Described AD7265 unit is 12bit, if the reference voltage of AD be 5V then error be (1/212) * 5 ≈ 1mv, therefore can tell the voltage fluctuation of 0.001V, improved control accuracy.
System of the present invention also comprises and the two-way serial ports UART module 6 that is connected of described single-chip microcomputer, is used for communicating with PC or host computer; And with the two-way AD8802 unit 5 that is connected of described single-chip microcomputer, be used for when abnormality appears in system, closing two-way BIAS, the information that gives a warning also waits for that reflection power is normal.
Fig. 2 shows the control method flow process based on base station power of the present invention.For convenience of description, only show part related to the present invention here.
In step S201, when just having dispatched from the factory standard state with equipment, gather the voltage and the corresponding performance number thereof of standard state at least two group base stations.
In step S202, voltage that the single-chip microcomputer utilization is gathered and corresponding performance number thereof are calculated simulation logarithmic equation P=A * log
10Coefficient A and B among the V+B form the logarithmic curve that characterizes the power voltage relation thus, and described coefficient A and B are saved among the EEPROM of system.
The present invention is by logarithmic curve P=A * log
10The variation of V+B simulated power, P and V are respectively power and the voltage under a certain state, A and B are the coefficients of logarithmic curve.When equipment has just been produced, current power does not depart from normal power substantially, has determined the coefficient A and the B of next group logarithmic curve of standard state, just can utilize the power of the interior equipment of a period of time that the curvilinear equation computing equipment just produced.Therefore as long as in step S201, gather two groups of data, as maximum power and corresponding voltage value, minimum power and corresponding voltage value thereof, the coefficient A and the B of logarithmic curve just can settle the standard, then coefficient is saved among the EEPROM, thereby when system start-up, just can calls the power that the logarithmic curve equation is used for computing equipment.
In step S203, system start-up is also finished the hardware initialization operation.
In step S204, the voltage V of system acquisition base station.After collecting voltage V, system transfers coefficient A and the B that is pre-stored in EEPROM, utilizes logarithmic equation P=A * log
10V+B calculates the pairing performance number P of described voltage V.
Owing in step S202, calculated the coefficient A and the B of logarithmic equation,, just can utilize logarithmic equation P=A * log after collecting voltage V as long as read this two coefficients
10V+B calculates current performance number P.System's situation of performance number that prestores may appear departing from because of ageing equipment or other factors of instability in described current power P, thus need power P be regulated, stable to keep system power.
In step S205, if described performance number P departs from the performance number that is pre-stored in EEPROM, system regulates base station power and makes it as far as possible near described performance number.When described power P during greater than the power that prestores, system increases the circuit decay by opening decay control I/O; When described power P during less than the power that prestores, system reduces the circuit decay by opening decay control I/O.
In step S206, make system be in monitored state to step S205 with the time interval repeating said steps S203 that sets.
Aforesaid method is utilized a logarithmic equation P=A * log
10V+B can realize that analog computation goes out the power of equipment, and by decay control I/O unit scalable power, makes system keep power stability.After equipment has used a period of time, only utilize a logarithmic equation to come the rated output time error to increase.
The error condition that Fig. 3 and Fig. 4 show equipment when using the logarithmic curve of being obtained by two groups of sampled points after a period of time to be used for rated output; By Fig. 3 or Fig. 4 as can be seen, in the two ends of curve were maximum power and minimum power correspondence 2, error was 0; But at the mid portion of curve, the worst error of measured power and matched curve rated output reaches 15%.
Therefore as another embodiment of the present invention, the method that the further proposition of the present invention comes computing equipment power by the segmentation logarithmic curve is to improve computational accuracy.Preface step I before the described method) is: the base station voltage and the corresponding performance number thereof of between the minimum and maximum power of system, gathering five sampled points with the appropriate voltage step pitch, obtain the voltage and the performance number of five groups of sampled points thus, utilize the base station voltage of two adjacent groups sampled point and corresponding performance number thereof to obtain one group of simulation logarithmic equation P=A * log
10Coefficient A and B among the V+B obtain four groups of coefficient A and B and four sections power voltage logarithmic curves thus, and four sections power voltage logarithmic curves are joined end to end in order forms a logarithmic curve that the sign power voltage relation of degree of precision is arranged.
The logarithmic curve of different segmentations is used to calculate the pairing power of voltage of different segmentations.The pairing power of certain real-time voltage in one section voltage range must calculate by the logarithmic curve of this section voltage correspondence.And the selection of sampled point can be carried out according to the characteristics of logarithmic curve, samples with unequal step pitch, and the big part of measure error is with less voltage step distance, and the little place of measure error is with bigger step pitch.
Shown in Fig. 5 is the five groups of voltages and the corresponding performance number thereof of being gathered with asynchronous distance.Calibration point 1 and the voltage of calibration point 2 and the performance number of correspondence thereof as according to Fig. 5 can obtain one group of simulation logarithmic equation P=A * log
10Coefficient A and B among the V+B; Be about to the input voltage V1=0.619 of calibration point 1, the input voltage V2=0.205 of input power P1=-10.0 and calibration point 2, input power P2=-7.0 is substitution equation P=A * log respectively
10V+B can calculate one group of coefficient value A and B, and the curvilinear equation of this group coefficient value correspondence can be used for the calculating voltage scope between 0.205 to 0.619 volt of pairing power.In like manner, according to calibration point 2 and calibration point 3, calibration point 3 and calibration point 4, calibration point 4 and calibration point 5 can both solve one group of coefficient value respectively, so can form the coefficient value of 4 groups of logarithmic curves as shown in Figure 6.
Utilize the subsequent step of the logarithmic curve rated output of segmentation ii) to comprise aforesaid step S203 to step S205, as shown in Figure 8, promptly the voltage V of system acquisition base station transfers the coefficient A and the B that are pre-stored in EEPROM, utilizes logarithmic equation P=A * log
10V+B calculates the pairing performance number P of described voltage V, thereby starting power is regulated: when described power P during greater than the power that prestores, increase the circuit decay; When described power P during, reduce the circuit decay less than the power that prestores.Error condition when Fig. 7 shows four sections logarithmic curves being obtained by five groups of sampled points and is used for rated output, this moment, logarithmic curve-fitting power overlapped substantially with the curve of measured power, the power of obtaining by four sections logarithmic curves and the error of measured power are no more than 2%, and described four sections logarithmic curves can be used to calculate the power of real-time voltage correspondence.
In step S207, when appearring in system, abnormality closes two-way BIAS, and the information that gives a warning also waits for that reflection power is normal.The abnormality of system comprises that temperature is too high, reflection power is excessive, close two-way BIAS when spending above 85 as temperature, to play the effect of protection base station.
In sum, the present invention only need gather two groups of voltages and corresponding power thereof by the power of logarithmic curve analog computation real-time voltage correspondence when equipment is just produced, utilize a logarithmic curve just can calculate the power of equipment; According to requirement to error limitation, when needing further to improve precision, can gather five groups of voltages and performance number, form four sections logarithmic curves to calculate power corresponding under the different segmentation voltage ranges.The present invention only needs to gather a spot of data volume, just can accurate Calculation power, and utilize the segmentation logarithmic curve to calculate time error even can reduce in 2%, greatly improved computational accuracy, achieve effective control base station power guaranteed output is stable.
Claims (9)
1. the control method of a base station power is intended to make the power of base station to keep stable, it is characterized in that: be standard state when dispatching from the factory with equipment, gather the voltage and the corresponding performance number P thereof of standard state at least two group base stations
0, utilize the voltage and the corresponding performance number thereof of being gathered to calculate simulation logarithmic equation P=A * log
10Coefficient A and B among the V+B form the logarithmic curve that characterizes the power voltage relation, described coefficient A and B and performance number P thus
0Be saved among the EEPROM of system; Described control method may further comprise the steps:
I, system start-up are also finished hardware initialization;
The voltage V of ii, system acquisition base station;
Iii, system transfer coefficient A and the B that is pre-stored in EEPROM, utilize logarithmic equation P=A * log
10V+B calculates the pairing performance number P of described voltage V;
If the described performance number P of iv departs from the performance number P that is pre-stored in EEPROM
0, system regulates base station power and makes it as far as possible near described performance number P
0
V, make system be in monitored state to step I v with the time interval repeating said steps ii that sets.
2. the control method of base station power according to claim 1 is characterized in that: in described step I v, when described power P greater than the power P that prestores
0The time, system increases the circuit decay by opening decay control I/O; When described power P less than the power P that prestores
0The time, system reduces the circuit decay by opening decay control I/O.
3. the control method of base station power according to claim 2, it is characterized in that: described method also comprises the steps: to close two-way BIAS when abnormality appears in system, and the information that gives a warning also waits for that reflection power is normal.
4. according to the control method of the described base station power of the arbitrary claim of claim 1 to 3, it is characterized in that: the base station voltage and the corresponding performance number thereof of between the minimum and maximum power of system, gathering five sampled points with the appropriate voltage step pitch, obtain the voltage and the performance number of five groups of sampled points thus, utilize the base station voltage of two adjacent groups sampled point and corresponding performance number thereof to obtain one group of simulation logarithmic equation P=A * log
10Coefficient A and B among the V+B obtain four groups of coefficient A and B and four sections power voltage logarithmic curves thus, and four sections power voltage logarithmic curves are joined end to end in order forms a logarithmic curve that the sign power voltage relation of degree of precision is arranged.
5. the control method of base station power according to claim 4, it is characterized in that: adopt not equidistant voltage step apart from the voltage and the performance number of gathering sampled point, in the big part of measure error, with less voltage step distance, in the little place of measure error, with bigger voltage step distance.
6. the control method of base station power according to claim 3, it is characterized in that: described abnormality refers to that temperature is too high or reflection power is excessive.
7. the control system of a base station power is used to make the power of base station to keep stable, it is characterized in that comprising:
Single-chip microcomputer (1) is used for according to logarithmic equation P=A * log
10V+B comes voltage and the corresponding power thereof that simulation process gathers, and sends the control command of the attenuation rate of regulating circuit according to the deviation of the power of real-time calculating and preset standard power;
EEPROM (2) is used for the logarithmic equation P=A * log of storage standards state
10Coefficient A among the V+B and B and pairing voltage and power;
Decay control I/O unit (3) is used for the attenuation rate that the deviation value according to base station power and preset standard power comes control circuit, makes the power of base station keep stablizing;
AD7265 unit (4) connects the voltage sample end, is used to read the real-time voltage value of base station;
Described single-chip microcomputer (1) and two-way connection of described EEPROM (2), the signal input and output side of described single-chip microcomputer (1) connect described AD7265 unit (4) and decay control I/O unit (3) respectively.
8. base station power control system according to claim 7 is characterized in that also comprising: with the two-way serial ports UART module (6) that is connected of described single-chip microcomputer (1), be used for communicating with PC or host computer.
9. base station power control system according to claim 8, it is characterized in that also comprising: with the two-way AD8802 unit (5) that is connected of described single-chip microcomputer (1), be used for closing two-way BIAS when abnormality appears in system, the information that gives a warning also waits for that reflection power is normal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101096458A CN101711056B (en) | 2009-11-12 | 2009-11-12 | Method and system for controlling base station power |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101096458A CN101711056B (en) | 2009-11-12 | 2009-11-12 | Method and system for controlling base station power |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101711056A true CN101711056A (en) | 2010-05-19 |
| CN101711056B CN101711056B (en) | 2012-07-18 |
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| CN2009101096458A Expired - Fee Related CN101711056B (en) | 2009-11-12 | 2009-11-12 | Method and system for controlling base station power |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118393394A (en) * | 2024-06-28 | 2024-07-26 | 青岛元通电子有限公司 | Fault assessment method based on high-voltage output power supply |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH08307182A (en) * | 1995-04-27 | 1996-11-22 | Sony Corp | Power control circuit |
| US6374116B1 (en) * | 1999-06-14 | 2002-04-16 | Qualcomm Incorporated | Adjusting maximum transmit power to maintain constant margin for adjacent channel power rejection |
-
2009
- 2009-11-12 CN CN2009101096458A patent/CN101711056B/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN118393394A (en) * | 2024-06-28 | 2024-07-26 | 青岛元通电子有限公司 | Fault assessment method based on high-voltage output power supply |
| CN118393394B (en) * | 2024-06-28 | 2024-09-13 | 青岛元通电子有限公司 | Fault assessment method based on high-voltage output power supply |
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| CN101711056B (en) | 2012-07-18 |
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