CN110913470A - Radio data transmission radio station transmitting power loop control method and radio data transmission radio station - Google Patents
Radio data transmission radio station transmitting power loop control method and radio data transmission radio station Download PDFInfo
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- CN110913470A CN110913470A CN201911002698.XA CN201911002698A CN110913470A CN 110913470 A CN110913470 A CN 110913470A CN 201911002698 A CN201911002698 A CN 201911002698A CN 110913470 A CN110913470 A CN 110913470A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W52/00—Power management, e.g. TPC [Transmission Power Control], power saving or power classes
- H04W52/04—TPC
- H04W52/06—TPC algorithms
Abstract
The invention provides a loop control method for transmitting power of a wireless data transmission radio station and the wireless data transmission radio station, and belongs to the technical field of communication. The loop control method of the transmitting power of the wireless data transmission radio station comprises the steps that a directional coupler is coupled with the transmitting power output by a transmitter and inputs the transmitting power into a detector; the detector detects the input transmitting power and outputs a detection voltage value; the analog-to-digital converter converts the detection voltage value into a feedback voltage value; the controller obtains the feedback voltage value and a reference voltage value of the emitter under the emission power, compares the feedback voltage value with the reference voltage value of the emitter under the emission power, and adjusts the emission power of the emitter if the feedback voltage value is inconsistent with the reference voltage value so that the difference value of the feedback voltage value and the reference voltage value is in a preset range. The loop control method for the transmitting power of the wireless data transmission radio station and the wireless data transmission radio station can realize continuous adjustment of the transmitting power of the wireless data transmission radio station under wide bandwidth.
Description
Technical Field
The invention relates to the technical field of communication, in particular to a loop control method for transmitting power of a wireless data transmission radio station and the wireless data transmission radio station.
Background
Currently, with the wide application of wireless communication and the rapid development of network technology, various wireless data transmission applications are emerging, and the demand for better functions and performance of wireless data transmission stations is also increasing.
However, the communication bandwidth of the current wireless data transfer station is narrow and the wireless transmission power is single. Therefore, how to realize stable output of continuously adjustable transmission power in a broadband wireless data transmission station to meet the current increasing user application requirements is a topic worthy of research currently.
Disclosure of Invention
In order to solve the above technical problem or at least partially solve the above technical problem, embodiments of the present invention provide a loop control method for transmission power of a wireless data transmission station and a wireless data transmission station, which can enable the wireless data transmission station to achieve stable output of continuously adjustable transmission power under a wide bandwidth.
In a first aspect, an embodiment of the present invention provides a method for controlling a transmit power loop of a wireless data transmission station, including:
the directional coupler is coupled with the transmitting power output by the transmitter and inputs the transmitting power into the detector;
the detector detects the input transmitting power and outputs a detection voltage value;
the analog-to-digital converter converts the detection voltage value into a feedback voltage value;
and the controller acquires the feedback voltage value and a reference voltage value of the transmitter under the transmitting power, compares the feedback voltage value with the reference voltage value of the transmitter under the transmitting power, and adjusts the transmitting power of the transmitter if the feedback voltage value is inconsistent with the reference voltage value so as to enable the difference value of the feedback voltage value and the reference voltage value to be within a preset range.
Further, the controller obtains a reference voltage value of the transmitter at the transmit power, including:
acquiring a working frequency point of the transmitter and transmitting power output by the transmitter under the working frequency point;
acquiring a characteristic reference voltage value when the transmitter outputs first transmission power under the working frequency point and a characteristic reference voltage value when the transmitter outputs second transmission power under the working frequency point;
and calculating to obtain the reference voltage value of the emitter when the emitter outputs the emission power under the working frequency point according to three points on the same straight line, wherein the reference voltage value of the emitter when the emitter outputs the emission power under the working frequency point, the characteristic reference voltage value of the first emission power when the emitter outputs the first emission power under the working frequency point, and the characteristic reference voltage value of the second emission power when the emitter outputs the second emission power under the working frequency point.
Further, the controller obtains a reference voltage value of the transmitter at the transmit power, including:
acquiring a working frequency point of the transmitter and transmitting power output by the transmitter under the working frequency point;
acquiring a characteristic reference voltage value when the transmitter outputs the transmitting power under a first working frequency point and a characteristic reference voltage value when the transmitter outputs the transmitting power under a second working frequency point;
and calculating to obtain the reference voltage value of the emitter when the emitter outputs the emission power under the working frequency point according to three points on the same straight line, wherein the reference voltage value of the emitter when the emitter outputs the emission power under the working frequency point, the characteristic reference voltage value of the emitter when the first working frequency point and the emitter output the emission power under the first working frequency point, and the characteristic reference voltage value of the emitter when the second working frequency point and the emitter output the emission power under the second working frequency point.
Further, the controller obtains a reference voltage value of the transmitter at the transmit power, including:
dividing the whole frequency band of the data transmission radio station into a plurality of small frequency bands;
acquiring a working frequency point of the transmitter and transmitting power output by the transmitter under the working frequency point;
if the two endpoints of the small frequency band where the working frequency point of the transmitter is located are divided into a first working frequency point and a second working frequency point, acquiring a middle reference voltage value when the transmitter outputs the transmission power at the first working frequency point and a middle reference voltage value when the transmitter outputs the transmission power at the second working frequency point;
and calculating to obtain the reference voltage value of the emitter when the emitter outputs the emission power under the working frequency point according to the working frequency point of the emitter and the reference voltage value of the emitter when the emission power is output under the working frequency point, the first working frequency point and the middle reference voltage value of the emitter when the emission power is output at the first working frequency point, and the second working frequency point and the middle reference voltage value of the emitter when the emission power is output at the second working frequency point.
Further, the obtaining the intermediate reference voltage value includes:
acquiring a working frequency point and transmitting power of the transmitter when the transmitter works at the intermediate reference voltage value;
acquiring a characteristic reference voltage value when the transmitter outputs first transmission power under the working frequency point and a characteristic reference voltage value when the transmitter outputs second transmission power under the working frequency point;
and calculating to obtain the intermediate reference voltage value according to three points on the same straight line, wherein the three points are the transmission power and the intermediate reference voltage value, the first transmission power and a characteristic reference voltage value when the transmitter outputs the first transmission power under the working frequency point, and the second transmission power and a characteristic reference voltage value when the transmitter outputs the second transmission power under the working frequency point.
Further, the characteristic reference voltage value is obtained through actual measurement debugging.
Further, the obtaining the characteristic reference voltage value through actual measurement debugging includes:
acquiring the working frequency point and the transmitting power of the transmitter;
the controller controls the transmitter to output the transmitting power under the working frequency point;
the directional coupler is coupled with the transmitting power and inputs the transmitting power to the detector;
the detector detects the input transmitting power and outputs a detection voltage value;
the analog-to-digital converter converts the detection voltage value into a feedback voltage value;
the controller acquires the feedback voltage value as the characteristic reference voltage value.
Further, the directional coupler couples the transmission power output by the transmitter and inputs the transmission power to the detector, and comprises:
the directional coupler couples the transmitting power output by the transmitter and divides the voltage by an impedance circuit to be input into the detector.
In a second aspect, an embodiment of the present invention provides a wireless data transmission station, including:
the transmitter is used for outputting transmitting power at the working frequency point;
a directional coupler for coupling the transmit power output by the transmitter;
the detector is used for detecting the transmission power after the directional coupler is coupled and outputting a detected voltage value;
the analog-to-digital converter is used for converting the detection voltage value into a feedback voltage value;
and the controller is used for receiving the feedback voltage value, comparing the feedback voltage value with a reference voltage value of the emitter when the emitter outputs the emission power at the working frequency point, and regulating and controlling the emission power of the emitter when the feedback voltage value is inconsistent with the reference voltage value so as to enable the difference value of the feedback voltage value and the reference voltage value to be within a preset range.
The invention has the beneficial effects that:
the invention discloses a loop control method of wireless data transmission radio station transmitting power, which comprises the following steps: the directional coupler is coupled with the transmitting power output by the transmitter and inputs the transmitting power into the detector; the detector detects the input transmitting power and outputs a detection voltage value; the analog-to-digital converter converts the detection voltage value into a feedback voltage value; and the controller acquires the feedback voltage value and a reference voltage value of the transmitter under the transmitting power, compares the feedback voltage value with the reference voltage value of the transmitter under the transmitting power, and adjusts the transmitting power of the transmitter if the feedback voltage value is inconsistent with the reference voltage value so as to enable the difference value of the feedback voltage value and the reference voltage value to be within a preset range. According to the loop control method of the transmitting power of the wireless data transmission radio station, the transmitting power of the wireless data transmission radio station can be continuously adjusted under wide bandwidth.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the invention and together with the description, serve to explain the principles of the invention.
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious for those skilled in the art that other drawings can be obtained according to the drawings without inventive exercise.
FIG. 1 is a flow chart of a method for loop control of transmit power of a wireless data transfer station according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a process for acquiring a reference voltage by a controller according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of a process for acquiring a reference voltage by a controller according to an embodiment of the present invention;
FIG. 4 is a schematic diagram of a process for acquiring a reference voltage by a controller according to an embodiment of the present invention;
FIG. 5 is a schematic flow chart of a controller acquiring a characteristic reference voltage value according to an embodiment of the present invention;
fig. 6 is a schematic structural diagram of a wireless data transfer station according to an embodiment of the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present application.
Fig. 1 is a flowchart illustrating a radio data transmission station transmission power loop control method according to an embodiment of the present invention, and referring to fig. 1, the radio data transmission station transmission power loop control method according to the embodiment of the present invention includes:
s100, coupling the transmitting power output by the transmitter by the directional coupler, and inputting the transmitting power into a detector;
s200, detecting the input transmitting power and outputting a detection voltage value by a detector;
s300, converting the detection voltage value into a feedback voltage value by an analog-to-digital converter;
and S400, the controller acquires the feedback voltage value and a reference voltage value of the transmitter under the transmitting power, compares the feedback voltage value with the reference voltage value of the transmitter under the transmitting power, and if the feedback voltage value is inconsistent with the reference voltage value, the controller adjusts the transmitting power of the transmitter so that the difference value between the feedback voltage value and the reference voltage value is within a preset range.
According to the loop control method of the transmitting power of the wireless data transmission station, after the directional coupler is coupled with the transmitting power output by the transmitter, the coupled transmitting power is input into the detector, the detector outputs the detection voltage value according to the coupled transmitting power, the analog-digital converter converts the detection voltage value into the feedback voltage value, the controller obtains and compares the feedback voltage value with the reference voltage value of the transmitter under the transmitting power, the transmitting power of the transmitter is adjusted according to the difference value of the feedback voltage value and the reference voltage value, when the feedback voltage value is too large or too small, the corresponding too large or too small of the transmitting power value is indicated, at the moment, the controller adjusts the transmitting power of the transmitter, the corresponding reducing or increasing of the transmitting power of the transmitter is achieved, and therefore the continuous adjustment of the transmitting power of the wireless data transmission station is achieved.
Optionally, in step S100, after the directional coupler couples the transmission power output by the transmitter, the coupled transmission power is input to the detector through voltage division by the impedance circuit, and the voltage amplitude of the detector is reduced by the impedance circuit, so as to prevent the voltage of the detector from exceeding the detection range.
Fig. 2 is a schematic diagram illustrating a flow of acquiring the reference voltage by the controller, and referring to fig. 2, the flow of acquiring the reference voltage by the controller includes:
s410, acquiring a working frequency point of the transmitter and transmitting power output by the transmitter under the working frequency point;
s411, acquiring a characteristic reference voltage value when the transmitter outputs a first transmission power at the working frequency point and a characteristic reference voltage value when the transmitter outputs a second transmission power at the working frequency point;
s412, calculating to obtain a reference voltage value when the emitter outputs the emission power at the working frequency point according to three points on the same straight line, wherein the reference voltage value when the emission power is output by the emitter at the working frequency point, the characteristic reference voltage value when the first emission power is output by the emitter at the working frequency point, and the characteristic reference voltage value when the second emission power is output by the emitter at the working frequency point.
In the embodiment of the invention, the detector has linear V/V or linear dB output response, or the detector has similar linear V/V or similar linear dB output response, so that the transmitting power and the reference voltage value are on the same straight line when the transmitter is at the same working frequency point. Therefore, when the transmitters are located at the same working frequency point, the characteristic reference voltage values of the transmitters under two different transmitting powers can be preset and obtained, and the reference characteristic voltages of the transmitters under other transmitting powers at the working frequency point can be calculated and obtained according to the two different preset characteristic reference voltage values.
Optionally, under the same working frequency point, a characteristic reference voltage value Vmax of the transmitter at the highest transmission power Pmax and a characteristic reference voltage value Vmin of the transmitter at the lowest transmission power Pmin are preset to be obtained, and a reference voltage value V when the transmitter outputs transmission power P (the value of P is different from Pmax and Pmin) at the working frequency point is obtained, where V ═ Vmin + (P-Pmin) (Vmax-Vmin)/(Pmax-Pmin).
FIG. 3 is a schematic diagram of a flow chart for a controller to obtain a reference voltage value; referring to fig. 3, the process of acquiring the reference voltage by the controller includes:
s420, acquiring a working frequency point of the transmitter and transmitting power output by the transmitter under the working frequency point;
s421, obtaining a characteristic reference voltage value when the transmitter outputs the transmission power at a first working frequency point and a characteristic reference voltage value when the transmitter outputs the transmission power at a second working frequency point;
s422, calculating to obtain the reference voltage value of the emitter when the emitter outputs the emission power under the working frequency point according to the working frequency point and the reference voltage value of the emitter when the emitter outputs the emission power under the working frequency point, the characteristic reference voltage value of the emitter when the first working frequency point and the emitter output the emission power under the first working frequency point, and the characteristic reference voltage value of the emitter when the second working frequency point and the emitter output the emission power under the second working frequency point.
In the embodiment of the invention, the detector has linear V/V or linear dB output response, or the detector has similar linear V/V or similar linear dB output response, so that the working frequency point of the transmitter and the reference voltage value are on the same straight line under the same transmission power. Therefore, when the transmitters output the same transmission power, the characteristic reference voltage values of the transmitters at two different working frequency points can be preset and obtained, and the reference characteristic voltages of the transmitters at other working frequency points can be calculated and obtained according to the preset two different characteristic reference voltage values under the transmission power.
Optionally, under the same transmission power, a characteristic reference voltage value V1 of the transmitter at the M1 frequency point and a characteristic reference voltage value V2 of the transmitter at the M2 frequency point are preset and obtained, and then a reference voltage value V of the transmitter at the M frequency point (the M frequency point is different from the M1 frequency point, and the M2 frequency point is different from three frequency points) is obtained through calculation, where V is V1+ (M-M1) (V1-V2)/(M1-M2).
Fig. 4 is a schematic diagram illustrating a flow of acquiring the reference voltage value by the controller, and referring to fig. 4, the flow of acquiring the reference voltage value by the controller includes:
s430, dividing the whole frequency band of the data transmission radio station into a plurality of small frequency bands;
s431, acquiring a working frequency point of the transmitter and the transmitting power output by the transmitter under the working frequency point;
s432, if two end points of the small frequency band where the working frequency point of the transmitter is located are divided into a first working frequency point and a second working frequency point, acquiring a middle reference voltage value when the transmitter outputs the transmission power at the first working frequency point and a middle reference voltage value when the transmitter outputs the transmission power at the second working frequency point;
and S433, calculating to obtain a reference voltage value when the emitter outputs the emission power at the working frequency point according to the working frequency point of the emitter and the reference voltage value when the emitter outputs the emission power at the working frequency point, the first working frequency point and the middle reference voltage value when the emitter outputs the emission power at the first working frequency point, and the second working frequency point and the middle reference voltage value when the emitter outputs the emission power at the second working frequency point, wherein the reference voltage value is on the same straight line.
In the embodiment of the invention, the detector has the characteristic that the frequency response is kept flat in a wider frequency range, and the flatness can be considered to be linearly changed in a smaller frequency range, therefore, the whole frequency band of the data transmission radio station is firstly divided into a plurality of small frequency bands, when the reference voltage of the transmitter under a certain frequency point and a certain transmitting power is calculated and obtained, the working frequency point of the transmitter is firstly judged to be positioned between the small frequency bands, two end points (a first working frequency point and a second working frequency point) of the small frequency bands are obtained to calculate and obtain the reference voltage of the transmitter, a characteristic reference voltage value when the transmitter outputs the first transmitting power under the first working frequency point and a characteristic reference voltage value when the transmitter outputs the second transmitting power under the second working frequency point, and a characteristic reference voltage value when the transmitter outputs the first transmitting power and a characteristic reference voltage value when the transmitter outputs the second transmitting power under the second working frequency point are preset and obtained, the method for calculating the reference voltage value of the transmitter under the certain transmission power output at the first working frequency point (the middle reference voltage value of the transmitter under the transmission power output at the first working frequency point) is obtained by calculating the characteristic reference voltage value of the transmitter under the first transmission power output at the first working frequency point and the characteristic reference voltage value of the transmitter under the second transmission power output at the second working frequency point (the middle reference voltage value of the transmitter under the transmission power output at the second working frequency point) and the characteristic reference voltage value of the transmitter under the first transmission power output at the first working frequency point and the characteristic reference voltage value of the transmitter under the second transmission power output at the second working frequency point, and the calculating method can refer to the embodiment shown in the above figure 2, after obtaining the two middle reference voltage values, then, the reference voltage value of the transmitter at the certain operating frequency point and at the certain transmission power is calculated and obtained according to the correlation between the frequency point and the reference voltage under the same transmission power, and the calculation scheme may refer to the embodiment shown in fig. 3.
Watch 1
In an embodiment of the present invention, referring to table one, the whole frequency band of the data-transmission radio station is divided into n frequency bands according to the frequency points from M0 to Mn, and the reference voltage value Vmax of the frequency points from M0 to Mn at the maximum transmission power Pmax and the reference voltage value Vmin of the frequency points from M0 at the minimum transmission power Pmin are obtained, so as to obtain the reference voltage value V of the transmitter at the frequency point from M and the transmission power P through calculation.
The calculation process of the reference voltage value V is as follows:
firstly, determining a small frequency band in which an M frequency point is positioned, and acquiring two end points of the small frequency band, namely a first working frequency point My and a second working frequency point Mz (y, z € (0, n));
then, calculating and obtaining the middle reference voltage value Vy of the first working frequency point My and the middle reference voltage value Vz of the second working frequency point Mz when the output transmission power of the transmitter is P, wherein,
Vy＝Vminy+(P-Pminy)*(Vmaxy-Vminy)/(Pmaxy-Pminy)；
Vz＝Vminz+(P-Pminz)*(Vmaxz-Vminz)/(Pmaxz-Pminz)；
and finally, calculating and obtaining a reference voltage value V of the transmitter at the frequency point M and when the transmitter outputs the transmitting power P, wherein,
V＝Vy+(M-My)*(Vy-Vz)/(My-Mz)。
in the embodiment of the invention, because the detector has the characteristic that the frequency response is kept flat in a wider frequency range, and the flatness can be considered to be linearly changed in a smaller frequency range, the reference voltage value of the transmitter at any frequency point and at any transmitting power can be calculated and obtained in an optional range by utilizing the characteristic, so that the transmitting power output by the transmitter can be adjusted, meanwhile, the output power of the transmitter can be adjusted under the condition of wide bandwidth by the radio data transmission station, and the radio data transmission station can output continuously adjustable and stable transmitting power under the wide bandwidth.
In the embodiment of the present invention, in the embodiment shown in fig. 2 and 3, the detector has a linear V/V or linear dB output response, or the detector has a similar linear V/V or similar linear dB output response, and in the embodiment shown in fig. 4, the detector also has a characteristic that the frequency response is kept flat in a wider frequency range. Optionally, the detector is a root mean square power detector, which not only has a linear V/V or linear dB output response, but also has a characteristic that the frequency response is kept flat in a wide frequency range, and the flatness can be considered to be linearly changed in a small frequency range.
In the embodiment of the invention, the characteristic reference voltage value is obtained through actual measurement debugging.
Fig. 5 is a schematic flowchart illustrating an embodiment of obtaining a characteristic reference voltage value according to the present invention, and referring to fig. 5, a process of obtaining the characteristic reference voltage value by actual measurement and debugging includes:
s500, acquiring a working frequency point and transmitting power of a transmitter;
s510, the controller controls the transmitter to output the transmitting power under the working frequency point;
s520, coupling the transmitting power by a directional coupler, and inputting the transmitting power into a detector;
s530, the detector detects the input transmitting power and outputs a detection voltage value;
s540, the analog-to-digital converter converts the detection voltage value into a feedback voltage value;
and S550, the controller acquires the feedback voltage value as the characteristic reference voltage value.
In the embodiment of the invention, the characteristic reference voltage value of the emitter at some specific frequency points and specific emission power is obtained according to the flow of obtaining the characteristic reference voltage value, and then the reference voltage value of the emitter at any frequency point and any emission power which can be selected by working can be obtained through calculation.
An embodiment of the present invention further provides a wireless data transmission radio station, referring to fig. 6, which shows a schematic structural diagram of the wireless data transmission radio station, and as shown in fig. 6, the wireless data transmission radio station includes:
a transmitter 600 for outputting transmission power at a working frequency point;
a directional coupler 610 for coupling the transmission power output by the transmitter 600;
a detector 620 for detecting the transmission power coupled by the directional coupler 610 and outputting a detected voltage value;
an analog-to-digital converter 630 for converting the detected voltage value into a feedback voltage value;
and the controller 640 is configured to receive the feedback voltage value, compare the feedback voltage value with a reference voltage value of the transmitter 600 when the transmission power is output at the working frequency point, and regulate and control the transmission power of the transmitter 600 when the feedback voltage value is inconsistent with the reference voltage value, so that a difference between the feedback voltage value and the reference voltage value is within a preset range.
Optionally, the detector 620 is connected in series with an impedance circuit (not shown) so that the directional coupler 610 divides the coupled transmission power and inputs the divided transmission power to the detector 620, thereby reducing the voltage amplitude of the detector 620.
The directional coupler 610 is located at an antenna end, a part of the coupled transmission power of the directional coupler 610 is input to the antenna for the operation of the antenna, and a part of the coupled transmission power is input to the detector 620 for obtaining a feedback voltage value.
Optionally, the detector 620 is a rms power detector.
Compared with the existing wireless data transmission radio station, the wireless data transmission radio station provided by the embodiment of the invention can realize continuous adjustment of the transmitting power under the condition of wide bandwidth.
It is noted that, in this document, relational terms such as "first" and "second," and the like, may be used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The foregoing are merely exemplary embodiments of the present invention, which enable those skilled in the art to understand or practice the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A method for controlling a loop of a transmit power of a wireless data transfer station, comprising:
the directional coupler is coupled with the transmitting power output by the transmitter and inputs the transmitting power into the detector;
the detector detects the input transmitting power and outputs a detection voltage value;
the analog-to-digital converter converts the detection voltage value into a feedback voltage value;
and the controller acquires the feedback voltage value and a reference voltage value of the transmitter under the transmitting power, compares the feedback voltage value with the reference voltage value of the transmitter under the transmitting power, and adjusts the transmitting power of the transmitter if the feedback voltage value is inconsistent with the reference voltage value so as to enable the difference value of the feedback voltage value and the reference voltage value to be within a preset range.
2. The method of claim 1, wherein the controller obtains a reference voltage value of the transmitter at the transmit power, comprising:
acquiring a working frequency point of the transmitter and transmitting power output by the transmitter under the working frequency point;
acquiring a characteristic reference voltage value when the transmitter outputs first transmission power under the working frequency point and a characteristic reference voltage value when the transmitter outputs second transmission power under the working frequency point;
and calculating to obtain the reference voltage value of the emitter when the emitter outputs the emission power under the working frequency point according to three points on the same straight line, wherein the reference voltage value of the emitter when the emitter outputs the emission power under the working frequency point, the characteristic reference voltage value of the first emission power when the emitter outputs the first emission power under the working frequency point, and the characteristic reference voltage value of the second emission power when the emitter outputs the second emission power under the working frequency point.
3. The method of claim 1, wherein the controller obtains a reference voltage value of the transmitter at the transmit power, comprising:
acquiring a working frequency point of the transmitter and transmitting power output by the transmitter under the working frequency point;
acquiring a characteristic reference voltage value when the transmitter outputs the transmitting power under a first working frequency point and a characteristic reference voltage value when the transmitter outputs the transmitting power under a second working frequency point;
and calculating to obtain the reference voltage value of the emitter when the emitter outputs the emission power under the working frequency point according to three points on the same straight line, wherein the reference voltage value of the emitter when the emitter outputs the emission power under the working frequency point, the characteristic reference voltage value of the emitter when the first working frequency point and the emitter output the emission power under the first working frequency point, and the characteristic reference voltage value of the emitter when the second working frequency point and the emitter output the emission power under the second working frequency point.
4. The method of claim 1, wherein the controller obtains a reference voltage value of the transmitter at the transmit power, comprising:
dividing the whole frequency band of the data transmission radio station into a plurality of small frequency bands;
acquiring a working frequency point of the transmitter and transmitting power output by the transmitter under the working frequency point;
if the two endpoints of the small frequency band where the working frequency point of the transmitter is located are divided into a first working frequency point and a second working frequency point, acquiring a middle reference voltage value when the transmitter outputs the transmission power at the first working frequency point and a middle reference voltage value when the transmitter outputs the transmission power at the second working frequency point;
and calculating to obtain the reference voltage value of the emitter when the emitter outputs the emission power under the working frequency point according to the working frequency point of the emitter and the reference voltage value of the emitter when the emission power is output under the working frequency point, the first working frequency point and the middle reference voltage value of the emitter when the emission power is output at the first working frequency point, and the second working frequency point and the middle reference voltage value of the emitter when the emission power is output at the second working frequency point.
5. The method of claim 4, wherein obtaining the intermediate reference voltage value comprises:
acquiring a working frequency point and transmitting power of the transmitter when the transmitter works at the intermediate reference voltage value;
acquiring a characteristic reference voltage value when the transmitter outputs first transmission power under the working frequency point and a characteristic reference voltage value when the transmitter outputs second transmission power under the working frequency point;
and calculating to obtain the intermediate reference voltage value according to three points on the same straight line, wherein the three points are the transmission power and the intermediate reference voltage value, the first transmission power and a characteristic reference voltage value when the transmitter outputs the first transmission power under the working frequency point, and the second transmission power and a characteristic reference voltage value when the transmitter outputs the second transmission power under the working frequency point.
6. The method according to any one of claims 2 to 5, characterized in that the characteristic reference voltage value is obtained by a measured debugging.
7. The method of claim 6, wherein the obtaining the characteristic reference voltage value by measured debugging comprises:
acquiring the working frequency point and the transmitting power of the transmitter;
the controller controls the transmitter to output the transmitting power under the working frequency point;
the directional coupler is coupled with the transmitting power and inputs the transmitting power to the detector;
the detector detects the input transmitting power and outputs a detection voltage value;
the analog-to-digital converter converts the detection voltage value into a feedback voltage value;
the controller acquires the feedback voltage value as the characteristic reference voltage value.
8. A method according to any one of claims 2 to 5, wherein the detector is a RMS power detector.
9. The method of claim 1, wherein the directional coupler couples the transmit power output by the transmitter to a detector, comprising:
the directional coupler couples the transmitting power output by the transmitter and divides the voltage by an impedance circuit to be input into the detector.
10. A wireless data transfer station, comprising:
the transmitter is used for outputting transmitting power at the working frequency point;
a directional coupler for coupling the transmit power output by the transmitter;
the detector is used for detecting the transmission power after the directional coupler is coupled and outputting a detected voltage value;
the analog-to-digital converter is used for converting the detection voltage value into a feedback voltage value;
and the controller is used for receiving the feedback voltage value, comparing the feedback voltage value with a reference voltage value of the emitter when the emitter outputs the emission power at the working frequency point, and regulating and controlling the emission power of the emitter when the feedback voltage value is inconsistent with the reference voltage value so as to enable the difference value of the feedback voltage value and the reference voltage value to be within a preset range.
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| CN201911002698.XA CN110913470B (en) | 2019-10-21 | 2019-10-21 | Radio data transmission radio station transmitting power loop control method and radio data transmission radio station |
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| CN201911002698.XA CN110913470B (en) | 2019-10-21 | 2019-10-21 | Radio data transmission radio station transmitting power loop control method and radio data transmission radio station |
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