CN109492443A - A kind of reader power calibrating method and power calibration method - Google Patents

A kind of reader power calibrating method and power calibration method Download PDF

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Publication number
CN109492443A
CN109492443A CN201811427781.7A CN201811427781A CN109492443A CN 109492443 A CN109492443 A CN 109492443A CN 201811427781 A CN201811427781 A CN 201811427781A CN 109492443 A CN109492443 A CN 109492443A
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power
current
transmission power
calibration
parameter
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CN109492443B (en
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刘晓晨
夏曙东
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Beijing Polytron Technologies Inc
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Beijing Polytron Technologies Inc
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    • G—PHYSICS
    • G06—COMPUTING; CALCULATING OR COUNTING
    • G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
    • G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
    • G06K7/0095—Testing the sensing arrangement, e.g. testing if a magnetic card reader, bar code reader, RFID interrogator or smart card reader functions properly

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  • Artificial Intelligence (AREA)
  • Computer Vision & Pattern Recognition (AREA)
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Abstract

The present invention discloses a kind of reader power calibrating method and power calibration method, and calibration method includes: the current emitting voltage that reader reads transmitting radiofrequency signal；According to current emitting voltage and preset power calibration tables of data, the corresponding current transmission power of current emitting voltage is determined；If the difference of current transmission power and default transmission power is more than or equal to the first preset threshold, power is calibrated according to current transmission power and power calibration tables of data.The present invention generates power calibration tables of data by host computer in calibration process, and reader stores the power calibration tables of data.Reader is according to the power calibration tables of data complete independently calibration of power in practical applications, it is participated in without external equipments such as host computer, spectrum analyzers, without carrying out signal transmission between devices in power calibration procedure, save the time of signal transmission between devices, calibration of power error caused by signal transmission errors is avoided, the efficiency and accuracy of the reader calibration of power is improved.

Description

A kind of reader power calibrating method and power calibration method
Technical field
The invention belongs to technical field of RFID, and in particular to a kind of reader power calibrating method and power calibration side Method.
Background technique
RFID (Radio Frequency Identification, Radio Frequency Identification Technology) is a kind of twireless radio-frequency communication skill Art is mainly made of reader and transponder, and transponder generally uses passive label.When using passive label, need to read and write Device continues to provide carrier energy for labeling task and response.Carrier energy is determined by the transmission power of reader.In order to On the basis of meeting label counting required distance, the interference to human body radiation and to other equipment around is reduced, is needed to read-write Device transmission power is precisely controlled, and is calibrated to the size of transmission power.
Currently, a kind of method for calibrating reader power is provided in the related technology, comprising: control equipment is set by detection The actual emission power of standby detection reader, the difference between the actual emission power and default transmission power for detecting reader When value is greater than preset threshold, control equipment constantly changes the actual emission power of reader by preset algorithm, so that finally Actual emission power be approximately equal to default transmission power, to realize to the calibration of power of reader.
But above-mentioned the relevant technologies need to set control equipment, detection device and reader etc. are multiple in power calibration procedure Signal transmission is carried out between standby, the calibration of power is carried out by control equipment, and carrying out signal transmission between devices will waste Plenty of time, and signal loading error occurring will increase the error of the calibration of power, lead to reader power reference low efficiency, accuracy Difference.
Summary of the invention
In order to solve the above problem, the present invention provides a kind of reader power calibrating method and power calibration method, is reading and writing Pre-generated power calibration tables of data is configured on device, reader is according to power calibration tables of data complete independently function in practical application Rate calibration, participates in without the external equipments such as host computer, spectrum analyzer, save signal transmission between devices when Between, calibration of power error caused by signal transmission errors is avoided, the efficiency and accuracy of the reader calibration of power is improved.This hair It is bright that problem above is solved by the following aspects.
In a first aspect, the embodiment of the invention provides a kind of reader power calibrating methods, which comprises
Read the current emitting voltage of transmitting radiofrequency signal；
According to the current emitting voltage and preset power calibration tables of data, determine that the current emitting voltage is corresponding Current transmission power；
If the difference between the current transmission power and default transmission power is greater than or equal to the first preset threshold, root The calibration of power is carried out according to the current transmission power and the power calibration tables of data.
With reference to first aspect, the embodiment of the invention provides the first possible implementation of above-mentioned first aspect, In, it is described according to the current emitting voltage and preset power calibration tables of data, determine that the current emitting voltage is corresponding Current transmission power, comprising:
It whether inquires in preset power calibration tables of data comprising the current emitting voltage；
If it is, obtaining the corresponding current transmitting function of the current emitting voltage from the power calibration tables of data Rate；
If not, according to the current emitting voltage, obtained from the power calibration tables of data the first scalar number to Second scalar number pair, according to first scalar number to corresponding to the current emitting voltage is calculated with second scalar number Current transmission power；First scalar number to the first voltage for including be less than in the power calibration tables of data it is described current Maximum value in all voltages of emitting voltage, second scalar number are the power calibration data to the second voltage for including Greater than the minimum value in all voltages of the current emitting voltage in table.
The possible implementation of with reference to first aspect the first, the embodiment of the invention provides the of above-mentioned first aspect Two kinds of possible implementations, wherein described to be worked as described in calculating according to first scalar number to second scalar number The corresponding current transmission power of preceding emitting voltage, comprising:
According to first scalar number to second scalar number pair, calculate slope value；
According to the current transmission power and the slope value, it is corresponding that the current emitting voltage is calculated by formula (1) Current transmission power；
P=V/K ... (1)
In the formula (1), K=(Vn+1-Vn)/(Pn+1-Pn), K is the slope value, and P is the current transmitting function Rate, V are the current emitting voltage, VnIt is first scalar number to the first voltage for including, Vn+1It is fixed for described second It marks several to the second voltage for including, PnFor corresponding first power of the first voltage, Pn+1It is corresponding for the second voltage The second power.
With reference to first aspect, the embodiment of the invention provides the third possible implementation of above-mentioned first aspect, In, it is described that the calibration of power is carried out according to the current transmission power and the power calibration tables of data, comprising:
Corresponding calibration parameter pair is obtained from the power calibration tables of data according to the default transmission power；
If the difference between the current transmission power and default transmission power is greater than or equal to the second preset threshold, root The coarse adjustment parameter for including is adjusted the current transmission power according to the calibration parameter, until current transmitting adjusted Difference between power and the default transmission power is less than second preset threshold, and second preset threshold is greater than described First preset threshold；
If difference between the current transmission power and the default transmission power be less than second preset threshold and More than or equal to first preset threshold, then according to the calibration parameter to the current fine tuning parameter for including to the current hair It penetrates power to be adjusted, until the difference between current transmission power adjusted and the default transmission power is less than described the One preset threshold.
The third possible implementation with reference to first aspect, the embodiment of the invention provides the of above-mentioned first aspect Four kinds of possible implementations, wherein it is described according to the calibration parameter to the coarse adjustment parameter for including to the current transmitting function Rate is adjusted, comprising:
The current transmission power is adjusted to the coarse adjustment parameter for including according to the calibration parameter, is penetrated after reading adjustment The current emitting voltage of frequency signal；
According to the current emitting voltage adjusted and the power calibration tables of data, determine adjusted described current The corresponding current transmission power of emitting voltage；
If the difference between the current transmission power adjusted and the default transmission power is still greater than or is equal to institute The second preset threshold is stated, then returns to the step of execution adjusts the current transmission power according to the coarse adjustment parameter, until adjustment The difference between current transmission power and the default transmission power afterwards is less than second preset threshold.
The third possible implementation with reference to first aspect, the embodiment of the invention provides the of above-mentioned first aspect Five kinds of possible implementations, wherein it is described according to the calibration parameter to the current fine tuning parameter for including to the current hair Power is penetrated to be adjusted, comprising:
The current fine tuning for including is joined according to the current transmission power, the default transmission power and the calibration parameter Number, calculates new current fine tuning parameter；
The current transmission power is adjusted according to the new current fine tuning parameter, emits radiofrequency signal after reading adjustment Current emitting voltage；
According to the current emitting voltage adjusted and the power calibration tables of data, determine adjusted described current The corresponding current transmission power of emitting voltage；
If the difference between the current transmission power adjusted and the default transmission power is still greater than or is equal to institute State the first preset threshold, then return recalculate new current fine tuning parameter, until the current transmission power adjusted with Difference between the default transmission power is less than first preset threshold.
The 5th kind of possible implementation with reference to first aspect, the embodiment of the invention provides the of above-mentioned first aspect Six kinds of possible implementations, wherein described to be joined according to the current transmission power, the default transmission power and the calibration It is several to the current fine tuning parameter for including, calculate new current fine tuning parameter, comprising:
The current fine tuning for including is joined according to the current transmission power, the default transmission power and the calibration parameter Number calculates new current fine tuning parameter by formula (2)；
K1=K0*(10∧((P1-P0)/20))…(2)
In formula (2), K1For the new current fine tuning parameter, K0For current fine tuning parameter, P1For the default transmitting Power, P0For the current transmission power.
With reference to first aspect, the embodiment of the invention provides the 7th kind of possible implementation of above-mentioned first aspect, In, it is described according to the current emitting voltage and preset power calibration tables of data, determine that the current emitting voltage is corresponding Before current transmission power, further includes:
The power calibration tables of data that host computer is sent is received, the power calibration tables of data includes default transmission power, determines Mark the mapping relations of several pairs and calibration parameter pair；
Store the power calibration tables of data.
Second aspect, the embodiment of the invention provides a kind of reader power calibration methods, which comprises
The default corresponding calibration parameter pair of transmission power is generated, sends the calibration parameter to reader；
Obtain actual emission power of the reader according to the calibration parameter to transmitting radiofrequency signal；
According to the calibration parameter to, the actual emission power and the default transmission power, power calibration number is generated According to table；
The power calibration tables of data is sent to the reader, so that the reader is according to the power calibration data Table carries out the calibration of power.
In conjunction with second aspect, the embodiment of the invention provides the first possible implementation of above-mentioned second aspect, In, it is described according to the calibration parameter to, the actual emission power and default transmission power, generate power calibration tables of data, Include:
If the difference between the actual emission power and default transmission power is greater than or equal to the second preset threshold, adjust The whole calibration parameter sends the calibration parameter adjusted to the reader, so that institute to the coarse adjustment parameter for including State reader according to the calibration parameter adjusted to carry out power adjustment, until adjustment after the reader actual transmission Difference between power and the default transmission power is less than second preset threshold, and second preset threshold is greater than described First preset threshold；
If difference between the actual emission power and the default transmission power be less than second preset threshold and More than or equal to first preset threshold, then the calibration parameter is adjusted to the fine tuning parameter for including, sends institute adjusted Calibration parameter is stated to the reader, so that the reader is according to the calibration parameter adjusted to carrying out power tune Whole, the difference after adjustment between the actual emission power and the default transmission power of the reader is less than described first Preset threshold；
If the difference between the actual emission power and default transmission power obtains current less than the first preset threshold Current emitting voltage when reader transmitting radiofrequency signal by the current actual emission power of the reader and described is worked as Preceding emitting voltage forms the corresponding scalar number pair of the default transmission power, by the default transmission power, the scalar number pair And current calibration parameter is stored in power calibration tables of data correspondence.
In embodiments of the present invention, power calibration tables of data is generated by host computer in calibration process, reader storage should Power calibration tables of data.Reader is according to the power calibration tables of data complete independently calibration of power in practical applications, without upper The external equipments such as machine, spectrum analyzer participate in, without carrying out signal transmission, section between devices in power calibration procedure The time for having saved signal transmission between devices, calibration of power error caused by signal transmission errors is avoided, reading is improved Write the efficiency and accuracy of the device calibration of power.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as to the present invention Limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Fig. 1 shows a kind of hardware structure that reader power calibration method is based on provided by the embodiment of the present invention 1 Schematic diagram；
Fig. 2 shows a kind of flow diagrams of reader power calibration method provided by the embodiment of the present invention 1；
Fig. 3 shows the flow diagram of another kind reader power calibration method provided by the embodiment of the present invention 1.
Fig. 4 shows a kind of flow diagram of reader power calibrating method provided by the embodiment of the present invention 2.
Fig. 5 shows a kind of structural schematic diagram of reader calibration of power device provided by the embodiment of the present invention 3.
Fig. 6 shows a kind of structural schematic diagram of reader power calibration device provided by the embodiment of the present invention 4.
Specific embodiment
The illustrative embodiments of the disclosure are more fully described below with reference to accompanying drawings.Although showing this public affairs in attached drawing The illustrative embodiments opened, it being understood, however, that may be realized in various forms the disclosure without the reality that should be illustrated here The mode of applying is limited.It is to be able to thoroughly understand the disclosure on the contrary, providing these embodiments, and can be by this public affairs The range opened is fully disclosed to those skilled in the art.
Embodiment 1
The embodiment of the invention provides a kind of reader power calibration methods.The hardware structure that this method is based on such as Fig. 1 Shown, which includes reader, test fixture, spectrum analyzer, interchanger and host computer.Wherein, host computer passes through The network interface of interchanger is connect with reader, test fixture and spectrum analyzer respectively, is equipped on host computer for being written and read The software of device power calibration, host computer are the executing subject of the embodiment of the present invention, and host computer can be laptop or platform Formula computer etc..The network interface of test fixture is connect by Serial Port Line with reader, and test fixture connects reader by coaxial cable Antenna opening, test fixture also connect with the signal input of spectrum analyzer.According to putting up the embodiment of the present invention shown in Fig. 1 Hardware structure after, it is also necessary to coaxial cable carry out line loss measurement, with the initial power for ensuring to measure on spectrum analyzer For 0dBm.
The default transmission power of reader is usually located in certain power interval, as the power interval can for [15, 33] or [10,20] etc..The integer value that the default transmission power of reader generally takes the power interval to include.The embodiment of the present invention The method of offer is exactly using each integer power in power interval as default transmission power, to each default transmitting function Rate is calibrated respectively, generates power calibration tables of data.Then by the configuration of power calibration tables of data on reader, to realize Reader can carry out the calibration of power according to the power calibration tables of data in practical applications, improve the efficiency and standard of the calibration of power True property.
As shown in Fig. 2, this method specifically includes the following steps:
Step 101: host computer generates the default corresponding calibration parameter pair of transmission power, sends the calibration parameter to read-write Device.
Since calibration process is identical, present invention implementation for each integer power in power interval It is described in detail by taking an integer power as an example in example.Host computer chooses an integer power as read-write from power interval The default transmission power of device such as assumes that power interval is [15,33], then can choose the 15 default transmitting function as reader Rate.Host computer generates the default corresponding calibration parameter pair of transmission power, calibration parameter to including fine tuning parameter and coarse adjustment parameter, Calibration parameter pair is indicated with (K, DATT) in the embodiment of the present invention.Wherein, K indicates fine tuning parameter, the stepping of fine tuning parameter K compared with It is small, such as the stepping of K can be 0.01 or 0.05.DATT indicates coarse adjustment parameter, and the stepping of coarse adjustment parameter DATT is larger, such as DATT Stepping can be 0.1 or 0.5 etc..Host computer generates the calibration parameter to rear, by the calibration parameter to being sent to reader.
As shown in figure 3, S1: reader receives the calibration parameter pair that host computer is sent, and is penetrated according to the calibration parameter to transmitting Frequency signal.
Signal processing chip is configured in reader.Reader receives the calibration parameter of host computer transmission to rear, by this Calibration parameter to being input in signal processing chip, signal processing chip according to the calibration parameter to the current emitting voltage of determination, Emit radiofrequency signal using the current emitting voltage.
Step 102: host computer obtains actual emission power of the reader according to calibration parameter to transmitting radiofrequency signal.
When reader emits radiofrequency signal, test fixture receives the radiofrequency signal of reader transmitting, and by the vision signal It is transferred to spectrum analyzer.Spectrum analyzer goes out the current actual emission power of reader according to the rf signal analysis.It is upper Machine reads the actual emission power from spectrum analyzer.
Step 103: host computer, to, actual emission power and default transmission power, generates power according to above-mentioned calibration parameter Calibration data table.
As shown in figure 3, S2: when host computer reads the actual emission power, calculating the actual emission power and default hair The difference between power is penetrated, judges the difference whether less than the first preset threshold, if so, thening follow the steps S3；If it is not, then Execute step S6.S3: host computer reads current emitting voltage from reader, by current actual emission power and current transmitting electricity Pressure forms the default corresponding scalar number pair of transmission power.S4: host computer is corresponding by default transmission power, the default transmission power Scalar number pair and calibration parameter at this time are stored in power calibration tables of data correspondence.S5: judge whether deposit in power interval In the default transmission power not yet calibrated, if so, S6 is thened follow the steps, if not, thening follow the steps 104.S6: from power area Between in reselect a default transmission power, return step 101 starts to execute.
When reselecting a default transmission power from power interval, what can not yet be calibrated from power interval is multiple An integer power is randomly choosed in integer power as default transmission power.First can also be selected to preset in a step 101 The lower limit value of power interval is selected when transmission power, selecting again later can be by current default transmitting when presetting transmission power Power adds one, until upper limit value of the final default transmission power equal to power interval, completes each power in power interval The corresponding power calibration tables of data of reader is generated after scale operation, then executes step 104.It can also select in a step 101 The upper limit value of power interval is selected when selecting the first default transmission power, it can will be current when selecting default transmission power again later Default transmission power subtract one, until final default transmission power be equal to power interval lower limit value, complete power interval in The corresponding power calibration tables of data of reader is generated after the scale operation of each power, then executes step 104.
The first preset threshold is provided in this bright embodiment, the first preset threshold is the minimum error values allowed, such as first Preset threshold is 0.01 or 0.02 etc..If the difference is approximately considered the current practical hair of reader less than the first preset threshold It is equal with default transmission power to penetrate power, reads current emitting voltage from reader at this time, by current actual emission power with Current emitting voltage forms the default corresponding scalar number pair of transmission power.Host computer is by default transmission power, the default transmitting function The corresponding scalar number pair of rate and above-mentioned calibration parameter are stored in power calibration tables of data correspondence.
For example, it is assumed that default transmission power is 15, the default corresponding calibration parameter of transmission power 15 is to (K, DATT) (0.01,0.5), current actual emission power are P0, current emitting voltage is V0, then the default transmission power 15 is corresponding fixed It marks several to for (P0, V0).Host computer is by default transmission power 15, its corresponding scalar number to (P0, V0) and calibration parameter pair (0.01,0.5) is stored in power calibration tables of data as shown in Table 1.
Table 1
Default transmission power Scalar number pair Calibration parameter pair
15 (P0, V0) (0.01,0.5)
… … …
If difference between the actual emission power that host computer is read and default transmission power is greater than or equal to above-mentioned the One preset threshold then has big difference between actual emission power and default transmission power, needs to adjust actual emission power It is whole.Coarse adjustment and fine tuning two ways are divided into the adjustment of power in the embodiment of the present invention, the stepping that coarse adjustment adjusts every time is larger, just Default transmission power can be quickly approached in the actual emission power of reader.The stepping that fine tuning adjusts every time is smaller, so as to Actual emission power is fine-tuned when being not much different with default transmission power, so that it is pre- to be approximately equal to actual emission power If transmission power.
The second preset threshold is provided in the embodiment of the present invention, the second preset threshold is greater than the first preset threshold, if the One preset threshold is 0.01, then the second preset threshold can be 0.5 or 1 etc..If actual emission power and default transmission power it Between difference less than the second preset threshold and be greater than or equal to the first preset threshold, then directly to the actual emission power of reader Fine tuning is carried out, until being adjusted to the difference between actual emission power and default transmission power less than the first preset threshold.If practical Difference between transmission power and default transmission power is greater than or equal to the second preset threshold, then first to the actual transmission of reader Power carries out coarse adjustment, when the difference being adjusted between actual emission power and default transmission power less than the second preset threshold and is greater than Or when being equal to the first preset threshold, then fine tuning is carried out to the actual emission power of reader, is adjusted to actual emission power and presets Until difference between transmission power is less than the first preset threshold.
Specifically as shown in figure 3, S7: host computer judges whether the difference between actual emission power and default transmission power is big In or be equal to the second preset threshold, if so, thening follow the steps S8；If not, thening follow the steps S11.S8: in host computer adjustment Calibration parameter is stated to the coarse adjustment parameter for including, sends calibration parameter adjusted to reader.
When difference between actual emission power and default transmission power is greater than or equal to the second preset threshold, host computer It needs to be adjusted the coarse adjustment parameter for including calibration parameter.Specifically, the calibration parameter that host computer will generate in step 101 Including coarse adjustment parameter add default value, generate new coarse adjustment parameter, the fine tuning for including by the calibration parameter in step 101 is joined Number forms new calibration parameter with the new coarse adjustment parameter generated.Wherein, default value can be 1 or 2 etc., if step 101 In preset the corresponding calibration parameter of transmission power to for (K, DATT), then the new calibration parameter generated is to can be (K, DATT+ 2).Host computer is by the new calibration parameter of generation to being sent to reader.
S9: reader receives the calibration parameter pair adjusted that host computer is sent, according to calibration parameter adjusted to hair Penetrate radiofrequency signal.
Reader receives the new calibration parameter of host computer transmission to rear, by the new calibration parameter to being input to signal Handle in chip, signal processing chip according to the new calibration parameter to redefining current emitting voltage, using redefining Current emitting voltage emit radiofrequency signal.
S10: host computer obtains the actual emission power of the radiofrequency signal of reader transmitting at this time, calculates the actual emission power With the difference between default transmission power, judge whether the difference is still greater than or is equal to the second preset threshold, if it is, returning Execute step S8；If not, even the difference less than the second preset threshold and is greater than or equal to the first preset threshold, then step is executed Rapid S11.
S11: host computer adjusts above-mentioned calibration parameter to the fine tuning parameter for including, and sends calibration parameter adjusted to reading Write device.
Difference between actual emission power and default transmission power is less than the second preset threshold and is greater than or equal to the When one preset threshold, host computer needs to be adjusted the fine tuning parameter for including above-mentioned calibration parameter.Specifically, host computer root According to the actual emission power of current read-write device, default transmission power and above-mentioned calibration parameter to the current fine tuning parameter for including, New fine tuning parameter is calculated by following formula (2)；
K1=K0*(10∧((P1-P0)/20))…(2)
In formula (2), K1For new fine tuning parameter, K0It is above-mentioned calibration parameter to the current fine tuning parameter for including, P1 To preset transmission power, P0For the current actual emission power of reader.
After calculating new fine tuning parameter by above-mentioned formula (2), the calibration parameter after being adjusted is to (K1, DATT), By calibration parameter adjusted to being sent to reader.
S12: reader receives the calibration parameter pair adjusted that host computer is sent, according to calibration parameter adjusted to hair Penetrate radiofrequency signal.
Reader receives the new calibration parameter of host computer transmission to rear, by the new calibration parameter to being input to signal Handle in chip, signal processing chip according to the new calibration parameter to redefining current emitting voltage, using redefining Current emitting voltage emit radiofrequency signal.
S13: host computer obtains the actual emission power of the radiofrequency signal of reader transmitting at this time, calculates the actual emission power With the difference between default transmission power, judge whether the difference is still less than the second preset threshold and default more than or equal to first Threshold value executes S11 if it is, returning；If not, the even difference, which less than the first preset threshold, then jumps, executes step S3.
Default transmission power for each integer for including in power interval, all in accordance with above-mentioned steps operation in power Each default transmission power and each default corresponding scalar number pair of transmission power and calibration parameter are stored in calibration data table It is right.Each the default corresponding above- mentioned information of transmission power just generate the corresponding power calibration tables of data of reader later for storage.
Step 104: host computer sends power calibration tables of data to reader, so that reader is according to power calibration tables of data Carry out the calibration of power.
As shown in figure 3, S14: reader receives the power calibration tables of data that host computer is sent, and stores the power calibration data Table, and the calibration of power is carried out according to the power calibration tables of data in practical applications.
It in embodiments of the present invention, can also be according to fixed before power calibration tables of data is sent to reader by host computer Mark it is several the sequence of the power for including from small to large or from big to small is ranked up each list item in power calibration tables of data, Power calibration tables of data after sequence is sent to reader.
In embodiments of the present invention, power calibration tables of data is generated by host computer in calibration process, reader storage should Power calibration tables of data.Reader is according to the power calibration tables of data complete independently calibration of power in practical applications, without upper The external equipments such as machine, spectrum analyzer participate in, without carrying out signal transmission, section between devices in power calibration procedure The time for having saved signal transmission between devices, calibration of power error caused by signal transmission errors is avoided, reading is improved Write the efficiency and accuracy of the device calibration of power.
Embodiment 2
The embodiment of the present invention provides a kind of reader power calibrating method, using being pre-configured in reader practical application Power calibration tables of data carry out the calibration of power in real time, host computer, test fixture and frequency spectrum are not necessarily in power calibration procedure The participation of the external equipments such as analyzer fully relies on reader itself and realizes the calibration of power, substantially increases the effect of the calibration of power Rate and accuracy.
Above-mentioned power calibration tables of data is generated on host computer in the calibration process shown in embodiment 1, in this hair In bright embodiment, reader receives the power calibration tables of data that host computer is sent, which includes default transmitting The mapping relations of power, scalar number pair and calibration parameter pair.Reader stores the power calibration tables of data, sharp in a calibration process The calibration of power is carried out with the power calibration tables of data.
Referring to fig. 4, this method specifically includes the following steps:
Step 201: reader reads the current emitting voltage of transmitting radiofrequency signal.
In practical applications, reader persistently emits radiofrequency signal, and reader reads the current of own transmission radiofrequency signal Emitting voltage.
Step 202: reader determines current emitting voltage according to current emitting voltage and preset power calibration tables of data Corresponding current transmission power.
Specifically, it whether inquires in preset power calibration tables of data comprising current emitting voltage.If it is, from power The corresponding current transmission power of current emitting voltage is obtained in calibration data table.If not, according to current emitting voltage, from power Obtained in calibration data table the first scalar number to and the second scalar number pair, according to the first scalar number to and the second scalar number to calculating The corresponding current transmission power of current emitting voltage.Wherein, the first scalar number is power calibration data to the first voltage for including Less than the maximum value in all voltages of current emitting voltage in table, the second scalar number is power calibration to the second voltage for including Greater than the minimum value in all voltages of current emitting voltage in tables of data.
When calculating the corresponding current transmission power of current emitting voltage, first according to the first scalar number to and the second calibration It is several right, calculate slope value；According to current transmission power and slope value, work as by the way that the current emitting voltage of formula (1) calculating is corresponding Preceding transmission power；
P=V/K ... (1)
In formula (1), K=(Vn+1-Vn)/(Pn+1-Pn), K is slope value, and P is current transmission power, and V is current transmitting Voltage, VnIt is the first scalar number to the first voltage for including, Vn+1It is the second scalar number to the second voltage for including, PnFor the first electricity Press corresponding first power, Pn+1For corresponding second power of second voltage.
Step 203: if the difference between current transmission power and default transmission power is greater than or equal to the first preset threshold, Then reader carries out the calibration of power according to current transmission power and power calibration tables of data.
This bright embodiment pre-sets the first preset threshold in reader, and the first preset threshold is that the minimum allowed is missed Difference, such as the first preset threshold are 0.01 or 0.02.Reader calculates the corresponding current transmission power of current emitting voltage Afterwards, reader calculates the difference between current transmission power and default transmission power.If the difference less than the first preset threshold, The current transmission power for being approximately considered reader is equal with default transmission power, at this time without carrying out school to current transmission power It is quasi-.
If the difference is greater than or equal to the first preset threshold, the current transmission power of reader and default transmission power it Between have big difference, need to be adjusted current transmission power.Coarse adjustment and thin is divided into the calibration of power in the embodiment of the present invention Two ways is adjusted, the stepping that coarse adjustment adjusts every time is larger, can quickly approach default hair convenient for the current transmission power of reader Penetrate power.The stepping that fine tuning adjusts every time is smaller, to be not much different when progress in current transmission power and default transmission power It fine-tunes, so that current transmission power be made to be approximately equal to default transmission power.
The embodiment of the present invention is provided with the second preset threshold also in reader, and the second preset threshold is greater than the first default threshold Value, if the first preset threshold is 0.01, then the second preset threshold can be 0.5 or 1 etc..If current transmission power and default hair The difference penetrated between power is less than the second preset threshold and is greater than or equal to the first preset threshold, then directly to the current of reader Transmission power carries out fine tuning, and the difference being adjusted between current transmission power and default transmission power is less than the first preset threshold Only.If the difference between current transmission power and default transmission power is greater than or equal to the second preset threshold, first to reader Current transmission power carry out coarse adjustment, when the difference being adjusted between current transmission power and default transmission power is default less than second Threshold value and when being greater than or equal to the first preset threshold, then fine tuning is carried out to the current transmission power of reader, it is adjusted to currently emit Until difference between power and default transmission power is less than the first preset threshold.
Specifically, reader obtains corresponding calibration parameter pair according to default transmission power from power calibration tables of data； If the difference between current transmission power and default transmission power is greater than or equal to the second preset threshold, according to the calibration of acquisition Parameter is adjusted the coarse adjustment parameter for including to current transmission power, i.e., carries out coarse adjustment to current transmission power, until adjustment The difference between current transmission power and default transmission power afterwards is less than the second preset threshold.
It is carried out in coarse tuning process to current transmission power, reader adjusts the coarse adjustment parameter for including according to calibration parameter Current transmission power.Specifically, reader handles coarse adjustment input parameter signal in chip, and signal processing chip is according to the coarse adjustment Parameter redefines current emitting voltage, emits radiofrequency signal using the current emitting voltage redefined.Reader, which is read, to be adjusted The current emitting voltage of transmitting radiofrequency signal after whole.According to current emitting voltage adjusted and power calibration tables of data, determine The corresponding current transmission power of current emitting voltage adjusted.Determine the corresponding current transmitting of current emitting voltage adjusted The operation of power, identical as the operation of step 202, details are not described herein.
If the difference between current transmission power adjusted and default transmission power is still greater than or is equal to the second default threshold Value then returns to the step of execution adjusts current transmission power according to coarse adjustment parameter, and return is executed every time adjusts according to coarse adjustment parameter When current transmission power, first coarse adjustment parameter can be adjusted, such as increase coarse adjustment parameter according to certain stepping, then utilize tune Coarse adjustment parameter after whole adjusts current transmission power.Coarse adjustment parameter can not also be adjusted, every time using identical thick Parameter is adjusted constantly to adjust current transmission power.Until between current transmission power adjusted and default transmission power Difference is less than the second preset threshold.
Difference between current transmission power and default transmission power is less than the second preset threshold and is greater than or equal to the One preset threshold is then adjusted the current fine tuning parameter for including to current transmission power according to calibration parameter, i.e., to current Transmission power carries out fine tuning, until the difference between current transmission power adjusted and default transmission power is default less than first Threshold value.
It carries out in fine-tuning process to current transmission power, is joined according to current transmission power, default transmission power and calibration It is several to the current fine tuning parameter for including, calculate new current fine tuning parameter.Specifically, according to current transmission power, default transmitting Power and calibration parameter calculate new current fine tuning parameter by formula (2) to the current fine tuning parameter for including；
K1=K0*(10∧((P1-P0)/20))…(2)
In formula (2), K1For new current fine tuning parameter, K0For current fine tuning parameter, P1To preset transmission power, P0 For current transmission power.
After calculating new current fine tuning parameter, current transmission power is adjusted according to new current fine tuning parameter, reads and adjusts The current emitting voltage of transmitting radiofrequency signal after whole.Specifically, new current fine tuning input parameter signal is handled core by reader In piece, signal processing chip redefines current emitting voltage according to new current fine tuning parameter, current using what is redefined Emitting voltage emits radiofrequency signal.Reader reads the current emitting voltage of transmitting radiofrequency signal after adjustment.According to adjusted Current emitting voltage and power calibration tables of data, determine the corresponding current transmission power of current emitting voltage adjusted.It determines The operation of the corresponding current transmission power of current emitting voltage adjusted, it is identical as the operation of step 202, it is no longer superfluous herein It states.
If the difference between current transmission power adjusted and default transmission power is still greater than or is equal to the first default threshold Value then returns and recalculates a new current fine tuning parameter again according to above-mentioned new current fine tuning parameter, until adjusted Difference between current transmission power and default transmission power is less than the first preset threshold.
It is approximate when the difference between the current transmission power of reader and default transmission power is less than the first preset threshold Think that current transmission power is equal with default transmission power, completes the calibration process to reader power at this time.
In embodiments of the present invention, power calibration tables of data is generated by host computer in calibration process, reader storage should Power calibration tables of data.Reader is according to the power calibration tables of data complete independently calibration of power in practical applications, without upper The external equipments such as machine, spectrum analyzer participate in, without carrying out signal transmission, section between devices in power calibration procedure The time for having saved signal transmission between devices, calibration of power error caused by signal transmission errors is avoided, reading is improved Write the efficiency and accuracy of the device calibration of power.
Embodiment 3
Referring to Fig. 5, the embodiment of the invention provides a kind of reader calibration of power device, the device is for executing above-mentioned reality Reader power calibrating method described in example 2 is applied, which includes:
Read module 30, for reading the current emitting voltage of transmitting radiofrequency signal；
Determining module 31, for determining current transmitting electricity according to current emitting voltage and preset power calibration tables of data Press corresponding current transmission power；
Calibration module 32, if it is pre- to be greater than or equal to first for the difference between current transmission power and default transmission power If threshold value, then the calibration of power is carried out according to current transmission power and power calibration tables of data.
Above-mentioned determining module 31 includes:
Query unit, for whether inquiring in preset power calibration tables of data comprising current emitting voltage；
Acquiring unit, for inquiring in preset power calibration tables of data when query unit comprising current emitting voltage When, the corresponding current transmission power of current emitting voltage is obtained from power calibration tables of data；
Computing unit, for not including current emitting voltage in preset power calibration tables of data when query unit inquires When, according to current emitting voltage, obtained from power calibration tables of data the first scalar number to and the second scalar number pair, according to first Scalar number to the second scalar number to calculating the corresponding current transmission power of current emitting voltage；First scalar number is to include One voltage is less than the maximum value in all voltages of current emitting voltage in power calibration tables of data, and the second scalar number is to including Second voltage be in power calibration tables of data greater than current emitting voltage all voltages in minimum value.
Above-mentioned computing unit, be specifically used for according to the first scalar number to and the second scalar number pair, calculate slope value；According to working as Preceding transmission power and slope value calculate the corresponding current transmission power of current emitting voltage by formula (1)；
P=V/K ... (1)
In formula (1), K=(Vn+1-Vn)/(Pn+1-Pn), K is slope value, and P is current transmission power, and V is current transmitting Voltage, VnIt is the first scalar number to the first voltage for including, Vn+1It is the second scalar number to the second voltage for including, PnFor the first electricity Press corresponding first power, Pn+1For corresponding second power of second voltage.
Above-mentioned calibration module 32 includes:
Parameter acquiring unit, for obtaining corresponding calibration parameter from power calibration tables of data according to default transmission power It is right；
Coarse adjustment unit, if it is default to be greater than or equal to second for the difference between current transmission power and default transmission power Threshold value is then adjusted the coarse adjustment parameter for including to current transmission power according to calibration parameter, until current hair adjusted The difference between power and default transmission power is penetrated less than the second preset threshold, the second preset threshold is greater than the first preset threshold；
Fine tuning unit, if for the difference between current transmission power and default transmission power less than the second preset threshold and More than or equal to the first preset threshold, then the current fine tuning parameter for including adjusts current transmission power according to calibration parameter It is whole, until the difference between current transmission power adjusted and default transmission power is less than the first preset threshold.
Above-mentioned coarse adjustment unit is read specifically for adjusting current transmission power to the coarse adjustment parameter for including according to calibration parameter Take the current emitting voltage for emitting radiofrequency signal after adjusting；According to current emitting voltage adjusted and power calibration tables of data, Determine the corresponding current transmission power of current emitting voltage adjusted；If current transmission power adjusted and default transmitting function Difference between rate is still greater than or is equal to the second preset threshold, then returns and execute according to coarse adjustment parameter adjustment current transmission power Step, until the difference between current transmission power adjusted and default transmission power is less than the second preset threshold.
Above-mentioned fine tuning unit, specifically for according to current transmission power, default transmission power and calibration parameter to including Current fine tuning parameter, calculates new current fine tuning parameter；Current transmission power is adjusted according to new current fine tuning parameter, reads and adjusts The current emitting voltage of transmitting radiofrequency signal after whole；According to current emitting voltage adjusted and power calibration tables of data, determine The corresponding current transmission power of current emitting voltage adjusted；If current transmission power adjusted and default transmission power it Between difference be still greater than or be equal to the first preset threshold, then return recalculate new current fine tuning parameter, until adjusted Difference between current transmission power and default transmission power is less than the first preset threshold.
Above-mentioned fine tuning unit, specifically for according to current transmission power, default transmission power and calibration parameter to including Current fine tuning parameter, new current fine tuning parameter is calculated by formula (2)；
K1=K0*(10∧((P1-P0)/20))…(2)
In formula (2), K1For new current fine tuning parameter, K0For current fine tuning parameter, P1To preset transmission power, P0 For current transmission power.
In embodiments of the present invention, the device further include:
Power calibration tables of data configuration module, for receiving the power calibration tables of data of host computer transmission, power calibration number It include the mapping relations of default transmission power, scalar number pair and calibration parameter pair according to table；Storage power calibration data table.
In embodiments of the present invention, power calibration tables of data is generated by host computer in calibration process, reader storage should Power calibration tables of data.Reader is according to the power calibration tables of data complete independently calibration of power in practical applications, without upper The external equipments such as machine, spectrum analyzer participate in, without carrying out signal transmission, section between devices in power calibration procedure The time for having saved signal transmission between devices, calibration of power error caused by signal transmission errors is avoided, reading is improved Write the efficiency and accuracy of the device calibration of power.
Embodiment 4
Referring to Fig. 6, the embodiment of the invention provides a kind of reader power calibration device, the device is for executing above-mentioned reality Reader power calibration method provided by example 1 is applied, which includes:
Parameter sending module 40, for generating the corresponding calibration parameter pair of default transmission power, send calibration parameter to Reader；
Power acquisition module 41, for obtaining actual transmission function of the reader according to calibration parameter to transmitting radiofrequency signal Rate；
Generation module 42, for, to, actual emission power and default transmission power, generating power calibration according to calibration parameter Tables of data；
Calibration data sending module 43, for sending power calibration tables of data to reader, so that reader is according to power Calibration data table carries out the calibration of power.
Above-mentioned generation module 42, if being greater than or equal to for the difference between actual emission power and default transmission power Two preset thresholds then adjust calibration parameter to the coarse adjustment parameter for including, and send calibration parameter adjusted to reader, so that Reader is according to calibration parameter adjusted to adjustment power, and the actual emission power of reader emits with default after adjustment For difference between power less than the second preset threshold, the second preset threshold is greater than the first preset threshold；If actual emission power with Difference between default transmission power less than the second preset threshold and is greater than or equal to the first preset threshold, then adjusts calibration parameter To the fine tuning parameter for including, calibration parameter adjusted is sent to reader, so that reader is joined according to calibration adjusted Several pairs of adjustment power, the difference after adjustment between the actual emission power and default transmission power of reader are pre- less than first If threshold value；If the difference between actual emission power and default transmission power obtains current read-write less than the first preset threshold Device emits current emitting voltage when radiofrequency signal, the current actual emission power of reader and current emitting voltage is formed pre- If the corresponding scalar number pair of transmission power, default transmission power, scalar number pair and current calibration parameter are stored in correspondence In power calibration tables of data.
In embodiments of the present invention, power calibration tables of data is generated by host computer in calibration process, reader storage should Power calibration tables of data.Reader is according to the power calibration tables of data complete independently calibration of power in practical applications, without upper The external equipments such as machine, spectrum analyzer participate in, without carrying out signal transmission, section between devices in power calibration procedure The time for having saved signal transmission between devices, calibration of power error caused by signal transmission errors is avoided, reading is improved Write the efficiency and accuracy of the device calibration of power.
Embodiment 5
The embodiment of the present invention provides a kind of reader power calibration equipment, which includes one or more processors, with And one or more storage devices, be stored with one or more programs in one or more of storage devices, it is one or When multiple programs are loaded and executed by one or more of processors, reader power provided by above-described embodiment 1 is realized Calibrating method.
In embodiments of the present invention, power calibration tables of data is generated by host computer in calibration process, reader storage should Power calibration tables of data.Reader is according to the power calibration tables of data complete independently calibration of power in practical applications, without upper The external equipments such as machine, spectrum analyzer participate in, without carrying out signal transmission, section between devices in power calibration procedure The time for having saved signal transmission between devices, calibration of power error caused by signal transmission errors is avoided, reading is improved Write the efficiency and accuracy of the device calibration of power.
Embodiment 6
The embodiment of the present invention provide a kind of computer can storage medium, be stored with executable program in the storage medium, institute Executable code processor is stated to load and realize reader power calibration method provided by above-described embodiment 1 when executing.
In embodiments of the present invention, power calibration tables of data is generated by host computer in calibration process, reader storage should Power calibration tables of data.Reader is according to the power calibration tables of data complete independently calibration of power in practical applications, without upper The external equipments such as machine, spectrum analyzer participate in, without carrying out signal transmission, section between devices in power calibration procedure The time for having saved signal transmission between devices, calibration of power error caused by signal transmission errors is avoided, reading is improved Write the efficiency and accuracy of the device calibration of power.
Embodiment 7
The embodiment of the present invention provides a kind of reader, including one or more processors, and one or more storage dresses It sets, it is fixed that reader power provided by one or more programs and embodiment 1 is stored in one or more of storage devices The power calibration tables of data that mark method generates, one or more of programs are loaded and are executed by one or more of processors When, realize reader power calibrating method provided by above-described embodiment 2.
In embodiments of the present invention, power calibration tables of data is generated by host computer in calibration process, reader storage should Power calibration tables of data.Reader is according to the power calibration tables of data complete independently calibration of power in practical applications, without upper The external equipments such as machine, spectrum analyzer participate in, without carrying out signal transmission, section between devices in power calibration procedure The time for having saved signal transmission between devices, calibration of power error caused by signal transmission errors is avoided, reading is improved Write the efficiency and accuracy of the device calibration of power.
It should be understood that
Algorithm and display do not have intrinsic phase with any certain computer, virtual bench or other equipment provided herein It closes.Various fexible units can also be used together with teachings based herein.As described above, this kind of device is constructed to be wanted The structure asked is obvious.In addition, the present invention is also not directed to any particular programming language.It should be understood that can use each Kind programming language realizes summary of the invention described herein, and the description done above to language-specific is to disclose this The preferred forms of invention.
In the instructions provided here, numerous specific details are set forth.It is to be appreciated, however, that implementation of the invention Example can be practiced without these specific details.In some instances, well known method, structure is not been shown in detail And technology, so as not to obscure the understanding of this specification.
Similarly, it should be understood that in order to simplify the disclosure and help to understand one or more of the various inventive aspects, Above in the description of exemplary embodiment of the present invention, each feature of the invention is grouped together into single implementation sometimes In example, figure or descriptions thereof.However, the disclosed method should not be interpreted as reflecting the following intention: i.e. required to protect Shield the present invention claims features more more than feature expressly recited in each claim.More precisely, as following Claims reflect as, inventive aspect is all features less than single embodiment disclosed above.Therefore, Thus the claims for following specific embodiment are expressly incorporated in the specific embodiment, wherein each claim itself All as a separate embodiment of the present invention.
Those skilled in the art will understand that can be carried out adaptively to the module in the equipment in embodiment Change and they are arranged in one or more devices different from this embodiment.It can be the module or list in embodiment Member or component are combined into a module or unit or component, and furthermore they can be divided into multiple submodule or subelement or Sub-component.Other than such feature and/or at least some of process or unit exclude each other, it can use any Combination is to all features disclosed in this specification (including adjoint claim, abstract and attached drawing) and so disclosed All process or units of what method or apparatus are combined.Unless expressly stated otherwise, this specification is (including adjoint power Benefit require, abstract and attached drawing) disclosed in each feature can carry out generation with an alternative feature that provides the same, equivalent, or similar purpose It replaces.
In addition, it will be appreciated by those of skill in the art that although some embodiments described herein include other embodiments In included certain features rather than other feature, but the combination of the feature of different embodiments mean it is of the invention Within the scope of and form different embodiments.For example, in the following claims, embodiment claimed is appointed Meaning one of can in any combination mode come using.
Various component embodiments of the invention can be implemented in hardware, or to run on one or more processors Software module realize, or be implemented in a combination thereof.It will be understood by those of skill in the art that can be used in practice One in the creating device of microprocessor or digital signal processor (DSP) to realize virtual machine according to an embodiment of the present invention The some or all functions of a little or whole components.The present invention is also implemented as executing method as described herein Some or all device or device programs (for example, computer program and computer program product).Such realization Program of the invention can store on a computer-readable medium, or may be in the form of one or more signals.This The signal of sample can be downloaded from an internet website to obtain, and is perhaps provided on the carrier signal or mentions in any other forms For.
It should be noted that the above-mentioned embodiments illustrate rather than limit the invention, and ability Field technique personnel can be designed alternative embodiment without departing from the scope of the appended claims.In the claims, Any reference symbol between parentheses should not be configured to limitations on claims.Word "comprising" does not exclude the presence of not Element or step listed in the claims.Word "a" or "an" located in front of the element does not exclude the presence of multiple such Element.The present invention can be by means of including the hardware of several different elements and being come by means of properly programmed computer real It is existing.In the unit claims listing several devices, several in these devices can be through the same hardware branch To embody.The use of word first, second, and third does not indicate any sequence.These words can be explained and be run after fame Claim.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto, In the technical scope disclosed by the present invention, any changes or substitutions that can be easily thought of by anyone skilled in the art, It should be covered by the protection scope of the present invention.Therefore, protection scope of the present invention should be with the protection model of the claim Subject to enclosing.

Claims (10)

1. a kind of reader power calibrating method, which is characterized in that the described method includes:
Read the current emitting voltage of transmitting radiofrequency signal；
According to the current emitting voltage and preset power calibration tables of data, determine that the current emitting voltage is corresponding current Transmission power；
If the difference between the current transmission power and default transmission power is greater than or equal to the first preset threshold, according to institute It states current transmission power and the power calibration tables of data carries out the calibration of power.
2. the method according to claim 1, wherein described according to the current emitting voltage and preset power Calibration data table determines the corresponding current transmission power of the current emitting voltage, comprising:
It whether inquires in preset power calibration tables of data comprising the current emitting voltage；
If it is, obtaining the corresponding current transmission power of the current emitting voltage from the power calibration tables of data；
If not, according to the current emitting voltage, obtained from the power calibration tables of data the first scalar number to and second Scalar number pair, according to first scalar number to corresponding current to the current emitting voltage is calculated with second scalar number Transmission power；First scalar number is to be less than the current transmitting in the power calibration tables of data to the first voltage for including Maximum value in all voltages of voltage, second scalar number are in the power calibration tables of data to the second voltage for including Greater than the minimum value in all voltages of the current emitting voltage.
3. according to the method described in claim 2, it is characterized in that, described determine according to first scalar number with described second It marks several pairs and calculates the corresponding current transmission power of the current emitting voltage, comprising:
According to first scalar number to second scalar number pair, calculate slope value；
According to the current transmission power and the slope value, work as by the way that formula (1) calculating current emitting voltage is corresponding Preceding transmission power；
P=V/K ... (1)
In the formula (1), K=(Vn+1-Vn)/(Pn+1-Pn), K is the slope value, and P is the current transmission power, and V is The current emitting voltage, VnIt is first scalar number to the first voltage for including, Vn+1For second scalar number pair Including the second voltage, PnFor corresponding first power of the first voltage, Pn+1For the second voltage corresponding second Power.
4. the method according to claim 1, wherein described fixed according to the current transmission power and the power It marks tables of data and carries out the calibration of power, comprising:
Corresponding calibration parameter pair is obtained from the power calibration tables of data according to the default transmission power；
If the difference between the current transmission power and default transmission power is greater than or equal to the second preset threshold, according to institute It states calibration parameter to be adjusted the current transmission power coarse adjustment parameter for including, until current transmission power adjusted Difference between the default transmission power is less than second preset threshold, and second preset threshold is greater than described first Preset threshold；
If the difference between the current transmission power and the default transmission power is less than second preset threshold and is greater than Or be equal to first preset threshold, then according to the calibration parameter to the current fine tuning parameter for including to the current transmitting function Rate is adjusted, until the difference between current transmission power adjusted and the default transmission power is less than described first in advance If threshold value.
5. according to the method described in claim 4, it is characterized in that, it is described according to the calibration parameter to the coarse adjustment parameter for including The current transmission power is adjusted, comprising:
The current transmission power is adjusted to the coarse adjustment parameter for including according to the calibration parameter, reads transmitting radio frequency letter after adjustment Number current emitting voltage；
According to the current emitting voltage adjusted and the power calibration tables of data, the current transmitting adjusted is determined The corresponding current transmission power of voltage；
If the difference between the current transmission power adjusted and the default transmission power is still greater than or is equal to described the Two preset thresholds then return to the step of execution adjusts the current transmission power according to the coarse adjustment parameter, until adjusted Difference between current transmission power and the default transmission power is less than second preset threshold.
6. according to the method described in claim 4, it is characterized in that, the current fine tuning according to the calibration parameter to including Parameter is adjusted the current transmission power, comprising:
According to the current transmission power, the default transmission power and the calibration parameter to the current fine tuning parameter for including, Calculate new current fine tuning parameter；
The current transmission power is adjusted according to the new current fine tuning parameter, emits the current of radiofrequency signal after reading adjustment Emitting voltage；
According to the current emitting voltage adjusted and the power calibration tables of data, the current transmitting adjusted is determined The corresponding current transmission power of voltage；
If the difference between the current transmission power adjusted and the default transmission power is still greater than or is equal to described the One preset threshold, then return recalculate new current fine tuning parameter, until the current transmission power adjusted with it is described Difference between default transmission power is less than first preset threshold.
7. according to the method described in claim 6, it is characterized in that, described according to the current transmission power, the default hair Power and the calibration parameter are penetrated to the current fine tuning parameter for including, calculates new current fine tuning parameter, comprising:
According to the current transmission power, the default transmission power and the calibration parameter to the current fine tuning parameter for including, New current fine tuning parameter is calculated by formula (2)；
K1=K0*(10∧((P1-P0)/20))…(2)
In formula (2), K1For the new current fine tuning parameter, K0For current fine tuning parameter, P1For the default transmitting function Rate, P0For the current transmission power.
8. the method according to claim 1, wherein described according to the current emitting voltage and preset power Calibration data table, before determining the corresponding current transmission power of the current emitting voltage, further includes:
The power calibration tables of data that host computer is sent is received, the power calibration tables of data includes default transmission power, scalar number Pair and calibration parameter pair mapping relations；
Store the power calibration tables of data.
9. a kind of reader power calibration method, which is characterized in that the described method includes:
The default corresponding calibration parameter pair of transmission power is generated, sends the calibration parameter to reader；
Obtain actual emission power of the reader according to the calibration parameter to transmitting radiofrequency signal；
According to the calibration parameter to, the actual emission power and the default transmission power, power calibration tables of data is generated；
The power calibration tables of data is sent to the reader so that the reader according to the power calibration tables of data into The row calibration of power.
10. according to the method described in claim 9, it is characterized in that, it is described according to the calibration parameter to, the actual transmission Power and default transmission power generate power calibration tables of data, comprising:
If the difference between the actual emission power and default transmission power is greater than or equal to the second preset threshold, institute is adjusted Calibration parameter is stated to the coarse adjustment parameter for including, sends the calibration parameter adjusted to the reader, so that the reading Write device according to the calibration parameter adjusted to carry out power adjustment, until adjustment after the reader actual emission power Difference between the default transmission power is less than second preset threshold, and second preset threshold is greater than described first Preset threshold；
If the difference between the actual emission power and the default transmission power is less than second preset threshold and is greater than Or be equal to first preset threshold, then the calibration parameter is adjusted to the fine tuning parameter for including, and sends the school adjusted Quasi- parameter to give the reader so that the reader according to the calibration parameter adjusted to carry out power adjustment, directly It is default that difference after to adjustment between the actual emission power of the reader and the default transmission power is less than described first Threshold value；
If the difference between the actual emission power and default transmission power obtains presently described less than the first preset threshold Reader emits current emitting voltage when radiofrequency signal, by the current actual emission power of the reader and the current hair Radio pressure forms the corresponding scalar number pair of the default transmission power, by the default transmission power, the scalar number pair and works as Preceding calibration parameter is stored in power calibration tables of data correspondence.
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CN112114403B (en) * 2020-09-23 2023-05-05 武汉光迅科技股份有限公司 Calibration method, device and equipment for optical switch and computer readable storage medium
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