CN103869095B - For the TDC-GP1 chip method to set up of wind energy turbine set ultrasonic wind speed monitoring - Google Patents

Abstract

The invention discloses a kind of TDC-GP1 chip method to set up for the monitoring of wind energy turbine set ultrasonic wind speed, initialization register, arranges the mode of operation of TDC-GP1 chip; Data read in TDC-GP1 chip and writes, data to be read in TDC-GP1 chip and write is specially: the passage 1 of TDC-GP1 chip, triggering 2 pulses; Reset TDC-GP1 chip and logic arithmetic unit, judge whether the INT_Flag position in TDC-GP1 chip register is 1, if not being 1 state continuing to judge INT_Flag position, until INT_Flag position is 1, then by the digital independent in TDC-GP1 chip; The data of reading are calculated and judges that whether result of calculation is correct, or result of calculation mistake then sends rub-out signal to CPLD chip, thus return step 201; As result of calculation correctly then shows by result of calculation.Realize the advantage of precise monitoring wind farm wind velocity.

Description

For the TDC-GP1 chip method to set up of wind energy turbine set ultrasonic wind speed monitoring

Technical field

The present invention relates to generation of electricity by new energy process apoplexy monitoring resource technical field, particularly, relate to a kind of TDC-GP1 chip method to set up for the monitoring of wind energy turbine set ultrasonic wind speed.

Background technology

At present; the large-scale new forms of energy base majority that China's wind-powered electricity generation produces after entering the large-scale development stage is positioned at " three northern areas of China " (northwest, northeast, North China); large-scale new forms of energy base is generally away from load center, and its electric power needs to be transported to load center to dissolve through long-distance, high voltage.Due to the intermittence of wind-resources, randomness and undulatory property, cause the fluctuation that the wind-powered electricity generation generated output in extensive new forms of energy base can occur in a big way thereupon, cause the fluctuation of power transmission network charge power further, bring series of problems to safe operation of electric network.

By in November, 2013, the installed capacity of Gansu Power Grid grid connected wind power has reached 6,680,000 kilowatts, accounts for 21% of Gansu Power Grid total installation of generating capacity, becomes the second largest main force power supply being only second to thermoelectricity.Along with improving constantly of wind-electricity integration scale, wind-powered electricity generation uncertainty and uncontrollability bring problems to the safety and stability economical operation of electrical network.Wind-resources in wind-power electricity generation process is monitored, better can predict the situation of change of wind energy in following a period of time, thus wind power can be predicted and correct more accurately, improve precision of prediction, promote the development of generation of electricity by new energy.

TDC-GP1 is split-second precision numeral (TimeDigitalConverter) conversion chip of ACAM company based on 0.8uCMOS technological design, as shown in Figure 3.It utilizes time delay collimation method accurately can to measure the time interval between two pulses or multiple pulse, single channel measuring accuracy is 250ps, and binary channels coupling accuracy can reach 150ps, and measurement range is not from 3ns-200ms etc., therefore its not only measuring accuracy is high, measurement range is also very large.

The measurement range of GP1 temporally can be divided into measurement range 1 and measurement range 2.Measurement range 1 can survey the time interval between 3ns-7.6us, and its measurement task is mainly responsible for by delay line measuring unit; And measurement range 2 is wide range setting, its measuring intervals of TIME is 60ns-200ms, completes its measurement and then delay line measuring unit and measurement range 2 counter must be cooperated use.And TDC-GP1 chip is not used in the monitoring of wind energy turbine set ultrasonic wind speed by existing technology.

Summary of the invention

The object of the invention is to, for the problems referred to above, propose a kind of TDC-GP1 chip method to set up for the monitoring of wind energy turbine set ultrasonic wind speed, to realize the advantage of precise monitoring wind farm wind velocity.

For achieving the above object, the technical solution used in the present invention is:

For a TDC-GP1 chip method to set up for wind energy turbine set ultrasonic wind speed monitoring, comprise the following steps:

Step 1, initialization register, arrange the mode of operation of TDC-GP1 chip;

Step 2, data are read in TDC-GP1 chip and write,

Wherein in step 2, data to be read in TDC-GP1 chip and write is specially:

Step 201, initialization TDC-GP1 chip;

Step 202, triggering 2 pulses in the passage 1 of TDC-GP1 chip;

Step 203, to arrange Reg2 be that 0x01 triggers first Start pulse;

Step 204, replacement TDC-GP1 chip and logic arithmetic unit, judge whether the INT_Flag position in TDC-GP1 chip register is 1, if not being 1 state continuing to judge INT_Flag position, until INT_Flag position is 1, then by the digital independent in TDC-GP1 chip;

After step 205, above-mentioned steps 204 digital independent terminate, reinitialize TDC-GP1 chip;

Step 206, Reg2(register 2 is set) trigger second Start pulse for 0x02, wait for that logic arithmetic unit has calculated, then the data that step 204 reads calculated and judge that whether result of calculation is correct, or result of calculation mistake then sends rub-out signal to the CPLD chip connect with TDC-GP1 chip electrical, thus return step 201;

Step 207, correctly then result of calculation to be shown as result of calculation.

According to a preferred embodiment of the invention, the computing time of above-mentioned logic arithmetic unit is 3us.

According to a preferred embodiment of the invention, the mode of operation arranging TDC-GP1 chip in above-mentioned steps 1 is specific as follows:

Step 101, according to the measurement index of wind energy turbine set practical application and echo temporal aspect, the measurement pattern of the time interval measurement module in TDC-GP1 chip is set; Closed by the passage 2 of TDC-GP1 chip in work, two STOP signal priority admission passages 1 trigger GP1 and measure;

Step 102, have employed high precision mode, namely TDC-GP1 chip provides two passages to bind the measurement pattern of a passage, and its time difference method is 125ps;

Allow once to trigger in the passage 1 of step 103, setting TDC-GP1 chip, and what set that TDC-GP1 chip measures is time interval between start signal and first stop signal.

Technical scheme of the present invention has following beneficial effect:

Technical scheme of the present invention, by being used by TDC-GP1 chip in the monitoring of wind energy turbine set ultrasonic wind speed, thus reaches the object of precise monitoring wind farm wind velocity.

Below by drawings and Examples, technical scheme of the present invention is described in further detail.

Accompanying drawing explanation

Fig. 1 is the process flow diagram of the TDC-GP1 chip method to set up for the monitoring of wind energy turbine set ultrasonic wind speed described in the embodiment of the present invention;

Fig. 2 is flight time interval time diagram;

Fig. 3 is the electrical structure diagram of TDC-GP1 chip.

Embodiment

Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein is only for instruction and explanation of the present invention, is not intended to limit the present invention.

As shown in Figure 1, a kind of TDC-GP1 chip method to set up for the monitoring of wind energy turbine set ultrasonic wind speed, comprises the following steps:

Step 1, initialization register, arrange the mode of operation of TDC-GP1 chip;

Step 2, data are read in TDC-GP1 chip and write,

Wherein in step 2, data to be read in TDC-GP1 chip and write is specially:

Step 201, initialization TDC-GP1 chip;

Step 202, triggering 2 pulses in the passage 1 of TDC-GP1 chip;

Step 203, to arrange Reg2 be that 0x01 triggers first Start pulse;

Step 204, replacement TDC-GP1 chip and logic arithmetic unit, judge whether the INT_Flag position in TDC-GP1 chip register is 1, if not being 1 state continuing to judge INT_Flag position, until INT_Flag position is 1, then by the digital independent in TDC-GP1 chip;

After step 205, above-mentioned steps 204 digital independent terminate, reinitialize TDC-GP1 chip;

Step 206, to arrange Reg2 be that 0x02 triggers second Start pulse, wait for that logic arithmetic unit has calculated, then the data that step 204 reads calculated and judge that whether result of calculation is correct, or result of calculation mistake then sends rub-out signal to the CPLD chip connect with TDC-GP1 chip electrical, thus return step 201;

Step 207, correctly then result of calculation to be shown as result of calculation.

Wherein, the computing time of logic arithmetic unit is 3us.The mode of operation arranging TDC-GP1 chip in step 1 is specific as follows:

Step 101, according to the measurement index of wind energy turbine set practical application and echo temporal aspect, the measurement pattern of the time interval measurement module in TDC-GP1 chip is set; Closed by the passage 2 of TDC-GP1 chip in work, two STOP signal priority admission passages 1 trigger GP1 and measure;

Step 102, have employed high precision mode, namely TDC-GP1 chip provides two passages to bind the measurement pattern of a passage, and its time difference method is 125ps;

Allow once to trigger in the passage 1 of step 103, setting TDC-GP1 chip, and what set that TDC-GP1 chip measures is time interval between start signal and first stop signal.

The mode of operation of GP1 is determined according to the actual range between three-dimensional ultrasonic anemoscope two pairs of transducers, specific as follows:

(1) according to the measurement index of wind energy turbine set practical application, (ranging is 15cm, correspondence about 0.44ms flight time interval) and echo temporal aspect Fig. 2 shown in, design time interval measurement module is that scope 2 is measured in conjunction with high resolution model, is namely completed by inner preset counter and delay path cooperation.In work, passage 2 is closed, and two STOP signal priority admission passages 1 trigger GP1 and measure, and obtain two value t1 and t2, are directly stored in result register and wait for that single-chip microcomputer reads.Because do not need the continuous sampling that interval is very short, can set and once trigger rear execution automatic calibration.

(2) have employed high precision mode for improving time difference method, namely GP1 provides two passages can bind the measurement pattern of a passage, and its time difference method is single pass one times, i.e. 125ps.

(3) because each only need a distance value, so allow once to trigger in setting passage 1, and what set that GP1 measures is time interval between START signal and first STOP signal.If need repeatedly to trigger, continuous sampling, then set by control register 2 and 7.

After pattern determines, must be noted that the temporal constraint under measurement range 1, as shown in Figure 2, each triggering pulsewidth must be greater than 2.5ns, otherwise cannot cause trigger event; First time interval t1 between stop signal and start signal must be greater than 3ns, otherwise stop signal is invalid; The time interval t2 of two stop signals adjacent on same passage must be greater than 15ns, if two stop signals are at a distance of too near, then because passage is in convalescence and cannot by identification when second stop signal arrives; Not free interval restriction between two stop signal t3 on different passage; Time interval t4 between last stop signal and start signal must be less than .

Wherein in Fig. 1, ALU is logic arithmetic unit, and CPLD is CPLD.

Software programming for GP1 mainly divides two parts, and a part is the initialization of register, determines the mode of operation of GP1 with this; Part II is reading and the conversion of data.First initialization is carried out to GP1, in initialization, register 2 is first set, before measurement starts, first forbid any passage, prevent false triggering.Carry out measurement after initialization and read data, because the value read is 16 systems, and once can only read 8, therefore a calibration value needs point 4 readings, complete calculating by calibration clock again, during read data, address pointer can be placed on the reference position order reading of data field.The result read judges through single-chip microcomputer, as incorrect, deletes, and recalibrates GP1, waits to be measured; It should be noted that and often start an independent measurement, preferably GP1 is reinitialized, to ensure the correct of each measured value.

Last it is noted that the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although with reference to previous embodiment to invention has been detailed description, for a person skilled in the art, it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature.Within the spirit and principles in the present invention all, any amendment done, equivalent replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (3)

1., for a TDC-GP1 chip method to set up for wind energy turbine set ultrasonic wind speed monitoring, it is characterized in that, comprise the following steps:

Step 1, initialization first register, arrange the mode of operation of TDC-GP1 chip;

Step 2, data are read in TDC-GP1 chip and write,

Wherein in step 2, data to be read in TDC-GP1 chip and write is specially:

Step 201, initialization TDC-GP1 chip;

Step 202, triggering 2 pulses in the passage 1 of TDC-GP1 chip;

Step 203, arrange the second register be 0x01 trigger first start pulse;

Step 204, replacement TDC-GP1 chip and logic arithmetic unit, judge whether the INT_Flag position in TDC-GP1 chip first register is 1, if not being 1 state continuing to judge INT_Flag position, until INT_Flag position is 1, then by the digital independent in TDC-GP1 chip;

After step 205, above-mentioned steps 204 digital independent terminate, reinitialize TDC-GP1 chip;

Step 206, arrange the second register be 0x02 trigger second start pulse, wait for that logic arithmetic unit has calculated, then the data that step 204 reads calculated and judge that whether result of calculation is correct, as result of calculation mistake then sends rub-out signal to the CPLD chip connect with TDC-GP1 chip electrical, thus return step 201;

Step 207, correctly then result of calculation to be shown as result of calculation.

2. the TDC-GP1 chip method to set up for the monitoring of wind energy turbine set ultrasonic wind speed according to claim 1, it is characterized in that, the computing time of above-mentioned logic arithmetic unit is 3us.

3. the TDC-GP1 chip method to set up for the monitoring of wind energy turbine set ultrasonic wind speed according to claim 1 and 2, it is characterized in that, the mode of operation arranging TDC-GP1 chip in above-mentioned steps 1 is specific as follows:

Step 101, according to the measurement index of wind energy turbine set practical application and echo temporal aspect, the measurement pattern of the time interval measurement module in TDC-GP1 chip is set; Closed by the passage 2 of TDC-GP1 chip in work, two STOP signal priority admission passages 1 trigger GP1 and measure;

Step 102, have employed high precision mode, namely TDC-GP1 chip provides two passages to bind the measurement pattern of a passage, and its time difference method is 125ps;

Allow once to trigger in the passage 1 of step 103, setting TDC-GP1 chip, and what set that TDC-GP1 chip measures is time interval between start signal and first stop signal.