CN104360300A - Automatic voltage accuracy correcting and adjusting method for voltage calibrating device - Google Patents
Automatic voltage accuracy correcting and adjusting method for voltage calibrating device Download PDFInfo
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Abstract
The invention discloses an automatic voltage accuracy correcting and adjusting method for a voltage calibrating device. According to the method, the base output value of each channel is measured and recorded through a circulation test, after the number of recording times reaches five, difference values between the output values of all the channels and a standard output value are obtained through comparison between the recorded output values of all the channels in the five records and the standard output value, and if the difference value, exceeding a first permissible range value, of the channel exists, output compensation is carried out on the corresponding channel till the difference value is within the first permissible range value; if the difference value, exceeding a second permissible range value, of the channel exists, reference compensation detection is carried out on the corresponding channel, the difference value between a voltage reference value of the channel and an expected standard value is obtained through comparison between the voltage reference value of the channel and the expected standard value, if the difference value exceeds a reference permissible range value, reference compensation is carried out on the corresponding channel till the difference value is within the reference permissible range value, and the circulation test continues to be carried out. Compared with the prior art, automatic software compensation and correction are carried out on the channels with errors through the circulation test, manual calibration is omitted, and calibration precision and efficiency are improved.
Description
Technical field
The present invention relates to electronic technology field, specifically refer to a kind of voltage accuracy auto modification adjusting process of voltage calibration equipment.
Background technology
Along with the development of new forms of energy, use battery also to occur more and more as the equipment of power supply, and need to use managing electric quantity product using battery as the equipment of power supply.In the process manufacturing managing electric quantity product, the high-precision voltage check adjustment of managing electric quantity product needed, now, the voltage reference value that existing voltage reference output exports often is subject to managing electric quantity product metapyretic temperature drift impact, make calibration equipment after follow-on test managing electric quantity product a period of time, the current base output valve of its equipment respective channel produces saltus step or skew, thus the voltage accuracy of this calibration equipment is affected, and causes product yields lower.If but need to obtain voltage compensation in existing equipment, can only by carrying out manual setting to the variable resistor resistance of Circuit tuning, need in adjustment process to relate to complicated hardware adjustment, efficiency is very low, is unfavorable for the raising of the performance of enterprises.
Summary of the invention
In view of this, the present invention needs the problem solved to be provide a kind of auto modification adjusting process being applied to the calibration equipment voltage accuracy with multichannel voltage reference output.
In order to solve the problem, the invention provides following technological means: a kind of voltage accuracy auto modification adjusting process of voltage calibration equipment, based on the calibration equipment with multichannel voltage reference output, it is characterized in that: comprise following auto modification alignment step:
A. the current base output valve of each channel voltage reference output output of host computer loop test, records this currency, completes one and takes turns the record of loop test postscript once;
B. after upper computer detection has recorded preset loop number of times to loop test, the output valve of each channel voltage reference output of all records in this preset loop number of times is averaged respectively, compare with standard output value again, obtain the difference of each channel output values and standard output value;
If c. all channel difference values are within the scope of the first permissible value, then repetition step from a, if there is channel difference values to be greater than the first default permissible value scope, then carries out output to this passage current base output valve and compensates, the complete rear execution steps d of each channel compensation;
If difference size is outside the second permissible value scope, then starts benchmark and compensate detection, read this channel voltage reference value, and this voltage reference value is compared with given voltage reference value, obtain its difference, if this difference size is in benchmark allowed band value, then current channel exits compensation; If this difference size is outside benchmark allowed band value, then benchmark compensation is carried out to this channel voltage reference value, the complete rear execution step e of each channel compensation; Wherein, the absolute value of the second permissible value is greater than the absolute value of the first permissible value;
D. all passages detect the difference of drawn current output valve and standard output value again within the scope of the first permissible value, then complete to export to compensate, repetition step from a; Otherwise again carry out output to the passage of this differences all not within the scope of the first permissible value to compensate, and repeat steps d; If after compensation number of times is greater than default maximum compensation number of times, perform step f;
E. all passages read the difference of measured current voltage reference value and desired standard value again in benchmark allowed band value size, then complete benchmark and compensate, repetition step from a; Otherwise again benchmark compensation is carried out to the passage of this difference not in benchmark allowed band value size, and repeats step e; If after compensation number of times is greater than default maximum compensation number of times, perform step f;
F. a certain passage is after Continuous Compensation number of times is greater than default maximum compensation number of times, host computer will send after this path marking maintenance warning, and from a repetition step.
Preferably, the preset loop number of times of described loop test is 5 times.
Preferably, described output compensates by being biased the compensation of output offset realization to current output valve to current base output valve, and described benchmark compensates the compensation by realizing voltage reference value biased reference offset for current voltage reference value.
Preferably, described output offset and benchmark offset are respectively 16 bit data be stored in two bytes, comprise for judging that this output offset and voltage reference value need add up or reduce the conversion position of difference and the difference position for saved differences, described output offset uses 1 bytes store conversion position, and uses 1 bytes store difference position; Described benchmark offset uses 0.5 bytes store conversion position, and uses 1.5 bytes store difference positions.
Preferably, the conversion position of described output offset or benchmark offset is stored in a high position for upper byte, and described difference position is stored in the low level of low byte.
Preferably, when conversion position is 0, the benchmark output valve of current channel or voltage reference value add up the difference that difference position stores; When conversion position is 1, the benchmark output valve of current channel or voltage reference value deduct the difference that difference position stores.
Preferably, described first permissible value scope is ± 2MV, and described second permissible value scope is ± 10MV, and described benchmark allowed band value is ± 0.25MV.
Compared with prior art, the present invention passes through repeatedly cycle detection, difference is calculated by after the current base output valve weighted mean of each passage, again this difference is biased to current base output valve, obtain current base output valve more accurately, realize the soft compensation of current base output valve, this process is for automatically performing detection and adjustment, eliminate artificial input, and this compensation is divided into output to compensate and benchmark compensates, export compensation and can carry out fine setting compensation to benchmark output valve, and benchmark compensation carries out coarse adjustment compensation to voltage reference value, can effectively compensate more accurately the passage of different difference, improve checking precision and efficiency.
Accompanying drawing explanation
Fig. 1 is that the embodiment of the present invention exports compensation schematic process flow diagram;
Fig. 2 is that embodiment of the present invention benchmark compensates schematic process flow diagram.
Embodiment
Below in conjunction with drawings and Examples, content of the present invention is described in further detail.
As shown in Figure 1, Fig. 1 is the schematic process flow diagram that embodiment of the present invention entirety realizes taking precautions against, and in order to realize the function of Self-regulation track, this technological means comprises the following steps:
The first step, first initialization host computer, the voltage reference value of storage standards, complete the voltage reference value of the initialization each channel voltage reference output output of host computer loop test later, record the value that each channel voltage benchmark exports, complete one and take turns loop test postscript for recording once, and the number of times of record is stored into voltage output number of times totalizer;
After upper computer detection has recorded preset loop number of times to loop test, the value exported by each channel voltage benchmark of this preset loop number of times record respectively weighted mean has obtained the voltage reference output mean value of each passage; The present embodiment preset loop number of times is designated as 5 times, when upper computer detection is to loop test after 5 times, and the Self-regulation track voltage accuracy pattern of start up system.
Second step, this Self-regulation track voltage accuracy pattern first retrieves rear five records of test, according to formula C=| (X
1+ X
2+ X
3+ X
4+ X
5)/5-S| obtains the difference of the mean value after 5 weighted means and standard output value, if this difference within ± 2MV scope, is then defined as and does not need to compensate, if this difference is beyond the scope of ± 2MV, then be defined as needs to compensate, then start compensation mechanism.
3rd step, this compensation mechanism comprises output compensation and benchmark compensates two kinds of compensation ways, the passage that this exists difference is compensated, if this difference is outer in the scope of ± 2MV but within scope at ± 10MV, confirm as less difference, then carry out output to the voltage reference output of this passage to compensate, output is compensated for as and realizes fine tuning process to the biased offset that exports of this current base output valve, this output offset is 16 binary value, carrying out exporting in the process of compensation, first this difference is changed into the value of 16 systems, the value again this being changed into 16 systems is stored in the difference position of 1 byte-sized, the difference position of this 1 byte-sized can store the difference data of 0-255 value range, be placed on the low level exporting offset, again by the phase condition of this difference, namely positive negative situation is stored in conversion position, when difference is timing, the value of conversion position is 0, add up when testing current base output valve the difference needing to compensate, when difference is for time negative, the value of conversion position is 1, the difference needing to compensate is deducted when testing current base output valve, and this value to be stored into size be in the conversion position of 1 byte, be placed on the high position exporting offset, conversion position and difference position size totally 2 bytes.
If each passage carry out output compensate complete after, again current to equipment benchmark output valve detects, if each passage carry out output compensate complete after, again output is carried out to equipment and compensate detection, if the difference of the current base output valve of all passages and the standard output value preset is within the scope of ± 2MV, then exit to export to compensate and detect, proceed loop test; If have the difference of passage outside ± 2MV scope, then output is carried out again to this off-limits passage and compensate, until all passages are all within this difference allowed band.If after this passage Continuous Compensation number of times is greater than default maximum compensation number of times, host computer will send maintenance warning after this path marking, and exit output compensation detection, proceed loop test.
4th step, as shown in Figure 2, if this difference is beyond the scope of ± 10MV, confirm as larger difference, then benchmark is carried out to equipment and compensate detection, and adopt the voltage reference value of the mode of serial to each passage to read, again the present reference value detected and desired standard value are compared, if the difference of this passage current voltage reference value and desired standard value in ± 0.25MV, then exits and compensates the benchmark of this passage, the benchmark continuing next passage compensates and detects.If the difference of this passage current voltage reference value and desired standard value outside ± 0.25MV scope, then carries out benchmark compensation to the voltage reference output of this passage, by obtaining compensating approach to current voltage reference value biased reference offset.
Benchmark offset is the same with output offset, comprise the difference position being positioned at high-order conversion position and being positioned at low level, but conversion position size is only 0.5 byte, difference position size is 1.5 bytes, the scope of the storable value in such difference position is 0-4095, substantially increase the scope of storable difference size compared with exporting and compensating, its compensation precision is higher, is applicable to current voltage reference value and desired standard value and there is situation compared with big difference.
If each passage carry out benchmark compensate complete after, again benchmark is carried out to equipment and compensates and detect, if the difference of the current voltage reference value of all passages and desired standard value is within the scope of ± 0.25MV, then exits benchmark and compensate detection, proceed loop test; If have the difference of passage outside ± 0.25MV scope, then again benchmark compensation is carried out to this off-limits passage, until all passages are all within this difference allowed band, if after this passage Continuous Compensation number of times is greater than default maximum compensation number of times, host computer will send maintenance warning after this path marking, and exit benchmark compensation detection, proceed loop test.
Above-described embodiment is only preferably implementation of the present invention, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the scope of the claims of the present invention.It should be pointed out that for the person of ordinary skill of the art, without departing from the inventive concept of the premise, can also make some distortion and improvement, these apparent replacement forms all belong to protection scope of the present invention.
Claims (7)
1. a voltage accuracy auto modification adjusting process for voltage calibration equipment, based on the calibration equipment with multichannel voltage reference output, is characterized in that: comprise following auto modification alignment step:
A. the current base output valve of each channel voltage reference output output of host computer loop test, records this currency, completes one and takes turns the record of loop test postscript once;
B. after upper computer detection has recorded preset loop number of times to loop test, the output valve of each channel voltage reference output of all records in this preset loop number of times is averaged respectively, compare with standard output value again, obtain the difference of each channel output values and standard output value;
If c. all channel difference values are within the scope of the first permissible value, then repetition step from a, if there is channel difference values to be greater than the first default permissible value scope, then carries out output to this passage current base output valve and compensates, the complete rear execution steps d of each channel compensation;
If difference size is outside the second permissible value scope, then starts benchmark and compensate detection, read this channel voltage reference value, and this voltage reference value is compared with given voltage reference value, obtain its difference, if this difference size is in benchmark allowed band value, then current channel exits compensation; If this difference size is outside benchmark allowed band value, then benchmark compensation is carried out to this channel voltage reference value, the complete rear execution step e of each channel compensation; Wherein, the absolute value of the second permissible value is greater than the absolute value of the first permissible value;
D. all passages detect the difference of drawn current output valve and standard output value again within the scope of the first permissible value, then complete to export to compensate, repetition step from a; Otherwise again carry out output to the passage of this differences all not within the scope of the first permissible value to compensate, and repeat steps d; If after compensation number of times is greater than default maximum compensation number of times, perform step f;
E. all passages read the difference of measured current voltage reference value and desired standard value again in benchmark allowed band value size, then complete benchmark and compensate, repetition step from a; Otherwise again benchmark compensation is carried out to the passage of this difference not in benchmark allowed band value size, and repeats step e; If after compensation number of times is greater than default maximum compensation number of times, perform step f;
F. a certain passage is after Continuous Compensation number of times is greater than default maximum compensation number of times, host computer will send after this path marking maintenance warning, and from a repetition step.
2. the voltage accuracy auto modification adjusting process of voltage calibration equipment according to claim 1, is characterized in that: the preset loop number of times of described loop test is 5 times.
3. the voltage accuracy auto modification adjusting process of voltage calibration equipment according to claim 1, it is characterized in that: described output compensates by being biased the compensation of output offset realization to current output valve to current base output valve, and described benchmark compensates the compensation by realizing voltage reference value biased reference offset for current voltage reference value.
4. the voltage accuracy auto modification adjusting process of voltage calibration equipment according to claim 3, it is characterized in that: described output offset and benchmark offset are respectively 16 bit data be stored in two bytes, comprise for judging that this output offset and voltage reference value need add up or reduce the conversion position of difference and the difference position for saved differences, described output offset uses 1 bytes store conversion position, and uses 1 bytes store difference position; Described benchmark offset uses 0.5 bytes store conversion position, and uses 1.5 bytes store difference positions.
5. the voltage accuracy auto modification adjusting process of voltage calibration equipment according to claim 4, is characterized in that: the conversion position of described output offset or benchmark offset is stored in a high position for upper byte, and described difference position is stored in the low level of low byte.
6. the voltage accuracy auto modification adjusting process of voltage calibration equipment according to claim 4, is characterized in that: when conversion position is 0, and the benchmark output valve of current channel or voltage reference value add up the difference that difference position stores; When conversion position is 1, the benchmark output valve of current channel or voltage reference value deduct the difference that difference position stores.
7. the voltage accuracy auto modification adjusting process of voltage calibration equipment according to claim 1, is characterized in that: described first permissible value scope is ± 2MV, and described second permissible value scope is ± 10MV, and described benchmark allowed band value is ± 0.25MV.
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| CN108093549A (en) * | 2017-12-26 | 2018-05-29 | 南宁举医疗电子设备股份有限公司 | X-ray tube has an X-rayed heater current upper lower limit value method for self-calibrating |
| CN108226838A (en) * | 2017-11-28 | 2018-06-29 | 南京南瑞继保电气有限公司 | A kind of method realized protection supervisory equipment precision and automatically corrected |
| CN109656390A (en) * | 2018-12-06 | 2019-04-19 | 深圳市天美意科技有限公司 | The reference frequency automatic calibrating method of time writer |
| CN111044964A (en) * | 2019-12-31 | 2020-04-21 | 惠州市蓝微电子有限公司 | Voltage and current reference debugging method and device |
| CN113504005A (en) * | 2021-07-13 | 2021-10-15 | 武汉飞恩微电子有限公司 | Calibration method, device and equipment of pressure sensor and storage medium |
| CN113654715A (en) * | 2021-07-13 | 2021-11-16 | 武汉飞恩微电子有限公司 | Temperature compensation method, device and equipment for water pressure sensor and storage medium |
| CN114895231A (en) * | 2022-07-12 | 2022-08-12 | 南京宏泰半导体科技有限公司 | High-end voltage differential sampling calibration system and method |
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