CN103698691B - Electric car bridge board automatic testing calibration method - Google Patents
Electric car bridge board automatic testing calibration method Download PDFInfo
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- CN103698691B CN103698691B CN201310741247.4A CN201310741247A CN103698691B CN 103698691 B CN103698691 B CN 103698691B CN 201310741247 A CN201310741247 A CN 201310741247A CN 103698691 B CN103698691 B CN 103698691B
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Abstract
The invention discloses a kind of electric car bridge board automatic testing calibration device and method, described electric car bridge board automatic testing calibration device includes power circuit, first single-chip microcomputer, first CAN communication circuit, multiple voltage-references and multichannel switching switch, described power circuit provides power supply for described first single-chip microcomputer and described bridge board, described first CAN communication circuit is connected with described first single-chip microcomputer, the plurality of voltage-reference is for providing multiple different current reference sampled signal, multiple passages of described multichannel switching switch are connected with multiple described voltage-references respectively, the signal input part of described multichannel switching switch is connected with the switching control port of described first single-chip microcomputer.Electric car bridge board provided by the present invention automatic testing calibration device and method, it is possible to achieve bridge board current sample automatically detects and calibrates, thus improves detection efficiency and precision, it is ensured that concordance, meets the requirement of industrial applications.
Description
Technical field
The present invention relates to electric automobile field, particularly relate to a kind of automatic testing calibration of electric car bridge board
Device and method.
Background technology
Bridge board is a circuit board in electric automobile for communication, be responsible for by battery management system (BMS),
Charging system and display system couple together, with the battery case BMS installed on battery case module detected
The information conversion signals such as monomer voltage, electric current, electricity and battery case total voltage, electric current, electricity pass to show
Display screen, charger.After bridge board has produced, need whether the performance indications detecting various piece reach to set
Meter requirement.The detection of existing bridge board and calibration steps use every to bridge board of manual type, i.e. workman
Performance indications detect and calibrate, not only inefficiency, and degree of accuracy is low, and concordance is poor, uncomfortable
Answer the requirement of industrialized production.
Summary of the invention
For above-mentioned prior art present situation, the technical problem to be solved is, it is provided that a kind of electronic
Grid motor bridge plate automatic testing calibration method and device, bridge board current sample can be detected school by automatically
Standard, to improve testing calibration efficiency and precision, it is ensured that concordance.
In order to solve above-mentioned technical problem, a kind of electric car bridge board provided by the present invention detects school automatically
Standard apparatus, including power circuit, the first single-chip microcomputer, the first CAN communication circuit, multiple voltage-reference and
Multichannel switching switch, described power circuit provides power supply, institute for described first single-chip microcomputer and described bridge board
Stating the first CAN communication circuit to be connected with described first single-chip microcomputer, the plurality of voltage-reference is used for providing many
Individual different current reference sampled signal, multiple passages of described multichannel switching switch are described with multiple respectively
Voltage-reference is connected, the signal input part of described multichannel switching switch and the switching of described first single-chip microcomputer
Control port to connect.
Wherein in an embodiment, described automatic testing calibration device also includes display device, and this display fills
Put and be connected with described first single-chip microcomputer.
Wherein in an embodiment, described automatic testing calibration device also includes alarm device, and this warning fills
Put the outfan with described first single-chip microcomputer to be connected.
Wherein in an embodiment, the quantity of described voltage-reference is n, and 3≤n≤6.
Wherein in an embodiment, described automatic testing calibration device also includes power consumption detection circuit, its bag
Including sampling resistor and the first signal conditioning circuit, described sampling resistor is connected on described power circuit, described
The voltage input end of the first signal conditioning circuit is connected to described sampling resistor two ends, described first signal condition electricity
The signal output part on road is connected with described first single-chip microcomputer.
Wherein in an embodiment, described automatic testing calibration device also includes that temperature sampling calibrates circuit,
It includes temperature sensors of high precision and secondary signal modulate circuit, the signal of described secondary signal modulate circuit
Input connects the outfan of described temperature sensors of high precision, and the signal of described secondary signal modulate circuit is defeated
Go out end to be connected with described first single-chip microcomputer.
Wherein in an embodiment, described automatic testing calibration device also includes dry contact testing circuit, its
Including power supply VCC, divider resistance, the 3rd signal conditioning circuit and display lamp, described divider resistance, described
Bridge board dry contact port and described display lamp are connected between described power supply VCC and reference ground, and the described 3rd
The signal input part of signal conditioning circuit be connected to described divider resistance and described bridge board dry contact port it
Between, the signal output part of described 3rd signal conditioning circuit is connected with described first single-chip microcomputer.
A kind of side using above-mentioned automatic testing calibration device testing calibration bridge board provided by the present invention
Method, described bridge board includes second singlechip, by the power input of described power circuit Yu described bridge board
Connect, described first CAN communication circuit is connected with the second CAN communication circuit of described bridge board, will
The common port of described switching switch is connected with described bridge board current sample interface, and described method includes following step
Rapid:
S1, described first single-chip microcomputer sequentially turn on multiple passages of described multichannel switching switch, it is provided that different
Current reference sampled signal to the current sample interface of described bridge board；
After described current reference sampled signal is nursed one's health by S2, the current sampling signal modulate circuit of described bridge board,
Send into described second singlechip through ADC analog to digital conversion circuit and calculate the testing current value of correspondence, and pass through institute
State the second CAN communication circuit and described first CAN communication circuit is transferred to described first single-chip microcomputer；
S3, described first single-chip microcomputer are true by each described testing current value and corresponding described voltage-reference
Real current value carries out linear fit, and calculates correction coefficient, and by described correction coefficient by described first
CAN communication circuit and described second CAN communication circuit are delivered to described second singlechip；
S4, described second singlechip utilize described correction coefficient to calibrate current sample.
Wherein in an embodiment, described method also includes the following step being arranged at after described step S4
Rapid:
S5, described first single-chip microcomputer switch certain road current reference sampled signal electric current to described bridge board at random
Sampling Interface, after described second singlechip utilizes described correction coefficient to calibrate described current reference sampled signal
Testing current value after being calibrated, and by the first CAN communication circuit and described second CAN communication electricity
Road is transferred to described first single-chip microcomputer；
S6, described first single-chip microcomputer are true by testing current value and described current reference sampled signal after calibration
Real current value compares, and judge comparative result whether in the range of specification error, if it is, calibration
Complete, if it is not, then output alarm signal.
Wherein in an embodiment, described method also includes bridge board SOC detecting step, it include with
Lower step:
After described bridge board current sample has been calibrated, described first single-chip microcomputer is according to the time set and electric current
Multichannel switching switch described in curve timing controlled switched conductive, it is provided that different current reference sampled signals is extremely
The current sample interface of described bridge board；
Described second singlechip records SOC test value, and by described second CAN communication circuit and described
First CAN communication circuit is transferred to described first single-chip microcomputer；
Described SOC test value is compared by described first single-chip microcomputer with SOC actual value, obtains SOC by mistake
Difference.
By electric car bridge board provided by the present invention automatic testing calibration device and method, it is possible to achieve
Bridge board current sample automatically detects and calibrates, thus improves detection efficiency and precision, it is ensured that concordance,
Meet the requirement of industrial applications.
Other beneficial effect that the present invention is had will illustrate in this specification detailed description of the invention part.
Accompanying drawing explanation
Fig. 1 is the former of the electric car bridge board automatic testing calibration device in one of them embodiment of the present invention
Reason figure.
In the most each figure, 100, automatic testing calibration device；101, the first single-chip microcomputer；102, the first signal
Modulate circuit；103, the 3rd signal conditioning circuit；104, the first CAN communication circuit；105, the second letter
Number modulate circuit；106, first amplifies driving control circuit；107, multichannel switching switch；108、RS485
Communicating circuit；109, a PWR circuit；110, the 2nd PWR circuit；111, second amplifies driving control
Circuit processed；112, buzzer；113, the first voltage-reference；114, the second voltage-reference；115,
Three voltage-references；116, the 4th voltage-reference；117, the 5th voltage-reference；118, divider resistance；
119, display lamp；120, temperature sensors of high precision；121, DC/AC module；122, LCD display；
123, power supply VCC；124, sampling resistor；200, bridge board；201, second singlechip；202, electric current
Sampled signal modulate circuit；203, the second CAN communication circuit；204, temperature sampling signal conditioning circuit；
205, dry contact；206, the 3rd PWR circuit；207, bridge board temperature sensor.
Detailed description of the invention
Below with reference to the accompanying drawings and in conjunction with the embodiments the present invention is described in detail.It should be noted that not
In the case of conflict, the feature in following embodiment and embodiment can be mutually combined.
The schematic diagram of the electric car bridge board automatic testing calibration device in one of them embodiment of the present invention is such as
Shown in Fig. 1, automatic testing calibration device 100 includes power circuit, the first single-chip microcomputer the 101, the oneth CAN
Communicating circuit 104, multiple voltage-reference and multichannel switching switch 107, wherein, described power circuit is
First single-chip microcomputer 101 and bridge board 200 provide power supply, and this power circuit includes DC/AC module 121.The
The power input of one single-chip microcomputer 101 is connected with power circuit by a PWR circuit 109.
Described first CAN communication circuit 104 is connected with described first single-chip microcomputer 101, a described CAN
Communicating circuit 104 is connected with the second CAN communication circuit 203 of bridge board 200, and the first single-chip microcomputer 101 leads to
Cross the first CAN communication circuit 104 send and receive the second CAN communication electricity from described bridge board 200
The information on road 203, thus realize data communication.
The plurality of voltage-reference is used for providing different current reference sampled signals, more preferably, described electricity
The quantity of pressure a reference source is n, and 3≤n≤6.The quantity of the voltage-reference in the present embodiment is 5, point
It is not first voltage-reference the 113, second voltage-reference 114, tertiary voltage a reference source the 115, the 4th electricity
Pressure a reference source 116 and the 5th voltage-reference 117, the voltage of the first voltage-reference 113 is 5V, corresponding
Electric current is 500A；The voltage of the second voltage-reference 114 is 2.5V, corresponding current 250A；Tertiary voltage
The voltage of a reference source 115 is 0V, and corresponding current is 0A；The voltage of the 4th voltage-reference 116 is-2.5V,
Corresponding current is-250A；The voltage of the 5th voltage-reference 117 is-5V, and corresponding current is-500A.
Multiple passages of described multichannel switching switch 107 are connected with multiple described voltage-references respectively, institute
The signal input part stating multichannel switching switch 107 drives control circuit 106 and described list by the first amplification
The switching control port of sheet machine connects.Described multichannel switching switch 107 is for optionally by multiple described
In voltage-reference one is connected with the current sampling signal modulate circuit 202 of described bridge board 200, from
And different current reference sampled signals is provided, it is preferable that the error ＜ 2mV of current reference sampled signal.This
The passage of the multichannel switching switch 107 in embodiment is 5.
More preferably, described automatic testing calibration device 100 also includes display device, the signal of this display device
Input is connected with described first single-chip microcomputer 101 by RS485 communicating circuit 108, the electricity of this display device
Source input is connected with described power circuit through the 2nd PWR circuit 110.Display device is preferably LCD and shows
Display screen 122.
More preferably, described automatic testing calibration device 100 also includes alarm device, and this alarm device is by the
Two amplify driving control circuit 111 is connected with the outfan of described first single-chip microcomputer 101.Alarm device is preferred
For buzzer 112.
When using the automatic testing calibration device 100 testing calibration bridge board 200 in above-described embodiment, first will
The bridge board 200 welded downloads test program by download program mouth, in order to can be with automatic testing calibration
Device 100 communicates alternately, then by the 3rd PWR electricity of described power circuit with described bridge board 200
Road 206 connects, and is led to by the 2nd CAN of described first CAN communication circuit 104 with described bridge board 200
News circuit 203 connects, and is adjusted with described bridge board 200 current sampling signal by the common port of described switching switch
Reason circuit 202 connects.Power on then to automatic testing calibration device 100, click on and start testing button, open
Beginning testing calibration process.Concrete testing calibration method is as follows:
Step S1, described first single-chip microcomputer 101 sequentially turn on the multiple logical of described multichannel switching switch 107
Road, it is provided that the current sample interface of different current reference sampled signal to described bridge board 200；
Described current reference is adopted by step S2, the current sampling signal modulate circuit 202 of described bridge board 200
After sample signal condition, send into second singlechip 201 through ADC analog to digital conversion circuit and calculate the electric current survey of correspondence
Examination value, and it is transferred to institute by the first CAN communication circuit 104 and described second CAN communication circuit 203
State the first single-chip microcomputer 101；
Step S3, described first single-chip microcomputer 101 are by each described testing current value and corresponding described voltage base
The real current value in quasi-source carries out linear fit, and calculates correction coefficient, and described correction coefficient is passed through institute
State the first CAN communication circuit 104 and described second CAN communication circuit 203 is delivered to described second monolithic
Machine 201；
Step S4, described second singlechip 201 utilize described correction coefficient to calibrate current sample.
More preferably, in order to more accurately calibrate bridge board 200 current sample, also include being arranged at described step
Following steps after rapid S4:
S5, described first single-chip microcomputer 101 switch certain road current reference sampled signal at random to described bridge board 200
Current sample interface, described second singlechip 201 utilizes described correction coefficient to sample described current reference
Testing current value after being calibrated after signal calibration, and by the first CAN communication circuit 104 and described the
Two CAN communication circuit 203 are transferred to described first single-chip microcomputer 101；
S6, described first single-chip microcomputer 101 are by the testing current value after calibration and described current reference sampled signal
Real current value compare, and judge comparative result whether in the range of specification error, if it is,
Calibration completes, and LCD display 122 shows have been calibrated automatically；Whereas if no, LCD display 122
Exception, meanwhile, then output alarm signal are calibrated in display automatically, are reported to the police by buzzer 112, remind
Staff calibrates fault automatically.
As can be seen here, the automatic testing calibration device 100 of electric car bridge board 200 provided by the present invention and
Method, it is possible to achieve bridge board 200 current sample automatically detects and calibrates, thus improve detection efficiency and
Precision, it is ensured that concordance, meets the requirement of industrial applications；And, simple to operate.
Preferably, described method also includes bridge board SOC (State Of Charge, dump energy) detection step
Suddenly, comprise the following steps:
After described bridge board 200 current sample has been calibrated, described first single-chip microcomputer 101 according to set time
Between with described in current curve timing controlled switched conductive multichannel switching switch 107, it is provided that different current references
The current sample interface of sampled signal extremely described bridge board 200；
Described second singlechip 201 records SOC test value, and by described second CAN communication circuit 203
It is transferred to described first single-chip microcomputer 101 with described first CAN communication circuit 104；
Described SOC test value is compared by described first single-chip microcomputer 101 with SOC actual value, obtains SOC
Error amount, transmits to LCD display 122 through RS485 communicating circuit 108 and shows.
As can be seen here, the automatic testing calibration device 100 of electric car bridge board 200 provided by the present invention and
Method, it is also possible to realize bridge board SOC and automatically detect, thus improve detection efficiency and precision, it is ensured that
Concordance, meets the requirement of industrial applications.
More preferably, described automatic testing calibration device 100 also includes power consumption detection circuit, and it includes sampling electricity
Resistance 124 and the first signal conditioning circuit 102, described sampling resistor 124 is connected on described power circuit, institute
State the voltage input end of the first signal conditioning circuit 102 and be connected to described sampling resistor 124 two ends, described first
The signal output part of signal conditioning circuit 102 is connected with the ADC input of described first single-chip microcomputer 101.Adopt
Sample resistance 124 is converted into voltage signal to current sample, via the first signal conditioning circuit 102 to by voltage
Signal condition is to zone of reasonableness, through 12 ADC analog to digital conversion circuits process feedings of the first single-chip microcomputer 101
First single-chip microcomputer 101.First single-chip microcomputer 101 internal processes carries out AD sampling and calculating to sending into analogue signal
Output current value and power consumption number (P=UI), transmit out result of calculation to LCD through RS485 communicating circuit 108
Display screen 122.If electric current and power consumption are in the reasonable scope, then LCD display 122 shows bridge board 200
Power consumption is normal, otherwise shows exception；Meanwhile, the first single-chip microcomputer 101 is reported by buzzer 112
Alert, remind staff's power consumption fault.
More preferably, described automatic testing calibration device 100 also includes that temperature sampling calibrates circuit, and it includes height
Accuracy temperature sensor 120 and secondary signal modulate circuit 105, the letter of described secondary signal modulate circuit 105
Number input connects the outfan of described temperature sensors of high precision 120, described secondary signal modulate circuit 105
Signal output part be connected with the ADC input of described first single-chip microcomputer 101.Bridge board 200 is by bridge board
Temperature sensor 207 collecting temperature data carry out conditioning through temperature sampling signal conditioning circuit 204 and are sent to
Two single-chip microcomputers 201, second singlechip 201 is internal carries out calculated temperature information data, by first
CAN communication circuit 104 and the second CAN communication circuit 203 are internal to second singlechip 201；In high precision
Temperature sensor 120 collecting temperature data carry out conditioning through high-precision temperature sampled signal modulate circuit 204 and send
Entering and calculate to the first single-chip microcomputer 101 is internal, draw high-precision temperature information data, both compare
Calculating error amount, then this error amount is passed through the first CAN communication circuit 104 He by the first single-chip microcomputer 101
Second CAN communication circuit 203 is transmitted to second singlechip 201, the temperature number within second singlechip 201
The most calibrated according to carrying out, and calibration information is transferred to LCD display by RS485 communicating circuit 108
122 show.
More preferably, described automatic testing calibration device 100 also includes dry contact 205 testing circuit, and it includes
Power supply VCC123, divider resistance the 118, the 3rd signal conditioning circuit 103 and display lamp 119, described dividing potential drop
Resistance 118, described bridge board 200 dry contact 205 port and described display lamp 119 are connected on described power supply
Between VCC123 and reference ground, the signal input part of described 3rd signal conditioning circuit 103 is connected to described point
Between piezoresistance 118 and described bridge board 200 dry contact 205 port, described 3rd signal conditioning circuit 103
Signal output part be connected with the I/O port of described first single-chip microcomputer 101.When bridge board 200 dry contact 205
Port Guan Bi time, power supply VCC123 through bridge board 200 dry contact 205 port to LED light 119
Power supply returns to form loop with reference to ground GND, and LED light 119 is luminous, the I/O of the first single-chip microcomputer 101
Low level detected；When bridge board 200 dry contact 205 port disconnects, LED light 119 does not works,
The IO of the first single-chip microcomputer 101 detects high level.Automatically testing calibration device 100 is led to by a CAN
News circuit 104 and the second CAN communication circuit 203 send dry contact 205 switch command to second singlechip
201, within the time of regulation, if the level detected is consistent with sending order, then existed by RS485 circuit
LCD display dry contact 205 output function is normal, otherwise display is abnormal, meanwhile, and the first single-chip microcomputer 101
Reported to the police by buzzer 112, remind staff's dry contact 205 fault.
Additionally, the automatic testing calibration device 100 in the present embodiment can also realize bridge board CAN communication electricity
Road is detected automatically, and detection process is as follows: the first single-chip microcomputer 101 is sent by the first CAN communication circuit 104
With receive the information of the second CAN communication circuit 203 from bridge board 200, if after sending test information,
Within the time of regulation, receive effective return information of bridge board 200, then show bridge board CAN communication function
Normally, transmit to LCD display 122 through RS485 communicating circuit 108 and show that CAN communication is normal；Instead
It, display CAN communication is abnormal, and meanwhile, the first single-chip microcomputer 101 is reported to the police by buzzer 112,
Remind staff's CAN communication fault.
To sum up, the automatic testing calibration device 100 in the embodiment of the present invention, can automatically quickly testing calibration electronic
The various functions of grid motor bridge plate: power consumption, CAN communication, current sample, SOC, temperature sampling and dry joint
Point output port, and in time various functions situation is shown inside LCD, make bad problem obtain accurately
Quickly location, thus improve the debugging step process that electric car bridge board is complicated in process of production, keep away
Exempt from waste of time, improve production efficiency and quality.
Embodiment described above only have expressed the several embodiments of the present invention, and it describes more 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 this area
Those of ordinary skill for, without departing from the inventive concept of the premise, it is also possible to make some deformation and
Improving, these broadly fall into protection scope of the present invention.
Claims (8)
1. the method using automatic testing calibration device testing calibration bridge board, described bridge board includes the
Two single-chip microcomputers, it is characterised in that described automatic testing calibration device include power circuit, the first single-chip microcomputer,
First CAN communication circuit, multiple voltage-reference and multichannel switching switch, described power circuit is described
First single-chip microcomputer and described bridge board provide power supply, described first CAN communication circuit and described first single-chip microcomputer
Being connected, the plurality of voltage-reference is for providing multiple different current reference sampled signal, described manifold
Multiple passages of road switching switch are connected with multiple described voltage-references respectively, described multichannel switching switch
Signal input part be connected with the switching control port of described first single-chip microcomputer；By described power circuit and described net
The power input of bridge plate connects, by the 2nd CAN of described first CAN communication circuit Yu described bridge board
Communicating circuit connects, and is connected with described bridge board current sample interface by the common port of described switching switch, institute
The method of stating comprises the following steps:
S1, described first single-chip microcomputer sequentially turn on multiple passages of described multichannel switching switch, it is provided that different
Current reference sampled signal to the current sample interface of described bridge board；
After described current reference sampled signal is nursed one's health by S2, the current sampling signal modulate circuit of described bridge board,
Send into described second singlechip through ADC analog to digital conversion circuit and calculate the testing current value of correspondence, and pass through institute
State the second CAN communication circuit and described first CAN communication circuit is transferred to described first single-chip microcomputer；
S3, described first single-chip microcomputer are true by each described testing current value and corresponding described voltage-reference
Real current value carries out linear fit, and calculates correction coefficient, and by described correction coefficient by described first
CAN communication circuit and described second CAN communication circuit are delivered to described second singlechip；
S4, described second singlechip utilize described correction coefficient to calibrate current sample；
S5, described first single-chip microcomputer switch certain road current reference sampled signal electric current to described bridge board at random
Sampling Interface, after described second singlechip utilizes described correction coefficient to calibrate described current reference sampled signal
Testing current value after being calibrated, and by the first CAN communication circuit and described second CAN communication electricity
Road is transferred to described first single-chip microcomputer；
S6, described first single-chip microcomputer are true by testing current value and described current reference sampled signal after calibration
Real current value compares, and judge comparative result whether in the range of specification error, if it is, calibration
Complete, if it is not, then output alarm signal.
Method the most according to claim 1, it is characterised in that also include bridge board SOC detecting step,
It comprises the following steps:
After described bridge board current sample has been calibrated, described first single-chip microcomputer is according to the time set and electric current
Multichannel switching switch described in curve timing controlled switched conductive, it is provided that different current reference sampled signals is extremely
The current sample interface of described bridge board；
Described second singlechip records SOC test value, and by described second CAN communication circuit and described
First CAN communication circuit is transferred to described first single-chip microcomputer；
Described SOC test value is compared by described first single-chip microcomputer with SOC actual value, obtains SOC by mistake
Difference.
Method the most according to claim 1, it is characterised in that described automatic testing calibration device also wraps
Including display device, this display device is connected with described first single-chip microcomputer.
Method the most according to claim 1, it is characterised in that described automatic testing calibration device also wraps
Including alarm device, this alarm device is connected with the outfan of described first single-chip microcomputer.
Method the most according to claim 1, it is characterised in that the quantity of described voltage-reference is n,
And 3≤n≤6.
Method the most according to claim 1, it is characterised in that described automatic testing calibration device also wraps
Including power consumption detection circuit, it includes sampling resistor and the first signal conditioning circuit, and described sampling resistor is connected on
On described power circuit, the voltage input end of described first signal conditioning circuit is connected to described sampling resistor two ends,
The signal output part of described first signal conditioning circuit is connected with described first single-chip microcomputer.
Method the most according to claim 1, it is characterised in that described automatic testing calibration device also wraps
Including temperature sampling calibration circuit, it includes temperature sensors of high precision and secondary signal modulate circuit, described the
The outfan of the signal input part described temperature sensors of high precision of connection of binary signal modulate circuit, described second
The signal output part of signal conditioning circuit is connected with described first single-chip microcomputer.
Method the most according to claim 1, it is characterised in that described automatic testing calibration device also wraps
Including dry contact testing circuit, it includes power supply VCC, divider resistance, the 3rd signal conditioning circuit and display lamp,
Described divider resistance, described bridge board dry contact port and described display lamp are connected on described power supply VCC and ginseng
Examining between ground, the signal input part of described 3rd signal conditioning circuit is connected to described divider resistance and described net
Between bridge plate dry contact port, the signal output part of described 3rd signal conditioning circuit and described first single-chip microcomputer
Connect.
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| CN201310741247.4A CN103698691B (en) | 2013-12-27 | 2013-12-27 | Electric car bridge board automatic testing calibration method |
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| CN106569922B (en) * | 2016-10-17 | 2020-01-24 | 惠州市蓝微电子有限公司 | Electric quantity management IC burning calibration verification method and device |
| CN107526020A (en) * | 2017-07-24 | 2017-12-29 | 清华大学 | A kind of automatic checkout system of the acoustic logging signal acquisition circuit based on SoC |
| CN107894562A (en) * | 2017-12-15 | 2018-04-10 | 北斗航天汽车（北京）有限公司 | Automobile circuit plate and its detecting system |
| CN108802543B (en) * | 2018-08-17 | 2021-06-18 | 微特技术有限公司 | Standardized calibration system and method for bridge signal conversion module |
| CN110426645B (en) * | 2019-08-22 | 2024-04-09 | 广东省洛仑兹技术股份有限公司 | Multichannel charge-discharge parameter calibration method and system |
| CN113342121A (en) * | 2020-11-10 | 2021-09-03 | 明峰医疗系统股份有限公司 | Multi-channel PET power supply automatic calibration circuit and calibration method |
| CN113791562A (en) * | 2021-09-13 | 2021-12-14 | 刘丽丽 | Digital implementation method for sampling high-side IGBT temperature and bus voltage of motor controller |
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| US4541065A (en) * | 1982-09-14 | 1985-09-10 | John Fluke Mfg. Co., Inc. | Direct volts calibrator |
| US7102417B2 (en) * | 2004-11-05 | 2006-09-05 | International Business Machines Corporation | Integrated circuit die including a temperature detection circuit, and system and methods for calibrating the temperature detection circuit |
| CN102565743A (en) * | 2012-01-16 | 2012-07-11 | 安徽力高新能源技术有限公司 | Voltage automatic calibration device |
| CN203705602U (en) * | 2013-12-27 | 2014-07-09 | 珠海银隆电器有限公司 | Automatic detection and calibration device for bridge board of electric vehicle |
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