Voltage calibration method, device, medium and electronic equipment

Abstract

The present invention provides a voltage calibration method for a test board, which is applied to the test board, and the test board is connected to the calibration board through a signal connector. The method includes: receiving an instruction to perform voltage calibration, wherein the test board includes n calibration gears; according to the instruction, outputting a first voltage corresponding to the first calibration gear; obtaining a first sampled voltage corresponding to the first calibration gear from the calibration board; calibrating the first sampled voltage according to the first voltage, and calculating the calibration accuracy; when the calibration accuracy satisfies a value greater than a first set threshold, recalibrating the first calibration gear until the calibration accuracy satisfies a value less than or equal to the first set threshold; and then calibrating the second calibration gear. The method realizes automatic data adjustment through data intercommunication between the test board and the calibration board, and can automatically switch the calibration gear during the calibration process, which can avoid the trouble of constantly flying wires due to the need to test different voltages, and reduces the time cost of test board calibration.

Description

Technical Field

[0001] The present invention relates to the technical field of integrated circuit testing, and in particular to a method, device, medium and electronic equipment for voltage calibration. Background Art

[0002] In chip production, each chip needs to be tested for various test items after packaging, and can only enter the market after passing the test. Among the various test items before the chip leaves the factory, the chip working voltage test is particularly important. The voltage test can not only test whether the chip voltage supply meets the chip power supply requirements, but also determine the working status of the chip through voltage tests in different time periods. After the chip is packaged, the corresponding structural components (SOCKET) are used to lead the test signal to the corresponding test circuit on the chip test carrier. The chip SLT test system is composed of a test carrier with various functional test boards combined with upper and lower computer programs.

[0003] During the chip testing process, in order to ensure the accuracy of the chip voltage test, the voltage test circuit on the test board itself is required to reach a certain accuracy, so each test board needs to be calibrated. At present, the conventional calibration method is that after the test board is produced, the tester uses the instrument to calibrate the voltage test circuit on the test board one by one. When the voltage circuit on the test board has multiple gears, the tester needs to frequently manually switch the calibration connection point between the instrument and the test board during the calibration process. If there is no reserved calibration interface, it will be more troublesome to use the instrument for calibration operation, thereby increasing the calibration time. This method is time-consuming and labor-intensive, occupies a large amount of instrument resources, and manual repeated test calibration is prone to introduce errors caused by improper operation. In addition, instruments are generally bulky and have high value. Some complex instruments require operators to have certain professional capabilities. At the same time, the use environment of instruments is also limited, and it is difficult to complete the calibration work in multiple occasions. Therefore, it is necessary to provide a new voltage calibration method to solve the above problems. Summary of the invention

[0004] The object of the present invention is to provide a voltage calibration method, device, medium and electronic equipment, so as to realize accurate calibration of a voltage test circuit on a test board.

[0005] In a first aspect, a voltage calibration method for a test board provided by the present invention is applied to a test board, wherein the test board is connected to a calibration board via a signal connector, and the method comprises: S1: receiving an instruction to perform voltage calibration, wherein the test board comprises n calibration gears, and n is a positive integer; S2: outputting a first voltage corresponding to a first calibration gear according to the instruction; S3: obtaining a first sampled voltage corresponding to the first calibration gear from the calibration board; S4: calibrating the first sampled voltage according to the first voltage, and calculating a calibration accuracy; S5: when the calibration accuracy satisfies a condition greater than a first set threshold, returning to execute S2 to S4 until the calibration accuracy satisfies a condition less than or equal to the first set threshold; S6: outputting a second voltage corresponding to a second calibration gear; S7: obtaining a second sampled voltage corresponding to the second calibration gear from the calibration board; S8: calibrating the second sampled voltage according to the second voltage, and calculating a calibration accuracy;

[0006] S9: When the calibration accuracy satisfies and is greater than the first set threshold, return to execute S6 to S8 until the calibration accuracy is less than or equal to the first set threshold.

[0007] The beneficial effect of the voltage calibration method of the test board provided by the present invention is that automatic data adjustment is achieved through data communication between the test board and the calibration board to ensure data accuracy. Furthermore, the test board and the calibration board are connected through a signal connector so that when calibrating a test board with multiple gears, the calibration gear can be automatically switched during the calibration process to complete the voltage calibration, which can avoid the trouble of constantly flying wires due to the need to test different voltages, reduce the time cost of test board calibration, and thus shorten the cycle time of the entire SLT test. Automated voltage calibration of the test board through the calibration board can save the trouble of calibration through heavy instruments.

[0008] In a possible embodiment, after calibrating the first sampling voltage according to the first voltage, the method further includes: outputting a first verification voltage corresponding to the first calibration gear; acquiring a verification sampling voltage corresponding to the first verification voltage from the calibration board;

[0009] The calculating of the calibration accuracy comprises: comparing the first verification voltage and the verification sampling voltage, and calculating the calibration accuracy according to the comparison result; after calibrating the second sampling voltage according to the second voltage, the further comprising: outputting a second verification voltage corresponding to the second calibration gear; acquiring a verification sampling voltage corresponding to the second verification voltage from the calibration board;

[0010] The calculating the calibration accuracy includes: comparing the second verification voltage with the verification sampling voltage, and calculating the calibration accuracy according to the comparison result.

[0011] In another possible embodiment, the signal connector is an HT3 connector.

[0012] In a second aspect, the present invention further provides a voltage calibration method for a calibration board, which is applied to the calibration board, and the calibration board is connected to a calibration power supply, and the method comprises: S10: receiving an instruction to perform voltage calibration, wherein the calibration board comprises k gears, and k is a positive integer; S20: sampling the voltage corresponding to the first gear of the calibration power supply to obtain a first reference voltage according to the instruction; S30: reading the first precise voltage corresponding to the first gear of the calibration power supply; S40: calibrating the first reference voltage according to the first precise voltage, and calculating the calibration accuracy; S50: when the calibration accuracy satisfies and is greater than a second set threshold, returning to execute S20 to S40 until the calibration accuracy satisfies and is less than or equal to the second set threshold; S60: sampling the voltage corresponding to the second gear of the calibration power supply to obtain a second reference voltage; S70: reading the second precise voltage corresponding to the second gear of the calibration power supply; S80: calibrating the second reference voltage according to the second precise voltage, and calculating the calibration accuracy; S90: when the calibration accuracy satisfies and is greater than the second set threshold, returning to execute S60 to S80 until the calibration accuracy satisfies and is less than or equal to the second set threshold.

[0013] The beneficial effect of the voltage calibration method of the calibration board provided by the present invention is that it can be connected to an external calibration power supply to perform high-precision calibration on the calibration board itself, ensuring that the calibration board itself has a very high precision and improving the test quality of the entire automated calibration.

[0014] In a third aspect, the present invention further provides a voltage calibration device for a test board, which is applied to the test board, and the test board is connected to the calibration board through a signal connector, and the device includes: a first receiving unit, which is used to receive an instruction to perform voltage calibration, wherein the test board includes n calibration gears, and n is a positive integer; an output unit, which is used to output voltages corresponding to the n calibration gears according to the instruction, including: outputting a first voltage corresponding to the first calibration gear, and, outputting a second voltage corresponding to the second calibration gear; an acquisition unit, which is used to acquire a sampled voltage corresponding to the calibration gear from the calibration board, including: acquiring a first sampled voltage corresponding to the first calibration gear; voltage, and, obtain a second sampling voltage corresponding to the second calibration gear; a first calibration unit, used to calibrate the sampling voltage according to the voltages corresponding to the n calibration gears, and calculate the calibration accuracy; a first judgment unit, used to judge whether the calibration accuracy of each calibration gear satisfies and is greater than a first set threshold value, when the calibration accuracy of the calibration gear satisfies and is greater than the first set threshold value, execute the output unit to output the voltage corresponding to the calibration gear, the acquisition unit obtains the sampling voltage corresponding to the calibration gear, and the first calibration unit performs a calibration operation on the calibration gear until the calibration accuracy of the calibration unit satisfies and is less than or equal to the first set threshold value.

[0015] The output unit also includes: outputting a first verification voltage corresponding to the first calibration gear, and outputting a second verification voltage corresponding to the second calibration gear; the acquisition unit also includes: acquiring a verification sampling voltage corresponding to the first calibration gear, and acquiring a verification sampling voltage corresponding to the second calibration gear; the first calibration unit calculates the calibration accuracy, specifically for: comparing the verification voltage corresponding to the calibration gear and the verification sampling voltage, and calculating the calibration accuracy according to the comparison result.

[0016] The signal connector is an HT3 connector.

[0017] In a fourth aspect, the present invention further provides a voltage calibration device for a calibration board, which is applied to the calibration board and is characterized in that the calibration board is connected to a calibration power supply, and the device comprises: a second receiving unit, for receiving an instruction to perform voltage calibration, wherein the calibration board comprises k gears, and k is a positive integer; a sampling unit, for sampling the voltages of the calibration power supply corresponding to the k gears according to the instruction to obtain a reference voltage; a reading unit, for reading the precise voltages of the calibration power supply corresponding to the k gears; a second calibration unit, for calibrating the reference voltage according to the precise voltage and calculating the calibration accuracy; a second judgment unit, for judging whether the calibration accuracy satisfies a second set threshold value, and when the calibration accuracy satisfies a second set threshold value, the sampling unit samples the voltage of the calibration power supply corresponding to the gear to obtain a reference voltage, the reading unit reads the precise voltage of the calibration power supply corresponding to the gear, and the second calibration unit performs a calibration operation on the gear until the calibration accuracy satisfies a condition that the voltage is less than or equal to the second set threshold value.

[0018] In a fifth aspect, the present invention further provides a computer-readable storage medium having a computer program stored thereon, and when the computer program is executed by a processor, the voltage calibration method of the above-mentioned test board or the voltage calibration method of the calibration board is implemented.

[0019] In a sixth aspect, the present invention also provides an electronic device, comprising: a processor and a memory; the memory is used to store a computer program; the processor is used to execute the computer program stored in the memory, so that the electronic device executes the voltage calibration method of the above-mentioned test board or the voltage calibration method of the calibration board.

[0020] For the beneficial effects of the third to sixth aspects, reference may be made to the description of the first to second aspects. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 A schematic diagram of a flow chart of a voltage calibration method for a test board provided in an embodiment of the present invention;

[0022] Figure 2 A schematic diagram of the connection structure of the test board and the calibration board provided in an embodiment of the present invention;

[0023] Figure 3 A schematic flow chart of a voltage calibration method for a calibration board provided in an embodiment of the present invention;

[0024] Figure 4 A schematic diagram of the structure of a calibration board provided in an embodiment of the present invention;

[0025] Figure 5 A schematic flow chart of another voltage calibration method for a test board provided by an embodiment of the present invention;

[0026] Figure 6 A schematic flow chart of another voltage calibration method for a calibration board provided in an embodiment of the present invention;

[0027] Figure 7 A schematic diagram of a voltage calibration device for a test board provided in an embodiment of the present invention;

[0028] Figure 8 A schematic diagram of a voltage calibration device of a calibration board provided in an embodiment of the present invention;

[0029] Fig. 9 A schematic diagram of the structure of an electronic device provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0030] In order to make the purpose, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention. Unless otherwise defined, the technical terms or scientific terms used herein should be understood by people with general skills in the field to which the present invention belongs. "Including" and similar words used in this article mean that the elements or objects appearing before the word include the elements or objects listed after the word and their equivalents, without excluding other elements or objects.

[0031] In view of the problems existing in the prior art, embodiments of the present invention provide a voltage calibration method, device, medium and electronic device.

[0032] The embodiment of the present invention provides a voltage calibration method for a test board. Figure 1 The voltage calibration method of the test board of this embodiment is applied to the test board, wherein the test board is connected to the calibration board via a signal connector. The method specifically comprises:

[0033] S1: receiving an instruction to perform voltage calibration, wherein the test board includes n calibration positions, and n is a positive integer.

[0034] In S1, in a possible embodiment, the test board is connected to a host computer, and the test board receives an instruction to perform voltage calibration sent by the host computer. In a specific embodiment, the host computer may be a computer.

[0035] In a possible embodiment, the test board is connected to a voltage calibration start switch, and after the voltage calibration start switch is triggered, the test board receives an instruction to perform voltage calibration.

[0036] S2: According to the instruction, output a first voltage corresponding to the first calibration position.

[0037] S3: Obtain a first sampling voltage corresponding to a first calibration position from the calibration board.

[0038] In S3, in a possible embodiment, after the test board outputs a voltage corresponding to the first calibration position, the calibration board will sample the first voltage, and then the calibration board will reply the sampled voltage value to the test board, so that the test board can obtain the first sampled voltage corresponding to the first calibration position from the calibration board.

[0039] In a possible embodiment, the test board outputs m first voltages, where m is a positive integer. After the test board outputs a first voltage, the calibration board performs sampling, and then the calibration board returns the sampled voltage value to the test board so that the test board obtains the corresponding first sampled voltage; after the test board outputs another first voltage, the calibration board performs sampling, and then the calibration board returns the sampled voltage value to the test board so that the test board obtains the corresponding first sampled voltage, until the test board outputs all the m first voltages and obtains the first sampled voltages corresponding to the m first voltages from the calibration board.

[0040] In a specific embodiment, the first voltage output by the test board is a voltage terminal value of a first calibration level.

[0041] S4: Calibrate the first sampling voltage according to the first voltage, and calculate the calibration accuracy.

[0042] In S4, in a possible embodiment, the first sampling voltage is calibrated according to the first voltage by linear calibration.

[0043] In a possible embodiment, after calibrating the first sampling voltage according to the first voltage, the method further includes: outputting a first verification voltage corresponding to the first calibration position; and acquiring a verification sampling voltage corresponding to the first verification voltage from a calibration board.

[0044] Calculating the calibration accuracy includes: comparing the first verification voltage and the verification sampling voltage, and calculating the calibration accuracy according to the comparison result.

[0045] S5: When the calibration accuracy satisfies and is greater than the first set threshold, return to execute S2 to S4 until the calibration accuracy satisfies and is less than or equal to the first set threshold.

[0046] S6: Outputting a second voltage corresponding to the second calibration position.

[0047] S7: Obtain a second sampling voltage corresponding to the second calibration position from the calibration board.

[0048] In S7, in a possible embodiment, after the test board outputs a voltage corresponding to the second calibration position, the calibration board will sample the second voltage, and then the calibration board will reply the sampled voltage value to the test board, so that the test board can obtain the second sampled voltage corresponding to the second calibration position from the calibration board.

[0049] In a possible embodiment, the test board outputs m second voltages, where m is a positive integer.

[0050] S8: Calibrate the second sampling voltage according to the second voltage, and calculate the calibration accuracy.

[0051] After calibrating the second sampling voltage according to the second voltage, the method further includes: outputting a second verification voltage corresponding to the second calibration position; and acquiring a verification sampling voltage corresponding to the second verification voltage from the calibration board.

[0052] Calculating the calibration accuracy includes: comparing the second verification voltage with the verification sampling voltage, and calculating the calibration accuracy according to the comparison result.

[0053] S9: When the calibration accuracy satisfies and is greater than the first set threshold, return to execute S6 to S8 until the calibration accuracy is less than or equal to the first set threshold.

[0054] In a possible embodiment, n calibration positions of a test board are all calibrated until the calibration accuracy is less than or equal to a first set threshold value, so as to complete the calibration of the test board.

[0055] In a possible embodiment, the first set threshold is 0.1%.

[0056] See the instruction manual Figure 2 In a specific embodiment, the signal connector connecting the test board and the calibration board is an HT3 connector. The HT3 connector enables the calibration board and the test board to be directly connected, and the test board can be easily replaced when calibrating the test board.

[0057] The voltage calibration method of the test board of the present invention realizes automatic data adjustment through data communication between the test board and the calibration board, thereby ensuring data accuracy. Furthermore, the test board and the calibration board are connected through a signal connector so that when calibrating a test board with multiple gears, the calibration gear can be automatically switched during the calibration process to complete the voltage calibration, which can avoid the trouble of constantly flying wires due to the need to test different voltages, reduce the time cost of the test board calibration, and thus shorten the cycle time of the entire SLT test (system level test). Automated voltage calibration of the test board through the calibration board can save the trouble of calibration through heavy instruments.

[0058] See the instruction manual Figure 3The embodiment of the present invention further provides a voltage calibration method for a calibration board. The voltage calibration method for the calibration board is applied to the calibration board, wherein the calibration board is connected to a calibration power supply. The method specifically comprises:

[0059] S10: receiving an instruction to perform voltage calibration, wherein the calibration board includes k gears, and k is a positive integer.

[0060] S20: According to the instruction, a voltage corresponding to the first gear of the calibration power supply is sampled to obtain a first reference voltage.

[0061] S30: Reading a first precise voltage corresponding to the first gear of the calibration power supply.

[0062] In S30, in a possible embodiment, the calibration board and the calibration power supply are also connected to a host computer. After the calibration power supply outputs a voltage corresponding to the first gear, the calibration board samples the voltage corresponding to the first gear, and the host computer reads the corresponding precise voltage through the calibration power supply. The host computer then sends the precise voltage to the calibration board so that the calibration board can read the first precise voltage of the calibration power supply corresponding to the first gear.

[0063] In a possible embodiment, the calibration board samples y voltages corresponding to the first gear of the calibration power supply, where y is a positive integer. After the calibration power supply outputs a voltage corresponding to the first gear, the calibration board performs sampling, and then the calibration board reads the precise voltage value of the currently sampled voltage to obtain the precise voltage; after the calibration power supply outputs another voltage corresponding to the first gear, the calibration board performs sampling, and then the calibration board reads the precise voltage value of the currently sampled voltage to obtain the precise voltage, until the calibration board samples all y voltages corresponding to the first gear of the calibration power supply and reads the precise voltages of the y voltages.

[0064] In a specific embodiment, the voltage corresponding to the first gear position sampled by the calibration board is the voltage terminal value of the first gear position.

[0065] S40: Calibrate the first reference voltage according to the first precise voltage, and calculate the calibration accuracy.

[0066] S50: When the calibration accuracy satisfies and is greater than the second set threshold, return to execute S20 to S40 until the calibration accuracy satisfies and is less than or equal to the second set threshold.

[0067] S60: sampling and calibrating the voltage of the power supply corresponding to the second gear to obtain a second reference voltage.

[0068] S70: Reading a second precise voltage corresponding to the second gear of the calibration power supply.

[0069] In S70, in a possible embodiment, the calibration board and the calibration power supply are also connected to a host computer. After the calibration power supply outputs a voltage corresponding to the second gear, the calibration board samples the voltage corresponding to the second gear, and the host computer reads the corresponding precise voltage through the calibration power supply. The host computer then sends the precise voltage to the calibration board so that the calibration board can read the second precise voltage of the calibration power supply corresponding to the second gear.

[0070] In a possible embodiment, the calibration board samples y voltages of the calibration power supply corresponding to the second gear, where y is a positive integer.

[0071] S80: Calibrate the second reference voltage according to the second precise voltage, and calculate the calibration accuracy.

[0072] S90: When the calibration accuracy satisfies and is greater than the second set threshold, return to execute S60 to S80 until the calibration accuracy satisfies and is less than or equal to the second set threshold.

[0073] In a possible embodiment, k calibration positions of a calibration plate are all calibrated until the calibration accuracy is less than or equal to a second set threshold value, so as to complete the calibration of the calibration plate.

[0074] In a possible embodiment, voltage calibration of the calibration board is a prerequisite for voltage calibration of the test board. Therefore, the voltage calibration accuracy of the calibration board needs to be more accurate than the voltage calibration accuracy of the test board.

[0075] In a specific embodiment, the second set threshold is 0.01%.

[0076] In a possible embodiment, the calibration board used in the embodiment of the present invention includes a signal connector, a channel switching module, a sampling module, an analog-to-digital conversion module and a control module. Among them, the signal connector is used to receive and transmit the voltage from the calibration power supply or the test board. The channel switching module is connected to the signal connector for switching the calibration gear. The sampling module is connected to the channel switching module for collecting an analog signal corresponding to the voltage from the calibration power supply. The analog-to-digital conversion module is connected to the sampling module for receiving an analog signal and converting the analog signal into a digital signal for output. The control module is connected to the analog-to-digital conversion module for receiving a digital signal and sending the digital signal to a host computer or a test board.

[0077] See the instruction manual Figure 4In a specific embodiment, the signal connector of the calibration board is an HT3 connector. The channel switching module includes a 3-level channel switch. The analog-to-digital conversion module uses ADC7768. The control module may include a microcontroller and a memory, which is responsible for the control of the current calibration process, data acquisition, storage, communication with other devices, etc. Furthermore, a calibration socket (external banana head socket) is also used on the calibration board, which can be connected to an external instrument to perform high-precision calibration on the calibration board itself, ensuring that the calibration board itself has a very high precision and improving the test quality of the entire automated calibration. When the calibration board provided in this embodiment is used, the 4-way DAC (digital-to-analog converter) voltage and VBAT (power supply voltage) output are input to the op amp through a 3-level channel switch. Test points and SMA (connectors in the RF circuit) are placed in the front section of the op amp, and should be connected to a multimeter and voltage external injection. After passing through the op amp, it is transmitted to the ADC7768 and the calibration socket.

[0078] In a specific embodiment, the calibration board can communicate with the host computer, and can realize functions such as automatic opening and closing of the calibration process, calibration data collection and analysis, and calibration parameter transmission and storage.

[0079] In order to more systematically describe the voltage calibration process of the test board, the present invention further combines Figure 5 The method embodiment shown describes the execution flow of the voltage calibration method of the above-mentioned test board.

[0080] S501: The test board and the calibration board are powered on by a 12V power supply.

[0081] S502: The microcontroller units (MCUs) of the test board and the calibration board are initialized and configured.

[0082] S503: The test board receives the instruction to execute voltage calibration sent by the host computer, and starts to calibrate the first calibration gear, wherein the test board includes 4 calibration gears, and the voltage corresponding to the first calibration gear is 0.1V-4.5V.

[0083] S504: The test board outputs a first voltage (0.1V) and sends output information to the calibration board.

[0084] S505: The test board obtains the corresponding first sampling voltage from the calibration board.

[0085] S506: The test board outputs another first voltage (4.5V), and sends output information to the calibration board.

[0086] S507: The test board obtains the corresponding first sampling voltage from the calibration board.

[0087] S508: The test board linearly calibrates 0.1V-4.5V according to the first voltage and the first sampled voltage, and saves the calibration information.

[0088] S509: The test board outputs a first verification voltage (2.5V) and sends output information to the calibration board.

[0089] S510: The test board obtains the verification sampling voltage from the calibration board and calculates the calibration accuracy.

[0090] S511: If the calibration accuracy meets the accuracy requirement of less than or equal to 0.1%, calibrate the next calibration gear; if the calibration accuracy is greater than 0.1%, return to execute S504 to S510 to recalibrate the first calibration gear.

[0091] In order to more systematically describe the voltage calibration process of the calibration board, the present invention further combines Figure 6 The method embodiment shown describes the execution process of the voltage calibration method of the above-mentioned calibration board.

[0092] S601: The calibration board is powered on by a 12V power supply.

[0093] S602: The micro control unit initializes configuration.

[0094] S603: Connect the calibration socket to the calibration power supply (6705B).

[0095] S604: The calibration board USB (Universal Serial Bus) is connected to the host computer to start calibrating the first gear. The calibration board includes 4 gears, and the corresponding voltages of the 4 gears are: 0.45V-4.5V, 0.045V-0.45V, 0,0045V-0.045V, 0.00045V-0.0045V, and the first gear is 0.45V-4.5V.

[0096] S605: The calibration board samples a voltage of the calibration power supply corresponding to the first gear to obtain a first reference voltage.

[0097] S606: The calibration board reads the first precise voltage (0.45V) of the corresponding calibration power supply from the host computer.

[0098] S607: The calibration board samples another voltage of the calibration power supply corresponding to the first gear to obtain a first reference voltage.

[0099] S608: The calibration board reads the first precise voltage (4.5V) of the corresponding calibration power supply from the host computer.

[0100] S609: The calibration board linearly calibrates 0.45V-4.5V according to the first reference voltage and the first precise voltage, and calculates the calibration accuracy.

[0101] S6010: If the calibration accuracy meets the accuracy requirement of less than or equal to 0.01%, calibrate the next gear; if the calibration accuracy is greater than 0.01%, return to execute S605 to S609 to recalibrate the first gear.

[0102] See the instruction manual Figure 7 This embodiment also provides a voltage calibration device for a test board, which is used to implement the embodiment of the voltage calibration method for the test board. The device includes:

[0103] The first receiving unit 701 is used to receive an instruction to perform voltage calibration, wherein the test board includes n calibration gears, and n is a positive integer.

[0104] The output unit 702 is used to output voltages corresponding to n calibration gears according to the instruction, including: outputting a first voltage corresponding to a first calibration gear, and outputting a second voltage corresponding to a second calibration gear.

[0105] The acquisition unit 703 is used to acquire a sampled voltage corresponding to a calibration position from the calibration board, including: acquiring a first sampled voltage corresponding to a first calibration position, and acquiring a second sampled voltage corresponding to a second calibration position.

[0106] The first calibration unit 704 is used to calibrate the sampled voltage according to the voltages corresponding to the n calibration gears, and calculate the calibration accuracy.

[0107] The first judgment unit 705 is used to judge whether the calibration accuracy of each calibration gear satisfies and is greater than a first set threshold value. When the calibration accuracy of the calibration gear satisfies and is greater than the first set threshold value, the execution output unit outputs the voltage corresponding to the calibration gear, the acquisition unit acquires the sampled voltage corresponding to the calibration gear, and the first calibration unit performs a calibration operation on the calibration gear until the calibration accuracy of the calibration unit satisfies and is less than or equal to the first set threshold value.

[0108] In a possible embodiment, the output unit 702 further includes: outputting a first verification voltage corresponding to the first calibration gear, and outputting a second verification voltage corresponding to the second calibration gear.

[0109] The acquisition unit 703 further includes: acquiring a verification sampling voltage corresponding to the first calibration gear, and acquiring a verification sampling voltage corresponding to the second calibration gear.

[0110] The first calibration unit 704 calculates the calibration accuracy, and is specifically used to: compare the verification voltage and the verification sampling voltage corresponding to the calibration gear, and calculate the calibration accuracy according to the comparison result.

[0111] See the instruction manual Figure 8This embodiment also provides a voltage calibration device for a calibration board, which is used to implement the embodiment of the voltage calibration method for the calibration board. The device includes:

[0112] The second receiving unit 801 is used to receive an instruction to perform voltage calibration, wherein the calibration board includes k gears, and k is a positive integer.

[0113] The sampling unit 802 is used to sample the voltages corresponding to the k gears of the calibration power supply according to the instruction to obtain a reference voltage.

[0114] The reading unit 803 is used to read the precise voltages corresponding to the k gears of the calibration power supply.

[0115] The second calibration unit 804 is used to calibrate the reference voltage according to the precise voltage and calculate the calibration accuracy.

[0116] The second judgment unit 805 is used to judge whether the calibration accuracy satisfies and is greater than a second set threshold value. When the calibration accuracy satisfies and is greater than the second set threshold value, the sampling unit samples the voltage of the calibration power supply corresponding to the gear position to obtain a reference voltage, the reading unit reads the precise voltage of the calibration power supply corresponding to the gear position, and the second calibration unit performs a calibration operation on the gear position until the calibration accuracy satisfies and is less than or equal to the second set threshold value.

[0117] All relevant contents of each step involved in the above method embodiment can be referred to the functional description of the corresponding functional module, and will not be repeated here.

[0118] In other embodiments of the present application, the present application discloses an electronic device, such as Fig. 9 As shown, the electronic device 900 may include: one or more processors 901; a memory 902; a display 903; one or more applications (not shown); and one or more computer programs 904. The above components may be connected via one or more communication buses 905. The one or more computer programs 904 are stored in the memory 902 and configured to be executed by the one or more processors 901. The one or more computer programs include instructions, which may be used to execute the following: Figure 1 , Figure 3 , Figure 5 , Figure 6 And each step in the corresponding embodiment.

[0119] Through the description of the above implementation methods, technicians in the relevant field can clearly understand that for the convenience and simplicity of description, only the division of the above functional modules is used as an example. In actual applications, the above functions can be assigned to different functional modules as needed, that is, the internal structure of the device is divided into different functional modules to complete all or part of the functions described above. The specific working process of the system, device and unit described above can refer to the corresponding process in the aforementioned method embodiment, and will not be repeated here.

[0120] Each functional unit in each embodiment of the present application can be integrated into a processing unit, or each unit can exist physically separately, or two or more units can be integrated into one unit. The above integrated unit can be implemented in the form of hardware or in the form of software functional units.

[0121] If the integrated unit is implemented in the form of a software functional unit and sold or used as an independent product, it can be stored in a computer-readable storage medium. Based on this understanding, the technical solution of the embodiment of the present application is essentially or the part that contributes to the prior art or all or part of the technical solution can be embodied in the form of a software product, and the computer software product is stored in a storage medium, including a number of instructions to enable a computer device (which can be a personal computer, a server, or a network device, etc.) or a processor to perform all or part of the steps of the method described in each embodiment of the present application. The aforementioned storage medium includes: various media that can store program codes, such as flash memory, mobile hard disk, read-only memory, random access memory, disk or optical disk.

[0122] The above is only a specific implementation of the embodiment of the present application, but the protection scope of the embodiment of the present application is not limited thereto, and any changes or replacements within the technical scope disclosed in the embodiment of the present application should be included in the protection scope of the embodiment of the present application. Therefore, the protection scope of the embodiment of the present application should be based on the protection scope of the claims.

Claims

1. A voltage calibration method for a test board, applied to the test board, characterized in that: The test board is connected to the calibration board via a signal connector, and the method comprises: S1: receiving an instruction to perform voltage calibration, wherein the test board includes n calibration positions, where n is a positive integer; S2: outputting a first voltage corresponding to a first calibration position according to the instruction; S3: Acquire a first sampled voltage corresponding to the first calibration position from the calibration board; S4: calibrating the first sampling voltage according to the first voltage, and calculating a calibration accuracy; S5: When the calibration accuracy satisfies and is greater than the first set threshold, return to execute S2 to S4 until the calibration accuracy satisfies and is less than or equal to the first set threshold; S6: outputting a second voltage corresponding to the second calibration position; S7: Acquire a second sample voltage corresponding to the second calibration position from the calibration board; S8: calibrating the second sampling voltage according to the second voltage, and calculating a calibration accuracy; S9: When the calibration accuracy satisfies and is greater than the first set threshold, return to execute S6 to S8 until the calibration accuracy is less than or equal to the first set threshold.

2. The method according to claim 1, characterized in that After calibrating the first sampling voltage according to the first voltage, the method further includes: Outputting a first verification voltage corresponding to the first calibration position; Acquire a verification sampling voltage corresponding to the first verification voltage from the calibration board; The calculation of calibration accuracy includes: comparing the first verification voltage with the verification sampling voltage, and calculating a calibration accuracy according to a comparison result; After calibrating the second sampling voltage according to the second voltage, the method further includes: Outputting a second verification voltage corresponding to the second calibration position; Acquire a verification sampling voltage corresponding to the second verification voltage from the calibration board; The calculation of calibration accuracy includes: The second verification voltage is compared with the verification sampling voltage, and the calibration accuracy is calculated according to the comparison result.

3. The method according to claim 1, characterized in that The signal connector is an HT3 connector.

4. A voltage calibration method for a calibration board, applied to the calibration board, characterized in that: The calibration board is connected to a calibration power supply, and the method comprises: S10: receiving an instruction to perform voltage calibration, wherein the calibration board includes k gears, and k is a positive integer; S20: According to the instruction, sampling the voltage of the calibration power source corresponding to the first gear to obtain a first reference voltage; S30: reading a first precise voltage corresponding to a first gear of the calibration power supply; S40: calibrating the first reference voltage according to the first precise voltage, and calculating a calibration accuracy; S50: When the calibration accuracy satisfies and is greater than the second set threshold, returning to execute S20 to S40 until the calibration accuracy satisfies and is less than or equal to the second set threshold; S60: Sampling the voltage of the calibration power source corresponding to the second gear to obtain a second reference voltage; S70: reading a second precise voltage of the calibration power source corresponding to the second gear position; S80: Calibrate the second reference voltage according to the second precise voltage, and calculate calibration accuracy; S90: When the calibration accuracy satisfies and is greater than the second set threshold, return to execute S60 to S80 until the calibration accuracy satisfies and is less than or equal to the second set threshold.

5. A voltage calibration device for a test board, applied to the test board, characterized in that: The test board is connected to the calibration board via a signal connector, and the device comprises: A first receiving unit, configured to receive an instruction for executing voltage calibration, wherein the test board includes n calibration positions, where n is a positive integer; an output unit, configured to output voltages corresponding to n calibration gears according to the instruction, including: outputting a first voltage corresponding to a first calibration gear, and outputting a second voltage corresponding to a second calibration gear; An acquisition unit, used for acquiring a sampled voltage corresponding to a calibration gear from the calibration board, comprising: acquiring a first sampled voltage corresponding to a first calibration gear, and acquiring a second sampled voltage corresponding to a second calibration gear; A first calibration unit, configured to calibrate the sampled voltage according to voltages corresponding to n calibration positions, and calculate a calibration accuracy; The first judgment unit is used to judge whether the calibration accuracy of each calibration gear satisfies and is greater than a first set threshold value. When the calibration accuracy of the calibration gear satisfies and is greater than the first set threshold value, the output unit is executed to output a voltage corresponding to the calibration gear, the acquisition unit acquires a sampled voltage corresponding to the calibration gear, and the first calibration unit performs a calibration operation on the calibration gear until the calibration accuracy of the calibration unit satisfies and is less than or equal to the first set threshold value.

6. The device according to claim 5, characterized in that The output unit further includes: outputting a first verification voltage corresponding to the first calibration gear, and outputting a second verification voltage corresponding to the second calibration gear; The acquisition unit further comprises: acquiring a verification sampling voltage corresponding to a first calibration gear position, and acquiring a verification sampling voltage corresponding to a second calibration gear position; The first calibration unit calculates the calibration accuracy, specifically for: comparing the verification voltage and the verification sampling voltage corresponding to the calibration gear, and calculating the calibration accuracy according to the comparison result.

7. The device according to claim 5, characterized in that The signal connector is an HT3 connector.

8. A voltage calibration device for a calibration board, applied to the calibration board, characterized in that: The calibration board is connected to a calibration power supply, and the device comprises: A second receiving unit, configured to receive an instruction to perform voltage calibration, wherein the calibration board includes k gears, and k is a positive integer; a sampling unit, configured to sample the voltages corresponding to the k gears of the calibration power supply according to the instruction to obtain a reference voltage; A reading unit, used to read the precise voltages of the calibration power source corresponding to k gears; A second calibration unit is used to calibrate the reference voltage according to the precise voltage and calculate the calibration accuracy; The second judgment unit is used to judge whether the calibration accuracy satisfies and is greater than a second set threshold value. When the calibration accuracy satisfies and is greater than the second set threshold value, the sampling unit samples the voltage corresponding to the gear position of the calibration power supply to obtain a reference voltage, the reading unit reads the precise voltage corresponding to the gear position of the calibration power supply, and the second calibration unit performs a calibration operation on the gear position until the calibration accuracy satisfies and is less than or equal to the second set threshold value.

9. A computer-readable storage medium having a computer program stored thereon, characterized in that: When the computer program is executed by a processor, the voltage calibration method according to any one of claims 1 to 3 or claim 4 is implemented.

10. An electronic device, characterized in that: include: Processor and memory; The memory is used to store computer programs; The processor is used to execute the computer program stored in the memory, so that the electronic device performs the voltage calibration method according to any one of claims 1 to 3 or claim 4.

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