Micro-current detection method, device, equipment and storage medium

Abstract

The application discloses a micro-current detection method, device, equipment and storage medium. The method comprises the following steps: controlling a detection equipment to detect a detection voltage of a precision resistor in a constant current circuit, and recording a constant current in the constant current circuit; controlling the detection equipment to be connected with a to-be-detected circuit, and obtaining a to-be-detected voltage of the precision resistor in the to-be-detected circuit; based on the to-be-detected voltage and the detection voltage, a voltage ratio of the to-be-detected voltage and the detection voltage is calculated; and based on the voltage ratio and the constant current, a to-be-detected current of the to-be-detected circuit is calculated. In the application, the proportion of the voltages generated by the constant current circuit and the detection circuit on the same precision resistor is determined, the amplification coefficient of the amplification circuit is offset, the size of the current is directly calculated in combination with the constant current, and then the current value of the to-be-detected circuit is quickly and accurately measured.

Description

Technical Field

[0001] This application relates to the field of circuit testing technology, and in particular to a microcurrent detection method, device, equipment, and storage medium. Background Technology

[0002] As electronic products become increasingly common, they will enter a low-current power supply mode after being turned off, so that end users can turn them on normally again.

[0003] Currently, the common method for detecting micro-currents is to use the micro-ammeter setting on a multimeter to measure the circuit. When using a multimeter, the current needs to be proportionally amplified to a level that the multimeter can capture before calculation. However, during the current amplification process, the amplification factor cannot be calculated to a completely precise value, resulting in the inability to measure an accurate current value. Summary of the Invention

[0004] The main objective of this application is to provide a microcurrent detection method, device, equipment, and storage medium, aiming to solve the technical problem in the prior art where the amplification factor cannot be calculated to an absolutely accurate value during the current amplification process, resulting in the inability to measure accurate current values.

[0005] To achieve the above objectives, this application provides a microcurrent detection method, the microcurrent detection method comprising:

[0006] The control and detection equipment detects the voltage of the precision resistor in the constant current circuit and records the constant current in the constant current circuit;

[0007] The detection device is controlled to connect to the circuit under test, and the voltage under test of the precision resistor in the circuit under test is obtained.

[0008] Based on the voltage to be measured and the detection voltage, the voltage ratio between the voltage to be measured and the detection voltage is calculated;

[0009] Based on the voltage ratio and the constant current, the current to be measured in the circuit under test is calculated.

[0010] Optionally, the step of controlling the detection device to detect the detection voltage of the precision resistor in the constant current circuit includes:

[0011] The control detection device amplifies the voltage of the precision resistor in the constant current circuit and records the amplified data when the detection device is connected to the constant current circuit;

[0012] Based on the amplified data, the detection voltage of the precision resistor in the constant current circuit is detected.

[0013] Optionally, the step of controlling the detection device to connect to the circuit under test and obtaining the voltage to be measured of the precision resistor in the circuit under test includes:

[0014] The detection device is controlled to connect to the circuit under test, and the detection device is adjusted based on the amplified data to obtain the amplification circuit in the detection device;

[0015] Based on the amplification circuit, the voltage across the precision resistor is amplified to obtain the voltage under test of the precision resistor in the circuit under test.

[0016] Optionally, the step of amplifying the voltage across the precision resistor based on the amplification circuit to obtain the voltage to be measured of the precision resistor in the circuit under test includes:

[0017] Based on the aforementioned amplifier circuit, the voltage across the precision resistor is amplified;

[0018] The voltage across the precision resistor is amplified and then regulated to obtain the voltage under test of the precision resistor in the circuit under test.

[0019] Optionally, the step of controlling the detection device to connect to the circuit under test and adjusting the detection device based on the amplified data to obtain the amplification circuit in the detection device includes:

[0020] The detection device is controlled to connect to the circuit under test, and fault detection is performed on the circuit under test.

[0021] If the circuit under test is fault-free, then acquire the amplified data when the detection device is connected to the constant current circuit;

[0022] Based on the amplified data, the detection device is adjusted, and the safety of the adjusted detection device is determined.

[0023] If the adjusted detection device is safe, then the amplification circuit in the detection device is obtained.

[0024] Optionally, the microcurrent detection method further includes:

[0025] The current to be measured is compared with the preset shutdown current to determine the result;

[0026] If the current under test does not meet the shutdown current, then a correction suggestion for the circuit under test is fed back.

[0027] Optionally, the step of feeding back a correction suggestion for the circuit under test if the measured current does not meet the shutdown current includes:

[0028] If the current under test does not meet the shutdown current, then current diagnosis is performed on the circuit under test to obtain the diagnosis result.

[0029] Based on the diagnostic results, a correction suggestion is obtained for the circuit under test, and the correction suggestion is fed back to a preset display.

[0030] This application also provides a microcurrent detection device, the microcurrent detection device comprising:

[0031] The detection module is used to control the detection equipment to detect the detection voltage of the precision resistor in the constant current circuit and record the constant current in the constant current circuit.

[0032] The control module is used to control the detection device to connect to the circuit under test and obtain the voltage under test of the precision resistor in the circuit under test;

[0033] The first calculation module is used to calculate the voltage ratio between the voltage to be measured and the detection voltage based on the voltage to be measured and the detection voltage.

[0034] The second calculation module is used to calculate the current to be measured in the circuit under test based on the voltage ratio and the constant current.

[0035] This application also provides a microcurrent detection device, which is a physical node device. The microcurrent detection device includes a memory, a processor, and a program for the microcurrent detection method stored in the memory and executable on the processor. When the program for the microcurrent detection method is executed by the processor, it can implement the steps of the microcurrent detection method as described above.

[0036] This application also provides a storage medium storing a program for implementing the microcurrent detection method described above. When the program for the microcurrent detection method is executed by a processor, it implements the steps of the microcurrent detection method as described above.

[0037] This application provides a micro-current detection method, apparatus, device, and storage medium. Compared with the prior art where the amplification factor cannot be calculated to an absolutely precise value during the current amplification process, resulting in the inability to measure an accurate current value, this application controls the detection device to detect the detection voltage of a precision resistor in a constant current circuit and records the constant current in the constant current circuit; controls the detection device to connect to the circuit under test to obtain the voltage to be measured of the precision resistor in the circuit under test; calculates the voltage ratio between the voltage to be measured and the detection voltage based on the voltage to be measured and the constant current; and calculates the current to be measured in the circuit under test based on the voltage ratio and the constant current. In this application, the control detection equipment detects the detection voltage of the precision resistor in the constant current circuit and records the constant current in the constant current circuit. When the control detection equipment is connected to the circuit under test, the voltage to be measured of the precision resistor in the circuit under test is detected. By comparing the ratio of the voltage to be measured to the detection voltage, the amplification factor of the amplifier circuit is canceled out. Combined with the constant current, the magnitude of the current to be measured is directly calculated. That is, in this application, by determining the ratio of the voltage generated by the constant current circuit and the detection circuit on the same precision resistor, the amplification factor of the amplifier circuit is canceled out. Combined with the constant current, the magnitude of the current is directly calculated, thereby quickly and accurately measuring the current value of the circuit under test. Attached Figure Description

[0038] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application.

[0039] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, for those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0040] Figure 1 This is a flowchart illustrating the first embodiment of the microcurrent detection method of this application;

[0041] Figure 2 This is a schematic diagram of the composition of the testing equipment in this application;

[0042] Figure 3 This is a schematic diagram of the device structure of the hardware operating environment involved in the embodiments of this application;

[0043] Figure 4 This is a flowchart illustrating the second embodiment of the microcurrent detection method of this application.

[0044] The purpose, features, and advantages of this application will be further explained in conjunction with the embodiments and with reference to the accompanying drawings. Detailed Implementation

[0045] It should be understood that the specific embodiments described herein are merely illustrative of this application and are not intended to limit this application.

[0046] This application provides a microcurrent detection method. In the first embodiment of the microcurrent detection method of this application, refer to... Figure 1 The microcurrent detection method includes:

[0047] Step S10: Control the detection equipment to detect the detection voltage of the precision resistor in the constant current circuit, and record the constant current in the constant current circuit;

[0048] Step S20: Control the detection device to connect to the circuit under test, and obtain the voltage under test of the precision resistor in the circuit under test;

[0049] Step S30: Based on the voltage to be measured and the detection voltage, calculate the voltage ratio between the voltage to be measured and the detection voltage;

[0050] Step S40: Calculate the current to be measured in the circuit under test based on the voltage ratio and the constant current.

[0051] The purpose of this embodiment is to cancel out the amplification factor that cannot be accurately determined when detecting micro-current circuits, so as to accurately measure the current value of micro-current circuits.

[0052] In this embodiment, it should be noted that the microcurrent detection method can be applied to a microcurrent detection device, which is subordinate to a microcurrent detection equipment, which is a microcurrent detection system.

[0053] Reference Figure 2 It should be noted that the testing equipment may include an amplifier circuit, a sampling circuit, a logic control module, a display, a constant current source circuit, a precision resistor, and a resistor to ground. The constant current circuit and the resistor to ground can be external circuits and resistors.

[0054] The amplifier circuit is used to amplify the voltage generated on the precision resistor, thus obtaining the amplified detection voltage and the voltage to be measured.

[0055] The sampling circuit is used to stabilize the voltage across the precision resistor, ensuring that the detection voltage or the voltage to be measured obtained by the logic control module is stable, thus avoiding voltage fluctuations that could lead to inaccurate detection of the current to be measured. It is also used to convert the electrical signal detected by the detection equipment into a digital signal that the logic control module can recognize.

[0056] The logic control module is used to control the detection equipment to change the connected circuit; it is also used to calculate the current to be measured in the detection circuit.

[0057] It should be noted that the sampling circuit can also be set in the logic control module, and the voltage across the precision resistor can be regulated by the logic control module.

[0058] The logic control module calculates the current to be measured and then feeds it back to the user through the display so that the user can easily test the micro-current circuit, that is, test the circuit under test.

[0059] Among them, the resistance to ground can be a kiloohm resistor, specifically, the resistance to ground should be at least five kiloohms; the resistance to ground is used to protect the constant current circuit, prevent leakage of the constant current circuit, and ensure that the precision resistor operates normally in the circuit.

[0060] In this embodiment, refer to Figure 2 , Figure 2 This is a schematic diagram of the composition of the testing equipment in this application.

[0061] The specific steps are as follows:

[0062] Step S10: Control the detection equipment to detect the detection voltage of the precision resistor in the constant current circuit, and record the constant current in the constant current circuit;

[0063] In this circuit, the magnitude of the current in the constant current circuit should correspond to the magnitude of the current in the circuit under test. That is, if the circuit under test is a microcurrent circuit and the current in the circuit under test is at the microampere level, the magnitude of the current in the constant current circuit should also be at the microampere level.

[0064] In this embodiment, a precision resistor is connected in a constant current circuit. The detection device is controlled to connect to the constant current circuit and detect the detection voltage across the precision resistor in the constant current circuit. Since the current in the constant current circuit is constant, the constant current in the constant current circuit can be directly obtained and recorded.

[0065] It should be noted that when detecting the voltage across the precision resistor in a constant current circuit, the voltage needs to be amplified. Since the amplification factor cannot be accurately obtained when the voltage is amplified, it is necessary to obtain a stable voltage across the precision resistor, i.e., the detection voltage, to avoid fluctuations in the voltage causing fluctuations in the final measured current, which would make the final measured current inaccurate.

[0066] Specifically, the step of the control and detection device detecting the detection voltage of the precision resistor in the constant current circuit includes:

[0067] Step S11: Control the detection device to amplify the voltage of the precision resistor in the constant current circuit, and record the amplified data when the detection device is connected to the constant current circuit;

[0068] Step S12: Based on the amplified data, detect the detection voltage of the precision resistor in the constant current circuit.

[0069] The amplification data can be the amplification factor when the detection equipment detects the voltage of a precision resistor in a constant current circuit. It should be noted that the amplification factor is in proportional form to avoid errors in the amplification factor due to rounding when calculated as a decimal.

[0070] In this embodiment, since the current in the constant current circuit is of the same magnitude as the current in the circuit under test, and the circuit under test is a micro-current circuit, the detected electrical parameters need to be amplified by an amplifier circuit in order to obtain the electrical parameters in the micro-current circuit.

[0071] In this embodiment, when the control detection device amplifies the voltage of the precision circuit in the constant current circuit, it records the amplification data of the precision current in the constant current circuit, that is, the amplification ratio. After the amplified voltage is detected by the detection device, the current to be measured is calculated by determining the amplified detection voltage. Since the amplification factor cannot be calculated to an absolutely accurate value, if the specific voltage of the precision resistor in the constant current circuit is calculated by using the amplified detection voltage and the amplification data, the specific voltage may be calculated with errors. The current to be measured calculated by using the specific voltage with errors will reduce the accuracy.

[0072] The voltage to be measured can be a fraction, a decimal, or an integer; there are no specific limitations.

[0073] For example, during the amplification process of the circuit across the precision resistor, the detection device can only obtain the voltage across the precision resistor when the amplification ratio is 3:5. Since the calculated amplification ratio cannot yield a precise value, if the actual voltage across the precision resistor is 0.04 volts, the detected voltage will be between one-third and 0.2 volts. If the detected voltage is recorded as 0.0667 volts, an error will occur.

[0074] Step S20: Control the detection device to connect to the circuit under test, and obtain the voltage under test of the precision resistor in the circuit under test;

[0075] Among them, precision resistors are resistors with high precision, low temperature drift and high reliability. By using precision resistors, the detection error can be reduced, thereby improving the accuracy of the final measured current.

[0076] In this embodiment, after a stable voltage is detected in the constant current circuit of the precision resistor, the detection device is then controlled to connect the circuit under test. That is, the precision resistor is connected to the circuit under test. After the circuit under test is powered on, the current to be measured passes through the precision resistor. The detection device amplifies the voltage across the precision resistor and detects the voltage to be measured.

[0077] It should be noted that when amplifying the precision resistor connected in the circuit under test, the amplified data should be the same as the amplified data when amplifying the precision resistor in the constant current detection circuit. In subsequent calculations of the current under test, the amplified data can be eliminated to avoid the influence of the amplified data on the detection of the current under test.

[0078] Specifically, the step of controlling the detection device to connect to the circuit under test and obtaining the voltage under test of the precision resistor in the circuit under test includes:

[0079] Step S21: Control the detection device to connect to the circuit under test, and adjust the detection device based on the amplified data to obtain the amplification circuit in the detection device;

[0080] Step S22: Based on the amplification circuit, the voltage across the precision resistor is amplified to obtain the voltage under test of the precision resistor in the circuit under test.

[0081] The amplification data can also be pre-set by the user. That is, the amplification data is preset by the user. It should be noted that if the amplification data is preset, the voltage of the precision resistor can be detected by the set amplification data.

[0082] For example, if the voltage that the testing device can recognize is 0.01 volts, and the actual voltage of the precision resistor in the constant current circuit or the circuit under test is 0.004 volts, and the user sets the amplification data to 2, then the amplified voltage obtained after amplifying the actual voltage through the amplification circuit is 0.008 volts. Since the voltage of 0.008 volts cannot be recognized by the testing device, the amplification data cannot be set to 2. If the voltage across the precision resistor can be detected by the testing device, then the minimum amplification data set by the user is 2.5.

[0083] In this embodiment, based on the amplified voltage data of the constant current circuit when the detection device is connected to the constant current circuit, the detection device is adjusted when the circuit under test is connected to determine the amplification circuit in the detection device. The voltage of the precision resistor in the circuit under test is amplified by the amplification circuit to obtain the voltage to be measured of the precision resistor in the circuit under test. This ensures that the amplified voltage data of the constant current circuit and the circuit under test on the precision resistor are exactly the same. When calculating the current to be measured by the detected voltage and the voltage to be measured, the error caused by the amplified data is eliminated.

[0084] It should be noted that, in this embodiment, after the detection device detects the voltage of the precision resistor in the constant current circuit, the amplification circuit in the detection device can be calibrated. After the detection device is connected to the circuit under test, the adjustment of the amplification data can be avoided, and the amplification data of the two circuits can be guaranteed to be exactly the same.

[0085] In this embodiment, after detecting a stable voltage of the precision resistor in the constant current circuit and obtaining a constant current in the constant current circuit, the detection device is controlled to connect to the circuit under test, and the amplification circuit in the detection device is adjusted so that the amplified data of the precision resistor in the circuit under test is the same as the amplified data of the voltage of the precision resistor in the constant current circuit, thus obtaining the amplified voltage of the precision resistor in the circuit under test.

[0086] Specifically, the step of amplifying the voltage across the precision resistor based on the amplification circuit to obtain the voltage to be measured of the precision resistor in the circuit under test includes:

[0087] Step A10: Based on the amplifier circuit, amplify the voltage across the precision resistor;

[0088] Step A20: Amplify the voltage across the precision resistor and then perform voltage stabilization to obtain the voltage under test of the precision resistor in the circuit under test.

[0089] It should be noted that when performing voltage detection on a precision resistor, in order to avoid fluctuations in the voltage detection of the precision resistor by the amplified circuit, the precision resistor needs to be regulated to avoid voltage fluctuations and ensure accurate determination of the voltage value of the precision resistor in the constant current circuit or the circuit under test.

[0090] In this embodiment, the precision resistor is amplified and detected by an amplification circuit with the same amplification data. When detecting the voltage of the precision resistor, the voltage is stabilized to avoid voltage fluctuations during the amplification process, which could cause errors in the readings of the detection device. Finally, the measured voltage of the precision resistor in the circuit under test is the same as that in the constant current circuit.

[0091] In this embodiment, after detecting a stable voltage of the precision resistor in the constant current circuit and obtaining the constant current in the constant current circuit, the detection device is controlled to connect the circuit under test to obtain the same amplified data as when detecting the precision resistor in the constant current circuit. During the detection, the precision resistor is regulated to obtain a stable and accurate voltage under test, which can eliminate the amplified data between the detected voltage and the voltage under test, thereby avoiding errors in the current under test due to voltage amplification during the detection process.

[0092] Step S30: Based on the voltage to be measured and the detection voltage, calculate the voltage ratio between the voltage to be measured and the detection voltage;

[0093] In this embodiment, the resistance value is calculated using the formula: R = U / I, where R is the resistance of the precision resistor, U is the voltage across the precision resistor, and I is the current flowing through the precision resistor. That is, in a constant current circuit, the resistance value is calculated using the formula: R = U1 / I1, where U1 is the detected voltage and I1 is the constant current. In the circuit under test, the resistance value is calculated using the formula: R = U2 / I2, where U2 is the voltage to be measured and I1 is the current to be measured. Since the precision resistor detected in the constant current circuit and the precision resistor detected in the circuit under test are the same resistor, U1 / I1 = U2 / I2 = R.

[0094] It should be noted that in U1 / I1=U2 / I2, U1 is the detection voltage, which can be detected by the detection device; I1 is the constant current, which can be directly obtained since the circuit in the constant current circuit is known and stable; and U2 is the voltage to be measured, which can also be detected by the detection device. That is, by using the detection voltage, constant current, and voltage to be measured, the current to be measured can be directly calculated according to the formula U1 / I1=U2 / I2.

[0095] In this embodiment, U1 / I1=U2 / I2 can also be written as I2=(U2 / U1)I1. In I2=(U2 / U1)I1, it can be seen that the voltage ratio between the voltage to be measured and the detection voltage will eliminate the amplified data, thus avoiding the inaccuracy of the final measured current due to the amplified data not being able to obtain a precise value.

[0096] Step S40: Calculate the current to be measured in the circuit under test based on the voltage ratio and the constant current.

[0097] Where I2 can be a fraction or a decimal obtained according to the user's needs. When the calculated I2 is an integer, it can also be an integer.

[0098] For example, if U2 / U1 is calculated to be 3 / 4 and I1 is 0.05 microamps, then I2 is 0.037 microamps. If U2 / U1 is calculated to be 2 / 3 and I1 is 0.05 microamps, then I2 is 0.1 / 3 microamps. If the user requests to keep 4 decimal places, then I2 is 0.0333 microamps. If U2 / U1 is calculated to be 4 / 2 and I1 is 0.5 microamps, then I2 is 1 microamp.

[0099] In this embodiment, since U2 / U1 in I2=(U2 / U1)I1 is the ratio between the actual voltage of the precision resistor in the circuit under test and the actual voltage of the precision resistor in the detection circuit, and the amplification factor that cannot be accurately determined has been eliminated by the cancellation term in the ratio, it will not affect the accuracy of the measured current. That is, in this embodiment, the current actually flowing through the precision resistor in the circuit under test will not be affected by the amplification circuit, and the measured current finally calculated is an accurate current value within the user-set range.

[0100] In this embodiment, the detection voltage of the precision resistor in the constant current circuit is first detected, and the amplified data of the detection device when detecting the precision resistor is determined. Then, the voltage of the precision resistor in the circuit under test is detected with the same amplified data. By calculating the ratio between the voltage under test and the detection voltage, the amplified data of the amplification circuit in the detection device is eliminated. That is, the influence of the amplification circuit on the current under test is eliminated, and the inaccuracy of the amplified data is avoided from affecting the accuracy of the current under test.

[0101] This application provides a micro-current detection method, apparatus, device, and storage medium. Compared with the prior art where the amplification factor cannot be calculated to an absolutely precise value during the current amplification process, resulting in the inability to measure an accurate current value, this application controls the detection device to detect the detection voltage of a precision resistor in a constant current circuit and records the constant current in the constant current circuit; controls the detection device to connect to the circuit under test to obtain the voltage to be measured of the precision resistor in the circuit under test; calculates the voltage ratio between the voltage to be measured and the detection voltage based on the voltage to be measured and the constant current; and calculates the current to be measured in the circuit under test based on the voltage ratio and the constant current. In this application, the control detection equipment detects the detection voltage of the precision resistor in the constant current circuit and records the constant current in the constant current circuit. When the control detection equipment is connected to the circuit under test, the voltage to be measured of the precision resistor in the circuit under test is detected. By comparing the ratio of the voltage to be measured to the detection voltage, the amplification factor of the amplifier circuit is canceled out. Combined with the constant current, the magnitude of the current to be measured is directly calculated. That is, in this application, by determining the ratio of the voltage generated by the constant current circuit and the detection circuit on the same precision resistor, the amplification factor of the amplifier circuit is canceled out. Combined with the constant current, the magnitude of the current is directly calculated, thereby quickly and accurately measuring the current value of the circuit under test.

[0102] Furthermore, based on the above embodiments of this application, another embodiment of this application is provided, in which reference is made to... Figure 4 The step of controlling the detection device to connect to the circuit under test, and adjusting the detection device based on the amplified data to obtain the amplification circuit in the detection device includes:

[0103] Step S01: Control the detection device to connect to the circuit under test and perform fault detection on the circuit under test;

[0104] Step S02: If the circuit under test is fault-free, then acquire the amplified data when the detection device is connected to the constant current circuit;

[0105] Step S03: Based on the amplified data, adjust the detection device and determine the safety of the adjusted detection device;

[0106] Step S04: If the adjusted detection device is safe, then the amplification circuit in the detection device is obtained.

[0107] It should be noted that the circuit under test or the constant current circuit may have circuit faults. When testing the constant current circuit, it is also necessary to perform circuit fault detection to avoid connecting the precision resistor in the faulty circuit, which could damage the resistor and consequently damage the testing equipment.

[0108] The faulty circuit can be a short circuit, open circuit, poor contact, overload, etc., and there are no specific restrictions.

[0109] In this embodiment, if the detection device detects a circuit fault in the circuit under test, it is not necessary to continue detecting the current under test in the circuit under test. When a circuit fault is detected in the circuit under test, the cause of the circuit fault can be further determined and fed back to the user through the display so that the user can repair the circuit under test, thereby improving work efficiency.

[0110] It should be noted that if the testing equipment detects a circuit fault in the constant current circuit, the constant current circuit needs to be replaced and the test repeated. This is to avoid the testing equipment having low accuracy and reliability in detecting the voltage of the precision resistor in the constant current circuit, which in turn affects the reliability and accuracy of the measured current.

[0111] In this embodiment, if there is no circuit fault in the circuit under test, a precision resistor is connected to the circuit under test, and the amplification data of the detection device is adjusted. The safety of the adjusted detection device is then determined. If the adjusted detection device is safe, the amplification circuit in the detection device is obtained. This avoids directly connecting a potentially dangerous detection device to the circuit under test, which could cause a circuit fault in the circuit under test. It also avoids using a potentially dangerous detection device to detect the current under test in the circuit under test, which could cause errors in the current under test and affect the accuracy of the current under test.

[0112] Furthermore, based on the above embodiments of this application, another embodiment of this application is provided, in which the microcurrent detection method further includes:

[0113] Step B10: Compare the current to be measured with the preset shutdown current to determine the result;

[0114] Step B20: If the current under test does not meet the shutdown current, then feedback is given on the correction suggestions for the circuit under test.

[0115] It should be noted that the circuit under test can be the motherboard circuit of an electronic product in the powered-off state. The electronic product can be a laptop, mobile phone, smart home device, etc., and there are no specific limitations.

[0116] Among them, the shutdown current is the minimum current that the motherboard can maintain in standby mode when the power is off, in order to ensure that...

[0117] In this embodiment, the logic control module also presets a shutdown current. After the detection device accurately detects the current to be measured, the logic control module compares the current to be measured with the shutdown current. If the current to be measured is less than the shutdown current, the power supply of the battery to the motherboard circuit is insufficient to keep the motherboard in standby mode. When the user turns on the electronic product, it may fail to turn on normally or fail to turn on at all.

[0118] It should be noted that the shutdown current has a floating range. If the measured current is within the floating range of the shutdown current, it is determined that the measured current meets the shutdown current requirement. If the measured current is greater than the shutdown current and exceeds the floating range, it is determined that the power supply of the battery to the motherboard circuit is sufficient to keep the motherboard in standby mode. However, this will consume too much battery power, resulting in a decrease in the battery life of electronic products in the shutdown state. When the measured current is equal to the shutdown current or within the floating range of the shutdown current, the battery power supply to the motherboard is sufficient to maintain the motherboard's standby state, while also ensuring the battery life of electronic products.

[0119] In this embodiment, if the current under test is detected to be insufficient to meet the shutdown current, a correction suggestion for the circuit under test is determined and fed back to the user through the display so that the user can repair the circuit under test according to the correction suggestion, thereby improving the service life of the circuit under test.

[0120] Specifically, the step of providing correction suggestions for the circuit under test if the measured current does not meet the shutdown current includes:

[0121] Step B21: If the current to be tested does not meet the shutdown current, then perform current diagnosis on the circuit under test to obtain the diagnosis result.

[0122] Step B22: Based on the diagnostic results, obtain correction suggestions for the circuit under test, and feed back the correction suggestions to a preset display.

[0123] In this embodiment, if it is detected that the measured current does not meet the shutdown current, that is, the measured current is not equal to the shutdown current and the measured current is not within the fluctuation range of the shutdown current, then current diagnosis is performed on the circuit under test to determine the cause of the measured current not meeting the shutdown current in the circuit under test, obtain the diagnostic result, and determine the correction suggestion for the circuit under test based on the diagnostic result, and feed the correction suggestion back to the display so as to remind the user to repair the circuit under test according to the correction suggestion.

[0124] In this embodiment, the test current is determined based on the shutdown current to determine whether it meets the requirements. If the test current does not meet the shutdown current requirements, a correction suggestion for the circuit under test is determined and fed back to the user through the display. This allows the user to repair the circuit under test in a timely manner based on the correction suggestion, thereby improving the service life of the circuit under test.

[0125] Reference Figure 3 , Figure 3 This is a schematic diagram of the device structure of the hardware operating environment involved in the embodiments of this application.

[0126] like Figure 3 As shown, the microcurrent detection device may include: a processor 1001, such as a CPU, a memory 1005, and a communication bus 1002. The communication bus 1002 is used to establish communication between the processor 1001 and the memory 1005. The memory 1005 may be a high-speed RAM or a stable, non-volatile memory, such as a disk drive. Optionally, the memory 1005 may also be a storage device independent of the aforementioned processor 1001.

[0127] Optionally, the microcurrent detection device may also include a rectangular user interface, a network interface, a camera, RF (Radio Frequency) circuitry, a sensor, audio circuitry, a WiFi module, etc. The rectangular user interface may include a display screen and an input submodule such as a keyboard. Optionally, the rectangular user interface may also include a standard wired interface or a wireless interface. The network interface may optionally include a standard wired interface or a wireless interface (such as a Wi-Fi interface).

[0128] Those skilled in the art will understand that Figure 3 The microcurrent detection device structure shown does not constitute a limitation on the microcurrent detection device, and may include more or fewer components than shown, or combine certain components, or have different component arrangements.

[0129] like Figure 3As shown, the memory 1005, serving as a storage medium, may include an operating system, a network communication module, and a microcurrent detection program. The operating system is a program that manages and controls the hardware and software resources of the microcurrent detection device, supporting the operation of the microcurrent detection program and other software and / or programs. The network communication module is used to enable communication between the various components within the memory 1005, as well as communication with the microcurrent detection method, apparatus, device, and other hardware and software in the storage medium.

[0130] exist Figure 3 In the microcurrent detection device shown, the processor 1001 is used to execute the microcurrent detection program stored in the memory 1005 to implement the steps of the microcurrent detection method described in any of the above claims.

[0131] The specific implementation of the microcurrent detection device in this application is basically the same as the embodiments of the microcurrent detection method described above, and will not be repeated here.

[0132] This application also provides a microcurrent detection device, the microcurrent detection device comprising:

[0133] The detection module is used to control the detection equipment to detect the detection voltage of the precision resistor in the constant current circuit and record the constant current in the constant current circuit.

[0134] The control module is used to control the detection device to connect to the circuit under test and obtain the voltage under test of the precision resistor in the circuit under test;

[0135] The first calculation module is used to calculate the voltage ratio between the voltage to be measured and the detection voltage based on the voltage to be measured and the detection voltage.

[0136] The second calculation module is used to calculate the current to be measured in the circuit under test based on the voltage ratio and the constant current.

[0137] Optionally, the detection module includes:

[0138] The control submodule is used to control the detection device to amplify the voltage of the precision resistor in the constant current circuit, and to record the amplified data when the detection device is connected to the constant current circuit;

[0139] The detection submodule is used to detect the detection voltage of the precision resistor in the constant current circuit based on the amplified data.

[0140] Optionally, the control module includes:

[0141] An adjustment module is used to control the detection device to connect to the circuit under test, and to adjust the detection device based on the amplified data to obtain the amplified circuit in the detection device;

[0142] An amplification module is used to amplify the voltage across the precision resistor based on the amplification circuit, so as to obtain the voltage under test of the precision resistor in the circuit under test.

[0143] Optionally, the amplification module includes:

[0144] An amplification submodule is used to amplify the voltage across the precision resistor based on the amplification circuit.

[0145] A voltage regulator module is used to amplify and regulate the voltage across the precision resistor to obtain the voltage under test of the precision resistor in the circuit under test.

[0146] Optionally, the adjustment module includes:

[0147] The detection unit is used to control the detection device to connect to the circuit under test and to perform fault detection on the circuit under test.

[0148] The first acquisition submodule is used to acquire the amplified data when the detection device is connected to the constant current circuit if the circuit under test is fault-free.

[0149] An adjustment submodule is used to adjust the detection device based on the amplified data and determine the safety of the adjusted detection device.

[0150] The second acquisition submodule is used to obtain the amplification circuit in the detection device if the adjusted detection device is safe.

[0151] Optionally, the microcurrent detection device includes:

[0152] The comparison module is used to compare the current to be measured with a preset shutdown current for judgment.

[0153] The feedback module is used to provide correction suggestions for the circuit under test if the current under test does not meet the shutdown current.

[0154] Optionally, the simulation module includes:

[0155] The diagnostic module is used to perform current diagnosis on the circuit under test and obtain a diagnostic result if the current under test does not meet the shutdown current.

[0156] The feedback submodule is used to obtain correction suggestions for the circuit under test based on the diagnostic results, and to feed back the correction suggestions to a preset display.

[0157] The specific implementation of the microcurrent detection device in this application is basically the same as the embodiments of the microcurrent detection method described above, and will not be repeated here.

[0158] This application provides a storage medium that stores one or more programs, which can be executed by one or more processors to implement the steps of the microcurrent detection method described in any of the above claims.

[0159] The specific implementation of the storage medium in this application is basically the same as the embodiments of the microcurrent detection method described above, and will not be repeated here.

[0160] It should be noted that, in this document, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Unless otherwise specified, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes that element.

[0161] The sequence numbers of the above embodiments of the present invention are for descriptive purposes only and do not represent the superiority or inferiority of the embodiments.

[0162] Through the above description of the embodiments, those skilled in the art can clearly understand that the methods of the above embodiments can be implemented by means of software plus necessary general-purpose hardware platforms. Of course, they can also be implemented by hardware, but in many cases the former is a better implementation method. Based on this understanding, the technical solution of the present invention, or the part that contributes to the prior art, can be embodied in the form of a software product. This computer software product is stored in a storage medium (such as ROM / RAM, magnetic disk, optical disk) and includes several instructions to cause a terminal device (which may be a mobile phone, computer, server, air conditioner, or network device, etc.) to execute the methods described in the various embodiments of the present invention.

[0163] The above are merely preferred embodiments of the present invention and do not limit the scope of the patent. Any equivalent structural or procedural transformations made based on the description and drawings of the present invention, or direct or indirect applications in other related technical fields, are similarly included within the scope of patent protection of the present invention.

Claims

1. A microcurrent detection method, characterized in that, The microcurrent detection method includes: The control and detection equipment detects the voltage of the precision resistor in the constant current circuit and records the constant current in the constant current circuit; The detection device is controlled to connect to the circuit under test, and the voltage under test of the precision resistor in the circuit under test is obtained. Based on the voltage to be measured and the detection voltage, the voltage ratio between the voltage to be measured and the detection voltage is calculated; Based on the voltage ratio and the constant current, the current to be measured in the circuit under test is calculated. The step of controlling the detection device to detect the detection voltage of the precision resistor in the constant current circuit includes: The control detection device amplifies the voltage of the precision resistor in the constant current circuit and records the amplified data when the detection device is connected to the constant current circuit; Based on the amplified data, the detection voltage of the precision resistor in the constant current circuit is detected; The step of controlling the detection device to connect to the circuit under test and obtaining the voltage under test of the precision resistor in the circuit under test includes: The detection device is controlled to connect to the circuit under test, and the detection device is adjusted based on the amplified data to obtain the amplification circuit in the detection device; Based on the amplification circuit, the voltage across the precision resistor is amplified to obtain the voltage under test of the precision resistor in the circuit under test. The step of controlling the detection device to connect to the circuit under test, and adjusting the detection device based on the amplified data to obtain the amplification circuit in the detection device includes: The detection device is controlled to connect to the circuit under test, and fault detection is performed on the circuit under test. If the circuit under test is fault-free, then acquire the amplified data when the detection device is connected to the constant current circuit; Based on the amplified data, the detection device is adjusted, and the safety of the adjusted detection device is determined. If the adjusted detection device is safe, then the amplification circuit in the detection device is obtained.

2. The microcurrent detection method as described in claim 1, characterized in that, The step of amplifying the voltage across the precision resistor based on the amplification circuit to obtain the voltage under test of the precision resistor in the circuit under test includes: Based on the aforementioned amplifier circuit, the voltage across the precision resistor is amplified; The voltage across the precision resistor is amplified and then regulated to obtain the voltage under test of the precision resistor in the circuit under test.

3. The microcurrent detection method as described in claim 1, characterized in that, The microcurrent detection method further includes: The current to be measured is compared with the preset shutdown current to determine the result; If the current under test does not meet the shutdown current, then a correction suggestion for the circuit under test is fed back.

4. The microcurrent detection method as described in claim 3, characterized in that, The step of providing correction suggestions for the circuit under test if the measured current does not meet the shutdown current includes: If the current under test does not meet the shutdown current, then current diagnosis is performed on the circuit under test to obtain the diagnosis result. Based on the diagnostic results, a correction suggestion is obtained for the circuit under test, and the correction suggestion is fed back to a preset display.

5. A microcurrent detection device, characterized in that, The microcurrent detection device includes: The detection module is used to control the detection equipment to detect the detection voltage of the precision resistor in the constant current circuit and record the constant current in the constant current circuit. The control module is used to control the detection device to connect to the circuit under test and obtain the voltage under test of the precision resistor in the circuit under test; The first calculation module is used to calculate the voltage ratio between the voltage to be measured and the detection voltage based on the voltage to be measured and the detection voltage. The second calculation module is used to calculate the current to be measured in the circuit under test based on the voltage ratio and the constant current. The control submodule is used to control the detection device to amplify the voltage of the precision resistor in the constant current circuit, and to record the amplified data when the detection device is connected to the constant current circuit; The detection submodule is used to detect the detection voltage of the precision resistor in the constant current circuit based on the amplified data; An adjustment module is used to control the detection device to connect to the circuit under test, and to adjust the detection device based on the amplified data to obtain the amplified circuit in the detection device; An amplification module is used to amplify the voltage across the precision resistor based on the amplification circuit, so as to obtain the voltage under test of the precision resistor in the circuit under test. The detection unit is used to control the detection device to connect to the circuit under test and to perform fault detection on the circuit under test. The first acquisition submodule is used to acquire the amplified data when the detection device is connected to the constant current circuit if the circuit under test is fault-free. An adjustment submodule is used to adjust the detection device based on the amplified data and determine the safety of the adjusted detection device. The second acquisition submodule is used to obtain the amplification circuit in the detection device if the adjusted detection device is safe.

6. A microcurrent detection device, characterized in that, The microcurrent detection device includes: a memory, a processor, and a program stored in the memory for implementing the microcurrent detection method. The memory is used to store the program for implementing the microcurrent detection method; The processor is configured to execute a program that implements the microcurrent detection method to carry out the steps of the microcurrent detection method as described in any one of claims 1 to 4.

7. A storage medium, characterized in that, The storage medium stores a program for implementing a microcurrent detection method, which is executed by a processor to implement the steps of the microcurrent detection method as described in any one of claims 1 to 4.

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