Power supply detection system and method

Abstract

The invention relates to the technical field of power supply detection, and discloses a power supply detection system and method, and the system comprises a data collection module, a data calculation module, a data early warning module and an unqualified part collection module, and the data collection module comprises a historical data storage unit and a power supply detection unit. The data calculation module is used for calculating the data sent by the data collection module, and the data early warning module is used for judging the calculation result in the data calculation module and classifying the judged power supply. According to the power supply detection system and method, stability values and mean values of current and voltage are calculated, whether the mean values are in a qualified interval is judged firstly during judgment, if the mean values are in the qualified interval, the stability is judged, and if the stability is qualified, the power supply is output to be qualified; as long as one-time disqualification exists during two-time detection, disqualification is output, and the power is detected when two-time judgment is qualified, so that the detection efficiency is ensured.

Description

Technical Field

[0001] The present invention relates to the technical field of power supply detection, and in particular to a power supply detection system and method. Background Art

[0002] A power supply is a device that converts other forms of energy into electrical energy. It can be seen everywhere in daily life and has greatly facilitated people's lives. Common power supply operating parameters include output voltage (current) regulation accuracy, output voltage (current) display accuracy, operating temperature, load regulation rate, etc. When the power supply is abnormal, it can often bring considerable safety hazards to people, so it is particularly important to detect the performance of the power supply.

[0003] In the prior art, there are usually three ways to detect power supplies. The first way is to build an independent power supply test environment, including using oscilloscopes, multimeters, power analyzers, electronic loads and other detection equipment, and matching dedicated detection equipment according to different types of power supplies; the second way is to use the power supply's own detection system as a test environment; the third way is to use a dedicated detection test bench to detect the performance of the power supply.

[0004] However, existing tests all test the power supply separately and step by step, which requires manual testing by staff. At the same time, when faced with a short-circuited power supply, fire and explosion caused by high temperature are prone to occur. Summary of the invention

[0005] 1. Technical issues to be resolved

[0006] In view of the deficiencies in the prior art, the present invention provides a power supply detection system and method, which have the advantages of performing all-round detection of the power supply and ensuring the safety of the detection personnel, thereby solving the above-mentioned technical problems.

[0007] (II) Technical solution

[0008] To achieve the above object, the present invention provides the following technical solutions: a power supply detection system, comprising a data collection module, a data calculation module, a data early warning module and a non-conforming parts collection module;

[0009] The data collection module includes a historical data storage unit and a power supply detection unit. The historical data storage unit is used to store the model of the detected power supply, the current LSU, current LSI and power LSP of the historically detected qualified power supply. The power supply detection unit is used to detect the current power supply and store the current DQU, current DQI and the working temperature T of the current power supply. The power supply detection unit also includes the judgment of the short circuit of the power supply, and directly sends the short circuit detection data to the unqualified part collection module. The data collection module sends the internal data to the data calculation module;

[0010] The data calculation module is used to calculate the data sent by the data collection module, and specifically includes a current calculation unit, a current calculation unit, and a power calculation unit. The current calculation unit is used to calculate the stability of the current of the current power supply, and the current calculation unit is used to calculate the stability of the current of the current power supply. The power calculation unit is used to calculate the actual value DQP of the power of the current power supply. The data calculation module sends the calculation result to the data early warning module;

[0011] The data early warning module is used to judge the calculation results in the data calculation module. The data early warning module includes a judgment unit and an early warning unit. The judgment unit sets corresponding constraints on the calculation data of the current calculation unit, the current calculation unit, and the power calculation unit in the data calculation module. The judgment unit judges the calculation data in the data calculation module according to the constraints, and the data early warning module sends the data to the unqualified parts collection module;

[0012] The defective parts collection module classifies power supplies with different problems according to the data in the data collection module and the data early warning module.

[0013] As a preferred technical solution of the present invention, the historical data storage unit detects the model of the power supply, the current LSU, current LSI and power LSP components of the historically detected qualified power supply into a historical data set, and the specific expression is as follows:

[0014]

[0015] Among them, XH1, XH2, ..., XH n Indicates n different types of power supplies, LSU1, LSU2, ..., LSU n Indicates the current corresponding to n different types of power supplies, LSI1, LSI2, ..., LSI n Indicates the current corresponding to n different types of power supplies, LSP1, LSP2, ..., LSP n Indicates the power corresponding to n different types of power supplies.

[0016] As a preferred technical solution of the present invention, the power supply detection unit detects the current power supply and records the current current DQU and current DQI according to the detection time, specifically:

[0017] Record the power supply current DQU of the i-th model at each interval time t during the detection process i and the supply current DQI of the ith model i .

[0018] As a preferred technical solution of the present invention, the power supply detection unit detects short circuits by detecting the power supply current DQI of the i-th model.i and the power supply temperature T of the i-th model i Joint judgment, the specific judgment constraint formula is as follows:

[0019] DQI i ≥Kmax{LSI i}andT i ≥δT max

[0020] Where K and δ represent the current and temperature preset coefficients respectively, max{LSI i} represents the maximum current of the i-th model power supply in the qualified historical data, and represents the AND operation. When both constraints are met, that is, the current current exceeds the preset value and the temperature exceeds the preset value at the same time, it is judged that the power supply is short-circuited.

[0021] As a preferred technical solution of the present invention, the steps of calculating the stability of the current by the current calculation unit are as follows:

[0022] A1. Calculate the stability of the current. The specific calculation expression is as follows:

[0023]

[0024] Among them, k i,j It represents the stability value of the power supply current of the i-th power supply at the j-th moment, DQU i,j Indicates the power supply current value of the i-th model power supply at the j-th moment, DQU i,j+1 It represents the power supply current value of the i-th model power supply at the j+1th moment, t j represents the jth moment, t j+1 represents the j+1th moment, represents the mean value of the power supply current of the i-th model, and m represents m intervals;

[0025] A2. Count the stability values ​​of the power supply current at all times and form a data set of the power supply current;

[0026] A3. Send the calculation results to the data early warning module.

[0027] As a preferred technical solution of the present invention, the steps of calculating the stability of the current by the current calculation unit are as follows:

[0028] B1. Calculate the stability of the current. The specific calculation expression is as follows:

[0029]

[0030] Among them, g i,jIndicates the stability value of the power supply current of the i-th model power supply at the j-th moment, DQI i,j Indicates the power supply current value of the i-th model power supply at the j-th moment, DQI i,j+1 It represents the power supply current value of the i-th model power supply at the j+1th moment, t j represents the jth moment, t j+1 represents the j+1th moment, represents the mean value of the power supply current of the i-th model, and m represents m intervals;

[0031] B2. Count the stability values ​​of the power supply current at all times and form a data set of the power supply current;

[0032] B3. Send the calculation results to the data warning module.

[0033] As a preferred technical solution of the present invention, the specific steps of setting the current and voltage constraints in the data warning module are as follows:

[0034] C1. First Make a judgment, if Then execute step C2. If not, execute step C3 and output voltage is unqualified. min ,LSU max Indicates the qualified minimum and maximum values ​​of voltage;

[0035] C2. Determine k i,j Is it less than the voltage stability value k0? If so, the output voltage is qualified; if not, the voltage output is unqualified;

[0036] C3. Yes Make a judgment, if Then execute C4. If it is not satisfied, the judgment ends and the output current is unqualified. min ,LSI max Indicates the qualified minimum and maximum values ​​of the current;

[0037] C4. Judge g i,j Is it less than the current stable value g0? If so, the output current is qualified; if not, the current output is unqualified.

[0038] As a preferred technical solution of the present invention, the data early warning module calls the power calculation unit in the data calculation module only when the current and voltage are qualified, and calculates the power value DQP i Make a judgment, if DQP i <LSI min or DQP i >LSI max The output power is unqualified.

[0039] As a preferred technical solution of the present invention, the unqualified parts collection module separately collects unqualified voltage output, unqualified current output and unqualified power output.

[0040] The present invention also provides a power supply detection method, which uses the above-mentioned power supply detection system and includes the following steps:

[0041] S1. Collect the model of the historical power supply, the current LSU, current LSI and power LSP of the historical qualified power supply through the data collection module, detect the current power supply at the same time, and store the current DQU, current DQI and working temperature T of the current power supply;

[0042] S2, calculate the data sent by the data collection module through the data calculation module, and send the data to the data early warning module;

[0043] S3. The data early warning module is used to judge the calculation results in the data calculation module, and separately collect the unqualified voltage output, unqualified current output and unqualified power output according to the unqualified parts collection module.

[0044] Compared with the prior art, the present invention provides a power supply detection system and method, which have the following beneficial effects:

[0045] 1. The present invention calculates the stability value and mean value of the current and voltage. At the same time, when judging, it first judges whether the mean value is within the qualified interval. If it is within the qualified interval, the stability is judged. If the stability is qualified, it will be output as qualified. As long as there is one unqualified in two tests, unqualified will be output. The power will be tested only after two qualified judgments, thereby ensuring the detection efficiency.

[0046] 2. The present invention directly identifies the short circuit, that is, when the current current exceeds the preset value and the temperature exceeds the preset value at the same time, it is determined that the power supply has a short circuit, and the data early warning module immediately cuts off the circuit to ensure the safety of the detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0047] Figure 1 It is a schematic diagram of the system framework of the present invention;

[0048] Figure 2 It is a schematic diagram of the process of the present invention. DETAILED DESCRIPTION

[0049] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not 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.

[0050] See also Figure 1-2 , a power supply detection system, including a data collection module, a data calculation module, a data early warning module and a non-conforming parts collection module;

[0051] The data collection module includes a historical data storage unit and a power supply detection unit. The historical data storage unit is used to store the model of the detected power supply, the current LSU, current LSI and power LSP of the historically detected qualified power supply. The power supply detection unit is used to detect the current power supply and store the current DQU, current DQI and the working temperature T of the current power supply. The power supply detection unit also includes the judgment of the short circuit of the power supply and directly sends the short circuit detection data to the unqualified part collection module. The data collection module sends the internal data to the data calculation module;

[0052] The historical data storage unit compiles the detected power supply model, the current LSU, current LSI and power LSP components of the historically detected qualified power supplies into a historical data set. The specific expression is as follows:

[0053]

[0054] Among them, XH1, XH2, ..., XH n Indicates n different types of power supplies, LSU1, LSU2, ..., LSU n Indicates the current corresponding to n different types of power supplies, LSI1, LSI2, ..., LSI n Indicates the current corresponding to n different types of power supplies, LSP1, LSP2, ..., LSP n Indicates the power corresponding to n different types of power supplies.

[0055] The data calculation module is used to calculate the data sent by the data collection module, and specifically includes a current calculation unit, a current calculation unit, and a power calculation unit. The current calculation unit is used to calculate the stability of the current of the current power supply, and the current calculation unit is used to calculate the stability of the current of the current power supply. The power calculation unit is used to calculate the actual value DQP of the power of the current power supply. The data calculation module sends the calculation result to the data early warning module;

[0056] The power supply detection unit detects the current power supply and records the current current DQU and current DQI according to the detection time, specifically:

[0057] Record the power supply current DQU of the i-th model at each interval time t during the detection process i and the supply current DQI of the ith model i .

[0058] Furthermore, the power supply detection unit detects short circuits by detecting the power supply current DQI of the i-th model. i and the power supply temperature T of the i-th model i Joint judgment, the specific judgment constraint formula is as follows:

[0059] DQI i ≥Kmax{LSI i}andT i ≥δT max

[0060] Where K and δ represent the current and temperature preset coefficients respectively, max{LSI i} represents the maximum current of the i-th model power supply in the qualified historical data, and represents the AND operation. When both constraints are met, that is, the current current exceeds the preset value and the temperature exceeds the preset value at the same time, it is judged that the power supply is short-circuited, and the data warning module immediately cuts off the circuit to ensure the safety of detection.

[0061] Furthermore, the steps of calculating the stability of the current by the current calculation unit are as follows:

[0062] A1. Calculate the stability of the current. The specific calculation expression is as follows:

[0063]

[0064] Among them, k i,j It represents the stability value of the power supply current of the i-th power supply at the j-th moment, DQU i,j Indicates the power supply current value of the i-th model power supply at the j-th moment, DQU i,j+1 It represents the power supply current value of the i-th model power supply at the j+1th moment, t j represents the jth moment, t j+1 represents the j+1th moment, represents the mean value of the power supply current of the i-th model, and m represents m intervals;

[0065] A2. Count the stability values ​​of the power supply current at all times and form a data set of the power supply current;

[0066] A3. Send the calculation results to the data warning module.

[0067] Furthermore, the steps of calculating the stability of the current by the current calculation unit are as follows:

[0068] B1. Calculate the stability of the current. The specific calculation expression is as follows:

[0069]

[0070] Among them, g i,j Indicates the stability value of the power supply current of the i-th model power supply at the j-th moment, DQI i,j Indicates the power supply current value of the i-th model power supply at the j-th moment, DQI i,j+1 It represents the power supply current value of the i-th model power supply at the j+1th moment, t j represents the jth moment, t j+1 represents the j+1th moment, represents the mean value of the power supply current of the i-th model, and m represents m intervals;

[0071] B2. Count the stability values ​​of the power supply current at all times and form a data set of the power supply current;

[0072] B3. Send the calculation results to the data warning module.

[0073] The data early warning module is used to judge the calculation results in the data calculation module. The data early warning module includes a judgment unit and an early warning unit. The judgment unit sets corresponding constraints on the calculation data of the current calculation unit, the current calculation unit, and the power calculation unit in the data calculation module. The judgment unit judges the calculation data in the data calculation module according to the constraints, and the data early warning module sends the data to the unqualified parts collection module;

[0074] The specific steps for setting the current and voltage constraints in the data warning module are as follows:

[0075] C1. First Make a judgment, if Then execute step C2. If not, execute step C3 and output voltage is unqualified. min ,LSU max Indicates the qualified minimum and maximum values ​​of voltage;

[0076] C2. Determine k i,j Is it less than the voltage stability value k0? If so, the output voltage is qualified; if not, the voltage output is unqualified;

[0077] C3. Yes Make a judgment, if Then execute C4. If it is not satisfied, the judgment ends and the output current is unqualified. min ,LSI max Indicates the qualified minimum and maximum values ​​of the current;

[0078] C4. Judge g i,j Is it less than the current stable value g0? If so, the output current is qualified; if not, the current output is unqualified.

[0079] By calculating the stability value and mean value of current and voltage, and judging whether the mean value is within the qualified range, the stability is judged if it is within the qualified range. If the stability is qualified, the output is qualified. If there is one unqualified in two tests, the output is unqualified. The power is tested only after two qualified judgments, thus ensuring the detection efficiency.

[0080] Furthermore, the data warning module calls the power calculation unit in the data calculation module only when the current and voltage are qualified, and calculates the power value DQP i Make a judgment, if DQP i <LSI min or DQP i >LSI max The output power is unqualified

[0081] The defective parts collection module classifies power supplies with different problems according to the data in the data collection module and the data warning module. Specifically, the defective parts collection module separately collects power supplies with defective voltage output, current output and power output.

[0082] The present invention also provides a power supply detection method, which uses the above-mentioned power supply detection system and includes the following steps:

[0083] S1. Collect the model of the historical power supply, the current LSU, current LSI and power LSP of the historical qualified power supply through the data collection module, detect the current power supply at the same time, and store the current DQU, current DQI and working temperature T of the current power supply;

[0084] S2, calculate the data sent by the data collection module through the data calculation module, and send the data to the data early warning module;

[0085] S3. The data early warning module is used to judge the calculation results in the data calculation module, and separately collect the unqualified voltage output, unqualified current output and unqualified power output according to the unqualified parts collection module.

[0086] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A power supply detection system, characterized in that: It includes data collection module, data calculation module, data early warning module and non-conforming parts collection module; The data collection module includes a historical data storage unit and a power supply detection unit. The historical data storage unit is used to store the model of the detected power supply, the current LSU, the current ISI and the power LSP of the historically detected qualified power supply. The power supply detection unit is used to detect the current power supply and store the current DQU, the current DQI and the working temperature T of the current power supply. The power supply detection unit also includes a judgment on the short circuit of the power supply, and directly sends the short circuit detection data to the unqualified part collection module. The data collection module sends the internal data to the data calculation module; The data calculation module is used to calculate the data sent by the data collection module, and specifically includes a current calculation unit, a current calculation unit, and a power calculation unit. The current calculation unit is used to calculate the stability of the current of the current power supply, and the current calculation unit is used to calculate the stability of the current of the current power supply. The power calculation unit is used to calculate the actual value DQP of the power of the current power supply. The data calculation module sends the calculation result to the data early warning module; The data early warning module is used to judge the calculation results in the data calculation module. The data early warning module includes a judgment unit and an early warning unit. The judgment unit sets corresponding constraints on the calculation data of the current calculation unit, the current calculation unit, and the power calculation unit in the data calculation module. The judgment unit judges the calculation data in the data calculation module according to the constraints, and the data early warning module sends the data to the unqualified parts collection module; The defective parts collection module classifies power supplies with different problems according to the data in the data collection module and the data early warning module.

2. A power supply detection system according to claim 1, characterized in that: The historical data storage unit detects the model of the power supply, the current LSU, current LSI and power LSP of the historically qualified power supply into a historical data set, and the specific expression is as follows: Among them, XH1, XH2, ..., XHn represent n different types of power supplies, LSU1, LSU2, ..., LSU n Indicates the current corresponding to n different types of power supplies, LSI1, LSI2, ..., LSI n Indicates the current corresponding to n different types of power supplies, LSP1, LSP2, ..., LSP n Indicates the power corresponding to n different types of power supplies.

3. A power supply detection system according to claim 2, characterized in that: The power supply detection unit detects the current power supply and records the current current DQU and current DQI according to the detection time, specifically: Record the power supply current DQU of the i-th model at each interval time t during the detection process i and the supply current DQI of the ith model i .

4. A power supply detection system according to claim 2, characterized in that: The power supply detection unit detects short circuit by detecting the power supply current DQI of the i-th model. i and the power supply temperature T of the i-th model i Joint judgment, the specific judgment constraint formula is as follows: DQI i ≥Kmax{LSI i }andT i ≥δT max Where K and δ represent the current and temperature preset coefficients respectively, max{LSI i } represents the maximum current of the i-th model power supply in the qualified historical data, and represents the AND operation. When both constraints are met, that is, the current current exceeds the preset value and the temperature exceeds the preset value at the same time, it is judged that the power supply is short-circuited.

5. A power supply detection system according to claim 3, characterized in that: The steps of calculating the stability of the current by the current calculation unit are as follows: A1. Calculate the stability of the current. The specific calculation expression is as follows: Among them, k i,j It represents the stability value of the power supply current of the i-th power supply at the j-th moment, DQU i,j Indicates the power supply current value of the i-th model power supply at the j-th moment, DQU i,j+1 It represents the power supply current value of the i-th model power supply at the j+1th moment, t j represents the jth moment, t j+1 represents the j+1th moment, represents the mean value of the power supply current of the i-th model, and m represents m intervals; A2. Count the stability values ​​of the power supply current at all times and form a data set of the power supply current; A3. Send the calculation results to the data warning module.

6. A power supply detection system according to claim 5, characterized in that: The steps of calculating the stability of the current by the current calculation unit are as follows: B1. Calculate the stability of the current. The specific calculation expression is as follows: Among them, g i,j Indicates the stability value of the power supply current of the i-th model power supply at the j-th moment, DQI i,j Indicates the power supply current value of the i-th model power supply at the j-th moment, DQI i,j+1 It represents the power supply current value of the i-th model power supply at the j+1th moment, t j represents the jth moment, t j+1 represents the j+1th moment, represents the mean value of the power supply current of the i-th model, and m represents m intervals; B2. Count the stability values ​​of the power supply current at all times and form a data set of the power supply current; B3. Send the calculation results to the data warning module.

7. A power supply detection system according to claim 6, characterized in that: The specific steps of setting the current and voltage constraints in the data warning module are as follows: C1. First Make a judgment, if Then execute step C2. If not, execute step C3 and output voltage is unqualified. min ,LSU max Indicates the qualified minimum and maximum values ​​of voltage; C2. Determine k i,j Is it less than the voltage stability value k0? If so, the output voltage is qualified; if not, the voltage output is unqualified; C3. Yes Make a judgment, if Then execute C4. If it is not satisfied, the judgment ends and the output current is unqualified. min ,LSI max Indicates the qualified minimum and maximum values ​​of the current; C4. Judge g i,j Is it less than the current stable value g0? If so, the output current is qualified; if not, the current output is unqualified.

8. A power supply detection system according to claim 7, characterized in that: The data warning module calls the power calculation unit in the data calculation module only when the current and voltage are qualified, and calculates the power value DQP i Make a judgment, if DQP i <LSI min or DQP i >LSI max The output power is unqualified.

9. A power supply detection system according to claim 8, characterized in that: The unqualified parts collection module separately collects unqualified voltage output, unqualified current output and unqualified power output.

10. A power supply detection method, using a power supply detection system according to any one of claims 1 to 9, characterized in that: The following steps are involved: S1. Collect the model of the historical power supply, the current LSU, current LSI and power LSP of the historical qualified power supply through the data collection module, detect the current power supply at the same time, and store the current DQU, current DQI and working temperature T of the current power supply; S2, calculate the data sent by the data collection module through the data calculation module, and send the data to the data early warning module; S3. The data early warning module is used to judge the calculation results in the data calculation module, and separately collect the unqualified voltage output, unqualified current output and unqualified power output according to the unqualified parts collection module.

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