CN114487652A - Fault verification method for long-term power-on equipment - Google Patents
Fault verification method for long-term power-on equipment Download PDFInfo
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- CN114487652A CN114487652A CN202111659375.5A CN202111659375A CN114487652A CN 114487652 A CN114487652 A CN 114487652A CN 202111659375 A CN202111659375 A CN 202111659375A CN 114487652 A CN114487652 A CN 114487652A
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Abstract
The invention discloses a fault verification method for long-term power-up equipment, which is designed for long-term power-up equipment to be tested. The tested equipment is a key intermediate equipment of a system, needs to have the application characteristic of long-time uninterrupted power-on work, and has extremely high reliability requirement so as to ensure the normal operation of the whole system. The method can judge whether the tested equipment has faults and the health state of the tested equipment. When a fault exists, the method can obtain the position of the fault through retest verification, and is convenient to check; when no fault exists, the method can obtain the health state of the current equipment to be tested through retest verification, and retest according to the health state to judge whether the equipment to be tested needs to be maintained. The method can reduce the failure rate of long-term power-on application of the product and has the characteristics of real and sufficient verification.
Description
Technical Field
The invention relates to the technical field of power-on fault verification, in particular to a fault verification method for long-term power-on equipment.
Background
The high-reliability equipment powered continuously for a long time needs to work stably for a long time, and as key equipment for system operation, the equipment needs to be applied to signal processing, signal relaying, flow control and the like, and has various signal input and output and long-term continuous operation. The long-term continuous power-up is realized, the uninterrupted continuous work is realized, and the running time is far longer than the production test period of the product; the equipment is a system-class customized product and comprises a plurality of complex and huge component units. In order to ensure that the long-term power-up fault rate index of the equipment meets the requirement, a reliability test is required according to a relevant standard and a reliability index, and for the reliability test of the complex equipment, a test method of artificially judging at intervals is generally adopted, the test means is limited by factors such as test time and the like, the short-term static test is mostly based on, the difference from the practical application is realized, the fault excitation capability is limited, and the fault is difficult to find in the test.
Therefore, a fault verification method is needed to verify the fault of the long-term power-on equipment so as to ensure the normal operation of the whole system.
Disclosure of Invention
In view of this, the present invention provides a fault verification method for a long-term power-up device, which can determine whether a tested device has a fault and its health status, and reduce the fault rate of the long-term power-up application of the product.
In order to realize the purpose of the invention, the technical scheme of the invention is as follows:
a fault verification method for long-term power-on equipment is used for performing fault verification on equipment to be tested which is powered on for more than one year continuously, the equipment to be tested comprises a switching execution part, an instruction receiving part and an instruction response part, the instruction receiving part is used for receiving a communication instruction, the instruction response part is used for responding to the received communication instruction and outputting a control instruction of the switching execution part, the switching execution part is used for executing the control instruction, and the switching execution part comprises a relay as a switch for executing the control instruction, and the method specifically comprises the following steps:
step one, the tested equipment receives an externally input communication command and starts a self-monitoring state.
Setting the voltage of the relay to enable the relay to be in an open or closed state; the voltage across the relay is within the normal power-up range of the equipment under test.
Detecting and acquiring a current test result of the tested equipment, wherein the test result comprises output voltage and execution result data of the tested equipment; judging the current state of the tested equipment:
when at least one of the output voltage and the execution result data exceeds the allowable range, carrying out retesting, namely applying the same voltage as the current detection to the two ends of the relay, and detecting the output voltage and the execution result data of the equipment to be detected again to serve as retesting results; when the retest result is consistent with the current test result and the retest result is that the output voltage and the execution result data are abnormal, the fault point is an instruction receiving part of the tested equipment and a switching execution part of the relay; when the retest results are consistent, and the retest results are that the output voltage is normal and the execution result data is abnormal, the fault point is considered as a command response part of the tested equipment; and when the retest results are consistent, and the retest results are that the output voltage is abnormal and the execution result data is normal, the fault point is an equipment instruction response part and a relay switching execution part.
And when the output voltage and the execution result data do not exceed the allowable range, repeating the second step and the third step, continuously detecting the output voltage, and performing secondary partition evaluation on the output voltage to obtain the health state result of the tested equipment.
When the health state result is not good, applying bias voltage outside the normal power-on range to the two ends of the relay, and retesting the result; and when one of the output voltage in the retest result and the execution result data exceeds the allowable range, the equipment to be tested needs to be maintained.
Further, the normal power-up range is 0V to 28.5V.
Furthermore, when the relay is switched off, the allowable range of the output voltage is 0V-0.5V.
Further, when the relay is closed, the allowable range of the output voltage is 27.5V to 28.5V.
Further, the health status results are:
the gears for setting the output voltage comprise a first gear, a second gear and a third gear:
the range of the first gear is 27.9V-28.1V; the interval range of the second gear is 27.7V-27.9V and 28.1V-28.3V; the interval range of third gear is 27.5V-27.7V and 28.3V-28.5V.
Setting a time period for continuous testing, and judging all testing results in the time period as follows:
when the output voltage of more than 60% is in the first gear and the output voltage of less than 20% is in the third gear, the health state result of the tested equipment is good.
When the output voltage of less than 60% is in the first gear and the output voltage of less than 20% is in the third gear, the health state result of the tested equipment is poor.
When the output voltage of less than 60% is in the first gear and the output voltage of more than 20% is in the third gear, the health state result of the tested equipment is poor.
Has the advantages that:
the invention provides a fault verification method for long-term power-up equipment. The tested equipment is a key intermediate equipment of a system, needs to have the application characteristic of long-time uninterrupted power-on work, and has extremely high reliability requirement so as to ensure the normal operation of the whole system. The method can judge whether the tested equipment has faults and the health state of the tested equipment. When a fault exists, the method can obtain the position of the fault through retest verification, and is convenient to check; when no fault exists, the method can obtain the health state of the current equipment to be tested through retest verification, and retest according to the health state to judge whether the equipment to be tested needs to be maintained. The method can reduce the failure rate of long-term power-on application of the product and has the characteristics of real and sufficient verification.
Drawings
FIG. 1 is a flow chart of the method of the present invention.
FIG. 2 is a block diagram of a test platform implemented by the method of the present invention.
Detailed Description
The invention is described in detail below by way of example with reference to the accompanying drawings.
The invention provides a fault verification method for long-term power-on equipment, which is used for performing fault verification on the tested equipment powered for more than one year continuously, wherein the tested equipment comprises a switching execution part, an instruction receiving part and an instruction response part, the instruction receiving part is used for receiving a communication instruction, the instruction response part is used for responding the received communication instruction and outputting a control instruction of the switching execution part, the switching execution part is used for executing the control instruction, and the switching execution part comprises a relay as a switch for executing the control instruction, and the method specifically comprises the following steps:
step one, the tested equipment receives an externally input communication command and starts a self-monitoring state. After the self-monitoring state is started, the equipment under test sends execution result data to the test platform shown in fig. 2.
Setting the voltage of the relay to enable the relay to be in an open or closed state; the voltage across the relay is within the normal power-up range of the equipment under test. In the embodiment of the invention, the normal power-on range is 0V-28.5V.
In the embodiment of the invention, when the relay is disconnected, the allowable range of the output voltage is 0V-0.5V; when the relay is closed, the allowable range of the output voltage is 27.5V-28.5V.
And step three, detecting and acquiring a current test result of the tested equipment, wherein the test result comprises the output voltage and execution result data of the tested equipment. In the embodiment of the invention, the execution result data is the on-off result of the relay. Judging the current state of the tested equipment according to the output voltage and the execution result data:
when at least one of the output voltage and the execution result data exceeds the allowable range, carrying out retesting, namely applying the same voltage as the current detection to the two ends of the relay, and detecting the output voltage and the execution result data of the equipment to be detected again to serve as retesting results; when the retest result is consistent with the current test result and the retest result is that the output voltage and the execution result data are abnormal, the fault point is an equipment instruction receiving and relay switching execution part; when the retest results are consistent and the retest results are that the output voltage is normal and the execution result data is abnormal, the fault point is considered as a device instruction response part; and when the retest results are consistent, and the retest results are that the output voltage is abnormal and the execution result data is normal, the fault point is an equipment instruction response part and a relay switching execution part.
And when the output voltage and the execution result data do not exceed the allowable range, repeating the second step and the third step, continuously detecting the output voltage, and performing secondary partition evaluation on the output voltage to obtain the health state result of the tested equipment. In the embodiment of the invention, the health status result is as follows:
the gears for setting the output voltage comprise a first gear, a second gear and a third gear:
the interval range of the first gear is 27.9V-28.1V; the range of the second gear is 27.7V-27.9V and 28.1V-28.3V; the interval range of third gear is 27.5V-27.7V and 28.3V-28.5V.
Setting a time period for continuous testing, and judging all testing results in the time period as follows:
when the output voltage of more than 60% is in the first gear and the output voltage of less than 20% is in the third gear, the health state result of the tested equipment is good; when the output voltage of less than 60% is in the first gear and the output voltage of less than 20% is in the third gear, the health state result of the tested equipment is poor; when the output voltage of less than 60% is in the first gear and the output voltage of more than 20% is in the third gear, the health state result of the tested equipment is poor.
When the health state result is not good, applying bias voltage outside a normal power-on range to the two ends of the relay, such as from normal 28.0V to 28.3V, and retesting the result; and when one of the output voltage in the retest result and the execution result data exceeds the allowable range, the equipment to be tested needs to be maintained.
In the embodiment of the present invention, as shown in fig. 1, the present method is further explained.
In the steps of the corresponding method, the test platform has two modes of longitudinal and transverse, and can be configured in a mixed mode. The longitudinal mode is distinguished based on a discrimination method and is divided into a general mode (quantitative simulation) and a growth mode (trend simulation). The general mode is a quantitative simulation for judging results according to a single test, and the growth mode is a trend simulation for judging trends according to multiple tests. In the third step of the method, when one of the output voltage and the execution result data exceeds the allowable range, the quantitative simulation of a general mode is carried out, and when both of the output voltage and the execution result data do not exceed the allowable range, the trend simulation of a growth mode is carried out.
The lateral mode is classified into a normal mode (normal simulation) and a failure mode (failure simulation and pull-bias simulation). Wherein the normal mode is a normal simulation of the excitation signal within a normal power-up range; the fault mode comprises fault simulation of fault injection and pull-out simulation of excitation outside an allowable range. The second step of the method is the simulation operation of the normal mode, and in the third step, when the health state result is not good, the bias voltage outside the normal power-up range is applied to the two ends of the relay, and the retest result is the bias simulation.
In the steps of the corresponding method, two categories of dynamic testing and static testing exist in the stage of test execution. The dynamic test is divided into a single-index dynamic test and a dynamic flow test. The single-index dynamic test is that the dynamic excitation source dynamically changes within the full range allowed by the design, and the dynamic process test is a process task test which adopts dynamic excitation and simulates practical application.
The static test is divided into a single-index static test and a single-pass single-step test. In the third step of the corresponding method, the method can output two test results: a failure determination, i.e., whether a failure exists; and evaluating the trend, namely the health state of the tested equipment. When the method determines that the equipment under test contains a fault or is in a poor health state, the results are retested and verified. And if the fault does not exist, performing secondary evaluation to obtain a health state result (namely a trend evaluation result) of the tested equipment. The single-index static test is that the excitation source adopts a fixed excitation value to test a single index within a design allowable range, and the single-flow single-step test is that the single index adopts a single-step flow to test.
For the test of the tested equipment with long-term power-up, the initial test flow is a dynamic flow test, namely the method comprises the following steps: "change the voltage across the relay" and "the voltage is within the normal power-up range of the equipment under test".
As shown in fig. 2, the testing platform of the present invention includes a signal control unit, a dynamic/static signal generating unit, a single-time signal collection/reception comprehensive model comparing unit, a signal collection/reception trend model comparing unit, and a dynamic/static signal collection/reception unit. And the dynamic/static signal generating unit outputs a dynamic/static signal output matrix which is transmitted to the tested equipment. The output voltage and the execution result data of the tested equipment are transmitted to the dynamic/static signal acquisition/receiving unit, and the dynamic/static signal acquisition/receiving unit simultaneously transmits the output voltage and the execution result data to the single-time signal acquisition/receiving comprehensive model comparison unit and the signal acquisition/receiving trend model comparison unit.
In summary, the above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (5)
1. A fault verification method for long-term power-on equipment is characterized in that fault verification is carried out on equipment to be tested which is powered on for more than one year continuously, the equipment to be tested comprises a switching execution part, an instruction receiving part and an instruction response part, the instruction receiving part is used for receiving a communication instruction, the instruction response part is used for responding the received communication instruction and outputting a control instruction for switching the execution part, the switching execution part is used for executing the control instruction, and the switching execution part comprises a relay as a switch for executing the control instruction, and the fault verification method specifically comprises the following steps:
firstly, receiving an externally input communication instruction by a device to be detected, and starting a self-monitoring state;
setting the voltage of the relay to enable the relay to be in an open or closed state; the voltage at the two ends of the relay is within the normal power-on range of the tested equipment;
detecting and acquiring a current test result of the tested equipment, wherein the test result comprises output voltage and execution result data of the tested equipment; judging the current state of the tested equipment:
when at least one of the output voltage and the execution result data exceeds the allowable range, carrying out retesting, namely applying the same voltage as the current detection to the two ends of the relay, and detecting the output voltage and the execution result data of the tested equipment again to serve as a retesting result; when the retest result is consistent with the current test result and the retest result is that the output voltage and the execution result data are abnormal, the fault point is an instruction receiving part of the tested equipment and a switching execution part of the relay; when the retest results are consistent, and the retest results are that the output voltage is normal and the execution result data is abnormal, the fault point is considered as a command response part of the tested equipment; when the retest results are consistent, and the retest results are that the output voltage is abnormal and the execution result data is normal, the fault point is an equipment instruction response part and a relay switching execution part;
when the output voltage and the execution result data do not exceed the allowable range, repeating the second step and the third step, continuously detecting the output voltage, and performing secondary partition evaluation on the output voltage to obtain a health state result of the tested equipment;
when the health state result is not good, applying bias voltage outside the normal power-on range to the two ends of the relay, and retesting the result; and when one of the output voltage in the retest result and the execution result data exceeds an allowable range, the equipment to be tested needs to be maintained.
2. The method of claim 1, wherein the normal power-up range is 0V to 28.5V.
3. The method of claim 1, wherein the allowable range of the output voltage when the relay is turned off is 0V to 0.5V.
4. The method of claim 3, wherein when the relay is closed, the allowable range of the output voltage is 27.5V to 28.5V.
5. The method of claim 1, wherein the health status result is:
the gears for setting the output voltage comprise a first gear, a second gear and a third gear:
the interval range of the first gear is 27.9V-28.1V; the interval range of the second gear is 27.7V-27.9V and 28.1V-28.3V; the interval range of the third gear is 27.5V-27.7V and 28.3V-28.5V;
setting a time period for continuous testing, and judging all testing results in the time period as follows:
when the output voltage of more than 60% is in the first gear and the output voltage of less than 20% is in the third gear, the health state result of the tested equipment is good;
when the output voltage of less than 60% is in the first gear and the output voltage of less than 20% is in the third gear, the health state result of the tested equipment is poor;
when the output voltage of less than 60% is in the first gear and the output voltage of more than 20% is in the third gear, the health state result of the tested equipment is poor.
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117148091A (en) * | 2023-11-01 | 2023-12-01 | 杭州高坤电子科技有限公司 | Semiconductor test method, system, terminal and storage medium |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN117148091A (en) * | 2023-11-01 | 2023-12-01 | 杭州高坤电子科技有限公司 | Semiconductor test method, system, terminal and storage medium |
| CN117148091B (en) * | 2023-11-01 | 2024-02-06 | 杭州高坤电子科技有限公司 | Semiconductor test method, system, terminal and storage medium |
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