CN110531247A - A kind of the PCBA method of inspection and device of emergency luminaire - Google Patents
A kind of the PCBA method of inspection and device of emergency luminaire Download PDFInfo
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- CN110531247A CN110531247A CN201910757050.7A CN201910757050A CN110531247A CN 110531247 A CN110531247 A CN 110531247A CN 201910757050 A CN201910757050 A CN 201910757050A CN 110531247 A CN110531247 A CN 110531247A
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- 238000000034 method Methods 0.000 title claims abstract description 34
- 238000007689 inspection Methods 0.000 title claims abstract description 27
- 238000012360 testing method Methods 0.000 claims abstract description 142
- 238000012545 processing Methods 0.000 claims abstract description 77
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/2806—Apparatus therefor, e.g. test stations, drivers, analysers, conveyors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/28—Testing of electronic circuits, e.g. by signal tracer
- G01R31/2801—Testing of printed circuits, backplanes, motherboards, hybrid circuits or carriers for multichip packages [MCP]
- G01R31/281—Specific types of tests or tests for a specific type of fault, e.g. thermal mapping, shorts testing
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Abstract
The present invention relates to test equipment technical fields, a kind of PCBA method of inspection of emergency luminaire is disclosed, the method of inspection the following steps are included: verifying attachment self-test step, the access detecting step of PCBA, the self-test step of PCBA, the direction instruction checking procedure of PCBA: the processing unit is sent to the PCBA to be tested by the master unit and examines signal, and whether the inspection signal for verifying return is correct, if so, direction instruction function is normal, otherwise, direction instruction dysfunction.Detection signal is sent to PCBA to be tested through the processing unit, and verify whether feedback signal correctly can be completed the Function detection of PCBA, and it can be to avoid various test keys be triggered manually, operating method is simple, testing efficiency is improved, and advantageously reduces the erroneous judgement probability of test result.Invention additionally discloses a kind of PCBA verifying attachments of emergency luminaire.
Description
Technical field
The present invention relates to test equipment technical fields, and in particular to a kind of the PCBA method of inspection and device of emergency luminaire.
Background technique
PCBA (Printed Circuit Board Assembly, printed circuit assembly are generally fitted in emergency luminaire
Plate), in production, need to carry out functional check to PCBA, whether the function in order to detect PCBA normal, performance indicator whether
Meet product standard requirement.The PCBA test of existing emergency luminaire is that PCBA is placed in test device mostly, then manually
The various test keys of trigger test device, this test mode is cumbersome, testing efficiency is low, and be easy to cause PCBA's
Function missing inspection and testing result misjudgment.
Summary of the invention
In view of the deficiencies of the prior art, it is an object of the invention at least solve the technical problems existing in the prior art it
One, a kind of PCBA method of inspection of emergency luminaire is provided, existing test mode is cumbersome, testing efficiency is low for solving
Problem.
The contents of the present invention are as follows:
A kind of PCBA verifying attachment of emergency luminaire, applied to the PCBA verifying attachment of emergency luminaire, the verifying attachment packet
It includes processing unit and the master unit connecting respectively with the processing unit and from unit, the master unit passes through two-wire bus
Connect respectively with described from unit with PCBA to be tested, the method for inspection the following steps are included:
The self-test step of verifying attachment: after the verifying attachment powers on, the processing unit detects the fortune of the master unit
Row situation；
The access detecting step of PCBA: after PCBA to be tested access, the processing unit detect the PCBA to be tested with
The connection state of the verifying attachment；
The self-test step of PCBA: the processing unit sends PCBA self-test to the PCBA to be tested by the master unit
Signal, and whether the PCBA self-test signal for verifying return is correct, if so, the route of the PCBA to be tested is normal, otherwise, institute
State the line anomalies of PCBA to be tested；
The direction instruction checking procedure of PCBA: the processing unit is sent by the master unit to the PCBA to be tested
Signal is examined, and whether the inspection signal for verifying return is correct, if so, direction instruction function is normal, otherwise, direction instruction function
It can be abnormal.
Preferably, the verifying attachment self-test step specifically includes the following steps:
A1. the processing unit sends the first self-test signal to the master unit；
A2. the master unit is modulated first self-test signal, and modulated first self-test signal is sent
To described from unit；
A3. described to be demodulated from unit by modulated first self-test signal, and by the first self-test signal after demodulation
It is sent to the processing unit；
A4. the processing unit verifies the first self-test signal after demodulation, if check results are correct, the master
The data transmission line road normal operation of unit, otherwise, the data transmission line road of the master unit are operating abnormally.
Preferably, the self-test step of the verifying attachment is further comprising the steps of:
A5. the processing unit sends the second self-test signal from unit to described；
A6. described that second self-test signal is modulated from unit, and modulated second self-test signal is sent
To the master unit；
A7. the master unit demodulates modulated second self-test signal, and by the second self-test signal after demodulation
It is sent to the processing unit；
A8. the processing unit verifies the second self-test signal after demodulation, if check results are correct, the master
The data reception lines normal operation of unit, otherwise, the data transmission line road of the master unit are operating abnormally.
Preferably, the PCBA access detecting step specifically includes the following steps:
B1. the processor sends access detection signal to the master unit；
B2. access detection signal is modulated by the master unit, and modulated access detection signal is sent
To the PCBA to be tested；
B3. after the PCBA to be tested receives modulated access detection signal, access detection signal is returned to
The master unit；
B4. the master unit will be demodulated from the access of the PCBA to be tested detection signal, and will be after demodulation
Access detection signal is sent to the processing unit；
B5. the processing unit verifies the access detection signal after demodulation, if check results are correct, it is described to
It is normal to test PCBA access, otherwise, the PCBA access to be tested is abnormal.
Preferably, the direction checking procedure of the PCBA include left-hand instruction checking procedure, dextrad instruction checking procedure and
Two-way instruction checking procedure.
Preferably, the PCBA self-test step specifically includes the following steps:
C1. the processing unit sends PCBA self-test signal to the master unit；
C2. the PCBA self-test signal is modulated by the master unit, and modulated PCBA self-test signal is sent
To the PCBA to be tested；
C3. the PCBA to be tested receives modulated PCBA self-test signal, and the PCBA self-test signal is returned to institute
State master unit；
C4. the master unit demodulates the PCBA self-test signal from the PCBA to be tested, and will be after demodulation
PCBA self-test signal is sent to the processing unit；
C5. the processing unit verifies the PCBA self-test signal after demodulation, if check results are correct, it is described to
The route for testing PCBA is normal, otherwise, the line anomalies of the PCBA to be tested.
Preferably, the PCBA direction checking procedure specifically includes the following steps:
D1. the processing unit sending direction detection signal gives the master unit；
D2. the angle detecting signal is modulated by the master unit, and modulated angle detecting signal is sent
To the PCBA to be tested；
D3. the PCBA to be tested receives modulated dextrad and detects signal, and direction detection signal is returned to institute
State master unit；
D4. the master unit demodulates the angle detecting signal from the PCBA to be tested, and will be after demodulation
Angle detecting signal is sent to the processing unit；
D5. the processing unit verifies the angle detecting signal after demodulation, if check results are correct, it is described to
The direction instruction function of testing PCBA is normal, otherwise, the direction instruction dysfunction of the PCBA to be tested.
Preferably, the angle detecting signal includes left-hand detection signal, dextrad detection signal and two-way detection signal.
The present invention also provides a kind of PCBA verifying attachments of emergency luminaire, numerous for solving existing test device operation
Problem trivial, testing efficiency is low.
A kind of PCBA verifying attachment of emergency luminaire, including power supply unit, from unit and respectively with said supply unit
Processing unit, master unit and the display unit of connection；
The processing unit is connect with the master unit, from unit and display unit respectively, and the processing unit is for sending out
Signal, reception and verification feedback signal are surveyed in inspection；
The master unit is connect with described from unit and PCBA to be tested by two-wire bus, and for carrying out signal
Modulation or demodulation, and power to be described from unit with the PCBA to be tested；
It is described to be used to detect the master unit from unit.
Preferably, the detection signal includes the first self-test signal, the second self-test signal, PCBA access detection signal, a left side
To detection signal, dextrad detection signal and two-way detection signal；
First self-test signal is used to detect the data transmission line road operation conditions of the master unit；
Second self-test signal is used to detect the operation conditions of the data reception lines of the master unit；
The PCBA access detection signal is for detecting whether PCBA to be tested accesses normally；
Whether the route that the PCBA self-test signal is used to detect PCBA to be tested is normal；
Whether the left-hand instruction function that the left-hand detection signal is used to detect PCBA to be tested is normal；
Whether the dextrad instruction function that the dextrad detection signal is used to detect PCBA to be tested is normal；
Whether the two-way instruction function that the two-way detection signal is used to detect PCBA to be tested is normal.
The invention has the benefit that
The method of inspection and device of the invention sends detection signal to PCBA to be tested through the processing unit, and verifies anti-
Whether feedback signal correctly can be completed the Function detection of PCBA, can be to avoid various test keys are triggered manually, and operating method is simple
It is single, testing efficiency is improved, and advantageously reduce the erroneous judgement probability of test result.
Detailed description of the invention
Fig. 1 show the functional block diagram of the PCBA verifying attachment of the emergency luminaire of the embodiment of the present invention；
Fig. 2 show analysis block Fig. 1 of the self-test step of the embodiment of the present invention；
Fig. 3 show analysis block Fig. 2 of the self-test step of the embodiment of the present invention；
Fig. 4 show the analysis block diagram of the access detecting step of the PCBA of the embodiment of the present invention；
Fig. 5 show the analysis block diagram of the self-test step of the PCBA of the embodiment of the present invention；
Fig. 6 show the analysis block diagram of the direction instruction checking procedure of the PCBA of the embodiment of the present invention.
Specific embodiment
The above description is only an overview of the technical scheme of the present invention, in order to better understand the technical means of the present invention,
And it can be implemented in accordance with the contents of the specification, and in order to allow above and other objects, features and advantages of the invention can
It is clearer and more comprehensible, it is special below to lift preferred embodiment, and cooperate attached drawing, detailed description are as follows.
Please refer to Fig. 1, a kind of PCBA method of inspection of emergency luminaire disclosed in the present embodiment, applied to emergency luminaire
PCBA verifying attachment, the verifying attachment include processing unit 1 and the master unit connecting respectively with processing unit 12 and from unit
3, master unit 2 is connect with from unit 3 and PCBA to be tested respectively by two-wire bus, and the two-wire bus of the present embodiment is adopted
With Mbus bus (Meter bus, meter bus), master unit 2 is equivalent to the main equipment connecting with Mbus bus, from 3 phase of unit
When in the slave equipment being connect with Mbus bus.
The method of inspection the following steps are included:
The self-test step of verifying attachment: after verifying attachment powers on, processing unit 1 detects the operation conditions of master unit 2, can be with
The fault condition for excluding verifying attachment itself, avoids the functional test of PCBA to be tested from judging by accident, improves the accuracy rate of detection；
The access detecting step of PCBA: after PCBA 4 to be tested is accessed, processing unit 1 detects PCBA 4 to be tested and examines
The connection state of device, it is ensured that the access of PCBA 4 to be tested is normal, and the functional test of PCBA 4 to be tested is avoided to judge by accident,
Improve the accuracy rate of detection；
The self-test step of PCBA: processing unit 1 sends PCBA self-test signal to PCBA 4 to be tested by master unit 2, and
Whether correct verify the PCBA self-test signal returned, if so, the route of PCBA to be tested 4 is normal, otherwise, PCBA to be tested
4 line anomalies；
The direction instruction checking procedure of PCBA: processing unit 1 is sent to PCBA 4 to be tested by master unit 2 and examines letter
Number, and whether the inspection signal for verifying return is correct, if so, direction instruction function is normal, otherwise, direction instruction function is different
Often.
The method of inspection of the present embodiment can carry out follow-on test to the various functions of PCBA to be tested, avoid triggering manually
Various test keys improve testing efficiency, and test result is judged by processing unit 1, avoids artificially judging by accident, improve
The accuracy rate of test.
Referring to figure 2., verifying attachment self-test step specifically includes the following steps:
A1. processing unit 1 sends the first self-test signal to master unit 2, and the first self-test signal can be NULL signal；
A2. master unit 2 is modulated the first self-test signal, and modulated first self-test signal is sent to from unit
3；
A3. it is demodulated from unit 3 by modulated first self-test signal, and the first self-test signal after demodulation is sent
To processing unit 1；
A4. the first self-test signal after 1 pair of processing unit demodulation verifies, if check results are correct, master unit 2
Data transmission line road TX normal operation, otherwise, the data transmission line road TX of master unit 2 are operating abnormally.
Referring to figure 3., the self-test step of verifying attachment is further comprising the steps of:
A5. processing unit 1 is given from unit 3 and sends the second self-test signal；
A6. second self-test signal is modulated from unit 3, and modulated second self-test signal is sent to master unit
2；
A7. master unit 2 demodulates modulated second self-test signal, and the second self-test signal after demodulation is sent
To processing unit 1；
A8. the second self-test signal after 1 pair of processing unit demodulation verifies, if check results are correct, master unit 2
Data reception lines RX normal operation, otherwise, the data transmission line road RX of master unit 2 are operating abnormally.
Wherein, the first self-test signal and the second self-test signal can be the reset signal of processing unit 1.
Referring to figure 4., PCBA access detecting step specifically includes the following steps:
B1. processor sends access detection signal to master unit 2；
B2. master unit 2 will access detection signal be modulated, and by modulated access detect signal be sent to it is to be tested
PCBA 4；
B3. after PCBA 4 to be tested receives modulated access detection signal, access detection signal is returned into master
Unit 2；
B4. master unit 2 will be demodulated from the access of PCBA 4 to be tested detection signal, and the access after demodulation is examined
It surveys signal and is sent to processing unit 1；
B5. the access detection signal after 1 pair of processing unit demodulation verifies, to be tested if check results are correct
PCBA 4 is accessed normally, and otherwise, PCBA 4 to be tested accesses exception.
The direction checking procedure of PCBA includes that left-hand instruction checking procedure, dextrad instruction checking procedure and two-way instruction are examined
Step.
Referring to figure 5., PCBA self-test step specifically includes the following steps:
C1. processing unit 1 sends PCBA self-test signal to master unit 2；
C2. PCBA self-test signal is modulated by master unit 2, and modulated PCBA self-test signal is sent to be tested
PCBA4；
C3. PCBA 4 to be tested receives modulated PCBA self-test signal, and the PCBA self-test signal is returned to main list
Member 2；
C4. master unit 2 demodulates the PCBA self-test signal from PCBA 4 to be tested, and certainly by the PCBA after demodulation
Inspection signal is sent to processing unit 1；
C5. the PCBA self-test signal after 1 pair of processing unit demodulation verifies, to be tested if check results are correct
The route of PCBA 4 is normal, otherwise, the line anomalies of PCBA 4 to be tested.
Please refer to Fig. 6, the direction checking procedure of PCBA specifically includes the following steps:
D1. 1 sending direction of processing unit detects signal to master unit 2；
D2. angle detecting signal is modulated by master unit 2, and modulated angle detecting signal is sent to be tested
PCBA 4；
D3. PCBA 4 to be tested receives modulated dextrad detection signal, and direction detection signal is returned to main list
Member 2；
D4. master unit 2 demodulates the angle detecting signal from PCBA 4 to be tested, and the direction after demodulation is examined
It surveys signal and is sent to processing unit 1；
D5. the angle detecting signal after 1 pair of processing unit demodulation verifies, to be tested if check results are correct
The direction instruction function of PCBA 4 is normal, otherwise, the direction instruction dysfunction of PCBA 4 to be tested.
Wherein, angle detecting signal includes left-hand detection signal, dextrad detection signal and two-way detection signal.
Please refer to Fig. 1, the present embodiment also provides a kind of PCBA verifying attachment of emergency luminaire, including power supply unit 6, from list
Member 3 and processing unit 1, master unit 2 and the display unit 5 being connect respectively with power supply unit 6；Processing unit 1 respectively with main list
Member 2 is connected from unit 3 and display unit 5, and processing unit 1 can be using chip or circuit with logic processing capability, processing
Unit 1 is for sending detection signal, reception and verification feedback signal；Master unit 2 by two-wire bus with from unit 3 and to be measured
The connection of PCBA 4 is tried, two-wire bus uses Mbus bus, and Mbus bus is regardless of positive-negative polarity, and easy to operate, master unit 2 is used for
It carries out the modulation or demodulation of signal, and to power from unit 3 and PCBA to be tested 4, reduces additional power supply line, it can be with
Reduce maintenance cost；From unit 3 for detecting to master unit 2, the failure of master unit 2 can be excluded to PCBA 4 to be tested
Test influence, improve the accuracy of test, display unit 5 can use LED light or display screen.
Detect signal include the first self-test signal, the second self-test signal, PCBA access detection signal, PCBA self-test signal,
Left-hand detects signal, dextrad detection signal and two-way detection signal；The data that first self-test signal is used to detect master unit 2 are sent
Route TX operation conditions；Second self-test signal is used to detect the operation conditions of the data reception lines RX of master unit 2；PCBA access
Detection signal is for detecting whether PCBA 4 to be tested accesses normally；PCBA self-test signal is used to detect the line of PCBA 4 to be tested
Whether road is normal；Whether the left-hand instruction function that left-hand detection signal is used to detect PCBA 4 to be tested is normal；Dextrad detection letter
Number for detect PCBA 4 to be tested dextrad instruction function it is whether normal；Two-way detection signal is for detecting PCBA 4 to be tested
Two-way instruction function it is whether normal.
The verifying attachment of the present embodiment can carry out follow-on test to the various functions of PCBA board to be tested, avoid artificially touching
It sends out test key various, improves testing efficiency, and test result is judged by processing unit, reduce erroneous judgement probability, pass through
Display unit can intuitively learn test result, simple to operate.
The above, only presently preferred embodiments of the present invention, the invention is not limited to above embodiment, as long as
It reaches technical effect of the invention with identical means, all should belong to protection scope of the present invention.In protection model of the invention
Its technical solution and/or embodiment can have a variety of different modifications and variations in enclosing.
Claims (9)
1. a kind of PCBA method of inspection of emergency luminaire, it is characterised in that: applied to the PCBA verifying attachment of emergency luminaire, the inspection
Experiment device includes processing unit (1) and the master unit (2) connecting respectively with the processing unit (1) and from unit (3), described
Master unit (2) is connect with described from unit (3) and PCBA to be tested respectively by two-wire bus, and the method for inspection includes
Following steps:
The self-test step of verifying attachment: after the verifying attachment powers on, the processing unit (1) detects the master unit (2)
Operation conditions；
The access detecting step of PCBA: after PCBA (4) access to be tested, the processing unit (1) detects the PCBA to be tested
(4) with the connection state of the verifying attachment；
The self-test step of PCBA: the processing unit (1) is sent by the master unit (2) to the PCBA (4) to be tested
PCBA self-test signal, and whether the PCBA self-test signal for verifying return is correct, if so, the route of the PCBA to be tested (4)
Normally, otherwise, the line anomalies of the PCBA to be tested (4)；
The direction instruction checking procedure of PCBA: the processing unit (1) gives the PCBA to be tested by the master unit (2)
(4) it sends and examines signal, and whether the inspection signal for verifying return is correct, if so, direction instruction function is normal, otherwise, side
To instruction dysfunction.
2. the PCBA method of inspection of emergency luminaire as described in claim 1, which is characterized in that the self-test of the verifying attachment walks
It is rapid specifically includes the following steps:
A1. the processing unit (1) sends the first self-test signal to the master unit (2)；
A2. the master unit (2) is modulated first self-test signal, and modulated first self-test signal is sent to
It is described from unit (3)；
A3. described to be demodulated from unit (3) by modulated first self-test signal, and the first self-test signal after demodulation is sent out
Give the processing unit (1)；
A4. the processing unit (1) verifies the first self-test signal after demodulation, if check results are correct, the master
The data transmission line road normal operation of unit (2), otherwise, the data transmission line road of the master unit (2) are operating abnormally.
3. the PCBA method of inspection of emergency luminaire as claimed in claim 2, which is characterized in that the self-test of the verifying attachment walks
It is rapid further comprising the steps of:
A5. the processing unit (1) sends the second self-test signal from unit (3) to described；
A6. described that second self-test signal is modulated from unit (3), and modulated second self-test signal is sent to
The master unit (2)；
A7. the master unit (2) demodulates modulated second self-test signal, and the second self-test signal after demodulation is sent out
Give the processing unit (1)；
A8. the processing unit (1) verifies the second self-test signal after demodulation, if check results are correct, the master
The data reception lines normal operation of unit (2), otherwise, the data transmission line road of the master unit (2) are operating abnormally.
4. the PCBA method of inspection of emergency luminaire as described in claim 1, which is characterized in that the access of the PCBA detects step
It is rapid specifically includes the following steps:
B1. the processor sends access detection signal to the master unit (2)；
B2. access detection signal is modulated by the master unit (2), and modulated access detection signal is sent to
The PCBA to be tested (4)；
B3. after the PCBA to be tested (4) receives modulated access detection signal, access detection signal is returned into institute
State master unit (2)；
B4. the master unit (2) demodulates the access detection signal from the PCBA (4) to be tested, and will be after demodulation
Access detection signal be sent to the processing unit (1)；
B5. the processing unit (1) verifies the access detection signal after demodulation, if check results are correct, it is described to
It is normal to test PCBA (4) access, otherwise, PCBA (4) access to be tested is abnormal.
5. the PCBA method of inspection of emergency luminaire as described in claim 1, which is characterized in that the self-test step of the PCBA has
Body the following steps are included:
C1. the processing unit (1) sends PCBA self-test signal and gives the master unit (2)；
C2. the PCBA self-test signal is modulated by the master unit (2), and modulated PCBA self-test signal is sent to
The PCBA to be tested (4)；
C3. the PCBA to be tested (4) receives modulated PCBA self-test signal, and the PCBA self-test signal is returned to described
Master unit (2)；
C4. the master unit (2) demodulates the PCBA self-test signal from the PCBA (4) to be tested, and will be after demodulation
PCBA self-test signal be sent to the processing unit (1)；
C5. the processing unit (1) verifies the PCBA self-test signal after demodulation, if check results are correct, it is described to
The route for testing PCBA (4) is normal, otherwise, the line anomalies of the PCBA (4) to be tested.
6. the PCBA method of inspection of emergency luminaire as described in claim 1, which is characterized in that examine step in the direction of the PCBA
It is rapid specifically includes the following steps:
D1. processing unit (1) the sending direction detection signal gives the master unit (2)；
D2. the angle detecting signal is modulated by the master unit (2), and modulated angle detecting signal is sent to
The PCBA to be tested (4)；
D3. the PCBA to be tested (4) receives modulated dextrad and detects signal, and direction detection signal is returned to described
Master unit (2)；
D4. the master unit (2) demodulates the angle detecting signal from the PCBA (4) to be tested, and will be after demodulation
Angle detecting signal be sent to the processing unit (1)；
D5. the processing unit (1) verifies the angle detecting signal after demodulation, if check results are correct, it is described to
The direction instruction function of testing PCBA (4) is normal, otherwise, the direction instruction dysfunction of the PCBA (4) to be tested.
7. the PCBA method of inspection of emergency luminaire as claimed in claim 6, it is characterised in that: the angle detecting signal includes
Left-hand detects signal, dextrad detection signal and two-way detection signal.
8. a kind of PCBA verifying attachment of emergency luminaire, it is characterised in that: including power supply unit (6), from unit (3) and respectively
Processing unit (1), master unit (2) and the display unit (5) being connect with said supply unit (6)；
The processing unit (1) connect with the master unit (2), from unit (3) and display unit (5) respectively, and the processing is single
First (1) is for sending detection signal, reception and verification feedback signal；
The master unit (2) is connect with described from unit (3) and PCBA to be tested (4) by two-wire bus, and for carrying out
The modulation or demodulation of signal, and power to be described from unit (3) and the PCBA to be tested (4)；
It is described to be used to detect the master unit (2) from unit (3).
9. the PCBA verifying attachment of emergency luminaire as claimed in claim 8, it is characterised in that: the detection signal includes first
Self-test signal, the second self-test signal, PCBA access detection signal, PCBA self-test signal, left-hand detection signal, dextrad detect signal
With two-way detection signal；
First self-test signal is used to detect the data transmission line road operation conditions of the master unit (2)；
Second self-test signal is used to detect the operation conditions of the data reception lines of the master unit (2)；
The PCBA access detection signal is for detecting whether PCBA to be tested (4) accesses normally；
Whether the route that the PCBA self-test signal is used to detect PCBA to be tested (4) is normal；
Whether the left-hand instruction function that the left-hand detection signal is used to detect PCBA to be tested (4) is normal；
Whether the dextrad instruction function that the dextrad detection signal is used to detect PCBA to be tested (4) is normal；
Whether the two-way instruction function that the two-way detection signal is used to detect PCBA to be tested (4) is normal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
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