CN108062268A - A kind of automatic test has method, test fixture and the device of RS232RS485 general purpose interfaces - Google Patents
A kind of automatic test has method, test fixture and the device of RS232RS485 general purpose interfaces Download PDFInfo
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- CN108062268A CN108062268A CN201711317780.2A CN201711317780A CN108062268A CN 108062268 A CN108062268 A CN 108062268A CN 201711317780 A CN201711317780 A CN 201711317780A CN 108062268 A CN108062268 A CN 108062268A
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- test
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- ancillary equipment
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- triode
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F11/00—Error detection; Error correction; Monitoring
- G06F11/22—Detection or location of defective computer hardware by testing during standby operation or during idle time, e.g. start-up testing
- G06F11/26—Functional testing
- G06F11/267—Reconfiguring circuits for testing, e.g. LSSD, partitioning
Abstract
The present invention relates to the communications fields, more particularly to a kind of automatic test has the method for RS232/RS485 general purpose interfaces, the method is related to Devices to test and ancillary equipment with RS232/RS485 general-purpose interfaces, further includes to connect test fixture and the test fixture of data interaction when ancillary equipment is tested；By testing the data interaction of Devices to test and ancillary equipment under RS485 patterns, RS232 patterns, test whether the data transmit-receive function under the RS485 patterns of Devices to test, the data transmit-receive function under RS232 patterns, RTS, CTS function under RS232 patterns are effective, judge whether the RS232/RS485 general-purpose interfaces function of Devices to test is abnormal.It need to only be safeguarded in controller side.In addition, the present invention also provides a kind of test fixture and devices.
Description
Technical field
The present invention relates to the communications fields more particularly to a kind of automatic test to have RS232/RS485 general purpose interfaces
Method, test fixture and device.
Background technology
When the equipment to carrying RS232 and RS485 general-purpose interface types carries out the Function detection on hardware interface, often
Need the progress manual configuration after a kind of interface type is tested that the interface type of equipment is switched to another interface to be measured
Type.Such way seems extremely inconvenient when whether test hardware interface function is normal, and in the number of devices for needing to test
The production efficiency of producing line can be substantially reduced when measuring more.
In the prior art, not it is proposed that for the equipment detection side containing RS232 and RS485 general-purpose interface types
Method.Existing file is pointed out that mostly is detected the interface of RS232 or RS485, such as Chinese patent application
CN201310211216.8 discloses a kind of serial ports test device, by using including RS232 serial port protocols, RS422 is supported to go here and there
The serial ports test device of the level switch module of mouth agreement or RS485 serial port protocols, can be compatible with different types of interface chip
With different serial equipments, and RS422 serial port protocols are being supported or whens RS485 serial port protocols has reached and realizes big baud over long distances
The purpose of rate communication.Although it can test the serial ports of RS232,422,485 accordingly, can not be for RS232/
485 general-purpose interfaces are used for quickly detecting.
The content of the invention
The object of the present invention is to provide a kind of method that automatic test has RS232/RS485 general purpose interfaces, this surveys
Method for testing becomes convenient and efficient when carrying out hardware interface functional verification to the equipment with RS232/RS485 general-purpose interfaces.It is whole
A test process is automated, and without being configured to interface type in test process, can be improved and be authenticated to general-purpose interface
Function it is whether abnormal, substantially increase efficiency of the equipment in production test；Meanwhile the invention also discloses a kind of test clips
Tool and device.
The concrete scheme of the present invention is as follows：A kind of automatic test has the method for RS232/RS485 general purpose interfaces, institute
The method stated is related to Devices to test and ancillary equipment with RS232/RS485 general-purpose interfaces, further includes to connect test clip
The test fixture of data interaction when tool and ancillary equipment are tested；By testing Devices to test and ancillary equipment in RS485
Data transmit-receive function, RS232 patterns under the RS485 patterns of Devices to test are tested in data interaction under pattern, RS232 patterns
Under data transmit-receive function, RTS, CTS function under RS232 patterns it is whether effective, judge that the RS232/RS485 of Devices to test leads to
It is whether abnormal with interface function.
In above-mentioned automatic method of the test with RS232/RS485 general purpose interfaces, the Devices to test exists
The whether effective method of RTS, CTS function under RS232 patterns is specially：
Step 21：Set the RTS signals of Devices to test effective for low level, trigger request is sent；
Step 22：Whether the cts signal of test fixture detection ancillary equipment is that low level is effective, if so, triggering allows
It sends；If otherwise setting the cts signal of ancillary equipment effective for low level, triggering allows to send；
Step 23：The RTS work(at then Devices to test end when Devices to test detects that the cts signal of ancillary equipment is low level
It can be normal；
Step 24：Set the cts signal of Devices to test effective for low level；If the cts signal that ancillary equipment receives is
Low level, then the CTS functions at Devices to test end are normal.
In above-mentioned automatic method of the test with RS232/RS485 general purpose interfaces, the RS485 moulds of Devices to test
The method of data transmit-receive function under formula is specially：
Step 11：Devices to test by specified character string, is sent to ancillary equipment by test fixture；
Step 12：The character string received is sent to Devices to test by ancillary equipment in the form of inverted order by test fixture；
Step 13：The character string of Devices to test inverted order is compared with the character string sent in step 11, judges that Devices to test exists
Whether the data transmit-receive function under RS485 patterns is normal.
In above-mentioned automatic method of the test with RS232/RS485 general purpose interfaces, the RS232 moulds of Devices to test
The method of data transmit-receive function under formula is specially：
Step 31：Devices to test by specified character string, is sent to ancillary equipment by test fixture；
Step 32：The character string received is sent to Devices to test by ancillary equipment in the form of inverted order by test fixture；
Step 33：The character string of Devices to test inverted order is compared with the character string sent in step 31, judges that Devices to test exists
Whether the data transmit-receive function under RS232 patterns is normal.
Meanwhile realize method testing fixture as described above the invention also discloses a kind of, which is characterized in that including with
In the Devices to test interface, the auxiliary device interface for being connected with ancillary equipment that are connected with Devices to test, the Devices to test
First cts signal port of interface is connected by first resistor with the base stage of the first triode and the base stage of the second triode respectively
It connecing, first transistor emitter is connected with coil one end of the first relay and collector is connected with ground wire, and the one or three
The emitter and collector of pole pipe is connected by the first diode, the anode of first diode and the current collection of the first triode
Pole connects；Second transistor emitter is connected with coil one end of the second relay and collector is connected with ground wire, the
The emitter and collector of two triodes is connected by the second diode, the anode of second diode and the second triode
Collector connects；First relay coil is connected with the opposite other end of the first transistor emitter connecting pin with working power,
Second relay is connected with the opposite other end of the emitter connecting pin of the second triode with working power, and the Devices to test connects
Mouthful the first data sending port by the first relay respectively with the second data sending port of auxiliary device interface and second
Data receiver port connects, the first data receiver of the Devices to test interface by the second relay respectively with ancillary equipment
Second data sending port of interface is connected with the second data receiver port.
First relay and the second relay are single-pole double-throw relay.
The base stage of first triode is connected by the first capacitance with its collector and its base stage is also by the second electricity
Resistance is connected with working power, and the base stage of second triode is connected by the second capacitance with its collector and its base stage is also logical
It crosses 3rd resistor to be connected with working power, the second resistance and 3rd resistor are 10K Ω, first capacitance and the second electricity
Appearance is 0.1uF.
One end that first relay coil is connected with working power passes through the 3rd capacitance and the 4th capacitance and ground respectively
Line connects, and one end that second relay coil is connected with working power is respectively by the 5th capacitance and the 6th capacitance and ground wire
Connection, the 3rd capacitance and the 5th capacitance are 0.1uF, and the 4th capacitance and the 6th capacitance are 10uF.
In addition, the invention also discloses a kind of for testing the device with RS232/RS485 general purpose interfaces automatically,
Including Devices to test, ancillary equipment and test fixture, wherein Devices to test, ancillary equipment is respectively provided with that RS232/RS485 is general to be connect
Mouthful；
The structure of the test fixture is as implied above.
Compared with prior art, the present invention its advantage is：
The test method of the present invention is carrying out hardware interface functional verification to the equipment with RS232/RS485 general-purpose interfaces
When become convenient and efficient.Entire test process is automated, can be complete without being configured to interface type in test process
Whether the kind function of authenticating to general-purpose interface is abnormal, substantially increases efficiency of the equipment in production test.
Description of the drawings
Fig. 1 is the flow chart of the embodiment of the present invention 1；
Fig. 2 is the structure diagram of the embodiment of the present invention 2.
Specific embodiment
With reference to embodiment, the invention will be further described, but does not form any limitation of the invention, any
In the modification for the limited number of time that scope of the invention as claimed is made, still in scope of the presently claimed invention.
Embodiment 1
As Figure 1-Figure 2, a kind of automatic test has the method for RS232/RS485 general purpose interfaces, and this method relates to
And Devices to test and ancillary equipment with RS232/RS485 general-purpose interfaces, it further includes to connect test fixture and auxiliary is set
For the test fixture of data interaction when being tested；By testing Devices to test and ancillary equipment in RS485 patterns, RS232
The data transmit-receive function under the RS485 patterns of Devices to test is tested in data interaction under pattern, the data under RS232 patterns are received
Whether RTS, CTS function sent out under function, RS232 patterns are effective, judge the RS232/RS485 general-purpose interface functions of Devices to test
It is whether abnormal.
In the present embodiment, RTS is the input terminal of equipment, and function is commonly used in MCU notification modules, and whether MCU prepares
Good, whether module can send information to MCU, and the significant level of RTS is low.CTS is the output terminal of equipment, and function is commonly used in
Module notifies MCU, and whether module is ready to, and whether MCU can send information to module, and the significant level of CTS is low.
The whether effective method of RTS, CTS function of the Devices to test under RS232 patterns is specially：
Step 21：Set the RTS signals of Devices to test effective for low level, trigger request is sent；
Step 22：Whether the cts signal of test fixture detection ancillary equipment is that low level is effective, if so, triggering allows
It sends；If otherwise setting the cts signal of ancillary equipment effective for low level, triggering allows to send；
Step 23：The RTS work(at then Devices to test end when Devices to test detects that the cts signal of ancillary equipment is low level
It can be normal；
Step 24：Set the cts signal of Devices to test effective for low level；If the cts signal that ancillary equipment receives is
Low level, then the CTS functions at Devices to test end are normal.
The method of data transmit-receive function under the RS485 patterns of Devices to test is specially：
Step 11：Devices to test by specified character string, is sent to ancillary equipment by test fixture；
Step 12：The character string received is sent to Devices to test by ancillary equipment in the form of inverted order by test fixture；
Step 13：The character string of Devices to test inverted order is compared with the character string sent in step 11, judges that Devices to test exists
Whether the data transmit-receive function under RS485 patterns is normal.
The method of data transmit-receive function under the RS232 patterns of Devices to test is specially：
Step 31：Devices to test by specified character string, is sent to ancillary equipment by test fixture；
Step 32：The character string received is sent to Devices to test by ancillary equipment in the form of inverted order by test fixture；
Step 33：The character string of Devices to test inverted order is compared with the character string sent in step 31, judges that Devices to test exists
Whether the data transmit-receive function under RS232 patterns is normal.
The side of becoming during hardware interface functional verification is carried out to the equipment with RS232/RS485 general-purpose interfaces by this method
Just it is quick.So that entire test process is automated progress, interface type need not be configured in test process, it can be complete
Whether the kind function of authenticating to general-purpose interface is abnormal, substantially increases efficiency of the equipment in production test.
Embodiment two
As shown in Fig. 2, the present invention also provides a kind of test fixture, including the Devices to test for being used to be connected with Devices to test
Interface P2, the auxiliary device interface P1 for being connected with ancillary equipment, the first cts signal port DUT of Devices to test interface P2
CTS is connected by base stages of the first resistor R1 respectively with the base stage of the first triode Q1 and the second triode Q2, the first triode
Q1 emitters are connected with coil one end of the first relay K1 and collector is connected with ground wire, the emitter of the first triode Q1
It is connected with collector by the first diode D1, the anode of the first diode D1 is connected with the collector of the first triode Q1；The
Two triode Q2 emitters are connected with coil one end of the second relay K2 and collector is connected with ground wire, the second triode Q2
Emitter and collector by the second diode D2 connections, the collector of the anode of the second diode D2 and the second triode Q2
Connection；First relay K1 coils are connected with the opposite other end of the first triode Q1 emitters connecting pin with working power VCC,
Second relay K2 is connected with the opposite other end of the emitter connecting pin of the second triode Q2 with working power VCC, to be measured to set
The first data sending port DUT ATX of standby interface P2 are counted by the first relay K1 with the second of auxiliary device interface P1 respectively
According to sending port AUNT ATX and the second data receiver port AUNT BRX connections, the first data receiver of Devices to test interface P2
DUT BRX is held to pass through the second relay K2 the second data sending port AUNT ATX and second with auxiliary device interface P1 respectively
Data receiver port AUNT BRX connections.First relay K1 and the second relay K2 is single-pole double-throw relay.
In the present embodiment, first resistor R1 is 10K Ω, and working power VCC is accessed by power interface P3.First relay
Device K1 and the second relay K2 is single-pole double-throw relay, so as to pass through the control to the first relay K1 and the second relay K2
System, so as to which the first data sending port DUT ATX be controlled still to be connect with the second data sending port AUNT ATX with the second data
Receiving end mouth AUNT BRX are attached, the first data receiver DUT BRX and the second data sending port AUNT ATX still with
Second data receiver port AUNT BRX connections；Wherein, the first data sending port DUT ATX and the second data sending port
During AUNT ATX connections, the first data receiver DUT BRX are connected with the second data receiver port AUNT BRX, the first data hair
When sending end mouth DUT ATX are connected with the second data receiver port AUNT BRX, the first data receiver DUT BRX and the second data
Sending port AUNT ATX connections.So that the progress that test automation is orderly.First cts signal port DUT CTS pass through
Export high level or the break-make of low level control the first triode Q1 and the second triode Q2, so as to control the first relay K1 and
The break-make work of second relay K2.
So as to cleverly realize by control the cts signal of Devices to test allow for Devices to test and ancillary equipment it
Between automate the detection work of orderly data transmit-receive.
The base stage of first triode Q1 is connected by the first capacitance C1 with its collector and its base stage is also by the second electricity
Resistance R2 is connected with working power VCC, and the base stage of the second triode Q2 is connected by the second capacitance C2 with its collector and its base
Pole is also connected by 3rd resistor R3 with working power VCC, and second resistance R2 and 3rd resistor R3 are 10K Ω, the first capacitance
C1 and the second capacitance C2 is 0.1uF.One end that first relay K1 coils are connected with working power VCC passes through the 3rd electricity respectively
Hold C3 and the 4th capacitance C4 to be connected with ground wire, one end that the second relay K2 coils are connected with working power VCC is respectively by the
Five capacitance C5 and the 6th capacitance C6 are connected with ground wire, and the 3rd capacitance C3 and the 5th capacitance C5 are 0.1uF, the 4th capacitance C4 and
Six capacitance C6 are 10uF.
In the present embodiment, by that must be set to a resistance and capacitance, this fixture is enabled to obtain circuit stability, is met
The needs of test reaction speed and stability.
Embodiment three
The present invention also provides a kind of for testing the device with RS232/RS485 general purpose interfaces automatically, including
Devices to test, ancillary equipment and test fixture, wherein Devices to test, ancillary equipment are respectively provided with RS232/RS485 general-purpose interfaces；It should
The structure of test fixture is as described in implementing two.
It the above is only the preferred embodiment of the present invention, it should be pointed out that for those skilled in the art, do not taking off
On the premise of from structure of the present invention, several modifications and improvements can also be made, these all do not interfere with the effect that the present invention is implemented
And practical applicability.
Claims (9)
1. a kind of method that automatic test has RS232/RS485 general purpose interfaces, the method are related to RS232/
The Devices to test and ancillary equipment of RS485 general-purpose interfaces, which is characterized in that further include to connect test fixture and ancillary equipment
The test fixture of data interaction when being tested；By testing Devices to test and ancillary equipment in RS485 patterns, RS232 moulds
The data transmit-receive function under the RS485 patterns of Devices to test, the data transmit-receive under RS232 patterns are tested in data interaction under formula
Whether RTS, CTS function under function, RS232 patterns are effective, judge the RS232/RS485 general-purpose interface functions of Devices to test and are
No exception.
2. the method that automatic test according to claim 1 has RS232/RS485 general purpose interfaces, feature exist
In the whether effective method of RTS, CTS function of the Devices to test under RS232 patterns is specially：
Step 21：Set the RTS signals of Devices to test effective for low level, trigger request is sent；
Step 22：Whether the cts signal of test fixture detection ancillary equipment is that low level is effective, if so, triggering allows to send；
If otherwise setting the cts signal of ancillary equipment effective for low level, triggering allows to send；
Step 23：When Devices to test detect ancillary equipment cts signal be low level when then Devices to test end RTS functions just
Often；
Step 24：Set the cts signal of Devices to test effective for low level；If the cts signal that ancillary equipment receives is low electricity
Flat, then the CTS functions at Devices to test end are normal.
3. automatic test described in claim 1 according to claim 1 has RS232/RS485 general purpose interfaces
Method, which is characterized in that the method for the data transmit-receive function under the RS485 patterns of Devices to test is specially：
Step 11：Devices to test by specified character string, is sent to ancillary equipment by test fixture；
Step 12：The character string received is sent to Devices to test by ancillary equipment in the form of inverted order by test fixture；
Step 13：The character string of Devices to test inverted order is compared with the character string sent in step 11, judges Devices to test in RS485
Whether the data transmit-receive function under pattern is normal.
4. the method that automatic test according to claim 1 has RS232/RS485 general purpose interfaces, feature exist
In the method for the data transmit-receive function under the RS232 patterns of Devices to test is specially：
Step 31：Devices to test by specified character string, is sent to ancillary equipment by test fixture；
Step 32：The character string received is sent to Devices to test by ancillary equipment in the form of inverted order by test fixture；
Step 33：The character string of Devices to test inverted order is compared with the character string sent in step 31, judges Devices to test in RS232
Whether the data transmit-receive function under pattern is normal.
5. a kind of method testing fixture realized as described in claim 1-4 is any, which is characterized in that including be used for it is to be measured
Devices to test interface (P2), the auxiliary device interface (P1) for being connected with ancillary equipment of equipment connection, the Devices to test
The first cts signal port (DUT CTS) of interface (P2) passes through first resistor (R1) base stage with the first triode (Q1) respectively
It is connected with the base stage of the second triode (Q2), coil one end of the first triode (Q1) emitter and the first relay (K1)
It connects and collector is connected with ground wire, the emitter and collector of the first triode (Q1) is connected by the first diode (D1)
It connects, the anode of first diode (D1) is connected with the collector of the first triode (Q1)；Second triode (Q2) hair
Emitter-base bandgap grading is connected with coil one end of the second relay (K2) and collector is connected with ground wire, the emitter of the second triode (Q2)
It is connected with collector by the second diode (D2), the anode of second diode (D2) and the current collection of the second triode (Q2)
Pole connects；First relay (K1) coil and the opposite other end and working power of the first triode (Q1) emitter connecting pin
(VCC) connect, the second relay (K2) and the opposite other end and working power of the emitter connecting pin of the second triode (Q2)
(VCC) connect, the first data sending port (DUT ATX) of the Devices to test interface (P2) passes through the first relay (K1) point
Not with the second data sending port of auxiliary device interface (P1) (AUNT ATX) and the second data receiver port (AUNT BRX)
Connection, the first data receiver (DUT BRX) of the Devices to test interface (P2) by the second relay (K2) respectively with it is auxiliary
Help the second data sending port (AUNT ATX) of equipment interface (P1) and the second data receiver port (AUNT BRX) connection.
6. a kind of test fixture according to claim 5, which is characterized in that first relay (K1) and the second relay
Device (K2) is single-pole double-throw relay.
7. a kind of test fixture according to claim 5, which is characterized in that the base stage of first triode (Q1) passes through
First capacitance (C1) is connected with its collector and its base stage is also connected by second resistance (R2) with working power (VCC), institute
The base stage for stating the second triode (Q2) is connected and its base stage also passes through 3rd resistor by the second capacitance (C2) with its collector
(R3) it is connected with working power (VCC), the second resistance (R2) and 3rd resistor (R3) are 10K Ω, first capacitance
(C1) and the second capacitance (C2) is 0.1uF.
8. a kind of test fixture according to claim 5 or 6, which is characterized in that the first relay (K1) coil with
One end of working power (VCC) connection is connected respectively by the 3rd capacitance (C3) and the 4th capacitance (C4) with ground wire, and described second
One end that relay (K2) coil is connected with working power (VCC) passes through the 5th capacitance (C5) and the 6th capacitance (C6) and ground respectively
Line connects, and the 3rd capacitance (C3) and the 5th capacitance (C5) are 0.1uF, the 4th capacitance (C4) and the 6th capacitance (C6)
It is 10uF.
It is 9. a kind of for device of the test with RS232/RS485 general purpose interfaces automatically, it is characterised in that：It is set including to be measured
Standby, ancillary equipment and test fixture, wherein Devices to test, ancillary equipment are respectively provided with RS232/RS485 general-purpose interfaces；
The structure of the test fixture is as claimed in claim 5.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711317780.2A CN108062268B (en) | 2017-12-08 | 2017-12-08 | Method, test fixture and device for automatically testing equipment with RS232RS485 universal interface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201711317780.2A CN108062268B (en) | 2017-12-08 | 2017-12-08 | Method, test fixture and device for automatically testing equipment with RS232RS485 universal interface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108062268A true CN108062268A (en) | 2018-05-22 |
| CN108062268B CN108062268B (en) | 2021-01-26 |
Family
ID=62138310
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201711317780.2A Active CN108062268B (en) | 2017-12-08 | 2017-12-08 | Method, test fixture and device for automatically testing equipment with RS232RS485 universal interface |
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| CN114003455A (en) * | 2021-12-31 | 2022-02-01 | 广州鲁邦通物联网科技股份有限公司 | Serial port automatic test system, interface automatic test method and test platelet |
| CN116126608A (en) * | 2023-01-12 | 2023-05-16 | 北京众谊越泰科技有限公司 | Test fixture system and method for multi-serial port monitoring host |
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| US9215160B2 (en) * | 2012-05-24 | 2015-12-15 | Mitsubishi Electric Corporation | Adjustment test apparatus for AI module |
| CN103888308A (en) * | 2012-12-20 | 2014-06-25 | 研祥智能科技股份有限公司 | Method, system and device for serial port tests |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN114003455A (en) * | 2021-12-31 | 2022-02-01 | 广州鲁邦通物联网科技股份有限公司 | Serial port automatic test system, interface automatic test method and test platelet |
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| CN116126608A (en) * | 2023-01-12 | 2023-05-16 | 北京众谊越泰科技有限公司 | Test fixture system and method for multi-serial port monitoring host |
| CN116126608B (en) * | 2023-01-12 | 2024-01-26 | 北京众谊越泰科技有限公司 | Test fixture system and method for multi-serial port monitoring host |
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| Publication number | Publication date |
|---|---|
| CN108062268B (en) | 2021-01-26 |
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