CN107607762B - Oscilloscope safety measurement device and method for satellite electrical signal interface test - Google Patents
Oscilloscope safety measurement device and method for satellite electrical signal interface test Download PDFInfo
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- CN107607762B CN107607762B CN201710592229.2A CN201710592229A CN107607762B CN 107607762 B CN107607762 B CN 107607762B CN 201710592229 A CN201710592229 A CN 201710592229A CN 107607762 B CN107607762 B CN 107607762B
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Abstract
The invention discloses an oscilloscope safety measurement device and method for testing a satellite electrical signal interface, wherein the oscilloscope safety measurement device comprises a signal test line, a ground wire test line, a switching cable, a signal switching test platform, an oscilloscope probe, an oscilloscope and a signal recording and reproducing terminal; the signal test wire and the ground wire test wire respectively complete the reliable connection of a probe and a ground wire clamp on the oscilloscope probe and the signal transfer test platform; the switching cable is used for adapting an electric connector between an electric connector where an electric signal to be tested of the satellite is positioned and the signal switching test platform, and the signal switching test platform switches a signal contact to be tested into a single jack form to complete interconnection with a signal test line and a ground wire test line; the oscilloscope probe finishes the signal conditioning of the tested satellite electric signal and the connection between the signal test wire and the ground wire test wire and the oscilloscope, the oscilloscope is used for observing the characteristics and the details of the tested satellite signal, and the signal recording and reproducing terminal finishes the recording of the satellite electric signal test data and the panoramic reproduction.
Description
Technical Field
The invention relates to an oscilloscope safety measuring device and method, in particular to an oscilloscope safety measuring device and method for testing a satellite electrical signal interface.
Background
Satellites are an extremely complex electrical system. The cost of the satellite is high, and the correctness of the electrical interface design of the satellite product is the premise for realizing the satellite function. In the test of the satellite electrical signal interface, the characteristics and details of the electrical signal to be tested of the satellite often need to be observed so as to check the design correctness of the satellite electrical interface and locate the specific links of the design defects in time. The security, reliability and test efficiency of the satellite electrical interface measurement device becomes especially important. In order to avoid measuring the waveform of the satellite electrical signal, on-board products and even the whole satellite are damaged due to improper operation, a safety measuring device needs to be designed for testing the satellite electrical signal interface, the device is designed on the principle that the operation is safe, simple and convenient, and the connection is stable and reliable, a test probe does not need to be held by hands or fixed by other devices, and no matter how the test probe swings, the accidental contact of different signals can not be caused, the problem of signal short circuit is avoided, and the safety of satellite testing is ensured.
At present, the following obvious disadvantages mainly exist when testing the satellite electrical signal interface:
firstly, the operation is inconvenient, the testing efficiency is low, namely, a test probe needs to be fixed by hands or other fixing devices, so that inconvenience is brought to testing personnel, and the testing efficiency cannot be mentioned;
secondly, the safety is insufficient, when the oscilloscope probe is used for testing, if no fixing device is easy to slide, the contact pin of the oscilloscope probe is accidentally contacted with other test points or a ground wire clamp of the oscilloscope probe, so that accidental short circuit of signals is caused, the serious consequence that equipment on a to-be-tested satellite is burnt down or even the whole satellite is damaged is caused, and the testing safety is difficult to ensure;
thirdly, the parallel test condition of a plurality of signal cascades is difficult to adapt, when the parallel test of a plurality of signal positive lines or signal negative lines and ground signal cascades is performed, the ground wire clamps of a plurality of test probes need to be connected together, the more ground wire clamps need to be connected, the easier the ground wire clamps are stressed and slide, the more difficult the operation is, the inconvenience is brought to test personnel, and the connection reliability of the test is difficult to ensure; on the other hand, the more the ground wire clamps are, the more the exposed metal conductors are, the more easily the signal accidental short circuit is caused, and the test safety is difficult to guarantee.
And fourthly, the storage of original test data is lacked, and the test data and the process are difficult to reproduce without distortion. At present, most of satellite electrical interface tests adopt a photographing or shooting method to store test waveforms and details, the operation is complex, the storage of original test data is lacked, and the test data and the process are difficult to reproduce without distortion.
Disclosure of Invention
In order to effectively improve the rapidity, the safety and the reliability of the satellite electrical interface test so as to check the design correctness of the satellite electrical interface and locate the specific link of the design defect in time, the invention provides the safety measurement device and the method for the satellite electrical interface test, so that the rapid, safe and reliable connection between the satellite electrical signal to be tested and the test device is realized, the waveform characteristics and the details of the satellite electrical signal to be tested can be graphically displayed, and the normal and abnormal waveforms and the detail pictures of the satellite electrical signal to be tested can be conveniently stored and printed; the device also stores all original test data locally, and can carry out panoramic reproduction on a test scene without distortion.
The invention solves the technical problems through the following technical scheme: the oscilloscope safety measurement device for the satellite electrical signal interface test is characterized by comprising a signal test line, a ground wire test line, a switching cable, a signal switching test platform, an oscilloscope probe, an oscilloscope and a signal recording and reproducing terminal;
the signal test wire is used for completing reliable connection between a probe of the oscilloscope probe and a signal wire jack to be tested switched on the signal switching test platform and performing insulation protection on the oscilloscope probe;
the ground wire test wire is used for reliably connecting a ground wire clamp of the oscilloscope probe with a signal ground wire jack to be tested switched on the signal switching test platform and carrying out insulation protection on the oscilloscope ground wire clamp;
the switching cable is used for switching an electric connector where the satellite electric signal interface is located and an electric connector on the signal switching test platform, and switching the electric signal to be tested of the satellite to a corresponding contact of the electric connector on the signal switching test platform;
the signal switching test platform switches all the electric connector contacts where the satellite electric signals to be tested are located into the banana jacks of the single contacts, so that the satellite electric signals to be tested are conveniently, quickly and reliably connected with the signal test lines and the ground wire test lines respectively;
the oscilloscope probe is used for conditioning signals of the electrical signals to be tested of the satellite and is used for connecting the reliable connection between the signal transfer test platform and the oscilloscope; the conditioning of the oscilloscope probe on the satellite electric signal to be measured comprises the steps of attenuating the satellite electric signal to be measured in proportion, and avoiding overvoltage from damaging the oscilloscope probe and the oscilloscope;
the oscilloscope is used for observing the characteristics and the details of the electrical signal to be measured of the satellite; the oscilloscope is a special oscilloscope with a storage battery for power supply, and during testing, the oscilloscope is not connected with alternating current, so that the problem that the test is inaccurate due to interference caused by the fact that a ground wire of 220V alternating current is connected with a satellite electrical signal to be tested through an oscilloscope probe is avoided;
the signal recording and reproducing terminal can carry out real-time display, recording and post panoramic reproduction on the waveform data of the tested satellite electric signal through the network cable remote control oscilloscope, and comprises the steps of storing and printing normal and abnormal waveforms and detail pictures of the satellite electric signal to be tested in the real-time recording or post panoramic reproduction process, locally storing all test data in the real-time display process and panoramic reproduction of a post test scene.
Preferably, the signal testing line consists of an oscilloscope probe protective cap, a first lead, a first heat-shrinkable sleeve and a red banana-shaped plug; wherein: the oscilloscope probe protective cap is used for being reliably connected with a probe on an oscilloscope signal probe, protecting the probe and having an insulation effect; the first lead is used for connecting the oscilloscope probe protective cap and the red banana-shaped plug and is used as a transmission medium of an electrical signal to be tested of the satellite during testing; welding spots among the first lead, the oscilloscope probe protective cap and the red banana-shaped plug are coated by a first heat-shrinkable sleeve, so that the insulating protection effect is achieved; the red banana-shaped plug is internally provided with a first jack and is suitable for simultaneously cascading and testing a plurality of signals sharing the same signal positive line or negative line; during testing, one end of the signal testing line is connected with a probe of the oscilloscope probe, the other end of the signal testing line is connected with a corresponding signal contact to be tested on the signal transfer testing platform, and the signal line to be tested can be a positive line or a negative line of the signal to be tested.
Preferably, the ground wire test wire consists of a metal soldering lug, a second lead, a second heat-shrinkable sleeve and a black banana-shaped plug with a hole; wherein: the metal soldering lug is used for completing the connection between the ground wire test wire and a ground wire clamp of the oscilloscope probe, and after the connection, the metal soldering lug and the ground wire clamp of the oscilloscope probe cover the second heat-shrinkable sleeve outside the metal soldering lug to play an insulation protection role; the second wire is used for connecting the oscilloscope probe ground wire clamp with the black banana-shaped plug with the hole; during testing, the second lead is used as a transmission medium of an electrical signal to be tested of the satellite, and a welding spot between the second lead and the oscilloscope probe protective cap and between the second lead and the black banana-shaped plug with the hole is coated by a second heat-shrinkable sleeve, so that the insulation protection effect is achieved; the black banana-shaped plug with the hole is internally provided with a second jack which is suitable for simultaneously cascading and parallel testing a plurality of signals sharing one ground wire; during testing, one end of the ground wire test wire is connected with a ground wire clamp of the oscilloscope probe, and the other end of the ground wire test wire is connected with a ground wire contact of a corresponding satellite electric signal to be tested on the signal transfer test platform.
Preferably, the adapter cable is based on the arrangement of the contacts of the electrical connectors at two ends of the adapter cable, and the electrical connectors are in one-to-one correspondence according to the sequence of the contact numbers; when the electric connectors of the electric signal interfaces to be tested of the satellite are different, the electric signals are switched through different switching cables to adapt to the electric connectors on the signal switching test platform, so that the test of the electric signals to be tested of the satellite in various electric connectors of the satellite is achieved.
Preferably, the patch cable is comprised of electrical connectors at both ends and a cable bundle in the middle.
Preferably, the signal transfer test platform transfers all the electric connector contacts on the platform into the banana jacks with single contacts according to the sequence of the contact serial numbers, so that the densely arranged contacts in the electric connector are converted into the banana jacks which are convenient for test operation and reliable in connection, and the satellite electric signals to be tested are conveniently, quickly and reliably connected with the signal test line and the ground wire test line respectively; the electric connector on the signal transfer test platform is based on the electric connector with the most contacts in the electric connector where the satellite electric signals are located, and all the contacts of the electric connector are completely converted into a banana jack form with single contacts.
Preferably, the electrical connector on the signal transfer test platform is welded with the banana jack through a wire, a contact serial number of the banana jack is arranged above each banana jack, the contact serial number is a contact serial number in the electrical connector where the satellite electric signal to be tested is located, and during testing, a signal test wire and a ground wire test wire are only required to be inserted into the banana jack of the corresponding contact of the satellite electric signal to be tested on the signal transfer test platform.
Preferably, the signal recording and reproducing terminal can remotely control the oscilloscope through a network cable, can display the waveform data of the tested satellite electric signal in real time, performs local recording on the original test data, and can reproduce a test scene without distortion after the test of the secondary satellite electric signal interface is finished; the normal or abnormal waveform and detail picture of the electric signal to be detected of the satellite can be stored and printed in the real-time recording or afterward reproduction process.
The invention also provides an oscilloscope safety measurement method for testing the satellite electrical signal interface, which is characterized by comprising the following steps: when a satellite electric signal interface is tested, the electric connector where the satellite electric signal to be tested is located is connected to the electric connector on the signal transfer test platform through a transfer cable, all signal contacts on the signal transfer test platform are converted into banana jacks of single contacts, and the banana jacks correspond to the signal contacts in the satellite electric signal to be tested one by one; then, respectively connecting a signal line of the satellite electric signal to be tested on the signal transfer test platform and a banana jack corresponding to the ground wire with a banana plug of the signal test line and a banana plug of the ground wire test line; connecting an oscilloscope probe with an oscilloscope, powering on the oscilloscope after the connection is finished, performing related setting on the oscilloscope by using a network cable through a signal recording and reproducing terminal, powering on the satellite, observing the waveform and detail characteristics of the signal through the oscilloscope, performing real-time graphical display on the waveform of the electric signal to be tested by the signal recording and reproducing terminal, and storing and printing normal and abnormal waveforms and detail pictures of the electric signal to be tested by the satellite; and simultaneously, the signal recording and reproducing terminal also stores all original data tested by the satellite electrical signal interface locally, and carries out panoramic reproduction on the test scene after the test is finished.
The positive progress effects of the invention are as follows: the invention does not need to be fixed by hands or other devices, and has simple operation, quick connection and simple structure; the reliable connection between the measuring device and the electric signal to be measured of the satellite is realized, and the rapidity, the safety and the reliability of the connection are effectively improved; the test device has the advantages that the probes on the oscilloscope probe are prevented from being accidentally contacted with other test contact ground wire clamps, accidental short circuit of signals is avoided, and the test safety is effectively improved; the device can be used for carrying out the parallel test of signal positive lines or signal negative lines of a plurality of electric signals to be tested of the satellite and ground signal cascade, and has wider application range. The device can be used for carrying out real-time graphical display on the waveform of the electric signal to be detected of the satellite, and storing and printing normal and abnormal waveforms and detailed pictures of the electric signal to be detected of the satellite; meanwhile, the signal recording and reproducing terminal also stores all original data tested by the satellite electric signal interface locally, and can perform panoramic reproduction on a test scene after the test is finished.
Drawings
FIG. 1 is a schematic diagram of the test connection of the oscilloscope safety measurement device for testing the satellite electrical signal interface according to the present invention.
FIG. 2 is a schematic diagram of a signal testing line according to the present invention.
Fig. 3 is a schematic diagram of the composition of the ground test line of the present invention.
Detailed Description
The following provides a detailed description of the preferred embodiments of the present invention with reference to the accompanying drawings.
As shown in fig. 1 to 3, the safety measurement device for testing the satellite electrical signal interface of the present invention includes a signal test line 101, a ground test line 102, a patch cable 103, a signal patch test platform 104, an oscilloscope probe 105, an oscilloscope 106, and a signal recording and reproducing terminal 107;
the signal test line is used for completing the reliable connection between the probe 110 of the oscilloscope probe and a signal line jack to be tested (which can be the signal positive or the signal negative of the satellite electrical signal to be tested) switched on the signal switching test platform, and performing insulation protection on the oscilloscope probe;
the ground wire test wire is used for reliably connecting a ground wire clamp 108 of the oscilloscope probe with a signal ground wire jack to be tested switched on the signal switching test platform and carrying out insulation protection on the oscilloscope ground wire clamp;
the switching cable is used for switching the electric connector 109 where the satellite electric signal interface is located with an electric connector on the signal switching test platform, and switching the electric signal to be tested of the satellite to a corresponding contact of the electric connector on the signal switching test platform;
the signal switching test platform switches all the electric connector contacts where the satellite electric signals to be tested are located into the banana jacks of the single contacts, so that the satellite electric signals to be tested are conveniently, quickly and reliably connected with the signal test lines and the ground wire test lines respectively;
the oscilloscope probe is used for conditioning signals of the electrical signals to be tested of the satellite and is used for connecting the signal switching test platform and the oscilloscope. The conditioning of the oscilloscope probe to the satellite electric signal to be measured comprises the step of proportionally attenuating the electric signal to be measured, so that the oscilloscope probe and the oscilloscope are prevented from being damaged by overvoltage.
The oscilloscope is used for observing the characteristics and the details of the electrical signal to be measured of the satellite. The oscilloscope is a special oscilloscope with a storage battery for power supply, and during testing, the oscilloscope is not connected with alternating current, so that the problem that the test is inaccurate due to the fact that a ground wire of 220V alternating current is connected with a satellite electrical signal to be tested through an oscilloscope probe to cause interference to the test is avoided.
The signal recording and reproducing terminal can carry out real-time display, recording and post panoramic reproduction on the waveform data of the tested satellite electric signal through the network cable remote control oscilloscope, and comprises the steps of storing and printing normal and abnormal waveforms and detail pictures of the satellite electric signal to be tested in the real-time recording or post panoramic reproduction process, locally storing all test data in the real-time display process and panoramic reproduction of a post test scene.
The adapter cable takes the electric connectors with fewer contacts in the electric connectors at the two ends of the adapter cable as the basis for the arrangement of the contacts and corresponds to the electric connectors one by one according to the sequence of the contact serial numbers; when the electric connectors of the electric signal interface to be tested of the satellite are different, the electric signals are transferred through different transfer cables to adapt to the electric connectors on the signal transfer test platform, so that the test of the electric signals to be tested in various electric connectors of the satellite is achieved, and the application range of the device is greatly expanded.
The signal switching test platform switches all the electric connector contacts on the platform into the banana jacks with single contacts according to the sequence of the contact serial numbers (namely the contacts of the electric connector contacts and the banana jacks are in one-to-one correspondence), so that the densely distributed contacts in the electric connector are switched into the banana jacks which are convenient for test operation and reliable in connection, and the satellite electric signals to be tested are conveniently, quickly and reliably connected with the signal test line and the ground wire test line respectively. The electric connector on the signal transfer test platform is based on the electric connector with the most contacts in the electric connector where the satellite electric signals are located, and all the contacts of the electric connector are completely converted into a banana jack form with a single contact, so that the test requirements of all electric signal interfaces of the satellite are met. The electric connector on the signal transfer test platform is welded with the banana jack through a wire, the contact serial number of the banana jack is arranged above each banana jack, the contact serial number is the contact serial number of the electric connector where the electric signal to be tested of the satellite is located, during testing, only the signal test wire and the ground wire test wire need to be inserted into the banana jack of the corresponding contact of the electric signal to be tested on the signal transfer test platform, and operation is simple. The electrical connector on the signal transfer test platform is designed based on the electrical connector with the largest contact point in the electrical connector of the satellite electrical signal.
The signal recording and reproducing terminal can remotely control the oscilloscope through a network cable, can display the waveform data of the tested satellite electric signal in real time, performs local recording on the original test data, and can reproduce a test scene without distortion after the test of the secondary satellite electric signal interface is finished; the normal or abnormal waveform and the detail picture of the electric signal to be detected of the satellite can be stored and printed in the real-time recording or afterward reproduction process, and the operation is simple and convenient.
The signal testing line consists of an oscilloscope probe protective cap 1, a first lead 2, a first heat-shrinkable sleeve 3 and a red banana-shaped plug 4; wherein:
the protective cap of the oscilloscope probe is used for being reliably connected with a probe on the oscilloscope signal probe, protecting the probe and having an insulating function.
The first lead is used for connecting the oscilloscope probe protective cap and the red banana-shaped plug and is used as a transmission medium of an electrical signal to be tested during testing; the welding spots between the first lead and the oscilloscope probe protective cap and between the first lead and the red banana-shaped plug are coated by the first heat-shrinkable sleeve, so that the insulating protection effect is achieved.
The red banana-shaped plug is internally provided with a first jack 51, and is suitable for simultaneously cascading and parallel testing a plurality of signals sharing the same signal negative line. During testing, one end of the signal testing line is connected with a probe of the oscilloscope probe, the other end of the signal testing line is connected with a signal contact of a corresponding satellite electric signal to be tested on the signal transfer testing platform, and the signal contact can be a signal positive line or a signal negative line. And if cascade parallel testing is needed, the shared signal negative line is cascaded through the first jack inside the red banana-shaped plug.
The ground wire test wire consists of a metal soldering lug 6, a second lead 21, a second heat-shrinkable sleeve 31 and a black banana-shaped plug with a hole 7; wherein:
the metal soldering lug is used for completing connection between the ground wire test wire and a ground wire clamp of the oscilloscope probe, and after the connection, the metal soldering lug and the ground wire clamp of the oscilloscope probe cover the second heat-shrinkable sleeve outside the metal soldering lug to play an insulation protection role. The mechanical size of the metal soldering lug is not too large, and the metal soldering lug can adopt the size with the outer diameter of 5mm, so that the metal soldering lug is conveniently connected with a ground wire clamp of an oscilloscope probe.
The second wire is used for connecting the oscilloscope probe ground wire clamp with the black banana-shaped plug with the hole. During testing, the second lead is used as a transmission medium of an electrical signal to be tested, and a welding spot between the second lead and the oscilloscope probe protective cap and between the second lead and the black banana-shaped plug with the hole is coated by the second heat-shrinkable sleeve, so that the insulation protection effect is achieved. The distance between the left boundary of the second heat-shrinkable sleeve and the center of the metal soldering lug is proper, if the distance is too large, the connection between the metal soldering lug and the ground wire clamp of the oscilloscope probe is inconvenient, and the second heat-shrinkable sleeve can cause a transverse separating force to exist between the metal soldering lug and the ground wire clamp of the oscilloscope probe; when the distance is too small, the second heat-shrinkable sleeve is not enough to coat the metal soldering lug and the exposed metal part of the ground wire clamp of the oscilloscope probe, and the shaking test wire is easy to cause accidental contact with other signal contacts to cause signal short circuit. The length of 10mm is got to this embodiment, accomplishes that simple operation and test security both compromise.
The black banana-shaped plug with holes is internally provided with a second jack 52 which is suitable for simultaneously cascading and parallel testing a plurality of signals sharing one ground wire. During testing, one end of the ground wire test wire is connected with a ground wire clamp of the oscilloscope probe, and the other end of the ground wire test wire is connected with a corresponding ground wire contact of a signal to be tested on the signal transfer test platform. If the ground wire cascade parallel test is needed, the shared signal ground wire is cascaded through the jacks in the black banana-shaped plug.
The adapter cable is composed of electric connectors at two ends and a cable bundle in the middle, so that the structure is simple. When the types of the electric connectors of the signals to be tested on the satellite are different, the electric connectors of the signals to be tested on the satellite need to correspond to different transfer cables so as to adapt to the electric connectors on the signal transfer test platform, the test of the electric signals to be tested in various electric connectors of the satellite is achieved, and the application range of the device is greatly expanded. The difference of different transfer cables is only the electric connector connected with the satellite, and the transfer cables are based on the arrangement of the electric connectors with fewer contacts in the electric connectors at the two ends of the transfer cables and correspond to the electric connectors one by one according to the sequence of the contact numbers, so that the design of the transfer cables is greatly simplified. The connection points of the electric connectors at the two ends of the adapter cable are connected through the welding of the wires, and finally all the wires are coated through the cable protective sleeve (such as the coating of the nylon wire sleeve).
The invention relates to an oscilloscope safety measurement method for testing a satellite electrical signal interface, which comprises the following steps: when a satellite electric signal interface is tested, the electric connector where the satellite electric signal to be tested is located is connected to the electric connector on the signal transfer test platform through a transfer cable, all signal contacts on the signal transfer test platform are converted into banana jacks of single contacts, and the banana jacks correspond to the signal contacts in the electric connector of the signal to be tested one by one; and then, respectively connecting the signal line of the satellite electric signal to be tested on the signal transfer test platform and the banana jack corresponding to the ground wire with the banana plugs of the signal test line and the ground wire test line. For example, the banana-type plug end of the signal test wire is connected with the junction (named as signal 1+) of the switched first signal to be tested 1, and the oscilloscope probe protection cap end of the signal test wire is connected with the probe of the oscilloscope probe; the banana-shaped plug end of the ground wire test wire is connected with a signal ground contact (named signal ground) of the switched signal to be tested, the pad end of the signal test wire is connected with a ground wire clamp of the oscilloscope probe, the signal wire (named signal 2+) of the second signal to be tested 2 is connected with the signal ground contact (the same signal as the ground contact of the signal 1) by the same method, and the like (the same holds true for the cascade parallel test of the signal positive wire or the signal negative wire of the satellite signal to be tested); connecting an oscilloscope probe with an oscilloscope, powering on the oscilloscope (by using a storage battery of the oscilloscope, namely internal electricity power supply) after the connection is finished, performing related setting on the oscilloscope by using a signal recording and reproducing terminal and adopting a network cable, powering on the satellite, observing the waveform and detail characteristics of the signal through the oscilloscope, and performing real-time graphical display on the waveform of the electric signal to be detected of the satellite by using the signal recording and reproducing terminal, so that normal and abnormal waveforms and detail pictures of the electric signal to be detected of the satellite can be stored and printed; meanwhile, the signal recording and reproducing terminal also stores all original data tested by the satellite electric signal interface locally, and can perform panoramic reproduction on a test scene after the test is finished.
In the whole test process, the oscilloscope probes do not need to be held by hands, and other fixing devices are not needed to fix the oscilloscope probes, so that the operation is simple and convenient. In the test process, even if the test circuit related to the oscilloscope probe swings randomly, accidental short circuit of signals cannot be caused, so that damage to products on the satellite is avoided, and the safety of the whole test process is ensured. The switching cable is used for switching the electric connector where the satellite electric signal interface is located and the electric connector on the signal switching test platform, when the electric connector of the satellite electric signal interface to be tested is different, switching is carried out through different switching cables to adapt to the electric connector on the signal switching test platform, the test of signals to be tested in various electric connectors of the satellite is achieved, and the application range is wider. The signal switching test platform is connected with the signal test wire and the ground wire through the banana socket for testing, and the operation is simple, convenient and reliable; the oscilloscope is a special oscilloscope with a storage battery for power supply, so that the problem that the ground wire of 220V alternating current is connected with an electrical signal to be tested of a satellite through an oscilloscope probe to cause interference to the test is avoided, and the test accuracy is ensured. The signal recording and reproducing terminal can remotely control the oscilloscope through a network cable, and can record and reproduce the waveform test data of the satellite electric signal, including storing and printing normal and abnormal waveforms and detailed pictures of the satellite electric signal to be tested, storing all test data locally and reproducing the panorama of a test scene.
The invention does not need to be fixed by hands or other devices, and has simple operation and quick connection. The signal test wire and the ground wire test wire are designed to prevent the oscilloscope probe from accidentally contacting with other test contact ground wire clamps, thereby avoiding accidental short circuit of signals and effectively improving the test safety; the signal switching test platform switches all the electric connector contacts where the satellite electric signals to be tested are positioned into the banana jack with a single contact, so that the signal switching platform is conveniently, quickly and reliably connected with the signal test wire and the ground wire test wire. The design of the transfer cable, the signal transfer test platform, the signal test wire and the ground wire test wire jack can carry out the parallel test of the cascade connection of a plurality of signal wires of electric signals to be tested in various point connectors of the satellite and a plurality of ground signal wires, thereby greatly improving the application range of the device in the aspect of testing the satellite electric interface; the oscilloscope can be remotely controlled by the signal recording and reproducing terminal through a network cable, the recording and reproducing of the waveform test data of the satellite electric signals are realized, the normal and abnormal waveforms and the detail pictures of the satellite electric signals to be tested are stored and printed, the local storage of all test data and the panoramic reproduction of the test scene are realized, and the query of the test data is facilitated.
The above embodiments are described in further detail to solve the technical problems, technical solutions and advantages of the present invention, and it should be understood that the above embodiments are only examples of the present invention and are not intended to limit the present invention, and any modifications, equivalent substitutions, improvements and the like made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (9)
1. The oscilloscope safety measurement device for the satellite electrical signal interface test is characterized by comprising a signal test line, a ground wire test line, a switching cable, a signal switching test platform, an oscilloscope probe, an oscilloscope and a signal recording and reproducing terminal;
the signal test wire is used for completing reliable connection between a probe of the oscilloscope probe and a signal wire jack to be tested switched on the signal switching test platform and performing insulation protection on the oscilloscope probe;
the ground wire test wire is used for reliably connecting a ground wire clamp of the oscilloscope probe with a signal ground wire jack to be tested switched on the signal switching test platform and carrying out insulation protection on the oscilloscope ground wire clamp;
the switching cable is used for switching an electric connector where the satellite electric signal interface is located and an electric connector on the signal switching test platform, and switching the electric signal to be tested of the satellite to a corresponding contact of the electric connector on the signal switching test platform;
the signal switching test platform switches all the electric connector contacts where the satellite electric signals to be tested are located into the banana jacks of the single contacts so as to complete the connection between the satellite electric signals to be tested and the signal test line and the ground wire test line respectively;
the oscilloscope probe is used for conditioning signals of the electrical signals to be tested of the satellite and is used for connecting the reliable connection between the signal transfer test platform and the oscilloscope; the conditioning of the oscilloscope probe on the satellite electric signal to be measured comprises the steps of attenuating the satellite electric signal to be measured in proportion, and avoiding overvoltage from damaging the oscilloscope probe and the oscilloscope;
the oscilloscope is used for observing the characteristics and the details of the electrical signal to be measured of the satellite; the oscilloscope is a special oscilloscope with a storage battery for power supply, and during testing, the oscilloscope is not connected with alternating current, so that the problem that the test is inaccurate due to interference caused by the fact that the earth wire of the alternating current is connected with the electrical signal to be tested of the satellite through the oscilloscope probe is avoided;
the signal recording and reproducing terminal can carry out real-time display, recording and post panoramic reproduction on the waveform data of the tested satellite electric signal through the network cable remote control oscilloscope, and comprises the steps of storing and printing normal and abnormal waveforms and detail pictures of the satellite electric signal to be tested in the real-time recording or post panoramic reproduction process, locally storing all test data in the real-time display process and panoramic reproduction of a post test scene.
2. The oscilloscope safety measurement device for satellite electrical signal interface testing according to claim 1, wherein said signal test line consists of an oscilloscope probe protection cap, a first wire, a first heat shrink sleeve and a red banana-shaped plug; wherein: the oscilloscope probe protective cap is used for being reliably connected with a probe on an oscilloscope signal probe, protecting the probe and having an insulation effect; the first lead is used for connecting the oscilloscope probe protective cap and the red banana-shaped plug and is used as a transmission medium of an electrical signal to be tested of the satellite during testing; welding spots among the first lead, the oscilloscope probe protective cap and the red banana-shaped plug are coated by a first heat-shrinkable sleeve, so that the insulating protection effect is achieved; the red banana-shaped plug is internally provided with a first jack and is suitable for simultaneously cascading and testing a plurality of signals sharing the same signal positive line or negative line; during testing, one end of the signal testing line is connected with a probe of the oscilloscope probe, the other end of the signal testing line is connected with a corresponding signal contact to be tested on the signal transfer testing platform, and the signal line to be tested can be a positive line or a negative line of the signal to be tested.
3. The oscilloscope safety measurement device for satellite electrical signal interface test according to claim 1, wherein said ground wire test line is composed of a metal soldering lug, a second conducting wire, a second heat-shrinkable sleeve and a black banana-shaped plug with holes; wherein: the metal soldering lug is used for completing the connection between the ground wire test wire and a ground wire clamp of the oscilloscope probe, and after the connection, the metal soldering lug and the ground wire clamp of the oscilloscope probe cover the second heat-shrinkable sleeve outside the metal soldering lug to play an insulation protection role; the second wire is used for connecting the oscilloscope probe ground wire clamp with the black banana-shaped plug with the hole; during testing, the second lead is used as a transmission medium of an electrical signal to be tested of the satellite, and a welding spot between the second lead and the oscilloscope probe protective cap and between the second lead and the black banana-shaped plug with the hole is coated by a second heat-shrinkable sleeve, so that the insulation protection effect is achieved; the black banana-shaped plug with the hole is internally provided with a second jack which is suitable for simultaneously cascading and parallel testing a plurality of signals sharing one ground wire; during testing, one end of the ground wire test wire is connected with a ground wire clamp of the oscilloscope probe, and the other end of the ground wire test wire is connected with a ground wire contact of a corresponding satellite electric signal to be tested on the signal transfer test platform.
4. The device as claimed in claim 1, wherein the adapting cable is based on the arrangement of the contacts of the electrical connectors at the two ends of the adapting cable, and the electrical connectors are in one-to-one correspondence with each other according to the sequence of the contact numbers; when the electric connectors of the electric signal interfaces to be tested of the satellite are different, the electric signals are switched through different switching cables to adapt to the electric connectors on the signal switching test platform, so that the test of the electric signals to be tested of the satellite in various electric connectors of the satellite is achieved.
5. The oscilloscope safety measurement device for satellite electrical signal interface testing according to claim 1, wherein said patch cable is comprised of electrical connectors at both ends and a cable bundle in the middle.
6. The device as claimed in claim 1, wherein the signal switching test platform switches all the contacts of the electrical connector on the platform to banana jacks with single contacts according to the sequence of the contact numbers, so as to realize the dense arrangement of contacts in the electrical connector to banana jacks convenient for test operation and reliable connection, so as to complete the convenient, fast and reliable connection between the electrical signal to be tested of the satellite and the signal test line and the ground test line respectively; the electric connector on the signal transfer test platform is based on the electric connector with the most contacts in the electric connector where the satellite electric signals are located, and all the contacts of the electric connector are completely converted into a banana jack form with single contacts.
7. The device as claimed in claim 1, wherein the electrical connector on the signal transfer testing platform is soldered to the banana jack via a wire, and a serial number of a contact of the banana jack is located above each banana jack, where the serial number of the contact is a serial number of a contact in the electrical connector where the electrical signal to be tested of the satellite is located.
8. The device as claimed in claim 1, wherein the signal recording and reproducing terminal is capable of remotely controlling the oscilloscope via a network cable, displaying waveform data of the satellite electrical signal to be tested in real time, recording original test data locally, and reproducing a test scene without distortion after the satellite electrical signal interface is tested; the normal or abnormal waveform and detail picture of the electric signal to be detected of the satellite can be stored and printed in the real-time recording or afterward reproduction process.
9. The method for the oscilloscope safety measurement device for the satellite electrical signal interface test is characterized by comprising the following steps of: when a satellite electric signal interface is tested, the electric connector where the satellite electric signal to be tested is located is connected to the electric connector on the signal transfer test platform through a transfer cable, all signal contacts on the signal transfer test platform are converted into banana jacks of single contacts, and the banana jacks correspond to the signal contacts in the satellite electric signal to be tested one by one; then, respectively connecting a signal line of the satellite electric signal to be tested on the signal transfer test platform and a banana jack corresponding to the ground wire with a banana plug of the signal test line and a banana plug of the ground wire test line; connecting an oscilloscope probe with an oscilloscope, powering on the oscilloscope after the connection is finished, performing related setting on the oscilloscope by using a network cable through a signal recording and reproducing terminal, powering on the satellite, observing the waveform and detail characteristics of the signal through the oscilloscope, performing real-time graphical display on the waveform of the electric signal to be tested by the signal recording and reproducing terminal, and storing and printing normal and abnormal waveforms and detail pictures of the electric signal to be tested by the satellite; and simultaneously, the signal recording and reproducing terminal also stores all original data tested by the satellite electrical signal interface locally, and carries out panoramic reproduction on the test scene after the test is finished.
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| CN110888000B (en) * | 2018-09-10 | 2022-02-08 | 北京小米松果电子有限公司 | RBDP interface availability detection method, platform, display terminal and system |
| CN110568307A (en) * | 2019-09-12 | 2019-12-13 | 中国科学院微小卫星创新研究院 | Automatic testing device and method for satellite single-machine interface |
| CN112730921A (en) * | 2021-01-27 | 2021-04-30 | 邹西全 | Detector for 5G signal test and using method |
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