Seismic source control digital package testing apparatus

Abstract

The application discloses a kind of seismic source control digital package test device, it is related to marine oil seismic exploration field, wherein, central processing circuit in the device is used to communicate with control circuit, the data of the digital package to be measured that control circuit feedback is analyzed, to detect whether each function of the digital package to be measured is normal;Control circuit is used to control the digital package to be measured, and the data of multiple dimensions corresponding to the digital package to be measured is collected and fed back to central processing circuit;Power supply circuit is used to provide electrical energy for each circuit in the device and the digital package to be measured;Power filter circuit is used to filter the output voltage of power supply circuit;Pre-set capacitor is used to charge test for the digital package to be measured;Pre-set power resistor is used to discharge to pre-set capacitor, to simulate air gun ignition.The application realizes the comprehensive automatic test of digital package function, effectively reduces the omission in test process, and improves test efficiency.

Description

Technical Field

[0001] This invention relates to the field of marine oil seismic exploration, specifically to a source control digital package testing device. Background Technology

[0002] In actual offshore oil seismic exploration operations, the requirements for the seismic waves generated by the seismic source are becoming increasingly stringent, necessitating the use of a seismic source control system. The core component of this system includes digital packet equipment that controls the ignition of underwater air guns and data acquisition. Typically, geophysical exploration vessels require six arrays for seismic source excitation, each array containing eight digital packets. Due to the harsh marine environment and the large number of digital packets used, any malfunction can impact production. Current technology requires quality testing of the digital packets before their formal application, usually through manual testing to check various indicators. However, this testing system is not comprehensive enough, prone to omissions, and is inefficient and time-consuming. Summary of the Invention

[0003] In view of the above problems, the present invention is proposed to provide a source control digital packet testing apparatus that overcomes or at least partially solves the above problems.

[0004] According to one aspect of the present invention, a source control digital package testing device is provided, the device comprising: a central processing circuit, a control circuit, a power supply circuit, a power supply filtering circuit, a preset capacitor, and a preset power resistor;

[0005] The central processing circuit is used to: communicate with the control circuit and analyze the data of the digital packet under test fed back by the control circuit in order to detect whether the various functions of the digital packet under test are normal.

[0006] The control circuit is used to: control the digital packet under test, collect data from multiple dimensions corresponding to the digital packet under test, and feed the collected data back to the central processing circuit;

[0007] The power supply circuit is used to provide power to the various circuits in the source control digital packet test device and the digital packet under test;

[0008] The power supply filter circuit is used to filter the output voltage of the power supply circuit.

[0009] The preset capacitor is used for: charging the digital packet under test;

[0010] The preset power resistor is used to discharge the preset capacitor to simulate air gun ignition.

[0011] Furthermore, the control circuit is further used to: simulate sensor signals, send excitation signals to the digital packet under test, and acquire the charging and discharging voltage of the digital packet under test.

[0012] Furthermore, the control circuit includes: an analog-to-digital converter acquisition front-end circuit containing an operational amplifier;

[0013] In the analog-to-digital conversion acquisition front-end circuit, the input terminal of the air gun is connected to the operational amplifier through a resistor, and the input terminal of the air gun is connected to the transient voltage suppression diode.

[0014] Furthermore, the control circuit includes: a digital potentiometer and a signal relay;

[0015] During normal communication testing, the line is connected via a signal relay to test the communication quality between the line and the digital packet under test during normal communication.

[0016] When performing signal insulation testing, the signal relay is disconnected, and the line passes through a digital potentiometer to control the resistance value of the digital potentiometer. The communication quality between the line and the digital packet under test is tested during insulation.

[0017] When performing a leakage current test, the signal relay is closed, and the communication signal line is grounded through a digital potentiometer. The resistance value of the digital potentiometer is controlled to test the communication quality between the device and the digital packet under test during leakage current testing.

[0018] Furthermore, the power supply circuit is further used to convert the power supply voltage from 220V to 48V.

[0019] Furthermore, each function includes at least: communication function of the digital packet under test, ignition function of the air gun source solenoid valve, signal acquisition function of the air gun coil, near-field signal acquisition function, auxiliary signal acquisition function, ignition delay calculation function, and ignition status judgment function.

[0020] Furthermore, the data from multiple dimensions includes at least: air gun voltage, air gun current, air gun coil signal, external pressure depth signal, internal pressure depth signal, power supply voltage, power supply current, near-field signal, ignition voltage, output voltage, and the charging and discharging voltage of the digital package under test.

[0021] Furthermore, the central processing circuit, control circuit, power supply circuit, power supply filter circuit, preset capacitor, and preset power resistor are mounted on the circuit board.

[0022] The device also includes a housing for containing the circuit boards.

[0023] Furthermore, the enclosure also includes: ventilation holes and mounting brackets for securing the circuit board.

[0024] Furthermore, the device also includes a control panel; the control panel is equipped with at least the following: a power switch for controlling the opening and closing of the source control digital packet test device, an aviation plug interface for connecting the digital packet under test, communication indicator lights, and a screen.

[0025] According to the technical solution provided by this invention, all functions of the digital package test items are integrated, which can complete the signal acquisition and analysis process related to the functional test of the digital package under test, and comprehensively test each function of the digital package under test. This provides a complete test system, realizes the comprehensive automatic test of the digital package function, makes the quality inspection of the digital package more complete, helps to improve the stability of the seismic source control system, overcomes the problem of incomplete digital package functional testing by manual means, not only effectively reduces omissions in the testing process, but also effectively improves testing efficiency and reduces testing time.

[0026] The above description is merely an overview of the technical solution of the present invention. In order to better understand the technical means of the present invention and to implement it in accordance with the contents of the specification, and in order to make the above and other objects, features and advantages of the present invention more apparent and understandable, specific embodiments of the present invention are described below. Attached Figure Description

[0027] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the invention. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0028] Figure 1 A schematic diagram of the structure of a source control digital packet testing device according to an embodiment of the present invention is shown;

[0029] Figure 2 A schematic diagram of the analog-to-digital conversion acquisition front-end circuit in the control circuit is shown;

[0030] Figure 3 A schematic diagram of a zero-ohm path for near-field 485 communication testing under normal communication test scenarios is shown in the control circuit.

[0031] Figure 4 A schematic diagram of a zero-ohm path for 485 communication testing under normal communication test scenarios in the control circuit is shown.

[0032] Figure 5 This diagram shows the connection schematic of a digital potentiometer in a signal insulation test scenario within a control circuit.

[0033] Figure 6 A schematic diagram of signal switching in a leakage current test scenario is shown in the control circuit;

[0034] Figure 7 This diagram shows the connection schematic of the digital potentiometer in a leakage current test scenario in the control circuit.

[0035] Figure 8 A schematic diagram of a source control digital packet test device is shown. Detailed Implementation

[0036] Exemplary embodiments of the present disclosure will now be described in more detail with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.

[0037] This invention provides a test device for digital packets of seismic source control, which can perform quality testing on the digital packets under test of underwater ignition control and data acquisition of seismic source control systems. Figure 1 A schematic diagram of the structure of a source control digital packet testing device according to an embodiment of the present invention is shown, as follows: Figure 1 As shown, the device 100 includes: a central processing circuit 110, a control circuit 120, a power supply circuit 130, a power supply filtering circuit 140, a preset capacitor 150, and a preset power resistor 160.

[0038] The central processing circuit 110 is connected to the control circuit 120. The central processing circuit 110 is used to: communicate with the control circuit 120; and analyze the data from the digital packet under test 170 fed back by the control circuit 120 to detect whether the various functions of the digital packet under test 170 are normal. In this embodiment, the central processing circuit 110 is responsible for communicating with the control circuit 120, analyzing the data from the digital packet under test 170 from the control circuit 120, and detecting whether the various functions of the digital packet under test 170 are normal.

[0039] Specifically, each function includes at least: communication function of the digital packet under test (DUT), ignition function of the air gun source solenoid valve, signal acquisition function of the air gun coil, near-field signal acquisition function, auxiliary signal acquisition function, ignition delay calculation function, and ignition status judgment function. Each function may also include power supply control of the DUT and pressure depth signal acquisition function. Based on the relevant waveforms acquired by the host computer software, the ignition voltage acquisition function, air gun coil signal acquisition function, and near-field signal acquisition function of the DUT 170 under different types of air guns can be tested. Furthermore, based on the voltage amplitude set by the software, the changes in internal and external pressure depth can be verified. To facilitate the testing of whether each function of the digital package under test 170 is normal, the source control digital package testing device 100 can pre-store the standard data range corresponding to the normal function for each function. When it is necessary to test whether the function of the digital package under test 170 is normal, the data (such as waveform) collected for the function can be compared with the standard data range corresponding to the function. If it does not conform to the standard data range, it can be determined that the function is abnormal. If it conforms to the standard data range, it can be determined that the function is normal.

[0040] The auxiliary signals may include ignition voltage, current, and circuit status. The source control digital package testing device in this embodiment integrates all functions of the digital package testing items, enabling it to complete the acquisition and analysis of signals related to the functional testing of the digital package under test. It comprehensively tests each function of the digital package under test, providing a complete testing system and achieving comprehensive automated testing of the digital package functions. This overcomes the problem of incomplete manual testing of digital package functions, effectively reducing omissions during the testing process and significantly improving testing efficiency and time consumption.

[0041] The control circuit 120 is connected to the power filter circuit 140, the preset capacitor 150, and the preset power resistor 160. Additionally, to facilitate connection and testing of the digital packet 170 under test, the device also includes a test interface 180. The control circuit 120 can be connected via a set of wires (such as...). Figure 1 (Represented by a thick double-headed arrow with a slash) is connected to the test interface 180. The control circuit 120 is used to: control the digital package under test 170, collect data from multiple dimensions corresponding to the digital package under test 170, and feed the collected data back to the central processing circuit 110. Among them, the data from multiple dimensions includes at least: air gun voltage, air gun current, air gun coil signal, external pressure depth signal, internal pressure depth signal, power supply voltage, power supply current, near-field signal, ignition voltage, output voltage, and the charging and discharging voltage of the digital package under test.

[0042] Specifically, the control circuit 120 can simulate sensor signals, send excitation signals to the digital packet under test 170, and collect the charging and discharging voltage of the digital packet under test 170 to detect whether the charging speed and discharging of the digital packet under test 170 are normal.

[0043] During voltage and current acquisition, the acquired voltage and current vary depending on the type of air gun required. Therefore, adjustments need to be made to the voltage and current acquisition circuits corresponding to different types of air guns. The source control digital packet testing device has multiple voltage acquisition channels. The largest voltage is the instantaneous output voltage of the digital packet under test in BOLT air gun operating mode, which can reach 90V. Existing AD (analog-to-digital) chips are clearly outside its input range. BOLT air guns refer to those manufactured by BOLT Corporation. To ensure effective air gun voltage and current acquisition, this embodiment includes an analog-to-digital conversion acquisition front-end circuit (i.e., AD acquisition front-end circuit) containing an operational amplifier in the control circuit 120. The operational amplifier conditions the signal. By adjusting the feedback resistor, the voltage can be amplified and reduced to an input range acceptable to the AD chip for acquisition. In the analog-to-digital conversion acquisition front-end circuit, the air gun's input terminal is connected to the operational amplifier via a resistor, and the air gun's input terminal is also connected to a transient voltage suppression diode.

[0044] Figure 2 A schematic diagram of the analog-to-digital conversion acquisition front-end circuit in the control circuit is shown, such as... Figure 2 As shown, the operational amplifier model can be HT8602ARZ; the voltage inputs of air gun 1 and air gun 2 are represented as GUN1 and GUN2 respectively. GUN1 is connected to pin 3 of the operational amplifier, and GUN2 is connected to pin 5. A resistor (R12) is connected between GUN1 and pin 3, and a resistor (R19) is connected between GUN2 and pin 5. Vo / Vi = 1 / 36, and the input range of the AD converter after the operational amplifier is 0-3.3V, theoretically allowing a DC voltage range of 0-118.8V. A transient voltage suppressor diode (TVS diode) is connected to each signal input terminal (GUN1 and GUN2) to prevent overshoot damage to the AD chip caused by unstable input signals. The transient voltage suppressor diode model can be SM6T100CA. The analog-to-digital conversion acquisition front-end circuit can be packaged in an SOP-8 package. According to the actual data acquisition test results, the acquisition error is within 2% after analog-to-digital conversion acquisition front-end circuit and AD acquisition.

[0045] This embodiment also implements near-field and command 485 communication testing. The 485 communication test mainly consists of three parts: normal communication testing, signal insulation testing, and leakage current testing. Based on these tests, this embodiment adaptively adjusts the resistance value of the digital potentiometer in the control circuit. Near-field and command 485 communication testing is achieved using the digital potentiometer. By changing different resistance values ​​of the digital potentiometer, the impact on actual communication is compared to determine the continuity of the communication line and leakage current issues. Specifically, the control circuit 120 includes a digital potentiometer and a signal relay. The settings of the digital potentiometer and signal relay are described in detail below for the three test scenarios: normal communication testing, signal insulation testing, and leakage current testing.

[0046] (1) Normal Communication Test: During the normal communication test, the line is connected through a signal relay, that is, the line is directly connected through the signal relay to test the communication quality between the digital packet under test and the device under test. Because it was found during the selection of digital potentiometers that the minimum resistance of some high-value digital potentiometers is not 0 ohms, the line resistance is not ideally 0 ohms when no line quality test is performed. In this embodiment, a signal relay is connected across the line to solve the problem that the minimum resistance of the digital potentiometer is not 0 ohms. Figure 3 This diagram illustrates a zero-ohm path for near-field 485 communication testing under normal communication test scenarios in the control circuit. Figure 4 The diagram shows a zero-ohm path for 485 communication testing under normal communication test scenarios in the control circuit. The signal relay model can be HFD4 / 5-SR, and it can be packaged in an SMD-8 package. The rated power of a single signal relay is 120mW.

[0047] (2) Signal Insulation Test: When performing a signal insulation test, disconnect the signal relay, and let the line pass through a digital potentiometer. Control the resistance value of the digital potentiometer to test the communication quality between the signal relay and the digital packet under test during insulation. When a signal insulation test is required, disconnect the signal relay, and let the line pass through the digital potentiometer. The digital potentiometer can be programmed to increase the resistance value on the line. The step value of the digital potentiometer is 100K / 256, approximately 390 ohms, with a starting value of 50 ohms and a maximum of 100 kiloohms. Figure 5 The diagram shows the connection of a digital potentiometer in a signal insulation test scenario in a control circuit. The potentiometer can be packaged in a TSSOP-24 package and the model number can be AD8403ARUZ100.

[0048] (3) Leakage test: When performing a leakage test, close the signal relay, ground the communication signal line through the digital potentiometer, control the resistance value of the digital potentiometer, and test the communication quality between the digital packet under test when leakage occurs. Figure 6 A schematic diagram of signal switching in a leakage current test scenario is shown in the control circuit. Figure 7 This diagram illustrates the connection of a digital potentiometer in a leakage current test scenario within a control circuit. The potentiometer can be packaged in a TSSOP-24 package, and the model number is AD8403ARUZ100. During the leakage current test, the two signal lines of the 485 circuit are grounded through one of the digital potentiometer's lines. When performing the leakage current test... Figure 6 The signal relay in the middle is closed, such as Figure 7 The effect of leakage current on RS485 communication quality is then tested by using a program to control the resistance value of a digital potentiometer.

[0049] like Figure 1 As shown, the power supply circuit 130 is connected to the power supply filter circuit 140. The power supply circuit 130 is used to provide power to the various circuits in the source control digital packet test device 100 and the digital packet under test 170. Specifically, the power supply circuit 130 converts the power supply voltage from 220V to 48V.

[0050] The power supply filter circuit 140 is used to filter the output voltage of the power supply circuit 130, effectively preventing damage to the digital packet under test 170 and the control circuit 120 caused by frequent switching of the vibration source control digital packet test device 100 in short periods of time, and ensuring the voltage required for power supply to the digital packet under test 170. The power supply filter circuit 140 achieves the function of circuit filtering protection.

[0051] The preset capacitor 150 and the preset power resistor 160 are connected to the control circuit 120. The preset capacitor 150 is used to charge the digital packet 170 under test, and the preset power resistor 160 is used to discharge the preset capacitor 150 to simulate the ignition of an actual air gun.

[0052] Optionally, the central processing circuit 110, control circuit 120, power supply circuit 130, power supply filter circuit 140, preset capacitor 150, and preset power resistor 160 can be mounted on a circuit board. Each circuit can be mounted on the circuit board in a pluggable manner.

[0053] The source control digital package test device also includes a housing to house the circuit board, protecting the hardware circuitry of the device and facilitating portability and installation. Specifically, the housing can be a standard 19-inch chassis, 2U (88.9mm) high and 456mm deep, with 3mm thick inner walls, allowing it to be placed in a 19-inch server rack.

[0054] The enclosure may also include ventilation holes and mounting brackets for securing the circuit board. The mounting brackets secure the circuit board within the enclosure.

[0055] Optionally, the source control digital packet testing device may also include a control panel. The control panel should at least include: a power switch for controlling the opening and closing of the source control digital packet testing device, an aviation connector for connecting the digital packet under test, communication indicator lights, and a screen. In practical applications, the control panel may include one power switch, one aviation connector, one buzzer port, two 485 communication indicator lights, a screen, and test points (such as buttons corresponding to various test functions). A small industrial computer is located below the control panel; the screen requires power and an HDMI cable connection, and can be connected to the control panel. Functional testing of the source control digital packet testing device may include: serial port parameter settings, air gun parameter configuration, near-field parameter configuration, pressure and depth parameter configuration, and acquisition parameter configuration, etc. The serial port parameter settings can include setting the coil serial port parameters, near-field serial port parameters, and test system serial port parameters; the air gun parameter configuration can include configuring the air gun type, ignition detection method, and air gun delay; the near-field parameter configuration can include configuring the reference aiming point, advance acquisition time, waveform inversion, and data compression; the pressure and depth parameter configuration can include internal / external type, K, B, Z value configuration, and fundamental frequency configuration, where the K value represents the slope of change, the B value represents the longitudinal intercept, and the Z value represents the offset; the acquisition parameter configuration can include configuring the sampling rate and recording length of the coil signal and near-field signal.

[0056] Figure 8 A schematic diagram of a source control digital packet testing device is shown, such as... Figure 8 As shown, the inner side of the first part 810 of the housing in the source control digital package test device can also be provided with a storage bag to hold accessories such as connecting wires; the second part 820 of the housing is provided with a control panel 830, which is equipped with a power switch, buttons corresponding to various test functions, communication indicator lights, etc.; the side wall of the second part 820 of the housing is also provided with an aviation plug interface and a power interface for connecting the digital package under test.

[0057] The process of using the source control digital package test device is as follows: connect each connector of the digital package to be tested to the source control digital package test device, then turn on the power switch of the source control digital package test device, and the industrial control computer inside the test system will automatically start up; the operation interface is displayed on the screen, and the parameters are configured on the operation interface according to the relevant functional requirements; and the function test of the digital package to be tested is performed.

[0058] The source control digital package testing device provided in this embodiment integrates all functions of the digital package test items, enabling the acquisition and analysis of relevant signals for the functional testing of the digital package under test. It comprehensively tests each function of the digital package under test, providing a complete testing system and realizing fully automated testing of the digital package functions. This makes the quality inspection of the digital package more complete, helps improve the stability of the source control system, overcomes the problem of incomplete digital package functional testing relying on manual methods, effectively reduces omissions in the testing process, and significantly improves testing efficiency and reduces testing time.

[0059] The algorithms and displays provided herein are not inherently related to any particular computer, virtual system, or other device. Various general-purpose systems can also be used in conjunction with the teachings herein. The required structure for constructing such systems is apparent from the above description. Furthermore, this invention is not directed to any particular programming language. It should be understood that the contents of the invention described herein can be implemented using various programming languages, and the above description of specific languages ​​is for the purpose of disclosing the best mode of implementation of the invention.

[0060] Numerous specific details are set forth in the specification provided herein. However, it will be understood that embodiments of the invention may be practiced without these specific details. In some instances, well-known methods, structures, and techniques have not been shown in detail so as not to obscure the understanding of this specification.

[0061] Similarly, it should be understood that, in order to streamline this disclosure and aid in understanding one or more of the various inventive aspects, in the above description of exemplary embodiments of the invention, various features of the invention are sometimes grouped together in a single embodiment, figure, or description thereof. However, this method of disclosure should not be interpreted as reflecting an intention that the claimed invention requires more features than are expressly recited in each claim. Rather, as reflected in the claims, inventive aspects lie in fewer than all features of a single foregoing disclosed embodiment. Therefore, the claims following the detailed description are hereby expressly incorporated into that detailed description, wherein each claim itself is a separate embodiment of the invention.

[0062] Those skilled in the art will understand that modules in the device of the embodiments can be adaptively changed and placed in one or more devices different from that embodiment. Modules, units, or components in the embodiments can be combined into a single module, unit, or component, and further, they can be divided into multiple sub-modules, sub-units, or sub-components. Except where at least some of such features and / or processes or units are mutually exclusive, any combination can be used to combine all features disclosed in this specification (including the accompanying claims, abstract, and drawings) and all processes or units of any method or device so disclosed. Unless expressly stated otherwise, each feature disclosed in this specification (including the accompanying claims, abstract, and drawings) may be replaced by an alternative feature that serves the same, equivalent, or similar purpose.

[0063] Furthermore, those skilled in the art will understand that although some embodiments described herein include certain features but not others included in other embodiments, combinations of features from different embodiments are intended to be within the scope of the invention and form different embodiments. For example, in the claims, any of the claimed embodiments can be used in any combination.

[0064] The various component embodiments of the present invention can be implemented in hardware, or as software modules running on one or more processors, or a combination thereof. Those skilled in the art will understand that microprocessors or digital signal processors (DSPs) can be used in practice to implement some or all of the functions of some or all of the components according to the embodiments of the present invention. The present invention can also be implemented as a device or apparatus program (e.g., a computer program and computer program product) for performing part or all of the methods described herein. Such programs implementing the present invention can be stored on a computer-readable medium, or can be in the form of one or more signals. Such signals can be downloaded from an Internet website, provided on a carrier signal, or provided in any other form.

[0065] It should be noted that the above embodiments are illustrative of the invention and not restrictive, and that those skilled in the art can devise alternative embodiments without departing from the scope of the appended claims. In the claims, any reference signs placed between parentheses should not be construed as limiting the claims. The word "comprising" does not exclude the presence of elements or steps not listed in the claims. The word "a" or "an" preceding an element does not exclude the presence of a plurality of such elements. The invention can be implemented by means of hardware comprising several different elements and by means of a suitably programmed computer. In the unit claims enumerating several means, several of these means may be embodied by the same item of hardware. The use of the words first, second, and third, etc., does not indicate any order. These words can be interpreted as names.

Claims

1. A source control digital packet testing device, characterized in that, The device includes: a central processing circuit, a control circuit, a power supply circuit, a power supply filter circuit, a preset capacitor, and a preset power resistor. The central processing circuit is used to: communicate with the control circuit and analyze the data of the digital packet under test fed back by the control circuit to detect whether the various functions of the digital packet under test are normal; the various functions include at least: communication function of the digital packet under test, ignition function of the air gun source solenoid valve, signal acquisition function of the air gun coil, near-field signal acquisition function, auxiliary signal acquisition function, ignition delay calculation function, and ignition status judgment function. The control circuit is connected to the power filter circuit, the preset capacitor, and the preset power resistor, and is used to: control the digital packet under test, collect data from multiple dimensions corresponding to the digital packet under test, and feed the collected data back to the central processing circuit; the multiple dimensions of data include at least: air gun voltage, air gun current, air gun coil signal, external pressure depth signal, internal pressure depth signal, power supply voltage, power supply current, near-field signal, ignition voltage, output voltage, and the charging and discharging voltage of the digital packet under test; The power supply circuit is used to provide power to the various circuits in the source control digital packet testing device and the digital packet under test. The power supply filter circuit is used to filter the output voltage of the power supply circuit. The preset capacitor is used to: perform a charging test on the digital packet under test; The preset power resistor is used to discharge the preset capacitor to simulate air gun ignition. The control circuit is further used to: simulate sensor signals, send excitation signals to the digital packet under test, and collect the charging and discharging voltage of the digital packet under test, so as to detect whether the charging speed and discharging of the digital packet under test are normal.

2. The apparatus according to claim 1, characterized in that, The control circuit includes: an analog-to-digital converter acquisition front-end circuit containing an operational amplifier; In the analog-to-digital conversion acquisition front-end circuit, the input terminal of the air gun is connected to the operational amplifier through a resistor, and the input terminal of the air gun is connected to a transient voltage suppression diode.

3. The apparatus according to claim 1, characterized in that, The control circuit includes: a digital potentiometer and a signal relay; During normal communication testing, the line is connected through the signal relay to test the communication quality between the digital packet under test and the digital packet under test during normal communication. When performing a signal insulation test, the signal relay is disconnected, and the line passes through the digital potentiometer to control the resistance value of the digital potentiometer, thereby testing the communication quality between the signal relay and the digital packet under test during insulation. When performing a leakage current test, the signal relay is closed, the communication signal line is grounded through the digital potentiometer, and the resistance value of the digital potentiometer is controlled to test the communication quality between the device and the digital packet under test during leakage current testing.

4. The apparatus according to claim 1, characterized in that, The power supply circuit is further used to convert the power supply voltage from 220V to 48V.

5. The apparatus according to any one of claims 1-4, characterized in that, The central processing circuit, the control circuit, the power supply circuit, the power filter circuit, the preset capacitor, and the preset power resistor are disposed on the circuit board; The device further includes a housing for accommodating the circuit board.

6. The apparatus according to claim 5, characterized in that, The enclosure also includes: heat dissipation holes and a mounting bracket for fixing the circuit board.

7. The apparatus according to claim 5, characterized in that, The device further includes a control panel; the control panel is equipped with at least: a power switch for controlling the opening and closing of the source control digital packet test device, an aviation plug interface for connecting the digital packet under test, a communication indicator light, and a screen.

Images