Data signal test equipment

Abstract

The present invention discloses a data signal testing device, including a system under test, wherein the end of the system under test is electrically connected to a measuring point; a signal acquisition device, connected to the measuring point signal transmission, for performing power access measurement on the system under test; a real-time simulation controller, for receiving a test instruction from a host computer and transmitting a characteristic signal or a default signal to a signal amplifying device; a host computer, for issuing a test instruction to the real-time simulation controller; and a signal amplifying device, for replacing a front-end device of the system under test to issue a power output signal. The present invention collects data from the system under test through a signal acquisition device, and uses a real-time simulation controller in combination with a host computer to analyze and extract the collected data; and the host computer issues a trigger instruction at any time to issue a characteristic signal of the collected data, thereby completing remote operation and integrated measurement and control of special signal analysis and processing during control research.

Description

Technical Field

[0001] The present invention relates to the field of data testing equipment, and in particular to a data signal testing device. Background Art

[0002] In the field of electronic technology, the signal detection device is the sensing, measurement and data collection of the original signal, which is mainly related to the hardware system. The data signal extracted in the scientific research process is captured by the data signal test device, and a host computer trigger is used to send it out in the form of a voltage signal, thereby restoring the signal characteristics of a certain link in the research process. The data signal test device can observe and collect the signals of the system under test, and send the data in the form of a signal, which is applied to the system under test, thereby restoring the specific working conditions of a certain link in the system under test. However, the traditional method cannot complete the remote operation and integrated measurement and control of signal capture, signal generation and detection of the system under test. The process involves multiple steps and the operation method is relatively cumbersome. Summary of the invention

[0003] The main purpose of the present invention is to provide a data signal testing device, which can effectively solve the problems in the background technology.

[0004] To achieve the above objectives, the present invention is implemented through the following technical solutions:

[0005] A data signal testing device comprises a system under test, wherein an end of the system under test is electrically connected to a measuring point;

[0006] A signal acquisition device, electrically connected to the measuring point, for performing power access measurement on the system under test;

[0007] The real-time simulation controller is used to receive the test instructions from the host computer and transmit the characteristic signal or the default signal to the signal amplification device, and cooperate with the host computer to complete the data analysis and data extraction of the system under test;

[0008] The host computer is used to issue trigger instructions to the real-time simulation controller and cooperate with the real-time simulation controller to complete data analysis and data extraction of the system under test;

[0009] A signal amplifying device, the power output end of which is matched and connected with the measuring point, and is used to replace the front-end device of the measured system to send out a power output signal;

[0010] The front-end device of the system under test, the power output terminal of the front-end device of the system under test is matched and connected with the measuring point, and is used for power output for normal operation of the system under test.

[0011] Preferably, the real-time simulation controller includes a data selection module, which is used to store characteristic signals or default signals. The host computer includes a time integrator, which is used to determine the timeout condition of the signal. The time integrator outputs the judgment result to the data selection module, and the data selection module is connected to the signal of the signal amplification device.

[0012] Preferably, the real-time simulation controller further comprises a voltage output module, and the voltage output module is used to convert the characteristic signal or the default signal into a voltage signal.

[0013] Preferably, one or more measuring points are provided, and each measuring point is sequentially connected to a signal acquisition device, a real-time simulation controller, a host computer, and a signal amplifying device, and is electrically connected to a power output end of the signal amplifying device.

[0014] A testing method for a data signal testing device specifically comprises the following steps:

[0015] Step 1: The measuring point is connected to the front-end device signal of the system under test, the data information of the system under test is collected, the data information is converted from electrical quantity to voltage signal and transmitted to the real-time simulation controller through the data transmission line;

[0016] Step 2, the host computer sends a trigger instruction to the real-time simulation controller, extracts the characteristics of the voltage signal in the real-time simulation controller, and converts the voltage signal into a time signal array and stores it in the data selection module of the real-time simulation controller;

[0017] Step 3, the time integrator in the host computer accumulates the running time of the trigger instruction and the running time of the time signal array to obtain the total running time for timeout judgment. If the total running time exceeds the running time of the time signal array, the default signal is directly output; if the total running time is equal to the running time of the time signal array, the trigger instruction is triggered.

[0018] Step 4, trigger judgment is performed on the trigger instruction. If the trigger instruction is judged to be 1, a characteristic signal is output; if the trigger instruction is judged not to be 1, a default signal is output;

[0019] Step 5, replacing the time signal array stored in the data selection module in step 2 with the characteristic signal or default signal in step 3 or 4 above;

[0020] Step 6, the real-time simulation controller converts the characteristic signal or the default signal obtained in step 4 into a voltage signal and transmits it to the signal amplification device;

[0021] Step 7: Replace the front-end device of the system under test with the power output end of the signal amplifying device and connect it to the measuring point to form a data signal testing device.

[0022] Preferably, the trigger time is assigned by the host computer when issuing a trigger instruction. If the trigger instruction is a rising edge, the trigger time is set to zero; if the trigger instruction is not a rising edge, the trigger time is not set to zero, that is, the trigger time is the time preset by the host computer.

[0023] The present invention provides a data signal testing device, which has the following beneficial effects: data is collected from a system under test through a signal acquisition device, and the collected data is analyzed and extracted by a real-time simulation controller in combination with a host computer; and a trigger instruction is issued by the host computer at any time to send out a characteristic signal of the collected data, thereby completing the remote operation and integrated measurement and control of special signal analysis and processing in the control research process. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art are briefly introduced below.

[0025] Figure 1 It is a structural block diagram of the present invention;

[0026] Figure 2 It is a flow chart of the trigger instruction strategy of the present invention;

[0027] Figure 3 is a waveform diagram of a default signal of the present invention;

[0028] Figure 4 It is a waveform diagram of the original characteristic signal of the present invention;

[0029] Figure 5 It is a waveform diagram of the timing signal after the time integrator of the present invention is triggered;

[0030] Figure 6 A waveform diagram of a trigger signal of the present invention;

[0031] Figure 7 It is a signal change diagram of the testing device of the present invention. DETAILED DESCRIPTION

[0032] In order to make the purpose, technical solutions and advantages of the present invention more clear, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention.

[0033] Embodiment 1, as Figure 1 As shown, the data signal testing device includes a system under test, and the end of the system under test is electrically connected to a measuring point;

[0034] A signal acquisition device, electrically connected to the measuring point, for performing power access measurement on the system under test;

[0035] The real-time simulation controller is used to receive the test instructions from the host computer and transmit the characteristic signal or the default signal to the signal amplification device, and cooperate with the host computer to complete the data analysis and data extraction of the system under test;

[0036] The host computer is used to issue trigger instructions to the real-time simulation controller and cooperate with the real-time simulation controller to complete data analysis and data extraction of the system under test;

[0037] A signal amplifying device, the power output end of which is matched and connected with the measuring point, and is used to replace the front-end device of the measured system to send out a power output signal;

[0038] The front-end device of the system under test, the power output terminal of the front-end device of the system under test is matched and connected with the measuring point, and is used for power output for normal operation of the system under test.

[0039] The real-time simulation controller also includes a voltage output module, which is used to convert the characteristic signal or the default signal into a voltage signal. Only by converting the characteristic signal sent by the host computer into a voltage signal can the signal amplification device be driven to complete the control of the characteristic signal and complete the characteristic working condition simulation test.

[0040] Working principle: The signal acquisition device is used to collect dynamic data of the system under test, and the real-time simulation controller is used in combination with the host computer to analyze and extract the collected data; and the host computer issues a trigger command at any time, thereby completing the remote operation and integrated measurement and control of special signal analysis and processing during the control research process.

[0041] When the system is operating normally, the signal acquisition device is connected to the power output end of the front-end equipment of the system under test, and the collected signal is sent to the real-time simulation controller. Data analysis can be performed through the host computer. At this time, the end of the signal amplification device is not connected to the measuring point; when it is necessary to analyze the system under test under characteristic conditions, the host computer sends a trigger instruction to the real-time simulation controller. At this time, the end of the signal amplification device is connected to the measuring point, and the signal amplification device is controlled to replace the front-end equipment of the system under test and the system under test as the power output of the system under test. The working condition to be tested can be used as a trigger instruction to be controlled by the host computer. It is not only simple to operate, but also can realize remote operation.

[0042] Embodiment 2: This embodiment is a preferred technical solution of embodiment 1. The real-time simulation controller includes a data selection module, which is used to store characteristic signals or default signals. When the system under test works normally, the end of the signal amplification device is not connected to the measurement point. The host computer includes a time integrator, which is used to judge the timeout condition of the signal. The time integrator outputs the judgment result to the data selection module, and the data selection module is connected to the signal of the signal amplification device.

[0043] The host computer sends a trigger command to the real-time simulation controller. The signal running time of the trigger command is recorded as T1, and the running time of the signal collected by the signal acquisition device is recorded as T2. The time integrator accumulates T1 and T2 and records it as T3. After the host computer sends a trigger command, the time integrator accumulates T1 and T2, and performs a timeout judgment after obtaining T3.

[0044] If the trigger instruction is a rising edge, T1 is set to zero, and T3 is equal to T2 at this time, and then it is further determined whether the trigger instruction is 1. If the trigger instruction is 1, it means that the trigger instruction is triggered, and the data selection module outputs a characteristic signal; if the trigger instruction is not 1, it means that the trigger instruction is not triggered, and the data selection module outputs a default signal;

[0045] If the trigger instruction is not a rising edge, T1 is not set to zero. At this time, T3 is greater than T2, and the default signal is directly output. This situation exists when the trigger instruction issued by the host computer is wrong. It can protect the system under test and prevent staff from operating it incorrectly or applying working conditions that do not conform to the actual situation to the system under test, which can improve the safety and stability of the entire test device.

[0046] Embodiment 3, as a preferred technical solution of embodiment 1, one or more measuring points are provided, each of which is sequentially connected to a signal acquisition device, a real-time simulation controller, a host computer, and a signal amplification device, and is electrically connected to the power output end of the signal amplification device. By setting multiple measuring points, other characteristics of the system under test can be collected when testing characteristic working conditions, thereby simulating the characteristics of other working conditions.

[0047] Embodiment 4, as Figure 2 As shown, the present invention also discloses a testing method for a data signal testing device, which specifically comprises the following steps:

[0048] Step 1: The measuring point is connected to the front-end device of the system under test by signal, and the data information of the system under test is collected by the signal acquisition device. The signal acquisition device converts the data information from electrical quantity into voltage signal and transmits it to the real-time simulation controller through the data transmission line;

[0049] Step 2, the host computer sends a trigger instruction to the real-time simulation controller, extracts the voltage signal in the real-time simulation controller, and converts the voltage signal into a time signal array and stores it in the data selection module of the real-time simulation controller;

[0050] Step 3, the time integrator in the host computer accumulates the running time of the trigger instruction and the running time of the time signal array to obtain the total running time for timeout judgment. If the total running time exceeds the running time of the time signal array, the default signal is directly output; if the total running time is equal to the running time of the time signal array, the trigger instruction is triggered.

[0051] Step 4, trigger judgment is performed on the trigger instruction. If the trigger instruction is judged to be 1, a characteristic signal is output; if the trigger instruction is judged not to be 1, a default signal is output;

[0052] Step 5, replacing the time signal array stored in the data selection module in step 2 with the characteristic signal or default signal in step 3 or 4 above;

[0053] Step 6, the real-time simulation controller converts the characteristic signal or the default signal obtained in step 4 into a voltage signal and transmits it to the signal amplification device;

[0054] Step 7: Replace the front-end device of the system under test with the power output end of the signal amplifying device and connect it to the measuring point to form a data signal testing device.

[0055] In this embodiment, the trigger time is assigned by the host computer when issuing a trigger instruction. If the trigger instruction is a rising edge, the trigger time is set to zero; if the trigger instruction is not a rising edge, the trigger time is not set to zero, that is, the trigger time is the time pre-set by the host computer.

[0056] Working principle: When the system is operating normally, the signal acquisition device is connected to the power output end of the front-end equipment of the system under test, and the collected signal is sent to the real-time simulation controller. Data analysis can be performed through the host computer. At this time, the end of the signal amplification device is not connected to the measuring point; when it is necessary to analyze the system under test under characteristic conditions, the host computer sends a trigger command to the real-time simulation controller. At this time, the end of the signal amplification device is connected to the measuring point, and the control signal amplification device replaces the front-end equipment of the system under test and the system under test as the power output of the system under test. The working condition to be tested can be used as a trigger command to be controlled by the host computer, which is not only simple to operate, but also remotely operated.

[0057] The host computer sends a trigger command to the real-time simulation controller. The signal running time of the trigger command is recorded as T1, and the running time of the signal collected by the signal acquisition device is recorded as T2. The time integrator accumulates T1 and T2 and records it as T3. After the host computer sends a trigger command, the time integrator accumulates T1 and T2, and performs a timeout judgment after obtaining T3.

[0058] If the trigger instruction is a rising edge, T1 is set to zero, and T3 is equal to T2 at this time, and then it is further determined whether the trigger instruction is 1. If the trigger instruction is 1, it means that the trigger instruction is triggered, and the data selection module outputs a characteristic signal; if the trigger instruction is not 1, it means that the trigger instruction is not triggered, and the data selection module outputs a default signal;

[0059] If the trigger instruction is not a rising edge, T1 is not set to zero. At this time, T3 is greater than T2, and the default signal is directly output. This situation exists when the trigger instruction issued by the host computer is wrong. It can protect the system under test and prevent staff from operating it incorrectly or applying working conditions that do not conform to the actual situation to the system under test, which can improve the safety and stability of the entire test device.

[0060] One or more measuring points can be set, each of which is connected in sequence to a signal acquisition device, a real-time simulation controller, a host computer, and a signal amplification device, and is electrically connected to the power output end of the signal amplification device. By setting multiple measuring points, other characteristics of the system under test can be collected when testing characteristic working conditions, thereby simulating the characteristics of other working conditions.

[0061] like Figures 3 to 7 As shown, the host computer presets the running time T2 of the time signal array to be 3.7s, and the host computer presets the signal running time of the trigger instruction to be at the 5th second. Figure 6 The test device outputs between 0 and 5 seconds as shown. Figure 3 The default signal; at the 5th second, the signal amplifier is connected to the system under test, enters the triggering state, and the time integrator is triggered to output the timing signal Figure 5 As shown; the system outputs the following during the running time of the time array: Figure 4 The characteristic signal shown; after 3.7s, the real-time simulation controller resumes outputting the default signal, and the output signal of the system changes as shown Figure 7 As shown, the characteristic signal can be sent from the real-time simulation controller to the signal amplification device.

[0062] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it; the pattern fillings in the drawings of the present invention do not represent the material of the structure, but only distinguish the structure; although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that the technical solutions described in the aforementioned embodiments can still be modified, or some of the technical features therein can be replaced by equivalents; and these modifications or replacements do not deviate the essence of the corresponding technical solutions from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A testing method for a data signal testing device, characterized in that: The data signal testing device comprises a system under test, wherein an end of the system under test is electrically connected to a measuring point; A signal acquisition device, electrically connected to the measuring point, for performing power access measurement on the system under test; The real-time simulation controller is used to receive the test instructions from the host computer and transmit the characteristic signal or the default signal to the signal amplification device, and cooperate with the host computer to complete the data analysis and data extraction of the system under test; The host computer is used to issue trigger instructions to the real-time simulation controller and cooperate with the real-time simulation controller to complete data analysis and data extraction of the system under test; A signal amplifying device, the power output end of which is matched and connected with the measuring point, and is used to replace the front-end device of the measured system to send out a power output signal; The front-end device of the system under test, the power output terminal of the front-end device of the system under test is matched and connected with the measuring point, and is used for the power output of the normal operation of the system under test; The specific steps include: Step 1: The measuring point is connected to the front-end device of the system under test by signal, and the data information of the system under test is collected by the signal acquisition device. The signal acquisition device converts the data information from electrical quantity into voltage signal and transmits it to the real-time simulation controller through the data transmission line; Step 2, the host computer sends a trigger instruction to the real-time simulation controller, extracts the voltage signal in the real-time simulation controller, and converts the voltage signal into a time signal array and stores it in the data selection module of the real-time simulation controller; Step 3, the time integrator in the host computer accumulates the running time of the trigger instruction and the running time of the time signal array to obtain the total running time for timeout judgment. If the total running time exceeds the running time of the time signal array, the default signal is directly output; if the total running time is equal to the running time of the time signal array, the trigger instruction is triggered. Step 4, trigger judgment is performed on the trigger instruction. If the trigger instruction is judged to be 1, a characteristic signal is output; if the trigger instruction is judged not to be 1, a default signal is output; Step 5, replacing the time signal array stored in the data selection module in step 2 with the characteristic signal or default signal in step 3 or 4 above; Step 6, the real-time simulation controller converts the characteristic signal or the default signal obtained in step 4 into a voltage signal and transmits it to the signal amplification device; Step 7: Replace the front-end device of the system under test with the power output end of the signal amplifying device and connect it to the measuring point to form a data signal testing device.

2. The testing method of the data signal testing device according to claim 1, characterized in that: The real-time simulation controller includes a data selection module, which is used to store characteristic signals or default signals. The host computer includes a time integrator, which is used to determine the timeout condition of the signal. The time integrator outputs the determination result to the data selection module, and the data selection module is connected to the signal amplification device signal.

3. The testing method of the data signal testing device according to claim 2, characterized in that: The real-time simulation controller also includes a voltage output module, and the voltage output module is used to convert the characteristic signal or the default signal into a voltage signal.

4. The testing method of the data signal testing device according to claim 1, characterized in that: There are one or more measuring points, each of which is sequentially connected to a signal acquisition device, a real-time simulation controller, a host computer, and a signal amplifying device, and is electrically connected to a power output end of the signal amplifying device.

5. The testing method of a data signal testing device according to claim 1, characterized in that: The trigger time is assigned by the host computer when it issues a trigger instruction. If the trigger instruction is a rising edge, the trigger time is set to zero; if the trigger instruction is not a rising edge, the trigger time is not set to zero, that is, the trigger time is the time preset by the host computer.

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