TWM605622U - Mixed signal analysis system capable of simultaneously detecting multiple sets of channel signals - Google Patents

Abstract

A mixed signal analysis system that can detect multiple sets of channel signals at the same time. It mainly has a mixed signal logic analysis device that can receive a mixed signal containing both digital and analog, and perform trigger analysis on the mixed signal. The mixed signal logic analysis The device is electrically connected to a multi-channel adapter board, connected to a circuit board to be tested through the multi-channel connection board, to receive mixed signals of multiple channels at the same time, and transmit them to the mixed signal logic analysis device at the same time. After the signal logic analysis device receives the mixed signals of multiple channels, it then analyzes the trigger waveform results of the multiple mixed signals through a signal detection device to generate a test report information for the user to view the test report information and inspect the circuit board to be tested Whether it is abnormal.

Description

Mixed signal analysis system capable of simultaneously detecting multiple sets of channel signals

This creation is used in the measurement field of circuit boards, especially a mixed signal logic analysis device that simultaneously captures a mixed signal of multiple sets of channels through a multi-channel adapter board, and completes the circuit board inspection at the end of a signal capture cycle A working mixed signal analysis system that can simultaneously detect multiple sets of channel signals.

According to the current circuit board design and verification stage, the main electronic components of the power sequence specification must comply with a certain power sequence timing (Timing) too early or too late may cause the circuit to fail to work normally, or, The voltage value and the voltage rise time (Rise time) of the power-on procedure must meet the specifications. The current practice is that the inspector needs to hold the probe of the oscilloscope to measure the circuit to be measured. After completion, record and compare the specification files to see if It meets the specifications. Since the general oscilloscope has at most 8 channels, even if there is a device that can connect the oscilloscope probe to the circuit board to be tested, the inspector does not need to maintain the handheld measurement state for a long time, but the inspector still needs to manually perform the measurement Operate the testing equipment to adjust the parameters and manually check the measurement results after completing the testing and finally write the report. This testing process is quite time-consuming; the current circuit board design of electronic products is extremely complicated. Depending on the testing requirements of the circuit board, the power-on procedure needs to be simultaneously Measure test points with more than 8 channels, plus the number and variety of circuit boards to be tested for each product, and the detection rules are different. This makes the engineers responsible for measurement only have to sample inspections, and cannot fully conduct the required channels. Measurement, this will result in insufficient sampling and omission of the power-on program measurement. If it is expected that all measurement points can be measured reliably, a large amount of manpower is required to implement a measurement project, which is also costly for labor. This caused great pressure. According to this, how to measure all test points at the same time is a problem to be solved.

In view of the above-mentioned problems, this creator is based on years of experience in related industries to research and improve logic analyzers; for this reason, the main purpose of this creation is to provide a simultaneous measurement of multiple channel signals. A mixed signal analysis system that detects signals from multiple channels.

In order to achieve the above-mentioned purpose, the mixed signal analysis system of this creation that can simultaneously detect multiple sets of channel signals mainly has a mixed signal logic analysis device that can receive a mixed signal containing both digital and analog signals, and perform processing on the mixed signal. Trigger analysis, where the mixed signal logic analysis device is electrically connected to a multi-channel adapter board, and is connected to a circuit board to be tested through the multi-channel connecting board to receive mixed signals of multiple channels at the same time and transmit them to the hybrid Signal logic analysis device. Moreover, after the mixed signal logic analysis device receives the mixed signals of multiple channels, it analyzes the trigger waveform results of the multiple mixed signals through a signal detection device to generate a detection report information for the user to view The test report information is used to check whether the circuit board to be tested is abnormal. Based on this, this creation mainly uses the multi-channel adapter board to capture the electronic signals of multiple channels of the circuit board to be tested at the same time. The tester does not need to measure the circuit in batches. Furthermore, this creation sends all the detection waveform data to the signal detection device for analysis to automatically generate the detection report information. The detection personnel no longer need to manually compare the detection specifications to ensure that all measurement points of the circuit board can be tested. Can greatly shorten the testing time and the testing manpower invested.

In order for your reviewer to have a clear understanding of the purpose, technical features and effects of this creation, please refer to the following instructions with illustrations.

Please refer to "Figure 1". The figure shows the composition diagram (1) of the creation. As shown in the figure, the mixed signal analysis system 10 of this creation is mainly composed of a mixed signal logic analysis device 101 and a multi-channel converter. The connection board 102 is composed of a signal detection device 103. In use, the mixed signal logic analysis device 101 is connected to the multi-channel adapter board 102, so that the mixed signal logic analysis device 101 can be captured through the multi-channel adapter board 102 A mixed signal with multiple channels, where the mixed signal refers to a mixed signal that includes both a digital part and an analog part in a single channel. The multi-channel transfer board 102 can be coupled to a circuit board to be tested (not shown in this figure). (Shown), when the circuit board to be tested is powered on (that is, the power-on procedure), the mixed signal of multiple channels is captured from the circuit board to be tested, so that the mixed signal logic analysis device 101 can capture the mixed signal of multiple channels at the same time To determine the trigger waveform, one mixed-signal logic analysis device 101 is used with a multi-channel adapter board 102, or a mixed-signal logic analysis device 101 can be used with multiple multi-channel adapter boards 102, but not limited to this , First Chen Ming, furthermore, the mixed signal logic analysis device 101 is also connected to the signal detection device 103, so that the signal detection device 103 can receive the trigger waveform, and after the waveform and the detection rule are compared with each other, a detection report is generated Information for inspectors to determine whether the circuit board to be inspected is abnormal.

Please refer to "Figure 2" again. The figure shown is the composition diagram (1) of the creation. Please refer to "Figure 1" for the combination. As shown in the figure, the mixed signal logic analysis device 101 of this creation includes a signal processing The module 1011 has another signal input channel 1012, a comparator module 1013, an analog signal conversion module 1014, and an information transmission module 1015 to complete information connection with the signal processing module 1011; the signal processing module 1011 It can process 8-16 channels of input signals at the same time, and after the signal processing module 1011 receives at least one mixed signal transmitted by the circuit board to be tested, it can generate at least one detected waveform information according to the trigger result of the mixed signal. The signal processing module The group 1011 can be a Field Programmable Gate Array (FPGA), where the mixed signal is an electronic signal with both digital and analog, and the mixed signal is a signal below 200MHz; the signal The input channel 1012 completes the information connection with the signal processing module 1011. The signal input channel 1012 is coupled to the multi-channel adapter board 102, so that the signal input channel 1012 can be electrically connected to several channels at the same time, and then receive and mix from each channel Signal; the comparator module 1013 can determine the high and low potentials of the digital signal, those higher than the reference voltage are high potentials, and those lower than the reference voltage are low potentials, forming a digital waveform between the high and low potentials; The analog signal conversion module 1014 can convert an analog signal into a digital signal, which can be an analog-to-digital converter (ADC); the information transmission module 1015 can trigger the analog signal and The digital signal trigger information is sent to the signal detection device 103, which may be a universal serial bus (USB); in addition, the multi-channel adapter board 102 has a first connection portion 1021 and a second connection Part 1022, wherein the first connecting part 1021 is electrically connected to the circuit board to be tested, and can capture mixed signals of the circuit board to be tested. Furthermore, the first connecting part 1021 has 16 signal channels for Receiving mixed signals of at most 16 channels, the second connecting portion 1022 is electrically connected to the mixed signal logic analysis device 101 to transmit the mixed signal of the circuit board to be tested to the mixed signal logic analysis device 101. The connecting portion 1022 can be used to connect a flat cable 1023 to the mixed signal logic analysis device 101 to achieve the purpose of electrical connection.

Please refer to "Figure 3". The figure shows the implementation diagram (1) of the creation. As shown in the figure, when the user wants to test a circuit board 20 to be tested, the user first installs the multi-channel adapter board The first connection portion 1021 of 102 is electrically connected to at least one connection point 201 of the circuit board 20 to be tested, and the second connection portion 1022 of the multi-channel adapter board 102 is electrically connected to the mixed signal logic analysis device 101, so that the mixing The signal logic analysis device 101 and the circuit board to be tested 20 can form an information connection state through the multi-channel adapter board 102. In addition, the mixed signal logic analysis device 101 is also electrically connected with a signal detection device 103 for the signal detection device 103 Capture the mixed signal processed by the mixed signal logic analysis device 101; when the circuit board 20 to be tested is in the power sequence, at least one mixed signal S1 of the circuit board 20 to be tested is transmitted to the mixed signal logic through the connection point 201 The analysis device 101, wherein each connection point 201 is electrically connected to a plurality of measurement points of the circuit board 20 to be tested. During the power-on procedure, the mixed signal generated by the measurement points will pass through the connection point 201 Send it out.

Please refer to "Figure 4". The figure shows the implementation diagram (2) of the creation. As shown in the figure, when the mixed signal S1 is transmitted to the mixed signal logic analysis device 101 via the multi-channel adapter board 102, the mixed signal logic analysis The input channel 1012 of the device 101 can receive the mixed signal S1, and the mixed signal S1 can be further shunted to an analog signal path PA and a digital signal path PD, so that the mixed signal logic analysis device 101 can separately perform different paths (PA, PD) The signal is processed.

Please refer to "Figure 5" again. The figure shows the implementation schematic (3) of the creation. As shown in the figure, when the mixed signal S1 is shunted to the analog signal path PA, the analog signal conversion module 1014 captures it via the analog signal path PA Take the mixed signal S1, and convert the analog signal part of the mixed signal S1 into a first digital signal S2, where the analog signal is converted into a digital signal, which is the processing process of the analog-to-digital converter (ADC), which will not be repeated here. After the processing module 1011 receives the first digital signal S2, the signal processing module 1011 can trigger the first digital signal S2, and generate an analog signal trigger information D1 according to the trigger result; when the mixed signal S1 is shunted to the digital signal path PD After the comparator module 1013 captures the mixed signal S1, the digital signal components of the mixed signal S1 are processed by the comparator module 1013, where the comparator module 1013 can perform processing based on the preset trigger level and trigger condition, And generate a second digital signal S2' according to the processing result. After the signal processing module 1011 receives the second digital signal S2', the signal processing module 1011 can perform the trigger operation on the second digital signal S2', and generate a digital signal according to the trigger result. Signal trigger information D2; In addition, when a signal capture cycle ends, the signal processing module 1011 can send analog signal trigger information D1 and digital signal trigger information D2 to the signal detection device 103, and the signal detection device 103 captures the analog signal After the trigger information D1 and the digital signal trigger information D2, the signal detection device 103 can compare the detection rules of each trigger information (D1, D2), and finally generate a detection report information based on the detection comparison result for the user to check and detect Report information to confirm whether the circuit board 20 to be tested (not shown in this figure) is abnormal for debugging.

Please refer to "Figure 6". The figure shows another embodiment of the creation. As shown in the figure, when the number of electrical contacts of the circuit board 20 to be tested exceeds 16 or more, in other words, the circuit board 20 to be tested has 16 With more than one signal channel, the user can add a multi-mix signal logic analysis device (101, 101') and a multi-channel adapter board (102, 102') to electrically connect the electrical contacts of the circuit board 20 to be tested After each multi-channel adapter board (102, 102'), each mixed signal logic analysis device (101, 101') can receive the mixed signal of more than 16 signal channels, and ensure that the signal detection device 103 can simultaneously receive huge mixed signals The number of signals, and the inspection operation of the circuit board 20 to be inspected can be completed in one signal acquisition cycle.

In summary, the mixed signal analysis system of this creation that can detect multiple sets of channel signals at the same time is mainly composed of a mixed signal logic analysis device, a multi-channel adapter board and a signal detection device. The connection board can be connected to multiple measurement points of a circuit board to be tested at the same time. The multi-channel adapter board provides multiple signal channels, so that the mixed signal logic analysis device can receive a mixed signal of multiple channels at the same time, and the waveform is triggered by the signal After processing, the signal detection device finally generates a test report information based on the signal waveform, so that the tester can view the test report information and judge whether there is an abnormality in the circuit board to be tested. According to this, after the implementation of this creation, it can indeed achieve The purpose of providing a mixed signal analysis system capable of simultaneously measuring multiple channel signals and capable of simultaneously detecting multiple sets of channel signals.

The above are only the preferred embodiments of this creation, and are not intended to limit the scope of implementation of this creation; anyone who is familiar with this technique can make equal changes and modifications without departing from the spirit and scope of this creation. Should be covered in the scope of the patent of this creation.

In summary, this creation has patent requirements such as "industrial usability", "novelty", and "progressiveness"; the applicant filed an application for a new patent in accordance with the Patent Law.

10: Mixed signal analysis system 101: Mixed signal logic analysis device 102: Multi-channel adapter board 101’: Mixed signal logic analysis device 102’: Multi-channel adapter board 1011: signal processing module 1021: The first connection part 1012: signal input channel 1022: The second connecting part 1013: Comparator module 1023: Connection cable 1014: Analog signal conversion module 1015: Information Transmission Module 103: Signal detection device 20: Circuit board to be tested 201: Connection point PA: analog signal path PD: digital signal path D1: Analog signal trigger information D2: Digital signal trigger information S1: Mixed signal S2: The first digital signal S2’: The second digital signal

Figure 1 is a schematic diagram of the composition of this creation (1). Figure 2 is a schematic diagram of the composition of this creation (2). Figure 3 is a schematic diagram of the implementation of this creation (1). Figure 4 is a schematic diagram of the implementation of this creation (2). Figure 5 is a schematic diagram of the implementation of this creation (3). Figure 6 is another embodiment of this creation.

10: Mixed signal analysis system

101: Mixed signal logic analysis device

102: Multi-channel adapter board

1011: signal processing module

1021: The first connection part

1012: signal input channel

1022: The second connecting part

1013: Comparator module

1023: Connection cable

1014: Analog signal conversion module

1015: Information Transmission Module

Claims (7)

A mixed signal analysis system capable of simultaneously detecting multiple sets of channel signals for detecting a circuit board to be tested, which includes: A multi-channel adapter board electrically connected to the circuit board to be tested, and the multi-channel adapter board captures a mixed signal of several channels of the circuit board to be tested; A mixed signal logic analysis device is electrically connected with the multi-channel adapter board to capture the mixed signal. The mixed signal logic analysis device generates an analog signal trigger information and a digital signal trigger according to the result of each of the mixed signal triggers Information; and A signal detection device completes information connection with the mixed signal logic analysis device, and the signal detection device analyzes the analog signal trigger information and the digital signal trigger information to generate a detection report information. The mixed signal analysis system capable of simultaneously detecting multiple sets of channel signals as described in claim 1, wherein the multi-channel adapter board has a first connection portion, and an electrical property between the first connection portion and the circuit board to be detected The contact completes the electrical connection. The mixed signal analysis system capable of simultaneously detecting signals of multiple groups of channels as described in claim 2, wherein the first connection part has 16 signal channels. The mixed signal analysis system capable of simultaneously detecting multiple sets of channel signals as described in claim 1, wherein the multi-channel adapter board has a second connection part, and the second connection part is connected to the mixed signal logic by a cable The analysis device completes the information connection. The mixed signal analysis system capable of simultaneously detecting signals of multiple channels as described in claim 1, wherein the mixed signal logic analysis device uses a signal input channel to complete information connection with the multi-channel adapter board, and the signal input channel includes a Analog signal path and a digital signal path. The mixed signal analysis system capable of detecting multiple sets of channel signals at the same time as described in claim 1, wherein the circuit board to be tested is in the power-on procedure, and in a signal acquisition cycle, the mixed signal logic analysis device captures the to-be-tested circuit board The mixed signal of the circuit board. The mixed signal analysis system capable of simultaneously detecting signals of multiple groups of channels as described in claim 1, wherein the circuit board to be detected is electrically connected to the multi-channel adapter board through each of the multi-channel adapter boards. Send the mixed signal.

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