Power supply detection device

Abstract

The utility model provides a power supply detection device, which comprises a clock generation module, a clock synchronization control module, a detection power supply interface module, an RS485 communication module, a master control module and a virtual oscilloscope, and is characterized in that the master control module sends a clock synchronization signal and a frequency multiplication control signal to the clock synchronization control module; the clock synchronization control module generates a sampling clock signal according to the clock synchronization signal and the frequency multiplication control signal; the detection power supply interface module collects a power supply ripple signal set of a target power supply set according to a sampling clock signal and performs analog-to-digital conversion on the power supply ripple signal set to obtain a digitized power supply ripple signal set, and the virtual oscilloscope generates a first power supply waveform image according to the digitized power supply ripple signal set. According to the utility model, a clock synchronization mode is adopted to carry out synchronous multi-time sampling on a target power supply set, and the problems of low precision and poor real-time performance of a traditional power supply ripple detection method can be solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to power module ripple detection field especially relates to a power detection device. BACKGROUND

[0002] With the rapid development of modern electronic technology, as one of the core components of electronic equipment, the stability and reliability of power module are more and more concerned by people. In the performance index of power module, power ripple is an important parameter, which reflects the fluctuation of power module output voltage, and has a direct influence on the stability and precision of electronic equipment. The traditional power ripple detection method usually adopts analog oscilloscope to carry out signal acquisition and analysis, but this method has problems such as low precision and poor real-time performance, and cannot meet the high requirements of modern electronic equipment on the performance of power module. Therefore, it is particularly important to develop a high-precision and real-time power module ripple detection device. UTILITY MODEL CONTENTS

[0003] Therefore, the utility model provides a kind of power detection device, and target power set is synchronously sampled using clock synchronization mode, and the problem of low precision and poor real-time performance of traditional power ripple detection method can be solved.

[0004] The utility model embodiment provides a kind of power detection device, and the device includes: a kind of power detection device, including: clock generation module, clock synchronization control module, detection power interface module, RS485 communication module, main control module, virtual oscilloscope;

[0005] Clock synchronization control module includes two and two or more clock synchronization control units;

[0006] Clock generation module is used to send reference clock signal to clock synchronization control module;Wherein, reference clock signal is derived from clock generation module and external clock source;

[0007] Main control module is used to send clock synchronization signal and frequency multiplication control signal to clock synchronization control module;Wherein, clock synchronization signal synchronizes the clock signal of each clock synchronization control unit, and frequency multiplication control signal controls the clock signal output frequency of each clock synchronization control unit;

[0008] Clock synchronization control module is used to generate sampling clock signal according to clock synchronization signal and frequency multiplication control signal, and send sampling clock signal to detection power interface module;

[0009] Detection power interface module is used to collect the power ripple signal set of target power set according to sampling clock signal and carries out analog-digital conversion to the power ripple signal set to obtain the digitized power ripple signal set, and then sends the digitized power ripple signal set to RS485 communication module.

[0010] RS485 communication module, for receiving the set of digitized power supply ripple signals and sending the set of digitized power supply ripple signals to the main control module, and the main control module sends the set of digitized power supply ripple signals to the virtual oscilloscope;

[0011] The virtual oscilloscope is used to generate a first power supply waveform image according to the set of digitized power supply ripple signals.

[0012] Optionally, the device further comprises a display screen, which is used to receive the set of digitized power supply ripple signals sent by the main control module, and generate a second power supply waveform image according to the set of digitized power supply ripple signals.

[0013] Optionally, the device further comprises a power supply module, which is used to supply power for the clock generation module, the clock synchronization control module, the detection power supply interface module, the RS485 communication module, the main control module and the display screen.

[0014] Optionally, the main control module comprises a microprocessor and a USART serial communication unit.

[0015] The microprocessor is used to send a clock synchronization signal and a frequency multiplication control signal to the clock synchronization control module, and is also used to receive the set of digitized power supply ripple signals sent by the RS485 communication module, and then send the set of digitized power supply ripple signals to the virtual oscilloscope through the USART serial communication unit.

[0016] Optionally, the clock generation module comprises an internal enabled clock source, an external clock interface unit and a multi-path clock generation unit.

[0017] The internal enabled clock source is used to control the opening of the internal reference clock signal by setting a high level and control the closing of the internal reference clock signal by setting a low level, thereby providing a reference clock signal for the multi-path clock generation unit.

[0018] The external clock interface unit is used to receive an external reference clock signal sent by an external clock source and input the external reference clock signal to the multi-path clock generation unit to provide a reference clock signal.

[0019] The multi-path clock generation unit is used to convert a single-path internal reference clock signal and a single-path external reference clock into a multi-path reference clock signal, and send the reference clock signal to the clock synchronization control module; wherein the internal enabled clock source and the external clock source cannot be opened at the same time.

[0020] Optionally, the detection power supply interface module comprises a 1st signal processing unit, a 2nd signal processing unit,..., an nth signal processing unit, a 1st analog-to-digital conversion unit, a 2nd analog-to-digital conversion unit,..., and an nth analog-to-digital conversion unit.

[0021] The first signal processing unit, the second signal processing unit,..., and the nth signal processing unit are used for pre-processing the power supply ripple signal set in a coupling, polarity transformation, and impedance transformation mode.

[0022] The first analog-to-digital conversion unit, the second analog-to-digital conversion unit,..., and the nth analog-to-digital conversion unit are used for collecting the power supply ripple signal set of the target power supply set according to the sampling clock signal, performing analog-to-digital conversion on the power supply ripple signal set to obtain a digitized power supply ripple signal set, and sending the digitized power supply ripple signal set to the RS485 communication module.

[0023] Compared with the prior art, the power supply detection device has the following beneficial effects:

[0024] The utility model provides a kind of power supply detection device, comprising: clock generation module, clock synchronization control module, detection power interface module, RS485 communication module, main control module, virtual oscilloscope, main control module sends clock synchronization signal and frequency multiplication control signal to clock synchronization control module, clock synchronization control module generates sampling clock signal according to clock synchronization signal and frequency multiplication control signal;Detection power interface module collects the power supply ripple signal set of target power supply set according to sampling clock signal and carries out analog-digital conversion on the power supply ripple signal set to obtain digitized power supply ripple signal set, and virtual oscilloscope generates first power supply waveform image according to digitized power supply ripple signal set.The utility model uses clock synchronization mode to carry out synchronous multiple sampling to target power supply set, can solve the problem of low precision and poor real-time performance of traditional power supply ripple detection method. BRIEF DESCRIPTION OF DRAWINGS

[0025] In order to more clearly illustrate the technical solutions in the embodiments of the utility model, the following will briefly introduce the drawings needed to be used in the embodiments or prior art description. Obviously, the drawings in the following description are only some embodiments of the utility model, and other drawings can be obtained by those skilled in the art without creative labor.

[0026] Figure 1 It is a structure schematic view of a power supply detection device provided by the embodiments of the utility model;

[0027] Figure 2 It is a structure schematic view of another power supply detection device provided by the embodiments of the utility model;

[0028] Figure 3 It is a circuit schematic view of a clock synchronization control unit provided by the embodiments of the utility model;

[0029] Figure 4 It is a structure schematic view of main control module provided by the embodiments of the utility model;

[0030] Figure 5 is a structural schematic diagram of a clock generation module provided by the embodiment of the present application;

[0031] Figure 6 is a circuit schematic diagram of the clock generation module provided by the embodiment of the present application;

[0032] Figure 7 is a structural schematic diagram of a detection power interface module provided by the embodiment of the present application. DETAILED DESCRIPTION

[0033] In the following description, for the purpose of explanation and not limitation, specific details are set forth, such as particular system configurations, techniques, etc., in order to provide a thorough understanding of the embodiments of the present application. However, it will be apparent to those skilled in the art that the present application can be practiced in other embodiments that depart from these specific details. In other instances, detailed descriptions of well-known devices are omitted so as not to obscure the description of the present application with unnecessary detail.

[0034] In order to make the purpose, technical scheme and advantages of the present application clearer, the following will be described by specific embodiments in conjunction with the drawings.

[0035] Embodiment 1

[0036] Please refer to the accompanying drawings Figure 1 , the accompanying drawings Figure 2 and the accompanying drawings Figure 3 , as a power detection device 10 provided by the present application, the device comprises: a clock generation module 11, a clock synchronization control module 13, a detection power interface module 14, an RS485 communication module 15, a master control module 12, a virtual oscilloscope 16;

[0037] The clock synchronization control module 13 comprises two or more clock synchronization control units;

[0038] The clock generation module 11 is used for sending a reference clock signal to the clock synchronization control module 13; wherein the reference clock signal is derived from the clock generation module 11 and an external clock source;

[0039] The master control module 12 is used for sending a clock synchronization signal and a frequency multiplication control signal to the clock synchronization control module 13; wherein the clock synchronization signal synchronizes the clock signals of each clock synchronization control unit, and the frequency multiplication control signal controls the output frequency of the clock signals of each clock synchronization control unit;

[0040] The clock synchronization control module 13 is used for generating a sampling clock signal according to the clock synchronization signal and the frequency multiplication control signal, and sending the sampling clock signal to the detection power interface module 14;

[0041] The detection power interface module 14 is used for collecting a power ripple signal set of the target power set according to the sampling clock signal and performing analog-digital conversion on the power ripple signal set to obtain a digitized power ripple signal set, and then sending the digitized power ripple signal set to the RS485 communication module 15.

[0042] The RS485 communication module 15 is used for receiving the digitized power ripple signal set and sending the digitized power ripple signal set to the main control module 12, and the main control module 12 sends the digitized power ripple signal set to the virtual oscilloscope 16.

[0043] The virtual oscilloscope 16 is used for generating a first power waveform image according to the digitized power ripple signal set.

[0044] Optionally, the device further comprises a display screen 17, which is used for receiving the digitized power ripple signal set sent by the main control module 12 and generating a second power waveform image according to the digitized power ripple signal set.

[0045] Optionally, the device further comprises a power supply module 18, which is used for supplying power for the clock generation module 11, the clock synchronization control module 13, the detection power interface module 14, the RS485 communication module 15, the main control module 12 and the display screen 17.

[0046] In the embodiment, the working process of the power detection device 10 is as follows:

[0047] In the first step, the clock generation module 11 continuously sends a reference clock signal to the clock synchronization control module 13.

[0048] In the second step, when each clock synchronization control unit in the clock synchronization control module 13 receives the clock synchronization signal and the frequency multiplication control signal sent by the main control module 12, a sampling clock signal is generated and sent to the detection power interface module 14. The sampling frequency of the frequency multiplication control signal is an integer multiple of the reference sampling frequency, such as 1, 2, 3,..., n.

[0049] In the third step, when the detection power interface module 14 receives the sampling clock signal, it starts to synchronously sample a single power or multiple powers of the target power set multiple times to obtain a power ripple signal set, and at the same time, performs analog-digital conversion on the power ripple signal set to obtain a digitized power ripple signal set. Then the detection power interface module 14 sends the digitized power ripple signal set to the RS485 communication module.

[0050] In the fourth step, the RS485 communication module 15 sends the digitized power ripple signal to the main control module. Since the RS485 communication module 15 transmits a differential voltage signal, it can support long-distance transmission while ensuring the accuracy of the transmitted signal.

[0051] In the fifth step, the main control module 12 sends the digitized power supply ripple signals to the virtual oscilloscope 16, and the virtual oscilloscope 16 generates a first power supply waveform image according to the digitized power supply ripple signal set, so that the power supply ripple signals of a single power supply or multiple power supplies can be imaged on the virtual oscilloscope 16, and the real-time conditions of the target power supply set can be observed synchronously, and the accuracy and stability of the collected data are ensured.

[0052] Compared with the prior art, the utility model has the advantages of:

[0053] The utility model provides a kind of power detection device 10, comprising: clock generation module 11, clock synchronization control module 13, detection power interface module 14, RS485 communication module 15, main control module 12, virtual oscilloscope 16, main control module 12 sends clock synchronization signal and frequency multiplication control signal to clock synchronization control module 13, and clock synchronization control module 13 generates sampling clock signal according to clock synchronization signal and frequency multiplication control signal;Detection power interface module 14 collects target power supply set power supply ripple signal set according to sampling clock signal and carries out analog-digital conversion to obtain digitized power supply ripple signal set, and virtual oscilloscope 16 generates first power supply waveform image according to digitized power supply ripple signal set.The utility model uses clock synchronization mode to carry out synchronous multiple sampling to target power supply set, can solve the problem of traditional power supply ripple detection method precision is not high, real-time is poor.

[0054] Example 2

[0055] Please refer to the attached Figure 1 and attached Figure 4 The utility model embodiment provides a kind of power detection device 10, and the device includes: clock generation module 11, clock synchronization control module 13, detection power interface module 14, RS485 communication module 15, main control module 12, virtual oscilloscope 16;

[0056] Clock synchronization control module 13 includes two and more than two clock synchronization control units;

[0057] Clock generation module 11 is used to send reference clock signal to clock synchronization control module 13;Wherein, reference clock signal is derived from clock generation module 11 and external clock source;

[0058] Main control module 12 is used to send clock synchronization signal and frequency multiplication control signal to clock synchronization control module 13;Wherein, clock synchronization signal synchronizes the clock signal of each clock synchronization control unit, and frequency multiplication control signal controls the clock signal output frequency of each clock synchronization control unit;

[0059] The clock synchronization control module 13 is configured to generate a sampling clock signal according to the clock synchronization signal and the frequency multiplication control signal, and send the sampling clock signal to the detection power supply interface module 14.

[0060] The detection power supply interface module 14 is configured to collect a power supply ripple signal set of a target power supply set according to the sampling clock signal, perform analog-to-digital conversion on the power supply ripple signal set to obtain a digitalized power supply ripple signal set, and send the digitalized power supply ripple signal set to the RS485 communication module 15.

[0061] The RS485 communication module 15 is configured to receive the digitalized power supply ripple signal set and send the digitalized power supply ripple signal set to the main control module 12, and the main control module 12 sends the digitalized power supply ripple signal set to the virtual oscilloscope 16.

[0062] The virtual oscilloscope 16 is configured to generate a first power supply waveform image according to the digitalized power supply ripple signal set.

[0063] Optionally, the main control module 12 comprises a microprocessor 121 and a USART serial communication unit 122.

[0064] The microprocessor 121 is configured to send the clock synchronization signal and the frequency multiplication control signal to the clock synchronization control module 13, and further configured to receive the digitalized power supply ripple signal set sent by the RS485 communication module 15, and send the digitalized power supply ripple signal set to the virtual oscilloscope 16 through the USART serial communication unit 122.

[0065] In the embodiment, the virtual oscilloscope 16 is mostly a computer PC, an industrial computer or a mobile phone terminal, and the USART serial communication unit 122 can realize signal transmission between the microprocessor 121 and the virtual oscilloscope 16.

[0066] Embodiment 3

[0067] Please refer to the accompanying drawings Figure 1 , the accompanying drawings Figure 5 , the accompanying drawings Figure 6 and the accompanying drawings Figure 7 , the utility model embodiment provides a kind of power supply detection device 10, and the device includes: clock generation module 11, clock synchronization control module 13, detection power supply interface module 14, RS485 communication module 15, main control module 12, virtual oscilloscope 16;

[0068] The clock synchronization control module 13 comprises two or more clock synchronization control units.

[0069] The clock generation module 11 is configured to send a reference clock signal to the clock synchronization control module 13, wherein the reference clock signal is derived from the clock generation module 11 and an external clock source.

[0070] The main control module 12 is configured to send a clock synchronization signal and a frequency multiplication control signal to the clock synchronization control module 13; wherein the clock synchronization signal synchronizes the clock signals of each clock synchronization control unit, and the frequency multiplication control signal controls the output frequency of the clock signals of each clock synchronization control unit.

[0071] The clock synchronization control module 13 is configured to generate a sampling clock signal according to the clock synchronization signal and the frequency multiplication control signal, and send the sampling clock signal to the detection power interface module 14.

[0072] The detection power interface module 14 is configured to collect a power ripple signal set of a target power set according to the sampling clock signal, and perform analog-to-digital conversion on the power ripple signal set to obtain a digitalized power ripple signal set, and then send the digitalized power ripple signal set to the RS485 communication module 15.

[0073] The RS485 communication module 15 is configured to receive the digitalized power ripple signal set and send the digitalized power ripple signal set to the main control module 12, and the main control module 12 sends the digitalized power ripple signal set to the virtual oscilloscope 16.

[0074] The virtual oscilloscope 16 is configured to generate a first power waveform image according to the digitalized power ripple signal set.

[0075] Optionally, the clock generation module 11 comprises an internal enabled clock source 111, an external clock interface unit 112, and a multi-path clock generation unit 113.

[0076] The internal enabled clock source 111 is configured to control the opening of an internal reference clock signal by setting a high level, and control the closing of the internal reference clock signal by setting a low level, thereby providing a reference clock signal for the multi-path clock generation unit 113.

[0077] The external clock interface unit 112 is configured to receive an external reference clock signal emitted by an external clock source, and input the external reference clock signal to the multi-path clock generation unit 113 to provide a reference clock signal.

[0078] The multi-path clock generation unit 113 is configured to convert a single-path internal reference clock signal and a single-path external reference clock signal into a multi-path reference clock signal, and send the reference clock signal to the clock synchronization control module 13; wherein the internal enabled clock source 111 and the external clock source cannot be started at the same time.

[0079] In the embodiment, when the internal enable clock source 111 sets a high level trigger, the internal reference clock signal is turned on, the internal enable clock source 111 sends the internal reference clock signal to the multi-clock generating unit 113, and the multi-clock generating unit 113 sends the reference clock signal to the clock synchronization control module 13; when the internal enable clock source 111 sets a low level trigger, the internal reference clock signal is turned off, the external clock source sends the external reference clock signal to the multi-clock generating unit 113, and the multi-clock generating unit 113 sends the reference clock signal to the clock synchronization control module 13.

[0080] Optionally, the detection power interface module 14 comprises: a first signal processing unit, a second signal processing unit,..., an nth signal processing unit, a first analog-digital conversion unit, a second analog-digital conversion unit,..., an nth analog-digital conversion unit.

[0081] The first signal processing unit, the second signal processing unit,..., and the nth signal processing unit are configured to pre-process the power ripple signal set through coupling, polarity conversion, and impedance conversion.

[0082] The first analog-digital conversion unit, the second analog-digital conversion unit,..., and the nth analog-digital conversion unit are configured to collect the power ripple signal set of the target power set according to a sampling clock signal, perform analog-digital conversion on the power ripple signal set to obtain a digitized power ripple signal set, and send the digitized power ripple signal set to the RS485 communication module 15.

[0083] In the embodiment, the power ripple signal set is easily disturbed by harmonic signals, and thus the first signal processing unit, the second signal processing unit,..., and the nth signal processing unit are configured to pre-process the power ripple signal set through coupling, polarity conversion, and impedance conversion to ensure that the sampling process is not disturbed by the harmonic signals.

[0084] In the embodiment, the first analog-digital conversion unit, the second analog-digital conversion unit,..., and the nth analog-digital conversion unit can synchronously sample a single power multiple times or synchronously sample multiple powers multiple times.

[0085] The above embodiments are only used to illustrate the technical solutions of the present application, but not limit the present application; although the present application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that the technical solutions recorded in the foregoing embodiments can be modified, or some technical features can be replaced equivalently; the modifications or replacements do not change the essence of the corresponding technical solutions, and should be included in the protection scope of the present application.

Claims

1. A power supply detection device, characterized in that, include: Clock generation module, main control module, clock synchronization control module, detection power interface module, RS485 communication module, virtual oscilloscope; The clock synchronization control module includes two or more clock synchronization control units; The clock generation module is used to send a reference clock signal to the clock synchronization control module; the reference clock signal originates from the clock generation module and an external clock source. The main control module is used to send clock synchronization signals and frequency multiplication control signals to the clock synchronization control module; the clock synchronization signal synchronizes the clock signals of each clock synchronization control unit, and the frequency multiplication control signal controls the output frequency of the clock signals of each clock synchronization control unit. The clock synchronization control module is used to generate a sampling clock signal based on the clock synchronization signal and the frequency multiplication control signal, and send the sampling clock signal to the detection power interface module. The power interface module is used to collect the power ripple signal set of the target power set according to the sampling clock signal, perform analog-to-digital conversion on the power ripple signal set to obtain the digitized power ripple signal set, and then send the digitized power ripple signal set to the RS485 communication module. The RS485 communication module is used to receive the digitized power ripple signal set and send the digitized power ripple signal set to the main control module, which then sends the digitized power ripple signal set to the virtual oscilloscope. A virtual oscilloscope is used to generate a first power waveform image based on a set of digitized power ripple signals.

2. The power supply detection device as described in claim 1, characterized in that, It also includes a display screen for receiving the digitized power ripple signal set sent by the main control module, and then generating a second power waveform image based on the digitized power ripple signal set.

3. The power supply detection device as described in claim 2, characterized in that, It also includes a power supply module for supplying power to the clock generation module, the clock synchronization control module, the detection power interface module, the RS485 communication module, the main control module, and the display screen.

4. The power supply detection device as described in claim 1, characterized in that, The main control module includes: a microprocessor and a USART serial communication unit; The microprocessor is used to send the clock synchronization signal and the frequency multiplication control signal to the clock synchronization control module; it is also used to receive the digitized power ripple signal set sent by the RS485 communication module, and then send the digitized power ripple signal set to the virtual oscilloscope through the USART serial communication unit.

5. The power supply detection device as described in claim 1, characterized in that, The clock generation module includes: an internal enable clock source, an external clock interface unit, and a multi-channel clock generation unit; An internal enable clock source is used to control the internal reference clock signal to be turned on by setting a high level and to control the internal reference clock signal to be turned off by setting a low level, thereby providing the reference clock signal to the multi-channel clock generation unit. An external clock interface unit is used to receive an external reference clock signal from the external clock source and input the external reference clock signal to a multi-channel clock generation unit to provide the reference clock signal. A multi-channel clock generation unit is used to convert a single internal reference clock signal and a single external reference clock signal into multiple reference clock signals, and send the reference clock signals to the clock synchronization control module; wherein, the internal enable clock source and the external clock source cannot be enabled simultaneously.

6. The power supply detection device as described in claim 1, characterized in that, The detection power interface module includes: a first signal processing unit, a second signal processing unit, ..., an nth signal processing unit, a first analog-to-digital conversion unit, a second analog-to-digital conversion unit, ..., an nth analog-to-digital conversion unit; The first signal processing unit, the second signal processing unit, ..., the nth signal processing unit are used to preprocess the power supply ripple signal set through coupling, polarity transformation and impedance transformation. The first analog-to-digital conversion unit, the second analog-to-digital conversion unit, ..., the nth analog-to-digital conversion unit are used to acquire the power ripple signal set of the target power supply set according to the sampling clock signal, perform analog-to-digital conversion on the power ripple signal set to obtain the digitized power ripple signal set, and then send the digitized power ripple signal set to the RS485 communication module.

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