Modularization-based multifunctional acquisition instrument

Abstract

The utility model provides a modularization-based multifunctional acquisition instrument, which comprises a signal measurement module group consisting of a plurality of signal measurement modules, a multi-core analog-to-digital converter, a logic control computing power module, a main computing power module, a wireless wide area network module and a wired local area network module, the signal measuring module group is used for measuring four dynamic signals of voltage, current, IEPE and dynamic strain so as to realize conditioning of the four dynamic signals of voltage, current, IEPE and dynamic strain and form channel signals, the multi-core analog-to-digital converter is used for receiving a plurality of channel signals and carrying out synchronous sampling, and the logic control computing power module is used for carrying out gain control on the signal measuring module group and controlling the time sequence of the multi-core analog-to-digital converter. The main computing power module is used for receiving data sent by the logic control computing power module and interacting with the data, and the wireless wide area network module and the wired local area network module are used for switching working modes according to interaction data of the main computing power module. The multifunctional acquisition instrument based on modularization provided by the utility model has multiple functions and high efficiency.

Description

TECHNICAL FIELD

[0001] The utility model relates to engineering survey technology field, concretely relates to a kind of multifunctional acquisition instrument based on modularization. BACKGROUND

[0002] Dynamic data acquisition instrument is a kind of equipment that can collect and monitor sensor data in real time, widely used in industry, scientific research, medical treatment and environmental monitoring and other fields. Its main features include high-speed sampling, high precision, real-time and multi-channel synchronous measurement. In addition, with the development of edge computing technology, many devices support remote monitoring and data analysis functions, making management and decision-making more efficient.

[0003] At present, dynamic data acquisition instrument has two working modes in structural safety monitoring field: 1. Local deployment mode: that is, local networking with monitoring site and industrial computer and other devices; 2. Remote working mode: that is, acquisition device directly uploads data to remote monitoring cloud platform through wireless network. The main problems of current dynamic data acquisition instrument mainly include: fixed working mode, different products are needed to meet the monitoring needs for local or remote working mode; single signal type supported by measurement, such as only supporting voltage signal measurement, for other types of dynamic signals, special acquisition equipment or special secondary instrument also need to be designed to realize, which affects the data acquisition efficiency of acquisition instrument. UTILITY MODEL CONTENT

[0004] Therefore, the utility model aims at providing a kind of multifunctional acquisition instrument based on modularization to solve the problems in prior art.

[0005] The utility model provides a kind of multifunctional acquisition instrument based on modularization, including signal measurement module group being constituted by multiple signal measurement modules, multi-core analog-digital converter, logic control computing power module, main computing power module, wireless wide area network module, wired local area network module, the signal measurement module at least includes signal chain front end configuration circuit, the signal chain front end configuration circuit is used to adjust resistance and capacitor combination in the signal measurement module, to realize the conditioning of voltage, current, IEPE, dynamic strain four kinds of dynamic signals and form channel signal, the multi-core analog-digital converter is built-in with the corresponding multi-core sampling holding converter of the signal measurement module, the multi-core sampling holding converter is connected with multiple signal measurement modules communication respectively, for receiving the channel signal of multiple signal measurement modules and carrying out synchronous sampling, the logic control computing power module with the signal measurement module group, the multi-core analog-digital converter communication connection, for gain control to the signal measurement module group and control the timing of the multi-core analog-digital converter, the main computing power module with the logic control computing power module communication connection, for receiving the data sent by the logic control computing power module and carrying out interaction, the wireless wide area network module and the wired local area network module are electrically connected with the main computing power module, for according to the interactive data of the main computing power module remote working mode or local working mode.

[0006] The utility model has the advantages that: the multifunctional acquisition instrument based on modularization provided by the application carries out modular design according to the principle of high cohesion in module and loose coupling between modules for acquisition function, communication function, computing power function and other functions, can realize selection of communication module, the signal measurement module group composed of multiple signal measurement modules in multifunctional acquisition instrument can realize conditioning of voltage, current, IEPE and dynamic strain four kinds of dynamic signals and form corresponding channel signals of the signal measurement module through resistance and capacitor combination, can realize switching between local deployment mode and remote working mode through flexible switching of wireless wide area network module and wired local area network module, and can select corresponding functional measurement module including voltage / current / IEPE / dynamic strain four kinds of signal measurement modules according to the signal type of measurement sensor, so that one dynamic data acquisition instrument can flexibly meet the needs of monitoring scene, and data acquisition efficiency is improved.

[0007] Preferably, the signal measurement module further comprises a programmable gain circuit, an anti-aliasing filter and a differential driver connected in sequence, the input end of the programmable gain circuit is electrically connected with the output end of the signal chain front-end configuration circuit, the programmable gain circuit is used for amplifying the signal processed by the signal chain front-end configuration circuit, the anti-aliasing filter is used for filtering the signal after gain, and the differential driver is used for converting the filtered signal into a single polarity differential signal whose voltage range meets the input requirement of the multi-core analog-to-digital converter.

[0008] Preferably, the multi-functional acquisition instrument based on modularization further comprises a GPS synchronization module electrically connected with the logic control computing power module and the main computing power module, and a synchronization pulse signal in the GPS synchronization module triggers the plurality of signal measurement modules in the signal measurement module group to sample after being synchronized by the main computing power module, the logic control computing power module and the multi-core analog-to-digital converter.

[0009] Preferably, the multi-functional acquisition instrument based on modularization further comprises an RTC real-time clock electrically connected with the main computing power module, and the main computing power module is further used for reading an UTC time stamp by the GPS synchronization module and synchronizing the RTC real-time clock, so that the plurality of signal measurement modules are synchronously sampled.

[0010] Preferably, the multi-functional acquisition instrument based on modularization further comprises a wireless local area network module and an RS485 module electrically connected with the main computing power module, the main computing power module selects a wireless wide area network module as a communication link to work in a remote mode by writing data in the wireless local area network module, and the main computing power module selects a wired local area network module as a communication link to work in a localized mode by writing data in the RS485 module.

[0011] Preferably, the multi-functional acquisition instrument based on modularization further comprises a power management module electrically connected with the main computing power module, and the power management module is used for providing different excitation power sources for the plurality of signal measurement modules.

[0012] Preferably, the power management module at least comprises a constant voltage power source, a bridge voltage power source and a constant current source excitation, and the constant voltage power source, the bridge voltage power source and the constant current source excitation are used for providing power sources for corresponding types of vibration sensors in the signal chain front-end configuration circuit.

[0013] Additional aspects and advantages of the present application will be given in part in the following description, and will become apparent from the following description, or will be learned by practice of the present application. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1The utility model provides a based on modularization's multifunctional acquisition appearance flow chart.

[0015] Figure 2 For Figure 1 The middle signal measurement module structure schematic diagram shows.

[0016] Figure 3 For Figure 2 The middle signal chain front end configuration circuit structure schematic diagram shows.

[0017] Figure 4 For Figure 2 The middle range control gain circuit structure schematic diagram shows.

[0018] Figure 5 For Figure 2 The middle anti aliasing filter structure schematic diagram shows.

[0019] Figure 6 For Figure 2 The middle difference driver structure schematic diagram shows.

[0020] Figure 7 For Figure 1 The middle power management module's constant voltage power supply structure schematic diagram shows.

[0021] Figure 8 For Figure 1 The middle power management module's bridge voltage power supply structure schematic diagram shows.

[0022] Figure 9 For Figure 1 The middle power management module's constant current source excitation power supply structure schematic diagram shows.

[0023] Main component symbol explanation:

[0024] 1, signal measurement module, 2, multi-core analog-digital converter, 3, logic control algorithm power module, 4, main algorithm power module, 5, GPS synchronization module, 6, power management module, 7, wireless local area network module, 8, wireless wide area network module, 9, wired local area network module, 10, RS485 module, 12, USB host interface, 12, RTC real-time clock.

[0025] The following specific embodiments will further illustrate the utility model in conjunction with the above-mentioned drawings. Specific embodiments

[0026] In order to facilitate understanding of the utility model, the utility model will be described more fully below with reference to the relevant drawings. The drawings show several embodiments of the utility model. However, the utility model can be realized in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the utility model more thorough and comprehensive.

[0027] It should be understood that when an element is referred to as being "on" another element, it can be directly on the other element or intervening elements can also be present. In addition, it should be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements can also be present. As used herein the terms "vertical", "horizontal", "left", "right" and similar terms are used for explanation purposes only.

[0028] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this application belongs. The terminology used in the description of the application herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the application. As used herein, the term "and / or" includes any and all combinations of one or more of the associated listed items.

[0029] Specifically, as shown in Figure 1 As shown in the figure, the multifunctional acquisition instrument based on modularization in the embodiment of the application comprises a signal measurement module group composed of a plurality of signal measurement modules 1, a multi-core analog-to-digital converter 2, a logic control computing power module 3, a main computing power module 4, a wireless wide area network module 8 and a wired local area network module 9. The signal measurement module at least comprises a signal chain front-end configuration circuit, which is used for adjusting the resistance and capacitance combination in the signal measurement module group to realize the conditioning of four kinds of dynamic signals, i.e. voltage, current, IEPE and dynamic strain, and form channel signals. The multi-core analog-to-digital converter 2 is internally provided with a multi-core sampling and holding converter, which is in communication connection with the plurality of signal measurement modules respectively and is used for receiving a plurality of channel signals in the signal measurement module group and performing synchronous sampling. The logic control computing power module 3 is used for controlling the gain of the signal measurement module group and controlling the timing of the multi-core analog-to-digital converter. The main computing power module 4 is used for receiving the data sent by the logic control computing power module 3 and interacting. The wireless wide area network module 8 and the wired local area network module 9 are both in electrical connection with the main computing power module 4 and are used for performing remote working mode or localized working mode according to the interactive data of the main computing power module 4.

[0030] Optionally, in the embodiment, the signal measurement module group is composed of a plurality of signal measurement modules, and each channel adopts an independent measurement module. Thus, on the basis of realizing synchronous dynamic measurement, different physical quantities can be measured by configuring different measurement modules for different channels. Figures 2 to 6 As shown in the figure, the signal measurement module comprises a signal chain front-end configuration circuit, a program-controlled gain circuit, an anti-aliasing filter and a differential driver. By changing the signal chain front-end configuration circuit, the signal measurement module supports four kinds of dynamic signal measurement, i.e. voltage, current, IEPE and dynamic strain.

[0031] As shown in the figure, the multifunctional acquisition instrument based on modularization in the embodiment of the application comprises a signal measurement module group composed of a plurality of signal measurement modules 1, a multi-core analog-to-digital converter 2, a logic control computing power module 3, a main computing power module 4, a wireless wide area network module 8 and a wired local area network module 9. The signal measurement module at least comprises a signal chain front-end configuration circuit, which is used for adjusting the resistance and capacitance combination in the signal measurement module group to realize the conditioning of four kinds of dynamic signals, i.e. voltage, current, IEPE and dynamic strain, and form channel signals. The multi-core analog-to-digital converter 2 is internally provided with a multi-core sampling and holding converter, which is in communication connection with the plurality of signal measurement modules respectively and is used for receiving a plurality of channel signals in the signal measurement module group and performing synchronous sampling. The logic control computing power module 3 is used for controlling the gain of the signal measurement module group and controlling the timing of the multi-core analog-to-digital converter. The main computing power module 4 is used for receiving the data sent by the logic control computing power module 3 and interacting. The wireless wide area network module 8 and the wired local area network module 9 are both in electrical connection with the main computing power module 4 and are used for performing remote working mode or localized working mode according to the interactive data of the main computing power module 4. Figure 2As shown, the front-end configuration circuit of the signal chain: through the combination of resistors and capacitors, it can realize the measurement of four signals: voltage, current, IEPE, and dynamic strain. Among them, VCC_EX has three types of power supplies: constant current source excitation for IEPE sensors, bridge voltage power supply for dynamic strain Wheatstone electrical appliances, and constant voltage excitation power supply for active vibration sensors or current-type vibration sensors; the type of VCC_EX is realized by switching the electronic switch on the power module; R9 is the sampling resistor of the current signal; the remaining resistors and capacitors are configured as RF filter circuits to filter out external common-mode and differential-mode RF interference. Schematically, when measuring dynamic strain signals, weld: R6, R8, R10, R11, C1, C3, C5; do not weld: R5, R7, R9, R12, R13, C2, C4. This configuration constitutes a fully differential signal chain front-end conditioning circuit, which can measure the dynamic strain Wheatstone bridge. At the same time, VCC_EX is switched to Figure 3 The AVCC_BGV power supply shown provides a constant voltage excitation source for the dynamic strain Wheatstone bridge. Similarly, the other three signal measurements are implemented based on the selection of the signal chain front-end configuration circuit. When understanding specific monitoring requirements, for example, if the data acquisition instrument is an 8-channel device and the site requires four sensor signal measurements: voltage, current, IEPE, and dynamic strain, with two channels for each signal, the signal measurement module group can be configured with four signal measurement modules, each using two channels.

[0032] The signal chain front-end configuration circuit functions to uniformly condition voltage, current, IEPE and dynamic strain into a voltage signal for processing by the rear-stage circuit. The signal chain front-end configuration circuit is connected to the IN+ and IN- input ends of the programmable gain circuit, the programmable amplifier U1 amplifies the conditioned voltage signal, the purpose being to improve the measurement accuracy of small signals, the gain configuration of the programmable amplifier being controlled by the logic control algorithm module, the programmable gain circuit using an instrument amplifier with a digitally configurable gain, the gain being selectable at 1, 10, 100 and 1000 according to the size of the measured signal; the VOUT output end of the programmable gain circuit is electrically connected to the R14 input end of the anti-aliasing filter, for avoiding aliasing of the signal during sampling or reducing the influence of the aliasing signal, implemented by an active second-order low-pass filter, the appropriate order being selected according to the anti-aliasing requirements of the system, for example, a 4th or 6th order Bessel active filter can be selected to ensure the best linear phase, and the circuit topology uses an S-K structure, using fewer components while also having high gain accuracy, the passband cutoff frequency of the filter being set at 4KHz to 8KHz according to the requirements of industry monitoring; the differential driver functions to convert single-ended bipolar signals into unipolar differential signals capable of driving a full-differential input analog-to-digital converter, and also converts wide voltage range signals into the measurement range of the analog-to-digital converter, playing a role in buffering and signal matching, for example, if the measurement range of the signal chain is ±10V and the measurement range of the analog-to-digital converter is ±2.5V, then the gain of the full-differential driver is configured at 4:1, and the single-ended bipolar signal is converted into a differential unipolar signal.

[0033] Optionally, in the present embodiment, the multi-core analog-to-digital converter 2 realizes true synchronous sampling of multiple channel signals through a built-in multi-core sample-and-hold converter, a 16-bit or higher SAR analog-to-digital converter can be used according to the system accuracy requirements, and an internal independent core is used to realize true synchronous sampling of multiple channels. The sampling rate is generally set within 32Ksps to meet the requirements. The logic control algorithm module 3 is realized by a real-time microcontroller or FPGA to control the logic signals of the external devices, mainly responsible for the logic control and data transmission of the multi-core analog-to-digital converter 2, packaging and sending the data output by the analog-to-digital converter to the main algorithm module 4, and responsible for the gain control of the signal measurement module group, used to configure the amplification multiple of the signal, and the logic control algorithm module 3 can also respond to the second pulse signal of the GPS synchronization module in real time, ensuring the synchronous triggering sampling requirements between multiple devices; the main algorithm module 4 is composed of a microprocessor with strong computing power, such as a microprocessor with Cortex-A55 architecture, which can process high-speed dynamic data and also execute part of the algorithm requirements, and has the function of data interaction with external communication interfaces.

[0034] The wireless wide area network module 8 adopts a 4G cellular mobile communication module, adopts a Mini PCI-e standard interface to be connected with a device motherboard, and is used for realizing the function of wirelessly remotely connecting the device to a cloud platform. An antenna of the module is connected and fixed on a device panel through a feeder. The function is used when there is no Ethernet communication and there is a cellular mobile communication base station in some fields. By configuring the acquisition instrument, the module is selected as the main communication link of the data acquisition instrument, so that the remote working mode can be realized. The wired local area network module 9 integrates an Ethernet driver and an Ethernet interface, is used for the scene with wired Ethernet network conditions in the field, such as being connected to a field industrial computer through a network, and can adopt a media access control sublayer protocol MAC and a physical interface transceiver PHY integrated with Ethernet. The module communicates with the core board module through an SPI interface. The module has two interfaces, one is a double-row pin and a double-row female interface for docking with a device template, and the interface provides a power supply, an SPI bus for the module, and the other is an external RJ45 interface. By configuring the acquisition instrument, the module is selected as the main communication link of the data acquisition instrument, so that the local working mode can be realized.

[0035] The multifunctional acquisition instrument further includes a GPS synchronization module 5 electrically connected with the logic control computing power module 3 and the main computing power module 4, and an RTC real-time clock 12 electrically connected with the main computing power module 4. The GPS synchronization module 5 is used for synchronously triggering a plurality of signal measurement modules in the signal measurement module group to sample. Specifically, the GPS synchronization module 5 can be responsible for synchronous triggering sampling between multiple devices. When a large structure or building needs to be measured by multiple devices and multiple channels, it is necessary to ensure that all sensors can be synchronously sampled at the same time. Through a 1PPS second pulse signal of the GPS synchronization module, synchronous triggering collection between different devices can be realized. Meanwhile, the GPS synchronization module can also realize local time calibration of the data acquisition instrument, device latitude and longitude positioning and the like. The RTC real-time clock 12 provides an accurate local time reference for the device. The time will be regularly synchronized through an NTP network service of the wired local area network module or UTC time synchronization of the GPS synchronization module.

[0036] Further, in the embodiment, the multifunctional acquisition instrument further comprises a wireless local area network module 7 and an RS485 module 10 electrically connected with the main computing module 4, the main computing module 4 selects the wireless wide area network module 8 as a communication link for a remote working mode by writing data through the wireless local area network module 7, and the main computing module 4 selects the wired local area network module 9 as a communication link for a localized working mode by writing data through the RS485 module 10; the configuration software sets the working mode of the device as the remote working mode or the localized working mode through the wireless local area network module 7 or the RS485 module 10, and after the mode is written into the main computing module 4, the main computing module 4 selects the wireless wide area network module 8 or the wired local area network module 9 as the main communication link for communication.

[0037] In the embodiment, the wireless local area network module 7 integrates WIFI and Bluetooth wireless connection and transmission functions, is mainly used for mode configuration and data reading of a near-end device, can also be connected to the Internet through a local WIFI network to realize remote data transmission, and is a wireless communication module with a built-in protocol stack, an internal data interface of which communicates with a core board module through UART. The module and a device motherboard are connected in a single-row pin and single-row female connection mode; the RS485 module 10 is used for a system integration scheme in some low-speed sampling, and is used for some scenes without an Ethernet in a field where a sampling rate requirement is not high. The module adopts a full isolation design, integrates an RS485 isolation driver, an RS485 isolation power supply and an RS485 surge protection circuit, the isolation RS485 communication module mainly improves the reliability of the RS485 bus, and simultaneously provides maximum protection for the device, and an isolation chip and an overcurrent protection device, ESD static protection and surge protection are integrated on the module. The module has two groups of interfaces, one group is an interface for docking with the device motherboard in a double-row pin and double-row female form, and the other group is an external RS485 device connected externally in a plug-in connector, which is convenient for external wiring. The isolation power supply mainly isolates the power supply provided for the RS485 driver from the outside, and the purpose is to avoid ground loop interference and improve the reliability of communication. The RS485 isolation driver also isolates the logic driving side (low voltage part) from the external RS485 signal driving side (high voltage part) in the chip, and the purpose is also to avoid ground loop interference, and when there is a large surge externally, the isolation protection effect can be achieved. The common mode filter mainly filters the common mode interference signal on the RS485 bus, avoids the RS485 common mode voltage range exceeding the requirement of the chip, and thus causes communication failure. The surge protection circuit adopts two-stage surge protection, the first stage generally adopts a GDT to absorb a large surge, and the second stage adopts a TVS tube for accurate clamping

[0038] Further, in the present embodiment, the multifunctional acquisition instrument further comprises a power management module 6 electrically connected with the main computing power module 4, and the power management module 6 is used to provide different excitation power sources for the signal measurement module group. The power management module 6 integrates various power sources for the data acquisition instrument, and according to the system power consumption requirement, part of the power supply branches are provided with electronic switches controlled by the control signal of the main computing power module, which are used to turn off unnecessary power supply branches in the energy-saving mode. The module can provide corresponding power sources for different types of vibration sensors (voltage / current / IEPE / dynamic strain) through the switching of the electronic switches; for example, Figure 7 as shown, the constant voltage power supply (U10 and peripheral circuit): used to provide for active voltage type vibration sensor; as shown, Figure 8 as shown, the bridge voltage power supply (U12 and peripheral circuit): used to provide constant voltage excitation power supply for dynamic strain Wheatstone voltage; as shown, Figure 9 as shown, the constant current source excitation power supply (U11 and peripheral circuit): used to provide constant current power supply for IEPE type vibration sensor. The main output power sources of the power management module 6 are: computing power module power supply; digital peripheral power supply; external sensor power supply; analog power supply; sensor driving power supply. The power management module 6 classifies the functions of various modules and circuits reasonably, such as analog circuit modules, communication modules, computing power modules, excitation power supplies, peripherals, etc., configures dedicated power chips for different peripherals, and at the same time, through the electronic switches, part of the modules and circuits are controlled in time-sharing mode, for example, when the device enters the timing acquisition mode, the power supply for supplying power to the analog circuit part can be turned off when the signal measurement module group is not working, so as to reduce the system power consumption.

[0039] Optionally, in the present embodiment, the main computing power module 4 is an important control module, and the main functions of the main computing power module 4 include: (1) interacting data with the logic control computing power module 3; (2) responsible for receiving the UTC timestamp of the GPS synchronization module 5 for synchronizing the local RTC time; (3) controlling the power management module 6 to realize system low-power management; (4) synchronizing the RTC real-time clock 12; (5) interacting data with the wireless local area network module 7, the wireless wide area network module 8, the wired local area network module 9, the RS485 module 10, and the USB host interface 11; (6) performing secondary calculation on the original data, such as sinking the original spectrum analysis function on the industrial computer or the cloud platform to the main computing power module to improve the data calculation efficiency, and installing the user's self-defined algorithm in the system of the main computing power module to realize customized service.

[0040] The main computing power module 4 reads the UTC timestamp of the GPS synchronization module 5 and the local RTC real-time clock calibration time every certain period of time through the logic control computing power module 3. When multiple devices are set to trigger sampling, the remote server will issue the time moment of triggering sampling to the main computing power module through the communication module of the device, and the main computing power module stores the triggering time moment and continuously compares it with the time of the device RTC real-time clock. When the two times are close, the main computing power module starts the countdown trigger preparation. At this time, the main computing power module generates a trigger signal through the counter, and provides a sampling start signal to the logic control computing power module one second before the triggering time. The logic control computing power module takes the next GPS second pulse rising edge as the collection trigger signal, which will start the logic control of the logic control computing power module.

[0041] In summary, the multifunctional acquisition instrument based on modularization provided in the application can realize the selection of the communication module, the signal measurement module group composed of multiple signal measurement modules in the multifunctional acquisition instrument can be combined by resistors and capacitors to realize the conditioning of voltage, current, IEPE, and dynamic strain four kinds of dynamic signals and form the channel signals corresponding to the signal measurement module, the flexible switching of the wireless wide area network module and the wired local area network module can realize the switching between the local deployment mode and the remote working mode, and the measurement module with corresponding functions including the voltage / current / IEPE / dynamic strain four kinds of signal measurement modules can be selected according to the signal type of the measurement sensor. In this way, one dynamic data acquisition instrument can flexibly meet the needs of the monitoring scene and improve the data acquisition efficiency.

[0042] It should be noted that the above implementation process is only for the purpose of illustrating the feasibility of the application, but it does not mean that the multifunctional acquisition instrument based on modularization of the application only has the above several implementation processes. On the contrary, as long as the multifunctional acquisition instrument based on modularization of the application can be implemented, it can be included in the feasible implementation scheme of the application.

[0043] In the description of the present specification, the description of the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present specification, the illustrative description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0044] The above-described embodiments only express several implementation manners of the utility model, the description is more specific and detailed, but can not therefore be understood as the limitation of the utility model patent range. It should be pointed out that for ordinary skilled person in the art, without departing from the utility model concept, several deformations and improvements can be made, which belong to the protection range of the utility model. Therefore, the protection range of the utility model patent should be subject to the appended claims.

Claims

1. A multi-functional acquisition instrument based on modularity, characterized in that, The signal measurement module group composed of a plurality of signal measurement modules, a multi-core analog-to-digital converter, a logic control computing power module, a main computing power module, a wireless wide area network module, and a wired local area network module are provided.

2. The modular based multi-functional acquisition instrument of claim 1, wherein, The signal measurement module further comprises a programmable gain circuit, an anti-aliasing filter, and a differential driver connected in sequence.

3. The modular based multi-functional acquisition instrument of claim 1, wherein, The GPS synchronization module in the logic control computing power module and the main computing power module is electrically connected.

4. The modular based multi-functional acquisition instrument of claim 3, wherein, The GPS synchronization module in the logic control computing power module and the main computing power module is electrically connected.

5. The modular based multi-functional acquisition instrument of claim 1, wherein, The wireless local area network module and the RS485 module are electrically connected to the main computing power module. The wireless local area network module and the RS485 module are electrically connected to the main computing power module.

6. The modular based multi-functional acquisition instrument of claim 1, wherein, The modular-based multifunctional acquisition instrument further comprises a power management module electrically connected with the main computing power module, and the power management module is used to provide different excitation power sources for the signal measurement module group.

7. The modular based multi-functional acquisition instrument of claim 6, wherein, The power management module at least comprises a constant voltage power source, a bridge voltage power source and a constant current source excitation, and the constant voltage power source, the bridge voltage power source and the constant current source excitation are used to provide power sources for corresponding types of vibration sensors in the signal chain front-end configuration circuit.

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