CN111045592A - Data acquisition system with high expansibility and high adaptability - Google Patents

Data acquisition system with high expansibility and high adaptability Download PDF

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CN111045592A
CN111045592A CN201911236983.8A CN201911236983A CN111045592A CN 111045592 A CN111045592 A CN 111045592A CN 201911236983 A CN201911236983 A CN 201911236983A CN 111045592 A CN111045592 A CN 111045592A
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data
chip
circuit
interface
sensor
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CN111045592B (en
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董文杰
姚锦江
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Guangzhou College of South China University of Technology
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Guangzhou College of South China University of Technology
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    • GPHYSICS
    • G06COMPUTING; CALCULATING OR COUNTING
    • G06FELECTRIC DIGITAL DATA PROCESSING
    • G06F3/00Input arrangements for transferring data to be processed into a form capable of being handled by the computer; Output arrangements for transferring data from processing unit to output unit, e.g. interface arrangements
    • G06F3/05Digital input using the sampling of an analogue quantity at regular intervals of time, input from a/d converter or output to d/a converter
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

Abstract

The invention discloses a data acquisition system with high expansibility and high adaptability, which belongs to the technical field of data acquisition systems, and is characterized in that an acquisition system is provided with an additional sensor without modifying any hardware or software code of a core mainboard, a client can automatically add and modify analysis modules on an upper computer application program according to the requirement through a universal upper computer analysis module library, the modules cover the universal sensor, the display precision can be automatically and dynamically adjusted according to the data of an actual sensor by a user, and a plurality of computers can synchronously obtain the latest sensor data in real time through a reliable data synchronization protocol based on a high-speed network.

Description

Data acquisition system with high expansibility and high adaptability
Technical Field
The invention relates to a data acquisition system, in particular to a data acquisition system with high expansibility and high adaptability, and belongs to the technical field of data acquisition systems.
Background
At present, a data acquisition system is generally used by large-scale industrial enterprises in China, but with the popularization of electronic technologies and computers, more and more small-scale enterprises or students need to use the data acquisition system in research and development, such as the research and development of robots and the research and development of some intelligent motion devices, and many colleges and universities are currently researching and developing the data acquisition system, but most of the data acquisition systems do not have universality, namely the system can only be used in a certain occasion or only can be used on a certain device, so that much repeated labor is caused, or the acquisition rate is not ideal under the condition of having the universality.
The data acquisition system is deeply researched abroad, but the data acquisition system is expensive, is generally only used in a university laboratory or some professional research institutions, and can only be used for watching real acquisition results from one computer (the data synchronization of a plurality of computers cannot be realized).
The following disadvantages of the prior art acquisition systems are thus analyzed:
1. the acquisition systems on the market at present can only be connected with preset and fixed sensor types and number, once the sensors need to be used in a customized manner, hardware or software codes of a main board of the acquisition system need to be modified so as to adapt to the newly added sensors (or original sensors are replaced by more appropriate sensors), so that the whole body is easily dragged and moved, and various unpredictable problems occur on the main board;
2. an application program of an upper computer (specifically, a computer or a mobile terminal) needs to be developed secondarily and customizedly according to the actual deployment condition of a sensor, namely, a specific client needs to develop a set of independent upper computer application program specifically;
3. and a plurality of computers cannot watch, independently analyze and record data in real time.
Therefore, a data acquisition system with high expansibility and high adaptability is designed to optimize the problems.
Disclosure of Invention
The invention mainly aims to provide a data acquisition system with high expansibility and high adaptability, so that any hardware or software code of a core mainboard is not required to be modified by adding and modifying a sensor in the acquisition system, and the system is simple in structure and simple in operation.
The purpose of the invention can be achieved by adopting the following technical scheme:
a data acquisition system with high expansibility and high adaptability comprises a data acquisition upper layer system and a data acquisition lower layer system,
the data acquisition upper-layer system comprises a main operating device and a multi-component operating device;
the data acquisition bottom layer system comprises a data external transmission system, an acquisition system core mainboard, a multi-group acquisition subsystem and a plurality of sensor groups;
a client data analysis application program is arranged in the sub-operation equipment, and a data synchronization application program is arranged in the main operation equipment;
each group of acquisition subsystems is respectively connected with a group of sensor groups, each group of sensor groups comprises at least one sensor,
the sensor group is used for acquiring sensor information and sending the acquired sensor information to the acquisition subsystem;
the acquisition subsystem is used for receiving sensor information acquired by each group of sensors and sending acquired information obtained after secondary packaging of acquired data to a system core mainboard;
the system core mainboard is used for receiving the collected data collected and sent by the collection subsystem;
the data external transmission system is used for transmitting data sent by the system core mainboard to the main operating equipment;
the main operating equipment is used for synchronizing the received data sent by the system core mainboard to the sub-operating equipment and downloading the corresponding analysis components according to the type of the sensor used by the sub-operating equipment and the analysis requirement;
the sub-operation equipment is used for analyzing and displaying the acquired information according to the data synchronization information sent by the total operation equipment;
the sensor group is connected with a collection subsystem, the collection subsystem is connected with a core mainboard of the collection system, the core mainboard of the collection system is connected with a data outward transmission system, the data outward transmission system is connected with a server data synchronization application program in the main operation equipment, and the data synchronization application program of the main operation equipment is connected with the sub operation equipment.
Preferably, the server data synchronization application program in the master operating device is configured to receive data feedback from the data outbound system, and send the data feedback to the slave operating devices as the server real-time synchronization data.
Preferably, the acquisition subsystem and the sensor group acquire acquired data through an IIC or SPI transmission protocol, and transmit the acquired data to the acquisition system core mainboard in a serial port or Internet manner in a long distance.
Preferably, the server data synchronization application includes an analysis module library, and the client data analysis application downloads the analysis module library through the server data synchronization application.
Preferably, each client application program can receive data distributed from the server-side synchronization program for displaying.
Preferably, the data transmission system is internally provided with synchronous backup data of an SD card.
Preferably, the format of the collected information after the secondary packaging is as follows: < data type > length of data packet > length of data acquisition time > data identifier data value! (ii) a
Preferably, the core motherboard of the acquisition system comprises a main control board circuit, the main control board circuit comprises a power supply voltage stabilizing circuit of a chip U1, a crystal oscillator circuit, an LED display circuit and a key circuit, the power supply voltage stabilizing circuit comprises a chip AMS1117, the grounding end of the chip AMS1117 is grounded, the output end of the chip AMS1117 is connected with the power supply end of an interface J3 through the cathode of a diode D2 on one hand, and is connected with VTref of a chip Jlink1, 64 terminal, 13 terminal, 48 terminal and 19 terminal of the chip U1 through a diode D1 on the other hand, the grounding end of an interface J3 is grounded, the input end of the chip AMS1117 is respectively connected with VCC end of the interface J1 and VO end of the interface J2, the grounding end of the interface J1 is grounded, the VI end of the interface J2 is connected with 1 terminal of the interface J4, the 2 external terminal of J4 is connected with 5V input power supply, 7 of the chip Jlink1 is connected with 46 terminal of the chip U1, the 3 terminals, the 4 terminals, the 5 terminals and the 6 terminals of the chip U1 are connected with the crystal oscillator circuit, the 33 terminals and the 34 terminals of the chip U1 are connected with the LED display circuit, the 7 terminals of the chip U1 are connected with the key circuit, and the 16 terminals and the 17 terminals of the chip U1 are used for being connected with the acquisition subsystem.
Preferably, the data transmission system comprises a main control board circuit, a Wifi module and a MicroSD card reading circuit, wherein the main control board circuit also comprises a chip U1, a power supply voltage stabilizing circuit, a crystal oscillator circuit, an LED display circuit and a key circuit, and the Wifi module and the MicroSD card reading circuit are connected with pins PA10 and PA9 of the chip U1 through an interface J41.
Preferably, the acquisition system core motherboard further includes an acceleration circuit, the acceleration circuit includes an acceleration timing chip MMA7455, a VCC terminal of the chip MMA7455 is connected to a negative electrode of a diode D2 in the power voltage stabilizing circuit, a ground terminal of the chip MMA7455 is grounded, an SCL terminal of the chip MMA7455 is connected to a PB6 of the chip U1 through an interface res1, another pin of the interface res1 is connected to a negative electrode of a diode D2, an SDA terminal of the chip MMA7455 is connected to a PB7 of the chip U1 through an interface res2, and another pin of the interface res2 is connected to a negative electrode of the diode D2.
The invention has the beneficial technical effects that:
the data acquisition system with high expansibility and high adaptability provided by the invention ensures that the acquisition system is added with sensors without modifying any hardware or software codes of a core mainboard, through the upper computer analysis module library such as the general sub-operation equipment, the client can automatically increase and change the analysis module on the upper computer application program according to the requirement, the modules cover a universal sensor, the display precision can be dynamically adjusted by a user according to the data of the actual sensor, through the data synchronization application program, a plurality of computers can synchronously obtain the latest sensor data in real time, the data acquisition bottom system acquires data and then analyzes and displays the acquired data through the data acquisition upper system, the sub-operation equipment of the data upper system is independently operated to analyze and display all the acquired data, and the system is simple in structure and convenient to operate.
Drawings
FIG. 1 is a general system diagram of a preferred embodiment of a highly scalable and adaptable data collection system in accordance with the present invention;
FIG. 2 is a top level system diagram of a preferred embodiment of a highly scalable and adaptable data collection system in accordance with the present invention;
FIG. 3 is a bottom level system diagram of a preferred embodiment of a highly scalable and adaptable data collection system in accordance with the present invention.
Fig. 4 is a structural diagram of a chip U1 in a circuit of a main control board in a data acquisition system with high scalability and high adaptability according to the present invention.
Fig. 5 is a structural diagram of a power supply voltage stabilizing circuit in a main control board circuit in a data acquisition system with high expandability and high adaptability according to the present invention.
Fig. 6 is a structural diagram of a crystal oscillator circuit in a main control board circuit in a data acquisition system with high scalability and high adaptability according to the present invention.
Fig. 7 is a structural diagram of an LED display circuit in a main control board circuit of a data acquisition system with high scalability and high adaptability according to the present invention.
Fig. 8 is a schematic diagram of a key circuit in a main control board circuit of a data acquisition system with high scalability and high adaptability according to the present invention.
Fig. 9 is a circuit configuration diagram of an interface J41 in a data acquisition system with high scalability and high adaptability according to the present invention.
Fig. 10 is a circuit structure diagram of a Wifi module in a data acquisition system with high extensibility and high adaptability according to the present invention.
FIG. 11 is a diagram of a reading circuit structure of a MicroSD card in a data acquisition system with high expandability and high adaptability according to the present invention.
Fig. 12 is a diagram of an acceleration circuit in a data acquisition system with high scalability and high adaptability according to the present invention.
Detailed Description
In order to make the technical solutions of the present invention more clear and definite for those skilled in the art, the present invention is further described in detail below with reference to the examples and the accompanying drawings, but the embodiments of the present invention are not limited thereto.
As shown in fig. 1-3, the data acquisition system provided by this embodiment has high scalability and high adaptability,
the data acquisition upper-layer system comprises a main operating device and a multi-component operating device; the total operation equipment in the embodiment is a total computer or mobile equipment; the sub-operation equipment comprises first computing or mobile equipment, second computer or mobile equipment, third computer or mobile equipment and fourth computer or mobile equipment;
the data acquisition bottom layer system comprises a data external transmission system, an acquisition system core mainboard, a multi-group acquisition subsystem and a plurality of sensor groups;
a client data analysis application program is arranged in the sub-operation equipment, and a data synchronization application program is arranged in the main operation equipment;
each group of acquisition subsystems is respectively connected with a group of sensor groups, each group of sensor groups comprises at least one sensor, the acquisition subsystems in the embodiment comprise 4 groups, and 4 groups of sensors are arranged under each group of acquisition subsystems;
the sensor group is used for acquiring sensor information and sending the acquired sensor information to the acquisition subsystem;
the acquisition subsystem is used for receiving sensor information acquired by each group of sensors and sending acquired information obtained after secondary packaging of acquired data to a system core mainboard; in this embodiment, the format of the acquired information after the secondary packaging is as follows: < data type > length of data packet > length of data acquisition time > data identifier data value! The data type is a format corresponding to the data acquired by different acquisition subsystems; the data identifier is a representative symbol of the data, such as: for example, the operating device of the branch a receives the resistance value 540 returned by the direction monitor, the operating device of the branch B receives the acceleration in the XYZ direction returned by the acceleration sensor, the acceleration is ZA:0.91XA:03YA:0.0, and when the operating device of the branch A, B needs to return the acquired data to the system core motherboard, the data needs to be formatted and formatted into the data
A system: < T _ S >23> ms:0002> A: 0540! (ii) a Wherein T _ S represents the data type of the direction sensor, the data length is 0002, A is 0540 and the resistance value is 540 ohm;
and B, system:
<T_A>64>ms:0002>XA:-00.30>YA:+00.00>ZA:+00.91.1!;
the system core mainboard is used for receiving the collected data collected and sent by the collection subsystem;
the data external transmission system is used for transmitting data sent by the system core mainboard to the main operating equipment;
the main operating equipment is used for synchronizing the received data sent by the system core mainboard to the sub-operating equipment and downloading the corresponding analysis components according to the type of the sensor used by the sub-operating equipment and the analysis requirement; for example, the sub-operation equipment downloads a function corresponding to the direction sensor from the system A if the direction sensor is used as the direction sensor and the analysis requirement is that the relation between the resistance value of the direction sensor and the time is to be analyzed;
the sub-operation equipment is used for analyzing and displaying the acquired information according to the data synchronization information sent by the total operation equipment; in this embodiment, the sub-operation device analyzes the received sensor data in a secondary packaging manner to obtain a corresponding resistance value, and then establishes a corresponding graph relationship according to a corresponding functional relationship determined in the total operation device to display the graph relationship;
the sensor group is connected with a collection subsystem, the collection subsystem is connected with a core mainboard of the collection system, the core mainboard of the collection system is connected with a data outward transmission system, the data outward transmission system is connected with a server data synchronization application program in the main operation equipment, and the data synchronization application program of the main operation equipment is connected with the sub operation equipment.
In this embodiment, the server data synchronization application program in the master operating device is configured to receive the data feedback of the data outbound system, send the data feedback to the slave operating devices as the server real-time synchronization data, and send the data synchronization data from the master operating device to the slave operating devices, so as to prevent operations on other slave operating devices from affecting other slave operating devices.
In this embodiment, the acquisition subsystem and the sensor group acquire acquired data through an IIC or SPI transmission protocol, and transmit the acquired data to an acquisition system core motherboard at a long distance in a serial port or internet manner; by adopting the communication protocol and the data transmission mode to transmit data, the structure is simple and the transmission is reliable.
In this embodiment, the server data synchronization application includes an analysis module library, the client data analysis application downloads the analysis module library through the server data synchronization application, and the client data analysis application in the sub-operation device downloads the analysis module library through the server, without occupying memory resources of the sub-operation device for downloading.
In this embodiment, each client application may receive data distributed from the server synchronization program for displaying.
In this embodiment, the data transmission system is internally provided with synchronous backup data of an SD card, and the data transmission system is provided with the SD card for data backup, thereby preventing data loss on the core motherboard of the acquisition system.
As shown in fig. 4-12, the acquisition system core motherboard includes a main control board circuit, the main control board circuit includes a power voltage stabilizing circuit of a chip U1, a crystal oscillator circuit, an LED display circuit and a key circuit, the power voltage stabilizing circuit includes a chip AMS1117, a ground terminal of the chip AMS1117 is grounded, an output terminal of the chip AMS1117 is connected to a power terminal of an interface J3 through a cathode of a diode D2, and is connected to VTref of the chip Jlink1, 64, 13, 48, and 19 terminals of the chip U1 through a diode D1, a ground terminal of an interface J3 is grounded, an input terminal of the chip AMS1117 is connected to a VCC terminal of the interface J1 and a VO terminal of the interface J2 respectively, a ground terminal of the interface J1 is grounded, a VI terminal of the interface J2 is connected to a1 terminal of the interface J4, a 2 terminal of the interface J4 is connected to a 5V input power supply, a terminal of the chip AMS1 is connected to a, the 15 terminals of the chip Jlink1 are connected with the 7 terminals of the chip U1, the 3 terminals, the 4 terminals, the 5 terminals and the 6 terminals of the chip U1 are connected with the crystal oscillator circuit, the 33 terminals and the 34 terminals of the chip U1 are connected with the LED display circuit, the 7 terminals of the chip U1 are connected with the key circuit, and the 16 terminals and the 17 terminals of the chip U1 are used for being connected with the acquisition subsystem. In this embodiment, the model of the chip U1 is STM32F103RET 6.
The power supply voltage stabilizing circuit reduces the voltage of an input 5V power supply through a chip AMS1117 and then provides a 3.3V power supply for a chip U1 and a chip Jlink1 to ensure the stable work of the chip, the chip Jlink1 is used for programming firmware on the chip U1 through terminals 7 and 9, a diode D1 is arranged between the chip AMS1117 and the chip Jlink1 to prevent crosstalk between chips, a crystal oscillator circuit provides a clock signal for the chip U1, a key circuit provides peripheral input for the chip, an LED display circuit displays the state of the chip U1, the chip U1 is externally connected with an acquisition subsystem through terminals 16 and 17 to acquire information acquired by the subsystem and then performs storage processing through a chip U1 to send the information to an interface J41 to be connected with a data transmission system to realize serial port communication, meanwhile, due to the addition of the chip Jlink1, the programming firmware on the chip U1 is performed through the chip, if a bottom acquisition sensor group needs to be additionally arranged, the chip can be conveniently realized through the chip, simple structure, the commonality is strong.
In this embodiment, the data transmission system includes a main control board circuit, a Wifi module and a MicroSD card reading circuit, the main control board circuit also includes a chip U1, a power supply voltage stabilizing circuit, a crystal oscillator circuit, an LED display circuit and a key circuit, and the Wifi module and the MicroSD card reading circuit are connected with pins PA10 and PA9 of the chip U1 through an interface J41.
The data outgoing system also comprises a main control board circuit, a Wifi module and a MicroSD card reading circuit, the main control board circuit is also independently arranged in the data outgoing system to realize storage of a core mainboard of the acquisition system, wireless transmission and storage of SD card data, the main control board is independently adopted by the data outgoing system and the core mainboard of the acquisition system, and processing data of the data outgoing system is increased.
In this embodiment, the core motherboard of the acquisition system further includes an acceleration circuit, the acceleration circuit includes an accelerometer chip MMA7455, a VCC terminal of the chip MMA7455 is connected to a negative electrode of a diode D2 in the power voltage stabilizing circuit, a ground terminal of the chip MMA7455 is grounded, an SCL terminal of the chip MMA7455 is connected to a PB6 of the chip U1 through an interface res1, another pin of the interface res1 is connected to a negative electrode of a diode D2, an SDA terminal of the chip MMA7455 is connected to a PB7 of the chip U1 through an interface res2, and another pin of the interface res2 is connected to a negative electrode of the diode D2.
By externally connecting an acceleration circuit to the chip U1, acceleration processing can be performed on the chip U1. In summary, the acquisition system does not need to modify any hardware or software code of the core mainboard, clients can automatically modify analysis modules on an upper computer application program as required through an upper computer analysis module library such as a general sub-operation device, the modules cover the general sensors, the display precision can be automatically and dynamically adjusted according to data users of the actual sensors, multiple computers can synchronously obtain latest sensor data in real time through a data synchronization application program, the data acquisition bottom layer system acquires the data and then analyzes and displays the acquired data through the data acquisition upper layer system, the sub-operation device of the data upper layer system is independently operated to analyze and display all the acquired data, and the system is simple in structure and convenient to operate.
The above description is only for the purpose of illustrating the present invention and is not intended to limit the scope of the present invention, and any person skilled in the art can substitute or change the technical solution of the present invention and its conception within the scope of the present invention.

Claims (10)

1. A data acquisition system with high expansibility and high adaptability comprises a data acquisition upper layer system and a data acquisition lower layer system, and is characterized in that: the data acquisition upper-layer system comprises a main operating device and a multi-component operating device;
the data acquisition bottom layer system comprises a data external transmission system, an acquisition system core mainboard, a multi-group acquisition subsystem and a plurality of sensor groups;
a client data analysis application program is arranged in the sub-operation equipment, and a data synchronization application program is arranged in the main operation equipment;
each group of acquisition subsystems is respectively connected with a group of sensor groups, each group of sensor groups comprises at least one sensor,
the sensor group is used for acquiring sensor information and sending the acquired sensor information to the acquisition subsystem;
the acquisition subsystem is used for receiving sensor information acquired by each group of sensors and sending acquired information obtained after secondary packaging of acquired data to a system core mainboard;
the system core mainboard is used for receiving the collected data collected and sent by the collection subsystem;
the data external transmission system is used for transmitting data sent by the system core mainboard to the main operating equipment;
the main operating equipment is used for synchronizing the received data sent by the system core mainboard to the sub-operating equipment and downloading the corresponding analysis components according to the type of the sensor used by the sub-operating equipment and the analysis requirement;
the sub-operation equipment is used for analyzing and displaying the acquired information according to the data synchronization information sent by the total operation equipment;
the sensor group is connected with a collection subsystem, the collection subsystem is connected with a core mainboard of the collection system, the core mainboard of the collection system is connected with a data outward transmission system, the data outward transmission system is connected with a server data synchronization application program in the main operation equipment, and the data synchronization application program of the main operation equipment is connected with the sub operation equipment.
2. The data acquisition system with high expandability and high adaptability as set forth in claim 1, wherein: and the server data synchronization application program in the main operation equipment is used for receiving the data return of the data outward transmission system and serving as the server real-time synchronization data to the sub-operation equipment.
3. The data acquisition system with high expandability and high adaptability as set forth in claim 1, wherein: the acquisition subsystem and the sensor group acquire acquired data through an IIC or SPI transmission protocol, and transmit the acquired data to an acquisition system core mainboard in a serial port or internet mode in a long distance.
4. The data acquisition system with high expandability and high adaptability as set forth in claim 1, wherein: the server data synchronization application program comprises an analysis module library, and the client data analysis application program downloads the analysis module library through the server data synchronization application program.
5. The data acquisition system with high expandability and high adaptability as set forth in claim 1, wherein: each client application program can receive data distributed by the server-side synchronous program for displaying.
6. The data acquisition system with high expandability and high adaptability as set forth in claim 1, wherein: the data transmission system is internally provided with SD card synchronous backup data.
7. The data acquisition system with high expandability and high adaptability as set forth in claim 1, wherein: the format of the acquired information after secondary packaging is as follows: < data type > length of data packet > length of data acquisition time > data identifier data value! .
8. The data acquisition system with high expandability and high adaptability as set forth in claim 6, wherein: the acquisition system core mainboard comprises a main control board circuit, the main control board circuit comprises a chip U1 power supply voltage stabilizing circuit, a crystal oscillator circuit, an LED display circuit and a key circuit, the power supply voltage stabilizing circuit comprises a chip AMS1117, the grounding end of the chip AMS1117 is grounded, the output end of the chip AMS1117 is connected with the power supply end of an interface J3 on the one hand through the cathode of a diode D2 and is connected with VTref of a chip Jlink1, 64, 13, 48 and 19 terminals of a chip U1 on the other hand through a diode D1, the grounding end of an interface J3 is grounded, the input end of the chip AMS1117 is respectively connected with VCC end of an interface J1 and VO end of an interface J2, the grounding end of an interface J1 is grounded, VI end of an interface J2 is connected with 1 terminal of an interface J4, 2 external 5V input power supply of a J4 is connected, terminal 7 of the chip AMS1117 is connected with 46 of a chip U1, terminal of a chip Jlink1, the 3 terminals, the 4 terminals, the 5 terminals and the 6 terminals of the chip U1 are connected with the crystal oscillator circuit, the 33 terminals and the 34 terminals of the chip U1 are connected with the LED display circuit, the 7 terminals of the chip U1 are connected with the key circuit, and the 16 terminals and the 17 terminals of the chip U1 are used for being connected with the acquisition subsystem.
9. The data acquisition system with high expandability and high adaptability as set forth in claim 8, wherein: the data outgoing system comprises a main control board circuit, a Wifi module and a MicroSD card reading circuit, wherein the main control board circuit also comprises a chip U1, a power supply voltage stabilizing circuit, a crystal oscillator circuit, an LED display circuit and a key circuit, and the Wifi module and the MicroSD card reading circuit are connected with pins PA10 and PA9 of the chip U1 through an interface J41.
10. The data acquisition system with high expandability and high adaptability as set forth in claim 8, wherein: the acquisition system core mainboard further comprises an acceleration circuit, the acceleration circuit comprises an acceleration timing chip MMA7455, the VCC end of the chip MMA7455 is connected with the cathode of a diode D2 in the power supply voltage stabilizing circuit, the grounding end of the chip MMA7455 is grounded, the SCL terminal of the chip MMA7455 is connected with the PB6 of the chip U1 through an interface res1, the other pin of the interface res1 is connected with the cathode of a diode D2, the SDA terminal of the chip MMA7455 is connected with the PB7 of the chip U1 through an interface res2, and the other pin of the interface res2 is connected with the cathode of the diode D2.
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CN109617947A (en) * 2018-11-07 2019-04-12 重庆光电信息研究院有限公司 The heterologous Internet of Things edge calculations system and method in city being arranged according to management category

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