CN210324717U

CN210324717U - Universal extensible engineering and experimental system

Info

Publication number: CN210324717U
Application number: CN201920523479.5U
Authority: CN
Inventors: 程勇; 敖开发; 佀云鹰; 雷莎; 陈逢源; 许凯
Original assignee: Wuhan Guangchi Education & Technology Co ltd
Current assignee: Wuhan Guangchi Education & Technology Co ltd
Priority date: 2019-04-17
Filing date: 2019-04-17
Publication date: 2020-04-14
Anticipated expiration: 2029-04-17

Abstract

The utility model provides a general expandable engineering and experiment system, which comprises a measurement and control host, wherein the measurement and control host is provided with a plurality of standard interfaces, the standard interfaces are used for being electrically connected with a sensing module and an application module, and the standard interfaces are electrically connected with an operation processing module through a signal processing module; the display module and the input module are electrically connected with the operation processing module. In the preferred scheme, a functional host is also arranged and is electrically connected with the measurement and control host through a connector and a bus; the bus is one or more of USB, serial SCSI, CAN, EIA-485, live wire or thunder and lightning. Through adopting the framework of a plurality of standard interfaces and agreement, can match different sensor module and application module through the standard interface, improve engineering experiment instrument's commonality by a wide margin, reduce experiment teaching cost, improve the efficiency of teaching experiment. Flexible application creativity development space is provided by adopting modules, layered design, standard protocol interfaces and building block type application.

Description

Universal extensible engineering and experimental system

Technical Field

The utility model relates to an laboratory glassware field and industrial production field, especially an expanded engineering of general type and experimental system.

Background

At present, teaching instruments are developed by taking disciplines and knowledge points as target guidance, the pertinence is strong, the universality is poor, the expandable and innovative development content is limited, the fault rate is high, the maintainability is poor, and the problem is solved by professionals, so that the professional requirements cannot be quickly recovered. More parts can appear along with the continuous progress of science and technology, and the situation that the part is difficult to adapt to newly appearing can appear in current laboratory glassware, and the complete machine carries out the replacement cost higher.

Meanwhile, in the conversion process of laboratory scientific research and industrial production, more innovative designs and autonomous system building experimental verification and application are needed, and the traditional teaching instrument is difficult to meet the requirement of the innovation; an experiment system in the prior art usually aims at a certain specific experiment or a specific sensor, and cannot be transferred to other experiments, for example, chinese patent document CN206441379U is a wireless sensor teaching experiment system based on Zigbee technology; CN205665202U a humidity-controllable multi-parameter surface acoustic wave gas sensor test experiment system; a CN202650368U Hall sensor experiment module and an engineering teaching experiment system; etc. can only accomplish specific experimental tasks, which leads to high experimental costs.

SUMMERY OF THE UTILITY MODEL

The utility model aims to solve the technical problem that an expanded engineering of general type and experimental system is provided, can improve the commonality of engineering experiment, observe and control host computer and different function host computers through one, sensing module, application module makes up and accomplishes multiple experiment and industrial control test, in the preferred scheme, can be convenient extend experimental function, can be convenient upgrade and the replacement to the partial structure of host computer, can realize the interaction with mobile terminal, realize remote experiment operation and data acquisition, verify the innovative design, realize scientific research and industrial production's seamless conversion and application.

In order to solve the technical problem, the utility model discloses the technical scheme who adopts is: a general expandable engineering and experiment system comprises a measurement and control host, wherein the measurement and control host is provided with a plurality of standard interfaces, the standard interfaces are used for being electrically connected with a sensing module and an application module, and the standard interfaces are electrically connected with an operation processing module through a signal processing module;

the display module and the input module are electrically connected with the operation processing module.

In the preferred scheme, a functional host is also arranged and is electrically connected with the measurement and control host through a connector and a bus;

the bus is one or more of USB, serial SCSI, CAN, EIA-485, live wire or thunder and lightning.

The standard interface is provided with a plurality of pins, part of the pins are connected with the analog circuit and are used for accessing and outputting analog signals, and part of the pins are connected with the digital circuit and are used for inputting and outputting digital signals.

In a preferred scheme, the connector comprises elastic thimbles and corresponding connecting contacts which are respectively positioned on the measurement and control host and the functional host.

In the preferred scheme, the elastic thimble and the connecting contact are respectively arranged at the top and the bottom of the measurement and control host and the functional host so that the measurement and control host and the functional host are connected in a stacking mode.

In a preferred embodiment, the functional host includes one or more of a power supply device, a load device, a temperature control device, a motor driving device, a signal source device, an arithmetic device, and an optical power meter.

In a preferred scheme, the sensing module and the application module are connected with the measurement and control host or the functional host through a standard interface or a wireless mode.

In a preferred scheme, the sensing module and the application module comprise a temperature sensor, a humidity sensor, a pressure sensor, a displacement sensor, a photoelectric sensor, a hall sensor, a magnetic sensor and the like, a light power sensor, an illuminance sensor, a pyroelectric sensor, an electric translation table, a motor, a resistance load, an electric control valve and a light source.

In a preferred scheme, the display module comprises a display screen, a touch screen and a mobile terminal;

the input module comprises a keyboard, a mouse, a mobile terminal and a touch screen.

In the preferred scheme, the keyboard, the mouse, the mobile terminal and the touch screen are electrically connected with the operation processing module through a communication interface;

the communication interface comprises one or more of RJ45, RS232, RS485, CAN, PCI, I/O interface, USB, BNC, Bluetooth, WIFI or NFC.

In a preferred scheme, the display module and the input module are touch screens, the touch screens and the standard interface are arranged on a panel, and the panel is connected with the shell in an inserting manner;

the supporting plate is fixedly connected with the shell, the main board is fixedly connected with the supporting plate, and the signal processing module and the operation processing module are fixedly arranged on the main board;

the mainboard is provided with an extended high-speed signal processing module interface;

the bearing plate is provided with a plurality of long round holes which are arranged in an array.

The utility model provides a pair of but general type expanded engineering and experimental system through the framework that adopts a plurality of standard interfaces and agreement, can match different sensing module and application module through the standard interface, improves engineering experiment instrument's commonality by a wide margin, reduces experiment teaching cost, improves the efficiency of teaching experiment. In the preferred scheme, the experimental function can be conveniently expanded by adopting a structure that the connector is connected with the functional host. The measurement and control host and the functional host adopt a connection mode of stacking up and down, so that the expansion operation can be conveniently carried out, and even an external cable is not needed. Besides the traditional control and display device, a touch screen or a mobile terminal can be adopted, for example, a mobile phone can interact with the measurement and control host and the functional host, and the applicability of the experimental system is further improved. The panel where the standard interface and the touch screen are located is connected with the shell in a plugging mode, so that the components can be upgraded, replaced and maintained conveniently. The structure that high-speed signal processing module interface, mainboard, bearing plate and casing are connected is extended, the upgrading of host computer of being convenient for, and adopt different mainboard component overall arrangement after the upgrading, can not influence the installation of mainboard yet. The use cost is reduced. The utility model realizes the product modular design, building block type application, and supports rich innovation secondary development, intelligent data processing and network management; the development work of laboratory scientific research projects is greatly reduced, and an effective verification method and application for scientific research and industrial production conversion are provided. The device utilization rate is improved to the maximum extent, and the device management and system application cost is reduced. The utility model provides a nimble application can innovate the development space, has opened the bridge that scientific research and industrial production used.

Drawings

The invention will be further explained with reference to the following figures and examples:

fig. 1 is the utility model discloses well observe and control the host computer and look down the stereogram of direction.

Fig. 2 is a perspective view of the upward viewing direction of the middle measurement and control host of the present invention.

Fig. 3 is the internal structure schematic diagram of the measurement and control host in the utility model.

Fig. 4 is the utility model discloses well observe and control the structure schematic diagram when host computer and functional host computer pile up to be connected.

Fig. 5 is a block diagram of the measurement and control host and the functional host of the present invention.

Fig. 6 is the internal structure block diagram of the middle measurement and control host of the utility model.

Fig. 7 is the structure block diagram of the utility model discloses well observing and controlling host computer and sensing and application module and main control platform are connected.

Fig. 8 is a block diagram of the structure of the measurement and control host, the functional host, the sensing and application module and the main control platform.

Fig. 9 is a detailed structure block diagram of the connection between the measurement and control host and the main control platform of the present invention.

Fig. 10 is a detailed structure block diagram of the connection between the measurement and control host and the functional host of the present invention.

Fig. 11 is a schematic diagram of the central control chip of the present invention.

Fig. 12 is a schematic diagram of the 485 bus interface chip of the present invention.

Fig. 13 is a schematic diagram of the interface chip of the lcd panel of the present invention.

Fig. 14 is a schematic diagram of the keyboard interface of the present invention.

Fig. 15 is a schematic structural diagram of the amplifier according to the present invention.

Fig. 16 is a schematic diagram of the analog input circuit of the present invention.

Fig. 17 is a schematic diagram of another analog input circuit according to the present invention.

Fig. 18 is a schematic circuit diagram of the power supply of the present invention.

Fig. 19 is a schematic circuit diagram of another power supply according to the present invention.

Fig. 20 is a schematic view of the middle pin interface of the present invention.

Fig. 21 is a schematic circuit diagram of the FPGA expansion interface of the present invention.

Fig. 22 is a circuit schematic diagram of the switching value input interface of the present invention.

Fig. 23 is a schematic diagram of a circuit for converting the number of switches and the number of bits according to the present invention.

Fig. 24 is a schematic diagram of a signal source circuit according to the present invention.

In the figure: the system comprises a measurement and control host 1, a functional host 2, a sensing module and application module 3, a standard interface 4, a touch screen 5, a connector 6, an elastic thimble 61, a connecting contact 62, a mainboard 7, a supporting plate 8, a shell 9 and a panel 10.

Detailed Description

As shown in fig. 1 to 8, a general extensible engineering and experimental system includes a measurement and control host 1, wherein the measurement and control host 1 is provided with a plurality of standard interfaces 4, the standard interfaces 4 are used for being electrically connected with a sensing module and an application module 3, and the standard interfaces 4 are electrically connected with an operation processing module through a signal processing module; the standard interface 4 in this example is preferably a pin-and-socket interface, in this example an 8-pin round interface, of anti-reverse-plug design. The standard interface 4 is provided with a plurality of pins, part of the pins are connected with the analog circuit and are used for accessing and outputting analog signals, and part of the pins are connected with the digital circuit and are used for inputting and outputting digital signals. So that the installation is convenient and the connection is reliable. The standard interface 4 comprises commonly used digital signal input/output, analog signal input/output, switching value input/output, signal source and the like, and parameters of the output/input signals can be displayed through the display module. And setting through the input module. Preferably, a structure of a USB universal interface may be adopted. The standard interface 4 in this example can simultaneously access the analog signal and the digital signal, and respectively send the analog signal and the digital signal to different processing circuits, such as an analog signal processing circuit, through different lines, for converting the analog signal into the digital signal. And for example, the switching value and the digital signal receiving and processing circuit are used for realizing the switching value and the conversion from the digital value to the level.

The standard interface 4 is electrically connected with the operation processing module through the signal processing module; the signal processing module comprises one or more of an amplifying module, a rectifying module, a filtering module and a digital-analog signal processing module. The operation processing module adopts a single-chip or multi-chip architecture, such as a single-chip microcomputer, a single-chip microcomputer + CPU architecture or an industrial personal computer architecture, in the embodiment, the single-chip microcomputer + CPU architecture is adopted, the single-chip microcomputer adopts an STM32F series single-chip microcomputer, such as an STM32F429ITG6 or an STM32F427, and the CPU adopts EP4CE30F23C7 and series chips. The operation processing module also comprises a storage module, the storage module comprises one or a combination of a plurality of static memory SRAM, dynamic memory DRAM, flash memory, external hard disk and SD card, and all the storage structures are adopted in the embodiment. The circuit schematic diagram is shown in the attached figures 11-24.

In a preferred embodiment, the sensing module in this embodiment includes a temperature sensor, a humidity sensor, a pressure sensor, a displacement sensor, a photoelectric sensor, a hall sensor, a magnetic sensor, etc., an optical power sensor, an illuminance sensor, a pyroelectric sensor, and a voltage-current detector. The application module 3 comprises an electric translation table, an electric control valve, a motor, a resistance load, a light source and the like.

In the preferred scheme, a functional host 2 is also arranged, and the functional host 2 is electrically connected with the measurement and control host 1 through a connector 6 and a bus;

the bus is one or more of USB, serial SCSI, CAN, EIA-485, live wire or thunder and lightning. In this example, an EIA-485 and a USB bus are adopted, and further preferably, a PCIe expansion interface is reserved on the motherboard to expand more functions. CAN buses may also be employed to improve transmission efficiency. Where fire or lightning may be used for transmission of large quantities, e.g. large video signals, e.g. for experiments in the field of unmanned driving.

In a preferred embodiment as shown in fig. 1, 2 and 4, the connector 6 includes a resilient pin 61 and a corresponding connecting contact 62 respectively located on the measurement and control host 1 and the function host 2.

In a preferred embodiment, as shown in fig. 1 and 2, the elastic pins 61 and the connection contacts 62 are respectively disposed on the top and the bottom of the measurement and control host 1 and the functional host 2, so that the measurement and control host 1 and the functional host 2 are connected in a stacked manner. Adopt this structure, extension that can be convenient the utility model discloses an experimental function. For example, for an unusual experimental device, the unusual parts can be expanded as the functional host 2, and the entire experimental device does not need to be purchased, thereby reducing the experimental cost. As shown in fig. 4 and 8, in this example, more functions can be expanded by stacking a plurality of function hosts 2.

In a preferred embodiment, the functional host 2 includes one or more of a power supply device, a load device, a temperature control device, a motor driving device, a signal source device, an arithmetic device, and an optical power meter. The functional host is not limited to the device, and can be added according to the actual application requirements and the standard interface protocol, so that the expansion is convenient.

By the structure, the connection between the measurement and control host 1 and the functional host 2 is very simple and convenient. The replacement of different functional hosts 2 and the connection of the measurement and control host 1 and the plurality of functional hosts 2 are also very convenient. The measurement and control host 1 and the functional host 2 can meet various application requirements through combination. As shown in fig. 5 to 7, various combination schemes are adopted, for example, in fig. 10, the measurement and control host 1 is connected with the functional host 2 having the measurement and control module. In fig. 9, the measurement and control host 1 is connected to the function host 2 having an arithmetic processing module. In fig. 8, two function hosts 2 and one measurement and control host 1 are connected in a stacked manner.

The preferable scheme is as shown in fig. 7, and further includes a master control platform, and the master control platform is electrically connected with the measurement and control host 1 through a bus. The main control platform is used for collecting data of the measurement and control host 1 and sending a control instruction. The main control platform can be an industrial personal computer.

In a further preferred scheme, as shown in fig. 8, the main control platform is electrically connected with the measurement and control host 1 through a bus, and the two function hosts 2 are connected with one measurement and control host 1 in a stacking manner. The system is convenient for operators to collect more data through the main control platform, and realizes more functions.

In a preferred scheme, the sensing module and the application module 3 are connected with the measurement and control host 1 or the functional host 2 through a standard interface 4 or in a wireless mode. Still be equipped with wireless communication module in observing and controling host computer 1 or functional host computer 2, for example WIFI module, zigbee module, lora module etc. from this structure, be convenient for test neotype wireless sensor. The wireless transmission modules can also be used as external components and connected with the measurement and control host 1 or the functional host 2 through a communication interface, such as a USB interface.

the input module comprises a keyboard, a mouse, a mobile terminal and a touch screen. The touch screen in the embodiment is a liquid crystal screen for setting input, detecting output and displaying, and can observe and display sensing and measurement data in real time.

In a preferred scheme, as shown in fig. 3, the display module and the input module are touch screens, the touch screens and the standard interface 4 are arranged on a panel 10, and the panel 10 is connected with the housing 9 in an inserting manner; therefore, the touch screen and the standard interface 4 are convenient to upgrade, and the maintenance is also convenient.

The bearing plate 8 is fixedly connected with the shell 9, the main board is fixedly connected with the bearing plate 8, and the signal processing module and the operation processing module are fixedly arranged on the main board 7. Therefore, the mainboard can be conveniently upgraded.

The mainboard 7 is provided with an expansion high-speed signal processing module interface, such as a PCI interface or a PCIe interface; the mainboard 7 can superpose and expand the high-speed signal processing module through the interface, and can select expansion and non-expansion according to requirements, so that the flexible application is realized, the application requirements are met, and meanwhile, the cost is reduced.

The supporting plate 8 is provided with a plurality of long round holes arranged in an array. Therefore, the structure is convenient to adapt to the mainboards with different layouts. Further improving the convenience of upgrading.

The utility model discloses carried out great innovation on the basis of the current product in market, broken the development mode of traditional laboratory glassware, adopted modular design, cordwood system to use, provided the space of more study, development, innovation of user, simplified the application of product simultaneously and built, standard interface and modular design improve the stability and the maintainability of product. Meanwhile, based on the modern Internet of things technology, network management and big data processing are achieved, and the intellectualization and resource recycling of the equipment are improved.

1. The system can be combined and applied in a superposition mode, and the combination of the system is connected with the bottom plane connecting contact 62 through the top compressible elastic ejector pin 61, so that power supply, communication and system building are completed.

2. Each functional module is independent of a host, so that the functions are clear and the universality is strong; the interface is unified, and easy extension and maintenance are realized.

3. The sensing and application module 3 adopts a socket fool-proof design, so that the compatibility of the module is effectively improved, and meanwhile, the safety of external equipment and the safety of the external equipment are ensured.

4. The industrial touch screen is adopted for operation and display, complicated knobs, switches and keys are achieved through visual touch operation, the equipment operation panel is simplified, the operability is improved, and the failure rate is reduced. Preferably, the mobile terminal can also be used for operation. The mobile terminal is communicated with the measurement and control host 1 through a WIFI interface or other network interfaces so as to set experiment parameters and acquire experiment data.

5. The two sides of the shell of the utility model are provided with the heat dissipation holes, and the heat dissipation problem of the system is solved by adopting the design of the air duct with left and right convection; the louvre adopts intensive mesh mode to realize, guarantees that the air volume can restrain outside dust and debris simultaneously and get into, improves system stability and guarantees inside safety.

6. The utility model discloses a bottom boss and top recess design make whole appearance more flexible not stiff, can guarantee simultaneously stack from top to bottom more pleasing to the eye and more stable, and the protruding height of bottom just in time can be put the finger and be convenient for carry and move when placing the mesa.

7. The front panel and the rear panel of the main machine adopt the design of independent replaceable parts, so that the main shell body is kept consistent, and meanwhile, the panels are convenient to replace so as to be suitable for different main machines.

8. The top elastic thimble 61 adopts a concave design and is matched with a cover plate, so that the cover plate can be covered to effectively prevent dust when not in use, and the contact and equipment are protected.

9. The utility model discloses an engineering plastic shell and arc design do not have sharp-pointed edges and corners, and the colour is convenient to be changed multiple collocation, safe and reliable, nimble changeable.

The above embodiments are merely preferred technical solutions of the present invention, and should not be considered as limitations of the present invention, and the features in the embodiments and the examples in the present application may be arbitrarily combined with each other without conflict. The protection scope of the present invention shall be defined by the claims and the technical solutions described in the claims, including the technical features of the equivalent alternatives as the protection scope. Namely, equivalent alterations and modifications within the scope of the invention are also within the scope of the invention.

Claims

1. A general expandable engineering and experiment system is characterized in that: the system comprises a measurement and control host (1), wherein a plurality of standard interfaces (4) are arranged on the measurement and control host (1), the standard interfaces (4) are used for being electrically connected with a sensing module and an application module (3), and the standard interfaces (4) are electrically connected with an operation processing module through a signal processing module;

the display module and the input module are electrically connected with the operation processing module;

the system is also provided with a functional host (2), and the functional host (2) is electrically connected with the measurement and control host (1) through a connector (6) and a bus;

2. The universal extensible engineering and experimentation system as recited in claim 1, further comprising: the standard interface (4) is provided with a plurality of pins, part of the pins are connected with the analog circuit and are used for accessing and outputting analog signals, and part of the pins are connected with the digital circuit and are used for inputting and outputting digital signals.

3. The universal extensible engineering and experimentation system as recited in claim 2, further comprising: the connector (6) comprises an elastic thimble (61) and a corresponding connecting contact (62) which are respectively positioned on the measurement and control host (1) and the functional host (2).

4. The universal extensible engineering and experimentation system as set forth in claim 3, wherein: the elastic ejector pins (61) and the connecting contacts (62) are respectively arranged at the top and the bottom of the measurement and control host (1) and the functional host (2) so that the measurement and control host (1) and the functional host (2) are connected in a stacking mode.

5. The universal extensible engineering and experimentation system as claimed in claim 3 or 4, wherein: the functional host (2) comprises one or more of a power supply device, a load device, a temperature control device, a motor driving device, a signal source device, an arithmetic device and an optical power meter.

6. The universal extensible engineering and experimentation system as recited in claim 1, further comprising: the sensing module and the application module (3) are connected with the measurement and control host (1) or the functional host (2) through a standard interface (4) or in a wireless mode.

7. The universal extensible engineering and experimentation system as recited in claim 6, further comprising: the sensing module and the application module (3) comprise a temperature sensor, a humidity sensor, a pressure sensor, a displacement sensor, a photoelectric sensor, a Hall sensor, a magnetic sensor and the like, and a light power sensor, an illuminance sensor, a pyroelectric sensor, an electric translation table, a motor, a resistance load, an electric control valve and a light source.

8. The system of any one of claims 1 to 4 and 6 to 7, wherein: the display module comprises a display screen, a touch screen and a mobile terminal;

9. The universal extensible engineering and experimentation system as recited in claim 8, further comprising: the keyboard, the mouse, the mobile terminal and the touch screen are electrically connected with the operation processing module through a communication interface;

10. The universal extensible engineering and experimentation system as recited in claim 1, further comprising: the display module and the input module are touch screens, the touch screens and the standard interface (4) are arranged on a panel (10), and the panel (10) is connected with the shell (9) in an inserting manner;

the supporting plate (8) is fixedly connected with the shell (9), the main board is fixedly connected with the supporting plate (8), and the signal processing module and the operation processing module are fixedly arranged on the main board (7);

the mainboard (7) is provided with an expansion high-speed signal processing module interface;

the supporting plate (8) is provided with a plurality of long round holes which are arranged in an array.