CN106650082B - Intelligent traceability electronic scale assessment system - Google Patents

Abstract

The invention discloses an intelligent traceability electronic scale evaluation system, which comprises: the system comprises an embedded control module, a small signal detection unit module, a traceability tag information pickup module, a local transaction information acquisition module and a cloud transmission protocol realization and management module. By adopting the technical scheme of the invention, the performance evaluation can be completed on the intelligent traceability electronic scale product.

Description

Intelligent traceability electronic scale assessment system

Technical Field

The invention belongs to the field of electronic communication, and relates to an intelligent traceability electronic scale evaluation system.

Background

At present, commercial intelligent electronic scales are increasingly developed, and the commercial intelligent electronic scales are intelligent electronic equipment which takes intelligent metering as a standard and a sensor and an electronic measurement technology as a basis and integrates a mobile interconnection technology and an embedded application development technology. The development of electronic scale equipment also starts to turn to multifunctional intelligent equipment such as intelligent input, application field expansion (such as product traceability de) and multi-machine equipment interconnection from single commodity metering equipment.

At present, a small signal detection technology, an embedded application technology and a system interconnection technology are important technologies in the field of information technology application. Intelligent electronic scale equipment generally needs to design corresponding hardware and software systems. Aiming at the system functions and product performance of the designed intelligent electronic scale, a quick and effective evaluation system is needed.

Disclosure of Invention

The invention aims to provide an intelligent traceability electronic scale evaluation system which can complete performance evaluation on an intelligent traceability electronic scale product.

In order to achieve the purpose, the invention adopts the following technical scheme:

an intelligent traceability electronic scale evaluation system comprises: an embedded control module, a small signal detection unit module, a tracing label information pickup module, a local transaction information acquisition module and a cloud transmission protocol realization and management module, wherein,

the embedded control module is used for coordinating the work of each functional module unit in the intelligent traceability electronic scale evaluation system, completing the simulation setting of the intelligent traceability electronic scale structure and the function evaluation test of the working process, and recording the test data;

the small signal detection unit module is used for converting the analog electric signal containing the pressure information into a digital signal required by the embedded control module;

the traceability label information picking module is used for finishing traceability label information picking work through the RFID radio frequency label card reader;

the local transaction information acquisition module is used for realizing the human-computer interaction function of the prototype machine and finishing the evaluation process of the human-computer interaction function;

and the cloud transmission protocol implementation and management module is used for implementing the connection of a physical link and a UDP (user Datagram protocol) or TCP (Transmission control protocol) stack established with the cloud and the implementation process of an application layer protocol in the data transmission process.

Preferably, the small signal detection unit module includes: an external pressure sensor, an analog signal source, a preamplifier circuit, a controllable gain amplifier and an A/D conversion circuit, wherein,

the external pressure sensor module and the analog signal source are used for providing a detected signal and accessing the detected signal to the preamplifier circuit;

the pre-amplification circuit is used for amplifying the direct current small signal;

the controllable gain amplifier is used for adjusting the signal amplitude range of small signals with different magnitudes of the prototype of the established evaluation system, and completing the matching process of the amplitude of the input signal in one evaluation process;

and the A/D analog-to-digital conversion circuit converts the analog signal into a digital signal.

The system designer provided by the invention can conveniently complete software adjustment according to the designed hardware structure of the component with more flexible application, thereby forming an application system in a shorter time and applying the structure and performance indexes and simulation of the application system. Therefore, the design period can be shortened, the system design cost can be reduced, and the success rate of the small-signal measurement system design can be improved.

Drawings

FIG. 1 is a diagram of an evaluation system of a wearable ecg signal monitoring system;

FIG. 2 is a block diagram of embedded control modules;

fig. 3 is a block diagram of a small signal detection unit module.

Detailed Description

The embodiment of the invention provides an intelligent traceability electronic scale evaluation system, which comprises: the system comprises an embedded control module, a small signal detection unit module, a traceability tag information pickup module, a local transaction information acquisition module and a cloud transmission protocol realization and management module.

1. The embedded control module:

the intelligent traceability electronic scale evaluation system is used for coordinating the work of each functional module unit in the intelligent traceability electronic scale evaluation system, completing the simulation setting of the intelligent traceability electronic scale structure and the function evaluation test of the working process, recording the test data and giving out evaluation results and suggestions. The embedded control module is composed of an embedded CPU, a man-machine interaction key, a data storage unit, a universal debugging interface unit, a display unit, an external data bus interface unit, an external control bus interface unit, a USB communication interface unit and other functional units. The embedded control module is shown in a block diagram in fig. 2.

a) And an embedded CPU: the system hosts a CPU. The model number can be ARM Cortex-A8 series or more, such as S5PV 210. The selected CPU should be capable of running an operating system, such as the Linux-based Android operating system with open source code. The written evaluation software can run on the operating system, and the writing and the migration of the evaluation software are facilitated.

b) And the man-machine interaction key is used for completing the information input by an operator. A universal interface coding keyboard can be searched, and when the system software platform is based on an operation system, a USB interface standard keyboard, a capacitive touch screen or a soft keyboard used on a display screen can be selected.

c) And a data storage unit: for storing user program code and process data. The memory module comprises a dynamic memory, such as K4S561632C-TC75, a nonvolatile memory, such as NOR type U-K9F1208UDM-YC80, and a NAND type FLASHSST39LF160 memory module, or one or the combination of the two. The universal removable memory can also be extended by means of a USB interface.

d) And the universal debugging interface unit is mainly used for testing the interior of the CPU and simulating and debugging the system application program. Can be used for CPU online program debugging. A jtag (joint Test Action group) debug interface may be used here.

e) And the display unit is used for realizing a UI (user interface) of the intelligent traceability electronic scale evaluation system and displaying system prompt information, evaluation process information and evaluation result information. The TFT color screen can be selected, so that the display information is diversified in various forms, such as characters, icons, color labels and the like.

f) And an external data bus interface unit: the data bus for connecting the embedded control module with the external function module should be a bidirectional 8-bit or 16-bit data bus with certain loading capacity, and needs to have isolation protection with the internal data bus of the embedded control module.

g) And an external control bus interface unit: and the control bus is used for connecting the embedded control module with the external function module. The control function can be completed by the general I/O port line of the embedded CPU, and the attention to the signal flow direction and the control bus interface protection are needed.

h) And a communication interface unit: the USB interface comprises two RS232 communication interfaces, and the USB main interface comprises more than two USB main interfaces which at least accord with the 2.0 standard. The method is used for expanding the general function modules, such as a mobile memory, a keyboard, a Bluetooth module (convenient for data transmission between the expansion module and the mobile terminal), and the like.

2. Small signal detection unit module:

the small signal detection unit module comprises an external pressure sensor, an analog signal source, a preamplifier circuit, a controllable gain amplifier and an A/D conversion circuit, converts an analog electric signal containing pressure information into a digital signal required by an embedded CPU, and is composed of a block diagram as shown in figure 3.

a) And the external pressure sensor module or the analog signal source provides a detected signal and is connected to the preamplifier circuit.

b) And a pre-amplification circuit: and amplifying the direct current small signal. The low-temperature drift direct current instrument can be selected to amplify the interior device in the interior decoration.

c) And a controllable gain amplifier: the method can facilitate users to flexibly adjust the amplitude range of the signal for small signals with different magnitudes of the prototype of the established evaluation system, and complete the matching process of the amplitude of the input signal in one evaluation process. In order to build an evaluation process for the automatic test.

d) And A/D: and the analog-to-digital conversion circuit is used for converting the analog signal into a digital signal. The internal reference, internal clock and A/D conversion chip with more than 14 bits can be selected, and the requirement on conversion speed is not very high. A/D conversion chip can be selected independently or a CPU can be embedded with an A/D interface controller.

3. The tracing label information picking module:

and finishing the picking work of the product tracing information. The labels commonly used at present include bar codes, non-contact radio frequency labels and the like. The module can adopt a one-dimensional or two-dimensional bar code card reader, an RFID radio frequency tag card reader and the like to finish the information pickup work of the traceable tag. The card reader can be designed to be a special interface which is connected with the embedded control module through an external bus, or the card reader with a universal serial interface is connected with the embedded control module through a communication interface unit carried by the embedded control module.

4. The local transaction information acquisition module:

the method is used for the man-machine interaction function of the prototype. The system can be designed into a special keyboard and a special display module, and is connected with the embedded control module through an external bus, or the keyboard and the display module of the embedded control module are selected to realize the man-machine interaction function of the prototype machine, so as to complete the evaluation process of the man-machine interaction function.

5. Cloud transmission protocol implementation and management module:

the method realizes the connection of a physical link and a UDP (or TCP) protocol stack established with the cloud and the realization process of an application layer protocol in the data transmission process.

The invention takes an embedded control module as a core technology and a small signal detection unit as a basis, and is assisted by a tracing tag information pickup module, a local transaction information acquisition module and a cloud transmission protocol realization and management module.

At the beginning of the development of intelligent traceability electronic scale products, the embedded control module provided by the system can be utilized, the unit module is added on the external bus, so that an intelligent traceability electronic scale prototype model machine is quickly built, and the method provided by the system is used for carrying out function verification on the prototype model machine.

The electronic scale prototype built by the invention adopts a modular structure under the control of an embedded system, and the parameters of the unit modules and the composition structure of the electronic scale prototype can be flexibly adjusted according to the difference between the evaluation result and the requirement, so that the joint debugging test of the system is completed to meet the functional requirement.

The system designer provided by the invention can conveniently complete software adjustment according to the designed hardware structure of the component with more flexible application, thereby forming an application system in a shorter time and applying the structure and performance indexes and simulation of the application system. Therefore, the design period can be shortened, the system design cost can be reduced, and the success rate of the small-signal measurement system design can be improved.

Claims (1)

1. An intelligent traceability electronic scale evaluation system is characterized by comprising: an embedded control module, a small signal detection unit module, a tracing label information pickup module, a local transaction information acquisition module and a cloud transmission protocol realization and management module, wherein,

the embedded control module is used for coordinating the work of each functional module unit in the intelligent traceability electronic scale evaluation system, completing the simulation setting of the intelligent traceability electronic scale structure and the function evaluation test of the working process, and recording the test data;

the small signal detection unit module is used for converting the analog electric signal containing the pressure information into a digital signal required by the embedded control module;

the traceability label information picking module is used for finishing traceability label information picking work through the RFID radio frequency label card reader;

the local transaction information acquisition module is used for realizing the human-computer interaction function of the prototype machine and finishing the evaluation process of the human-computer interaction function;

the cloud transmission protocol realization and management module is used for realizing the connection of a physical link and a UDP (user Datagram protocol) or TCP (Transmission control protocol) stack established with the cloud and the realization process of an application layer protocol in the data transmission process;

the small signal detection unit module includes: an external pressure sensor, an analog signal source, a preamplifier circuit, a controllable gain amplifier and an A/D conversion circuit, wherein,

the external pressure sensor module and the analog signal source are used for providing a detected signal and accessing the detected signal to the preamplifier circuit;

the pre-amplification circuit is used for amplifying the direct current small signal;

the controllable gain amplifier is used for adjusting the signal amplitude range of small signals with different magnitudes of the prototype of the established evaluation system, and completing the matching process of the amplitude of the input signal in one evaluation process;

and the A/D analog-to-digital conversion circuit converts the analog signal into a digital signal.

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