CN207123811U

CN207123811U - The wearable data acquisition device that human action is caught

Info

Publication number: CN207123811U
Application number: CN201720899062.XU
Authority: CN
Inventors: 姚招华
Original assignee: Beijing Micro Cloud Software Co Ltd
Current assignee: Shenzhen Yitian Internet Technology Co., Ltd
Priority date: 2017-07-24
Filing date: 2017-07-24
Publication date: 2018-03-20
Anticipated expiration: 2027-07-24

Abstract

The utility model proposes human action catch wearable data acquisition device, belong to motion capture technical field, including：Microcontroller, JTAG debugging interfaces circuit, acceleration analysis module, power module and communication interface circuit, JTAG debugging interfaces circuit, acceleration analysis module, power module and the communication interface circuit are connected with the microcontroller respectively, the microcontroller is used for the scheduling for completing all events, the microcontroller uses microcontroller chip MSP430F5438, and the acceleration analysis module selects 3-axis acceleration sensor ADXL345.The utility model data acquiring mode is freer, and data acquisition equipment is more portable, more focuses on the interaction impression of hommization.

Description

The wearable data acquisition device that human action is caught

Technical field

The utility model belongs to motion capture technical field, and the wearable data that especially a kind of human action is caught are adopted Acquisition means.

Background technology

In general, carrying out the research of human action seizure, data acquisition equipment needs to meet the following requirements：(1) Robustness and durability：This is the basic demand of collecting device；(2) sample rate：There are enough sample rates, real-time could be met With reflection real motion information requirement, analyze human action behavior the characteristics of, the sample rate of sensor need to typically reach about 100Hz；(3) dress light：Acquisition system needs convenient wearing, and the comfort level of the user of data acquisition work experiences very heavy Will；(4) data transfer：Can use data transfer mode wirelessly or non-wirelessly, no matter which kind of mode, acquisition system data transfer Reliability and stability be basic guarantee；(5) low-power consumption：In order to reduce cost, increase the service life, this requires the work(of system Consumption and volume are sufficiently small, and this is also that modern electronic equipment makes the basic problem that must take into consideration.

Utility model content

The data acquisition request caught for human action, human action provided by the utility model are caught wearable Data acquisition device.

The utility model specifically adopts the following technical scheme that realization：

The wearable data acquisition device that a kind of human action is caught, including：Microcontroller, JTAG debugging interfaces electricity Road, acceleration analysis module, power module and communication interface circuit, the JTAG debugging interfaces circuit, acceleration analysis mould Block, power module and communication interface circuit are connected with the microcontroller respectively, and it is busy that the microcontroller is used for completion institute The scheduling of part, the microcontroller use microcontroller chip MSP430F5438, and the acceleration analysis module is accelerated from three axles Spend sensors A DXL345.

Preferably, the power module includes external dc power and host computer USB interface is powered.

Preferably, the external dc power is provided by 2 section 1.5V dry cells.

The wearable data acquisition device that human action provided by the utility model is caught, its advantage be,

1st, data acquiring mode is freer, during using the collecting device gathered data for being integrated with acceleration transducer, completely Not by external condition, the collecting work of data can be completed without constraint, more freely in true environment.

2nd, data acquisition equipment is more portable, because acceleration transducer has small size, light weight, high sensitivity, power consumption The characteristics of low, it is easily integrated into the portable sets such as mobile phone, game paddle, wrist-watch, therefore is easy to be placed on body, makes to obtain Take action data very convenient.

3rd, the interaction impression of hommization is more focused on, the data acquisition equipment based on acceleration transducer is worn on human body When, be active obtaining people acceleration information, without the passive participation of experimenter, as long as having the generation of action behavior, just Acceleration information can be obtained.

Brief description of the drawings

Fig. 1 is the theory diagram of data acquisition device；

Fig. 2 is JTAG debugging interface circuit theory diagrams；

Fig. 3 is ADXL345 pin configuration figure；

Fig. 4 is ADXL345 and MSP430 microcontrollers interface circuit figure；

Fig. 5 is power module circuitry design principle figure；

Fig. 6 is communication interface circuit figure.

Embodiment

To further illustrate each embodiment, the utility model is provided with accompanying drawing.These accompanying drawings are in the utility model discloses A part for appearance, it can coordinate the associated description of specification to explain the running of embodiment original mainly to illustrate embodiment Reason.Cooperation refers to these contents, and those of ordinary skill in the art will be understood that other possible embodiments and this practicality are new The advantages of type.Component in figure is not necessarily to scale, and similar element numbers are conventionally used to indicate similar component.

The utility model is further illustrated in conjunction with the drawings and specific embodiments.

As shown in figure 1, the wearable data acquisition device that a kind of human action that the present embodiment provides is caught, including： Microcontroller, JTAG debugging interfaces circuit, acceleration analysis module, power module and communication interface circuit.

Microcontroller is the core of whole system, the scheduling of all events in completion system.In the present embodiment, microcontroller Device uses microcontroller chip MSP430F5438, and this is a 16 super low-power consumption processors that TI companies release.It is internally integrated 256KB FLASH memory, 16KBRAM, reduced instruction set computer (RISC), four Generalized Communication Interfaces and 12 moduluses turn Change.The microcontroller has low in energy consumption, massive store space, abundant hardware resource, writes that program is simple, debugging routine The advantages that facilitating.

The JTAG debugging interfaces of the present embodiment, JTAG debugging interface circuit theory diagrams are as shown in Figure 2.It is micro- in MSP430 series There is the logic interfacing that supply JTAG is used inside controller, meanwhile, also there are several registers to be connected to inside JTAG On MSP430 internal data address bus, therefore all moneys inside MSP430 Series of MCU can be accessed with JTAG Source, including the read-write operation to FLASH.The JTAG debugging interfaces of the present embodiment, can with external JTAG emulators be used for pair MSP430F5438 emulation, debugging and programming.The main connecting line of JTAG debugging interfaces have TMS, TCK, TDI, TDO, RST, TEST。

The acceleration analysis module of the present embodiment selects 3-axis acceleration sensor ADXL345, and it has three axially to detect Function, ADXL345 are especially suitable for mobile device use, and it can be applied in terms of the acceleration analysis of tilt detection, for surveying Dynamic acceleration caused by measuring static weight acceleration, or measurement motion and impact, and apply 3-axis acceleration sensor ADXL345 can make portable set intelligently respond the change of position, orientation and movement.ADXL345 using 3mm × 5mm × 1mm, 14 pin small ultra-thin Plastic Packages, pin configuration figure are as shown in Figure 3.ADXL345, which will be arranged on, the pcb board supported firmly On position.This is due to that the measurement of acceleration is influenceed by pcb board resonance degree, if ADXL345 is arranged on unsupported PCB positions, because PCB vibration is not suppressed, obvious measurement error is may result in, and then influence action acceleration number According to accurate measurement.The present embodiment designs double 14 core socket, for ADXL345 acceleration sensor modules to be fixedly mounted. The interface circuit of ADXL345 and MSP430 microcontrollers is as shown in Figure 4.

The work of whole data acquisition device is ensured by two kinds of power supply modes：First, use external dc power Power supply；Second, powered using host computer USB interface.When taking the external power source to power, power supply is provided by 2 section 1.5V dry cells, full The requirement of sufficient low-power consumption.In circuit design, from 150mA low noise LDO voltage regulator SPX5205 chips, 5V voltages are filled 3V is changed to, meets the use of other modules.Power unit circuit design principle figure is as shown in Figure 5.

Hardware acquisition system devises RJ45 interfaces, for data transfer.Pass through the processing mode of intermediate steps, i.e. network interface RS485 serial ports is converted to, RS485 serial ports is again converted to USB interface, and whole harvester of testing is led in a manner of wire communication USB interface is crossed to be communicated with computer in real time.The acceleration of action signal can be checked in real time in data acquisition interface Information.Communication interface circuit is as shown in Figure 6.The present embodiment uses 38400bps baud rate, disclosure satisfy that the reality of data transfer Shi Yaoqiu.

Although specifically showing and describing the utility model with reference to preferred embodiment, those skilled in the art should This is understood, is not departing from the spirit and scope of the present utility model that appended claims are limited, in form and details On the utility model can be made a variety of changes, be the scope of protection of the utility model.

Claims

A kind of 1. wearable data acquisition device that human action is caught, it is characterised in that including：Microcontroller, JTAG are adjusted Interface circuit, acceleration analysis module, power module and communication interface circuit are tried, the JTAG debugging interfaces circuit, is accelerated Degree measurement module, power module and communication interface circuit are connected with the microcontroller respectively, and the microcontroller has been used for Into the scheduling of all events, the microcontroller is selected using microcontroller chip MSP430F5438, the acceleration analysis module 3-axis acceleration sensor ADXL345.
2. the wearable data acquisition device that human action according to claim 1 is caught, it is characterised in that the electricity Source module includes external dc power and host computer USB interface is powered.
3. the wearable data acquisition device that human action according to claim 2 is caught, it is characterised in that described outer Portion's dc source is provided by 2 section 1.5V dry cells.