CN202614279U - Detection ball capable of realizing motion measurement of ball mill medium - Google Patents

Abstract

Provided is a detection ball capable of realizing motion measurement of a ball mill medium, comprising an upper hemisphere and a lower hemisphere which are connected, wherein a data acquisition module composed of a temperature and pressure sensor, a magneto-resistive sensor, a three-dimensional acceleration sensor and a three-axis gyroscope is arranged between the upper hemisphere and the lower hemisphere; a single chip computer control module comprising a controller is arranged between a data storage module and the upper hemisphere; and the single chip computer control module constitutes the minimum system of a single chip computer by a crystal oscillator and a power switch. The utility model provides a detection ball capable of realizing motion measurement of a ball mill medium and monitoring the working state of the medium in real time and has good practicability.

Description

Can realize the detection ball that the bowl mill medium motion is measured

Technical field

The utility model relates to bowl mill, especially a kind of bowl mill medium motion measurement mechanism.

Background technology

The use of bowl mill in above-mentioned industrial circle had one very long period; But the problem that the high production capacity of its power consumption is low never is well solved; The characteristics of motion of ball-milling medium does not have very clear and definite quilt to disclose out yet, and the setting of grinding operation each item running parameter does not have accurate and unified standard yet.The new approaches, the new method that address these problems constantly are suggested, and as changing the shape of liner plate, change the big or small proportioning of ball-milling medium; Change a series of measures such as filling rate and rotational speed rate; Though some index of bowl mill is improved to a certain extent, basic problem does not obtain solution in essence, one of them major reason; Be to lack effective testing equipment; Can't observe and analyze the different motion state that different parameters produces, thus carry out the support that the research of correlation theory has just lacked test figure, so can't obtain new theory.

Summary of the invention

In order to overcome the deficiency that existing bowl mill can't effectively obtain the medium duty, the utility model provides a kind of can monitor the detection ball that medium duty, the good bowl mill the realized medium motion of practicality are measured in real time.

The utility model solves the technical scheme that its technical matters adopted:

A kind of detection ball of realizing that the bowl mill medium motion is measured; Said detection bag is drawn together episphere and lower semisphere; Said episphere is connected with lower semisphere, is provided with between said episphere and the lower semisphere by temperature and air pressure sensor, magnetoresistive transducer, three dimension acceleration sensor and three data acquisition modules that he spiral shell appearance is formed; Data are preserved between module and the episphere and are provided with the single chip control module of being made up of controller, and said Single-chip Controlling mould constitutes single-chip minimum system by crystal oscillator and power switch.

Further, said single chip control module is connected with data-carrier store, RS232 interface and communication pilot lamp.

The technical conceive of the utility model is: ball-milling medium motion state deriving means mainly comprises three major parts; At first be to detect nodule number according to acquisition module; This module realizes obtaining data functions such as the 3-axis acceleration of medium when the motion, three axis angular rates, three magnetic components, temperature, air pressure through the MEMS inertia device; Next is to detect nodule number according to memory module, and this module can realize the memory function of data, is control module at last; This module is preserved through the program control data collection and the data that write; Simultaneously this module is expanded RS232 communication interface and the pilot lamp of communicating by letter outward, like this can be so that the data that will be saved in the storer are sent to analyzing and processing in the host computer, and with the function of the motion state of acquisition medium.

The beneficial effect of the utility model mainly shows: can monitor medium duty (locus, three speed and acceleration) in real time, practicality is good.

Description of drawings

Fig. 1 is the front view (FV) that can realize the detection ball of bowl mill medium motion measurement.

Fig. 2 is the back view that can realize the detection ball of bowl mill medium motion measurement.

Fig. 3 is the circuit hardware structured flowchart that detects ball.

Fig. 4 detects the circuit hardware schematic diagram of asking.

Fig. 5 is the structural frames of motion measurement unit.

Fig. 6 is to detect carrier coordinate system that ball is the main body and to be the synoptic diagram of the motionless spherical measurement coordinate system of center fixation with the ball mill barrel.

Embodiment

Below in conjunction with accompanying drawing the utility model is further described.

With reference to Fig. 1～Fig. 6; A kind of detection ball of realizing that the bowl mill medium motion is measured; Have episphere 1, lower semisphere 2; Upper and lower hemispheres is provided with between the upper and lower hemispheres by temperature and air pressure sensor 3, magnetoresistive transducer 5, three dimension acceleration sensor 6 and three data acquisition modules that he spiral shell appearance 7 is formed through being threaded and bayonet socket is fixed; Data are preserved between module and the episphere and are provided with the single chip control module of being made up of controller 8, and this module constitutes single-chip minimum system by crystal oscillator and power switch; Control module is expanded data-carrier store 12, RS232 interface 11, communication pilot lamp 9 outward; Be convenient to the storage of data like this and data be sent in the machine machine corresponding software handle, detect inner each intermodule of ball through iic bus carry out data transmission, by 4 power supplies of 5V lithium battery.

Structural frames such as Fig. 5 of motion measurement unit are as follows.

In measuring system, the carrier coordinate system that is the main body with the detection ball as shown in Figure 6 is arranged, and (b is X _bY _bZ _bAxle) and be the motionless spherical measurement coordinate system of center fixation (p system, X with the ball mill barrel _pY _pZ _pAxle), and from b is that transformational relation to p system can obtain through three rotations of following order:

Through above-mentioned transformational relation, that is:

$\left[\begin{array}{c}{x}_b\\ y_b\\ z_b\end{array}\right]=\left[\begin{array}{ccc}1& 0& 0\\ 0& \cos \mathrm{\γ}& \sin \mathrm{\γ}\\ 0& -\sin \mathrm{\γ}& \cos \mathrm{\γ}\end{array}\right]\left[\begin{array}{ccc}\cos \mathrm{\θ}& 0& -\sin \mathrm{\θ}\\ 0& 1& 0\\ \sin \mathrm{\θ}& 0& \cos \mathrm{\θ}\end{array}\right]\left[\begin{array}{ccc}\cos \mathrm{\ψ}& \sin \mathrm{\ψ}& 0\\ -\sin \mathrm{\ψ}& \cos \mathrm{\ψ}& 0\\ 0& 0& 1\end{array}\right]\left[\begin{array}{c}{x}_p\\ y_p\\ z_p\end{array}\right]$

Promptly have $\left[\begin{array}{c}{x}_b\\ y_b\\ z_b\end{array}\right]=T\left[\begin{array}{c}{x}_p\\ y_p\\ z_p\end{array}\right]$

Is the strapdown matrix from the carrier coordinate axis to the direction cosine matrix T that measures the coordinate axis conversion, upgrades the strapdown matrix T through resolving, and just can obtain the mapping relations between each step-length two coordinate system.

Medium is done space three-dimensional motion in barrel, and motion is decomposed and the motion of medium in cylindrical shell can be decomposed into space line motion and spatial rotational based on space three-dimensional, can be known by Newton's law and kinematical equation and energy equation:

Have during the space line motion: $\left\{\begin{array}{c}{\stackrel{\→}{F}}^b=m{{\stackrel{\→}{a}}^b}_x+m{{\stackrel{\→}{a}}^b}_y+m{{\stackrel{\→}{a}}^b}_z\\ {\stackrel{\→}{a}}^b={{\stackrel{\→}{a}}^b}_x+{{\stackrel{\→}{a}}^b}_y+{{\stackrel{\→}{a}}^b}_z\\ {\stackrel{\→}{v}}^b={{\stackrel{\→}{v}}_0}^b+{\∫}_{t0}^t{\stackrel{\→}{a}}^b\mathrm{Dt}\\ {\stackrel{\→}{s}}^b={{\stackrel{\→}{s}}_0}^b+{\∫}_{t0}^t{\stackrel{\→}{v}}^b\mathrm{Dt}\end{array}\right.$

Have during spatial rotation: $\left\{\begin{array}{c}{\stackrel{\→}{\mathrm{\ω}}}^b={{\stackrel{\→}{\mathrm{\ω}}}^b}_x+{{\stackrel{\→}{\mathrm{\ω}}}^b}_y+{{\stackrel{\→}{\mathrm{\ω}}}^b}_z\\ {\stackrel{\→}{\mathrm{\θ}}}^b={{\stackrel{\→}{\mathrm{\θ}}}_0}^b+{\∫}_{t0}^t{\stackrel{\→}{\mathrm{\ω}}}^b\mathrm{Dt}\\ {\stackrel{\→}{\mathrm{\α}}}^b=\frac{d{\stackrel{\→}{\mathrm{\ω}}}^b}{\mathrm{Dt}}\end{array}\right.$

Just can obtain acceleration, the angular velocity under the measurement coordinate system through the acceleration under the carrier coordinate system that sensor acquisition obtains, angular velocity data through above-mentioned two coordinate Mapping relation, just can arrive attitude information, positional information, the velocity information that detects ball through the three-dimensional space motion equation solver again.

Claims (2)

1. the detection ball that can realize that the bowl mill medium motion is measured; It is characterized in that: said detection bag is drawn together episphere and lower semisphere; Said episphere is connected with lower semisphere, is provided with between said episphere and the lower semisphere by temperature and air pressure sensor, magnetoresistive transducer, three dimension acceleration sensor and three data acquisition modules that he spiral shell appearance is formed; Data are preserved between module and the episphere and are provided with the single chip control module of being made up of controller, and said Single-chip Controlling mould constitutes single-chip minimum system by crystal oscillator and power switch.

2. the detection ball of realizing that the bowl mill medium motion is measured as claimed in claim 1 is characterized in that: said single chip control module is connected with data-carrier store, RS232 interface and communication pilot lamp.

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