CN203772380U - Dynamic material weighing device for digging bucket of excavator - Google Patents

Abstract

The utility model discloses a dynamic material weighing device for the digging bucket of an excavator. The dynamic material weighing device is capable of performing weighing operation when the excavator is under a working condition and has high digging efficiency. The dynamic material weighing device comprises a weight acquisition unit, a microprocessor, and a weight display unit. The weight acquisition unit comprises inclination angle sensors, gyroscopes, and pressure sensors. The pressure sensors are installed on the front chamber and rear chamber of the large arm oil cylinder and the bucket lever oil cylinder of the excavator. The inclination angle sensors and the gyroscopes are installed on the large arm, the bucket lever, and the digging bucket of the excavator. The microprocessor comprises a data acquisition chip and a data analysis chip. The output end of the microprocessor is connected with the weight display unit. The inclination angle sensors, the gyroscopes, and the pressure sensors are all connected with the data acquisition chip. The input end of the microprocessor is connected with a signal trigger device used for triggering the data acquisition chip of the microprocessor to start or stop acquiring data. The signal trigger device is in triggering control connection with the input end of the microprocessor.

Description

A kind of excavator bucket material dynamic weigher

Technical field

The utility model relates to a kind of weighing device, particularly a kind of dynamic weigher for material on power shovel.

Background technology

In using hydraulic excavator process, when if user need have weighing demand to the material of hydraulic excavator institute operation, generally to be divided into two step operations, first use hydraulic excavator scraper material to the indirect weighing device such as truck or weighbridge, recycling indirect weighing device weighs, this kind of weighting manner, if weighed, distance location charging place is far away or the quantities of weighing is larger, after material loading, needing so truck transhipment or hydraulic excavator to open to larger distance goes to weigh, so both wasted manpower, also waste financial resources, can not guarantee measuring accuracy.In order to address the above problem, existing market also has installs a weighing system of weighing for excavator bucket material on hydraulic excavator, as Chinese utility model patent a kind of excavator that disclosed publication number is 103407890A on November 27th, 2013 hangs thing weighing device and mode, it carrys out image data by the angular transducer on excavator and oil pressure sensor, and the data of this collection are sent in Programmable Logic Controller, and by the computing formula in Programmable Logic Controller, calculate the weight of excavator lifted weight, though it is high that this kind of weighing device has measuring accuracy, time saving and energy saving, the advantage that cost is low, but this weighing device is static weighing system, while weighing, need make static a period of time of work of excavator or rest on a specific attitude, make like this digging efficiency of excavator greatly reduce.

In view of this, the applicant furthers investigate the existing problem of the weighing device of existing excavator bucket material, then by this case, is produced.

Utility model content

The purpose of this utility model is to provide a kind of excavator bucket material dynamic weigher, and it can make excavator also can carry out weighing operation when work, without quitting work, has greatly improved the digging efficiency of excavator.

In order to reach above-mentioned purpose, solution of the present utility model is:

A kind of excavator bucket material dynamic weigher, comprise Weight acquisition unit, microprocessor and the display unit of weighing, above-mentioned Weight acquisition unit comprises obliquity sensor, gyroscope and pressure transducer, above-mentioned pressure transducer is provided with six, six pressure transducers are the corresponding chamber, front and back that is arranged on the big arm cylinder of excavator respectively, on the chamber, front and back of bucket thick stick oil cylinder of excavator and the chamber, front and back of the bucket cylinder of excavator, above-mentioned obliquity sensor and above-mentioned gyroscope are installed in the large arm of excavator, on bucket thick stick and scraper bowl, above-mentioned microprocessor and the above-mentioned display unit of weighing are arranged on respectively in the driving cabin of excavator, above-mentioned microprocessor has for gathering data acquisition chip and the data analysis to data acquisition chip of the data of Weight acquisition unit, the data analysis chip calculating, the output terminal of above-mentioned data acquisition chip is connected with the input end of above-mentioned data analysis chip, the output terminal of above-mentioned microprocessor is connected with the above-mentioned display unit of weighing, above-mentioned obliquity sensor, above-mentioned gyroscope and each above-mentioned pressure transducer all with input end be connected, the input end of above-mentioned microprocessor is connected with for triggering the data acquisition chip collection of above-mentioned microprocessor or the signal flip flop equipment stopping data collection, above-mentioned signal flip flop equipment comprise hall position sensor and with the suitable signal receiver of hall position sensor, above-mentioned hall position sensor is installed on big arm of digger, above-mentioned hall position sensor has upper magnetic steel and lower magnetic steel, and above-mentioned lower magnetic steel is arranged on the position apart from big arm of digger lower edge 3-8mm, above-mentioned upper magnetic steel is arranged on the position apart from big arm of digger upper edge 3-8mm, above-mentioned signal receiver is arranged in the driving cabin of excavator, above-mentioned hall position sensor is connected with the input end of above-mentioned signal receiver, the output terminal of above-mentioned signal receiver is connected with the input end of above-mentioned microprocessor.

Between above-mentioned Weight acquisition unit and above-mentioned microprocessor, be provided with signal condition module and A/D modular converter, the output terminal of above-mentioned obliquity sensor, gyroscope and pressure transducer is all connected with the input end of above-mentioned signal condition module, the output terminal of above-mentioned signal condition module is connected with the input end of above-mentioned A/D modular converter, and the output terminal of above-mentioned A/D modular converter is connected with above-mentioned data acquisition chip.

It is the integrated circuit (IC) chip of STM32F103 that above-mentioned data acquisition chip adopts its model, and it is the integrated circuit (IC) chip of TMS320F28335 that above-mentioned data analysis chip adopts its model, and above-mentioned data acquisition chip is connected with above-mentioned data analysis chip by CAN bus.

Above-mentioned microprocessor is also provided with the data-carrier store for storage microprocessor data, and above-mentioned data-carrier store is connected with above-mentioned microprocessor is two-way.

Above-mentioned data-carrier store comprises SDRAM storer and FLASH storer, and above-mentioned SDRAM storer and FLASH storer are connected with above-mentioned microprocessor is two-way respectively.

The output terminal of above-mentioned microprocessor is also connected with overweight alarm unit.

Adopt after such scheme; a kind of excavator bucket material dynamic weigher of the present utility model; when it measures on power shovel scraper bowl weight of material without excavator is shut down or fixing a certain angle; can in the transport process of excavator, to scraper bowl material, carry out weighing operation; greatly improved the digging efficiency of excavator, and it is simple and easy, easy to use to have operation, calculates accurately; the advantage that reliability is strong, is specially adapted to the excacation metering of the heavy constructions such as cubic metre of earth stone.

Accompanying drawing explanation

Fig. 1 is schematic block circuit diagram of the present utility model;

Fig. 2 is mathematical model of the present utility model.

Embodiment

In order further to explain the technical solution of the utility model, below by specific embodiment, the utility model is elaborated.

A kind of excavator bucket material dynamic weigher of the present utility model, as shown in Figure 1, comprise Weight acquisition unit 1, microprocessor 2, signal condition module 3, A/D modular converter 4, the display unit 5 of weighing, power supply 6 and crystal oscillator clock module 7, this Weight acquisition unit 1 comprises obliquity sensor 11, gyroscope 12 and pressure transducer 13, pressure transducer 13 is provided with six, six pressure transducers 13 are arranged on respectively the chamber, front and back of the big arm cylinder of excavator, on the chamber, front and back of bucket thick stick oil cylinder of excavator and the chamber, front and back of the bucket cylinder of excavator, obliquity sensor 11 and gyroscope 12 are installed in the large arm of excavator, on bucket thick stick and scraper bowl, microprocessor 2, signal condition module 3, A/D modular converter 4 and the display unit 5 of weighing are arranged on respectively in the driving cabin of excavator, microprocessor 2 has for gathering data acquisition chip 21 and the data analysis to data acquisition chip 21 of Weight acquisition unit 1, the data analysis chip 22 calculating, data acquisition chip 21 adopts the integrated circuit (IC) chip that its model is STM32F103, data analysis chip 22 adopts the integrated circuit (IC) chip that its model is TMS320F28335, data acquisition chip 21 is connected with data analysis chip 22 by CAN bus, each obliquity sensor 11, gyroscope 12 is connected with the input end of pressure transducer 13 equal signal condition modules 3, the output terminal of signal condition module 3 is connected with the input end of A/D modular converter 4, the output terminal of A/D modular converter 4 is connected with the input end of data acquisition chip 21, the output terminal of microprocessor 2 is connected with the display unit 5 of weighing, and microprocessor 2 is also connected with the signal flip flop equipment that gathers or stop gathering Weight acquisition unit 1 data for triggering the data acquisition chip 21 of microprocessor 2, this signal flip flop equipment comprise hall position sensor 81 and with the suitable signal receiver 82 of hall position sensor 81, hall position sensor 81 is installed on big arm of digger, hall position sensor 81 has upper magnetic steel and lower magnetic steel, and lower magnetic steel is arranged on the position apart from big arm of digger lower edge 3-8mm, upper magnetic steel is arranged on the position apart from big arm of digger upper edge 3-8mm, , by to upper, the data that the restriction of lower magnetic steel installation site makes data acquisition chip 21 gather this period are comparatively stable, thereby make the gravimetric value of the scraper bowl material that data analysis chip 22 calculates comparatively accurate, this signal receiver 82 is arranged in the driving cabin of excavator, hall position sensor 81 is connected with the input end of signal receiver 82, the input end control linkage of the output terminal of signal receiver 82 and microprocessor 2.

In the utility model, this microprocessor 2 is also circumscribed with the data-carrier store 9 for storage microprocessor 2 data, this data-carrier store 9 is connected with microprocessor 2 is two-way, this data-carrier store 9 comprises SDRAM storer 91 and FLASH storer 92, and SDRAM storer 91 and FLASH storer 92 are connected with microprocessor 2 is two-way respectively; By this data-carrier store 9, can make the operation of whole system comparatively smooth and easy.

In the utility model; the output terminal of this microprocessor 2 is also connected with the alarm unit 10 of weighing; like this; when accumulating weight reaches the gravimetric value of setting or non-normal working; microprocessor 2 will send alarm command to the alarm unit 10 of weighing; the alarm unit 10 of weighing sends chimes of doom, utilizes this alarm unit 10 of weighing to play a protective role to the scraper bowl of excavator.

A kind of power shovel dynamic weigher of the present utility model, while weighing, realize as follows:

One, when the scraper bowl with the excavator of scraper bowl material is promoted to the lower magnetic steel of excavator swing arm, hall position sensor is triggered, to microprocessor, send image data instruction, the data acquisition chip of microprocessor starts to gather the image data of Weight acquisition unit, when the scraper bowl with the excavator of scraper bowl material rises to the upper magnetic steel of excavator swing arm, hall position sensor is triggered again, to microprocessor, send the instruction that stops data collection, the data acquisition chip of microprocessor stops gathering the image data of Weight acquisition unit;

Two, data acquisition chip is sent to the data of step 1 in data analysis chip, and data analysis chip utilizes the mathematical model program self weaving to calculate scraper bowl weight of material value, the computing method of this data analysis chip as follows:

(1) on excavator, defining five coordinate systems, as shown in Figure 2, is respectively fixed reference frame (X, Y), and it is initial point that this fixed reference frame be take the geometric center of gravity of driving cabin, and directions X points to excavator car body direct of travel, and Y-direction is perpendicular to directions X; Driving cabin coordinate system (x, y), it is initial point that this driving cabin coordinate system be take the geometric center of gravity of driving cabin, and x direction is consistent with driving cabin direction, and y direction is perpendicular to x direction; Large arm coordinate system (s, t), it is initial point with the pin joint O point of large arm that this large arm coordinate system be take driving cabin, s coordinate points OR ₂direction, wherein O is the pin joint of driving cabin and large arm, R ₂for the pin joint of large arm with bucket thick stick, t direction is perpendicular to s direction; (u, v), this bucket thick stick coordinate system is that to take large arm be initial point with the pin joint of the thick stick that struggles against to bucket thick stick coordinate system, u coordinate points R ₂r ₃direction, wherein R ₂for the pin joint of large arm with bucket thick stick, R ₃for the pin joint of bucket thick stick and scraper bowl, v direction is perpendicular to u direction; Scraper bowl coordinate system (p, q); This scraper bowl coordinate system be the struggle against pin joint of thick stick and scraper bowl be initial point, q coordinate points R ₃i direction, wherein R ₃for the pin joint of bucket thick stick and scraper bowl, I is the pin joint of bar HI on scraper bowl, and bar HI is the hinged transition thick stick of bucket cylinder and scraper bowl, and p direction is perpendicular to q direction;

(2) three generalized coordinate: θ of definition ₁, θ ₂, θ ₃, θ wherein ₁for large arm and horizontal plane angle, θ ₂for the angle of large arm with bucket thick stick, θ ₃for the angle of scraper bowl with bucket thick stick, θ ₁by the obliquity sensor being arranged on big arm of digger, measure θ ₂by the obliquity sensor being arranged on excavator bucket thick stick, measure θ ₃by the obliquity sensor being arranged on power shovel, measure;

(3) set object of reference i, take driving cabin as object of reference 1, i=1, large arm is object of reference 2, i=2, bucket thick stick is object of reference 3, i=3, scraper bowl is object of reference 4, i=4;

(4) according to the kinetics equation of triumphant grace: under same generalized coordinate, the broad sense inertial force sum of the broad sense active force of object of reference and this object of reference is 0, can obtain following system of equations:

$\left\{\begin{array}{cc}\underset{i=1}{\overset{4}{\mathrm{\Σ}}}{F}_{i{\mathrm{\θ}}_1}+\underset{i=1}{\overset{4}{\mathrm{\Σ}}}{F}_{i{\mathrm{\θ}}_1}^{*}=0& \\ \underset{i=1}{\overset{4}{\mathrm{\Σ}}}{F}_{i{\mathrm{\θ}}_2}+\underset{i=1}{\overset{4}{\mathrm{\Σ}}}{F}_{i{\mathrm{\θ}}_2}^{*}=0& (i=\mathrm{1,2,3,4})\\ \underset{i=1}{\overset{4}{\mathrm{\Σ}}}{F}_{i{\mathrm{\θ}}_3}+\underset{i=1}{\overset{4}{\mathrm{\Σ}}}{F}_{i{\mathrm{\θ}}_3}^{*}=& \end{array}\right.$ ①

Wherein represent active force, represent inertial force;

(5) known according to the definition of triumphant grace: inertial force:

Moment of inertia: T _i ^*=-I _io ⁰α ⁱ- ⁰ω ⁱ* (I _io ⁰ω ⁱ); 3.

M wherein _ithe quality that represents each object of reference, the acceleration that represents each object of reference barycenter point, ⁰ω ⁱthe angular velocity that represents each relative ground of object of reference, ⁰α ⁱthe angular acceleration that represents each relative ground of object of reference, the angular acceleration of this each object of reference barycenter point and all can calculating by the gyroscope on each object of reference and the direct or indirect meter of obliquity sensor with respect to angular velocity and the angular acceleration on ground, the turning rate of driving cabin is more single simultaneously, only on surface level, there is steering angle, driving cabin with fix being connected of arm greatly, the angular velocity of driving cabin and angular acceleration can record by the gyroscope being arranged on large arm, I _ithe inertial tensor that represents each object of reference;

(6) according to formula, 2. 3. can obtain the broad sense inertial force of driving cabin with formula , the broad sense inertial force of large arm , the broad sense inertial force of bucket thick stick , the broad sense inertial force of scraper bowl ;

(7) calculate the broad sense active force of each object of reference:

A: for each generalized coordinate, the drift angle speed of driving cabin, linear speed is partially 0, and the broad sense active force of driving cabin is 0, ;

B: large arm is subject to the quality of large arm, the acting in conjunction of the driving force of the driving force of big arm cylinder and bucket thick stick oil cylinder, in generalized coordinate θ _i, i=1,2,3, the broad sense active force of large arm is: $\begin{array}{cc}{F}_{2{\mathrm{\θ}}_i}=W_2\·v_{G_2{\mathrm{\θ}}_i}^2{}_0+F_{2B}\·v_{B{\mathrm{\θ}}_i}^2{}_0+F_{2D}\·v_{{\mathrm{D\θ}}_i}^2{}_0& (i=\mathrm{1,2,3})\end{array};$

W wherein ₂for the quality of large arm, F _2Bfor big arm cylinder driving force, the pressure differential conversion calculations of two pressure transducers by big arm cylinder is tried to achieve, F _2Dfor bucket thick stick hydraulic oil cylinder driving power, the pressure differential conversion calculations of two pressure transducers by bucket thick stick oil cylinder is tried to achieve, be respectively generalized coordinate θ _iunder, some G ₂, the inclined to one side speed of B and D, G ₂point is the barycenter of large arm, and B point is large arm and the pin joint of big arm cylinder on large arm, and D point is bucket thick stick oil cylinder and the pin joint of large arm on large arm, with by kane dynamic equation, can calculate;

C, Dou Gang be subject to struggling against thick stick quality, the driving force of bucket thick stick oil cylinder, the driving force of bucket cylinder and along the acting in conjunction of the pulling force of the hinged transition thick stick of bucket cylinder and bucket thick stick, for generalized coordinate θ _i, i=1,2,3, the broad sense active force of bucket thick stick is:

$\begin{array}{cc}{F}_{3{\mathrm{\θ}}_i}=W_3\·v_{G_3{\mathrm{\θ}}_i}^3{}_0+F_{3E}\·v_{E{\mathrm{\θ}}_i}^3{}_0+F_{3F}\·\·v_{F{\mathrm{\θ}}_i}^3{}_0+F_{3G}\·v_{G{\mathrm{\θ}}_i}^3{}_0& (i=\mathrm{1,2,3})\end{array};$

W wherein ₃for the quality of bucket thick stick, F _3Efor bucket thick stick hydraulic oil cylinder driving power, its pressure differential conversion calculations by two pressure transducers of bucket thick stick oil cylinder is tried to achieve, F _3Ffor bucket cylinder driving force, its pressure differential conversion calculations by two pressure transducers of scraper bowl is tried to achieve, F _3Gfor along bucket cylinder and the hinged transition thick stick of bucket thick stick pulling force, it is by bucket thick stick, scraper bowl, how much force analysis of the bar mechanism that bucket cylinder, bar HG and bar HI form can be in the hope of, bar HG is the bucket cylinder transition thick stick hinged with bucket thick stick, with be respectively generalized coordinate θ _iunder, some G ₃, E, the inclined to one side speed of F and G, its mid point G ₃be the barycenter of scraper bowl, some E is bucket thick stick oil cylinder and the pin joint of bucket thick stick on bucket thick stick, and some F is bucket cylinder and the pin joint of bucket thick stick on bucket thick stick, and some G is the pin joint of bar HG on bucket thick stick, with by kane dynamic equation, can calculate;

D, scraper bowl are subject to the quality of scraper bowl and along the acting in conjunction of bar HI pulling force, for generalized coordinate θ _i, i=1,2,3, the broad sense active force of scraper bowl is:

$\begin{array}{cc}{F}_{4{\mathrm{\θ}}_i}=W_4\·v_{G_4{\mathrm{\θ}}_i}^4{}_0+F_{3I}\·v_{{\mathrm{I\θ}}_i}^4{}_0& (i=\mathrm{1,2,3})\end{array};$

W wherein ₄for the quality of scraper bowl, F _3Ifor the pulling force along bar HI, how much force analysis of the bar mechanism consisting of bucket thick stick, scraper bowl, bucket cylinder, bar HG and bar HI can be in the hope of, with be respectively generalized coordinate θ _iunder, some G ₄with the inclined to one side speed of I, G ₄for the barycenter of scraper bowl, some I is the pin joint of bar HI on scraper bowl, with by calculating by kane dynamic equation;

(8) by step (6) and step (7), be the broad sense inertial force of 0 value and broad sense active force substitution system of equations 1., can obtain system of equations newly:

(9) by 4.-5., 5.-6. can obtain:

$\left\{\begin{array}{c}{F}_{2{\mathrm{\θ}}_i}+(F_{3{\mathrm{\θ}}_i}-F_{3{\mathrm{\θ}}_2})+(F_{4{\mathrm{\θ}}_1}-F_{4{\mathrm{\θ}}_2})+(F_{3{\mathrm{\θ}}_1}^{*}-F_{3{\mathrm{\θ}}_2}^{*})+(F_{4{\mathrm{\θ}}_1}^{*}-F_{4{\mathrm{\θ}}_2}^{*})=0\\ F_{3{\mathrm{\θ}}_2}+(F_{4{\mathrm{\θ}}_2}-F_{4{\mathrm{\θ}}_3})+F_{3{\mathrm{\θ}}_2}^{*}+(F_{4{\mathrm{\θ}}_2}^{*}-F_{4{\mathrm{\θ}}_3}^{*})\end{array}\right.$ ⑦

(10) by step (6) and step (7), be the broad sense inertial force of non-zero value and broad sense active force substitution system of equations 7., can obtain:

$\left\{\begin{array}{c}{B}_1+D_1{p}_M+E_1{q}_M+\frac{F_1}{M_4}=0\\ B_2+D_2{p}_M+E_2{q}_M+\frac{F_2}{M_4}=0\end{array}\right.$ ⑧

B wherein ₁, B ₂, D ₁, D ₂, E ₁, E ₂, F ₁, F ₂for by triumphant grace kinematics analysis, utilize gyroscope and obliquity sensor on each object of reference directly or indirectly to measure, the single order time of resulting barycenter acceleration, speed, inclined to one side speed, angular velocity, drift angle speed, angular acceleration, three generalized coordinates of calculating leads, the second order time such as leads at the combination of dynamic data set, be known quantity, p _m, q _mand M ₄for remaining three unknown quantitys;

(11) eliminate unknown quantity q _m, 8. system of equations is converted into:

$H_i{p}_M+J_i\frac{1}{M_4}+K_i=0,i=\mathrm{1,2},\mathrm{Ln}$ ⑨

H _i=D ₂E ₁-D ₁E ₂，J _i=F ₂E ₁-F ₁E ₂，K _i=B ₂E ₁-B ₁E ₂；

Wherein subscript i represents the different data set of each instantaneous collection, H _i, J _i, K _iit is all the known quantity of the dynamic data set representations by step (10) Suo Shu;

(12) will 9. be expressed as the form of matrix, that is: Ax=b, wherein

$A=\left[\begin{array}{cc}{H}_1& J_1\\ H_2& J_2\\ M& M\\ H_n& J_n\end{array}\right],x=\left[\begin{array}{c}{p}_M\\ \frac{1}{M_4}\end{array}\right],b=\left[\begin{array}{c}-K_1\\ -K_2\\ M\\ -K_n\end{array}\right]$

Matrix A and vectorial b are known quantity, try to achieve the ideal value of x by least square method, finally obtain M ₄ideal value, this M ₄be the weight of scraper bowl material on the power shovel calculating under excavator dynamical state;

Three, the numerical value of step 2 calculating gained is sent to the display unit of weighing, and by weighing, display unit shows.

Compared with prior art; a kind of excavator bucket material dynamic weigher of the present utility model; when it measures on power shovel scraper bowl weight of material without excavator is shut down or fixing a certain angle; can in the transport process of excavator, to scraper bowl material, carry out weighing operation; greatly improved the digging efficiency of excavator, and it is simple and easy, easy to use to have operation, calculates accurately; the advantage that reliability is strong, is specially adapted to the excacation metering of the heavy constructions such as cubic metre of earth stone.

The foregoing is only preferred embodiment of the present utility model, all equalizations of doing with the utility model claim scope change and modify, and all should belong to the scope of the utility model claim.

Claims (6)

1. an excavator bucket material dynamic weigher, it is characterized in that: comprise Weight acquisition unit, microprocessor and the display unit of weighing, above-mentioned Weight acquisition unit comprises obliquity sensor, gyroscope and pressure transducer, above-mentioned pressure transducer is provided with six, six pressure transducers are the corresponding chamber, front and back that is arranged on the big arm cylinder of excavator respectively, on the chamber, front and back of bucket thick stick oil cylinder of excavator and the chamber, front and back of the bucket cylinder of excavator, above-mentioned obliquity sensor and above-mentioned gyroscope are installed in the large arm of excavator, on bucket thick stick and scraper bowl, above-mentioned microprocessor and the above-mentioned display unit of weighing are arranged on respectively in the driving cabin of excavator, above-mentioned microprocessor has for gathering data acquisition chip and the data analysis to data acquisition chip of Weight acquisition unit, the data analysis chip calculating, the output terminal of above-mentioned data acquisition chip is connected with the input end of above-mentioned data analysis chip, the output terminal of above-mentioned microprocessor is connected with the above-mentioned display unit of weighing, above-mentioned obliquity sensor, above-mentioned gyroscope and each above-mentioned pressure transducer all with input end be connected, the input end of above-mentioned microprocessor is connected with for triggering the data acquisition chip collection of above-mentioned microprocessor or the signal flip flop equipment stopping data collection, above-mentioned signal flip flop equipment comprise hall position sensor and with the suitable signal receiver of hall position sensor, above-mentioned hall position sensor is installed on big arm of digger, above-mentioned hall position sensor has upper magnetic steel and lower magnetic steel, and above-mentioned lower magnetic steel is arranged on the position apart from big arm of digger lower edge 3-8mm, above-mentioned upper magnetic steel is arranged on the position apart from big arm of digger upper edge 3-8mm, above-mentioned signal receiver is arranged in the driving cabin of excavator, above-mentioned hall position sensor is connected with the input end of above-mentioned signal receiver, the output terminal of above-mentioned signal receiver is connected with the input end of above-mentioned microprocessor.

2. a kind of excavator bucket material dynamic weigher according to claim 1, it is characterized in that: between above-mentioned Weight acquisition unit and above-mentioned microprocessor, be provided with signal condition module and A/D modular converter, the output terminal of above-mentioned obliquity sensor, gyroscope and pressure transducer is all connected with the input end of above-mentioned signal condition module, the output terminal of above-mentioned signal condition module is connected with the input end of above-mentioned A/D modular converter, and the output terminal of above-mentioned A/D modular converter is connected with above-mentioned data acquisition chip.

3. a kind of excavator bucket material dynamic weigher according to claim 1, it is characterized in that: it is the integrated circuit (IC) chip of STM32F103 that above-mentioned data acquisition chip adopts its model, it is the integrated circuit (IC) chip of TMS320F28335 that above-mentioned data analysis chip adopts its model, and above-mentioned data acquisition chip is connected with above-mentioned data analysis chip by CAN bus.

4. a kind of excavator bucket material dynamic weigher according to claim 1, is characterized in that: above-mentioned microprocessor is also provided with the data-carrier store for storage microprocessor data, and above-mentioned data-carrier store is connected with above-mentioned microprocessor is two-way.

5. a kind of excavator bucket material dynamic weigher according to claim 4, it is characterized in that: above-mentioned data-carrier store comprises SDRAM storer and FLASH storer, above-mentioned SDRAM storer and FLASH storer are connected with above-mentioned microprocessor is two-way respectively.

6. a kind of excavator bucket material dynamic weigher according to claim 1, is characterized in that: the output terminal of above-mentioned microprocessor is also connected with overweight alarm unit.