CN202853726U - Control system of tiltable weighing electronic scale - Google Patents

Control system of tiltable weighing electronic scale Download PDF

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Publication number
CN202853726U
CN202853726U CN 201220371613 CN201220371613U CN202853726U CN 202853726 U CN202853726 U CN 202853726U CN 201220371613 CN201220371613 CN 201220371613 CN 201220371613 U CN201220371613 U CN 201220371613U CN 202853726 U CN202853726 U CN 202853726U
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weighing
scale
angle
control system
tiltable
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张天袖
李先勇
陈月忠
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Zhongshan Camry Electronic Co Ltd
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Zhongshan Camry Electronic Co Ltd
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Abstract

The utility model discloses a control system of a tiltable weighing electronic scale. The control system comprises a scale which is provided with a display and a weighing surface. A weighing sensor used for measuring pressure and an angle detecting device used to detect gradient of the weighing surface of the scale are disposed in the scale. The scale is also provided with a weighing module processor used to calculate actual weigh of an object according to data measured by the angle detecting device and the weighing sensor. The display, the weighing sensor, and the angle detecting device are respectively connected with the weighing module processor. An objective of the utility model is to compensate a pressure induction value read by the weighing sensor on a basis that an included angle of the scale's weighing surface and a horizontal plane is equal to an included angle of pressure on the weighing surface and object gravity force, so that show values of a present electronic weighing instrument are close to actual object weights without measuring errors of the object actual weights because of inclination angles.

Description

A kind of control system of tiltable weighing electronic scale
[technical field]
The utility model relates to a kind of control system of tiltable weighing electronic scale.
[background technology]
At present on the market weighing apparatus product all must be placed on the smooth table top or keep just accurate weighing of horizontality, and this has limited the environment of weighing apparatus product use greatly.Again because the user is difficult to judge whether level of weighing apparatus product, so can cause the weighing of a lot of products to be affected.The method of adjusting in the market Product Level all is to adopt level meter mostly, although method is feasible, adjustment process is cumbersome, and when having changed a position, must must readjust, and for this reason, is necessary to overcome the above problems.
[utility model content]
The utility model has overcome the deficiency of above-mentioned technology, a kind of control system of tiltable weighing electronic scale is provided, detect the face of the weighing degree of tilt with respect to the horizontal plane of scale body by the inclination angle detection module, and the LOAD CELLS sense object imposes on the pressure of the face of weighing, controller compensates the pressure sensitive value according to the force analysis principle, make current electronic scale displayed value close to the actual object gravimetric value, and can not cause owing to the existence at pitch angle the measuring error to the object actual weight.
For achieving the above object, the utility model has adopted following technical proposal:
A kind of control system of tiltable weighing electronic scale, include scale body 1, described scale body 1 is provided with display 2 and the face 101 of weighing, be provided with the LOAD CELLS 3 that imposes on the face of weighing 101 pressure for the measurement object in the described scale body 1, be used for measuring the angle detection device 4 of face 101 degree of tilt of weighing, and the degree of tilt data that detect by angle detection device 4 first calculate the angle of the face of weighing 101 and 102 one-tenth at surface level, then the force analysis principle that equals the angle that LOAD CELLS 3 pressure directions become with the object gravity direction according to weigh face 101 and the angle of 102 one-tenth at surface level is come the pressure sensitive value of LOAD CELLS 3 is compensated the module processor 5 of weighing that calculates the object actual weight, described display 2, LOAD CELLS 3, angle detection device 4 is connected with the module processor 5 of weighing respectively.
As optimization, described angle detection device 4 adopts the 3-axis acceleration sensor for detection of the component value data of degree of tilt output acceleration of gravity on triaxial coordinate, and described 3-axis acceleration sensor output terminal is connected with the module processor 5 of weighing.
As optimization, it is the triaxial accelerometer acceleration transducer of LIS35DE that described angle detection device 4 adopts model.
As optimization, described angle detection device 4 adopts the obliquity sensor of also directly exporting the inclination angle Value Data for detection of degree of tilt.
The utility model can be used on the spoon scale, also can be used on measuring cup scale and the luggage scale.
Principle of work of the present utility model and process are as follows: scale is weighed on the object, and the LOAD CELLS inspected object imposes on weigh pressure on the face of scale body, and pressure sensitive value N is exported to the module processor of weighing;
Angle detection device is measured the weigh degree of tilt of face of scale body, and output degree of tilt data calculate inclination angle value α for the module processor of weighing;
According to force analysis, the angle α that the face of weighing of scale body becomes with surface level equal to weigh face pressure N and the angle that object gravity G becomes namely have
Figure BDA00001941503800021
The module processor of weighing calculates the object actual weight, and result of calculation is exported to display module shows.
The beneficial effects of the utility model are: 1, can be widely used in the weighing apparatus product, on spoon scale, use procedure does not just need the adjustment level, the weighing problem of avoiding the inclination because of the scale body to bring; 2, be applied on the electronic measuring cup weigher, the user can measure on the limit of falling the thing, limit, and is convenient easy-to-use.3, be applied on the commercial electronic-weighing system, the user no longer needs repeatedly to adjust by level meter the level of scale body.
[description of drawings]
Fig. 1 is synoptic diagram in kind of the present utility model.
Fig. 2 is structural representation of the present utility model.
Fig. 3 is the principle schematic that the utility model tilts to weigh.
Fig. 4 is the schematic diagram of the utility model embodiment 1.
Fig. 5 is the synoptic diagram that tetrahedron is asked angle.
Fig. 6 is the process flow diagram of weighing of the present utility model.
[embodiment]
Be described in further detail below in conjunction with accompanying drawing and embodiment of the present utility model:
Shown in Fig. 1-2, a kind of control system of tiltable weighing electronic scale, it is characterized in that including scale body 1, described scale body 1 is provided with display 2 and the face 101 of weighing, be provided with the LOAD CELLS 3 that imposes on the face of weighing 101 pressure for the measurement object in the described scale body 1, be used for measuring the angle detection device 4 of face 101 degree of tilt of weighing, and the degree of tilt data that detect by angle detection device 4 first calculate the angle of the face of weighing 101 and 102 one-tenth at surface level, then the force analysis principle that equals the angle that LOAD CELLS 3 pressure directions become with the object gravity direction according to weigh face 101 and the angle of 102 one-tenth at surface level is come the pressure sensitive value of LOAD CELLS 3 is compensated the module processor 5 of weighing that calculates the object actual weight, described display 2, LOAD CELLS 3, angle detection device 4 is connected with the module processor 5 of weighing respectively.
As shown in Figure 3, the degree of tilt of detection scale body 1 described in the utility model also refers to detect the degree of tilt of the face of weighing 101 on the scale body 1, the angle α of face 101 and 102 one-tenth at surface level namely weighs, according to force analysis, the face of weighing 101 of scale body equals LOAD CELLS 3 pressure N directions and the angle that object gravity G direction becomes with the inclination angle of 102 one-tenth at surface level, draws to tilt to weigh compensation relationship:
G = N COSα
Wherein G is weight of object, and N is the pressure sensitive value that LOAD CELLS 3 is read, and α also is designated as the inclination angle value, calculates the object actual weight according to above-mentioned formula, and therefore, how to calculate the inclination angle value just passable as long as solve output signal by angle detection device 4.
Embodiment 1, angle detection device 4 adopts 3-axis acceleration sensor, 3-axis acceleration sensor is the device of three directional accelerations of a kind of measurement, it can measure the accekeration of each axle, then change by voltage signal or digital signal and the inclination angle value of output, the below infers the relation that 3-axis acceleration value that 3-axis acceleration sensor is exported and inclination angle are worth.
As shown in Figure 4, the angle of establishing X-axis and surface level is angle of pitch Ax, and the angle of Y-axis and surface level is roll angle Ay.The below carries out the derivation of computing formula take angle of pitch Ax as example.When acceleration transducer lay in a horizontal plane on the surface level, its original state coordinate overlapped with X-axis, Y-axis, Z axis, and this moment, Ax was 0 degree, the static acceleration value on each axle: ADx=0g, ADy=0g, ADz=1g; When X-axis and surface level produced angle of pitch Ax, namely as shown in the figure angle P projected to the XZ axial plane with coordinate system, can try to achieve the static acceleration value on each axle: ADx=-1g * sin (Ax), ADy=0g, and ADz=1g * cos (Ax) draws the angle of pitch
Figure BDA00001941503800042
In like manner draw roll angle
Figure BDA00001941503800043
And ADx, ADy, ADz read by 3-axis acceleration sensor, and the module processor 5 of namely weighing can calculate by the output signal of connected 3-axis acceleration sensor the inclination angle of system on each coordinate axis.
As shown in Figure 5, ask angle to have according to tetrahedron
Figure BDA00001941503800044
Can draw bevel angle value α by the cosine of negating, because the practical application medium dip degree of tilt of weighing is limited, in the excessive situation of degree of tilt, can not weigh, describedly actually can be approximately α=Ax+Ay to bevel angle value α and make things convenient for system's computing.
Embodiment 2, it is the triaxial accelerometer acceleration transducer of LIS35DE that angle detection device 4 adopts model, the LIS35DE 3-axis acceleration sensor is a kind of high precision, low-power consumption and practical IC chip three axle acceleration sensors, inner integrated control chip output accekeration digital signal.As shown in Figure 4, LIS35DE three axle acceleration sensors are measured the dimensional orientation of object as benchmark with gravitational vector, carry out gradient measurement, when the inductive axis of accelerometer is vertical with gravity direction when being the inductive axis level, it is the most responsive to the variation of degree of tilt, this moment, inductive axis X was vertical with gravity direction with Y-axis, its digital quantity and degree of tilt in X and Y-axis output keeps linear, and when inductive axis and gravity direction when parallel, the acceleration output valve that the Z axis of LIS35DE three axle acceleration sensors is sensed approaches+1g or-1g.Will speed up all horizontal positioned of the X of meter and Y-axis, X-axis and Y-axis output this moment acceleration of gravity is 0, just can be used as bi-axial tilt instrumentation amount degree of tilt, is converted into corresponding g value variable quantity G with measuring output digit signals ADx, ADy X, G Y, have for LIS35DE:
G X=(AD X×1g/64)
G Y=(AD Y×1g/64)
Formula calculates pitch angle Ax and the Ay of X, Y-axis below the internal conversion relation of above-mentioned formula reaction LIS35DE output signal value and accekeration, substitution,
Ax=G X×90/1g≈1.4ADx
Ay=G Y×90/1g≈1.4ADy
Above-mentioned formula is the internal conversion relation at the acceleration that calculates of LIS35DE and pitch angle, wherein, tilt data ADx, ADy, ADz are directly exported by LIS35DE, and the pitch angle that calculates according to α=Ax+Ay and the proportional relation of LIS35DE output accekeration, provide more easily means for 4 pairs of pressure measuring values of other model angle detection devices carry out slope compensation, reference also is provided when using the 3-axis acceleration sensor of other models.
Embodiment 3, and angle detection device 4 directly adopts on the market existing finished product module obliquity sensor.Obliquity sensor is a kind of device of the horizontal survey for system, its micro-control unit, micro electro mechanical system accelerator, analog to digital conversion circuit, communication unit all are integrated on the very little circuit board, directly the output inclination angle is worth the tilt data such as α, angle detection device 4 all is integrated in the computation process of inclination angle value in the module, reduced the operand of the module processor 5 of weighing, the module processor 5 of weighing directly utilizes output signal and basis
Figure BDA00001941503800061
Just can calculate the object actual weight.
As shown in Figure 6, scale is weighed on the object, and LOAD CELLS 3 inspected object impose on weigh pressure on the face 101 of scale body, and pressure sensitive value N is exported to the module processor 5 of weighing; Angle detection device 4 is measured the weigh degree of tilt of face of scale bodies, and output degree of tilt data calculate inclination angle value α for the module processor 5 of weighing; The module processor 5 of weighing calculates the object actual weights, and result of calculation is exported to display 2 shows.
The utility model is measured the inclination angle and carries out the method for slope compensation a lot; the processing means that the tilt data that is detected by angle detection device 4 is calculated inclination angle value α have a variety of; those skilled in the art can be according to the output signal of concrete angle detection device 4 and the mathematical relation of inclination angle value α; select a kind of approximate conversion formula of being convenient to computing to be solidificated in advance in the module processor 5 of weighing; thereby calculate inclination angle value α; it does not affect the effect of basic structure of the present utility model and realization; as long as having adopted pick-up unit that the scale body is carried out tilt data detects; and compensation or the correction of the measuring error when carrying out inclination weighed of the measured value by these data relevant with inclination angle value α and LOAD CELLS 3; thereby calculating the mode of object actual weight, all is protection domain of the present utility model.
The utility model technology can be widely applied on the weighing apparatus product, particularly spoon scale.The operating position of spoon scale is: user's hand takes spoon scale to weigh, if the face of weighing of spoon scale is out-of-level, just can't guarantee that weighing is accurate, if adjust level by level meter, use and quite inconvenient, if used our this inclination weighing technology, just do not need to carry out horizontal adjustment, bring revolutionary leap for ease of use and the weighing accuracy of spoon scale.
Can also be used in addition on the measuring cup scale, the use habit of measuring cup scale is: the limit of falling the thing, limit is measured.Also be to be difficult to guarantee Product Level in the process of measuring, again the product pendulum measured again suitable trouble at table top if fallen thing.If use this inclination measurement technology, bring qualitative leap also can for the ease of use of measuring cup scale.
The technical solution of the utility model also can be applied on other weighing apparatus products such as luggage scale, has avoided because the weighing problem that the injustice of weighing table is brought, and use procedure does not just need repeatedly to adjust level.

Claims (7)

1. the control system of a tiltable weighing electronic scale, it is characterized in that including scale body (1), described scale body (1) is provided with display (2) and the face of weighing (101), be provided with the LOAD CELLS (3) that imposes on the face of weighing (101) pressure for the measurement object in the described scale body (1), be used for measuring the angle detection device (4) of face (101) degree of tilt of weighing, and the degree of tilt data that detect by angle detection device (4) first calculate the angle that the face of weighing (101) becomes with surface level (102), then the angle that face (101) becomes with surface level (102) according to weighing equals the force analysis principle of the angle that LOAD CELLS (3) pressure direction becomes with the object gravity direction to be come the pressure sensitive value of LOAD CELLS (3) is compensated the module processor (5) of weighing that calculates the object actual weight, described display (2), LOAD CELLS (3), angle detection device (4) is connected with the module processor (5) of weighing respectively.
2. the control system of a kind of tiltable weighing electronic scale according to claim 1, it is characterized in that described angle detection device (4) adopts the 3-axis acceleration sensor for detection of the component value data of degree of tilt output acceleration of gravity on triaxial coordinate, described 3-axis acceleration sensor output terminal is connected with the module processor (5) of weighing.
3. the control system of a kind of tiltable weighing electronic scale according to claim 1 and 2 is characterized in that it is the triaxial accelerometer acceleration transducer of LIS35DE that described angle detection device (4) adopts model.
4. the control system of a kind of tiltable weighing electronic scale according to claim 1 is characterized in that described angle detection device (4) adopts the obliquity sensor for detection of degree of tilt and direct output inclination angle Value Data.
5. the control system of a kind of tiltable weighing electronic scale according to claim 1 is characterized in that described scale body (1) is spoon scale.
6. the control system of a kind of tiltable weighing electronic scale according to claim 1 is characterized in that described scale body (1) is the measuring cup scale.
7. the control system of a kind of tiltable weighing electronic scale according to claim 1 is characterized in that described scale body (1) is luggage scale.
CN 201220371613 2012-07-27 2012-07-27 Control system of tiltable weighing electronic scale Expired - Fee Related CN202853726U (en)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102778287A (en) * 2012-07-27 2012-11-14 中山佳维电子有限公司 System and method for controlling tiltable weighing electronic scale
CN106638852A (en) * 2016-11-09 2017-05-10 中科院合肥技术创新工程院 Body weight management and analysis system and method applied to smart healthy toilet bowl
CN109238428A (en) * 2018-08-27 2019-01-18 Tcl移动通信科技（宁波）有限公司 A kind of weighing method based on intelligent terminal, storage medium and intelligent terminal
CN110346024A (en) * 2018-04-02 2019-10-18 浙江星星冷链集成股份有限公司 A kind of self-service cabinet weight induction system and its method automatically corrected
CN110646081A (en) * 2019-08-20 2020-01-03 深圳市安鑫宝科技发展有限公司 Electronic scale with anti-cheating function
CN110646080A (en) * 2019-08-20 2020-01-03 深圳市安鑫宝科技发展有限公司 Intelligent remote anti-cheating system for real-time data of electronic scale
CN110987134A (en) * 2019-11-21 2020-04-10 贵州电网有限责任公司 Gas cylinder weight detection device and detection method thereof
CN113588060A (en) * 2021-07-23 2021-11-02 芯海科技（深圳）股份有限公司 Weighing device and weighing data obtaining method
CN114485877A (en) * 2022-01-25 2022-05-13 常州纺织服装职业技术学院 Weighing system and method for weighing compensation by combining inertia measurement module

Cited By (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102778287A (en) * 2012-07-27 2012-11-14 中山佳维电子有限公司 System and method for controlling tiltable weighing electronic scale
CN102778287B (en) * 2012-07-27 2014-12-31 中山佳维电子有限公司 System and method for controlling tiltable weighing electronic scale
CN106638852A (en) * 2016-11-09 2017-05-10 中科院合肥技术创新工程院 Body weight management and analysis system and method applied to smart healthy toilet bowl
CN110346024A (en) * 2018-04-02 2019-10-18 浙江星星冷链集成股份有限公司 A kind of self-service cabinet weight induction system and its method automatically corrected
CN109238428A (en) * 2018-08-27 2019-01-18 Tcl移动通信科技（宁波）有限公司 A kind of weighing method based on intelligent terminal, storage medium and intelligent terminal
CN110646081A (en) * 2019-08-20 2020-01-03 深圳市安鑫宝科技发展有限公司 Electronic scale with anti-cheating function
CN110646080A (en) * 2019-08-20 2020-01-03 深圳市安鑫宝科技发展有限公司 Intelligent remote anti-cheating system for real-time data of electronic scale
CN110987134A (en) * 2019-11-21 2020-04-10 贵州电网有限责任公司 Gas cylinder weight detection device and detection method thereof
CN113588060A (en) * 2021-07-23 2021-11-02 芯海科技（深圳）股份有限公司 Weighing device and weighing data obtaining method
CN114485877A (en) * 2022-01-25 2022-05-13 常州纺织服装职业技术学院 Weighing system and method for weighing compensation by combining inertia measurement module
CN114485877B (en) * 2022-01-25 2023-09-05 常州纺织服装职业技术学院 Weighing system and method for weighing compensation by combining inertial measurement module

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