CN114858260B - Bar scale combined weighing method and system - Google Patents
Bar scale combined weighing method and system Download PDFInfo
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- CN114858260B CN114858260B CN202210373392.0A CN202210373392A CN114858260B CN 114858260 B CN114858260 B CN 114858260B CN 202210373392 A CN202210373392 A CN 202210373392A CN 114858260 B CN114858260 B CN 114858260B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G19/00—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups
- G01G19/40—Weighing apparatus or methods adapted for special purposes not provided for in the preceding groups with provisions for indicating, recording, or computing price or other quantities dependent on the weight
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/14—Measuring arrangements characterised by the use of optical techniques for measuring distance or clearance between spaced objects or spaced apertures
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/26—Measuring arrangements characterised by the use of optical techniques for measuring angles or tapers; for testing the alignment of axes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G21/00—Details of weighing apparatus
- G01G21/22—Weigh pans or other weighing receptacles; Weighing platforms
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- Measuring Fluid Pressure (AREA)
- Length Measuring Devices By Optical Means (AREA)
Abstract
The invention discloses a combined weighing method and a system for a bar scale, wherein the method comprises the following steps: the first bar-shaped scale and the second bar-shaped scale are aligned and placed on the ground; respectively adjusting the first bar scale and the second bar scale to be horizontal according to the level gauges of the first bar scale and the second bar scale; responding to the condition that the same goods to be weighed are placed on the first bar-shaped balance and the second bar-shaped balance together, respectively collecting the first pressure born by the first bar-shaped balance and the second pressure born by the second bar-shaped balance, and controlling the emitting port of the laser ranging sensor to emit laser; in response to the receiving panel receiving the laser, obtaining a first position of the receiving panel receiving the laser and a first distance between the first position and the emitting port; according to the first position and the first distance, a weighing inclined plane angle formed between the first bar-shaped scale and the second bar-shaped scale is obtained; and obtaining the real weight of the goods to be weighed according to the first pressure, the second pressure and the weighing inclined plane angle. The invention improves the precision of the combined weighing of the bar scales.
Description
Technical Field
The invention relates to the field of electronic weighing, in particular to a combined weighing method and system for a bar scale.
Background
Electronic scales have long manufacturing history in China, and the types of special scales in various industries are more, but for a long time, large-sized electronic scales are heavy (the weight of the electronic scales reaches several tons), and the electronic scales are inconvenient to transport, mount and move, so that the storage, storage and use spaces of users are large. Conventional electronic scales have requirements that cannot be adapted to large scales. Therefore, the strip-shaped balance has the advantages of small volume and light weight, and can meet the requirement of large weighing.
In the application process of the bar-shaped balance, when the large-size and heavy-weight goods are weighed, one bar-shaped balance is often insufficient to support the goods, and the goods easily slide down. At this time, two bar scales are needed to carry out combined weighing, and the two bar scales are respectively arranged at the bottom of two ends of the goods to support the goods, so that the goods are balanced in stress and are not easy to slide. In the weighing process, the level of the balance body is ensured to be the weight in accurate measurement. When one bar scale is used for weighing, even if the bar scale is placed on uneven ground, the scale body of the single bar scale can be leveled by a level meter. However, when two bar scales are used for combined weighing, the two scales may not be on the same horizontal plane due to uneven ground, so that the result of combined weighing becomes inaccurate.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, the present invention is to provide a method and a system for combined weighing of a bar-type balance, which aim to improve the combined weighing accuracy of the bar-type balance.
To achieve the above object, a first aspect of the present invention discloses a method for combined weighing by a bar scale, the method comprising:
the first bar-shaped scale and the second bar-shaped scale are aligned and placed on the ground; the device comprises a first bar-shaped scale, a second bar-shaped scale, a laser ranging sensor, a receiving panel and a control unit, wherein the transmitting port of the laser ranging sensor is arranged on one side of the first bar-shaped scale, the receiving panel of the laser ranging sensor is arranged on one side of the second bar-shaped scale, and one side of the transmitting port of the first bar-shaped scale is opposite to one side of the receiving panel of the second bar-shaped scale;
according to the level gauges of the first bar scale and the second bar scale, respectively adjusting the first bar scale and the second bar scale to be horizontal;
responding to the condition that the same goods to be weighed are placed on the first bar-shaped balance and the second bar-shaped balance together, respectively collecting the first pressure born by the first bar-shaped balance and the second pressure born by the second bar-shaped balance, and controlling the emitting port of the laser ranging sensor to emit laser;
in response to the receiving panel receiving the laser light, obtaining a first position of the receiving panel receiving the laser light and a first distance between the first position and the emitting port;
according to the first position and the first distance, a weighing inclined plane angle formed between the first bar-shaped scale and the second bar-shaped scale is obtained; the weighing inclined plane is a plane where the goods to be weighed are located;
and obtaining the real weight of the goods to be weighed according to the first pressure, the second pressure and the weighing inclined plane angle.
Optionally, the obtaining, according to the first position and the first distance, a weighing slope angle formed between the first bar scale and the second bar scale includes:
obtaining the vertical distance between the first position and the position of the transmitting port corresponding to the receiving panel;
according toObtaining the weighing inclined plane angle; wherein θ is the weighing inclined plane angle, h is the vertical distance, and L is the first distance.
Optionally, the obtaining the real weight of the to-be-weighed cargo according to the first pressure, the second pressure and the weighing slope angle includes:
according toObtaining the real weight of the goods to be weighed; wherein G is the true weight of the goods to be weighed, and N is 1 For the first pressure, the N 2 And for the second pressure, the θ is the weighing slope angle.
Optionally, the method further comprises:
and correcting the weighing indication number of the bar-shaped balance according to the real weight of the goods to be weighed, so that the bar-shaped balance displays the real weight.
Optionally, according to the level gauges of the first bar scale and the second bar scale, respectively adjusting the first bar scale and the second bar scale to be horizontal, including:
according to the deviation degree of the air bubbles in the level of the first bar-shaped scale and the second bar-shaped scale, the heights of the support legs of the first bar-shaped scale and the second bar-shaped scale are respectively adjusted so that the air bubbles in the level are positioned at the center; and when the air bubbles in the level are positioned at the central part, the first bar scale and the second bar scale are horizontally described.
A second aspect of the invention discloses a bar scale combined weighing system, the system comprising: the device comprises a first bar-shaped scale and a second bar-shaped scale, wherein a transmitting port of a laser ranging sensor is arranged on one side of the first bar-shaped scale, and a receiving panel of the laser ranging sensor is arranged on one side of the second bar-shaped scale;
the system further includes a controller, the controller including: the device comprises a placement module, a horizontal adjustment module, a pressure acquisition module, a laser control module, a position information acquisition module, an inclined plane angle acquisition module and a real weight acquisition module;
the placing module is used for aligning the first bar scale and the second bar scale to be placed on the ground; wherein, one side of the first bar scale, on which the emitting port is arranged, is opposite to one side of the second bar scale, on which the receiving panel is arranged;
the horizontal adjustment module is used for respectively adjusting the first bar scale and the second bar scale to be horizontal according to the level gauges of the first bar scale and the second bar scale;
the pressure acquisition module is used for respectively acquiring a first pressure born by the first bar-shaped scale and a second pressure born by the second bar-shaped scale in response to the fact that the same goods to be weighed are placed on the first bar-shaped scale and the second bar-shaped scale together;
the laser control module is used for responding to the goods to be weighed placed on the first bar-shaped scale and the second bar-shaped scale and controlling the emitting port of the laser ranging sensor to emit laser;
the position information obtaining module is used for obtaining a first position of the receiving panel for receiving the laser and a first distance between the first position and the emitting port in response to the receiving panel receiving the laser;
the inclined plane angle obtaining module is used for obtaining a weighing inclined plane angle formed between the first bar scale and the second bar scale according to the first position and the first distance; the weighing inclined plane is a plane where the goods to be weighed are located;
the real weight obtaining module is used for obtaining the real weight of the goods to be weighed according to the first pressure, the second pressure and the weighing inclined plane angle.
Optionally, the inclined plane angle obtaining module specifically includes: a vertical distance obtaining unit and an inclined plane angle calculating unit;
the vertical distance obtaining unit is used for obtaining the vertical distance between the first position and the position of the transmitting port corresponding to the receiving panel;
the inclined plane angle calculating unit is used for calculating the inclined plane angle according toObtaining the weighing inclined plane angle; wherein θ is the weighing inclined plane angle, h is the vertical distance, and L is the first distance.
Optionally, the real weight obtaining module is specifically configured to:
according toObtaining the real weight of the goods to be weighed; wherein G is the true weight of the goods to be weighed, and N is 1 For the first pressure, the N 2 And for the second pressure, the θ is the weighing slope angle.
Optionally, the system further comprises: a correction module;
the correction module is used for correcting the weighing indication of the bar-shaped balance according to the real weight of the goods to be weighed, so that the bar-shaped balance displays the real weight.
Optionally, the level adjustment module is specifically configured to:
according to the deviation degree of the air bubbles in the level of the first bar-shaped scale and the second bar-shaped scale, the heights of the support legs of the first bar-shaped scale and the second bar-shaped scale are respectively adjusted so that the air bubbles in the level are positioned at the center; and when the air bubbles in the level are positioned at the central part, the first bar scale and the second bar scale are horizontally described.
The invention has the beneficial effects that: 1. the method is characterized in that the first pressure born by the first bar-shaped scale and the second pressure born by the second bar-shaped scale are respectively collected in response to the fact that the same goods to be weighed are placed on the first bar-shaped scale and the second bar-shaped scale together, and the emitting port of the laser ranging sensor is controlled to emit laser; in response to the receiving panel receiving the laser, obtaining a first position of the receiving panel receiving the laser and a first distance between the first position and the emitting port; according to the first position and the first distance, a weighing inclined plane angle formed between the first bar-shaped scale and the second bar-shaped scale is obtained; and obtaining the real weight of the goods to be weighed according to the first pressure, the second pressure and the weighing inclined plane angle. According to the invention, the weighing inclined plane angle formed by the first bar-shaped balance and the second bar-shaped balance is measured through the laser distance sensor, so that the real weight of the goods to be weighed can be obtained according to the stress condition of the goods to be weighed. According to the invention, in the first mode, the weight measurement error caused by the fact that the first bar scale and the second bar scale are not on the same plane can be effectively reduced, and the measurement precision is increased; secondly, the first bar-shaped balance and the second bar-shaped balance are not required to be forcedly adjusted to the same plane, so that errors generated in the adjustment process are reduced, the adjustment time is shortened, and the weight measurement efficiency is improved. 2. According to the level gauges of the first bar scale and the second bar scale, the first bar scale and the second bar scale are respectively adjusted to be horizontal. The first bar-shaped balance and the second bar-shaped balance are firstly adjusted to be horizontal, so that errors of weighing results due to the fact that the first bar-shaped balance and the second bar-shaped balance are not horizontal are avoided. In summary, the invention obtains the weighing inclined plane angle between the two bar scales through the laser ranging sensor, and further obtains the real weight of the goods to be weighed, thereby improving the accuracy of the weighing result and avoiding the problem of low accuracy of the combined weighing result because the two bar scales are not on the same plane.
Drawings
FIG. 1 is a schematic flow chart of a combined weighing method for a bar balance according to a first embodiment of the present invention;
FIG. 2 is a schematic diagram of a controller of a combined weighing system of a bar scale according to a first embodiment of the present invention;
fig. 3 is a schematic diagram of load force analysis of a combined weighing of a bar scale according to a first embodiment of the present invention.
Detailed Description
The invention discloses a combined weighing method and a combined weighing system for a bar scale, and a person skilled in the art can refer to the content of the text and properly improve the technical details. It is expressly noted that all such similar substitutions and modifications will be apparent to those skilled in the art, and are deemed to be included in the present invention. While the methods and applications of this invention have been described in terms of preferred embodiments, it will be apparent to those skilled in the relevant art that variations and modifications can be made in the methods and applications described herein, and in the practice and application of the techniques of this invention, without departing from the spirit or scope of the invention.
The research of the applicant shows that: in the process of combined weighing of the bar scales, the two bar scales are not located on the same plane, so that compared with the bar scales which are completely horizontal, the bar scales are not horizontal and are affected by friction factors, and the combined weighing result is not accurate enough.
Accordingly, an embodiment of the present invention provides a method for combined weighing by a bar scale, as shown in fig. 1, the method includes:
step S101: the first bar scale and the second bar scale are aligned and placed on the ground.
Wherein, one side of first bar balance sets up laser rangefinder sensor's transmission mouth, one side of second bar balance sets up laser rangefinder sensor's receiving panel, and one side of first bar balance sets up the transmission mouth and one side of second bar balance sets up receiving panel is relative.
It should be noted that the first bar scale and the second bar scale are aligned so that the side surfaces are aligned, and the bottom surface and the top surface may be misaligned due to the misalignment of the placed bottom surfaces. One side of the first bar scale, which is provided with the transmitting port, is opposite to one side of the second bar scale, which is provided with the receiving panel, so as to ensure that the receiving panel can receive laser.
It should be noted that, in the embodiment of the present invention, the receiving panel may sense which position is irradiated by the laser.
Step S102: and respectively adjusting the first bar scale and the second bar scale to be horizontal according to the level gauges of the first bar scale and the second bar scale.
It should be noted that, the level gauge is a common gauge for measuring small angles. In the machine industry and in the manufacture of instruments, for measuring inclination angles with respect to horizontal, flatness and straightness of machine tool-like equipment rails, horizontal and vertical positions of equipment installations, etc. Mainly comprises a bubble type level meter and an electronic type level meter. By enabling the individual level of the bar scale, the accuracy of the weighing result is improved.
In a specific embodiment, according to the level of the first bar scale and the second bar scale, respectively, the first bar scale and the second bar scale are adjusted to be horizontal, including:
according to the deviation degree of the air bubbles in the level gauges of the first bar scale and the second bar scale, the heights of the support legs of the first bar scale and the second bar scale are respectively adjusted so that the air bubbles in the level gauges are positioned at the center; wherein, when the bubble is located the central part in the spirit level all, demonstrate first bar balance and second bar balance level.
In the embodiment, the bubble type level is adopted, and the bubble type level has simple structure, convenient use and easy installation. In this embodiment, the feet of the bar scale are adjustable, and the bar scale is generally horizontal by adjusting the feet of the bar scale.
Step S103: and responding to the same goods to be weighed and being placed on the first bar-shaped balance and the second bar-shaped balance together, respectively collecting the first pressure born by the first bar-shaped balance and the second pressure born by the second bar-shaped balance, and controlling the emitting port of the laser ranging sensor to emit laser.
Wherein, co-placement refers to a load being placed across the first and second bar scales.
The sum of the first pressure and the second pressure is the total pressure to which the first bar scale and the second bar scale are subjected. In fig. 3, 301 is a first bar-shaped scale, 302 is a second bar-shaped scale, 303 is a transmitting port, 304 is a receiving panel, 305 is a product to be weighed, G is the gravity force to which the product to be weighed 305 is subjected, N is the supporting force to which the product to be weighed 305 is subjected, N is the sum of the first pressure and the second pressure, f is the friction force to which the product to be weighed 305 is subjected, gsin θ and Gcos θ are component forces in different directions of gravity, and θ is the angle between the inclined plane and the horizontal plane, that is, the angle of the inclined plane of weighing.
Step S104: in response to the receiving panel receiving the laser light, a first position of the receiving panel receiving the laser light and a first distance between the first position and the emission port are obtained.
The receiving panel can sense the position of the receiving laser, so that a first position is obtained. The first distance is determined by the time that the laser light has passed from being emitted to being reflected back and the speed of light.
It should be noted that the difference between the planes of the first bar-shaped scale and the second bar-shaped scale is not very large, and the inclination is easily seen and then manually adjusted. The embodiment of the invention generally does not have the condition that the laser irradiates to the position outside the receiving panel.
Step S105: according to the first position and the first distance, a weighing inclined plane angle formed between the first bar-shaped scale and the second bar-shaped scale is obtained; the weighing inclined plane is a plane where goods to be weighed are located.
Optionally, according to the first position and the first distance, a weighing slope angle formed between the first bar scale and the second bar scale is obtained, including:
obtaining the vertical distance between the first position and the corresponding position of the transmitting port on the receiving panel;
according toObtaining a weighing inclined plane angle; wherein θ is the angle of the weighing inclined plane, h is the vertical distance, and L is the first distance.
As an example, if the emission port is centered on the side of the first bar, the vertical distance is the vertical distance from the first location to the center of the side of the second bar.
Step S106: and obtaining the real weight of the goods to be weighed according to the first pressure, the second pressure and the weighing inclined plane angle.
Optionally, obtaining the real weight of the cargo to be weighed according to the first pressure, the second pressure and the weighing slope angle includes:
according toObtaining the real weight of the goods to be weighed; wherein G is the real weight of the goods to be weighed, N 1 At a first pressure, N 2 And θ is the weighing slope angle for the second pressure.
It should be noted that the goods to be weighed are generally motionless when being weighed, and the stress balance is achieved, so that the true weight of the goods to be weighed can be obtained through the mode.
Optionally, the method further comprises:
and correcting the weighing indication number of the bar-shaped balance according to the real weight of the goods to be weighed, so that the bar-shaped balance displays the real weight.
In the embodiment of the invention, the same goods to be weighed are jointly placed on the first bar-shaped balance and the second bar-shaped balance, the first pressure born by the first bar-shaped balance and the second pressure born by the second bar-shaped balance are respectively collected, and the emitting port of the laser ranging sensor is controlled to emit laser; in response to the receiving panel receiving the laser, obtaining a first position of the receiving panel receiving the laser and a first distance between the first position and the emitting port; according to the first position and the first distance, a weighing inclined plane angle formed between the first bar-shaped scale and the second bar-shaped scale is obtained; and obtaining the real weight of the goods to be weighed according to the first pressure, the second pressure and the weighing inclined plane angle. According to the embodiment of the invention, the weighing inclined plane angle formed by the first bar-shaped balance and the second bar-shaped balance is measured through the laser distance sensor, so that the real weight of the goods to be weighed can be obtained according to the stress condition of the goods to be weighed. According to the embodiment of the invention, in the first mode, the weight measurement error caused by the fact that the first bar scale and the second bar scale are not on the same plane can be effectively reduced, and the measurement precision is increased; secondly, the first bar scale and the second bar scale are not required to be forcedly adjusted to the same plane, so that errors generated in the adjustment process are reduced, the adjustment time is shortened, and the weight measurement efficiency is improved. According to the embodiment of the invention, the first bar scale and the second bar scale are respectively adjusted to be horizontal according to the level gauges of the first bar scale and the second bar scale. According to the embodiment of the invention, the first bar scale and the second bar scale are firstly adjusted to be horizontal, so that errors of weighing results due to the fact that the first bar scale and the second bar scale are not horizontal are avoided. In summary, the embodiment of the invention obtains the weighing inclined plane angle between the two bar scales through the laser ranging sensor, and further obtains the real weight of the goods to be weighed, thereby improving the accuracy of the weighing result and avoiding the problem of low accuracy of the combined weighing result because the two bar scales are not on the same plane.
Based on the above-mentioned combined weighing method for the bar scale, the embodiment of the invention also provides a combined weighing system for the bar scale, which comprises: the device comprises a first bar-shaped scale and a second bar-shaped scale, wherein a transmitting port of a laser ranging sensor is arranged on one side of the first bar-shaped scale, and a receiving panel of the laser ranging sensor is arranged on one side of the second bar-shaped scale;
the system further includes a controller, which as shown in fig. 2 includes: a placement module 201, a level adjustment module 202, a pressure acquisition module 203, a laser control module 204, a position information acquisition module 205, an inclined plane angle acquisition module 206 and a real weight acquisition module 207;
a placement module 201 for placing the first bar scale and the second bar scale on the ground in alignment; wherein, one side of the first bar scale provided with the transmitting port is opposite to one side of the second bar scale provided with the receiving panel;
the level adjustment module 202 is configured to adjust the first bar scale and the second bar scale to be level according to the level gauges of the first bar scale and the second bar scale, respectively;
the pressure acquisition module 203 is configured to respectively acquire a first pressure born by the first bar-shaped scale and a second pressure born by the second bar-shaped scale in response to the same goods to be weighed being placed on the first bar-shaped scale and the second bar-shaped scale together;
the laser control module 204 is used for controlling the emitting port of the laser ranging sensor to emit laser in response to the goods to be weighed being placed on the first bar scale and the second bar scale;
a position information obtaining module 205, configured to obtain, in response to the receiving panel receiving the laser light, a first position where the receiving panel receives the laser light and a first distance between the first position and the emission port;
a slope angle obtaining module 206, configured to obtain a weighing slope angle formed between the first bar-shaped scale and the second bar-shaped scale according to the first position and the first distance; the weighing inclined plane is a plane where goods to be weighed are located;
the real weight obtaining module 207 is configured to obtain the real weight of the cargo to be weighed according to the first pressure, the second pressure and the weighing slope angle.
Optionally, the bevel angle obtaining module 206 specifically includes: a vertical distance obtaining unit and an inclined plane angle calculating unit;
the vertical distance obtaining unit is used for obtaining the vertical distance between the first position and the corresponding position of the transmitting port on the receiving panel;
a bevel angle calculating unit for calculating a bevel angle according toObtaining a weighing inclined plane angle; wherein θ is the angle of the weighing inclined plane, h is the vertical distance, and L is the first distance.
Optionally, the real weight obtaining module 207 is specifically configured to:
according toObtaining the real weight of the goods to be weighed; wherein G is the real weight of the goods to be weighed, N 1 At a first pressure, N 2 And θ is the weighing slope angle for the second pressure.
Optionally, the system further comprises: a correction module;
and the correction module is used for correcting the weighing indication of the bar-shaped scale according to the real weight of the goods to be weighed so as to enable the bar-shaped scale to display the real weight.
Optionally, the level adjustment module 202 is specifically configured to:
according to the deviation degree of the air bubbles in the level gauges of the first bar scale and the second bar scale, the heights of the support legs of the first bar scale and the second bar scale are respectively adjusted so that the air bubbles in the level gauges are positioned at the center; wherein, when the bubble is located the central part in the spirit level all, demonstrate first bar balance and second bar balance level.
The pressure acquisition module 203 and the laser control module 204 respectively acquire the first pressure born by the first bar-shaped scale and the second pressure born by the second bar-shaped scale in response to the same goods to be weighed being placed on the first bar-shaped scale and the second bar-shaped scale together, and control the emitting port of the laser ranging sensor to emit laser; the position information obtaining module 205 obtains a first position of the receiving panel for receiving the laser light and a first distance between the first position and the emission port in response to the receiving panel receiving the laser light; the slope angle obtaining module 206 obtains a weighing slope angle formed between the first bar scale and the second bar scale according to the first position and the first distance; the real weight obtaining module 207 obtains the real weight of the cargo to be weighed according to the first pressure, the second pressure, and the weighing slope angle. According to the embodiment of the invention, the weighing inclined plane angle formed by the first bar-shaped balance and the second bar-shaped balance is measured through the laser distance sensor, so that the real weight of the goods to be weighed can be obtained according to the stress condition of the goods to be weighed. The embodiment of the invention can effectively reduce the weight measurement error caused by the fact that the first bar scale and the second bar scale are not on the same plane through the system, and increase the measurement precision; secondly, the first bar scale and the second bar scale are not required to be forcedly adjusted to the same plane, so that errors generated in the adjustment process are reduced, the adjustment time is shortened, and the weight measurement efficiency is improved. According to the embodiment of the invention, the first bar scale and the second bar scale are respectively adjusted to be horizontal according to the level gauges of the first bar scale and the second bar scale. The level adjustment module 202 of the embodiment of the invention adjusts the first bar-shaped scale and the second bar-shaped scale to the level first, so that the error of the weighing result caused by the non-level of the first bar-shaped scale and the second bar-shaped scale is avoided. In summary, the embodiment of the invention obtains the weighing inclined plane angle between the two bar scales through the laser ranging sensor, and further obtains the real weight of the goods to be weighed, thereby improving the accuracy of the weighing result and avoiding the problem of low accuracy of the combined weighing result because the two bar scales are not on the same plane.
It is noted that relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Moreover, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising one … …" does not exclude the presence of other like elements in a process, method, article, or apparatus that comprises an element.
In this specification, each embodiment is described in a related manner, and identical and similar parts of each embodiment are all referred to each other, and each embodiment mainly describes differences from other embodiments. In particular, for system embodiments, since they are substantially similar to method embodiments, the description is relatively simple, as relevant to see a section of the description of method embodiments.
The foregoing is merely illustrative of the preferred embodiments of the present invention, and is not intended to limit the scope of the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention are included in the protection scope of the present invention.
Claims (10)
1. A method of bar scale combination weighing, the method comprising:
the first bar-shaped scale and the second bar-shaped scale are aligned and placed on the ground; the device comprises a first bar-shaped scale, a second bar-shaped scale, a laser ranging sensor, a receiving panel and a control unit, wherein the transmitting port of the laser ranging sensor is arranged on one side of the first bar-shaped scale, the receiving panel of the laser ranging sensor is arranged on one side of the second bar-shaped scale, and one side of the transmitting port of the first bar-shaped scale is opposite to one side of the receiving panel of the second bar-shaped scale;
according to the level gauges of the first bar scale and the second bar scale, respectively adjusting the first bar scale and the second bar scale to be horizontal;
responding to the condition that the same goods to be weighed are placed on the first bar-shaped balance and the second bar-shaped balance together, respectively collecting the first pressure born by the first bar-shaped balance and the second pressure born by the second bar-shaped balance, and controlling the emitting port of the laser ranging sensor to emit laser;
in response to the receiving panel receiving the laser light, obtaining a first position of the receiving panel receiving the laser light and a first distance between the first position and the emitting port;
according to the first position and the first distance, a weighing inclined plane angle formed between the first bar-shaped scale and the second bar-shaped scale is obtained; the weighing inclined plane is a plane where the goods to be weighed are located;
and obtaining the real weight of the goods to be weighed according to the first pressure, the second pressure and the weighing inclined plane angle.
2. The method of claim 1, wherein the obtaining a weighing ramp angle formed between the first and second bar scales based on the first location and the first distance comprises:
obtaining the vertical distance between the first position and the position of the transmitting port corresponding to the receiving panel;
according toObtaining the weighing inclined plane angle; wherein θ is the weighing inclined plane angle, h is the vertical distance, and L is the first distance.
3. The method according to claim 1, wherein the obtaining the true weight of the load to be weighed according to the first pressure, the second pressure, and the weighing slope angle comprises:
according toObtaining the real weight of the goods to be weighed; wherein G is the true weight of the goods to be weighed, and N is 1 For the first pressure, the N 2 And for the second pressure, the θ is the weighing slope angle.
4. The bar scale combined weighing method of claim 1, further comprising:
and correcting the weighing indication number of the bar-shaped balance according to the real weight of the goods to be weighed, so that the bar-shaped balance displays the real weight.
5. The bar scale combined weighing method of claim 1, wherein adjusting the first bar scale and the second bar scale to level according to the level of the first bar scale and the second bar scale, respectively, comprises:
according to the deviation degree of the air bubbles in the level of the first bar-shaped scale and the second bar-shaped scale, the heights of the support legs of the first bar-shaped scale and the second bar-shaped scale are respectively adjusted so that the air bubbles in the level are positioned at the center; and when the air bubbles in the level are positioned at the central part, the first bar scale and the second bar scale are horizontally described.
6. A bar scale combination weighing system, the system comprising: the device comprises a first bar-shaped scale and a second bar-shaped scale, wherein a transmitting port of a laser ranging sensor is arranged on one side of the first bar-shaped scale, and a receiving panel of the laser ranging sensor is arranged on one side of the second bar-shaped scale;
the system further includes a controller, the controller including: the device comprises a placement module, a horizontal adjustment module, a pressure acquisition module, a laser control module, a position information acquisition module, an inclined plane angle acquisition module and a real weight acquisition module;
the placing module is used for aligning the first bar scale and the second bar scale to be placed on the ground; wherein, one side of the first bar scale, on which the emitting port is arranged, is opposite to one side of the second bar scale, on which the receiving panel is arranged;
the horizontal adjustment module is used for respectively adjusting the first bar scale and the second bar scale to be horizontal according to the level gauges of the first bar scale and the second bar scale;
the pressure acquisition module is used for respectively acquiring a first pressure born by the first bar-shaped scale and a second pressure born by the second bar-shaped scale in response to the fact that the same goods to be weighed are placed on the first bar-shaped scale and the second bar-shaped scale together;
the laser control module is used for responding to the goods to be weighed placed on the first bar-shaped scale and the second bar-shaped scale and controlling the emitting port of the laser ranging sensor to emit laser;
the position information obtaining module is used for obtaining a first position of the receiving panel for receiving the laser and a first distance between the first position and the emitting port in response to the receiving panel receiving the laser;
the inclined plane angle obtaining module is used for obtaining a weighing inclined plane angle formed between the first bar scale and the second bar scale according to the first position and the first distance; the weighing inclined plane is a plane where the goods to be weighed are located;
the real weight obtaining module is used for obtaining the real weight of the goods to be weighed according to the first pressure, the second pressure and the weighing inclined plane angle.
7. The bar scale integrated weighing system of claim 6, wherein said incline angle acquisition module specifically comprises: a vertical distance obtaining unit and an inclined plane angle calculating unit;
the vertical distance obtaining unit is used for obtaining the vertical distance between the first position and the position of the transmitting port corresponding to the receiving panel;
the inclined plane angle calculating unit is used for calculating the inclined plane angle according toObtaining the weighing inclined plane angle; wherein θ is the weighing inclined plane angle, h is the vertical distance, and L is the first distance.
8. The bar scale integrated weighing system of claim 6, wherein said real weight acquisition module is specifically configured to:
according toObtaining the real weight of the goods to be weighed; wherein G is the true weight of the goods to be weighed, and N is 1 For the first pressure, the N 2 And for the second pressure, the θ is the weighing slope angle.
9. The bar scale integrated weighing system of claim 6, wherein said system further comprises: a correction module;
the correction module is used for correcting the weighing indication of the bar-shaped balance according to the real weight of the goods to be weighed, so that the bar-shaped balance displays the real weight.
10. The bar scale integrated weighing system of claim 6, wherein said level adjustment module is specifically configured to:
according to the deviation degree of the air bubbles in the level of the first bar-shaped scale and the second bar-shaped scale, the heights of the support legs of the first bar-shaped scale and the second bar-shaped scale are respectively adjusted so that the air bubbles in the level are positioned at the center; and when the air bubbles in the level are positioned at the central part, the first bar scale and the second bar scale are horizontally described.
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