CN117451158B - Impact type grain yield sensor test calibration device and test calibration method - Google Patents
Impact type grain yield sensor test calibration device and test calibration method Download PDFInfo
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- 238000012360 testing method Methods 0.000 title claims abstract description 184
- 238000000034 method Methods 0.000 title claims abstract description 42
- 238000003860 storage Methods 0.000 claims abstract description 126
- 238000005303 weighing Methods 0.000 claims abstract description 49
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- 230000008569 process Effects 0.000 claims abstract description 15
- 238000005259 measurement Methods 0.000 claims description 45
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- 238000010586 diagram Methods 0.000 description 8
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01G—WEIGHING
- G01G23/00—Auxiliary devices for weighing apparatus
- G01G23/01—Testing or calibrating of weighing apparatus
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Abstract
The application relates to the technical field of object weighing, in particular to an impulse type grain yield sensor test calibration device and a test calibration method; the test calibration device comprises an upper grain tank, a lower grain tank, an elevator, a transmission structure, a grain storage tank, a position adjusting structure, a weighing structure and a vibration structure; the upper grain tank is positioned above the lower grain tank; the elevator comprises a lower port and an upper port, wherein the lower port is communicated with the lower grain tank, and the upper port is communicated with the upper grain tank; the grain storage tank is positioned between the upper grain tank and the lower grain tank along the vertical direction; the grain storage box comprises a grain inlet, a grain outlet and an inner cavity; the transmission structure is used for transmitting the grains in the upper grain tank to a grain inlet of the grain storage tank; the sensor to be measured is arranged at a grain inlet of the grain storage box; the test calibration device and the test calibration method can simulate the vibration environment, can solve the problems of poor accuracy, complicated process, low automation degree and the like of the conventional test calibration device, and have the characteristics of simplicity in operation, good universality, convenience in use and the like.
Description
Technical Field
The application relates to the technical field of object weighing, in particular to an impulse type grain yield sensor test calibration device and a test calibration method.
Background
"Fine agriculture" is a modern agricultural management and operation concept developed from the eighties of the twentieth century, and is a development direction of agriculture today. The main content of fine agriculture is to combine modern technology with agricultural production management so as to achieve the purposes of saving cost investment, increasing crop yield, improving the utilization rate of agricultural resources and the like.
The collection of farmland crop yield information is the first step in implementing fine agriculture. The crop yield reflects the influence of the conditions of farmland topography structure, soil characteristics, fertilizer application, irrigation, meteorological factors, diseases, weeds and the like on the yield in a concentrated manner, and is one of key information to be acquired in fine agriculture; the yield map is an effective method for describing the yield difference change of farmland crops, and different farmland management areas can be divided to guide accurate operation by combining the yield map and soil characteristic analysis. The grain yield distribution information can be obtained in real time by a yield sensor mounted on the combine harvester, and the impact grain yield sensor has significant advantages in terms of performance and economy.
The impact grain yield sensor is arranged at the top of the grain cleaning elevator of the combine harvester, grains thrown by the elevator strike on grain striking plates of the sensor to cause transverse deformation of the cantilever beam elastic element, and the deformation is converted into electric quantity by the resistance strain gauge group to sense the impact force. When the mass flow of the grains is different, the impact force is different, and when the mass flow is large, the impact force is large, otherwise, the impact force is small, so that the mass flow of the grains can be converted from the impact force signal, and the grain yield value can be obtained through calculation.
In the research and development stage of the impulse grain yield sensor, the sensor is required to be tested and tested continuously, and the structural design, the circuit design, the vibration resistance design and the anti-interference design of the sensor are adjusted continuously so that the sensor meets the field use requirement, the actual harvesting field is limited by regions and short harvesting time, and a large number of tests are difficult to be carried out on the harvesting field in the research and development stage of the sensor, so that a set of test device capable of simulating the grain harvesting field environment to the greatest extent has very important significance for successful research and development of the sensor; in addition, before the sensor leaves the factory, the sensor also has to be tested and calibrated to ensure that each performance of the sensor meets the field use requirement.
However, the current test calibration devices applied to impulse grain yield sensors are relatively few and have significant shortcomings, which are mainly manifested in the following aspects:
first: the existing test calibration device has no function of simulating the on-site vibration environment, cannot simulate the real working condition of the sensor working on the combine harvester, and cannot realize comprehensive test on the sensor;
second,: the existing test calibration device has the defects that the distance between the mounting position of a sensor and the outlet of grains, the relative position, the inclination angle and the grain impact range are fixed and cannot be flexibly adjusted, so that the test calibration device is only suitable for sensors matched with one or more types of harvesters, and the test calibration device has poor universality;
thirdly, some test calibration devices are required to be manually carried out on grain loading, so that long-time continuous test of the sensor cannot be realized, and the sensor cannot be sufficiently tested and calibrated; some test calibration devices can realize automatic loading of grains, but have no temporary storage function of grains after hitting the sensor, so that the grains can not be weighed after being accumulated after hitting the sensor in a period of time, and further, the accuracy of the measured data of the sensor in the same period of time can not be effectively compared.
Disclosure of Invention
The impulse type grain yield sensor test calibration device and the test calibration method can simulate the vibration environment of a harvesting site, are suitable for testing and calibrating the grain yield sensors installed on various harvester types, and can be used for continuous test.
The technical scheme of the invention is as follows:
in a first aspect, the present application provides a test calibration device for an impulse grain yield sensor, comprising an upper grain tank, a lower grain tank, an elevator, a transmission structure, a grain storage tank, a position adjustment structure, a weighing structure and a vibration structure;
the upper grain tank is positioned above the lower grain tank;
the elevator comprises a lower port and an upper port, wherein the lower port is communicated with the lower grain tank, and the upper port is communicated with the upper grain tank;
the grain storage box is positioned between the upper grain box and the lower grain box along the vertical direction; the grain storage box comprises a grain inlet, a grain outlet and an inner cavity;
the transmission structure is used for transmitting the grains in the upper grain tank to a grain inlet of the grain storage tank;
the grain inlet of the grain storage box is provided with the sensor to be tested;
the position adjusting structure is arranged in the inner cavity and is used for adjusting the spatial position of the sensor to be measured in the inner cavity;
The grain outlet of the grain storage tank comprises an opening state and a closing state, and grains in the grain storage tank flow into the lower grain tank through the grain outlet in the opening state; in the closed state, the grains are stored in the grain storage box;
the weighing structure is used for weighing grains in the lower grain tank;
the vibration structure is connected with the grain storage tank and is used for providing vibration for the grain storage tank.
In one design manner, the position adjusting structure comprises a first sliding rail, a second sliding rail, a third sliding rail and a sensor mounting rack to be measured, wherein the first sliding rail is fixedly arranged along the vertical direction, the second sliding rail and the third sliding rail are arranged along the horizontal direction, and the sliding directions of the first sliding rail, the second sliding rail and the third sliding rail are orthogonal; the second sliding rail is in sliding connection with the first sliding rail, the third sliding rail is in sliding connection with the second sliding rail, and the third sliding rail is in sliding connection with the to-be-detected sensor mounting frame.
In one design, the transmission structure comprises a conveying motor, a frequency converter, a conveying pipe and a conveying auger; the conveying auger is arranged in the conveying pipe; the frequency converter is used for controlling the rotation parameters of the conveying motor; the conveying motor is used for providing power for the conveying auger;
The conveying pipe is positioned between the upper grain tank and the grain storage tank along the vertical direction;
the upper grain tank and the grain storage tank are positioned at different positions of the conveying pipe along the horizontal direction;
the bottom of the upper grain tank is provided with an upper grain tank interface; the pipe wall of the conveying pipe is provided with a conveying pipe interface which is in butt joint with the upper grain box interface, and the upper grain box is communicated with the conveying pipe through the upper grain box interface and the conveying pipe interface;
the conveying pipe corresponds to the grain storage box, and a conveying pipe outlet for conveying grains to the grain storage box is formed in the conveying pipe.
In one design, the conveying structure further comprises a conveying pipe joint, wherein the conveying pipe joint comprises an inlet end and a first outlet end; the inlet end is communicated with the first outlet end, and the axis of the inlet end is intersected with the axis of the first outlet end; the inlet end is also provided with an inlet end flange; the first outlet end faces the sensor to be measured;
the conveying pipe joint is detachably connected with the conveying pipe at the outlet of the conveying pipe through the inlet end flange;
the delivery auger extends from the delivery tube at least to the first outlet end of the delivery tube coupling.
In one design mode, the number of the conveying pipe joints is a plurality of, and the shapes of the first outlet ends of different conveying pipe joints are different; one of the plurality of delivery tube connectors is removably coupled to the delivery tube.
In one design, the grain feeding box is also provided with a stirring structure.
In one design, the grain inlet is arranged at the top of the grain storage box; the grain outlet is arranged at the side part of the grain storage box;
the upward side of the bottom of the grain storage box is an inclined plane; the grain storage box is characterized in that one side of the grain storage box, provided with the grain outlet, is also provided with a bottom extension section, one upward surface of the bottom extension section is also an inclined surface, and the bottom extension section is connected with the bottom of the grain storage box;
the bottom of the grain storage tank and the inclined direction of the inclined plane of the bottom extension section face the lower grain storage tank, and one end of the bottom extension section, which is far away from the bottom of the grain storage tank, is positioned above the grain inlet of the lower grain storage tank.
In one design, the grain storage box comprises a first box wall, a second box wall and a box door;
the first tank wall and the second tank wall are oppositely arranged and are positioned above the bottom of the grain storage tank;
the box door is arranged between the first box wall and the second box wall;
The box door comprises an upper box door and a lower box door, and the upper box door is fixedly connected with the upper parts of the first box wall and the second box wall; a space is formed between the lower part of the upper box door and the bottom of the grain storage box, and the grain outlet is formed at the space;
the lower box door is positioned on one side of the upper box door and is used for moving upwards or downwards relative to the upper box door along the vertical direction so as to realize the opening and closing of the grain outlet.
In one design, the test calibration device further comprises a controller and a measurement and control host;
the measurement and control host is used for sending instruction information to the controller, and controlling the operation of the elevator, the operation of the stirring structure, the operation of the position adjusting structure, the operation of the transmission structure, the opening and closing of the grain outlet and the vibration of the vibration structure through the controller; the controller is controlled to collect measurement data of the weighing structure and the sensor to be measured, the measurement data of the weighing structure is compared with the measurement data of the sensor to be measured to obtain calibration data, and the calibration data is written into the sensor to be measured; but also for the querying of historical data.
In a second aspect, the present application further provides a method for performing test calibration by using the impact type grain yield sensor test calibration device, including the following steps:
Setting test parameters;
adding a proper amount of grains into the grain discharging box;
controlling the stirring structure to act;
opening a grain outlet of the grain storage tank, and emptying grains in the grain storage tank;
closing a grain outlet of the grain storage tank;
controlling the position adjusting structure to enable the sensor to be detected to be at a preset position;
controlling the vibration structure to generate a vibration signal;
controlling the elevator to lift grains in the lower grain tank into the upper grain tank; when the grains loaded in the grain feeding box reach the preset quantity, controlling the elevator to stop working; the grains reaching the preset quantity at least can meet the one-time measurement requirement of the sensor to be measured;
collecting the weight value of grains in a lower grain tank output by a weighing structure, and recording and storing the weight value;
controlling the transmission structure to push grains in the upper grain tank to a first outlet end of the delivery pipe joint;
collecting and storing grain flow data output by a sensor to be detected;
according to grain flow data output by the sensor to be detected, calculating the weight of grains accumulated in the time of the preset collection times, and recording;
emptying grains in the grain storage tank into the lower grain tank;
collecting the weight value of grains in the lower grain tank output by the weighing structure, and recording and storing the weight value;
The difference value of the output weight of the weighing structure is measured twice before and after the test is calculated, the actual weight of the grains accumulated in the time of the collection times is calculated, meanwhile, the difference value of the actual weight of the grains and the weight of the grains measured by the sensor to be measured is calculated, and the difference value data of the actual weight of the grains and the weight of the grains measured by the sensor to be measured is recorded and stored, wherein the difference value data is calibration data.
On the other hand, the application also provides another method for performing test calibration by using the impact type grain yield sensor test calibration device, which comprises the following steps:
setting test parameters;
adding a proper amount of grains into the grain discharging box;
controlling the stirring structure to act;
opening a grain outlet of the grain storage tank, and emptying grains in the grain storage tank;
controlling the position adjusting structure to enable the sensor to be detected to be at a preset position;
controlling the vibration structure to generate a vibration signal;
controlling the elevator to lift grains in the lower grain tank into the upper grain tank; when the grains loaded in the upper grain tank reach the preset quantity, controlling the transmission structure to push the grains in the upper grain tank to the first outlet end of the outlet conveying pipe joint; the grains reaching the preset quantity at least can meet the one-time measurement requirement of the sensor to be measured;
In the process, continuously collecting the weight value of grains in the lower grain tank output by the weighing structure, and recording and storing the weight value; synchronously and continuously collecting and storing grain flow data output by a sensor to be detected;
and analyzing the grain weight value and grain flow data output by the sensor to be tested through the symmetrical weight structure to generate test data and calibration data.
Compared with the prior art, the test calibration device provided by the application has the following beneficial effects:
first: the test calibration device is provided with the vibration structure, and the vibration structure can generate vibration with different directions, different amplitudes and different frequencies so as to simulate the vibration environment of the sensor to be tested applied on site, and further enable the output sensor to be tested to test and calibrate in a working environment close to reality as much as possible, so that the calibration accuracy can be improved; when the calibrated yield sensor to be measured is used for a harvester, the yield of grains can be measured more accurately, and the realization of refined agriculture is facilitated.
Second,: the experimental calibration device of this application is in the during operation, the lift conveyer can be with cereal continuous from lower grain tank transmission to the upper grain tank in, afterwards, the transmission structure is with the cereal transmission in the upper grain tank to the grain inlet of depositing the grain tank, treat that the sensor produces certain impact force, afterwards, cereal in the grain tank can flow in the lower grain tank through the grain outlet, so, cereal can be continuous in lower grain tank, go up grain tank and grain tank continuous circulation, and then can realize the long-time, continuous multiple test of sensor that awaits measuring, help improving the experimental calibration efficiency of sensor that awaits measuring.
Third,: when the test calibration device works, the grain outlet of the grain storage tank comprises an opening state and a closing state, and grains in the grain storage tank flow into the lower grain tank through the grain outlet in the opening state; in the closed state, the grains are stored in the grain storage tank; thus, in the test or calibration process, the grain outlet can be opened for continuous multiple tests; the grain outlet can be closed at any time according to the requirements to stop the test, and the data in the test can be analyzed; then, the grain outlet can be opened again to continue the test or calibration; therefore, the tester can select to test continuously for multiple times, or pause the test, or continue the test according to the specific conditions of the test; to a certain extent, the test and calibration effects and efficiency can be improved.
Fourth,: the test calibration device of the application further comprises a position adjusting structure, the spatial position of the sensor to be tested can be adjusted through the position adjusting structure, so that the test calibration device is suitable for tests and calibration of various harvester type yield sensors, and the accuracy of the tests and calibration is improved.
Fifth,: the test calibration device has a compact and reasonable overall structure, and has a very good use effect compared with the existing calibration device.
Additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention.
Drawings
FIG. 1 is a schematic diagram showing a structure of an impulse grain yield sensor test calibration device according to an embodiment of the present invention;
FIG. 2 is a schematic view of a grain bin of a calibration device for impulse grain yield sensor test according to an embodiment of the present invention;
FIG. 3 is a schematic view showing a position adjusting structure of a calibration device for an impulse type grain yield sensor according to an embodiment of the present invention;
FIG. 4 is a schematic diagram showing a combined structure of a grain tank and a transmission structure on a calibration device for an impulse grain yield sensor test according to an embodiment of the present invention;
FIG. 5 is a schematic diagram showing the structure of a pipe joint for conveying in a calibration device for impulse grain yield sensor test according to an embodiment of the present invention;
FIG. 6 is a schematic diagram showing a transmission structure of a calibration device for an impulse grain yield sensor according to an embodiment of the present invention;
FIG. 7 is a block diagram showing the operation of the control section of the impact grain yield sensor test calibration apparatus according to the embodiment of the present application;
FIG. 8 is a flow chart of a first test calibration method for an impulse grain yield sensor test calibration device according to an embodiment of the present application;
FIG. 9 is a flow chart of a second test calibration method for an impulse grain yield sensor test calibration device according to an embodiment of the present application.
Wherein the reference numerals are as follows: 1-feeding a grain tank; 2-discharging grain boxes; 3-an elevator; 31-lower port; 32-upper port; 33-elevator motor; 4-transmission structure; 41-a conveying motor; 42-conveying pipes and 43-conveying augers; 44-a delivery tube joint; 441-an inlet end; 442-a first outlet end; 443-a second outlet port; 444-end face seal plates; 45-an inlet end flange; 451-connecting holes; 46-frequency converter; 5-a grain storage box; 51-a grain inlet; 52-a grain outlet; 53-the bottom of the grain bin; 54-a bottom extension; 55-a first tank wall; 56-a second tank wall; 57-door; 571-upper box door; 572-lower door; 573-a connecting rod; 574-elongated through holes; 58-a first cylinder assembly; 59-a second cylinder assembly; 581-cylinders; 582-piston rod; k1-a first electromagnetic valve; k2-a second electromagnetic valve; 6-position adjustment structure; 61-a first slide rail; 62-a first slider; 63-a second slide rail; 64-a second slider; 65-third slide rail; 66-a third slider; 67-a sensor mounting rack to be tested; 7-a weighing structure; 8-vibrating structure; 9-a sensor to be measured; 10-stirring structure; 101-a stirring motor; 102-a stirrer; 11-a measurement and control host; 12-controller.
Detailed Description
Embodiments of the present application are described in detail below, examples of which are illustrated in the accompanying drawings, wherein the same or similar reference numerals refer to the same or similar elements or elements having the same or similar functions throughout. The embodiments provided by the embodiments of the present application may be combined with each other without contradiction. The embodiments described below by referring to the drawings are exemplary and intended for the purpose of explaining the present application and are not to be construed as limiting the present application.
In the description of the embodiments of the present application, the terms "first," "second," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present application, the meaning of "plurality" is at least two, such as two, three, etc., unless explicitly defined otherwise.
In this application, unless specifically stated and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; may be a mechanical connection; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the terms in this application will be understood by those of ordinary skill in the art as the case may be.
In this application, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.
The impact type grain yield sensor test calibration device and the test calibration method provided by the embodiment of the application are described in detail below with reference to the accompanying drawings of the specification of the application.
FIG. 1 is a schematic diagram showing a structure of a test calibration device of an impulse grain yield sensor according to an embodiment of the present invention; FIG. 2 is a schematic view of a test calibration device for an impulse grain yield sensor according to an embodiment of the present invention; referring to fig. 1 and 2, the test calibration device of the impulse type grain yield sensor of the present invention includes an upper grain tank 1, a lower grain tank 2, an elevator 3, a transmission structure 4, a grain storage tank 5, a position adjusting structure 6, a weighing structure 7 and a vibration structure 8; the upper grain tank 1 is positioned above the lower grain tank 2; the elevator 3 comprises a lower port 31 and an upper port 32, the lower port 31 is communicated with the lower grain tank 2, and the upper port 32 is communicated with the upper grain tank 1; the grain storage tank 5 is positioned between the upper grain tank 1 and the lower grain tank 2 along the vertical direction; the grain storage tank 5 comprises a grain inlet 51, a grain outlet 52 and an inner cavity; the transmission structure 4 is used for transmitting the grains of the upper grain tank 1 to the grain inlet 51 of the grain storage tank 5; the sensor 9 to be measured is arranged at a grain inlet 51 of the grain storage tank 5; the position adjusting structure 6 is arranged in the inner cavity, and the position adjusting structure 6 is used for adjusting the spatial position of the sensor 9 to be measured in the inner cavity; the grain outlet 52 of the grain storage tank 5 comprises an open state and a closed state, and in the open state, grains in the grain storage tank 5 flow into the lower grain tank 2 through the grain outlet 52; in the closed condition, the grains are stored in the grain bin 5; the weighing structure 7 is used for weighing grains in the lower grain tank 2; the vibrating structure 8 is connected with the grain storage tank 5 and is used for providing vibration to the grain storage tank 5.
With continued reference to fig. 1 and 2, the working principle of the test calibration device of the impulse grain yield sensor of the present invention is as follows: the elevator 3 is used for transferring grains from the lower grain tank 2 to the upper grain tank 1, and then the transfer structure 4 transfers the grains in the upper grain tank 1 to the grain inlet 51 of the grain storage tank, and as the sensor 9 to be tested is arranged at the grain inlet 51, a certain impact force is generated by the sensor 9 to be tested, and the impact force is used for simulating the impact force received by the sensor 9 to be tested when the grain yield is measured in the harvester.
Specifically, the existing sensor calibration device cannot simulate vibration suffered by a harvester during operation, the calibration environment of the sensor is different from the real working environment of the sensor, and test data and calibration data of the sensor may not coincide with the working state of the sensor in the real environment, so that the accuracy of data measured by the sensor is poor, and the change of the yield of grains cannot be accurately reflected; based on the above, the test calibration device in the application is provided with the vibration structure 8, and the vibration structure 8 can generate vibrations with different directions, different amplitudes and different frequencies so as to simulate the vibration environment of the sensor 9 to be tested applied on site, and further, the sensor 9 to be tested can be calibrated in a working environment close to reality as much as possible, and thus, the calibration accuracy can be improved; when the calibrated sensor 9 to be measured is used for a harvester, the yield of grains can be measured more accurately, and the realization of fine agriculture is facilitated.
Please continue to combine fig. 1 and fig. 2, the experimental calibration device of this application is at the during operation, lift conveyer 3 can be with cereal constantly from lower grain tank 2 to last grain tank 1 in, afterwards, transmission structure 4 is with last grain tank 1 in cereal transmission to the grain inlet 51 of depositing grain tank 5, treat that sensor 9 produces certain impact force, afterwards, cereal in depositing grain tank 5 can flow into lower grain tank 2 through grain outlet 52, so, cereal can be constantly in lower grain tank 2, go up grain tank 1 and deposit grain tank 5 continuous circulation, and then can realize that the sensor that awaits measuring is long-time, continuous many times test, help improving the experimental calibration efficiency of awaiting measuring the sensor.
With continued reference to fig. 1 and 2, when the test calibration device of the present application is in operation, the grain outlet 52 of the grain storage tank 5 includes an open state and a closed state, and in the open state, grains in the grain storage tank 5 flow into the lower grain tank 2 through the grain outlet 52; in the closed condition, the grains are stored in the grain bin 5; thus, during the test or calibration process, the grain outlet 52 can be opened for continuous multiple tests; the grain outlet 52 can be closed at any time according to the requirements to stop the test, and the data in the test can be analyzed; afterwards, the grain outlet 52 can be opened again, and the test or calibration can be continued; therefore, the tester can select to test continuously for multiple times, or pause the test, or continue the test according to the specific conditions of the test; to a certain extent, the test and calibration effects and efficiency can be improved.
In addition, when the sensor 9 to be measured needs to be calibrated or compared, the grain outlet 52 can be closed after a period of testing, the grains accumulated in the lower grain tank 2 are statically weighed, and the accumulated grain weight in the static state is used for calibrating or verifying the sensor 9 to be measured. Specifically, the test and calibration device of the present application can weigh grains in the lower grain tank 2 in a state that the grain outlet 52 is opened, but the weight of grains in the lower grain tank 2 is continuously changed in the weighing process, so that the randomness of single measurement is relatively high; therefore, compared with the prior art, the static accumulated weighing of the grains in the lower grain tank 2 has higher accuracy; the method is more suitable for calibration or test verification with higher accuracy requirement.
Different manufacturers and different types of harvesters may have different mounting positions of sensors; the positions of the sensors are different, and the impact force of grains received by the sensors is different; in order to calibrate the sensor of different mounted positions more accurately, the experimental calibration device of this application still includes position adjustment structure 6, can adjust the spatial position of treating the sensor 9 that awaits measuring through position adjustment structure 6 to make the mounted position of the sensor 9 that awaits measuring coincide with the sensor in the actual mounted position in the harvester, so, be favorable to improving the accuracy of experiment and demarcation.
According to the test calibration device, through reasonable arrangement of the upper grain tank 1, the lower grain tank 2, the elevator 3, the transmission structure 4, the grain storage tank 5, the position adjusting structure 6, the weighing structure 7 and the vibration structure 8, the test and calibration of the sensor under different vibration environments and different installation positions can be realized; and continuous testing can be performed according to actual requirements so as to improve the testing efficiency; static accumulated weighing can be performed according to actual requirements, so that the accuracy of calibration and verification is improved; and the whole structure is compact and reasonable, and has very good use effect compared with the existing calibration device.
FIG. 3 is a schematic view showing a position adjusting structure of a calibration device for an impulse type grain yield sensor according to an embodiment of the present invention; as shown in fig. 3, in some embodiments of the present application, the position adjustment structure 6 includes a first sliding rail 61, a second sliding rail 63, a third sliding rail 65, and a sensor mounting rack 67 to be measured, where the first sliding rail 61 is fixedly disposed along a vertical direction, the second sliding rail 63 and the third sliding rail 65 are disposed along a horizontal direction, and sliding directions of the first sliding rail 61, the second sliding rail 63 and the third sliding rail 65 are orthogonal; the second sliding rail 63 is slidably connected with the first sliding rail 61, the third sliding rail 65 is slidably connected with the second sliding rail 63, and the third sliding rail 65 is slidably connected with the sensor mounting frame 67 to be tested.
Referring to fig. 1, fig. 2 and fig. 3, in the present application, the sliding directions of the first sliding rail 61, the second sliding rail 63 and the third sliding rail 65 are orthogonal, the third sliding rail 65 is used for being slidably connected with the to-be-detected sensor mounting rack 67, and the to-be-detected sensor mounting rack 67 is used for mounting the to-be-detected sensor 9; in the XYZ space coordinate system, the first slide rail 61 may be disposed along the Z-axis direction, the second slide rail 63 may be disposed along the X-axis direction, and the third slide rail 65 may be disposed along the Y-axis direction; thus, the position of the sensor 9 to be measured in the Z-axis direction can be adjusted by sliding the second slide rail 63 in the vertical direction on the first slide rail 61; by adjusting the sliding position of the third slide rail 65 on the second slide rail 63, the position of the sensor 9 to be measured in the X-axis direction can be adjusted; the position of the sensor 9 to be measured in the Y-axis direction can be adjusted by adjusting the sliding position of the sensor 9 to be measured on the third slide rail 65; and further the adjustment of the spatial position of the sensor 9 to be measured is realized.
With continued reference to fig. 3, in some embodiments of the present application, the position adjustment structure 6 further includes a first slider 62, a second slider 64, and a third slider 66, the second slider 63 is slidably connected to the first slider 61 through the first slider 62, and the third slider 65 is slidably connected to the second slider 63 through the second slider 64; the sensor 9 to be measured is slidingly connected with the third slide rail 65 by a third slide block 66.
The position adjusting structure 6 mainly adopts three sliding rails to realize the adjustment of the space position of the sensor to be measured, and has the advantages of simple structure, reliable work, easy realization and the like; it should be noted that fig. 3 illustrates only one implementation of the position adjustment structure, and in fact, the position adjustment structure used in the present application is not limited to the structure illustrated in fig. 6, and may be implemented in various manners, such as a mechanical arm, a lifting turntable, and the like.
Fig. 4 is a schematic diagram showing a combined structure of a grain tank and a transmission structure on a calibration device for testing impulse-type grain yield sensor according to an embodiment of the present invention, referring to fig. 4, the transmission structure 4 includes a transmission motor 41, a frequency converter 46, a transmission pipe 42, and a transmission auger 43; the conveying auger 43 is arranged in the conveying pipe 42; the frequency converter 46 is used for controlling the rotation parameters of the conveying motor 41; the conveying motor 41 is used for providing power for the conveying auger 43; the conveying pipe 42 is positioned between the upper grain tank 1 and the grain storage tank 5 along the vertical direction; the upper grain tank 1 and the grain storage tank 5 are positioned at different positions of the conveying pipe 42 along the horizontal direction; the conveying pipe 42 corresponds to the upper grain tank 1, and an upper grain tank interface is arranged at the bottom of the upper grain tank 1; the pipe wall of the conveying pipe 42 is provided with a conveying pipe interface which is in butt joint with the upper grain box interface, and the upper grain box 1 is communicated with the conveying pipe 42 through the upper grain box interface and the conveying pipe interface; the conveying pipe 42 corresponds to the grain storage tank 5, and the conveying pipe 42 is provided with a conveying pipe outlet for conveying grains to the grain storage tank 5.
Specifically, referring to fig. 1 and 4, as described above, the transmission structure 4 is configured to transmit the grains of the upper grain tank 1 to the grain inlet of the grain tank 5, so as to form an impact force on the sensor 9 to be tested located in the grain tank 5, so as to simulate the impact force of the grains received by the sensor in the harvester.
In general, the grain yield is different from one plot to another, from one place to another, from one year to another, due to the influence of the conditions of the topography of the farmland, the soil characteristics, the application of fertilizers, the irrigation probability, meteorological factors, diseases, weeds, etc., so that impact force applied to the grain yield sensor for measuring the grain installed in the harvester is different in the working process; generally, when Gu Wuchan is high, the grain flow rate through the impulse grain yield sensor is large, and the impact force received by the impulse grain yield sensor is large; conversely, if the grain yield is small, the grain flow rate through the impulse grain yield sensor is small, and the impact force received by the impulse grain yield sensor is also small; thus, if the impulse grain yield sensor can be calibrated at different grain flows, the accuracy of the measurement of the impulse grain yield sensor at different grain flows is facilitated.
With continued reference to fig. 1 and 4, in some embodiments of the present application, the transmission structure 4 includes a conveying motor 41, a frequency converter 46, a conveying pipe 42, and a conveying auger 43; the conveying auger 43 is arranged in the conveying pipe 42; the frequency converter 46 is used for controlling the rotation parameters of the conveying motor 41; the conveying motor 41 is used for providing power for the conveying auger 43; in this way, the frequency converter 46 can be used to adjust the rotation speed of the conveying motor 41, and further adjust the rotation speed of the conveying auger 43, the higher the rotation speed of the conveying auger 43 is, the more grains are conveyed in unit time, and the larger the impact force received by the sensor 9 to be tested is; conversely, the lower the rotation speed of the conveying auger 43, the less grains are conveyed in unit time, and the less impact force is applied to the sensor 9 to be tested; therefore, the impact force applied to the sensor 9 to be measured can be changed by changing the transmission flow through the transmission structure consisting of the transmission motor 41, the frequency converter 46, the transmission pipe 42 and the transmission auger 43; therefore, the sensor 9 to be measured can be calibrated under different impact forces, and the accuracy of the sensor 9 to be measured in actual use is improved.
Fig. 5 is a schematic structural view of a pipe joint for conveying in an impulse type grain yield sensor test calibration device according to an embodiment of the present invention, and fig. 6 is a schematic structural view of a conveying structure in an impulse type grain yield sensor test calibration device according to an embodiment of the present invention; referring to fig. 4, 5 and 6, in some embodiments of the present application, the conveying structure 4 further includes a conveying pipe joint 44, where the conveying pipe joint 44 includes an inlet end 441 and a first outlet end 442; the inlet end 441 communicates with the first outlet end 442, and the axis of the inlet end 441 intersects the axis of the first outlet end 442; the inlet end 441 also carries an inlet end flange 45; the delivery tube connection 44 is detachably connected with the delivery tube 42 by an inlet end flange 45; the delivery auger 43 extends from the delivery tube 42 at least to a first outlet end 442 of the delivery tube connector 44. The conveyor screw 43 may transport the grain within the conveyor pipe 42 to the first outlet end 442 of the conveyor pipe joint 44. As mentioned above, the mounting positions of the impulse type grain yield sensors of different manufacturers and different models of harvesters may be different, and the positions of the grain outlets of the harvesters and the impulse type grain yield sensors are different, so that the stress directions and the stress sizes of the impulse type grain yield sensors are different.
Specifically, referring to fig. 1, 4, 5 and 6, in the embodiment of the present application, the circumference of the inlet flange 45 is provided with a plurality of connection holes 451, and a corresponding flange is also provided at one end of the outlet of the conveying pipe 42, and when the conveying pipe joint 44 is connected to the conveying pipe 42, the inlet flange 45 may be rotated to adjust the orientation of the first outlet 442 relative to the sensor 9 to be measured, so that the conveying pipe joint 44 may be aligned to the sensor 9 to be measured at different inclination angles, so as to enable grains to strike the sensor 9 to be measured from different angles; therefore, the test calibration device can calibrate impulse grain yield sensors in different stress directions so as to adapt to different application environments.
Referring to fig. 1, 4, 5 and 6, in some embodiments of the present application, the number of delivery tube connectors 44 is plural, and the shapes of the first outlet ends 442 of different delivery tube connectors 44 are different; one of the plurality of delivery tube connectors 44 is removably coupled to the delivery tube 42.
Specifically, the number of delivery tube fittings 44 is plural, and the first outlet end 442 of the delivery tube fitting 44 can be machined to various forms with different tapers, such as: the device can be cylindrical as shown in fig. 4, conical, or horn-shaped; the first outlet end 442 has different shapes and different ranges for striking the sensor 9 to be measured; when the sensor 9 to be measured is calibrated, calibration can be performed under the condition that different conveying pipe joints are used by the calibration device, so that the calibration data of grains impacting the sensor 9 to be measured from different ranges can be realized; the accuracy of the application of the later impulse grain yield under different environments is convenient to improve.
In addition, in other embodiments of the present application, the delivery tube joint 44 further includes a second outlet end 443 and an end face seal plate 444, where the second outlet end 443 may be coaxial with the inlet end 441, and the second outlet end 443 communicates with the inlet end 441, and the end face seal plate 444 is used to seal the second outlet end 443 when the calibration device is in operation; the end closure 444 is removed to allow cleaning of the grains within the delivery tube joint 44.
With continued reference to fig. 2, in some embodiments of the present application, a grain inlet 51 is provided at the top of the grain bin 5; the grain outlet 52 is arranged at the side part of the grain storage tank 5; the upward side of the bottom 53 of the grain storage box is an inclined plane; the side of the grain storage tank 5 provided with the grain outlet 52 is also provided with a bottom extension section 54, the slope of the upward side of the bottom extension section 54 is the same as the slope of the upward side of the bottom 53 of the grain storage tank, and the bottom extension section 54 is connected with the bottom 53 of the grain storage tank; the inclined directions of the inclined planes of the bottom 53 and the bottom extension section 54 of the grain storage tank are towards the lower grain storage tank 2, and one end of the bottom extension section 54, which is far away from the bottom 53 of the grain storage tank, is positioned above the grain inlet of the lower grain storage tank 2.
Specifically, referring to fig. 1 and 2, as mentioned above, when the test calibration device is operated, in one case, grains in the upper grain tank 1 flow into the grain tank 5 through the transmission structure 4; the present application sets up the top at grain tank 5 with advancing grain inlet 51, so, the grain in the grain tank 1 of being convenient for more flows into grain tank 5 through transmission structure 4.
On the basis, in order to enable the test calibration device to continuously test the sensor 9 to be tested, grains in the grain storage tank 5 need to flow into the lower grain tank 2 again; in the embodiment of the application, the upward surface of the bottom 53 of the grain storage tank is an inclined surface, the upward surface of the bottom extension section 54 of one side of the grain storage tank 5, which is provided with the grain outlet 52, is also an inclined surface, and the bottom extension section 54 extends to the upper side of the grain inlet of the lower grain tank 2; thus, the grains enter from the upper part of the grain storage tank 5 and fall to the bottom 53 of the grain storage tank under the action of gravity, and as the upward surfaces of the bottom 53 and the bottom extension section 54 of the grain storage tank are inclined surfaces, the grains falling to the bottom 53 of the grain storage tank slowly flow into the lower grain tank 2 along the inclined surfaces; in the process, no external force acts, and the test calibration device only depends on the gravity of grains to realize grain transfer between the grain storage tank 5 and the lower grain tank 2; therefore, to a certain extent, the test calibration device has the characteristics of ingenious conception and simple composition structure.
With continued reference to fig. 2, in some embodiments of the present application, the grain bin 5 includes a first bin wall 55, a second bin wall 56, and a bin door 57; the first tank wall 55 and the second tank wall 56 are arranged opposite to each other; the door 57 is installed between the first and second walls 55 and 56; the box door 57 includes an upper box door 571 and a lower box door 572, the upper box door 571 being fixedly connected to upper portions of the first box wall 55 and the second box wall 56; the lower part of the upper box door 571 is provided with a distance from the bottom 53 of the grain storage box, and the grain outlet 52 is formed at the distance; the lower door 572 is located at one side of the upper door 571 and is used for moving up and down along the vertical direction to open and close the grain outlet.
Specifically, referring to fig. 2, as shown in fig. 2, a main portion of the lower door 572 is located below the upper door 571; when the grain outlet 52 needs to be opened, the lower box door 572 slides upwards in the vertical direction and is partially overlapped with the upper box door 571, and the grain outlet 52 is opened; when the grain outlet 52 needs to be closed, the lower door 572 slides downward in the vertical direction, closing the grain outlet 52.
Based on the foregoing, the grain outlet 52 of the present application has an open and a closed state, and the present application realizes the opening and closing of the grain outlet 52 through the lower door 572 that can move along the vertical direction, and the grain outlet 52 is in the open and closed state, and the occupied space of the grain storage box 5 is basically unchanged, and the overall structure is compact, and the installation space is saved.
It should be noted that fig. 2 illustrates only one structure of the door 57, and in other embodiments of the present application, it is possible to open the grain outlet 52 in a side-open manner.
With continued reference to fig. 2, in some embodiments of the present application, movement of the lower door 572 in the vertical direction may be accomplished by a cylinder assembly. The specific implementation structure is as follows:
two ends of the upper part of the lower box door 572 are respectively provided with a connecting rod 573; the opposite positions of the first box wall 55 and the second box wall 56 are provided with a group of sliding rails in the vertical direction, the sliding rails are used for installing the lower box door 572, in addition, the opposite positions of the first box wall 55 and the second box wall 56 are also provided with a group of strip-shaped through holes 574 arranged in the vertical direction, and the strip-shaped through holes 574 are positioned above the sliding rails. When the lower box door 572 is installed, the lower part is positioned in the sliding rail of the guide rail, and the connecting rod 573 at the upper part extends out of the strip-shaped through hole 574; when the lower box door 572 moves in the vertical direction, the length of the elongated through hole 574 is the up-and-down movement space of the lower box door 572.
The power for opening and closing the lower door 572 may be derived from a cylinder assembly including a gas source, a first solenoid valve K1, a second solenoid valve K2, a first cylinder assembly 58, and a second cylinder assembly 59; the air source is a compressed air source and is connected with a first electromagnetic valve K1, the first electromagnetic valve K1 is respectively connected with air inlets of a first air cylinder assembly 58 and a second air cylinder assembly 59 through a tee joint, and the second electromagnetic valve K2 is respectively connected with air outlets of the first air cylinder assembly 58 and the second air cylinder assembly 59 through a tee joint; the first air cylinder assembly 58 and the second air cylinder assembly 59 are respectively arranged below the two connecting rods 573, and the first air cylinder assembly 58 and the second air cylinder assembly 59 have the same composition structure and comprise an air cylinder 581 and a piston rod 582; the lower part of the piston rod 582 is arranged in the cylinder 581, the upper part of the piston rod 582 is of an arc-shaped structure, and can generate linear reciprocating motion under the pushing of air pressure to push the connecting rod 573 to synchronously act, so that the lower box door 572 is driven to slide reciprocally along the vertical direction, and the grain outlet 52 is opened and closed.
The opening and closing of the grain outlet 52 can be flexibly and automatically controlled by adopting the cylinder to control the lower box door 572, so that the grains are temporarily stored in the grain storage box 5 or directly fall into the flexible switching of the test mode of the lower grain box 2.
With continued reference to fig. 1 and 4, in some embodiments of the present application, a stirring structure 10 is further provided in the upper tank 1. Specifically, the stirring structure 10 can continuously push grains in the upper grain tank 1 to the conveying structure 4 so as to meet the stable conveying flow of the conveying structure 4, thereby ensuring the smooth proceeding of the testing process.
FIG. 7 is a block diagram illustrating the operation of the control portion of the test calibration apparatus for impulse-type grain yield sensor provided in the examples of the present application, please continue to refer to FIGS. 1 and 7, in some embodiments of the present application, the test and calibration apparatus includes a controller 12 and a measurement and control host 11; the measurement and control host 11 is used for sending instruction information to the controller 12, and controlling the work of the elevator 3, the work of the stirring structure 10, the work of the position adjusting structure 6, the work of the transmission structure 4, the opening and closing of the grain outlet 52 and the vibration of the vibration structure 8 through the controller 12; the controller 12 is controlled to collect measurement data of the weighing structure 7 and the sensor 9 to be measured, the measurement data of the weighing structure 7 is compared with the measurement data of the sensor 9 to be measured to obtain calibration data, and the calibration data is written into the sensor 9 to be measured; but also for the querying of historical data.
The automatic calibration device can realize the automatic performance of the test calibration process by arranging the controller 12 and the measurement and control host 11, improves the test efficiency, and avoids measurement errors caused by too much manpower.
With continued reference to fig. 1, 2 and 7, in some embodiments of the present application, elevator 3 is driven by elevator motor 33; controller 12 may operate elevator 3 by controlling elevator motor 33; the stirring structure includes a stirring motor 101 and a stirrer 102, and the controller 12 can control the stirrer 102 to operate by controlling the stirring motor 101.
With continued reference to fig. 1, 4 and 7, in some embodiments of the present application, the transmission structure 4 includes not only the conveying motor 41 but also the frequency converter 46; the controller 12 stably adjusts the rotating speed of the conveying motor 41 through the frequency converter 46, thereby achieving the effect of adjusting the grain conveying flow, and further changing the impact force born by the sensor 9 to be tested; therefore, the sensor 9 to be measured can be calibrated under different impact forces, and the accuracy of the sensor 9 to be measured in actual use is improved. With continued reference to fig. 1, 2, 3 and 7, in some embodiments of the present application, the controller 12 may control the sliding directions of the first slider 62, the second slider 64 and the third slider 66 in the position adjusting structure 6, so as to drive the sensor 9 to be measured to flexibly move along the three directions of the X axis, the Y axis and the Z axis, so as to achieve flexible adjustment of the relative positions of the sensor 9 to be measured and the pipe joint 44 in the three directions of the X axis, the Y axis and the Z axis.
With continued reference to fig. 1, 2 and 7, in some embodiments of the present application, the controller 12 controls the first solenoid valve K1 to be in a conducting state, and the second solenoid valve K2 to be in a blocking state, and compressed gas is introduced into the first cylinder assembly 58 and the second cylinder assembly 59 through the tee joint, the compressed gas pushes the piston rod 582 to move upward, and then pushes the connecting rod 573 to move upward, the lower box door 572 is driven by the connecting rod 573 to move upward, the grain outlet 52 is opened, and grains in the grain bin 5 can enter the lower grain bin 2 along the bottom 53 and the bottom extension section 54 of the grain bin under the action of gravity, so that automatic circulation of the grains in the test calibration device is realized, and no manual loading of the grains is required.
When the controller 12 controls the first solenoid valve K1 to be in a cut-off state and the second solenoid valve K2 to be in a conduction state, compressed gas in the first cylinder assembly 58 and the second cylinder assembly 59 is discharged from the air leakage port of the cylinder 581 through the tee joint, the piston rod 582 is reset to move downwards, the lower box door 572 moves downwards under the action of gravity and finally falls on the bottom 53 of the grain storage box, the grain outlet 52 is closed, grains are prevented from entering the grain storage box 5 into the grain storage box 2, the grains are temporarily stored in the grain storage box 5, and at the moment, the grains in the grain storage box 2 can be weighed.
With continued reference to fig. 1 and 7, in some embodiments of the present application, the vibrating structure 8 includes a vibrating table, the vibrating table is fixed on the ground, and the grain bin 5 is disposed on the vibrating table; the controller 12 controls the vibration structure 8 to generate vibration with different directions, different amplitudes and different frequencies, so as to drive the sensor 9 to be tested, and simulate the vibration environment of the sensor 9 to be tested in field application.
With continued reference to fig. 1 and 7, in some embodiments of the present application, the weighing structure 7 includes a weighing sensor disposed at the bottom of the lower grain tank 2 for weighing grains in the lower grain tank 2; the controller 12 can also collect weight signals output by the weighing sensor, so as to realize the measurement of the weight of grains in the lower grain tank 2, calculate the actual flow of the grains, and realize the automatic calibration of the to-be-measured sensor 9 by comparing the actual flow with the data measured by the to-be-measured sensor 9.
In some embodiments of the present application, the controller 12 may write calibration data to the sensor 9 under test in the form of a bus.
To sum up, in some embodiments of the present application, the same controller 12 may be used to control the operation of the elevator 3, the operation of the stirring structure 10, the operation of the position adjustment structure 6, the operation of the conveying structure 4, the opening and closing of the grain outlet 52, and the vibration of the vibration structure 8; the measurement data of the weighing structure 7 and the sensor 9 to be measured are analyzed, and calibration data are written into the sensor 9 to be measured and are also used for inquiring historical data; therefore, the interference of human factors in the calibration process can be reduced, and the calibration efficiency and accuracy are improved.
In addition, in some embodiments of the present application, a tester may implement parameter setting and issue an instruction to the controller 12 through the man-machine interface of the measurement and control host 11, write calibration data into the sensor 9 to be measured, and query real-time, historical test data and calibration data; has the characteristics of intuitiveness, convenience and easy operation.
Based on the test calibration device, the application also provides a test calibration method of the impulse type grain yield sensor, which comprises the following steps:
setting test parameters;
adding a proper amount of grains into the lower grain tank 2;
controlling the stirring structure 10 to act;
opening a grain outlet 52 of the grain storage tank 5, and emptying grains in the grain storage tank 5;
closing the grain outlet 52 of the grain storage tank 5;
controlling the position adjusting structure 6 to enable the sensor 9 to be detected to be at a preset position;
controlling the vibration structure 8 to generate a vibration signal;
controlling the elevator 3 to lift grains in the lower grain tank 2 into the upper grain tank 1; when the grains loaded in the grain feeding box 1 reach the preset quantity, controlling the elevator 3 to stop working; the grains reaching the preset quantity at least can meet the one-time measurement requirement of the sensor to be measured;
the grain weight value in the lower grain tank 2 output by the weighing structure 7 is collected, and the value is recorded and stored;
Control the conveying structure 4 to push the grains in the upper grain tank 1 towards the first outlet end 442 of the outlet pipe joint 44;
collecting and storing grain flow data output by the sensor 9 to be detected in real time;
according to grain flow data output by the sensor 9 to be detected, calculating the weight of grains accumulated in the time of the preset collection times, and recording;
the grains in the grain storage tank 5 are emptied into the lower grain tank 2;
the grain weight value in the lower grain tank 2 output by the weighing structure 7 is collected, recorded and stored;
the difference value of the output weight of the weighing structure 7 is measured twice before and after the test is calculated, the actual weight of the grains accumulated in the time of the collection times is calculated, meanwhile, the difference value of the actual weight of the grains and the weight of the grains measured by the sensor 9 to be measured is calculated, and the difference value data of the actual weight of the grains and the weight of the grains measured by the sensor 9 to be measured is recorded and stored, wherein the difference value data is calibration data.
Based on the test calibration device, the application also provides a test calibration method of the second impulse type grain yield sensor, which comprises the following steps:
setting test parameters;
adding a proper amount of grains into the lower grain tank 2;
controlling the stirring structure 10 to act;
opening a grain outlet 52 of the grain storage tank 5, and emptying grains in the grain storage tank 5;
Controlling the position adjusting structure 6 to enable the sensor 9 to be detected to be at a preset position;
controlling the vibration structure 8 to generate a vibration signal;
controlling the elevator 3 to lift grains in the lower grain tank 2 into the upper grain tank 1; when the grains loaded in the upper grain tank 1 reach the preset quantity, the transmission structure 4 is controlled to push the grains in the upper grain tank 1 to the first outlet end 442 of the outlet conveying pipe joint 44; the grains reaching the preset quantity at least can meet the one-time measurement requirement of the sensor to be measured;
in the process, continuously collecting the weight value of the grains in the lower grain tank 2 output by the weighing structure 7, and recording and storing the value; synchronously and continuously collecting and storing grain flow data output by the sensor 9 to be detected;
the grain weight value measured by the weighing structure 7 and grain flow data output by the sensor 9 to be measured are analyzed to generate test data and calibration data.
The basic principle of the two test calibration methods is the same, and the difference is that in the first calibration method, the grain weight measurement time point is two times, and the first time is that the measurement is performed after the elevator 3 stops working and before the transmission structure 4 starts working; during this period, the grain in the lower tank 2 is not increased nor decreased, and the measured grain weight is the weight of the grain in a static state, i.e., the initial value of the weight of the grain in the lower tank 2; the second time is to measure the weight of the grains after the grains in the grain storage tank 5 are emptied into the lower grain tank 2, wherein the measured weight of the grains is the weight of the grains in a static state and is the weight of the grains accumulated in a preset period of time; thus, in the first calibration method, the weight of the cereal is measured by the weighing structure 7 as the weight of the cereal in a static state; the accuracy of the weight of the grain measured in a static state is higher, and the data is used for calibrating the sensor 9 to be measured, so that the accuracy is higher.
In the second calibration method, in the test process, under the condition that grains continuously flow, grain weight values in the lower grain tank 2 output by the weighing structure 7 and grain flow data output by the sensor 9 to be tested are collected, so that the grain weight obtained by the weighing structure 7 is also grain weight obtained under a dynamic condition, and the data has randomness compared with the data obtained under a static state, and the error is slightly larger; however, compared with the first calibration method, the second calibration method can be used for continuous repeated cyclic test, and has higher test efficiency.
Fig. 8 is a flowchart of a first test calibration method of the impact grain yield sensor test calibration device according to the embodiment of the present application, which is implemented as follows:
1) Connecting the selected delivery pipe joint 44 with the delivery pipe 42 by bolts according to preset positions;
2) The tester sets up parameter sequences such as the number of test groups, the number of times of each group of test, the test time interval, the position coordinates of the sensor 9 to be tested, the output frequency of the frequency converter 46 of the conveying motor 41, the vibration direction, the vibration amplitude, the frequency, the acceleration and the like of the vibration structure 8 through the man-machine interaction interface of the measurement and control host 11;
3) Adding a proper amount of grains into the lower grain tank 2;
4) The controller 12 controls the stirring structure 10 to act;
5) The controller 12 outputs a control signal, opens the grain outlet 52 and empties grains in the grain storage tank 5;
6) The controller 12 outputs a control signal to close the grain outlet 52;
7) The controller 12 controls the third sliding block 66 in the position adjusting structure 6 to move along the X axis, the Y axis and the Z axis, and stops the movement of the position adjusting structure 6 after reaching the preset position of the sensor 9 to be detected;
8) The controller 12 controls the vibration structure 8 to generate vibration signals according to the set parameters such as direction, amplitude, frequency, acceleration and the like;
9) The controller 12 controls the frequency converter 46 of the conveying motor 41 to output frequency to a set value;
10 Controller 12 controls elevator 3 to lift grains in lower tank 2 into upper tank 1;
11 When the grains loaded in the upper grain tank 1 reach the preset quantity, the controller 12 controls the elevator 3 to stop working; the grains reaching the preset quantity at least can meet the one-time measurement requirement of the sensor 9 to be measured; specifically, a preset number of grains is determined according to the number of tests; for example, if each set of tests includes six tests, then the preset number of grains would need to meet the six measurement requirements of the sensor 9 under test; if each set of tests comprises one test, the preset number of grains is required to meet the one measurement requirement of the sensor 9 to be tested;
12 The controller 12 collects the weight value of the grains in the lower grain tank 2 output by the weighing sensor, and records and stores the value;
13 A frequency converter 46 of the conveying motor 41 is started, the conveying motor 41 is controlled to rotate, the conveying auger 43 is driven to act, and grains in the upper grain tank 1 are pushed to the conveying pipe joint 44;
14 A controller 12 collects and stores grain flow data output by the sensor 9 to be measured;
15 Repeating step 14 when the number of tests does not reach the preset value;
16 When the number of tests reaches a preset value, the controller 12 stops the output of the conveyor motor frequency converter 46;
17 The controller 12 calculates the accumulated grain weight in the time of the preset collection times according to the grain flow data output by the to-be-detected sensor 9 of the recorded preset collection times, and records the data;
18 The controller 12 outputs a control signal, opens the grain outlet 52, and empties grains in the grain storage tank 5 into the lower grain tank 2;
19 The controller 12 collects the weight value of the grains in the lower grain tank 2 output by the weighing sensor, and records and stores the value;
20 The controller 12 calculates the actual weight of the grain within the time of the preset collection times by calculating the difference value of the output weight of the weighing sensor measured twice, and simultaneously calculates the difference value of the actual weight of the grain and the calculated weight of the grain output by the sensor 9 to be measured, and records and stores the data;
21 Repeating steps 6 to 20 when the number of the test groups does not reach the preset value;
22 When the number of test groups reaches a preset value, the controller 12 outputs a control signal to close the grain outlet 52;
23 The controller 12 analyzes and calculates the stored data to generate test data and calibration data, and transmits the test data and the calibration data to the measurement and control host 11, wherein the test data and the calibration data are stored in the measurement and control host 11;
24 When the sensor 9 to be tested is required to be calibrated, a tester writes calibration data into the sensor 9 to be tested through the controller 12 by operating the man-machine interaction interface of the measurement and control host 11, and the test flow is ended;
25 If the sensor 9 to be tested is not required to be calibrated, ending the test flow.
Fig. 9 is a flowchart of a second test calibration method of the impact grain yield sensor test calibration device according to the embodiment of the present application, which is implemented as follows:
1) Connecting the selected delivery pipe joint 44 with the delivery pipe 42 by bolts according to preset positions;
2) The tester sets up parameter sequences such as the number of test groups, the number of times of each group of test, the test time interval, the position coordinates of the sensor 9 to be tested, the output frequency of the frequency converter 46 of the conveying motor 41, the vibration direction, the vibration amplitude, the frequency, the acceleration and the like of the vibration structure 8 through the man-machine interaction interface of the measurement and control host 11;
3) Adding a proper amount of grains into the lower grain tank 2;
4) The controller 12 controls the stirring structure 10 to act;
5) The controller 12 outputs a control signal, opens the grain outlet 52 and empties grains in the grain storage tank 5;
6) The controller 12 controls the third sliding block 66 of the position adjusting structure 6 to move along the X axis, the Y axis and the Z axis, and stops the movement of the position adjusting structure 6 after reaching the preset position of the sensor 9 to be detected;
7) The controller 12 controls the vibration structure 8 to generate vibration signals according to the set parameters such as direction, amplitude, frequency, acceleration and the like;
8) The controller 12 controls the output frequency of the frequency converter 46 of the conveying motor 41 to a set value;
9) Controller 12 controls the elevator to lift grains in lower grain tank 2 into upper grain tank 1;
10 When the grains loaded in the upper grain tank 1 reach the preset quantity, the frequency converter 46 of the conveying motor 41 is started, the conveying motor 41 is controlled to rotate, the conveying auger 43 is driven to act, and the grains in the upper grain tank 1 are pushed to the conveying pipe joint 44; the grains reaching the preset quantity at least can meet the one-time measurement requirement of the sensor 9 to be measured; specifically, a preset number of grains is determined according to the number of tests; for example, if each set of tests includes six tests, then the preset number of grains would need to meet the six measurement requirements of the sensor 9 under test; if each set of tests comprises one test, the preset number of grains is required to meet the one measurement requirement of the sensor 9 to be tested;
11 The controller 12 collects the weight value of the grains in the lower grain tank 2 output by the weighing sensor, and records and stores the value; the controller 12 collects and stores grain flow data output by the sensor 9 to be detected;
12 Repeating step 11 when the number of tests does not reach the preset value;
13 When the number of tests reaches a preset value, the controller 12 stops the output of the frequency converter 46 of the conveying motor 41 and stops the elevator;
14 Repeating steps 6 to 13 when the number of the test groups does not reach the preset value;
15 When the number of test groups reaches a preset value, the controller 12 outputs a control signal to close the grain outlet 52;
16 The controller 12 analyzes and calculates the stored data to generate test data and calibration data, and transmits the test data and the calibration data to the measurement and control host 11, wherein the test data and the calibration data are stored in the measurement and control host 11;
17 When the sensor 9 to be tested is required to be calibrated, a tester writes calibration data into the sensor 9 to be tested through the controller 12 by operating the man-machine interaction interface of the measurement and control host 11, and the test flow is ended;
18 If the sensor 9 to be tested is not required to be calibrated, ending the test flow.
In summary, the test calibration device and the adaptive calibration method provided by the application can simulate a vibration environment, are suitable for grain yield sensors installed on various harvester types, can continuously test and test, and can adjust grain flow; the method can be used for testing in the research and development process of impulse type grain yield sensors and can also be used for calibrating impulse type grain yield sensors; the test calibration device can solve the problems of poor accuracy, complicated process, low automation degree and the like of the conventional test calibration device, has the characteristics of high test accuracy, simplicity in operation, good universality, convenience in use and the like, and has very important significance for testing impulse-type grain yield sensors.
Finally, it should be noted that: the above embodiments are merely for illustrating the technical solution of the present application, and are not limiting thereof; although the present application has been described in detail with reference to the foregoing embodiments, it should be understood by those of ordinary skill in the art that: the technical scheme described in the foregoing embodiments can be modified or some or all of the technical features thereof can be replaced with equivalents; such modifications and substitutions do not depart from the essence of the corresponding technical solutions from the scope of the technical solutions of the embodiments of the present application.
Claims (7)
1. The test calibration device of the impulse type grain yield sensor is characterized by comprising an upper grain tank (1), a lower grain tank (2), an elevator (3), a transmission structure (4), a grain storage tank (5), a position adjusting structure (6), a weighing structure (7) and a vibration structure (8);
the upper grain tank (1) is positioned above the lower grain tank (2);
the elevator (3) comprises a lower port (31) and an upper port (32), the lower port (31) leading to the lower tank (2) and the upper port (32) leading to the upper tank (1);
the grain storage box (5) is positioned between the upper grain box (1) and the lower grain box (2) along the vertical direction; the grain storage box (5) comprises a grain inlet (51), a grain outlet (52) and an inner cavity;
The transmission structure (4) is used for transmitting the grains of the upper grain tank (1) to a grain inlet (51) of the grain storage tank (5);
the grain inlet (51) of the grain storage box (5) is used for arranging a sensor (9) to be detected;
the position adjusting structure (6) is arranged in the inner cavity, and the position adjusting structure (6) is used for adjusting the spatial position of the sensor (9) to be measured in the inner cavity;
the grain outlet (52) of the grain storage tank (5) comprises an open state and a closed state, and in the open state, grains in the grain storage tank (5) flow into the lower grain tank (2) through the grain outlet (52); in the closed state, the grains are stored in the grain storage tank (5);
the weighing structure (7) is used for weighing grains in the lower grain tank (2);
the vibration structure (8) is connected with the grain storage tank (5) and is used for providing vibration for the grain storage tank (5);
the conveying structure (4) comprises a conveying motor (41), a frequency converter (46), a conveying pipe (42) and a conveying auger (43); the conveying auger (43) is arranged in the conveying pipe (42); the frequency converter (46) is used for controlling the rotation parameters of the conveying motor (41); the conveying motor (41) is used for providing power for the conveying auger (43);
The conveying pipe (42) is positioned between the upper grain tank (1) and the grain storage tank (5) along the vertical direction;
the upper grain tank (1) and the grain storage tank (5) are positioned at different positions of the conveying pipe (42) along the horizontal direction;
the conveying pipe (42) is arranged at a position corresponding to the upper grain tank (1), and an upper grain tank interface is arranged at the bottom of the upper grain tank (1); the pipe wall of the conveying pipe (42) is provided with a conveying pipe interface which is in butt joint with the upper grain box interface, and the upper grain box (1) is communicated with the conveying pipe (42) through the upper grain box interface and the conveying pipe interface;
the conveying pipe (42) is arranged at a position corresponding to the grain storage tank (5), and the conveying pipe (42) is provided with a conveying pipe outlet for conveying grains to the grain storage tank (5);
the transfer structure (4) further comprises a transfer coupling (44), the transfer coupling (44) comprising an inlet end (441) and a first outlet end (442); -said inlet end (441) communicates with said first outlet end (442), and-the axis of said inlet end (441) intersects the axis of said first outlet end (442); the inlet end (441) also has an inlet end flange (45); the first outlet end (442) faces the sensor (9) to be measured;
The delivery pipe joint (44) is detachably connected with the delivery pipe (42) at the outlet of the delivery pipe through the inlet end flange (45);
the conveying auger (43) extends from the conveying pipe (42) at least to a first outlet end (442) of the conveying pipe joint (44);
the number of the delivery pipe joints (44) is a plurality, and the shapes of the first outlet ends (442) of different delivery pipe joints (44) are different; one of a plurality of delivery tube connectors (44) is detachably connected to the delivery tube (42);
the grain feeding box (1) is also provided with a stirring structure (10).
2. The test calibration device of an impulse grain yield sensor according to claim 1, wherein the position adjusting structure (6) comprises a first sliding rail (61), a second sliding rail (63), a third sliding rail (65) and a to-be-tested sensor mounting rack (67), the first sliding rail (61) is fixedly arranged along a vertical direction, the second sliding rail (63) and the third sliding rail (65) are arranged along a horizontal direction, and the sliding directions of the first sliding rail (61), the second sliding rail (63) and the third sliding rail (65) are orthogonal; the second sliding rail (63) is in sliding connection with the first sliding rail (61), the third sliding rail (65) is in sliding connection with the second sliding rail (63), and the third sliding rail (65) is in sliding connection with the to-be-detected sensor mounting frame (67).
3. Test calibration device for an impulse grain yield sensor according to any one of claims 1-2, characterized in, that the grain inlet (51) is arranged at the top of the grain bin (5); the grain outlet (52) is arranged at the side part of the grain storage box (5);
the upward surface of the bottom (53) of the grain storage box is an inclined surface; the grain storage box (5) is provided with a grain outlet (52), one side of the grain storage box is also provided with a bottom extension section (54), one upward surface of the bottom extension section (54) is also an inclined surface, and the bottom extension section (54) is connected with the bottom (53) of the grain storage box;
the inclined directions of the inclined planes of the bottom (53) and the bottom extension section (54) of the grain storage box face the lower grain storage box (2), and one end of the bottom extension section (54) away from the bottom (53) of the grain storage box is located above a grain inlet (51) of the lower grain storage box (2).
4. A test calibration device for an impulse grain yield sensor according to claim 3, characterized in that the grain bin (5) further comprises a first bin wall (55), a second bin wall (56) and a bin door (57);
the first tank wall (55) and the second tank wall (56) are oppositely arranged and are positioned above the bottom (53) of the grain storage tank;
The box door (57) is installed between the first box wall (55) and the second box wall (56);
the box door (57) comprises an upper box door (571) and a lower box door (572), wherein the upper box door (571) is fixedly connected with the upper parts of the first box wall (55) and the second box wall (56); the lower part of the upper box door (571) is provided with a distance from the bottom (53) of the grain storage box, and the grain outlet (52) is formed at the distance;
the lower box door (572) is located at one side of the upper box door (571), and the lower box door (572) is used for moving upwards or downwards relative to the upper box door (571) along the vertical direction, so that the grain outlet (52) is opened and closed.
5. The test calibration device of an impulse grain yield sensor as claimed in claim 4, further comprising a controller (12) and a measurement and control host (11);
the measurement and control host (11) is used for sending instruction information to the controller (12), and controlling the operation of the elevator (3), the operation of the stirring structure (10), the operation of the position adjusting structure (6), the operation of the transmission structure (4), the opening and closing of the grain outlet (52) and the vibration of the vibration structure (8) through the controller (12); the controller (12) is controlled to collect measurement data of the weighing structure (7) and the sensor (9) to be measured, the measurement data of the weighing structure (7) is compared with the measurement data of the sensor (9) to be measured to obtain calibration data, and the calibration data is written into the sensor (9) to be measured; but also for the querying of historical data.
6. A method of performing test calibration using the impulse grain yield sensor test calibration device of claim 5, comprising the steps of:
setting test parameters;
adding a proper amount of grains into the lower grain tank (2);
controlling the stirring structure (10) to act;
opening a grain outlet (52) of the grain storage tank (5), and emptying grains in the grain storage tank (5);
closing a grain outlet (52) of the grain storage tank (5);
controlling the position adjusting structure (6) to enable the sensor (9) to be detected to be at a preset position;
controlling the vibration structure (8) to generate a vibration signal;
controlling the elevator (3) to lift grains in the lower grain tank (2) into the upper grain tank (1); when the grains loaded in the grain feeding box (1) reach the preset quantity, controlling the elevator (3) to stop working; the grains reaching the preset quantity at least can meet the one-time measurement requirement of the sensor to be measured;
collecting the weight value of grains in the lower grain tank (2) output by the weighing structure (7), and recording and storing the weight value;
controlling the transmission structure (4) to push grains in the upper grain tank (1) to a first outlet end (442) of the outlet conveying pipe joint (44);
collecting and storing grain flow data output by a sensor (9) to be detected in real time;
According to grain flow data output by the sensor (9) to be detected, calculating the weight of grains accumulated in the time of the preset collection times, and recording;
the grains in the grain storage tank (5) are emptied into the lower grain tank (2);
collecting the weight value of grains in the lower grain tank (2) output by the weighing structure (7), and recording and storing;
the actual weight of the grains accumulated in the time of the collection times is calculated by calculating the difference value of the output weight of the weighing structure (7) measured twice before and after the test, meanwhile, the difference value of the actual weight of the grains and the weight of the grains measured by the sensor (9) to be measured is calculated, and the difference value data of the actual weight of the grains and the weight of the grains measured by the sensor (9) to be measured is recorded and stored, wherein the difference value data is calibration data.
7. A method of performing test calibration using the impulse grain yield sensor test calibration device of claim 5, comprising the steps of:
setting test parameters;
adding a proper amount of grains into the lower grain tank (2);
controlling the stirring structure (10) to act;
opening a grain outlet (52) of the grain storage tank (5), and emptying grains in the grain storage tank (5);
controlling the position adjusting structure (6) to enable the sensor (9) to be detected to be at a preset position;
Controlling the vibration structure (8) to generate a vibration signal;
controlling the elevator (3) to lift grains in the lower grain tank (2) into the upper grain tank (1); when the grains loaded in the upper grain tank (1) reach the preset quantity, controlling the transmission structure (4) to push the grains in the upper grain tank (1) to a first outlet end (442) of the outlet conveying pipe joint (44); the grains reaching the preset quantity at least can meet the one-time measurement requirement of the sensor to be measured;
in the process, continuously collecting the weight value of grains in the lower grain tank (2) output by the weighing structure (7), and recording and storing the weight value; synchronously and continuously collecting and storing grain flow data output by a sensor (9) to be detected;
and analyzing the grain weight value and grain flow data output by the sensor (9) to be tested through the weighing structure (7) to generate test data and calibration data.
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