CN109548894B - Tea frying machine control method for detecting tea height by using laser probe - Google Patents
Tea frying machine control method for detecting tea height by using laser probe Download PDFInfo
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- CN109548894B CN109548894B CN201811331251.2A CN201811331251A CN109548894B CN 109548894 B CN109548894 B CN 109548894B CN 201811331251 A CN201811331251 A CN 201811331251A CN 109548894 B CN109548894 B CN 109548894B
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- A—HUMAN NECESSITIES
- A23—FOODS OR FOODSTUFFS; TREATMENT THEREOF, NOT COVERED BY OTHER CLASSES
- A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
- A23F3/00—Tea; Tea substitutes; Preparations thereof
- A23F3/06—Treating tea before extraction; Preparations produced thereby
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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
- G01B11/02—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness
- G01B11/06—Measuring arrangements characterised by the use of optical techniques for measuring length, width or thickness for measuring thickness ; e.g. of sheet material
- G01B11/0608—Height gauges
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L3/00—Measuring torque, work, mechanical power, or mechanical efficiency, in general
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Abstract
The invention discloses a tea frying machine control method for detecting tea height by using a laser probe, wherein the tea frying machine comprises a rack, a height detection device, a motor, a first coupler, a torque sensor, a second coupler, a transmission shaft, a frying pan, an electric heating wire, a frying plate, a speed sensor and a temperature sensor; the control of the tea frying machine on the motor and the electric heating wire depends on the specific numerical values obtained by the torque sensor, the problem that the tea frying quality is unstable due to the operation of workers by feel is solved, the quality of processed tea is improved, and the improvement significance of improving the tea processing quality is profound; the laser probe comprises a plurality of pairs of laser probes, and the height of tea leaves during stir-frying can be accurately controlled through data read by the laser probes with different heights, so that the accuracy of controlling the rotating speed of the motor is improved.
Description
Technical Field
The invention relates to the technical field of tea processing, in particular to a control method of a tea frying machine for detecting tea height by using a laser probe.
Background
Tea plant origin has a long history of six to seven thousand years since now, and the initial tea use has taken place in the wild collection in the original society. China is the origin of tea trees, and more than 4000 years ago, China begins to utilize tea leaves and is used as a good product for relieving summer heat by people. The tea can be used as additive material for food or medicine after deep processing. The processing process of the common tea leaves is mainly divided into three parts: primary processing of tea, refined processing of tea and deep processing of tea.
In the primary processing process of tea, stir-frying and forming are very important processes, which influence the quality of tea and the quality of tea forming effect to a great extent. During the stir-frying process, a series of physical and chemical changes occur, the tea is processed into a spherical shape during the stir-frying process, and the stir-frying forming is the cooperative work of tea forming, flavor forming, aroma forming and color forming.
In the existing tea leaf stir-frying forming process, tea leaf temperature and motor rotating speed control in a stir-frying pan are controlled by workers according to experience, so that key factors influencing tea leaf quality, such as tea leaf color, tea leaf crushing degree and fragrance, are inconsistent after tea leaf stir-frying is completed every time.
Disclosure of Invention
The invention aims to overcome the problem that when a tea frying machine is used for frying tea, the tea is stressed too much or too little due to the fact that the force of a frying plate acting on the tea cannot be controlled, and the quality of the tea is reduced.
The invention realizes the purpose through the following technical scheme: a tea frying machine control method for detecting tea height by using a laser probe is used for controlling a tea frying machine in a segmented manner, wherein the tea frying machine comprises a rack, a height detection device, a motor, a first coupler, a torque sensor, a second coupler, a transmission shaft, a frying pan, an electric heating wire, a frying plate, a speed sensor and a temperature sensor; the electric frying pan is characterized in that the motor and the frying pan are fixed on the rack, an output shaft of the motor is sequentially connected with a first coupler, a torque sensor and a second coupler, an output shaft of the second coupler is connected with a transmission shaft through a crank and rocker mechanism, the frying plate is fixed on the transmission shaft, the shape of the lower half part of the frying plate is a semicircle matched with the shape of the frying pan, the output shaft of the second coupler is driven to rotate by the first coupler and the torque sensor when the motor moves, and the frying plate is driven to swing in the frying pan in a reciprocating manner around the transmission shaft through the crank and rocker mechanism; the temperature sensor and the speed sensor are fixed at the bottom of the frying plate close to the frying pan, and the electric heating wires are uniformly distributed at the bottom of the frying pan; the height detection device comprises universal magnetic force gauge stands and laser probes, the universal magnetic force gauge stands are arranged on a rack beside a wok and are provided with a pair of universal magnetic force gauge stands, each universal magnetic force gauge stand is provided with three laser probes, the positions of the three laser probes on the two universal magnetic force gauge stands correspond to one another, the relative direction of the two laser probes is the soaring direction of tea leaves when the tea leaves are stir-fried by the stir-frying plate, and the three laser probes are sequentially arranged on the universal magnetic force gauge stands from top to bottom; the laser probe comprises a first probe, a second probe and a third probe from top to bottom in sequence;
the control method of the tea frying machine comprises the following steps:
1) the height of the three laser probes on the universal magnetic gauge stand is adjusted in advance;
2) adjusting the heating temperature of the heating wire to realize the temperature adjustment of the frying pan and ensure that the frying pan is in a proper temperature interval;
3) setting three preset values T in advance for torque sensor1 、T2And T3，T1For a constant moment value, T, when the tea sample is stir-fried to a height which can be detected by a third probe2For a constant moment value, T, when the tea sample is stir-fried to a height which can be detected by the second probe3The torque value of the torque sensor when the final processing is finished;
4) putting a tea sample into a frying pan, starting a motor, driving a frying plate to do reciprocating motion through a crank rocker mechanism, frying tea, and continuously acquiring a torque value of the motor by a torque sensor in the frying process; when the third probe at the bottommost part is shielded for obtaining a reading due to the fact that the tea sample is fried, the fact that the tea sample is fried is indicated, the motor is subjected to feedback adjustment through the torque sensor, and the rotating speed of the motor is adjusted to enable the torque value of the torque sensor to be kept at the preset T value1The weight of the tea sample is reduced due to the evaporation of water, the rotating speed of the motor is gradually increased, the height of the frying plate for turning the tea sample is gradually increased until the second probe in the middle is shielded for turning the tea sample to obtain a reading;
4) adjusting the preset value of the torque sensor to T2Adjusting the rotation speed of the motor to keep the torque value of the torque sensor at a preset value T2The weight of the tea sample is reduced due to further evaporation of water, the rotating speed of the motor is gradually increased, the height of the frying plate for turning the tea sample is gradually increased until the first probe in the middle is shielded for turning the tea sample to obtain a reading;
5) the first probe is used for carrying out feedback regulation on the motor to ensure thatThe stir-frying maximum height of the tea sample is always kept in a state that the first probe can detect, namely the rotating speed of the motor is adjusted to enable the stir-frying rising height of the tea sample to be stable, the torque value of the motor is detected by the torque sensor at the moment, and when the torque value reaches the preset T3When the tea leaf stir-frying process is finished, the heating wire and the motor are closed to finish the tea leaf stir-frying work.
Furthermore, the frying pan is fixed on the rack at an oblique angle of 45 degrees.
Furthermore, the edge of the lower half part of the semicircular shape of the frying plate is attached to the inner wall of the frying pan.
Furthermore, the frying plate is fixed on the transmission shaft through bolts, and the transmission shaft is installed on the rack through bearings at two ends.
Furthermore, universal magnetic gauge stand still is provided with a plurality of laser probe, and all laser probe all are from last equidistant distribution down to obtain tealeaves and turn over the value range of stir-fry torque sensor when different heights.
The invention has the beneficial effects that:
1. the invention overcomes the problem that when tea processing equipment is used for frying tea, the force of the tea leaves is too large or too small due to the fact that the force of the frying plate acting on the tea leaves cannot be controlled, and the quality of the tea leaves is reduced.
2. The laser probe of the invention is composed of a plurality of pairs of laser probes, and the height of the tea leaves during each stir-frying can be accurately controlled through the data read by the laser probes with different heights, so that the accuracy of controlling the rotating speed of the motor is increased
3. The number of the laser probes can be configured according to actual requirements so as to adapt to processing of different types of tea, the tea frying machine can have a plurality of height intervals, and the height of the laser probes is controllable, so that the applicability of the tea frying machine and the method is greatly improved.
4. The processing process of the tea frying machine is fully automatic, whether the processing is finished or not is judged vertically through the measurement of the torque sensor, the labor is saved, and the frying cost is reduced.
5. The tea frying machine adopts the crank and rocker mechanism as the driving connecting device, and because of the inherent characteristics of the crank and rocker mechanism, the included angle of the polar position exists, namely the rocker has the characteristic of quick return motion, the contact stroke of tea leaves with the frying plate and the pot wall every time is increased, the tea frying speed of the frying plate is accelerated, and the tea frying effect is improved.
6. The control of the tea frying machine on the motor and the electric heating wire depends on the specific numerical value obtained by the torque sensor, the problem of unstable tea frying quality caused by operation by a worker according to feeling is solved, and the quality of processed tea is improved.
7. According to the tea frying machine, the weight change of tea leaves in the frying pan is calculated through the numerical value measured by the torque sensor, so that the occupation ratio of the tea leaves in the frying pan is calculated, the working conditions of the electric heating wire and the motor are controlled and adjusted, closed-loop control is formed, the tea leaf frying process is controlled more accurately, and the quality of processed tea leaves is improved.
Drawings
Fig. 1 is a schematic structural view of the tea frying machine.
In the figure, 1-motor, 2-first coupling, 3-torque sensor, 4-second coupling, 5-output shaft, 6-frying pan, 7-electric heating wire, 8-frying plate, 9-speed sensor, 10-temperature sensor, 11-transmission shaft, 12-rotating disk, 13-transmission rod, 14-fixed seat, 15-swinging rod, 16-sliding block, 17-sliding groove, 18-machine frame, 19-universal magnetic meter seat and 20-laser probe.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1, a tea frying machine control method for detecting tea height by using a laser probe is used for controlling a tea frying machine in a segmented manner, the tea frying machine comprises a rack 18, a height detection device, a motor 1, a first coupler 2, a torque sensor 3, a second coupler 4, a transmission shaft 11, a frying pan 6, an electric heating wire 7, a frying plate 8, a speed sensor 9 and a temperature sensor 10, wherein the motor 1 and the frying pan 6 are both fixed on the rack 18, an output shaft 5 of the motor 1 is sequentially connected with the first coupler 2, the torque sensor 3 and the second coupler 4, the output shaft 5 of the second coupler 4 is connected with the transmission shaft 11 through a crank and rocker mechanism, the frying plate 8 is fixed on the transmission shaft 11, the lower half part of the frying plate 8 is in a semicircular shape matched with the shape of the frying pan 6, and the output shaft 5 of the second coupler 4 is driven to rotate by the first coupler 2 and the torque sensor 3 when the motor 1 moves, further driving the frying plate 8 to swing back and forth in the frying pan 6 around the transmission shaft 11 through a crank rocker mechanism; the temperature sensor 10 and the speed sensor 9 are fixed at the bottom of the frying plate 8 close to the frying pan 6, and the electric heating wires 7 are uniformly distributed at the bottom of the frying pan 6; the height detection device comprises universal magnetic force gauge stands 19 and laser probes 20, the universal magnetic force gauge stands 19 are arranged on a rack 18 beside a wok 6 and are provided with a pair, each universal magnetic force gauge stand 19 is provided with three laser probes 20, the three laser probes 20 on the two universal magnetic force gauge stands 19 are in one-to-one correspondence, the relative direction of the two relative laser probes 20 is the soaring direction of tea leaves when the tea leaves are stir-fried by the frying plate 8, and the three laser probes 20 are sequentially arranged on the universal magnetic force gauge stands 19 from top to bottom; the laser probe comprises a first probe, a second probe and a third probe from top to bottom in sequence.
The control method of the tea frying machine comprises the following steps:
1) the height of the three laser probes on the universal magnetic gauge stand is adjusted in advance;
2) adjusting the heating temperature of the heating wire to realize the temperature adjustment of the frying pan and ensure that the frying pan is in a proper temperature interval;
3) setting three preset values T in advance for torque sensor1 、T2And T3，T1For a constant moment value, T, when the tea sample is stir-fried to a height which can be detected by a third probe2For a constant moment value, T, when the tea sample is stir-fried to a height which can be detected by the second probe3The torque value of the torque sensor when the final processing is finished;
4) putting the tea sample into a frying pan, starting a motor, and driving a frying plate through a crank rocker mechanismMaking reciprocating motion, stir-frying the tea leaves, and continuously acquiring a torque value of a motor by a torque sensor in the stir-frying process; when the third probe at the bottommost part is shielded for obtaining a reading due to the fact that the tea sample is fried, the fact that the tea sample is fried is indicated, the motor is subjected to feedback adjustment through the torque sensor, and the rotating speed of the motor is adjusted to enable the torque value of the torque sensor to be kept at the preset T value1The weight of the tea sample is reduced due to the evaporation of water, the rotating speed of the motor is gradually increased, the height of the frying plate for turning the tea sample is gradually increased until the second probe in the middle is shielded for turning the tea sample to obtain a reading;
4) adjusting the preset value of the torque sensor to T2Adjusting the rotation speed of the motor to keep the torque value of the torque sensor at a preset value T2The weight of the tea sample is reduced due to further evaporation of water, the rotating speed of the motor is gradually increased, the height of the frying plate for turning the tea sample is gradually increased until the first probe in the middle is shielded for turning the tea sample to obtain a reading;
5) the motor is subjected to feedback adjustment by using the first probe, so that the stirring and frying maximum height of the tea sample is always kept in a condition which can be detected by the first probe, namely the rotating speed of the motor is adjusted to stabilize the stirring and frying rising height of the tea sample, the torque value of the motor is detected by using the torque sensor at the moment, and when the torque value reaches the preset T value3When the tea leaf stir-frying process is finished, the heating wire and the motor are closed to finish the tea leaf stir-frying work.
The frying pan 6 can be horizontally fixed on the rack 18, and can also be fixed on the rack 18 at an oblique angle of 45 degrees, when the frying pan 6 is fixed on the rack 18 at an oblique angle of 45 degrees, tea leaves are placed at the high side of the frying pan, and the frying plate 8 can swing within a small range to drive the tea leaves to move in a large range.
Fry the half round edge of semicircular of board 8 and the inner wall laminating of frying pan 6, tealeaves can not have the gap because of frying the inner wall of 8 bottoms of board and frying pan 6 and fall into the other side of frying pan 6 when frying board 8 and moving.
The frying plate 8 is fixed on a transmission shaft 11 through bolts, and the transmission shaft 11 is arranged on a rack 18 through bearings at two ends.
The crank rocker mechanism comprises a rotating disc 12, a transmission rod 13, a fixed seat 14, a swinging rod 15 and a sliding block 16, wherein the rotating disc 12 is fixed on an output shaft of the second coupling, the disc edge of the rotating disc 12 is hinged in the middle of the transmission rod 13, the lower end of the transmission rod 13 is hinged on the fixed seat 14, the sliding block 16 is sleeved at the upper end of the transmission rod 13, and the swing rod 15 is provided with a sliding groove 17 for the sliding of the sliding block 16, the sliding block 16 is sleeved in the sliding groove 17, the upper end of the swing rod 15 is fixedly connected with the transmission shaft, the output shaft of the second coupler drives the rotating disc 12 to rotate when rotating, thereby driving the transmission rod 13 to swing left and right around the fixed seat 14 at the lower end, the sliding block 16 arranged at the upper end of the transmission rod 13 swings left and right around the fixed seat 14 at the lower end of the transmission rod 13, and then the transmission rod 13 is driven to swing left and right around the transmission shaft, so that the frying plate swings left and right in the frying pan to stir and fry the tea in the frying pan.
The above embodiments are only preferred embodiments of the present invention, and are not intended to limit the technical solutions of the present invention, so long as the technical solutions can be realized on the basis of the above embodiments without creative efforts, which should be considered to fall within the protection scope of the patent of the present invention.
Claims (4)
1. A tea frying machine control method for detecting tea height by using a laser probe is used for controlling a tea frying machine in a segmented manner, and is characterized in that: fry tea machine, including frame (18), height-detecting device, motor (1), first shaft coupling (2), torque sensor (3), second shaft coupling (4), transmission shaft (11), frying pan (6), heating wire (7), fry board (8), speedtransmitter (9) and temperature sensor (10), motor (1) and frying pan (6) are all fixed in frame (18), the output shaft of motor (1) connects gradually first shaft coupling (2), torque sensor (3) and second shaft coupling (4), and output shaft (5) of second shaft coupling (4) pass through crank and rocker mechanism and connect transmission shaft (11), fry board (8) and fix on transmission shaft (11), the shape of frying board (8) for with frying pan (6) shape match semi-circular, through first shaft coupling (2) during motor (1) motion, The torque sensor (3) drives an output shaft (5) of the second coupling (4) to rotate, and then a crank rocker mechanism drives a frying plate (8) to swing in a frying pan (6) in a reciprocating manner around a transmission shaft (11); the temperature sensor (10) and the speed sensor (9) are fixed at the position, close to the frying pan (6), of the bottom of the frying plate (8), and the electric heating wires (7) are uniformly distributed at the bottom of the frying pan (6); the height detection device comprises universal magnetic meter seats (19) and laser probes (20), the universal magnetic meter seats (19) are arranged on a rack (18) beside a frying pan (6) and are provided with a pair, each universal magnetic meter seat (19) is provided with three laser probes (20), the three laser probes (20) on the two universal magnetic meter seats (19) are in one-to-one correspondence, the relative direction of the two relative laser probes (20) is the soaring direction of tea leaves when the tea leaves are stir-fried by the frying plate (8), and the three laser probes (20) are sequentially arranged on the universal magnetic meter seats (19) from top to bottom; the laser probe comprises a first probe, a second probe and a third probe from top to bottom in sequence;
the control method of the tea frying machine comprises the following steps:
1) the height of the three laser probes on the universal magnetic gauge stand is adjusted in advance;
2) adjusting the heating temperature of the heating wire to realize the temperature adjustment of the frying pan and ensure that the frying pan is in a proper temperature interval;
3) setting three preset values T in advance for torque sensor1 、T2And T3，T1For a constant moment value, T, when the tea sample is stir-fried to a height which can be detected by a third probe2For a constant moment value, T, when the tea sample is stir-fried to a height which can be detected by the second probe3The torque value of the torque sensor when the final processing is finished;
4) putting a tea sample into a frying pan, starting a motor, driving a frying plate to do reciprocating motion through a crank rocker mechanism, frying tea, and continuously acquiring a torque value of the motor by a torque sensor in the frying process; when the third probe at the bottommost part is shielded for obtaining the reading due to the fact that the tea sample is stir-fried, the fact that the tea sample is stir-fried starts is indicated, the torque sensor is used for carrying out feedback adjustment on the motor at the moment, and the motor is adjusted to rotateThe torque value of the torque sensor is kept at the preset T1The weight of the tea sample is reduced due to the evaporation of water, the rotating speed of the motor is gradually increased, the height of the frying plate for turning the tea sample is gradually increased until the second probe in the middle is shielded for turning the tea sample to obtain a reading;
4) adjusting the preset value of the torque sensor to T2Adjusting the rotation speed of the motor to keep the torque value of the torque sensor at a preset value T2The weight of the tea sample is reduced due to further evaporation of water, the rotating speed of the motor is gradually increased, the height of the frying plate for turning the tea sample is gradually increased until the first probe in the middle is shielded for turning the tea sample to obtain a reading;
5) the motor is subjected to feedback adjustment by using the first probe, so that the stirring and frying maximum height of the tea sample is always kept in a condition which can be detected by the first probe, namely the rotating speed of the motor is adjusted to stabilize the stirring and frying rising height of the tea sample, the torque value of the motor is detected by using the torque sensor at the moment, and when the torque value reaches the preset T value3When the tea leaf stir-frying process is finished, the heating wire and the motor are closed to finish the tea leaf stir-frying work.
2. The tea frying machine control method for detecting the tea height by using the laser probe as claimed in claim 1, wherein: the frying pan (6) is fixed on the frame (18) at an oblique angle of 45 degrees.
3. The tea frying machine control method for detecting the tea height by using the laser probe as claimed in claim 1, wherein: the edge of the lower half part of the semicircle of the frying plate (8) is attached to the inner wall of the frying pan (6).
4. The tea frying machine control method for detecting the tea height by using the laser probe as claimed in claim 1, wherein: the frying plate (8) is fixed on the transmission shaft (11) through bolts, and the transmission shaft (11) is installed on the rack (18) through bearings at two ends.
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101889615A (en) * | 2010-06-23 | 2010-11-24 | 顾成东 | Tea frying machine |
| CN105076508A (en) * | 2014-05-04 | 2015-11-25 | 新昌县群星实业有限公司 | Subsectional stir-frying processing method of Longjing tea |
| CN204888577U (en) * | 2015-06-08 | 2015-12-23 | 浙江省新昌县澄潭茶厂 | Stir -fry tea machine of steerable stir -fry tea speed and temperature |
| CN206213168U (en) * | 2016-08-28 | 2017-06-06 | 新昌县群星实业有限公司 | A kind of temperature control tea frying machine |
| CN108432903A (en) * | 2018-06-15 | 2018-08-24 | 广东工业大学 | The terminal angle method of adjustment and tea frying robot of tea frying robot stir-frying tealeaves |
-
2018
- 2018-11-09 CN CN201811331251.2A patent/CN109548894B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101889615A (en) * | 2010-06-23 | 2010-11-24 | 顾成东 | Tea frying machine |
| CN105076508A (en) * | 2014-05-04 | 2015-11-25 | 新昌县群星实业有限公司 | Subsectional stir-frying processing method of Longjing tea |
| CN204888577U (en) * | 2015-06-08 | 2015-12-23 | 浙江省新昌县澄潭茶厂 | Stir -fry tea machine of steerable stir -fry tea speed and temperature |
| CN206213168U (en) * | 2016-08-28 | 2017-06-06 | 新昌县群星实业有限公司 | A kind of temperature control tea frying machine |
| CN108432903A (en) * | 2018-06-15 | 2018-08-24 | 广东工业大学 | The terminal angle method of adjustment and tea frying robot of tea frying robot stir-frying tealeaves |
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