CN109613894B - Tea processing equipment control method based on infrared image - Google Patents
Tea processing equipment control method based on infrared image Download PDFInfo
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- CN109613894B CN109613894B CN201811332028.XA CN201811332028A CN109613894B CN 109613894 B CN109613894 B CN 109613894B CN 201811332028 A CN201811332028 A CN 201811332028A CN 109613894 B CN109613894 B CN 109613894B
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- G—PHYSICS
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- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/41865—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by job scheduling, process planning, material flow
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- A—HUMAN NECESSITIES
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- A23F—COFFEE; TEA; THEIR SUBSTITUTES; MANUFACTURE, PREPARATION, OR INFUSION THEREOF
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- G01N2021/8466—Investigation of vegetal material, e.g. leaves, plants, fruits
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
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Abstract
The invention discloses a control method of tea processing equipment based on infrared images, wherein the tea processing equipment comprises a rack, a 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 method of the tea processing equipment sets three set values H of the tea stir-frying height1、H2And H3And torque value M of corresponding torque sensor1、M2And M3To realize the judgment of tea frying in each stage; the control of the tea frying machine on the motor depends on the specific numerical value 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 temperature of controlling different motor speed and heating wire through different stages makes tealeaves when being fried, does not form the mince because of motor speed is too fast, also can not cause the water loss volume imbalance because of the height of temperature.
Description
Technical Field
The invention relates to the technical field of tea processing, in particular to a control method of tea processing equipment based on infrared images.
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 tea processing equipment 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 processing equipment control method based on infrared images is used for controlling tea processing equipment in a segmented mode, and the tea processing equipment comprises a rack, a 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 lower half part of the frying plate is semicircular in shape, the lower half part of the frying plate is matched with the shape of the frying pan, the output shaft of the second coupler is driven to rotate through 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 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 detection device comprises a universal magnetic meter seat and an infrared camera, the universal magnetic meter seat is arranged on the rack beside the frying pan, the infrared camera is arranged on the universal magnetic meter seat, and the infrared camera is over against the tea leaf flying direction when the tea leaf is stir-fried by the frying plate;
the control method of the tea processing equipment comprises the following steps:
1) installing an infrared camera on a universal magnetic meter seat, installing the universal magnetic meter seat on a rack beside a frying pan, and adjusting the direction of the infrared camera on the universal magnetic meter seat to ensure that the infrared camera is opposite to the tea leaf soaring direction in the frying pan;
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) putting sample tea leaves into a frying pan, starting a motor, driving a frying plate to do reciprocating motion through a crank rocker mechanism, frying the sample tea leaves, and continuously acquiring a torque value of the motor by a torque sensor in the frying process; starting an infrared camera when a motor is started, shooting an infrared picture at the highest emptying height when the sample tea leaves are stirred and emptied each time by the infrared camera, and acquiring a torque value acquired by a torque sensor at the highest emptying height of the sample tea leaves and the reading of the infrared camera; until the whole sample tea is processed, acquiring a torque value acquired by a torque sensor when the height of the sample tea is the highest during each time of the sample tea is emptied, the height of the tea stir-frying highest point in a picture shot by an infrared camera and the temperature of the tea, and acquiring a set value of the torque and a set value of the picture shot by the infrared camera after the processing is finished;
4) two set values H for setting the tea leaf stir-frying height1And H2，H2The height of the sample tea leaf is the highest point height of stir-frying of the sample tea leaf in a picture shot by an infrared camera when the sample tea leaf is processed, H1The height of the sample tea leaf at the beginning of processing is obtained; sample tea leaf is stir-fried to H1The torque value of the corresponding torque sensor at the height is M1Setting tea temperature has three set values T1、T2And T3，T3The temperature of the tea leaves at the completion of processing;
5) when tea processing is carried out, tea to be processed is put into a frying pan, the heating wire is electrified to carry out constant-temperature heating, the motor is started, the frying plate is driven to reciprocate through the crank rocker mechanism, the tea to be processed is stir-fried, and the electricity is adjusted during stir-fryingThe rotating speed of the machine ensures that the stirring and frying flying height is kept unchanged, namely, the picture of the tea to be processed is shot by the infrared camera and the stirring and frying flying height of the tea is judged, the stirring and frying flying height of the tea in the picture shot by the infrared camera carries out feedback adjustment on the motor, the torque value output by the motor is monitored in real time by the torque sensor at the moment, and as the water seal in the tea to be processed which is stirred and fried in the stirring and frying process is gradually heated and evaporated, the torque value measured by the torque sensor is gradually changed until the measured torque value reaches a set value M1；
6) The rotating speed of the motor is adjusted to ensure that the torque value measured by the torque sensor is kept at a set value M1Shooting a picture of the tea to be processed by using the infrared camera and adjusting the temperature of the electric heating wire according to the feedback of the temperature of the tea in the picture until the average temperature of the tea to be processed is stabilized at T1；
7) The temperature of the electric heating wire is raised to T2, the motor is controlled to rotate at a constant rotating speed, the tea leaves further evaporate, the weight is reduced, the stir-frying altitude is increased until the stir-frying altitude reaches a set value H2；
8) The rotating speed of the motor is changed to maintain the tea leaf stirring and frying height at a set value H2Keeping the temperature constant, heating the tea leaves by the electric heating wire at constant temperature, gradually changing the tea leaf temperature, and when the tea leaf temperature reaches a set value T3And when the machining process is finished, the motor and the heating wire are closed.
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.
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 infrared camera is composed of the infrared camera, the height of tea leaves during each stir-frying and the temperature of the tea leaves can be accurately mastered and controlled through pictures shot by the infrared camera, and the accuracy of controlling the rotating speed of the motor and the accuracy of the temperature of the electric heating wire are improved.
3. The processing process of the tea processing equipment 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.
4. The tea processing equipment 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 with the frying plate and the pot wall is increased every time, the tea frying speed of the frying plate is accelerated, and the tea frying effect is improved.
5. The control of the motor and the electric heating wire by the tea processing equipment of the invention depends on the specific numerical values obtained by the torque sensor, thereby avoiding the problem of unstable tea frying quality caused by the operation of workers by feel and improving the quality of processed tea.
6. According to the tea processing equipment, the weight change of tea in the wok is calculated through the numerical value measured by the torque sensor, so that the occupation ratio of the tea in the wok is calculated, the working conditions of the electric heating wire and the motor are controlled and adjusted, closed-loop control is formed, the tea frying process is controlled more accurately, and the quality of the processed tea is improved.
Drawings
Fig. 1 is a schematic structural view of the tea processing apparatus of the present invention.
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-frame, 19-universal magnetic meter seat and 20-infrared camera.
Detailed Description
The invention will be further described with reference to the accompanying drawings in which:
as shown in fig. 1, a control method of tea processing equipment based on infrared images is used for controlling the tea processing equipment in a segmented manner, the tea processing equipment comprises a rack 18, a detection device, a motor 1, a first coupler 2, a torque sensor 3, a second coupler 4, a transmission shaft 11, a wok 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 wok 6 are both fixed on the rack 18, an output shaft of the motor 1 is sequentially connected with the first coupler 2, the torque sensor 3 and the second coupler 4, an 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 semicircular in shape, the lower half part of the frying plate 8 is matched with the wok 6 in shape, the motor 1 drives the output shaft 5 of the second coupler 4 to rotate through the first coupler 2 and the torque sensor, 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 detection device comprises a universal magnetic meter seat 19 and an infrared camera 20, wherein the universal magnetic meter seat (19) is installed on a rack 18 beside the frying pan 6, the infrared camera 20 is installed on the universal magnetic meter seat (19), and the infrared camera 20 is just opposite to the soaring direction of tea leaves when the tea leaves are stir-fried by the frying plate.
The control method of the tea processing equipment comprises the following steps:
1) installing an infrared camera on a universal magnetic meter seat, installing the universal magnetic meter seat on a rack beside a frying pan, and adjusting the direction of the infrared camera on the universal magnetic meter seat to ensure that the infrared camera is opposite to the tea leaf soaring direction in the frying pan;
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) putting sample tea leaves into a frying pan, starting a motor, driving a frying plate to do reciprocating motion through a crank rocker mechanism, frying the sample tea leaves, and continuously acquiring a torque value of the motor by a torque sensor in the frying process; starting an infrared camera when a motor is started, shooting an infrared picture at the highest emptying height when the sample tea leaves are stirred and emptied each time by the infrared camera, and acquiring a torque value acquired by a torque sensor at the highest emptying height of the sample tea leaves and the reading of the infrared camera; until the whole sample tea is processed, acquiring a torque value acquired by a torque sensor when the height of the sample tea is the highest during each time of the sample tea is emptied, the height of the tea stir-frying highest point in a picture shot by an infrared camera and the temperature of the tea, and acquiring a set value of the torque and a set value of the picture shot by the infrared camera after the processing is finished;
4) two set values H for setting the tea leaf stir-frying height1And H2，H2The height of the sample tea leaf is the highest point height of stir-frying of the sample tea leaf in a picture shot by an infrared camera when the sample tea leaf is processed, H1The height of the sample tea leaf at the beginning of processing is obtained; sample tea leaf is stir-fried to H1The torque value of the corresponding torque sensor at the height is M1Setting tea temperature has three set values T1、T2And T3，T3The temperature of the tea leaves at the completion of processing;
5) when tea processing is carried out, tea to be processed is placed into a wok, the heating wire is electrified to carry out constant-temperature heating, the motor is started, the frying plate is driven by the crank rocker mechanism to reciprocate, the tea to be processed is fried, the rotating speed of the motor is adjusted to ensure that the frying flying height is kept unchanged during frying, namely, a picture of the tea to be processed is shot by the infrared camera and the frying flying height of the tea is judged, the motor is subjected to feedback adjustment by the frying flying height of the tea in the picture shot by the infrared camera, the torque value output by the motor is monitored by the torque sensor in real time, the water seal in the tea to be processed which is fried during frying is gradually heated and evaporated, the torque value measured by the torque sensor is gradually changed until the measured torque value reaches a set value M1；
6) The rotating speed of the motor is adjusted to ensure that the torque value measured by the torque sensor is kept at a set value M1Shooting a picture of the tea to be processed by using the infrared camera and adjusting the temperature of the electric heating wire according to the feedback of the temperature of the tea in the picture until the average temperature of the tea to be processed is stabilized at T1；
7) The temperature of the electric heating wire is raised to T2, the motor is controlled to rotate at a constant rotating speed, the tea leaves further evaporate, the weight is reduced, the stir-frying altitude is increased until the stir-frying altitude reaches a set value H2；
8) The rotating speed of the motor is changed to maintain the tea leaf stirring and frying height at a set value H2Keeping the temperature constant, heating the tea leaves by the electric heating wire at constant temperature, gradually changing the tea leaf temperature, and when the tea leaf temperature reaches a set value T3And when the machining process is finished, the motor and the heating wire are closed.
The tea leaf stir-frying height and the tea leaf temperature in the step 4) can be set to a plurality of set values according to needs, and the set values of the tea leaf stir-frying height and the torque value of the torque sensor at each stage are ensured to reach the set values during processing according to the number of the set values and the torque values of the torque sensors and the heating values of the electric heating wires, so that the processing at a certain stage is judged to be completed.
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 processing equipment control method based on infrared images is used for carrying out sectional control on tea processing equipment and is characterized in that: tea processing equipment, including frame (18), detection 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), and the shape of frying board (8) is semi-circular, and the lower half of frying board (8) cooperatees with frying pan (6) shape, 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 detection device comprises a universal magnetic meter seat (19) and an infrared camera (20), the universal magnetic meter seat (19) is installed on a rack (18) beside the frying pan (6), the infrared camera (20) is installed on the universal magnetic meter seat (19), and the infrared camera (20) is right opposite to the rising direction of tea leaves when the tea leaves are stir-fried by the frying plate;
the control method of the tea processing equipment comprises the following steps:
1) installing an infrared camera on a universal magnetic meter seat, installing the universal magnetic meter seat on a rack beside a frying pan, and adjusting the direction of the infrared camera on the universal magnetic meter seat to ensure that the infrared camera is opposite to the tea leaf soaring direction in the frying pan;
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) putting sample tea leaves into a frying pan, starting a motor, driving a frying plate to do reciprocating motion through a crank rocker mechanism, frying the sample tea leaves, and continuously acquiring a torque value of the motor by a torque sensor in the frying process; starting an infrared camera when a motor is started, shooting an infrared picture at the highest emptying height when the sample tea leaves are stirred and emptied each time by the infrared camera, and acquiring a torque value acquired by a torque sensor at the highest emptying height of the sample tea leaves and the reading of the infrared camera; until the whole sample tea is processed, acquiring a torque value acquired by a torque sensor when the height of the sample tea is the highest during each time of the sample tea is emptied, the height of the tea stir-frying highest point in a picture shot by an infrared camera and the temperature of the tea, and acquiring a set value of the torque and a set value of the picture shot by the infrared camera after the processing is finished;
4) two set values H for setting the tea leaf stir-frying height1And H2，H2The height of the sample tea leaf is the highest point height of stir-frying of the sample tea leaf in a picture shot by an infrared camera when the sample tea leaf is processed, H1The height of the sample tea leaf at the beginning of processing is obtained; sample tea leaf is stir-fried to H1Corresponding to heightThe torque value of the torque sensor is M1Setting tea temperature has three set values T1、T2And T3，T3The temperature of the tea leaves at the completion of processing;
5) when tea processing is carried out, tea to be processed is placed into a wok, the heating wire is electrified to carry out constant-temperature heating, the motor is started, the frying plate is driven by the crank rocker mechanism to reciprocate, the tea to be processed is fried, the rotating speed of the motor is adjusted to ensure that the frying flying height is kept unchanged during frying, namely, a picture of the tea to be processed is shot by the infrared camera and the frying flying height of the tea is judged, the motor is subjected to feedback adjustment by the frying flying height of the tea in the picture shot by the infrared camera, the torque value output by the motor is monitored by the torque sensor in real time, the water seal in the tea to be processed which is fried during frying is gradually heated and evaporated, the torque value measured by the torque sensor is gradually changed until the measured torque value reaches a set value M1；
6) The rotating speed of the motor is adjusted to ensure that the torque value measured by the torque sensor is kept at a set value M1Shooting a picture of the tea to be processed by using the infrared camera and adjusting the temperature of the electric heating wire according to the feedback of the temperature of the tea in the picture until the average temperature of the tea to be processed is stabilized at T1；
7) The temperature of the electric heating wire is raised to T2, the motor is controlled to rotate at a constant rotating speed, the tea leaves further evaporate, the weight is reduced, the stir-frying altitude is increased until the stir-frying altitude reaches a set value H2；
8) The rotating speed of the motor is changed to maintain the tea leaf stirring and frying height at a set value H2Keeping the temperature constant, heating the tea leaves by the electric heating wire at constant temperature, gradually changing the tea leaf temperature, and when the tea leaf temperature reaches a set value T3And when the machining process is finished, the motor and the heating wire are closed.
2. The method of claim 1, wherein the method comprises the following steps: the frying pan (6) is fixed on the frame (18) at an oblique angle of 45 degrees.
3. The method of claim 1, wherein the method comprises the following steps: 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 method of claim 1, wherein the method comprises the following steps: 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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| CN110244605B (en) * | 2019-05-29 | 2021-04-02 | 安徽华润金蟾药业股份有限公司 | Online quality control equipment and method for stir-frying traditional Chinese medicine decoction pieces |
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