CN112730541A - High-precision low-power-consumption tobacco leaf moisture content monitor - Google Patents
High-precision low-power-consumption tobacco leaf moisture content monitor Download PDFInfo
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- CN112730541A CN112730541A CN202110025151.2A CN202110025151A CN112730541A CN 112730541 A CN112730541 A CN 112730541A CN 202110025151 A CN202110025151 A CN 202110025151A CN 112730541 A CN112730541 A CN 112730541A
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- G01N27/22—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance
- G01N27/223—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating impedance by investigating capacitance for determining moisture content, e.g. humidity
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Abstract
The invention discloses a high-precision low-power-consumption tobacco leaf moisture content monitor and a working process thereof. The tobacco leaf moisture content monitor is reasonable in design, adopts a self-made cylindrical capacitance sensor, is added with a high-precision capacitance measuring chip, uses a single chip as a control center, utilizes a data transmission module of a low-power consumption wireless transmission technology, ensures good tobacco leaf moisture content measuring precision, is safe and stable in operation, is low in equipment power consumption, and can be used for long endurance in an actual use environment.
Description
Technical Field
The invention relates to a tobacco leaf moisture content monitor, in particular to a high-precision low-power-consumption tobacco leaf moisture content monitor and a working process thereof, and belongs to the technical field of tobacco leaf monitoring application.
Background
Tobacco leaves are the main raw material in the cigarette industry, and the quality of the tobacco leaves directly influences the economic benefit of enterprises. The tobacco leaves need to be naturally alcoholized through long-time (1-3 years) storage, so that a series of changes are generated in physical properties, chemical components and the like, and the quality requirements suitable for producing cigarettes are met. As the tobacco leaves have strong hygroscopicity, adverse factors such as insect pests and mildew mainly exist in the storage process, the moisture content in the tobacco leaves influences the physical characteristics such as elasticity, toughness, filling property and combustibility of the tobacco leaves, and finally influences the fragrance, taste and appearance quality of the tobacco leaves, so that the tobacco leaves are very necessary to monitor the moisture of the tobacco leaves, the control of the moisture content of the tobacco leaves in the storage process is particularly important, and the tobacco leaves directly influence the natural alcoholization effect of the tobacco leaves.
In summary, the moisture content of the tobacco leaves not only affects the quality of the processed tobacco leaves, but also affects the loss of the tobacco leaf raw materials, so that the moisture content of the tobacco leaves is strictly controlled during the classified purchase, the redrying processing, the storage and the transportation in order to ensure the safety of the tobacco leaves. Tobacco leaves are generally stored in a warehouse in a tobacco bale stacking mode, unpacking detection is inconvenient, a sampling process is complex by means of an oven method and the like, a measuring period is long, large-area measurement cannot be carried out regularly for a long time, traditional moisture measuring methods (such as a neutron method, a microwave method, an infrared method, a nuclear magnetic resonance method and the like) are large in size, high in cost, inconvenient to operate and incapable of large-area deployment monitoring, and at present, small-sized capacitance tobacco leaf moisture monitoring instruments meeting measuring precision requirements are almost not available at home and abroad, so that monitoring of tobacco leaf moisture in the tobacco leaf warehouse mainly depends on manual experience judgment and regular sampling in a small amount, and the change condition of the tobacco leaves cannot be. Therefore, a high-precision low-power consumption tobacco leaf moisture content monitor is provided for solving the problems.
Disclosure of Invention
The invention aims to solve the problems and provide a high-precision low-power-consumption tobacco leaf moisture content monitor.
The invention realizes the purpose through the following technical scheme, and the high-precision low-power-consumption tobacco leaf moisture content monitor comprises a host shell (1), a detection assembly and a main control assembly, wherein the back surface of the host shell (1) is fixedly connected with one end of an extension pipe (8) through a flange plate (7), and the port at the other end of the extension pipe (8) is internally provided with a large-diameter end of a T-shaped circular base (10) of a capacitance sensor;
the detection assembly comprises capacitance sensor inner and outer cylinder probes (11, 12), a capacitance sensor T-shaped round base (10), a high-precision capacitance measurement chip (901), a temperature and humidity sensor (902) and a sensor circuit board (9), the sensor circuit board is arranged in a large-diameter end concave surface structure of a T-shaped circular base (10) of the capacitance sensor, the capacitance sensor inner cylinder probe (11) and the capacitance sensor outer cylinder probe (12) are electrically controlled and connected with the high-precision capacitance measuring chip (901) through corresponding circuits on the sensor circuit board (9), the temperature and humidity sensor (902) is electrically arranged on the sensor circuit board at the corresponding circuit electric junction, the capacitance sensor inner cylinder probe (11) is positioned in a small-diameter cylinder of a capacitance sensor T-shaped circular base (10), the capacitance sensor outer cylinder probe (12) is positioned outside the small-diameter cylindrical barrel of the capacitance sensor T-shaped circular base (10);
the main control assembly comprises a main control circuit board, a clock, a single chip microcomputer and a communication module, wherein the clock is electrically connected with corresponding electric joints on one side of the main control circuit board, the single chip microcomputer is electrically connected with corresponding electric joints in the middle of the main control circuit board, the communication module is electrically connected with corresponding electric joints in the middle of the main control circuit board, and the main control circuit board is electrically connected with the sensor circuit board through a lead.
Preferably, the main control circuit board is installed in the host shell (1), a display is installed on the front end face of the host shell (1), and the display is electrically connected with the corresponding electric connection part of the main control circuit board through a flat cable.
Preferably, a battery pressing plate is arranged in the host machine shell (1), and a battery is fixed between the battery pressing plate and the corresponding side wall in the host machine shell (1).
Preferably, a capacitance sensor inner cylinder probe (11) is tightly installed inside a small-diameter column of the capacitance sensor T-shaped circular base (10), a plurality of pore structures are arranged on the annular surface of the capacitance sensor inner cylinder probe (11), a capacitance sensor outer cylinder probe (12) is tightly installed outside the small-diameter column of the capacitance sensor T-shaped circular base (10), and a plurality of pore structures are arranged on the annular surface of the capacitance sensor outer cylinder probe (12).
Preferably, corresponding circuits on the sensor circuit board (9) are respectively in electric control connection with corresponding leads of the capacitance sensor inner cylinder probe (11) and the capacitance sensor outer cylinder probe (12), and are in electric control connection with the temperature and humidity sensor (902).
Preferably, the communication module is electrically connected with the antenna (3) through corresponding wires and corresponding circuits on the sensor circuit board (9), and the antenna (3) is installed at a corresponding position in the host casing (1).
Preferably, the working process of the high-precision low-power consumption tobacco leaf moisture content monitor comprises system initialization, peripheral initialization, network initialization, data measurement and data transmission, and specifically comprises the following steps:
(1) initializing a system: clock, GPIO, timer, serial port and I2C. Initializing system interfaces such as SPI and the like, communicating a serial port in a DMA mode, and starting a timer, wherein the rate is 115200 baud.
(2) Peripheral initialization: the power management chip is initialized, the LDO is started, FLASH and FRAM are initialized, PCAP01 firmware is loaded to the RAM, and the ID of the temperature and humidity sensor SHT3X is read.
(3) Network initialization: acquiring CCID, checking the network attachment state of M5311, if not, trying to attach again, if continuously inquiring 3 times of unattached networks, closing M5311, and waiting for next reconnection; if the attachment is successful, connecting the server in a UDP mode and establishing a connection mark.
(4) Measurement data: starting LDO and initializing corresponding I2And the interface C reads the ID of the temperature and humidity sensor SHT3X, loads PCAP01 firmware to an operating memory RAM, configures parameters, delays for 2.5 seconds, reads the capacitance value, reads the temperature and humidity and the reading time, writes data into FLASH in a certain format, and calibrates the writing position.
(5) And (3) sending data: and when the connection flag bit is Ture, reading data from FLASH, calculating whether single-frame or multi-frame data is sent at this time according to the distance between the read-write pointer and the connection flag bit, reading the signal quality, combining the signal quality with other data (CCID, equipment ID, firmware version, IP and the like) to form a communication protocol frame, sending the communication protocol frame to a server, marking the sending position of the next frame if the receiving server receives ACK, if the receiving server does not receive ACK after overtime, not operating, closing the LDO, setting the time of next awakening, entering a low-power consumption sleep state, and performing the next data reading and data sending until the awakening time comes, and repeatedly circulating.
The invention has the beneficial effects that: the capacitance sensor of the monitor adopts a self-made cylindrical capacitance sensor, a high-precision temperature and humidity sensor is added, a single chip microcomputer is adopted as a control center, a data transmission module of a low-power-consumption wireless transmission technology is utilized, good measurement precision, safety and stability are guaranteed, power consumption of the monitoring equipment is reduced, and long-term use of the equipment in an actual use environment is guaranteed.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive exercise.
FIG. 1 is a schematic view of the overall internal structure of the present invention;
FIG. 2 is a perspective view of the overall structure of the present invention;
FIG. 3 is a schematic diagram of a main control module according to the present invention;
FIG. 4 is a schematic view of a detecting assembly according to the present invention;
FIG. 5 is a schematic diagram of a sensor circuit board structure according to the present invention
FIG. 6 is a general flow chart of the system for the operation of the present invention;
FIG. 7 is a network connection flow diagram of the operation of the present invention;
FIG. 8 is a measurement flow chart of the working process of the present invention;
fig. 9 is a flow chart of the data transmission process of the present invention.
In the figure: 1. host computer shell, 2, display, 3, antenna, 4, battery, 5, battery clamp plate, 6, master control circuit board, 601, clock, 602, singlechip, 603, communication module, 7, ring flange, 8, extension pipe, 9, sensor circuit board, 901, high accuracy capacitance measurement chip, 902, temperature and humidity sensor, 10, capacitance sensor T type circle base, 11, capacitance sensor inner tube probe, 12, capacitance sensor outer tube probe.
Detailed Description
In order to make the objects, features and advantages of the present invention more obvious and understandable, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the embodiments described below are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The technical scheme of the invention is further explained by the specific implementation mode in combination with the attached drawings.
In the description of the present invention, it is to be understood that the terms "upper", "lower", "top", "bottom", "inner", "outer", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referenced devices or elements must have a particular orientation, be constructed and operated in a particular orientation, and thus, are not to be construed as limiting the present invention.
Referring to fig. 1-9, a high-precision low-power consumption tobacco leaf moisture content monitor comprises a host shell (1), a detection assembly and a main control assembly, wherein the back of the host shell (1) is fixedly connected with one end of an extension pipe (8) through a flange plate (7), and the other end port of the extension pipe (8) is internally provided with a large-diameter end of a T-shaped circular base (10) of a capacitance sensor;
the detection assembly comprises a capacitance sensor T-shaped circular base (10), a sensor circuit board (9), a high-precision capacitance measurement chip (901), a temperature and humidity sensor (902), a capacitance sensor inner cylinder probe (11) and a capacitance sensor outer cylinder probe (12), wherein the sensor circuit board (9) is installed in a concave surface structure at the large-diameter end face of the capacitance sensor T-shaped circular base (10), the capacitance sensor inner cylinder probe (11) and the capacitance sensor outer cylinder probe (12) are electrically connected with the high-precision capacitance measurement chip (901) through corresponding circuits on the sensor circuit board (9), the temperature and humidity sensor (902) is electrically installed at an electric connection position of the corresponding circuits on the sensor circuit board (9), the capacitance sensor inner cylinder probe (11) is tightly installed inside a small-diameter column of the capacitance sensor T-shaped circular base (10), the annular surface of the inner cylinder probe (11) of the capacitance sensor is provided with a plurality of pore structures, the outer cylinder probe (12) of the capacitance sensor is tightly installed outside the small-diameter column of the T-shaped circular base (10) of the capacitance sensor, and the annular surface of the outer cylinder probe (12) of the capacitance sensor is provided with a plurality of pore structures;
the main control assembly comprises a main control circuit board (6), a clock (601), a single chip microcomputer (602) and a communication module (603), wherein corresponding electric joints on one sides of the clock (601) and the main control circuit board (6) are mutually and electrically connected, corresponding electric joints in the middle of the single chip microcomputer (602) and the main control circuit board (6) are mutually and electrically connected, corresponding electric joints in the middle of the communication module (603) and the main control circuit board (6) are mutually and electrically connected, and the main control circuit board (6) is mutually and electrically connected with a sensor circuit board (9) through a lead.
The main control circuit board (6) is arranged in the host shell (1), the display (2) is arranged on the front end face of the host shell (1), and the display (2) is electrically connected with the corresponding electric connection part of the main control circuit board (6) through a flat cable; a battery pressing plate (5) is arranged in the host machine shell (1), and a battery (4) is fixed between the battery pressing plate (5) and the corresponding side wall in the host machine shell (1); a capacitance sensor inner cylinder probe (11) is tightly installed inside a small-diameter column of the capacitance sensor T-shaped circular base (10), a plurality of pore structures are arranged on the annular surface of the capacitance sensor inner cylinder probe (11), a capacitance sensor outer cylinder probe (12) is tightly installed outside the small-diameter column of the capacitance sensor T-shaped circular base (10), and a plurality of pore structures are arranged on the annular surface of the capacitance sensor outer cylinder probe (12); the capacitance sensor inner cylinder probe (11) and the capacitance sensor outer cylinder probe (12) are respectively in electric control connection with the high-precision capacitance measuring chip (901) and in electric control connection with the temperature and humidity sensor (902) through corresponding wires and corresponding circuits on the sensor circuit board (9), the communication module (603) is in electric connection with the antenna (3) through corresponding wires and corresponding circuits on the sensor circuit board (9), and the antenna (3) is installed in a corresponding position in the host shell (1).
Referring to fig. 5-8, a working process of a high-precision low-power consumption tobacco leaf moisture content monitor includes system initialization, peripheral initialization, network initialization, data measurement and data transmission, and specifically includes the following steps:
(1) initializing a system: clock 601, GPIO, timer, serial port and I2C. Initializing system interfaces such as SPI, and the like, wherein the serial port adopts DMA mode communication, and the rate is 115200 baud rateAnd starting a timer.
(2) Peripheral initialization: the power management chip is initialized, the LDO is started, FLASH and FRAM are initialized, PCAP01 firmware is loaded to the RAM, and the ID of the temperature and humidity sensor 902SHT3X is read.
(3) Network initialization: acquiring CCID, checking the network attachment state of M5311, if not, trying to attach again, if continuously inquiring 3 times of unattached networks, closing M5311, and waiting for next reconnection; if the attachment is successful, connecting the server in a UDP mode and establishing a connection mark.
(4) Measurement data: starting LDO and initializing corresponding I2And the interface C is used for reading the ID of the temperature and humidity sensor 902SHT3X, loading PCAP01 firmware to an operating memory RAM, configuring parameters, delaying for 2.5 seconds, reading a capacitance value, reading temperature and humidity, reading time, writing data into FLASH in a certain format, and calibrating the writing position.
(5) And (3) sending data: and when the connection flag bit is Ture, reading data from FLASH, calculating whether single-frame or multi-frame data is sent at this time according to the distance of a read-write pointer, reading the signal quality, combining the signal quality with other data CCID, equipment ID, firmware version, IP and the like to form a communication protocol frame, sending the communication protocol frame to a server, marking the sending position of the next frame if the receiving server receives ACK, if the receiving server does not receive ACK after overtime, not operating, closing the LDO, setting the time of next awakening, entering a low-power sleep state, and performing the next data reading and data sending until the awakening time comes, and repeating the steps.
The inner and outer cylinder probes of the capacitive sensor are self-made cylindrical capacitive sensors and are composed of two metal cylinders with the diameter of 56mm, the length of 120mm, the wall thickness of 0.5mm, the diameter of 40mm, the length of 120mm and the wall thickness of 0.5mm, acrylic is used as a sensor base (10), and the inner and outer cylinder probes (11 and 12) of the capacitive sensor are matched with a high-precision capacitance measurement chip) 901) and are converted into the moisture content of tobacco leaves through a specific algorithm.
It is well within the skill of those in the art to implement and protect the present invention without undue experimentation and without undue experimentation that the present invention is directed to software and process improvements.
It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
The above-mentioned embodiments are only used for illustrating the technical solutions of the present invention, and not for limiting the same; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (7)
1. The utility model provides a high accuracy low-power consumption tobacco leaf moisture content monitor which characterized in that: the device comprises a host shell (1), a detection assembly and a main control assembly, wherein the back surface of the host shell (1) is fixedly connected with one end of an extension pipe (8) through a flange plate (7), and a large-diameter end of a T-shaped circular base (10) of a capacitance sensor is installed in a port at the other end of the extension pipe (8);
the detection assembly comprises a capacitance sensor T-shaped circular base (10), a sensor circuit board (9), a temperature and humidity sensor (902), a high-precision capacitance measurement chip (901), a capacitance sensor inner tube probe (11) and a capacitance sensor outer tube probe (12), wherein the sensor circuit board (9) is installed in a large-diameter end face concave surface structure of the capacitance sensor T-shaped circular base (10), the capacitance sensor inner tube probe (11) and the capacitance sensor outer tube probe (12) are both connected with the high-precision capacitance measurement chip (901) through a corresponding circuit on the sensor circuit board (9) in an electric control mode, the temperature and humidity sensor (902) is electrically installed on the sensor circuit board (9) in an electric connection position corresponding to the circuit, the capacitance sensor inner tube probe (11) is located in a small-diameter cylindrical tube of the capacitance sensor T-shaped circular base (10), and the capacitance sensor outer tube probe (12) is located outside the small-diameter cylindrical tube of the capacitance sensor T-shaped (ii) a
The main control assembly comprises a main control circuit board (6), a clock (601), a single chip microcomputer (602) and a communication module (603), wherein corresponding electric joints on one sides of the clock (601) and the main control circuit board (6) are mutually and electrically connected, corresponding electric joints in the middle of the single chip microcomputer (602) and the main control circuit board (6) are mutually and electrically connected, corresponding electric joints in the middle of the communication module (603) and the main control circuit board (6) are mutually and electrically connected, and the main control circuit board (6) is mutually and electrically connected with a sensor circuit board (9) through a lead.
2. The high-precision low-power consumption tobacco leaf moisture content monitor according to claim 1, characterized in that: the main control circuit board (6) is installed in the host shell (1), the display (2) is installed on the front end face of the host shell (1), and the display (2) is electrically connected with the corresponding electric connection part of the main control circuit board (6) through a flat cable.
3. The high-precision low-power consumption tobacco leaf moisture content monitor according to claim 1, characterized in that: a battery pressing plate (5) is arranged in the host shell (1), and a battery (4) is fixed between the battery pressing plate (5) and the corresponding side wall in the host shell (1).
4. The high-precision low-power consumption tobacco leaf moisture content monitor according to claim 1, characterized in that: the inner cylinder probe (11) of the capacitance sensor is tightly installed inside the small-diameter column of the T-shaped circular base (10) of the capacitance sensor, a plurality of pore structures are formed in the annular surface of the inner cylinder probe (11) of the capacitance sensor, the outer cylinder probe (12) of the capacitance sensor is tightly installed outside the small-diameter column of the T-shaped circular base (10) of the capacitance sensor, and a plurality of pore structures are formed in the annular surface of the outer cylinder probe (12) of the capacitance sensor.
5. The high-precision low-power consumption tobacco leaf moisture content monitor according to claim 1, characterized in that: and corresponding circuits on the sensor circuit board (9) are respectively in electric control connection with corresponding leads of the capacitance sensor inner cylinder probe (11) and the capacitance sensor outer cylinder probe (12), and are in electric control connection with the temperature and humidity sensor (902).
6. The high-precision low-power consumption tobacco leaf moisture content monitor according to claim 1, characterized in that: the communication module (603) is electrically connected with the antenna (3) through corresponding wires and corresponding circuits on the sensor circuit board (9), and the antenna (3) is installed at a corresponding position in the host shell (1).
7. The working process of the high-precision low-power consumption tobacco leaf moisture content monitor according to any one of claims 1-6, which is characterized in that: the working process comprises system initialization, peripheral initialization, network initialization, data measurement and data transmission, and specifically comprises the following steps:
(1) initializing a system: clock (601), GPIO, timer, serial port and I2C. Initializing system interfaces such as SPI and the like, communicating a serial port in a DMA mode, and starting a timer, wherein the rate is 115200 baud.
(2) Peripheral initialization: the power management chip is initialized, the LDO is started, FLASH and FRAM are initialized, PCAP01 firmware is loaded to RAM, and the ID of a temperature and humidity sensor (902) SHT3X is read.
(3) Network initialization: acquiring CCID, checking the network attachment state of M5311, if not, trying to attach again, if continuously inquiring 3 times of unattached networks, closing M5311, and waiting for next reconnection; if the attachment is successful, connecting the server in a UDP mode and establishing a connection mark.
(4) Measurement data: starting LDO and initializing corresponding I2C interface, reading ID of temperature and humidity sensor (902) SHT3X, loading PCAP01 firmware to running memory RAM, configuring parameters, delaying for 2.5 seconds, reading capacitance, reading temperature and humidity, and readingAnd (4) taking time, writing the data into the FLASH in a certain format, and calibrating the writing position.
(5) And (3) sending data: and when the connection flag bit is Ture, reading data from FLASH, calculating whether single-frame or multi-frame data is sent at this time according to the distance between the read-write pointer and the connection flag bit, reading the signal quality, combining the signal quality with other data (CCID, equipment ID, firmware version, IP and the like) to form a communication protocol frame, sending the communication protocol frame to a server, marking the sending position of the next frame if the receiving server receives ACK, if the receiving server does not receive ACK after overtime, not operating, closing the LDO, setting the time of next awakening, entering a low-power consumption sleep state, and performing the next data reading and data sending until the awakening time comes, and repeatedly circulating.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110025151.2A CN112730541A (en) | 2021-01-08 | 2021-01-08 | High-precision low-power-consumption tobacco leaf moisture content monitor |
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| CN202110025151.2A CN112730541A (en) | 2021-01-08 | 2021-01-08 | High-precision low-power-consumption tobacco leaf moisture content monitor |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116223440A (en) * | 2023-05-08 | 2023-06-06 | 四川威斯派克科技有限公司 | Near infrared detection device for tobacco raw material proportioning |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116223440A (en) * | 2023-05-08 | 2023-06-06 | 四川威斯派克科技有限公司 | Near infrared detection device for tobacco raw material proportioning |
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