Tobacco frame pre-compaction personnel detection system

Abstract

The utility model discloses a tobacco frame pre-compaction personnel detection system. The tobacco frame pre-compaction personnel detection system comprises a tobacco leaf compactor, a control cabinet, a guide rail, a human body infrared induction module I, a human body infrared induction module II, a quality detection module and a controller, the first human body infrared induction module, the second human body infrared induction module and the quality detection module are installed at the input end of the controller, and the controller is installed in a control cabinet on the tobacco compacting machine. According to the scheme, the tobacco frame on the conveying guide rail of the tobacco compacting machine can be detected through the human body infrared induction module and the quality detection module, whether people exist in the tobacco frame or not is judged through infrared radiation or quality, and it is guaranteed that no people exist in the frame and safety accidents cannot occur in the process of compacting the tobacco frame and tobacco leaves; and the longitudinal and transverse pyroelectric infrared probes are arranged to ensure that the detection has no four corners, and the authenticity and reliability of the detection are improved by matching with the detection circuit.

Description

Technical Field

[0001] This application relates to the field of personnel detection technology, and in particular to a personnel detection system for pre-compacted smoke frames. Background Technology

[0002] With the deepening of digital transformation in standardized tobacco stations, automated (semi-automated) tobacco leaf grading and packaging operations, parallel (cross-operation) human-machine interaction in confined spaces, and high-altitude operations such as tobacco bale (frame) stacking and loading / unloading have placed new and higher demands on overall safety risk management. Especially during the production season, the lack of effective risk management technologies and control measures for tobacco station safety management, particularly regarding the risks of violations during human-machine interaction operations (such as sorting and packaging), has become a constraint on the sustainable and safe development of tobacco stations.

[0003] During the tobacco harvesting season, each standardized tobacco station collects tens of tons of tobacco leaves daily. Since tobacco leaves have a large unit volume, they need to be compacted and stored in tobacco crates for transport. However, the collected tobacco leaves are quite loose, and the volume of leaves needed to fill the crates often exceeds the crate's capacity. To ensure that more tobacco leaves can be packed into the crates and that they fill the crates completely after compaction, pre-compacting of the tobacco leaves in the crates is necessary. However, the operator of the compaction machine and the pre-compacting operator are often different people. In noisy environments, situations may occur where the pre-compacting operator starts the machine before leaving the area, causing safety accidents. Even if the pre-compacting operator notices and jumps off the tobacco crate, there is still a safety hazard. Utility Model Content

[0004] To address or partially address the problems existing in related technologies, this application provides a personnel detection system for pre-compacting tobacco frames. This system can detect tobacco frames on the conveyor rail of a tobacco compactor using a human infrared sensing module and a quality detection module. By using infrared radiation or quality judgment, it can determine whether there is a person inside the tobacco frame, ensuring that no one is inside the frame during the compaction process and preventing safety accidents. Furthermore, the system is equipped with pyroelectric infrared probes in both longitudinal and transverse directions to ensure detection without any corners, which, combined with the detection circuitry, improves the accuracy and reliability of the detection.

[0005] This application provides a personnel detection system for pre-compacted smoke frames, comprising:

[0006] Tobacco leaf compactor;

[0007] A control cabinet is fixed to the top of the tobacco compactor. A guide rail is installed below the tobacco compactor. A controller is installed inside the control cabinet. A human infrared sensing module one, a human infrared sensing module two, and a quality detection module are installed on the input terminal of the controller.

[0008] The human infrared sensing module includes a pyroelectric infrared probe and a detection circuit. The pyroelectric infrared probe is installed on the feed inlet of the tobacco compactor. The detection direction of the pyroelectric infrared probe is downward scanning. The pyroelectric infrared probe is connected to the controller through the detection circuit.

[0009] The second human infrared sensing module includes a second pyroelectric infrared probe and a detection circuit. The second pyroelectric infrared probe is installed on the rear support column of the tobacco leaf compactor. The detection direction of the second pyroelectric infrared probe is horizontal scanning. The second pyroelectric infrared probe is connected to the controller through the detection circuit.

[0010] The quality inspection module includes an electronic weighbridge and a digital-to-analog converter module. The electronic weighbridge is installed on the guide rail after the tobacco compactor is fed in. The electronic weighbridge is connected to the controller through the digital-to-analog converter module, which is used to convert electrical signals into digital signals.

[0011] Optionally, in some embodiments, the detection circuit includes:

[0012] Amplifier circuit 1, amplifier circuit 2, and comparator circuit;

[0013] The input terminal of the amplifier circuit is connected to the pyroelectric infrared probe, and the output terminal is connected to the V+ port of comparator IC2 in the comparator circuit.

[0014] The input terminal of the amplifier circuit is connected to the pyroelectric infrared probe, and the output terminal is connected to the V- port of comparator IC2 of the comparator circuit.

[0015] Optionally, in some embodiments, amplifier circuit one includes:

[0016] Capacitor C2, transistor Q1, resistor R1 and resistor R2;

[0017] The base of transistor Q1 is connected to the pyroelectric infrared probe through capacitor C2. The collector of transistor Q1 is connected to the comparator circuit through resistor R2. Resistor R1 connects the base and collector of transistor Q1. Transistor Q1 is grounded.

[0018] Optionally, in some embodiments, amplifier circuit two includes:

[0019] Amplifier IC1, resistor R3, resistor R4, capacitor C3, capacitor C4, and capacitor C5;

[0020] The non-inverting input of amplifier IC1 is connected to capacitor C2 after the pyroelectric infrared probe through capacitor C3, and the inverting input of amplifier IC1 is grounded through resistor R3 and capacitor C4 connected in series.

[0021] The output of amplifier IC1 is connected to the comparator circuit. Resistor R4 and capacitor C5 are connected in parallel to the inverting input and output of amplifier IC1.

[0022] Optionally, in some implementations, the comparison circuit includes:

[0023] Comparator IC2, potentiometer Rp, and resistor R5;

[0024] The V+ input of comparator IC2 is connected to the center pin of potentiometer Rp, and the V- input of comparator IC2 is connected to amplifier circuit two.

[0025] The top pin of potentiometer Rp is connected to amplifier circuit one, and the bottom pin is grounded.

[0026] The output of comparator IC2 is connected to the input pin of the controller, and a resistor R5 is connected in parallel to the output of comparator IC2.

[0027] Optionally, in some embodiments, the pyroelectric infrared probe is installed on the beam at the feed inlet of the tobacco compactor, and the pyroelectric infrared probe pair is at a 10-15 degree downward angle to the ground to form a scanning area, so as to minimize the scanning dead angle.

[0028] The pyroelectric infrared probe is horizontally installed on the support column behind the tobacco compactor, 2 meters above the ground.

[0029] Optionally, in some embodiments, the personnel detection system for pre-compacting the smoke frame further includes:

[0030] Hydraulic drive module, track drive module, and alarm module;

[0031] The alarm module includes an audible and visual alarm system, which is connected to the controller output and is used to issue an alarm indicating that someone is working inside the smoke frame.

[0032] The hydraulic drive module and the track drive module are connected to the controller output, and are used to control the operation of the tobacco compactor head and the conveying track, respectively.

[0033] The technical solution provided in this application may include the following beneficial effects:

[0034] The tobacco frames on the conveyor rail of the tobacco compactor are detected by a human infrared sensing module and a quality detection module. The presence of a person in the tobacco frame is determined by infrared radiation or quality judgment, ensuring that no one is in the frame when the tobacco frame and tobacco leaves are being compacted, thus preventing safety accidents. In addition, pyroelectric infrared probes in both the longitudinal and transverse directions are set to ensure that there are no corners to detect, which, together with the detection circuit, improves the authenticity and reliability of the detection.

[0035] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description

[0036] The above and other objects, features and advantages of this application will become more apparent from the more detailed description of exemplary embodiments thereof in conjunction with the accompanying drawings, wherein the same reference numerals generally represent the same components in the exemplary embodiments thereof.

[0037] Figure 1 This is a schematic diagram of the installation position of the personnel detection system for pre-compacting the smoke frame, as shown in an embodiment of this application;

[0038] Figure 2 This is a schematic diagram of a personnel detection system for pre-compacted tobacco frames, as shown in an embodiment of this application.

[0039] Figure 3 This is a schematic diagram of the pyroelectric infrared probe circuit of the personnel detection system for pre-compacted smoke frames, as shown in an embodiment of this application.

[0040] The diagram is labeled as follows: 101, Tobacco leaf compactor; 102, Pyroelectric infrared detector 1; 103, Electronic floor scale; 104, Pyroelectric infrared detector 2; 105, Control cabinet; 106, Guide rail; 107, Tobacco frame; 201, Human body infrared sensor module 1; 202, Human body infrared sensor module 2; 203, Quality inspection module; 204, Controller; 205, Hydraulic drive module; 206, Track drive module; 207, Alarm module. Detailed Implementation

[0041] Embodiments of this application will now be described in more detail with reference to the accompanying drawings. While embodiments of this application are shown in the drawings, it should be understood that this application may be implemented in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided to make this application more thorough and complete, and to fully convey the scope of this application to those skilled in the art.

[0042] It should be understood that although the terms "first," "second," "third," etc., may be used in this application to describe various information, this information should not be limited to these terms. These terms are only used to distinguish information of the same type from one another. For example, without departing from the scope of this application, first information may also be referred to as second information, and similarly, second information may also be referred to as first information. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "multiple" means two or more, unless otherwise explicitly specified.

[0043] In the description of this application, it should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0044] Unless otherwise expressly specified and limited, the terms "installation," "connection," "linking," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0045] During the tobacco harvesting season, each standardized tobacco station collects tens of tons of tobacco leaves daily. Since tobacco leaves have a large unit volume, they need to be compacted and stored in tobacco crates for transport. However, the collected tobacco leaves are quite loose, and the volume of leaves needed to fill the crates often exceeds the crate's capacity. To ensure that more tobacco leaves can be packed into the crates and that they fill the crates completely after compaction, pre-compacting of the tobacco leaves in the crates is necessary. However, the operator of the compaction machine and the pre-compacting operator are often different people. In noisy environments, situations may occur where the pre-compacting operator starts the machine before leaving the area, causing safety accidents. Even if the pre-compacting operator notices and jumps off the tobacco crate, there is still a safety hazard.

[0046] To address the aforementioned issues, this application provides a personnel detection system for pre-compacting tobacco frames. This system uses a human infrared sensing module and a quality detection module to detect tobacco frames on the conveyor rail of a tobacco compactor. By using infrared radiation or quality assessment, it determines whether anyone is inside the tobacco frame, ensuring that no one is present during the compaction process and preventing safety accidents. Furthermore, the system incorporates pyroelectric infrared probes in both longitudinal and transverse directions to ensure detection at all four corners, which, combined with the detection circuitry, improves the accuracy and reliability of the detection.

[0047] The technical solutions of the embodiments of this application are described in detail below with reference to the accompanying drawings.

[0048] Figure 1 This is a schematic diagram of the structure of the personnel detection system for pre-compacted smoke frames shown in the embodiments of this application.

[0049] See Figures 1-3 A personnel detection system for pre-compacting cigarette frames, comprising:

[0050] 101 Tobacco leaf compactor, 102 Pyroelectric infrared detector 1, 103 Electronic floor scale, 104 Pyroelectric infrared detector 2, 105 Control cabinet, 106 Guide rail, 107 Tobacco frame, 201 Human body infrared sensing module 1, 202 Human body infrared sensing module 2, 203 Quality detection module, 204 Controller, 205 Hydraulic drive module, 206 Track drive module, 207 Alarm module;

[0051] The human infrared sensing module 1 201, human infrared sensing module 202 and quality detection module 203 are installed on the input terminal of the controller 204. The controller 204 is installed in the control cabinet 105 on the tobacco compactor 101. The control cabinet 105 is fixed to the top of the tobacco compactor 101.

[0052] Specifically, the human infrared sensing module 201 includes a pyroelectric infrared probe 102 and a detection circuit. The pyroelectric infrared probe 102 is installed on the feed beam of the tobacco compactor 101. The detection direction of the pyroelectric infrared probe 102 is downward scanning. The pyroelectric infrared probe 102 is at a 10-15 degree downward angle to the ground, forming a scanning area to minimize the scanning dead angle. The pyroelectric infrared probe 102 is connected to the controller 204 through the detection circuit.

[0053] Specifically, the human infrared sensing module 202 includes a pyroelectric infrared probe 104 and a detection circuit. The pyroelectric infrared probe 104 is horizontally installed on the support column behind the tobacco compactor 101 at a height of 2 meters above the ground. The detection direction of the pyroelectric infrared probe 104 is horizontal scanning. The pyroelectric infrared probe 104 is connected to the controller 204 through the detection circuit.

[0054] Specifically, the detection circuit includes: amplifier circuit one, amplifier circuit two, and comparator circuit; amplifier circuit one includes: capacitor C2, transistor Q1, resistor R1, and resistor R2; the base of transistor Q1 is connected to the pyroelectric infrared probe through capacitor C2, the collector of transistor Q1 is connected to the comparator circuit through resistor R2, resistor R1 connects the base and collector of transistor Q1, and transistor Q1 is grounded.

[0055] The second amplifier circuit includes: amplifier IC1, resistor R3, resistor R4, capacitor C3, capacitor C4, and capacitor C5; the non-inverting input terminal of amplifier IC1 is connected to capacitor C2 after the pyroelectric infrared probe through capacitor C3, and the inverting input terminal of amplifier IC1 is grounded through resistor R3 and capacitor C4 connected in series; the output terminal of amplifier IC1 is connected to the comparator circuit, and resistor R4 and capacitor C5 are connected in parallel on the inverting input terminal and the output terminal of amplifier IC1.

[0056] The comparator circuit includes: comparator IC2, potentiometer Rp, and resistor R5; the V+ input of comparator IC2 is connected to the center pin of potentiometer Rp, and the V- input of comparator IC2 is connected to amplifier circuit two; the top pin of potentiometer Rp is connected to amplifier circuit one, and the bottom pin is grounded; the output of comparator IC2 is connected to the input pin of controller 204, and resistor R5 is connected in parallel to the output of comparator IC2. During circuit debugging, adjust potentiometer Rp to select a suitable reference voltage to achieve optimal sensitivity.

[0057] The pyroelectric infrared detector uses an LN074B probe. When the pyroelectric infrared detector receives the pyroelectric infrared signal emitted by a human body, it converts it internally into a weak low-frequency signal with a frequency of approximately 0.3-3Hz. This signal is then amplified by two stages of amplifier circuits (Amplifier 1 and Amplifier 2) before being input to voltage comparator IC2. The two-stage voltage amplification uses DC amplifiers, where RP is a reference voltage adjustment potentiometer used to adjust the circuit sensitivity, i.e., the detection range. The detection range of the human infrared sensing module 202 should be adjusted to be within the front beam of the tobacco compactor 101. When no one is in the tobacco frame, the reference voltage (V+ voltage of comparator IC2) is higher than the output voltage of amplifier IC1 (V- voltage of comparator IC2), and comparator IC2 outputs a low level. When someone is working in the tobacco frame, the probe outputs a detection voltage, which, after amplification by amplifier circuits 1 and 2, makes the signal output voltage higher than the reference voltage, at which point the comparator circuit outputs a high level.

[0058] Specifically, the quality inspection module 203 includes an electronic weighbridge 103 and a digital-to-analog conversion module. The electronic weighbridge 103 is installed on the guide rail 106 after the tobacco compactor 101 is fed. The electronic weighbridge 103 is connected to the controller 204 through the digital-to-analog conversion module, which is used to convert electrical signals into digital signals.

[0059] Specifically, the alarm module 207 includes an audible and visual alarm system connected to the output of the controller 204, used to issue an alarm indicating that someone is working inside the smoke frame.

[0060] Specifically, the hydraulic drive module 205 and the track drive module 206 are connected to the output of the controller 204 and are used to control the operation of the press head and the conveying track of the tobacco compactor 101, respectively.

[0061] When this application is used, after the tobacco station staff completes the pre-compaction of tobacco leaves in the tobacco frame at the front end of the tobacco compactor 101, the tobacco compactor 101 is started to transport the tobacco frame and tobacco leaves to the press head of the tobacco compactor 101. At the same time, the human infrared sensing module 1 201 and the human infrared sensing module 202 are started. During the transportation process, when either of the two pyroelectric infrared probes detects infrared radiation in the frame, or when the quality detection module 203 detects that the quality is abnormal and exceeds the normal tobacco frame quality by too much, the controller 204 will issue a command to control the hydraulic drive module 205 and the track drive module 206 to stop running, and control the alarm module 207 to issue an alarm to remind the pre-compaction personnel in the frame to leave. If no infrared radiation or quality abnormalities are detected, or if the pre-compaction personnel leave the tobacco frame, the controller 204 issues a command to control the hydraulic drive module 205 and the track drive module 206 to continue operating. After the tobacco frame and tobacco leaves are in place, the controller 204 sends a command to the hydraulic drive module 205 to control the pressure head to press down, thereby compacting the tobacco frame and tobacco leaves. This effectively avoids safety accidents for the pre-compaction personnel and improves the safety management level of the tobacco station.

[0062] The various embodiments of this application have been described above. These descriptions are exemplary and not exhaustive, nor are they limited to the disclosed embodiments. Many modifications and variations will be apparent to those skilled in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen to best explain the principles, practical application, or improvement of the technology in the market, or to enable others skilled in the art to understand the embodiments disclosed herein.

Claims

1. A tobacco topper pre-compact detection system characterized by, The utility model relates to a tobacco leaf compactor (101), a control cabinet (105) is fixedly connected on the top of tobacco leaf compactor (101), a guide rail (106) is installed below tobacco leaf compactor (101), a controller (204) is installed in control cabinet (105), human body infrared induction module one (201), human body infrared induction module two (202) and quality detection module (203) are installed on the input end of controller (204), human body infrared induction module one (201) includes heat release infrared probe one (102) and detection circuit, heat release infrared probe one (102) is installed on the feed inlet of tobacco leaf compactor (101), and the detection direction of heat release infrared probe one (102) is downward scanning, and heat release infrared probe one (102) is connected to controller (204) through detection circuit, human body infrared induction module two (202) includes heat release infrared probe two (104) and detection circuit, heat release infrared probe two (104) is installed on the rear support column of tobacco leaf compactor (101), and the detection direction of heat release infrared probe two (104) is transverse scanning, and heat release infrared probe two (104) is connected to controller (204) through detection circuit, quality detection module (203) includes electronic platform scale (103) and digital-analog conversion module, electronic platform scale (103) is installed on the guide rail (106) behind the feed of tobacco leaf compactor (101), and electronic platform scale (103) is connected to controller (204) through digital-analog conversion module, and digital-analog conversion module is used to convert electric signal into digital signal, the detection circuit includes: amplification circuit one, amplification circuit two and comparison circuit, the input end of amplification circuit one is connected heat release infrared probe, and the output end is connected the V+ of comparator IC2 of comparison circuit, the input end of amplification circuit two is connected heat release infrared probe, and the output end is connected the V- of comparator IC2 of comparison circuit, the amplification circuit one includes: capacitor C2, triode Q1, resistance R1 and resistance R2, the base of triode Q1 is connected heat release infrared probe through capacitor C2, the collector of triode Q1 is connected comparison circuit through resistance R2, resistance R1 connects the base and the collector of triode Q1, and triode Q1 is grounded, the amplification circuit two includes: amplifier IC1, resistance R3, resistance R4, capacitor C3, capacitor C4 and capacitor C5, the positive input end of amplifier IC1 is connected to the capacitor C2 behind heat release infrared probe through capacitor C3, and the inverting input end of amplifier IC1 is connected to ground through the resistance R3 and capacitor C4 in series, the output end of amplifier IC1 is connected to comparison circuit, and the inverting input end and the output end of amplifier IC1 are connected with resistance R4 and capacitor C5 in parallel, the comparison circuit includes: comparator IC2, potentiometer Rp and resistance R5, the V+ of the input end of comparator IC2 is connected potentiometer Rp center pin, and the V- of the input end of comparator IC2 is connected amplification circuit two, the top pin of potentiometer Rp is connected amplification circuit one, and the bottom pin is grounded. ​ ​ ​ ​ ​ 2. The tobacco pad pre-compaction attendant detection system of claim 1, wherein, ​ ​ ​ ​ 3. The tobacco pad pre-compactation attendant detection system of claim 2, wherein, ​ ​ ​ 4. The tobacco pad pre-compaction attendant detection system of claim 2, wherein, ​ ​ ​ ​ 5. The tobacco pad pre-compactation attendant detection system of claim 2, wherein, ​ ​ ​ ​ The output end of the comparator IC2 is connected to the input pin of the controller (204), and the output end of the comparator IC2 is connected in parallel with the resistor R5.

6. The pre-pressing personnel detection system of the tobacco frame according to claim 1, characterized in that: The thermal infrared probe one (102) is installed on the beam column of the tobacco leaf compactor (101) inlet, and the thermal infrared probe one (102) has a 10-15 degree depression angle to the ground, forming a scanning area to minimize the scanning dead angle; The thermal infrared probe two (104) is horizontally installed on the rear support column of the tobacco leaf compactor (101) at a distance of 2 meters from the ground.

7. The tobacco lattice pre-compaction attendant detection system of claim 1 wherein, Further comprising: A hydraulic drive module (205), a track drive module (206) and an alarm module (207); The alarm module (207) comprises an audible and visual alarm system connected to the output end of the controller (204) for performing the alarm of the person working in the tobacco frame; The hydraulic drive module (205) and the track drive module (206) are connected to the output end of the controller (204) for controlling the operation of the press head and the conveying track of the tobacco leaf compactor (101) respectively.

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