A cigarette storage shortage detection system and method

Abstract

The present invention discloses a system and method for detecting missing cigarettes in a cigarette warehouse. The system includes a control module and a cigarette detection module; wherein the cigarette detection module includes at least one cigarette detection channel; the cigarette detection module is used to send a detection start signal to the control module when a preset level signal is detected, and to emit a laser to the cigarettes in each cigarette detection channel; the cigarette detection module is also used to receive the reflected light of the laser on the cigarette, and generate reflection reception data based on the reflected light; the control module is used to obtain the reflection reception data output by the cigarette detection module after receiving the detection start signal, and determine the missing cigarette detection result based on the reflection reception data of each cigarette detection channel. This technical solution solves the problem of low accuracy in missing cigarette detection, and can improve the accuracy of missing cigarette detection while ensuring the operating efficiency of the cigarette packaging machine, thereby reducing the maintenance cost of the missing cigarette detection system in the cigarette warehouse.

Description

Technical Field

[0001] The present invention relates to the technical field of missing cigarette detection, and in particular to a missing cigarette detection system and method for a cigarette storage. Background Art

[0002] Currently, the missing cigarette detection system used in cigarette packaging machines is a mechanical system. This system consists of two metal guide plates, a metal probe, a spring, and a plastic base. The metal probe is nestled within the spring and connected to the two metal guide plates. When no cigarettes are detected, the two metal guide plates remain conductive. When the metal probe detects a cigarette, the spring is pushed open by the metal probe, disconnecting the two metal guide plates. The mechanical detection system determines the presence of cigarettes in the cigarette bin based on the on / off status of the two metal guide plates.

[0003] However, metal springs and guides are prone to oxidation, affecting the accuracy of cigarette detection results. Maintenance personnel need to frequently perform maintenance on the missing cigarette detection system, seriously affecting the equipment's operating efficiency. Summary of the Invention

[0004] The present invention provides a cigarette warehouse missing-stick detection system and method to solve the problem of low accuracy in missing-stick detection. It can improve the accuracy of missing-stick detection while ensuring the operating efficiency of the cigarette packaging machine, and reduce the maintenance cost of the cigarette warehouse missing-stick detection system.

[0005] According to one aspect of the present invention, a cigarette bank shortage detection system is provided, the system comprising a control module and a cigarette detection module; wherein the cigarette detection module comprises at least one cigarette detection channel;

[0006] The cigarette detection module is used to send a detection start signal to the control module and emit laser light to the cigarettes in each cigarette detection channel when a preset level signal is detected;

[0007] The cigarette detection module is further configured to receive the reflected light of the laser on the cigarette and generate reflection reception data based on the reflected light;

[0008] The control module is used to obtain the reflection reception data output by the cigarette detection module after receiving the detection start signal, and determine the missing cigarette detection result based on the reflection reception data of each cigarette detection channel.

[0009] According to another aspect of the present invention, a method for detecting cigarette shortages in a cigarette bank is provided. The method is performed by a cigarette shortage detection system, wherein the cigarette shortage detection system includes a control module and a cigarette detection module; wherein the cigarette detection module includes at least one cigarette detection channel; and the method comprises:

[0010] When the cigarette detection module detects a preset level signal, it sends a detection start signal to the control module and emits laser light to the cigarettes in each cigarette detection channel;

[0011] The cigarette detection module receives the reflected light of the laser on the cigarette and generates reflection reception data according to the reflected light;

[0012] After receiving the detection start signal, the control module obtains the reflection reception data output by the cigarette detection module, and determines the missing cigarette detection result based on the reflection reception data of each cigarette detection channel.

[0013] The technical solution of the embodiment of the present invention is that, upon detecting a preset level signal, the cigarette detection module sends a detection start signal to the control module and emits a laser toward the cigarettes in each cigarette detection channel. The cigarette detection module receives the reflected light from the laser on the cigarettes and generates reflection reception data based on the reflected light. After receiving the detection start signal, the control module obtains the reflection reception data output by the cigarette detection module and determines the missing cigarette detection result based on the reflection reception data of each cigarette detection channel. This technical solution solves the problem of low missing cigarette detection accuracy. It can improve the missing cigarette detection accuracy while ensuring the operating efficiency of the cigarette packaging machine, and reduce the maintenance cost of the missing cigarette detection system in the cigarette warehouse.

[0014] It should be understood that the content described in this section is not intended to identify the key or important features of the embodiments of the present invention, nor is it intended to limit the scope of the present invention. Other features of the present invention will become readily understood through the following description. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0016] Figure 1 This is a schematic structural diagram of a cigarette bank shortage detection system provided according to the first embodiment of the present invention;

[0017] Figure 2 This is a schematic diagram of the structure of a cigarette bank missing detection system provided according to the second embodiment of the present invention;

[0018] Figure 3 This is a flowchart of a method for detecting a cigarette shortage in a cigarette bin according to a third embodiment of the present invention; DETAILED DESCRIPTION

[0019] In order to enable those skilled in the art to better understand the solutions of the present invention, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts should fall within the scope of protection of the present invention.

[0020] It should be noted that the terms "first", "second", etc. in the specification and claims of the present invention and the above-mentioned drawings are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that the data used in this way can be interchangeable where appropriate, so that the embodiments of the present invention described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices. The acquisition, storage, use, processing, etc. of data in the technical solution of this application comply with the relevant provisions of national laws and regulations.

[0021] Example 1

[0022] Figure 1 1 is a schematic diagram of a cigarette storage missing detection system according to the first embodiment of the present invention. This embodiment is a cigarette storage missing detection system, which can be applied to the missing detection scenario of cigarette packaging equipment, such as Figure 1 As shown, the system includes a cigarette detection module 110 and a control module 120; wherein, the cigarette detection module 110 includes at least one cigarette detection channel;

[0023] The cigarette detection module 110 is configured to send a detection start signal to the control module 120 upon detecting a preset level signal, and to emit laser light toward the cigarettes in each cigarette detection channel;

[0024] The cigarette detection module 110 is further configured to receive the reflected light of the laser on the cigarette and generate reflection reception data based on the reflected light;

[0025] The control module 120 is used to obtain the reflection reception data output by the cigarette detection module 110 after receiving the detection start signal, and determine the missing cigarette detection result based on the reflection reception data of each cigarette detection channel.

[0026] In this solution, the cigarette detection module 110 can be a non-contact detection module based on a laser sensor and can include a transmitter and a receiver. The transmitter is used to transmit laser light toward the cigarette, and the receiver is used to receive light reflected from the cigarette. The control module 120 can include a controller such as a single-chip microcomputer or microprocessor, and may also include peripheral circuits of the controller, such as a voltage regulator circuit and a power supply circuit.

[0027] To accurately detect cigarettes, the cigarette detection module 110 may include one or more cigarette detection channels, each capable of detecting a single cigarette or a preset number of cigarettes. The cigarette detection module 110 can periodically detect cigarettes in the cigarette storage, with the detection period controlled by a square wave signal. For example, the rising edge of the square wave can mark the start or end of a detection period.

[0028] It is easy to understand that the preset level signal can be a rising edge signal or a falling edge signal. The cigarette detection module 110 can start moving towards the cigarette when the preset level signal is detected. When the distance between the cigarette detection module 110 and the cigarette is within the preset distance range, the laser is emitted to the cigarettes in each cigarette detection channel through the transmitting unit. After the laser is emitted, the cigarette detection module 110 can receive the reflected light of the laser on the cigarette through the receiving unit and generate reflection reception data based on the reflected light, that is, convert the analog signal (optical signal) into a digital signal (electrical signal).

[0029] Upon detecting the preset level signal, the cigarette detection module 110 may also transmit a detection start signal to the control module 120 to report the operating status of the cigarette detection module 110. The detection start signal may be a flag signal. After receiving the detection start signal from the cigarette detection module 110, the control module 120 may obtain the reflected reception data output by the cigarette detection module 110 and determine the missing cigarette detection result for each cigarette detection channel based on the reflected reception data of each cigarette detection channel.

[0030] It is understood that the control module 120 can determine the missing cigarette detection result for each cigarette detection channel based on the magnitude of the reflected received data, or can determine the missing cigarette detection result for each cigarette detection channel based on whether the reflected received data is complete. The missing cigarette detection result can include whether a cigarette detection channel is missing, and can also include the number of cigarettes missing from the cigarette detection channel.

[0031] In a feasible solution, the control module 120 is further configured to determine that a cigarette is missing from the cigarette detection channel when the reflection reception data of the cigarette detection channel is less than or equal to a preset sensitivity.

[0032] The control module 120 can pre-set the sensitivity as a reference value for the reflected received data. If the reflected received data of the cigarette detection channel is less than or equal to the sensitivity, it is determined that the cigarette detection channel is missing a cigarette. If the reflected received data of the cigarette detection channel is greater than the sensitivity, it is determined that the cigarette detection channel is not missing a cigarette.

[0033] This scheme can achieve accurate and reliable missing branch detection by comparing the reflection received data with the sensitivity.

[0034] On the basis of the above solution, optionally, the control module 120 is further configured to determine that the cigarette detection channel is faulty when the missing cigarette detection channel has detected missing cigarettes for a preset number of consecutive times.

[0035] The control module 120 can record the missing cigarette detection results of each cigarette detection channel during each detection cycle. If a cigarette detection channel consistently detects missing cigarettes for a preset number of times, the cigarette detection channel may be faulty and requires troubleshooting. The preset number of times can be set based on the probability of failure of the cigarette detection channel. For example, if a cigarette detection channel detects 5 failures for every 100 cigarettes detected, the preset number of times can be set to 5.

[0036] This solution can detect the fault conditions of the cigarette detection channel based on the continuously output missing cigarette detection results, which is conducive to timely eliminating the faults of the cigarette detection module and ensuring the efficiency of cigarette packaging.

[0037] This technical solution uses a cigarette detection module to send a detection start signal to the control module upon detecting a preset level signal, and then emit a laser toward the cigarettes in each cigarette detection channel. The cigarette detection module then receives the laser light reflected from the cigarettes and generates reflection reception data based on the reflected light. After receiving the detection start signal, the control module acquires the reflection reception data output by the cigarette detection module and determines the missing cigarette detection result based on the reflection reception data from each cigarette detection channel. This technical solution solves the problem of low missing cigarette detection accuracy, improving the missing cigarette detection accuracy while ensuring the operating efficiency of the cigarette packaging machine, and reducing the maintenance cost of the missing cigarette detection system in the cigarette warehouse.

[0038] Example 2

[0039] This embodiment is a preferred embodiment provided on the basis of the above embodiments. Figure 2 FIG. 1 is a schematic diagram of a cigarette storage shortage detection system according to the second embodiment of the present invention. Figure 2 As shown, the components of the original cigarette bank lack detection system remain unchanged, and a communication module 130 and a user terminal 140 are newly added.

[0040] In this solution, the user terminal 140 is used to send a request signal to the communication module 130; wherein the request signal includes at least one of a parameter setting signal, an information query signal, and a cigarette detection channel control signal;

[0041] The communication module 130 is used to receive the request signal and send the request signal to the control module 120;

[0042] The control module 120 is used to process the request signal, determine the response signal, and send the response signal to the communication module 130;

[0043] The communication module 130 is configured to receive a response signal and send the response signal to the user terminal 140 .

[0044] It is understandable that the cigarette warehouse missing detection system can deploy a communication module 130 for receiving a request signal sent by a user terminal 140. The user terminal 140 can be a user's smartphone, computer, tablet computer, etc. The user terminal 140 can be configured with a missing detection management application to facilitate information acquisition and detection control. The user can perform operations such as parameter setting, information query, and cigarette detection channel control in the missing detection management application interface. Accordingly, in response to the request operation of the user terminal 140, the user terminal 140 can send a request signal to the communication module 130. Specifically, the request signal may include a parameter setting signal, an information query signal, and a cigarette detection channel control signal. Among them, the parameter setting signal may include a setting signal for parameters such as sensitivity and detection cycle. The information query signal may include a query signal for information such as the number of cigarette detection matches, the number of failures of the cigarette detection channel, and the missing detection results of the cigarette detection channel. The cigarette detection channel control signal may include a control signal for the opening, closing, and testing states of the cigarette detection channel.

[0045] The communication module 130 can receive a request signal from the user terminal 140 and send the request signal to the control module 120. The control module 120 can process the request signal accordingly, generate a response signal based on the response information, and send the response signal to the communication module 130. For example, if the request signal is a sensitivity setting signal, the response signal can indicate a successful sensitivity setting; if the request signal is a missing branch detection result query signal, the response signal can provide feedback on the missing branch detection result. The communication module 130 can receive the response signal and send it to the user terminal 140. The user terminal 140 can receive the response signal, identify the response signal, and recover the response information.

[0046] The above solution can realize remote control of the cigarette warehouse out-of-stock detection system, which is conducive to flexible parameter setting and timely acquisition of information.

[0047] Based on the above solution, the cigarette storage missing detection system also includes a storage module; the storage module is used to store sensitivity, missing cigarette detection results, fault detection results and cigarette detection channel control records.

[0048] It is easy to understand that the cigarette warehouse missing detection system stores information such as sensitivity, missing detection results, fault detection results, and cigarette detection channel control records, which is conducive to the efficient management of the system. In the event of emergencies such as system power outages and faults, the abnormalities can be eliminated in time and the operation of the cigarette warehouse missing detection system can be restored in an orderly manner.

[0049] In a specific example, a cigarette bank missing detection system includes a power supply circuit, a single-chip microcomputer, a WiFi communication module, a laser sensor module, and a storage module. The main working principle of the system is to emit a laser through the transmitting unit of the laser sensor module. When the laser encounters a cigarette, the light is reflected back and received by the receiving unit of the laser sensor module. After conversion by the analog-to-digital unit of the single-chip microcomputer, the status of the cigarette is determined by comparing the return value with the set sensitivity value. According to the status of the cigarette, information such as the cigarette detection signal, the total number of cigarettes, and the number of sensor failures can be obtained. Information such as the number of cigarette detections, the number of sensor failures, and the laser sensor status (laser start and stop status and sensitivity value) is stored in the storage module to ensure that user configuration is not lost when the system is powered off. Data interaction of the cigarette bank missing detection system is realized through the WiFi communication module. The server is built on the WiFi communication module. The user terminal can connect to the cigarette bank missing detection system via TCP to query or modify the system status and related parameters.

[0050] After powering on, the cigarette bank's missing cigarette detection system begins with program initialization, including the analog-to-digital conversion configuration function, serial port configuration function, WiFi communication module function, and storage function. After program initialization, the microcontroller reads the storage module data (user-configured data) and periodically calls the analog-to-digital conversion processing function, WiFi data processing function, and storage read / write function to implement functions such as cigarette detection in the cigarette detection channel, fault self-diagnosis, laser power on / off, sensitivity adjustment, and parameter query.

[0051] The initialization of the analog-to-digital conversion processing function includes the configuration of data acquisition pins, output drive pins, analog-to-digital conversion signal sampling time, channel hold time, working clock frequency and other parameters.

[0052] Initializing the WiFi data processing function involves configuring the communication port and establishing a WiFi server. The cigarette depot's low-stick detection system uses the ESP8266 chip as the WiFi communication module to communicate with the user terminal. Data is transmitted via serial communication with the WiFi communication module. Therefore, the corresponding serial port must be defined in the microcontroller to enable data transmission with the WiFi communication module. This includes selecting the data bits, baud rate, interrupt enable, and serial port number. After serial port configuration is complete, the server is set up within the cigarette depot's low-stick detection system, and parameters such as the WiFi name, password, and multiple connection methods are set.

[0053] The following describes the analog-to-digital conversion processing function, WiFi data processing function, and user data initialization function respectively.

[0054] The analog-to-digital conversion function converts the analog signal received by the laser sensor module's receiving unit into a digital signal and compares the digital signal with the sensitivity to determine the cigarette detection status. The detection status of the cigarette is used to determine the rising and falling edges of the laser sensor's detection of the cigarette.

[0055] Method for obtaining the number of cigarette detections: Calculate the total number of cigarette detections through the rising edge signal. That is, when the sensor has a rising edge signal, the number of cigarette detections increases by one.

[0056] Cigarette detection method: When all seven cigarette detection channels detect cigarettes (digital signals are greater than the sensitivity value), a low level output indicates that a cigarette has been detected. Using AND logic, if all seven channels are simultaneously 1, a 0 output indicates that the cigarette bin is fully loaded.

[0057] Cigarette detection channel fault self-diagnosis method: When the laser sensor module is close to a cigarette, the detection status of each cigarette detection channel is determined. A rising edge in one of the cigarette detection channels indicates that the laser sensor module has approached the cigarette. A falling edge in one of the cigarette detection channels indicates that the laser sensor module has moved away from the cigarette. When a rising edge signal is detected in one of the cigarette detection channels, the detection channel determines whether a cigarette is missing. If a cigarette is missing in a detection channel, the fault count for that cigarette detection channel is incremented by one. When the fault count reaches five, the cigarette detection channel is determined to be faulty.

[0058] Fault Detection Statistics Flag Description: This flag indicates that the laser sensor module is far from a cigarette. When all cigarette detection channels detect a falling edge, the fault detection statistics flag is reset. Conversely, when one of the cigarette detection channels detects a rising edge, the fault detection statistics flag is set to 1, indicating that the laser sensor module is close to a cigarette. If the laser sensor module is close to a cigarette, the number of faults is counted.

[0059] The WiFi data processing function is primarily responsible for receiving request signals from user terminals and returning response signals. Request signals can include parameter settings and modifications, querying and modifying the laser sensor's on and off status, querying and clearing the number of laser sensor failures, querying the number of cigarette detections, and modifying and querying sensitivity.

[0060] The WiFi communication module receives a request signal from the user terminal and sends it to the microcontroller. The microcontroller then performs the corresponding task processing, including receiving commands to turn on and off laser emission, modify sensitivity, query laser power status, query sensitivity, query diagnostic values, clear diagnostic values, and query the total number of cigarettes detected. Once the task is completed, the microcontroller can return a corresponding response signal.

[0061] In this solution, the non-contact detection method of the cigarette warehouse missing detection system is integrated with a self-detection function. Users can grasp the status of each cigarette detection channel at any time, which brings convenience to equipment maintenance and extends the service life of the cigarette warehouse missing detection system. It solves the problems of mechanical detection systems such as springs and guide plates made of iron materials that are easily oxidized, resulting in high detection failure rate, high failure rate and high usage cost.

[0062] Example 3

[0063] Figure 3 This is a flowchart of a method for detecting missing cigarettes in a cigarette warehouse provided according to Example 3 of the present invention. This embodiment can be applied to the missing cigarette detection scenario of cigarette packaging equipment. The method can be executed by the missing cigarette detection system provided in the embodiment of the present application. The missing cigarette detection system includes a control module and a cigarette detection module; wherein the cigarette detection module includes at least one cigarette detection channel.

[0064] like Figure 3 As shown, the cigarette bank missing detection method includes:

[0065] S310, when the cigarette detection module detects a preset level signal, it sends a detection start signal to the control module and emits lasers to the cigarettes in each cigarette detection channel.

[0066] S320, receiving the reflected light of the laser on the cigarette through the cigarette detection module, and generating reflection reception data according to the reflected light.

[0067] S330, after receiving the detection start signal, the control module obtains the reflection reception data output by the cigarette detection module, and determines the missing cigarette detection result based on the reflection reception data of each cigarette detection channel.

[0068] In this solution, optionally, determining the missing cigarette detection result based on the reflection reception data of each cigarette detection channel includes:

[0069] When the reflection reception data of the cigarette detection channel is less than or equal to a preset sensitivity, it is determined that the cigarette detection channel is missing.

[0070] Based on the above solution, optionally, after determining the missing branch detection result, the method further includes:

[0071] When the missing cigarette detection results of the cigarette detection channel for a preset number of consecutive times are all missing cigarettes, the control module determines that the cigarette detection channel is faulty.

[0072] In a feasible solution, the cigarette bank out-of-stock detection system further includes a communication module and a user terminal; and the method further includes:

[0073] Sending a request signal to the communication module through the user terminal; wherein the request signal includes at least one of a parameter setting signal, an information query signal, and a cigarette detection channel control signal;

[0074] receiving a request signal through a communication module and sending the request signal to a control module;

[0075] The control module processes the request signal, determines the response signal, and sends the response signal to the communication module;

[0076] The communication module receives the response signal and sends the response signal to the user terminal.

[0077] In a preferred embodiment, the cigarette bank out-of-stock detection system further includes a storage module; and the method further includes:

[0078] The storage module stores sensitivity, missing cigarette detection results, fault detection results and cigarette detection channel control records.

[0079] This technical solution uses a cigarette detection module to send a detection start signal to the control module upon detecting a preset level signal, and then emit a laser toward the cigarettes in each cigarette detection channel. The cigarette detection module then receives the laser light reflected from the cigarettes and generates reflection reception data based on the reflected light. After receiving the detection start signal, the control module acquires the reflection reception data output by the cigarette detection module and determines the missing cigarette detection result based on the reflection reception data from each cigarette detection channel. This technical solution solves the problem of low missing cigarette detection accuracy, improving the missing cigarette detection accuracy while ensuring the operating efficiency of the cigarette packaging machine, and reducing the maintenance cost of the missing cigarette detection system in the cigarette warehouse.

[0080] It should be understood that the various forms of the processes shown above can be used to reorder, add, or delete steps. For example, the steps described in the present invention can be performed in parallel, sequentially, or in a different order, as long as the desired results of the technical solution of the present invention can be achieved. This is not limited herein.

[0081] The above specific embodiments do not limit the scope of protection of the present invention. Those skilled in the art will appreciate that various modifications, combinations, sub-combinations, and substitutions may be made based on design requirements and other factors. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the present invention are intended to be included within the scope of protection of the present invention.

Claims

1. A cigarette bank missing detection system, characterized in that: The cigarette bank lack detection system includes a control module, a cigarette detection module, a communication module and a user terminal; wherein the cigarette detection module includes at least one cigarette detection channel; The cigarette detection module is used to send a detection start signal to the control module and emit laser light to the cigarettes in each cigarette detection channel when detecting a preset level signal; the preset level signal is used to indicate the start or end of a detection cycle; The cigarette detection module is further configured to receive the reflected light of the laser on the cigarette and generate reflection reception data based on the reflected light; The control module is configured to obtain the reflection reception data output by the cigarette detection module after receiving the detection start signal, and determine that the cigarette detection channel is missing when the reflection reception data of the cigarette detection channel is less than or equal to a preset sensitivity; The user terminal is configured to send a request signal to the communication module; wherein the request signal includes at least one of a parameter setting signal, an information query signal, and a cigarette detection channel control signal; the parameter setting signal includes a sensitivity setting signal and a detection period setting signal; the information query signal includes a query signal for the number of cigarette detection matches, a query signal for the number of cigarette detection channel failures, and a query signal for missing cigarette detection results; the cigarette detection channel control signal includes a cigarette detection channel activation signal, a cigarette detection channel shutdown signal, and a cigarette detection channel test signal; The communication module is used to receive the request signal and send the request signal to the control module; The control module is used to process the request signal, determine the response signal, and send the response signal to the communication module; The communication module is used to receive the response signal and send it to the user terminal.

2. The system according to claim 1, wherein: The control module is further configured to determine that the cigarette detection channel is faulty when the missing cigarette detection channel detects missing cigarettes for a preset number of consecutive times.

3. The system according to claim 1, wherein: The cigarette storage missing detection system also includes a storage module; the storage module is used to store sensitivity, missing cigarette detection results, fault detection results and cigarette detection channel control records.

4. A method for detecting cigarette shortage in a cigarette bank, characterized in that: The method is performed by a cigarette storage lack detection system, which includes a control module, a cigarette detection module, a communication module, and a user terminal; wherein the cigarette detection module includes at least one cigarette detection channel; When the cigarette detection module detects a preset level signal, it sends a detection start signal to the control module and emits laser light towards the cigarettes in each cigarette detection channel; the preset level signal is used to indicate the start or end of the detection cycle; The cigarette detection module receives the reflected light of the laser on the cigarette and generates reflection reception data according to the reflected light; After receiving the detection start signal, the control module obtains the reflection reception data output by the cigarette detection module, and determines that the cigarette detection channel is missing when the reflection reception data of the cigarette detection channel is less than or equal to a preset sensitivity; The method further comprises: A request signal is sent to the communication module via a user terminal; wherein the request signal includes at least one of a parameter setting signal, an information query signal, and a cigarette detection channel control signal; the parameter setting signal includes a sensitivity setting signal and a detection period setting signal; the information query signal includes a query signal for the number of cigarette detection matches, a query signal for the number of cigarette detection channel failures, and a query signal for missing cigarette detection results; the cigarette detection channel control signal includes a cigarette detection channel on signal, a cigarette detection channel off signal, and a cigarette detection channel test signal; receiving a request signal through a communication module and sending the request signal to a control module; The control module processes the request signal, determines the response signal, and sends the response signal to the communication module; The communication module receives the response signal and sends the response signal to the user terminal.

5. The method according to claim 4, characterized in that After determining the missing branch detection result, the method further includes: When the missing cigarette detection results of the cigarette detection channel for a preset number of consecutive times are all missing cigarettes, the control module determines that the cigarette detection channel is faulty.

6. The method according to claim 4, characterized in that The cigarette bank lack detection system further includes a storage module; the method further includes: The storage module stores sensitivity, missing cigarette detection results, fault detection results and cigarette detection channel control records.

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