Energy-saving alarm control equipment for cold storage door

Abstract

The invention discloses cold storage door energy-saving alarm control equipment, and belongs to the technical field of cold storage door energy saving. According to the technical scheme, the system comprises a cold storage door state detection module, an image acquisition module, an OLED display module, a control output module, an infrared detection module and a data processing module, wherein the cold storage door state detection module, the OLED display module, the infrared detection module, the image acquisition module and the control output module are all connected with the data processing module. The energy-saving alarm control equipment for the cold storage door has the beneficial effects that comprehensive optimization of management of the cold storage door is realized through a series of precise hardware components and an intelligent software algorithm, the energy-saving efficiency is remarkably improved, the safety and user awareness are enhanced, and revolutionary change is brought to the cold-chain logistics industry.

Description

Technical Field

[0001] The present invention relates to the technical field of cold storage door energy saving, and in particular to an energy saving alarm control device applied to a cold storage door. Background Art

[0002] Cold storage, a key link in modern cold chain logistics, plays a vital role. Through a series of complex refrigeration systems and technical means, they artificially create a low-temperature storage space that is completely different from the external environment. This space requires not only a constant temperature but also strict control of factors such as humidity and air circulation to ensure that stored pharmaceuticals, fresh food, and chemical products are preserved in optimal condition, extending their shelf life and quality.

[0003] However, the environment inside cold storage is often relatively harsh, characterized by low temperatures, humidity, and the potential presence of hazardous gases. This poses a safety hazard to personnel entering and exiting the cold storage facility. Therefore, enhancing user safety awareness and strengthening the management of personnel entering and exiting the cold storage facility have become essential aspects of cold storage management. However, in practice, the frequent opening and closing of cold storage doors often results in significant loss of cold air, which not only increases the cold storage's energy consumption but also affects the stability of the internal environment.

[0004] Traditional mechanical cold storage doors have limitations in their design and use. They often lack intelligent control methods, making it difficult to flexibly adjust the opening and closing speed and force according to actual needs, making it difficult to effectively address the problem of cold air loss. Furthermore, existing cold storage door always-open alarms often suffer from issues such as inappropriate alarm timing and excessively long alarm durations. These inappropriate alarm settings not only fail to effectively and promptly remind users to close the door, but can also significantly reduce user sensitivity to the alarms due to frequent false alarms and prolonged alarms, leading to a lack of awareness of real safety hazards.

[0005] Therefore, the development of a cold storage door energy-saving alarm control device that integrates intelligent control, energy saving and consumption reduction, and efficient alarm is of great significance to improving the safety and efficiency of cold storage management. Summary of the Invention

[0006] In order to solve the technical problems existing in the prior art, the present invention provides a cold storage door energy-saving alarm control device. The developed control device has a simple structure and a reasonable layout, and can efficiently control the cold storage switch alarm system to achieve the purpose of energy saving and consumption reduction and improve safety.

[0007] To achieve the above object, the present invention provides the following technical solutions:

[0008] A cold storage door energy-saving alarm control device includes: a cold storage door status detection module, an image acquisition module, an OLED display module, a control output module, an infrared detection module, and a data processing module. The cold storage door status detection module, the OLED display module, the infrared detection module, the image acquisition module, and the control output module are all connected to the data processing module.

[0009] Furthermore, the cold storage door status detection module includes a film pressure sensor, which is installed on the cold storage door frame; the film pressure sensor is connected to the ADC channel of the processor module via a signal conditioning circuit.

[0010] Furthermore, it also includes a PLC module, a PLC control motor arranged on the cold storage door, driving the electric door, and the PLC module is connected to the cold storage status detection module and the PLC control motor respectively.

[0011] Furthermore, the image acquisition module is composed of a CMOS camera, and the OLED display module is composed of an OLED display for capturing image information of a target entity entering the cold storage through a cold storage door, and the COMS camera is installed above the OLED display.

[0012] Furthermore, the control output module is composed of speakers installed on both sides of the device, and the speakers are connected to the processor module TIM channel.

[0013] Furthermore, the OLED display module for displaying the information collected by the image acquisition module and the system operation status when the system is running is located in the middle of the device.

[0014] Furthermore, the infrared detection module is composed of an infrared sensor, the OUT pin of the infrared sensor is directly connected to the PC pin of the processor module through GPIO, and the infrared sensor for detecting whether there is a target entity in front of the cold storage door is installed under the OLED display.

[0015] Furthermore, the data processing module is connected to the image acquisition module, connected to the DCMI interface of the processor module through the DVP interface, and synchronously connected to the I2C1 bus for register configuration; the microcontroller model is STM32F407ZGT6, the CMOS camera model is OV2640, the buzzer model is FM-1209, and the thin film pressure sensor is Honeywell 160PC series. The thin film pressure sensor includes: a Wheatstone bridge sensing unit, a temperature compensation circuit, and a 0.5 mm thick flexible substrate.

[0016] Furthermore, in the data processing module, the alarm time is dynamically adjusted by the following formula:

[0017] T = T_base × K_size × K_time

[0018] Among them: T_base represents the base time, K_size represents the volume coefficient, and K_time represents the time period coefficient.

[0019] Furthermore, the data processing module calculates the door opening time and adopts a hierarchical alarm strategy module, including:

[0020] Level 1 warning: A short warning tone is triggered when the countdown is 10% left;

[0021] Second level alarm: starts continuous beeping after timeout;

[0022] Level 3 response: Send a door closing command to the remote log after a timeout of 60 seconds.

[0023] Beneficial effects of the present invention:

[0024] Compared with the prior art, the cold storage door energy-saving alarm control device of the present invention has the following technical features and beneficial effects:

[0025] (1) Significantly improve energy efficiency: By integrating a thin film pressure sensor on the cold storage door frame, the open and close status of the cold storage door is accurately detected. Combined with the PLC module to control the electric door, the loss of cold air caused by improper human operation is effectively reduced. This refined control not only reduces energy consumption, but also maintains the stability of the internal environment of the cold storage and extends the shelf life of stored items.

[0026] (2) Intelligent management and alarm system: The device's built-in camera and single-chip microcomputer work together to achieve intelligent recognition of target entities entering and leaving the cold storage. By distinguishing the size and type of people, goods, and transportation vehicles, the device can dynamically adjust the alarm strategy, quickly reminding people to close the door when entering or leaving, and providing a reasonable alarm time when handling large goods, avoiding unnecessary energy waste and a decline in user experience.

[0027] (3) Enhanced security and user awareness: The combination of infrared detection module and OLED display module not only improves the device's ability to instantly perceive targets in front of the door, but also effectively enhances the user's safety awareness and door-closing habits through intuitive screen display and graded alarm strategies (including short prompt sounds, continuous beeps and remote door-closing commands), thereby reducing safety hazards caused by forgetting to close the door.

[0028] (4) High flexibility and scalability: The control device of the present invention supports expanding the recognition categories by updating the training data set, which means that it can easily adapt to the needs of different cold storage scenarios. Whether it is traditional small goods or special large equipment, it can achieve accurate identification and management, improving the versatility and practicality of the equipment.

[0029] (5) Optimize the alarm mechanism and reduce false alarms and missed alarms: Through algorithms and data processing modules, the equipment can dynamically adjust the alarm time according to factors such as the volume of the target entity and the time period of entry and exit, effectively avoiding the common problems of unreasonable alarm timing and excessive alarm duration in traditional alarm devices. It not only ensures the timeliness of the alarm, but also reduces false alarms and missed alarms, thereby improving the overall efficiency of the system.

[0030] The cold storage door energy-saving alarm control device of the present invention realizes comprehensive optimization of cold storage door management through a series of precise hardware components and intelligent software algorithms. It not only significantly improves energy-saving efficiency, but also enhances safety and user awareness, bringing revolutionary changes to the cold chain logistics industry. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the present invention will be described in detail below in combination with the accompanying drawings and detailed 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 paying any creative work.

[0032] in:

[0033] Figure 1 This is a schematic diagram of the hardware module connection of the cold storage door energy-saving alarm control device of the present invention;

[0034] Figure 2 This is a schematic diagram of the installation of the cold storage door energy-saving alarm control device of the present invention;

[0035] Figure 3 This is a schematic diagram of the cold storage door energy-saving alarm control device of the present invention;

[0036] Figure 4 This is a schematic diagram of the software operation flow of the cold storage door energy-saving alarm control device system of the present invention;

[0037] Figure 5 This is a flow chart of dynamic time calculation of the cold storage door energy-saving alarm control device of the present invention;

[0038] Figure 6 This is a schematic diagram of the signal conditioning circuit of the thin film pressure sensor of the cold storage door energy-saving alarm control device of the present invention;

[0039] Figure 7 This is a flow chart of the cold storage door energy-saving alarm control device PLC controlling the motor to drive the electric door;

[0040] Figure 8 This is a schematic diagram of the buzzer driving circuit of the cold storage door energy-saving alarm control device of the present invention;

[0041] Figure 9 This is a schematic diagram of the infrared sensor interface circuit connection of the cold storage door energy-saving alarm control device of the present invention;

[0042] Figure 10 This is a schematic diagram of the camera interface connection of the cold storage door energy-saving alarm control device of the present invention;

[0043] Figure 11 This is a schematic diagram of the overall circuit connection of the cold storage door energy-saving alarm control device of the present invention.

[0044] Among them: 1-cold storage door energy-saving alarm control device; 2-cold storage door frame; 3-thin film pressure sensor; 4-CMOS camera; 5-OLED display; 6-speaker; 7-infrared sensor. DETAILED DESCRIPTION

[0045] In order to make the purpose, technical solutions and advantages of the present invention more clear, the present invention is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not intended to limit the present invention. Figure 1-11 Further explanation of the cold storage door energy-saving alarm control equipment.

[0046] Example 1

[0047] The technical solution adopted by the present invention to solve its technical problems is: a cold storage door energy-saving alarm control device, including a cold storage door status detection module, an image acquisition module, an OLED display module, a control output module, an infrared detection module, and a data processing module. The cold storage door status detection module, OLED display module, infrared detection module, image acquisition module and control output module are all connected to the data processing module. According to the image information collected by the image acquisition module, the required opening time of the cold storage door at a specific time is calculated, and a graded sound and light alarm device is used to remind the user to close the cold storage door in time to reduce excessive outflow of cold air.

[0048] The image acquisition module is composed of a CMOS camera, which is installed above the OLED display and is used to capture image information of the target entity entering the cold storage through the cold storage door.

[0049] The data processing module includes a dynamic alarm time calculation method, which dynamically adjusts the alarm time using the following formula:

[0050] T = T_base × K_size × K_time

[0051] Where: T_base: base time (set by personnel / cargo classification) K_size: volume coefficient (calculated through image contour analysis) K_time: time period coefficient (dynamically adjusted based on historical data)

[0052] The cold storage door status detection module is connected to the processor module ADC channel through a thin film pressure sensor installed on the cold storage door frame via a signal conditioning circuit. The thin film pressure sensor is a Honeywell 160PC series (model: 160PC-50N). Figure 6 The following diagram shows the signal conditioning circuit for a thin-film pressure sensor. It includes a Honeywell 160PC bridge pressure sensor, an AD623 instrumentation amplifier, a differential amplifier circuit, an RC filter circuit (R = 10kΩ, C = 100nF), and an LM358 voltage follower connected to the ADC1 channel of the STM32F407ZGT6. The ADC value detected by the sensor during door opening and closing is used to distinguish the cold storage door's open or closed state. This device has a PLC interface. For PLC-controlled motor-driven electric doors, the cold storage state detection module can be connected to the PLC module that controls the cold storage door's opening and closing. Figure 7 This is the flow chart of the PLC controlling the motor to drive the electric door. The PLC module controls relay 1 through the digital output point Q0.0. Relay 1 controls the contactor KM1 coil to drive the three-phase asynchronous motor. The motor drives the door body through the worm gear reducer. The door position signal is fed back to I0.0 / I0.1 of the PLC through the travel switch SQ1 / SQ2, thereby detecting and controlling the status of the cold storage door.

[0053] The control output module is composed of a loudspeaker and an OLED display group installed on both sides of the device to form a graded sound and light alarm device. It is connected to the TIM channel of the processor module to form a driving buzzer control circuit, which adopts an optocoupler isolation design. Figure 8 This is the buzzer driver circuit diagram: the optocoupler isolation circuit uses PC817 for signal isolation, the Darlington diode TIP122 drives the FM-1209 buzzer, the freewheeling diode IN4001 protects the circuit, the processor TIM2_CH1 of the STM32F407 outputs a PWM signal, and the volume is adjusted by potentiometer RW1. Based on the door opening time calculated by the data processor module, a hierarchical alarm strategy module is used, including:

[0054] Level 1 warning: A short warning tone is triggered when the countdown is 10% left

[0055] Secondary alarm: continuous beeping after timeout

[0056] Level 3 response: Send a door closing command to the remote log after a timeout of 60 seconds.

[0057] The OLED display module is located in the middle of the device and is used to display the information collected by the image acquisition module and the system operation status when the system is running.

[0058] The infrared detection module is composed of an infrared sensor. The OUT pin of the infrared sensor is directly connected to the PC pin of the processor module through GPIO to form an interrupt wake-up channel. Figure 9 This is a schematic diagram of the infrared sensor interface circuit connection, including an HC-SR501 infrared sensor. Its OUT pin is connected to PC13 of the STM32F407, using a pull-up resistor R1 = 10kΩ and a capacitor C1 = 100nF. An anti-interference interrupt is configured by triggering the external interrupt EXTI13 via a falling edge. The infrared sensor is installed below the OLED display to detect the presence of a target entity in front of the cold storage door.

[0059] The data processing module is connected to the image acquisition module, connected to the DCMI interface of the processor module through the DVP interface, and synchronously connected to the I2C1 bus for register configuration. Figure 10 This is a schematic diagram of the camera interface connection, including: a CMOS camera OV2640 connected to the DCMI of the STM32F407 via the DVP interface, where the I2C1 bus (SCL / SDA) is used for register configuration, and the 3.3V power supply is filtered by LC (L=10μH, C=100μF). The image information captured by the CMOS camera is transmitted to the data acquisition module. After grayscale processing is performed on the image through an edge detection scheme, the Canny operator is used to detect edges, and the maximum contour is extracted through connected domain analysis. Its minimum circumscribed rectangular area is calculated. Based on the time when the target entity enters the cold storage and opens the cold storage, the alarm duration required for each target entity to open the cold storage at different times is calculated.

[0060] Furthermore, when the infrared detection module detects a target entity in front of the cold storage door for 3 seconds, the device is awakened and the system starts working. When no target entity is detected, the system is in a dormant state.

[0061] Furthermore, the hierarchical alarm strategy module includes: the first alarm volume is 60dB, which lasts for 10 seconds; the second alarm volume is 75dB, which lasts until the door is closed; and the alarm frequency increases step by step with the timeout time (500Hz→1500Hz).

[0062] The present invention provides a cold storage door energy-saving alarm control device, including a single chip microcomputer, a camera, an alarm, an infrared detection device, and a cold storage door switch detection device. The overall circuit connection of the device is as follows Figure 11As shown, the microcontroller uses an STM32F407ZGT6, which utilizes an ARM Cortex-M4 core. The camera uses an OV2640 with 2 million pixels and supports a DVP interface. The alarm uses an FM-1209 buzzer. The infrared detection device is an HC-SR501. The display module is an SH1106 OLED display. The pressure sensor is a Honeywell 160P, encapsulated in a fully sealed epoxy resin package and capable of stable operation in ambient temperatures of -40°C to +50°C, meeting the cold storage's long-term low-temperature operation requirements. The microcontroller is connected to the camera, the alarm, and the camera. The camera captures the target entity about to enter the cold storage and transmits the captured image information to the microcontroller, which then identifies and distinguishes the size of the captured target entity. It can calculate the alarm timing based on the different target entities (including people, goods, and transportation vehicles) entering and exiting the cold storage, thus distinguishing between different target entities, such as goods or individuals entering and leaving the cold storage. For individuals and those with less frequent entry and exit, the system can quickly remind users to close the door when the cold storage is opened, enhancing their awareness of door closing. It supports expanding recognition categories (such as forklifts and pallets) through updated training datasets to adapt to different cold storage scenarios. For scenarios where goods and medium-sized cargo require the door to be open for extended periods, the device can issue an alarm at a reasonable time.

[0063] Example 2

[0064] As a new embodiment or a supplement to embodiment 1.

[0065] like Figure 1-Figure 3 As shown, a cold storage door energy-saving alarm control device includes a cold storage door status detection module, an image acquisition module, an OLED display module, a control output module, an infrared detection module, and a data processing module. The cold storage door status detection module, OLED display module, infrared detection module, image acquisition module, and control output module are all connected to the data processing module and installed on the side of the cold storage door. A COMS camera 4 is installed above the OLED display 5 and is connected to the processor in the data processing module to capture image information of the cold storage door entering the target entity.

[0066] The pressure of the film installed on the cold storage door frame 2 is connected to the processor module's ADC channel via a signal conditioning circuit. The ADC value detected by the sensor during door opening and closing determines the door's open / close status. This device includes a PLC interface. For PLC-controlled motors driving electric doors, the cold storage status detection module can be connected to the PLC module that controls the cold storage door's opening and closing to detect changes in the door's status. An OLED display 5 is installed in the center of the device to display information collected by the image acquisition module and the system's operating status.

[0067] Speakers 6 are provided on both sides of the device, and together with the OLED display 5 groups form a graded sound and light alarm device. The speakers 6 are connected to the TIM channel of the processor module to form a driving buzzer control circuit. According to the time calculated by the data processor module, a graded alarm strategy module is adopted, which includes:

[0068] Level 1 warning: A short warning tone is triggered when the countdown is 10% left

[0069] Secondary alarm: continuous beeping after timeout

[0070] Level 3 response: Send a door closing command to the remote log after a timeout of 60 seconds.

[0071] The OUT pin of the infrared sensor 7 is directly connected to the PC pin of the processor module through GPIO to form an interrupt wake-up channel. The infrared sensor 7 is installed below the OLED display 5 to detect whether there is a target entity in front of the cold storage door.

[0072] Preferably, the hierarchical alarm strategy module includes: the first alarm volume is 60dB, which lasts for 10 seconds; the second alarm volume is 75dB, which lasts until the door is closed; and the alarm frequency increases stepwise with the timeout time (500Hz→1500Hz).

[0073] refer to Figure 4 System software flow chart: When the infrared detection module 7 detects a target entity in front of the cold storage door for 3 seconds, the device is awakened and the system starts working. When no target entity is detected, the system is in a dormant state.

[0074] When the system is working, start the CMOS camera 4 and adjust the focus. The image information captured by the CMOS camera 4 is transmitted to the data acquisition module. The target entity entering the cold storage is analyzed using an edge detection solution. The RGB image is converted into a grayscale image, and a Gaussian filter is used to eliminate noise. The Canny algorithm is used to detect edges in pixels. The contour search function is used to extract the maximum connected domain and calculate the length and width of its circumscribed rectangle. Combined with the formula:

[0075] Actual volume = k × pixel area × depth compensation coefficient

[0076] (where k is the camera calibration constant) to estimate the object's volume. The actual physical dimensions are calculated based on the bounding box pixel size and camera calibration parameters. The object type (personnel / cargo) and volume are then combined with the preset door opening time baseline value T_base (see Table 1). The alarm trigger time is dynamically adjusted, and the calculated door opening time is written to the device's countdown register.

[0077] Table 1

[0078] Object Type <![CDATA[Volume range (m 2 )]]> Base time (seconds) personnel 0.1-0.5 15 Small cargo 0.5-2.0 30 Large cargo 2.0-5.0 60

[0079] The processor module reads the data from the cold storage door status detection module:

[0080] When the value of pressure sensor 3 is less than 10N, it is determined that the door is not closed tightly.

[0081] When the value of pressure sensor 3 is ≥50N, the door is determined to be locked.

[0082] If the cold storage door is not detected to be opened, the system will continue to read the cold storage door status until the object disappears from the control device; if the cold storage door is detected to be opened, the countdown in the register will be enabled, and the hierarchical alarm strategy module will be adopted. If the target entity closes the cold storage door before the countdown ends, the system will stop the countdown and turn off the alarm; after the timeout, the OLED display 5 and the speaker 6 will be driven to continuously beep and alarm, reminding the user to close the cold storage door in time. After a timeout of 60 seconds, the data will be uploaded to the remote log, and finally the door opening event (time, object type, alarm duration) will be recorded to the SD card.

[0083] The emergence of this control device can greatly reduce the loss of cold air in traditional mechanical cold storage, thereby reducing the energy consumption of the cold storage and achieving energy-saving effects. At the same time, reasonable alarms can improve the safety awareness of users.

[0084] Example 3

[0085] like Figure 5 As shown, the data processing module runs the object classification algorithm, including the following steps:

[0086] Step 1: Preprocess the image captured by the CMOS camera 4: Convert the RGB image captured by the CMOS camera 4 into a grayscale image and perform Gaussian filtering to reduce noise. Use the Canny operator to extract the object contour, calculate the Hu moment invariant feature of the contour, and use the pre-trained support vector machine model to distinguish the categories:

[0087] Category 1: Personnel (profile area < 0.5m 2 , aspect ratio>0.6)

[0088] Category 2: Small cargo (0.5m 2 ≤Area<2m2 )

[0089] Category 3: Medium and large cargo (area ≥ 2m 2 )

[0090] Step 2: Calculate the target volume coefficient. The calculation method of K_size is:

[0091] K_size=S obj / S Base

[0092] Where: S obj The target projection area obtained by image analysis, S base The base area preset by the system.

[0093] The calculation method of the time period coefficient K_time is:

[0094] Peak hours (08:00-11:00, 14:00-16:00): K_time = 0.7

[0095] Normal time: K_time = 1.0

[0096] Nighttime (22:00-06:00): K_time = 1.5

[0097] Step 3: Calculate the dynamic time through the processor module and dynamically adjust the alarm time using the following formula:

[0098] T = T_base × K_size × K_time

[0099] Among them: T_base: base time (set by personnel / cargo classification), K_size: volume coefficient (calculated through image contour analysis), K_time: time period coefficient (dynamically adjusted based on historical data). Finally, the calculation result is written into the countdown register.

[0100] Example 4

[0101] A cold storage door energy-saving alarm control device includes a cold storage door status detection module, an image acquisition module, an OLED display module, a control output module, an infrared detection module, and a data processing module. The cold storage door status detection module, OLED display module, infrared detection module, image acquisition module, and control output module are all connected to the data processing module. Based on the image information collected by the image acquisition module, the required opening time of the cold storage door for different target entities at a specific time is calculated, and a graded sound and light alarm device is used to remind the user to close the cold storage door in time to reduce excessive outflow of cold air.

[0102] The image acquisition module is composed of a CMOS camera, which is installed above the OLED display and is used to capture image information of the target entity entering the cold storage through the cold storage door.

[0103] The data processing module includes a dynamic alarm time calculation method, which dynamically adjusts the alarm time using the following formula:

[0104] T = T_base × K_size × K_time

[0105] Where: T_base: base time (set by personnel / cargo classification) K_size: volume coefficient (calculated through image contour analysis) K_time: time period coefficient (dynamically adjusted based on historical data)

[0106] The cold storage door status detection module uses the pressure of a membrane installed on the cold storage door frame to connect to the processor module's ADC channel via a signal conditioning circuit. The module distinguishes the door's open or closed state based on the ADC value detected by the sensor when the door is opened or closed. This device has a PLC interface. For PLC-controlled motor-driven electric doors, the cold storage door status detection module can be connected to the PLC module that controls the cold storage door's opening and closing to detect changes in the door's state.

[0107] The control output module is composed of a loudspeaker and an OLED display group installed on both sides of the device to form a graded sound and light alarm device. It is connected to the TIM channel of the processor module to form a driving buzzer control circuit. It adopts an optical coupling isolation design and adopts a graded alarm strategy module based on the door opening time calculated by the data processor module. It includes:

[0108] Level 1 warning: A short warning tone is triggered when the countdown is 10% left

[0109] Secondary alarm: continuous beeping after timeout

[0110] Level 3 response: Send a door closing command to the remote log after a timeout of 60 seconds.

[0111] The OLED display module is located in the middle of the device and is used to display the information collected by the image acquisition module and the system operation status when the system is running.

[0112] The infrared detection module consists of an infrared sensor. The OUT pin of the infrared sensor is directly connected to the PC pin of the processor module through GPIO to form an interrupt wake-up channel. The infrared sensor is installed under the OLED display to detect whether there is a target entity in front of the cold storage door.

[0113] The data processing module is connected to the image acquisition module, connected to the DCMI interface of the processor module through the DVP interface, and synchronously accessed to the I2C1 bus for register configuration. The image information captured by the CMOS camera is transmitted to the data acquisition module. After grayscale processing of the image through the edge detection scheme, the Canny operator is used to detect the edge, and the maximum contour is extracted through connected domain analysis. Its minimum circumscribed rectangular area is calculated. According to the time when the target entity entering the cold storage opens the cold storage, the alarm duration required for each target entity to open the cold storage at different times is calculated.

[0114] When the infrared detection module detects a target entity in front of the cold storage door for 3 seconds, the device is awakened and the system starts working. When no target entity is detected, the system is in a dormant state.

[0115] The hierarchical alarm strategy module includes: the first alarm volume is 60dB, which lasts for 10 seconds; the second alarm volume is 75dB, which lasts until the door is closed; and the alarm frequency increases step by step with the timeout time (500Hz→1500Hz).

[0116] The cold storage door energy-saving alarm control device of the present invention is based on the collaborative work of multiple modules. Its core lies in identifying the target entity entering and leaving the cold storage through the image acquisition module, combining its volume, type and door opening period, dynamically calculating the reasonable door opening time through the data processing module, and reminding the user to close the door in time through the graded sound and light alarm device to reduce the loss of cold air and achieve the purpose of energy saving.

[0117] Image acquisition and recognition: A CMOS camera captures images of the target entity in front of the cold storage door and transmits them to the processor module's DCMI interface via the DVP interface. The data processing module preprocesses the image, including grayscale conversion, edge detection (using the Canny operator), and connected domain analysis. It extracts the largest contour and calculates its minimum bounding rectangle area, which serves as the basis for the volume coefficient.

[0118] Cold storage door status monitoring: The thin film pressure sensor is installed on the cold storage door frame and connected to the ADC channel of the processor module through the signal conditioning circuit to monitor the opening and closing status of the cold storage door in real time, providing basic data for the calculation of dynamic alarm time.

[0119] Dynamic alarm time calculation: Based on the target entity's volume (derived through image analysis), type (personnel / cargo classification), and door opening period (dynamically adjusted based on historical data), the data processing module calculates the reasonable door opening time T using the formula T = T_base × K_size × K_time.

[0120] A graded alarm strategy is triggered when the actual door opening time exceeds the calculated reasonable door opening time. The first-level warning emits a short beep when 10% of the countdown remains. If the door is not closed before the timeout, the second-level alarm is activated with a continuous beep. After 60 seconds, a close command is sent to the remote log and the PLC module may be used to control the electric door to automatically close (if the device is equipped with this function).

[0121] Infrared detection and sleep mechanism: The infrared sensor detects whether there is a target entity in front of the cold storage door. When the target is detected for 3 seconds, the system wakes up and starts working; when no target is detected, the system enters sleep mode to reduce energy consumption.

[0122] Working process

[0123] System initialization: After the device is started, each module is initialized, including camera calibration, sensor testing, alarm device pre-inspection, etc.

[0124] Standby state: The infrared sensor continuously monitors the situation in front of the cold storage door, and the system is in low-power standby state.

[0125] Target detection and recognition: When the infrared sensor detects a target entity for 3 seconds, the system is awakened, the CMOS camera starts capturing images, and the data processing module performs image recognition and volume calculation.

[0126] Door opening time calculation: Based on the identified target entity type, volume and current time period, the data processing module calculates the reasonable door opening time.

[0127] Alarm monitoring: The actual door opening time is compared with the calculated reasonable door opening time. If it exceeds the time limit, the hierarchical alarm strategy will be executed.

[0128] Door closing response: If the user does not close the door within the specified time, the system will sound an alarm through the speaker and send a door closing command to the remote log after a timeout of 60 seconds (or control the electric door to close automatically, if the device supports it).

[0129] Sleep recovery: After the target entity leaves, the infrared sensor no longer detects the target, and the system enters sleep mode and waits for the next wake-up.

[0130] The present invention discloses a cold storage door energy-saving alarm control device, comprising: a cold storage door status detection module, an image acquisition module, an OLED display module, a control output module, an infrared detection module, and a data processing module. The image acquisition module collects information about people entering and leaving the cold storage, photographs the target entities entering and leaving the cold storage, and the data processing module classifies the photographed target entities, calculates the time required for people or different goods to enter and exit the cold storage at different time periods, and triggers an audible and visual alarm after the required door opening time is reached through the control output module, prompting the user to close the door in time to reduce the outflow of cold air, thereby significantly reducing the cold storage's energy consumption. At the same time, the present application can prevent excessive and unreasonable alarms from reducing users' safety awareness.

[0131] The above description is only a preferred specific embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any technician familiar with the technical field, within the technical scope disclosed by the present invention, who makes equivalent replacements or changes based on the technical solution and inventive concept of the present invention, should be covered by the scope of protection of the present invention.

Claims

1. A cold storage door energy-saving alarm control device, characterized in that: include: The cold storage door status detection module, image acquisition module, OLED display module, control output module, infrared detection module, and data processing module are all connected to the data processing module.

2. The cold storage door energy-saving alarm control device according to claim 1, characterized in that: The cold storage door state detection module comprises a thin film pressure sensor (3), which is mounted on a cold storage door frame (2); the thin film pressure sensor (3) is connected to an ADC channel of a processor module via a signal conditioning circuit.

3. The cold storage door energy-saving alarm control device according to claim 2, characterized in that: It also includes a PLC module, a PLC control motor arranged on the cold storage door, driving the electric door, and the PLC module is connected to the cold storage status detection module and the PLC control motor respectively.

4. The cold storage door energy-saving alarm control device according to claim 1, characterized in that: The image acquisition module is composed of a CMOS camera, the OLED display module is composed of an OLED display for capturing image information of a target entity entering the cold storage through a cold storage door, and the COMS camera (4) is installed above the OLED display (5).

5. The cold storage door energy-saving alarm control device according to claim 1, characterized in that: The control output module is composed of speakers (6) installed on both sides of the device, and the speakers (6) are connected to the channels of the processor module TIM.

6. The cold storage door energy-saving alarm control device according to claim 1, characterized in that: The OLED display module, which is used to display the information collected by the image acquisition module and the system operation status when the system is running, is located in the middle of the device.

7. The cold storage door energy-saving alarm control device according to claim 1, characterized in that: The infrared detection module is composed of an infrared sensor (7), the OUT pin of the infrared sensor (7) is directly connected to the PC pin of the processor module via GPIO, and the infrared sensor for detecting whether there is a target entity in front of the cold storage door is installed below the OLED display.

8. The cold storage door energy-saving alarm control device according to claim 1, characterized in that: The data processing module is connected to the image acquisition module, connected to the DCMI interface of the processor module through the DVP interface, and synchronously connected to the I2C1 bus for register configuration; The single-chip microcomputer model is STM32F407ZGT6, the CMOS camera model is OV2640, the buzzer model is FM-1209, the thin film pressure sensor is Honeywell 160PC series, and the thin film pressure sensor includes: a Wheatstone bridge sensing unit, a temperature compensation circuit, and a 0.5 mm thick flexible substrate.

9. The cold storage door energy-saving alarm control device according to any one of claims 1 to 8, characterized in that: In the data processing module, the alarm time is dynamically adjusted by the following formula: T = T_base × K_size × K_time Among them: T_base represents the base time, K_size represents the volume coefficient, and K_time represents the time period coefficient.

10. The cold storage door energy-saving alarm control device according to any one of claims 1 to 8, characterized in that: The data processing module calculates the door opening time and adopts a hierarchical alarm strategy module, including: Level 1 warning: A short warning tone is triggered when the countdown is 10% left; Second level alarm: starts continuous beeping after timeout; Level 3 response: Send a door closing command to the remote log after a timeout of 60 seconds.

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