Box body monitoring device and cinema screen body
The detection module, composed of an optocoupler and a resistor, of the enclosure monitoring device detects the enclosure status of the cinema screen, solving the problem that each individual screen needs to be equipped with a battery in the existing technology, and realizing low-cost and efficient detection and maintenance.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- APPOTRONICS CORP LTD
- Filing Date
- 2025-04-10
- Publication Date
- 2026-04-17
AI Technical Summary
In existing technologies, cinema screens require 24-hour continuous monitoring, and each screen unit needs to be equipped with a battery, resulting in high costs and time-consuming and labor-intensive maintenance.
The enclosure monitoring device uses a detection module composed of an optocoupler and a resistor to detect the opening and closing status of the enclosure. It only supplies power to the detection module and does not require a separate battery for each enclosure. Combined with a positioning module and a microprocessor, it can locate abnormal enclosures.
It reduces maintenance costs, improves detection efficiency and accuracy, enables quick location and maintenance of abnormal enclosures, and reduces battery usage frequency and maintenance workload.
Smart Images
Figure CN224137876U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the field of LED display technology, and more specifically, to a cabinet monitoring device and a cinema screen. Background Technology
[0002] Domestic and international cinemas require the protection of digital film copyrights, necessitating 24-hour continuous monitoring of cinema screens. The entire cinema screen is composed of hundreds or thousands of individual screen units, requiring monitoring of each individual screen unit. This solution involves installing a monitoring device on each individual screen unit and adding batteries to each individual screen unit, which is costly and time-consuming to maintain. Utility Model Content
[0003] This application proposes a cabinet monitoring device and a cinema screen to improve the above-mentioned defects.
[0004] In a first aspect, this application provides a cabinet monitoring device applied to a cinema screen, the cinema screen including a first power supply and N cabinets, where N is a positive integer. The cabinet monitoring device includes: multiple switching components, each of which is installed in a corresponding cabinet, wherein each cabinet corresponds to at least one switching component; a detection module, the detection module including an optocoupler, a first resistor, and a second resistor; a first end of the first resistor is connected to the first power supply, the second end of the first resistor is connected to the positive input terminal of the optocoupler, the negative input terminal of the optocoupler is connected to the first end of each switching component, and the second end of each switching component is grounded; a first end of the second resistor is connected to the first power supply, the second end of the second resistor is connected to the positive output terminal of the optocoupler, the negative output terminal of the optocoupler is grounded, and the positive output terminal of the optocoupler is used to output a first detection signal; wherein, when the cabinet is in an open state, the first end of the switching component corresponding to the cabinet is connected to the second end of the switching component, and when the cabinet is in a closed state, the first end of the switching component corresponding to the cabinet is disconnected from the second end of the switching component.
[0005] Optionally, in one possible implementation, the cinema screen further includes a second power supply, and the cabinet monitoring device further includes: N positioning modules, each positioning module corresponding to each cabinet, each positioning module including a third resistor, the first end of each third resistor being used to connect to the second power supply, the second end of each third resistor being connected to the third end of the corresponding switch assembly, and the second end of each third resistor being used to output a second detection signal; wherein, when the cabinet is in the open state, the third end of the switch assembly corresponding to the cabinet is disconnected from the second end of the switch assembly, and when the cabinet is in the closed state, the third end of the switch assembly corresponding to the cabinet is connected to the second end of the switch assembly.
[0006] Optionally, in one possible implementation, each enclosure is equipped with a switch assembly, each positioning module includes a third resistor, and the enclosure monitoring device further includes: N microprocessors, each microprocessor corresponding to each positioning module, each microprocessor being connected to the second end of the third resistor of the corresponding positioning module, and each microprocessor being used to transmit the corresponding second detection signal to the user terminal.
[0007] Optionally, in one possible implementation, each enclosure is equipped with two switch assemblies, each positioning module includes two third resistors, and the enclosure monitoring device further includes: N microprocessors, each microprocessor corresponding to each positioning module, each microprocessor being connected to the second end of the two third resistors of the corresponding positioning module, and each microprocessor being used to transmit the corresponding second detection signal to the user terminal.
[0008] Optionally, in one possible implementation, the detection module further includes a fourth resistor; each positioning module is installed in a corresponding housing, and each positioning module further includes a first terminal and a second terminal connected to each other. Multiple positioning modules are connected end-to-end through the first terminal and the second terminal. The first end of the fourth resistor is used to connect to the first power supply, the second end of the fourth resistor is connected to the first terminal of the first positioning module, and the second terminal of the last positioning module is grounded. The second end of the fourth resistor is used to output a third detection signal. If the distance between two adjacent housings exceeds a preset range, the third detection signal is a high-level signal; if the distance between any two adjacent housings does not exceed the preset range, the third detection signal is a low-level signal.
[0009] Optionally, in one possible implementation, the switching assembly includes two identical switching elements, namely a first switching element and a second switching element; the first end of the first switching element and the first end of the second switching element are both connected to the negative input terminal of the optocoupler, the second end of the first switching element is connected to the third end of the second switching element, the third end of the first switching element is connected to the second end of a corresponding third resistor, and the second end of the second switching element is grounded; when the enclosure is in the open state, the third end of the first switching element corresponding to the enclosure is disconnected from the second end of the first switching element, the first end of the first switching element is connected to the second end of the first switching element, the third end of the second switching element corresponding to the enclosure is disconnected from the second end of the second switching element, and the first end of the second switching element is connected to the second end of the second switching element; when the enclosure is in the closed state, the third end of the first switching element corresponding to the enclosure is connected to the second end of the first switching element, the first end of the first switching element is disconnected from the second end of the first switching element, the third end of the second switching element corresponding to the enclosure is connected to the second end of the second switching element, and the first end of the second switching element is disconnected from the second end of the second switching element.
[0010] Optionally, in one possible implementation, the enclosure monitoring device further includes a signal transmitter connected to the positive output terminal of the optocoupler, for sending the first detection signal to the server.
[0011] Secondly, this application provides a cinema screen, including: a first power supply, a second power supply, N cabinets and the aforementioned cabinet monitoring device, where N is a positive integer; the first power supply is connected to the first end of the first resistor and the first end of the second resistor respectively, and the second power supply is connected to the first end of each of the third resistors.
[0012] Optionally, in one possible implementation, the cinema screen further includes a diode, the positive terminal of which is connected to the first power supply, and the negative terminal of which is connected to the first end of the first resistor and the first end of the second resistor, respectively.
[0013] Optionally, in one possible implementation, the first power source is a battery pack.
[0014] This application provides a cabinet monitoring device applied to a cinema screen. The cinema screen includes a first power supply and N cabinets, where N is a positive integer. The cabinet monitoring device includes: multiple switching components, each of which is installed in a corresponding cabinet, wherein each cabinet corresponds to at least one switching component; a detection module, which includes an optocoupler, a first resistor, and a second resistor; a first end of the first resistor is connected to the first power supply, a second end of the first resistor is connected to the positive input terminal of the optocoupler, the negative input terminal of the optocoupler is connected to the first end of each switching component, and the second end of each switching component is grounded; a first end of the second resistor is connected to the first power supply, a second end of the second resistor is connected to the positive output terminal of the optocoupler, the negative output terminal of the optocoupler is grounded, and the positive output terminal of the optocoupler is used to output a first detection signal; wherein, when the cabinet is in an open state, the first end of the corresponding switching component is connected to the second end of the switching component, and when the cabinet is in a closed state, the first end of the corresponding switching component is disconnected from the second end of the switching component.
[0015] Compared to the method of installing batteries in each enclosure to monitor each enclosure, the enclosure monitoring device provided in this application can power only the detection module, eliminating the need to install batteries in each enclosure separately, thus reducing maintenance costs.
[0016] Other features and advantages of this application will be set forth in the following description and will be apparent in part from the description or may be learned by practicing the application. The objectives and other advantages of this application may be realized and obtained by means of the structures particularly pointed out in the written description, claims, and drawings. Attached Figure Description
[0017] To more clearly illustrate the technical solutions in the embodiments of this application, the accompanying drawings used in the description of the embodiments will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0018] Figure 1 A schematic diagram of the enclosure monitoring device provided in an embodiment of this application is shown;
[0019] Figure 2 A schematic diagram of the structure of a housing monitoring device provided in another embodiment of this application is shown;
[0020] Figure 3 A schematic diagram of the structure of a housing monitoring device according to another embodiment of this application is shown;
[0021] Figure 4 A schematic diagram of the structure of a housing monitoring device according to another embodiment of this application is shown;
[0022] Figure 5 A schematic diagram of the structure of the switching assembly provided in an embodiment of this application is shown;
[0023] Figure 6 A schematic diagram of the structure of a micro switch provided in another embodiment of this application is shown.
[0024] Explanation of reference numerals in the attached figures:
[0025] 11. Switch assembly; 12. Detection module; 13. Positioning module; 111. First end of switch assembly; 112. Second end of switch assembly; 113. Third end of switch assembly; 114. First end of first switching element; 115. Second end of first switching element; 116. Third end of first switching element; 117. First end of second switching element; 118. Second end of second switching element; 119. Third end of second switching element; 121. Optocoupler; 122. First resistor; 123. Second resistor; 124. Fourth resistor; 125. Diode; 131. Third resistor. Detailed Implementation
[0026] To enable those skilled in the art to better understand the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of the present application, and not all of them. The components of the embodiments of the present application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely represents selected embodiments of the present application. All other embodiments obtained by those skilled in the art based on the embodiments of the present application without inventive effort are within the scope of protection of the present application.
[0027] It should be noted that similar reference numerals and letters in the following figures indicate similar items; therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. Furthermore, in the description of this application, terms such as "first," "second," etc., are used only to distinguish descriptions and should not be construed as indicating or implying relative importance.
[0028] Domestic and international cinemas require the protection of digital film copyrights, necessitating 24-hour continuous monitoring of cinema screens. The entire cinema screen is composed of hundreds or thousands of individual screen units, requiring monitoring of each individual screen unit. This solution involves installing a monitoring device on each individual screen unit and adding batteries to each individual screen unit, which is costly and time-consuming to maintain.
[0029] Therefore, in this application embodiment, a cabinet monitoring device and a cinema screen are provided to solve or partially solve the above problems.
[0030] Please see Figure 1 This document illustrates a schematic diagram of a cabinet monitoring device provided in an embodiment of this application, applied to a cinema screen. The cinema screen includes a first power supply VCC1 and N cabinets, where N is a positive integer. The cabinet monitoring device includes:
[0031] A plurality of switch assemblies 11, each of the switch assemblies 11 being mounted on a corresponding enclosure, wherein each enclosure corresponds to at least one switch assembly 11.
[0032] The detection module 12 includes an optocoupler 121, a first resistor 122, and a second resistor 123.
[0033] The first end of the first resistor 122 is used to connect to the first power supply, the second end of the first resistor 122 is connected to the positive input terminal of the optocoupler 121, the negative input terminal of the optocoupler 121 is connected to the first end of each of the switching components 11, and the second end of each of the switching components 11 is grounded.
[0034] The first end of the second resistor 123 is used to connect to the first power supply, the second end of the second resistor 123 is connected to the positive output terminal of the optocoupler 121, the negative output terminal of the optocoupler 121 is grounded, and the positive output terminal of the optocoupler 121 is used to output the first detection signal OUT1.
[0035] When the enclosure is in the open state, the first end of the switch assembly 11 corresponding to the enclosure is connected to the second end of the switch assembly 11; when the enclosure is in the closed state, the first end of the switch assembly 11 corresponding to the enclosure is disconnected from the second end of the switch assembly 11.
[0036] It should be noted that the enclosure is the aforementioned single panel, and the switch assembly 11 is installed in the enclosure to detect the opening and closing status of the enclosure door. When the enclosure door is open, the switch assembly 11 is in the first state, that is, the first end and the second end of the same switch assembly 11 installed on the enclosure are electrically connected. When the enclosure door is closed, the switch assembly 11 is in the second state, that is, the first end and the second end of the same switch assembly 11 installed on the enclosure are disconnected. The switch assembly 11 can be installed on the enclosure or on the enclosure door, and no specific limitation is made here.
[0037] In one optional embodiment, when both the first end of the first resistor and the first end of the second resistor are connected to the first power supply, the switching assembly on each cabinet is in a working state. When the door of any cabinet is pried open by external force, the first and second ends of the switching assembly corresponding to the pried-open cabinet are connected, thus the optocoupler is turned on, and the first detection signal is a low-level signal. When the doors of each cabinet of the cinema screen are not pried open, the first and second ends of the switching assembly corresponding to each cabinet are disconnected, the optocoupler is not working, and the first detection signal is a high-level signal. Therefore, the opening and closing status of the cabinet can be detected based on the first detection signal. The detection module can be set at the bottom of the cinema screen, and each switching assembly can be installed on the corresponding cabinet, eliminating the need to install a battery for each cabinet and saving costs.
[0038] Compared to the method of installing batteries in each enclosure to monitor each enclosure, the enclosure monitoring device provided in this application can power only the detection module, eliminating the need to install batteries in each enclosure separately, thus reducing maintenance costs.
[0039] In one alternative embodiment, please refer to Figure 2 The cinema screen also includes a second power supply VCC2, and the enclosure monitoring device also includes:
[0040] N positioning modules 13, each positioning module 13 corresponding to each housing, each positioning module 13 including a third resistor 131, the first end of each third resistor 131 being used to connect to a second power supply, the second end of each third resistor 131 being connected to the third end of the corresponding switch assembly 11, and the second end of each third resistor 131 being used to output a second detection signal OUT2.
[0041] Specifically, when the enclosure is in the open state, the third end of the switch assembly 11 corresponding to the enclosure is disconnected from the second end of the switch assembly 11; when the enclosure is in the closed state, the third end of the switch assembly 11 corresponding to the enclosure is connected to the second end of the switch assembly 11.
[0042] It should be noted that when the first end of each third resistor 131 is connected to the second power supply, the positioning module 13 is in working state. When the box is opened by external force, the third end of the switch assembly 11 corresponding to the box is disconnected from the second end, and the second end of the third resistor 131 corresponding to the box is floating, that is, the second detection signal is a high-level signal. When the box is in the closed state, the third end of the switch assembly 11 corresponding to the box is connected to the second end, and the second end of the third resistor 131 corresponding to the box is grounded, that is, the second detection signal is a low-level signal. The second detection signal can be used to determine whether the box has been opened.
[0043] It is understandable that this application can not only detect whether a box has been opened through the detection module, but also detect the specific location of the opened box through the positioning module.
[0044] It should be noted that the positioning module can be installed inside the enclosure or outside the enclosure.
[0045] In one optional embodiment, a switch assembly is installed on each enclosure, each positioning module includes a third resistor, and the enclosure monitoring device further includes:
[0046] There are N microprocessors, each microprocessor corresponding to each positioning module, each microprocessor being connected to the second terminal of the third resistor of the corresponding positioning module, and each microprocessor being used to transmit the corresponding second detection signal to the user terminal.
[0047] It should be noted that each microprocessor has an identification number, and each enclosure has a number. The specific location of each enclosure with a given number is known. Each microprocessor corresponds to each enclosure, meaning that the identification number of each microprocessor corresponds to the number of each enclosure. The enclosure number can be determined based on the microprocessor's number, thereby determining the enclosure's specific location.
[0048] In one example, the cinema screen has 900 cabinets, 900 positioning modules, and 900 microprocessors. Each microprocessor corresponds to each positioning module, and each positioning module corresponds to each cabinet. Each cabinet is equipped with a switch assembly, and each positioning module includes a third resistor. Each microprocessor is connected to the second end of the third resistor of the corresponding positioning module. If the second detection signal received by the microprocessor is a high-level signal, it indicates that the cabinet corresponding to the microprocessor has been opened. The number of the corresponding cabinet can be determined based on the number of the microprocessor, and then the specific location of the opened cabinet can be determined based on the number of the cabinet. This allows for quick location of the cabinet and improves the efficiency of maintenance by staff.
[0049] In one optional embodiment, each enclosure is equipped with two switch assemblies, each positioning module includes two third resistors, and the enclosure monitoring device further includes:
[0050] There are N microprocessors, each microprocessor corresponding to each positioning module. Each microprocessor is connected to the second end of two third resistors of the corresponding positioning module. Each microprocessor is used to transmit the corresponding second detection signal to the user terminal.
[0051] It should be noted that, due to the certain volume of the cabinet, two switch components are installed on each cabinet, which can more accurately detect the opening and closing of the cabinet and thus more accurately detect the cinema screen.
[0052] In one alternative embodiment, please refer to Figure 3 The detection module 12 also includes a fourth resistor 124.
[0053] Each positioning module 13 is installed in a corresponding housing. Each positioning module 13 also includes a first terminal and a second terminal connected to each other. Multiple positioning modules 13 are connected end to end through the first terminal and the second terminal. The first terminal of the fourth resistor 124 is used to connect to the first power supply. The second terminal of the fourth resistor 124 is connected to the first terminal of the first positioning module 13. The second terminal of the last positioning module 13 is grounded. The second terminal of the fourth resistor 124 is used to output the third detection signal OUT3.
[0054] If the distance between two adjacent boxes exceeds the preset range, the third detection signal is a high-level signal; if the distance between any two adjacent boxes does not exceed the preset range, the third detection signal is a low-level signal.
[0055] It should be noted that when the first end of the fourth resistor is connected to the first power supply, if the position of each box is not changed, the two terminals between each positioning module are connected, and the second terminal of the fourth resistor is grounded, then the third detection signal is a low-level signal. If the position of the box is changed by an external force, the terminals between the positioning modules will be disconnected, and the second end of the fourth resistor will be left floating, then the third detection signal will be a high-level signal. Therefore, the distance between the positioning modules can be detected based on the third detection signal to determine whether an external force has changed the position between the boxes.
[0056] In one example, the cinema screen has 900 cabinets and 900 positioning modules. Each positioning module is installed in each cabinet. Each positioning module includes a first terminal and a second terminal. The 900 positioning modules are connected end to end through the first terminal and the second terminal. The second terminal of the last positioning module is grounded. When any cabinet is moved more than a threshold range, the third detection signal is a high-level signal. When the distance between any two cabinets does not exceed the preset range, the third detection signal is a low-level signal. The movement of the cabinet can be detected by the third detection signal.
[0057] Therefore, this application can not only detect whether the cabinet door is opened and locate the specific position of the opened cabinet, but also detect whether the cabinet has been moved, thus enabling more efficient and accurate detection of the cinema screen.
[0058] In one alternative embodiment, please refer to Figures 4-5 The switch assembly 11 includes two identical switch elements, namely a first switch element and a second switch element.
[0059] The first terminal 114 of the first switch and the first terminal 117 of the second switch are both connected to the negative input terminal of the optocoupler 121. The second terminal 115 of the first switch is connected to the third terminal 119 of the second switch. The third terminal 116 of the first switch is connected to the second terminal of the corresponding third resistor 131. The second terminal 118 of the second switch is grounded.
[0060] When the enclosure is in the open state, the third end 116 of the first switch corresponding to the enclosure is disconnected from the second end 115 of the first switch, the first end 114 of the first switch is connected to the second end 115 of the first switch, the third end 119 of the second switch corresponding to the enclosure is disconnected from the second end 118 of the second switch, and the first end 117 of the second switch is connected to the second end 118 of the second switch.
[0061] When the enclosure is in the closed state, the third end 116 of the first switch corresponding to the enclosure is connected to the second end 115 of the first switch, the first end 114 of the first switch is disconnected from the second end 115 of the first switch, the third end 119 of the second switch corresponding to the enclosure is connected to the second end 118 of the second switch, and the first end 117 of the second switch is disconnected from the second end 118 of the second switch.
[0062] It should be noted that when the enclosure is opened, the second end of at least one switch in the enclosure is disconnected from the third end, and the second end of the switch is connected to the first end of the switch assembly.
[0063] In one exemplary case, when the enclosure is opened, the second end 115 of the first switch corresponding to the enclosure is connected to the first end 114 of the first switch, and the second end 118 of the second switch corresponding to the enclosure is connected to the first end 117 of the second switch. Therefore, the first end 111 of the switch assembly corresponding to the enclosure is connected to the second end 112 of the switch assembly. The second end 115 of the first switch corresponding to the enclosure is disconnected from the third end 116 of the first switch, and the second end 118 of the second switch corresponding to the enclosure is disconnected from the third end 119 of the second switch. Therefore, the second end 112 of the switch assembly corresponding to the enclosure is disconnected from the third end 113 of the switch assembly. The first detection signal is low, and the second detection signal is high.
[0064] It should be noted that when the enclosure is closed, the second end of at least one switch in the enclosure is connected to the third end, and the second end of the switch is disconnected from the first end of the switch assembly.
[0065] In one exemplary case, when the enclosure is closed, the second end 115 of the first switch corresponding to the enclosure is disconnected from the first end 114 of the first switch, and the second end 118 of the second switch corresponding to the enclosure is disconnected from the first end 117 of the second switch. For this purpose, the second end 112 of the switch assembly corresponding to the enclosure is disconnected from the first end 111 of the switch assembly. The second end 115 of the first switch corresponding to the enclosure is connected to the third end 116 of the first switch, and the second end 118 of the second switch corresponding to the enclosure is connected to the third end 119 of the second switch. For this purpose, the second end 112 of the switch assembly corresponding to the enclosure is connected to the third end 113 of the switch assembly. The first detection signal is high level, and the second detection signal is low level.
[0066] In one optional embodiment, the first switching element is a micro switch, and a schematic diagram of the micro switch is shown below. Figure 6 As shown, the first switching element has three connection ends: a first end 114, a second end 115, and a third end 116. A switching assembly includes a first switching element and a second switching element, both of which are microswitches. The two microswitches are distributed on the upper and lower sides of the housing. When the housing is closed, the second end of the first switching element is subjected to pressure and undergoes elastic deformation, entering a triggered state. The second end of the first switching element is connected to the first end and disconnected from the third end. When the housing is opened, the first end of the first switching element is not subjected to pressure and does not undergo elastic deformation. The second end of the first switching element is disconnected from the first end and connected to the third end.
[0067] In one optional embodiment, the enclosure monitoring device further includes a signal transmitter connected to the positive output terminal of the optocoupler, for sending the first detection signal to the server.
[0068] It should be noted that the signal transmitter is used to send the first detection signal to the server, and the signal transmitter can be a level converter or a serial port server.
[0069] In one exemplary embodiment, the signal transmitter is a level converter. The input terminal of the level converter is connected to the positive output terminal of the optocoupler, and the output terminal of the level converter is connected to the corresponding interface of the server. The level converter can convert the first detection signal from the detection module into a level standard that the server can recognize, and then transmit the converted signal to the server. Upon receiving the signal, the server can issue control commands based on the signal, such as stopping the video playback on the cinema screen.
[0070] In one example, the signal transmitter is a serial port server, which is used to convert the signal of the serial interface (such as RS232, RS485) of the detection module into a network signal and send the level signal to the server via Ethernet.
[0071] In one optional embodiment, this application also provides a cinema screen, including: a first power supply, a second power supply, N cabinets and the aforementioned cabinet monitoring device, where N is a positive integer; the first power supply is connected to the first end of the first resistor and the first end of the second resistor respectively, and the second power supply is connected to the first end of each of the third resistors.
[0072] With both the first and second power supplies connected, the first detection signal can detect whether the enclosure has been opened, and the second detection signal can pinpoint the exact location of the opened enclosure, making it easier for staff to quickly locate the opened enclosure for maintenance.
[0073] In one alternative embodiment, please refer to Figure 4 The cinema screen also includes a diode 125, the positive terminal of which is connected to the first power supply VCC1, and the negative terminal of which is connected to the first end of the first resistor 122 and the first end of the second resistor 123.
[0074] It should be noted that when the first power source is connected, the LED lights up, providing a clear indication signal.
[0075] In one alternative embodiment, the first power source is a battery pack.
[0076] In one alternative embodiment, please refer to Figures 4-5The cinema screen 10 includes: a first power supply VCC1, a second power supply VCC2, N cabinets, and the aforementioned cabinet monitoring device. The first power supply can be an external power supply or a battery pack, and the second power supply is also an external power supply. Each cabinet corresponds to each positioning module. Each positioning module 13 includes two third resistors 131. The second end of each third resistor 131 is connected to the third end of each switch assembly 11. It should be noted that... Figure 4 This is a schematic diagram of two positioning modules. The cinema screen includes, but is not limited to, two positioning modules. The dashed connecting lines in the positioning modules represent wires packaged on the circuit board.
[0077] In one example, a cabinet within a cinema screen is opened. The first and second ends of a switch component corresponding to the opened cabinet are connected, while the third end of the switch component corresponding to the opened cabinet is disconnected from the second end. A first detection signal is a low-level signal. When the server detects that the first detection signal is low-level, it issues a control command to stop the cinema screen from playing video. Two second detection signals of the positioning module corresponding to the opened cabinet are high-level signals. The microprocessor transmits the second detection signals to the user terminal. The user terminal can determine the specific location of the opened cabinet based on the microprocessor's identification number, which is used to guide staff in maintenance.
[0078] In one example, if none of the cabinets in the cinema screen are opened, the first and second terminals of each switch component corresponding to each cabinet are disconnected, and the third terminal of each switch component corresponding to each cabinet is connected to the second terminal. The first detection signal is a high-level signal, indicating that there is no abnormal cabinet. When the server detects that the first detection signal is a high-level signal, it issues a control command for the cinema screen to play video. The two second detection signals of the positioning module corresponding to each cabinet are low-level signals. The microprocessor transmits the second detection signals to the user terminal, and the user terminal can further verify the closure status of the cabinet based on the signal from the microprocessor.
[0079] On the one hand, this application can detect the presence of abnormal enclosures through a detection module and accurately locate the specific position of the abnormal enclosures through a positioning module, thereby achieving efficient maintenance of the abnormal enclosures. On the other hand, this application can improve the detection accuracy of abnormal enclosures by performing dual detection on the enclosures through both the detection module and the positioning module.
[0080] In one exemplary embodiment, the detection module is located inside the cinema screen's backpack box, which is situated below the entire screen, facilitating maintenance. This application only requires a separate battery for the detection module, eliminating the need for batteries for each screen. This application uses only optocouplers for signal conversion to transmit alarm signals to the server. Furthermore, when the system has external power, a switch allows for the use of external power to replace battery power, reducing battery power consumption; the calculated battery life can reach 5-10 years. The positioning module operates when external power is available. When the MCU in the screen enclosure detects an abnormality in the door, it transmits the abnormal enclosure information to the server via a network cable. The host computer can then directly locate the abnormality, simplifying maintenance.
[0081] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of this application.
Claims
1. A case monitoring device characterized by comprising: Applied to cinema screens, the cinema screen includes a first power supply and N cabinets, where N is a positive integer, and the cabinet monitoring device includes: Multiple switch assemblies, each switch assembly being mounted in a corresponding enclosure, wherein each enclosure corresponds to at least one switch assembly; The detection module includes an optocoupler, a first resistor, and a second resistor. The first end of the first resistor is used to connect to the first power supply, the second end of the first resistor is connected to the positive input terminal of the optocoupler, the negative input terminal of the optocoupler is connected to the first end of each of the switching components, and the second end of each of the switching components is grounded. The first end of the second resistor is used to connect to the first power supply, the second end of the second resistor is connected to the positive output terminal of the optocoupler, the negative output terminal of the optocoupler is grounded, and the positive output terminal of the optocoupler is used to output the first detection signal. Specifically, when the enclosure is in the open state, the first end of the switch assembly corresponding to the enclosure is connected to the second end of the switch assembly; when the enclosure is in the closed state, the first end of the switch assembly corresponding to the enclosure is disconnected from the second end of the switch assembly.
2. The case monitoring apparatus according to claim 1, characterized by The cinema screen also includes a second power supply, and the enclosure monitoring device also includes: There are N positioning modules, each positioning module corresponds to each box, each positioning module includes a third resistor, the first end of each third resistor is used to connect to a second power supply, the second end of each third resistor is connected to the third end of the corresponding switch assembly, and the second end of each third resistor is used to output a second detection signal. Specifically, when the enclosure is in the open state, the third end of the switch assembly corresponding to the enclosure is disconnected from the second end of the switch assembly; when the enclosure is in the closed state, the third end of the switch assembly corresponding to the enclosure is connected to the second end of the switch assembly.
3. The case monitoring apparatus according to claim 2, characterized by Each enclosure is equipped with a switch assembly, each positioning module includes a third resistor, and the enclosure monitoring device further includes: There are N microprocessors, each microprocessor corresponding to each positioning module, each microprocessor being connected to the second terminal of the third resistor of the corresponding positioning module, and each microprocessor being used to transmit the corresponding second detection signal to the user terminal.
4. The container monitoring apparatus of claim 2, wherein Each enclosure is equipped with two switch assemblies, each positioning module includes two third resistors, and the enclosure monitoring device further includes: There are N microprocessors, each microprocessor corresponding to each positioning module. Each microprocessor is connected to the second end of two third resistors of the corresponding positioning module. Each microprocessor is used to transmit the corresponding second detection signal to the user terminal.
5. The enclosure monitoring device according to claim 2, characterized in that, The detection module also includes a fourth resistor; Each positioning module is installed in a corresponding housing. Each positioning module also includes a first terminal and a second terminal connected to each other. Multiple positioning modules are connected end to end through the first terminal and the second terminal. The first terminal of the fourth resistor is used to connect to the first power supply. The second terminal of the fourth resistor is connected to the first terminal of the first positioning module. The second terminal of the last positioning module is grounded. The second terminal of the fourth resistor is used to output a third detection signal. If the distance between two adjacent boxes exceeds the preset range, the third detection signal is a high-level signal; if the distance between any two adjacent boxes does not exceed the preset range, the third detection signal is a low-level signal.
6. The enclosure monitoring device according to claim 2, characterized in that, The switching assembly includes two identical switching elements, namely a first switching element and a second switching element; The first end of the first switch and the first end of the second switch are both connected to the negative input terminal of the optocoupler. The second end of the first switch is connected to the third end of the second switch. The third end of the first switch is connected to the second end of the corresponding third resistor. The second end of the second switch is grounded. When the enclosure is in the open state, the third end of the first switch corresponding to the enclosure is disconnected from the second end of the first switch, and the first end of the first switch is connected to the second end of the first switch. The third end of the second switch corresponding to the enclosure is disconnected from the second end of the second switch, and the first end of the second switch is connected to the second end of the second switch. When the enclosure is in the closed state, the third end of the first switch corresponding to the enclosure is connected to the second end of the first switch, and the first end of the first switch is disconnected from the second end of the first switch. The third end of the second switch corresponding to the enclosure is connected to the second end of the second switch, and the first end of the second switch is disconnected from the second end of the second switch.
7. The enclosure monitoring apparatus of claim 1, wherein, The enclosure monitoring device also includes: A signal transmitter is connected to the positive output terminal of the optocoupler and is used to send the first detection signal to the server.
8. A theater screen, characterized by, include: The first power supply, the second power supply, N enclosures, and the enclosure monitoring device according to any one of claims 2-7, where N is a positive integer; The first power supply is connected to the first end of the first resistor and the first end of the second resistor, respectively, and the second power supply is connected to the first end of each of the third resistors.
9. A screen body according to claim 8, wherein The cinema screen also includes: A diode, wherein the positive terminal of the diode is connected to the first power supply, and the negative terminal of the diode is connected to the first end of the first resistor and the first end of the second resistor, respectively.
10. A cinema screen according to claim 8, characterized in that, The first power source is a battery pack.