A check-out cabinet lighting device
By dividing the requisition cabinet into public and private storage spaces and using independent drive and lighting circuit controls, the problems of high energy consumption and safety hazards of the requisition cabinet are solved, and efficient and safe material retrieval and lighting management are achieved.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- STATE GRID JIANGSU ELECTRIC POWER CO LTD INNOVATION CENT
- Filing Date
- 2025-05-14
- Publication Date
- 2026-06-12
AI Technical Summary
The existing lighting design of the requisition cabinet results in high energy consumption and safety hazards, and it cannot effectively distinguish the material retrieval and placement areas for different users.
The storage space inside the requisition cabinet is divided into public and private spaces. The door locks and light sources of the public and private storage spaces are controlled by independent drive circuits and lighting circuits, so as to realize the corresponding lighting and retrieval. Multi-level power supply circuits are used to reduce energy consumption and reduce interference.
The system reduces energy consumption, improves security, ensures independent lighting for personal items and efficient access to public items, and reduces interference between power modules.
Smart Images
Figure CN224356314U_ABST
Abstract
Description
Technical Field
[0001] This utility model belongs to the field of lighting technology for requisition cabinets, and specifically relates to a lighting device for requisition cabinets. Background Technology
[0002] The existing power supply system's requisition cabinet stores supplies in its internal storage space and has a touchscreen on the outside. Users log into the smart system by scanning a code or facial recognition to open the cabinet and retrieve supplies. To ensure users can clearly see the supplies inside, each shelf is equipped with LED strip lighting. However, the existing cabinet uses general lighting throughout and a single lock controls the door's opening and closing. In practice, the supplies stored in the cabinet often correspond to different users, and some items or categories may be inconvenient for unauthorized users to access. Furthermore, because the cabinet has general lighting, unused areas are also illuminated, resulting in redundant lighting. In short, the existing requisition cabinet, using a single, monolithic cabinet, not only consumes a lot of energy but also poses a safety hazard, as some supplies (such as precision sensors) may be accessed by unauthorized personnel.
[0003] Existing lighting solutions, such as CN207869440U, disclose an LED light inside a cabinet that automatically turns on and off following the cabinet door. This includes a cabinet body and a lighting system. The cabinet body includes a cabinet panel and a cabinet door. A handle is installed on the cabinet door, and a fingerprint sensor is installed on the handle. A fingerprint lock is installed at the connection point between the two cabinet doors. The cabinet door and cabinet panel are movably connected via cabinet hinges. A normally closed spring button of the lighting system is fixedly installed on the cabinet hinge. The fixed end of the normally closed spring button is fixed to the cabinet hinge, and the movable end of the normally closed spring button abuts against the cabinet door. A light sensor is fixed to the top of the cabinet body, and the LED light is also fixed to the top of the cabinet body. The normally closed spring button, light sensor, and fingerprint sensor are connected to the output of a microcontroller. The lighting system and fingerprint lock are also connected to the output of the microcontroller. This system can control the lighting inside the cabinet according to the light intensity and also ensures that valuable items inside the cabinet are not damaged.
[0004] The above solution achieves internal lighting through overall lighting control. Therefore, how to provide a requisition cabinet that illuminates only certain areas where materials can be retrieved is a pressing technical problem that needs to be solved in this field. Utility Model Content
[0005] In view of the deficiencies in the prior art, the present invention provides a lighting device for a requisition cabinet, which can reduce the energy consumption of the requisition cabinet and improve the safety of requisition.
[0006] This utility model provides a lighting device for a requisition cabinet. The requisition cabinet is equipped with a cabinet door, and the requisition cabinet is equipped with a public storage space, a private storage space, and a storage door for opening and closing the private storage space.
[0007] Lighting fixtures include lighting components, driving components, and switching components;
[0008] The lighting assembly includes a first lighting circuit, a second lighting circuit, a common light source and a private light source. The common light source and the private light source are respectively installed in the common storage space and the private storage space. The first lighting circuit is electrically connected to the common light source, and the second lighting circuit is electrically connected to the private light source.
[0009] The drive assembly includes a first drive circuit, a second drive circuit, a public door lock, and a private door lock; the public door lock is installed on the cabinet door, and the private door lock is installed on the storage door; the first drive circuit is electrically connected to the public door lock, and the second drive circuit is electrically connected to the private door lock.
[0010] The switching assembly includes a first relay and a second relay. The first lighting circuit and the first driving circuit are connected through the first relay, and the second lighting circuit and the second driving circuit are connected through the second relay.
[0011] Furthermore, the first relay includes a first electromagnetic coil and a first contact, the first drive circuit is electrically connected to the first electromagnetic coil and the common door lock, and the first lighting circuit is electrically connected to the first contact and the common light source.
[0012] The second relay includes a second electromagnetic coil and a second contact. The second drive circuit is electrically connected to the second electromagnetic coil and the independent door lock. The second lighting circuit is electrically connected to the second contact and the private light source.
[0013] Furthermore, the lighting device includes a power supply circuit with different output voltages, and the power supply circuit is connected to the first lighting circuit, the second lighting circuit, the first driving circuit, and the second driving circuit.
[0014] Furthermore, the power supply circuit includes a first power supply circuit, a second power supply circuit, and a third power supply circuit connected in series. The output voltages of the first power supply circuit, the second power supply circuit, and the third power supply circuit are different. The first power supply circuit is connected to the first lighting circuit, the second lighting circuit, the first driving circuit, and the second driving circuit. The second power supply circuit and the third power supply circuit are both connected to the first driving circuit and the second driving circuit.
[0015] Furthermore, the output voltages of the first power supply circuit, the second power supply circuit, and the third power supply circuit decrease sequentially.
[0016] Furthermore, the first power supply circuit, the second power supply circuit, and the third power supply circuit are all equipped with unidirectional transient voltage suppression diodes and filter capacitors, and the second power supply circuit and the third power supply circuit are respectively equipped with switching regulators and linear regulators.
[0017] Furthermore, the first power supply circuit includes a first power supply main line and an overcurrent protection plate on the first power supply main line. The two ends of the first power supply main line are respectively connected to the power supply and the second power supply circuit. The first power supply circuit has multiple filter capacitors connected in parallel, and the two ends of the capacitors are respectively grounded and connected to the output terminal of the overcurrent protection plate. The cathode of the unidirectional transient voltage suppression diode of the first power supply circuit is grounded, and the anode is connected to the input terminal of the overcurrent protection plate.
[0018] Furthermore, the input pin of the switching regulator is connected to the first power supply circuit, and the output pin is connected to the inductor and then to the third power supply circuit. Part of the filter capacitors of the second power supply circuit are connected in parallel, and the two ends of the parallel connection are connected to the input pin and the ground pin of the switching regulator, respectively. The remaining filter capacitors are connected in parallel with the unidirectional transient voltage suppressor diode of the second power supply circuit, and the two ends of the parallel connection are connected to the output terminal of the inductor and the ground pin of the switching regulator, respectively. The ground pin of the switching regulator is grounded.
[0019] Furthermore, the input pin of the linear regulator is connected to the second power supply circuit, and the output pin is connected to the output line. Part of the filter capacitors of the third power supply circuit are connected in parallel, and the two ends of the parallel connection are connected to the input pin and the ground pin of the linear regulator, respectively. The remaining filter capacitors are connected in parallel with the unidirectional transient voltage suppression diode of the third power supply circuit, and the two ends of the parallel connection are connected to the output pin and the ground pin of the linear regulator, respectively. The ground pin of the linear regulator is grounded.
[0020] Furthermore, both the first lighting circuit and the second lighting circuit include a lighting driver sub-circuit, a lighting relay, and a lighting sub-circuit connected in sequence. The lighting sub-circuit includes a lighting power supply, which is connected in series with the first relay and the common light source component, or in series with the second relay and the private light source component. The lighting driver sub-circuit drives the lighting relay to switch between on and off states.
[0021] Furthermore, the lighting relay includes a lighting electromagnetic coil and lighting contacts. The lighting drive sub-circuit includes a relay driver. Multiple output pins of the relay driver are sequentially connected to the power supply pins of the lighting electromagnetic coil and the relay driver. The power supply pins are connected to the first power supply circuit. The lighting contacts are located on the lighting sub-circuit and are connected in series with a public light source or a private light source.
[0022] Furthermore, the lighting power supplies of different lighting sub-circuits have different output voltages, or the common light source components and private light source components have different rated power.
[0023] Furthermore, both the first driving circuit and the second driving circuit include a lock detection circuit and a lock switching circuit. The lock detection circuit is electrically connected to the public door lock and the independent door lock and is used to detect the open and closed states of the public door lock and the independent door lock. The lock switching circuit is electrically connected to the public door lock and the independent door lock and is used to control the switching of the open and closed states of the public door lock and the independent door lock.
[0024] Furthermore, the lock detection circuit is connected to the second power supply circuit and the third power supply circuit, and the lock switching circuit is connected to the first power supply circuit, the second power supply circuit, and the third power supply circuit.
[0025] Furthermore, the lock detection circuit includes multiple sets of lock detection sub-circuits, each set of lock detection sub-circuits being electrically connected to a common door lock and / or an independent door lock;
[0026] The lock detection sub-circuit includes an optocoupler. The anode of the optocoupler is connected to the second power supply circuit through a first protective resistor. The cathode is electrically connected to a public door lock and / or an independent door lock and then grounded. The emitter is grounded. The collector is connected to the third power supply circuit through a second protective resistor. The collector is connected to a signal output line.
[0027] Furthermore, the lock switching circuit includes multiple sets of lock switching sub-circuits, each set of lock switching sub-circuits being electrically connected to a common door lock or an independent door lock;
[0028] The lock switching sub-circuit includes a single-channel dual-power bus transceiver and an NMOS transistor. The non-driver side pin of the single-channel dual-power bus transceiver is connected to a signal input line, and the driver side pin is connected to the gate of the NMOS transistor. The non-driver side power supply pin and the driver side power supply pin of the single-channel dual-power bus transceiver are connected to the third power supply circuit and the second power supply circuit, respectively. The source of the NMOS transistor is grounded, and its drain is connected to the first power supply circuit through a freewheeling diode. The drain of the NMOS transistor is connected in series with the common door lock, the first relay, and the first power supply circuit, or in series with the independent door lock, the second relay, and the first power supply circuit.
[0029] The lighting device for a requisition cabinet provided by this utility model has at least the following beneficial effects:
[0030] (1) By dividing the storage space in the requisition cabinet into public storage space and private storage space, and by setting a first drive circuit, public materials and items can be retrieved and placed when the public door lock is opened; through the private storage space and the second drive circuit, private materials and items in the private storage space can also be retrieved and placed when the independent door lock is opened, thereby improving the security of requisitioning the requisition cabinet. In addition, the first lighting circuit corresponds to the first drive circuit through the first relay, and the second lighting circuit corresponds to the second drive circuit through the second relay. When the public door lock is opened, the public light source in the public storage space can be illuminated; when the private door lock is opened, the private light source in the private storage space corresponding to the private door lock can be illuminated, thus avoiding the private light source in the unopened private storage space from being illuminated, thereby achieving the purpose of reducing the energy consumption of the requisition cabinet.
[0031] (2) By using a single power supply in conjunction with a multi-stage power supply circuit, ground loop noise interference and common-mode interference caused by potential difference between multiple power supply modules can be eliminated.
[0032] (3) The lock detection circuit and lock switching circuit can be set to realize the status detection of the lock of the requisition cabinet and the switching of the open and closed status. Attached Figure Description
[0033] Figure 1 A schematic diagram of a requisition cabinet lighting device provided by this utility model;
[0034] Figure 2 This is a schematic diagram of the requisition cabinet provided in a certain embodiment of the present utility model;
[0035] Figure 3 A schematic diagram of a power supply circuit provided in a certain embodiment of the present invention;
[0036] Figure 4 A circuit diagram of a first power supply circuit provided in a certain embodiment of the present utility model;
[0037] Figure 5 A circuit diagram of a second power supply circuit provided in a certain embodiment of the present utility model;
[0038] Figure 6 A circuit diagram of a third power supply circuit provided in a certain embodiment of this utility model;
[0039] Figure 7 A schematic diagram of a first lighting circuit or a second lighting circuit provided in a certain embodiment of the present invention;
[0040] Figure 8 A circuit diagram of a lighting driver sub-circuit provided in a certain embodiment of the present invention;
[0041] Figure 9A circuit diagram of a lock detection circuit provided in a certain embodiment of this utility model;
[0042] Figure 10 A circuit diagram of a lock switching circuit provided in a certain embodiment of this utility model.
[0043] Attached diagram labeling: 1-cabinet door, 2-common storage space, 3-storage door. Detailed Implementation
[0044] To better understand the above technical solutions, a detailed description of the solutions will be provided below in conjunction with the accompanying drawings and specific embodiments. Obviously, the described embodiments are merely some, not all, of the embodiments of this utility model. All other embodiments obtained by those skilled in the art based on the embodiments of this utility model without creative effort are within the scope of protection of this utility model.
[0045] The terminology used in the embodiments of this utility model is for the purpose of describing particular embodiments only and is not intended to limit the utility model. The singular forms “a,” “the,” and “the” used in the embodiments of this utility model and the appended claims are also intended to include the plural forms, and “multiple” generally includes at least two unless the context clearly indicates otherwise.
[0046] It should also be noted that the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that an article or device that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such an article or device. Without further limitation, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the article or device that includes said element.
[0047] like Figure 1 and Figure 2 As shown, this utility model provides a lighting device for a requisition cabinet. The requisition cabinet is equipped with a cabinet door, and the requisition cabinet is equipped with a public storage space, a private storage space, and a storage door for opening and closing the private storage space.
[0048] Lighting fixtures include lighting components, driving components, and switching components;
[0049] The lighting assembly includes a first lighting circuit, a second lighting circuit, a common light source and a private light source. The common light source and the private light source are respectively installed in the common storage space and the private storage space. The first lighting circuit is electrically connected to the common light source, and the second lighting circuit is electrically connected to the private light source.
[0050] The drive assembly includes a first drive circuit, a second drive circuit, a public door lock, and a private door lock; the public door lock is installed on the cabinet door, and the private door lock is installed on the storage door; the first drive circuit is electrically connected to the public door lock, and the second drive circuit is electrically connected to the private door lock.
[0051] The switching assembly includes a first relay and a second relay. A first lighting circuit and a first drive circuit are connected through the first relay, and a second lighting circuit and a second drive circuit are connected through the second relay. Specifically, the first relay includes a first electromagnetic coil and a first contact. The first drive circuit is electrically connected to the first electromagnetic coil and a common door lock, and the first lighting circuit is electrically connected to the first contact and a common light source. The second relay includes a second electromagnetic coil and a second contact. The second drive circuit is electrically connected to the second electromagnetic coil and an independent door lock, and the second lighting circuit is electrically connected to the second contact and a private light source.
[0052] The system can switch between the open and closed states of public and individual door locks, and simultaneously switch between the open and closed states of public and private light sources. That is, when a public door lock is open, the public light source in the public storage space can also be open; similarly, when the individual door lock corresponding to a private storage space is open, the private light source in that private storage space can also be open. The requisition cabinet can have multiple private storage spaces, and the lighting components can include multiple second lighting circuits, while the driving components can include multiple second driving circuits. Each private storage space, second lighting circuit, and second driving circuit can be matched one-to-one to open, close, and illuminate a specific private storage space, ultimately achieving independent opening, closing, and lighting for different private storage spaces, ensuring the security of privately used supplies.
[0053] In practical applications, lighting devices include power supply circuits with different output voltages. These power supply circuits are connected to a first lighting circuit, a second lighting circuit, a first driving circuit, and a second driving circuit, and are used to provide different output voltages. Providing different output voltages means that the power supply circuit can provide different power supply voltages to different connected circuits, or it can simultaneously provide different voltages to the same circuit. The voltages provided are selected and determined according to specific circumstances. Correspondingly, the power supply circuit can include at least two power supply circuits with different output voltages. Specifically, the power supply circuit can include multiple power supply circuits with different output voltages connected together, and each power supply circuit's output terminal is connected to an output line. The output lines connected through the output terminals can provide different voltages to different circuits and components. For example, Figure 3As shown, the power supply circuit may include a first power supply circuit, a second power supply circuit, and a third power supply circuit connected in series with sequentially decreasing output voltages. The first power supply circuit is connected to the first lighting circuit, the second lighting circuit, the first driving circuit, and the second driving circuit. The second and third power supply circuits are both connected to the first and second driving circuits. Each of the first, second, and third power supply circuits includes a unidirectional transient voltage suppression diode and a filter capacitor. The second and third power supply circuits each include a switching regulator and a linear regulator, respectively. In practical applications, the output voltages of the first, second, and third power supply circuits can be 12V, 5V, and 3.3V, respectively.
[0054] The first power supply circuit may include a first main power supply line and an overcurrent protection device on the main power supply line. The two ends of the first main power supply line are connected to a power supply (which can be household electricity) and a second power supply circuit, respectively. The first power supply circuit has multiple filter capacitors connected in parallel, with their two ends grounded and connected to the output terminal of the overcurrent protection device, respectively. The cathode of the unidirectional transient voltage suppression diode in the first power supply circuit is grounded, and the anode is connected to the input terminal of the overcurrent protection device. The overcurrent protection device is a 30V, 20A power input resettable fuse. At least one of the filter capacitors in the first power supply circuit has a rated voltage greater than and a capacitance value less than the rated voltage and capacitance value of the other filter capacitors connected in parallel. Specifically, the rated voltage of this at least one filter capacitor is 50V, and its capacitance value is 0.1μF. The rated voltage of the other filter capacitors is 16V, and their capacitance value is 270μF. Figure 4 As shown, DC_IN of the first power supply circuit is the 12V power input interface of the lighting device, connected to the power supply. D2 is a power input unidirectional transient voltage suppressor diode (TVS), model SMCJ15A, which provides power supply protection for the entire lighting device, preventing damage to the lighting device from transient overvoltage. F1 is a power input resettable fuse, specification 30V, 20A, to prevent short circuit faults. C10 and C12 are filter capacitors of the first power supply circuit.
[0055] The input pin of the switching regulator is connected to the first power supply circuit, and the output pin is connected to the inductor and then to the third power supply circuit. Part of the filter capacitors of the second power supply circuit are connected in parallel, and the two ends of the parallel connection are connected to the input pin and the ground pin of the switching regulator, respectively. The remaining filter capacitors are connected in parallel with the unidirectional transient voltage suppressor diode of the second power supply circuit, and the two ends of the parallel connection are connected to the output terminal of the inductor and the ground pin of the switching regulator, respectively. The ground pin of the switching regulator is grounded. The switching regulator's input pins include an input voltage pin and an enable control pin. The input voltage pin and enable control pin are connected in parallel to the first power supply circuit. The switching frequency setting / synchronization pin is connected to the third resistor (R8) and then to the switching regulator's ground pin. The soft-start control pin is connected to the first capacitor (C16) and then to the switching regulator's ground pin. The extended function pin is connected to its own ground pin. The switching regulator's output pins include a switching node pin and a bootstrap capacitor pin. The switching node pin is connected to the inductor. The bootstrap capacitor pin is connected to the second capacitor (C17) and then to its own switching node pin. The feedback pin is connected to the fourth resistor (R87) and then to the inductor output terminal. The inductor output terminal is connected to its own ground pin through a Schottky diode (D4). The feedback pin is connected to the fifth resistor (R88) and then to its own ground pin. The second power supply circuit also includes a second status display branch connected in parallel with the unidirectional transient voltage suppressor diode of the second power supply circuit. The second status display branch includes a second current-limiting resistor (R9) and a second light-emitting diode (D6) connected in series. The anode of the second light-emitting diode is connected to the cathode of the unidirectional transient voltage suppressor diode, and the cathode of the second light-emitting diode is connected to the anode of the unidirectional transient voltage suppressor diode through the second current-limiting resistor. In the second power supply circuit, both sides of the switching regulator (input and output pins) have at least one filter capacitor (C15, C17) with a capacitance of 0.1μF, and other filter capacitors (including C18, C28) with a capacitance of 4.7μF. The Schottky diode is model SB1045L, with a peak reverse voltage of 45V, an average rectified output current of 10A, and a forward voltage drop of 0.5V. The third resistor has a resistance of 44.2kΩ. Figure 5 As shown, the 12V power supply of the second power supply circuit is converted to 5V power supply through switching regulator U2. U2 is model LMR140505DDAR, with an input voltage range of 4V~40V and a continuous output current of 5A. D4 is the freewheeling Schottky diode of U2, and D5 is a 5V power supply unidirectional transient voltage suppressor diode (TVS), model SMBJ5.0A. The second power supply circuit can provide a maximum power supply capacity of 5V and 5A, which is sufficient to provide 5V power to the entire lighting device and Android smart control board.
[0056] The input pin of the linear regulator is connected to the second power supply circuit, and the output pin is connected to the output line for external power supply. Part of the filter capacitors (C24, C27) of the third power supply circuit are connected in parallel, with their two ends connected to the input pin and ground pin of the linear regulator, respectively. The remaining filter capacitors (C32, C39) are connected in parallel with the unidirectional transient voltage suppressor diode (D7) of the third power supply circuit, with their two ends connected to the output pin and ground pin of the linear regulator, respectively. The ground pin of the linear regulator is grounded. The third power supply circuit also includes a third status display branch connected in parallel with the unidirectional transient voltage suppressor diode. The third status display branch includes a third current-limiting resistor (R10) and a third light-emitting diode (D8) connected in series. The anode of the third light-emitting diode is connected to the cathode of the unidirectional transient voltage suppressor diode, and the cathode of the third light-emitting diode is connected to the anode of the unidirectional transient voltage suppressor diode through the third current-limiting resistor. In the third power supply circuit, the linear regulator has at least one 0.1μF filter capacitor on both sides (input and output pins), and the other filter capacitors have a capacitance of 22μF. The third power supply circuit primarily provides 3.3V DC power to the microcontroller's main control circuit, communication circuit, lock switching circuit, and lock detection circuit. The third power supply circuit is as follows... Figure 6 As shown, U3 is a linear regulator (which can be a low dropout linear regulator, LDO), model SPX1117-3.3. SPX1117-3.3 can use a low ESR (equivalent series resistance) ceramic capacitor as the output capacitor. D7 is a 3.3V power supply unidirectional transient voltage suppressor diode (TVS), model SMAJ3.3A.
[0057] like Figure 7 and Figure 8As shown, both the first and second lighting circuits in this embodiment can include a lighting driver sub-circuit, a lighting relay, and a lighting sub-circuit. The lighting relay includes a lighting electromagnetic coil and lighting contacts. The lighting sub-circuit includes a lighting power supply, which is connected in series with the first contact of the first relay and a common light source, or connected in series with the second contact of the second relay and at least one private light source. The lighting driver sub-circuit drives the lighting relay to switch between on and off states. K11 can be either the first relay or the second relay. The lighting driver sub-circuit includes a relay driver. Multiple input pins of the relay driver are respectively connected to signal input lines. Multiple output pins corresponding to the multiple input pins are sequentially connected to the power supply pins of the lighting electromagnetic coil and the relay driver. The power supply pins are connected to the output lines of the first power supply circuit. The lighting contacts are located on the lighting sub-circuit and are connected in series with either the common light source or the private light source. The lighting driver sub-circuit also includes a rectifier diode and a first status display branch. Both the rectifier diode and the first status display branch are connected in parallel with the lighting relay. The first status display branch includes a first current-limiting resistor (R46) and a first light-emitting diode (D28) connected in series. The cathode of the rectifier diode is connected to the power supply pin of the relay driver, and the anode of the first light-emitting diode is connected to the power supply pin of the relay driver through the first current-limiting resistor. The first light-emitting diode is a red LED. Multiple input pins of the relay driver are connected to the signal input line in series with the first resistor (R37) and grounded after being connected to the second resistor (R56). The power supply pin (common terminal pin) of the relay driver is connected to the output line of the first power supply circuit at a voltage of 12V. The resistance values of the first current-limiting resistor and the first resistor are both 4.7kΩ, and the resistance value of the second resistor is 20kΩ. The following describes the first lighting driver sub-circuit. U5 is a Darlington transistor array used to drive the relay. There are 7 channels, of which 3 are used. The model is ULN2003A. K1 is a lighting relay used to cut off or open the lighting sub-circuit. Its model number is SLA-12VDC-SL-C, the lighting electromagnetic coil voltage is 12V, and the maximum switching current is 30A. D27 is the rectifier diode of the lighting relay, i.e., the current discharge diode for the electromagnetic coil, model number 1N4007. The electromagnetic coils and contacts of the first relay, second relay, and lighting relay work together. Specifically, when the electromagnetic coil is energized, it attracts the contacts, making the circuit connected. When the electromagnetic coil is de-energized, the circuit is open. In other words, the switching of the circuit at the contact is achieved through the cooperation of the electromagnetic coil and the contacts.
[0058] Both the first and second driving circuits may include a lock detection circuit and a lock switching circuit. The lock detection circuit is electrically connected to the public lock and the independent lock respectively, and is used to detect the open and closed states of the public lock and the independent lock, outputting the detection status to the corresponding position for display or statistics. The lock switching circuit is electrically connected to the public lock and the independent lock respectively, and is used to control the switching of the open and closed states of the public lock and the independent lock. The lock detection circuit is connected to the second power supply circuit and the third power supply circuit, and the lock switching circuit is connected to the first power supply circuit, the second power supply circuit, and the third power supply circuit. In practical applications, the lock detection circuit can include multiple sets of lock detection sub-circuits, each electrically connected to a common lock and / or an independent lock. Each lock detection sub-circuit includes an optocoupler. The anode of the optocoupler is connected to the output line of the second power supply circuit via a first protective resistor (R47, R48). The cathode (DI1, DI2) of the optocoupler is grounded after being electrically connected to the common lock and / or the independent lock. The emitter of the optocoupler is grounded. The collector of the optocoupler is connected to the third power supply circuit via a second protective resistor (R61, R62), and a signal output line is connected to the collector. The lock detection circuit also includes a fourth status display branch, which includes a fourth current-limiting resistor (R68, R69) and a fourth light-emitting diode (D33, D34) connected in series. The anode of the fourth light-emitting diode is connected to the output line of the third power supply circuit, and the cathode of the fourth light-emitting diode is connected to the collector of the optocoupler via the fourth current-limiting resistor. The resistance value of the second protective resistor is 4.7kΩ. The lock detection circuit is mainly used to detect the status of public and individual door locks. The lock detection circuit can have six identical lock detection sub-circuits, capable of simultaneously detecting the status of six public or individual door locks. The lock detection circuit is as follows: Figure 9 The diagram shows a lock detection sub-circuit with three connected channels. The following description focuses on the first lock detection sub-circuit. The lock detection sub-circuit uses an optocoupler U6 (model EL3H7-G) for signal isolation. D33 is the fourth light-emitting diode, specifically a red LED, used to display the open / closed status of the public or individual lock connected to the first channel. When the status of the public or individual lock in the first channel changes, this lock detection sub-circuit will provide feedback through its signal output line.
[0059] The lock switching circuit may include multiple sets of lock switching sub-circuits, each set of lock switching sub-circuits being electrically connected to a common door lock and / or an independent door lock. Each lock switching sub-circuit includes a single-channel dual-power bus transceiver and an NMOS transistor. The non-driving side pin of the single-channel dual-power bus transceiver is connected to a signal input line, and the driving side pin is connected to the gate of the NMOS transistor. The non-driving side power supply pin and the driving side power supply pin of the single-channel dual-power bus transceiver are respectively connected to output lines with different voltages. The source of the NMOS transistor is grounded, and its drain is connected to the first power supply circuit through a freewheeling diode. The drain of the NMOS transistor is connected in series with the common door lock, the first electromagnetic coil of the first relay, and the first power supply circuit, or in series with the independent door lock, the second electromagnetic coil of the second relay, and the first power supply circuit, as detailed below. Figure 8 and Figure 10 As shown, the lock switching circuit and the lighting sub-circuit are connected via line A_01. Figure 8 The LK_01 line is electrically connected to the public or independent door lock and then to the first power supply circuit. The non-drive side pin of the single-channel dual-power bus transceiver is grounded through a sixth resistor (R57), which has a resistance of 20kΩ. The direction control pin of the single-channel dual-power bus transceiver is connected to the output line of the third power supply circuit through a seventh resistor (R45). The non-drive side power pin (VCCA) and drive side power pin (VCCB) of the single-channel dual-power bus transceiver are respectively connected to the output lines of the third and second power supply circuits. The non-drive side power pin and drive side power pin of the single-channel dual-power bus transceiver are respectively connected to a first filter circuit and a second filter circuit. The first filter circuit includes a first grounding capacitor, and the second filter circuit includes multiple parallel second grounding capacitors. The driver-side pins of the single-channel dual-power bus transceiver are connected to the gate of the NMOS transistor via the eighth resistor (R22), and the gate of the NMOS transistor (Q1) is grounded via the ninth resistor (R23). The lock switching circuit also includes a fifth status display branch connected in parallel with the freewheeling diode. The fifth status display branch includes a fifth current-limiting resistor (R24) and a fifth light-emitting diode (D20) connected in series. The anode of the fifth light-emitting diode is connected to the output line of the first power supply circuit via the fifth current-limiting resistor, and the cathode of the fifth light-emitting diode is connected to the drain of the NMOS transistor. The lock switching circuit is mainly used to switch the open and closed states of public door locks and independent door locks. The lock switching circuit can have four identical channels, which can simultaneously drive four public door locks or independent door locks. The lock switching circuit is as follows: Figure 10The diagram illustrates the first lockout switching circuit. U14 is a single-bit dual-supply bus transceiver with configurable voltage level shifting and tri-state output, model SN74LVC1T450BV. It converts the input 3.3V signal to a 5V signal, reducing the on-resistance of the NMOS transistor. By using resistor R45 (the seventh resistor), pin DIR of this transceiver is pulled high to direct the signal direction from A to B, with a supply voltage of 3.3V on side A and 5V on side B. Q1 is an N-type metal-oxide-semiconductor (NMOS) transistor, model IRLR8726TRPBF. This NMOS transistor has a drain-source voltage of 30V, a maximum continuous drain current of 86A, and an on-resistance of 5.8mΩ at a gate voltage of 10V. D19 is a freewheeling diode, specifically an electromagnetic lockout coil current discharge diode, model 1N4007, used to protect the NMOS transistor from damage caused by the high voltage generated when the coil is de-energized. The opening and closing states of the light source and the door lock can be synchronously switched via a switching assembly, corresponding to the lighting sub-circuit and the lock switching sub-circuit.
[0060] In this embodiment of the invention, the specifications of the light-emitting diodes and current-limiting resistors in the first, second, third, and fourth state display branches can be the same or different. Specifically, when the specifications are the same, the resistance value of the current-limiting resistor is 4.7kΩ. Furthermore, "connected to an output line" means that the output terminal of the corresponding power supply circuit is connected to the output line, and the output voltage of the corresponding power supply circuit is provided to the output line. For example, when connected to the output line of the first power supply circuit, it indicates that the corresponding voltage is provided by the first power supply circuit (e.g., a 12V power supply voltage).
[0061] The public and individual locks of the lighting fixtures can be opened and closed using either electronic keys or physical methods (keys). For electronic keys, a personnel identification sensor can be installed on the requisition cabinet to identify individuals and determine the corresponding electronic key. Specifically, one or more factors can be used for authentication, such as existing biometrics (fingerprint / face recognition), RFID work cards, and dynamic passwords. After authentication, each identity corresponds to a unique electronic key, which is used for the light source and locks of the public storage space and, at most, all private storage spaces. In practical applications, the personnel identification sensor detects the identity information of personnel within a preset range of the requisition cabinet. Upon successful identification, the corresponding electronic key is determined, which unlocks the corresponding public and individual locks. Simultaneously, the corresponding public and private light sources also open. By connecting public door locks and public light sources, and independent door locks and private light sources through a switch assembly, it is possible to prevent the accidental opening of the private light source corresponding to an unopened independent door lock, and to ensure that independent door locks and their corresponding private light sources, and public door locks and their public light sources open and close synchronously. Simultaneously, the light sources (private and public) of the lighting assembly can be brightness adjusted. When the lighting assembly adjusts the brightness of the light sources, the first lighting circuit and the independent door lock are opened, and the corresponding second lighting circuit can also achieve brightness adjustment. This brightness adjustment can be achieved using light sources with built-in power variation adjustment, or multiple light sources (public and private) can be directly installed in each storage space (public and private storage space). The lighting assembly (first and second lighting circuits) can control different numbers of light sources in each storage space to provide illumination, ultimately achieving different brightness adjustments. When adjusting the brightness, the ambient brightness can be detected by a light sensor, and then the first and second lighting circuits can be controlled to adjust the brightness of the light sources in the public and private storage spaces that require illumination. This adjustment method adopts a conventional approach and is not limited here. In this embodiment, the open and closed states of the door lock and the light sources correspond. Specifically, when the public door lock and / or the independent door lock are in the open state, the corresponding public and / or private light sources can be lit. For example, when a user visits the "public storage space area corresponding to public consumables" at night, only the lighting in that area is turned on at maximum brightness, while other areas remain off. When a user visits the "storage space area corresponding to public consumables" indoors during the day, the lighting in that area is turned on at 50% brightness, while other areas remain off. This setting can reduce ineffective energy consumption.For physical methods (keys), public and individual door locks can be opened manually. When the public and individual door locks are opened, their corresponding drive circuits (the first drive circuit corresponds to the public door lock, and the second drive circuit corresponds to the individual door lock) are connected, which then causes the first and second relays to activate the corresponding light source. Alternatively, an additional trigger switch can be used to close the corresponding switch when the cabinet door or storage door is opened (e.g., the trigger switch for the refrigerator door and its internal light source), thereby connecting the drive circuit and the lighting circuit and enabling the light source to illuminate.
[0062] The locker with its public door lock can be used to manage public supplies and items for designated personnel (all staff members associated with the locker). The private storage space with its independent door lock can be used to manage private / dedicated supplies and items for some designated personnel (the designated personnel associated with the independent door lock are staff members who can use dedicated supplies and items). Of course, it can also be applied to other correspondences. When the locks and light sources associated with the public and private storage spaces are opened, the current personnel can retrieve and put away supplies and items in the public and private storage spaces. At the same time, the private storage spaces associated with the independent door locks that are not opened are kept physically isolated and powered off.
[0063] Although preferred embodiments of the present invention have been described, those skilled in the art, upon learning the basic inventive concept, can make other changes and modifications to these embodiments. Therefore, the appended claims are intended to be interpreted as including both the preferred embodiments and all changes and modifications falling within the scope of the present invention. Clearly, those skilled in the art can make various alterations and modifications to the present invention without departing from its spirit and scope. Thus, if such modifications and modifications fall within the scope of the claims of the present invention and their equivalents, the present invention also intends to include such modifications and modifications.
Claims
1. A lighting device for a requisition cabinet, characterized in that, The locker is equipped with a door, and inside the locker are public storage space, private storage space, and a door for opening and closing the private storage space; Lighting fixtures include lighting components, driving components, and switching components; The lighting assembly includes a first lighting circuit, a second lighting circuit, a common light source and a private light source. The common light source and the private light source are respectively installed in the common storage space and the private storage space. The first lighting circuit is electrically connected to the common light source, and the second lighting circuit is electrically connected to the private light source. The drive assembly includes a first drive circuit, a second drive circuit, a public door lock, and a private door lock; the public door lock is installed on the cabinet door, and the private door lock is installed on the storage door; the first drive circuit is electrically connected to the public door lock, and the second drive circuit is electrically connected to the private door lock. The switching assembly includes a first relay and a second relay. The first lighting circuit and the first driving circuit are connected through the first relay, and the second lighting circuit and the second driving circuit are connected through the second relay.
2. The lighting device as claimed in claim 1, characterized in that, The first relay includes a first electromagnetic coil and a first contact. The first driving circuit is electrically connected to the first electromagnetic coil and the common door lock. The first lighting circuit is electrically connected to the first contact and the common light source. The second relay includes a second electromagnetic coil and a second contact. The second drive circuit is electrically connected to the second electromagnetic coil and the independent door lock. The second lighting circuit is electrically connected to the second contact and the private light source.
3. The lighting device as described in claim 1, characterized in that, The lighting device includes power supply circuits with different output voltages, and the power supply circuits are connected to a first lighting circuit, a second lighting circuit, a first driving circuit, and a second driving circuit.
4. The lighting device as described in claim 3, characterized in that, The power supply circuit includes a first power supply circuit, a second power supply circuit, and a third power supply circuit connected in series. The output voltages of the first power supply circuit, the second power supply circuit, and the third power supply circuit are different. The first power supply circuit is connected to the first lighting circuit, the second lighting circuit, the first driving circuit, and the second driving circuit. The second power supply circuit and the third power supply circuit are both connected to the first driving circuit and the second driving circuit.
5. The lighting device as described in claim 4, characterized in that, Both the first lighting circuit and the second lighting circuit include a lighting driver sub-circuit, a lighting relay, and a lighting sub-circuit connected in sequence. The lighting sub-circuit includes a lighting power supply, which is connected in series with the first relay and a common light source, or in series with the second relay and at least one private light source. The lighting driver sub-circuit drives the lighting relay to switch between on and off states.
6. The lighting device as described in claim 5, characterized in that, The lighting relay includes a lighting electromagnetic coil and lighting contacts. The lighting drive sub-circuit includes a relay driver. Multiple output pins of the relay driver are sequentially connected to the power supply pins of the lighting electromagnetic coil and the relay driver. The power supply pins are connected to the first power supply circuit. The lighting contacts are located on the lighting sub-circuit and are connected in series with a public or private light source.
7. The lighting device according to any one of claims 4-6, characterized in that, The first drive circuit and the second drive circuit include a lock detection circuit and a lock switching circuit, both of which are electrically connected to the public door lock and the independent door lock.
8. The lighting device as claimed in claim 7, characterized in that, The lock detection circuit is connected to the second power supply circuit and the third power supply circuit, and the lock switching circuit is connected to the first power supply circuit, the second power supply circuit and the third power supply circuit.
9. The lighting device as claimed in claim 8, characterized in that, The lock detection circuit includes multiple sets of lock detection sub-circuits, each set of lock detection sub-circuits being electrically connected to a common door lock and / or an independent door lock; The lock detection sub-circuit includes an optocoupler. The anode of the optocoupler is connected to the second power supply circuit through a first protective resistor. The cathode is electrically connected to the public door lock and / or the independent door lock and then grounded. The emitter is grounded, and the collector is connected to the third power supply circuit through a second protective resistor.
10. The lighting device as claimed in claim 8 or 9, characterized in that, The lock switching circuit includes multiple sets of lock switching sub-circuits, each set of lock switching sub-circuits being electrically connected to a common door lock or an independent door lock; The lock switching sub-circuit includes a single-channel dual-power bus transceiver and an NMOS transistor. The drive-side pin is connected to the gate of the NMOS transistor. The non-drive-side power supply pin and the drive-side power supply pin of the single-channel dual-power bus transceiver are connected to the third power supply circuit and the second power supply circuit, respectively. The source of the NMOS transistor is grounded, and the drain is connected to the first power supply circuit through a freewheeling diode. The drain of the NMOS transistor is connected in series with the common door lock, the first relay, and the first power supply circuit, or in series with the independent door lock, the second relay, and the first power supply circuit.