Intelligent control system for recycling cabinet

Abstract

The utility model discloses an intelligent control system for a recycling cabinet. The intelligent control system comprises a core board, a TF interface circuit, an IO expansion circuit, a USB-HUB circuit, a 4G module, a touch screen, an audio communication circuit, a GPIO communication circuit, an automatic door opening circuit, a weighing circuit, a network port circuit, a door lock circuit, a TYPE-C interface circuit, an inner camera module, an outer camera module and a power supply circuit. Automatic opening and closing of the cabinet door are achieved through the automatic door opening circuit, and operation convenience is improved; the recycling cabinet can accurately weigh delivered articles through the weighing circuit, and classification and pricing are facilitated; and the GPIO communication circuit is connected with illumination, so that the anti-theft performance is The touch screen can improve the man-machine interaction capability, improve the user operation experience and realize real-time information display. And the 4G module realizes real-time monitoring, remote upgrading and remote control of the state of the recovery cabinet.

Description

TECHNICAL FIELD

[0001] The utility model relates to recycling cabinet technical field especially is related to a kind of intelligent control system for recycling cabinet. BACKGROUND

[0002] Recycling cabinet is the cabinet for recycling articles, the control system of traditional recycling cabinet is mainly simple control to the opening and closing of cabinet door, lack intelligent control and remote management capability, need to consume a lot of manual maintenance and management, and the operating cost is high;With the improvement of the value of recycling articles, the safety and anti-theft requirement of current recycling cabinet is also higher and higher, and the traditional recycling cabinet only sets up camera on the outside to prevent theft, and the safety and anti-theft are poor, cannot effectively monitor the complete delivery process, and it is easy to cause article loss or damage;And lack clear operation instruction and timely state feedback, it is easy to cause use obstacle and delivery error, and user interaction experience is poor, so it is necessary to improve. INVENTION CONTENTS

[0003] In view of the deficiencies in the prior art, the utility model aims at providing an intelligent control system for recycling cabinet, improving the intelligence of recycling cabinet, reducing the cost of manual maintenance, reducing operating cost, and improving safety and anti-theft performance.

[0004] In order to achieve the above-mentioned purpose, the utility model adopts the technical scheme of: an intelligent control system for recycling cabinet, including core board, TF interface circuit, IO extension circuit, USB-HUB circuit, 4G module, touch screen, audio communication circuit, GPIO communication circuit, automatic door opening circuit, weighing circuit, network interface circuit, door lock circuit, TYPE-C interface circuit, inner camera module, outer camera module and power supply circuit,

[0005] The network interface circuit, the door lock circuit, the TF interface circuit, the GPIO communication circuit, the automatic door opening circuit, the weighing circuit, the audio communication circuit, the touch screen, the TYPE-C interface circuit and the USB-HUB circuit are electrically connected with the core board respectively, and the core board, the door lock circuit, the TF interface circuit, the GPIO communication circuit, the automatic door opening circuit, the weighing circuit, the audio communication circuit, the touch screen and the USB-HUB circuit are electrically connected with the power supply circuit respectively, and the inner camera module, the outer camera module and the 4G module are electrically connected with the USB-HUB circuit respectively, and the core board is provided with main control chip U4,

[0006] The GPIO communication circuit includes four GPIO input circuits, inner illumination circuit, outer illumination circuit, first switch circuit and second switch circuit, and the four GPIO input circuits, the inner illumination circuit, the outer illumination circuit, the first switch circuit and the second switch circuit are electrically connected with the core board respectively, and at least two GPIO input circuits are respectively connected with smoke sensor and infrared sensor.

[0007] In a further technical solution, the power supply circuit includes a DC power supply circuit, a 12V-5V conversion circuit and a 5V-3V conversion circuit,

[0008] The DC power supply circuit includes a connection seat J1, a fuse F1, a fuse F2, a bidirectional diode D1, a capacitor C11, a capacitor C12 and a capacitor C13, the first pin of the connection seat J1 is electrically connected with the first end of the fuse F1 and the first end of the fuse F2 respectively, the VDD_12V power supply end is electrically connected with the second end of the fuse F1, the second end of the fuse F2, the first end of the bidirectional diode D1, the first end of the capacitor C11, the first end of the capacitor C12 and the first end of the capacitor C13 respectively, the second pin of the connection seat J1, the third pin of the connection seat J1, the second end of the bidirectional diode D1, the second end of the capacitor C11, the second end of the capacitor C12 and the second end of the capacitor C13 are grounded respectively;

[0009] 12V-5V conversion circuit includes power conversion chip U1, capacitor C2, capacitor C3, capacitor C4, capacitor C5, capacitor C14, capacitor C1, capacitor C15, capacitor C6, capacitor C7, capacitor C8, capacitor C9, capacitor C10, resistor R2, resistor R4, resistor R6, resistor R7, resistor R8, resistor R1, resistor R3, resistor R5 and inductor L1, VDD_12V power supply end is respectively connected with power conversion chip U1's VIN pin, resistor R2's first end, capacitor C2's first end, capacitor C3's first end, capacitor C4's first end and capacitor C5's first end, power conversion chip U1's EN pin is respectively connected with resistor R2's second end and resistor R4's second end, capacitor C2's second end, capacitor C3's second end, capacitor C4's second end, capacitor C5's second end and resistor R4's first end are grounded, power conversion chip U1's VCC pin is respectively connected with resistor R6's first end, resistor R7's first end and capacitor C14's first end, power conversion chip U1's PG pin is connected with resistor R6's second end, power conversion chip U1's MODE pin is respectively connected with resistor R7's second end and resistor R8's second end, capacitor C14's second end and resistor R8's first end are respectively grounded, power conversion chip U1's BST pin is connected with resistor R1's first end, resistor R1's second end is connected with capacitor C1's first end, power conversion chip U1's SW pin is respectively connected with capacitor C1's second end and inductor L1's first end, inductor L1's second end is respectively connected with resistor R3's first end, capacitor C6's first end, capacitor C7's first end, capacitor C8's first end, capacitor C9's first end, capacitor C10's first end and VCC5V0_SYS power supply end, power conversion chip U1's FB pin is respectively connected with resistor R3's second end and resistor R5's first end, power conversion chip U1's VOUT pin is respectively connected with main control chip U4 and capacitor C15's first end, power conversion chip U1's PGND pin, AGND pin, capacitor C15's second end, resistor R5's second end, capacitor C6's second end, capacitor C7's second end, capacitor C8's second end, capacitor C9's second end and capacitor C10's second end are respectively grounded;

[0010] 5V-3V conversion circuit includes power conversion chip U3, inductor L2, capacitor C18, capacitor C19, capacitor C21, capacitor C22, capacitor C23, capacitor C20, resistor R19, resistor R22, resistor R18, resistor R20

[0011] The VIN pin of the power conversion chip U3 is electrically connected with the first end of the capacitor C19, the first end of the capacitor C18 and the VCC5V0_SYS power supply end respectively, the EN pin of the power conversion chip U3 is electrically connected with the second end of the resistor R19 and the second end of the resistor R22 respectively, the first end of the resistor R19 is electrically connected with the VCC5V0_SYS power supply end, the first end of the resistor R22 is electrically connected with the VCC_3V3_EN pin, the SW pin of the power conversion chip U3 is electrically connected with the first end of the inductor L2, the FB pin of the power conversion chip U3 is electrically connected with the second end of the capacitor C21, the second end of the resistor R18 and the first end of the resistor R20 respectively, the second end of the inductor L2 is electrically connected with the first end of the capacitor C21, the first end of the resistor R18, the first end of the capacitor C22, the first end of the capacitor C23, the first end of the capacitor C20 and the VCC_3V3 power supply end respectively, the second end of the capacitor C18, the second end of the capacitor C19, the GND pin of the power conversion chip U3, the second end of the resistor R20, the second end of the capacitor C22, the second end of the capacitor C23 and the second end of the capacitor C20 are grounded respectively.

[0012] In a further technical solution, the inner lighting circuit includes an inner LED lamp, a connecting seat J24, a resistor R140, a resistor R145, a resistor R154, a resistor R155, a diode D30, a diode D28, a MOS tube Q7,

[0013] The inner LED lamp is connected with the connecting seat J24, the first pin of the connecting seat J24 is electrically connected with the second end of the resistor R140, the second end of the resistor R145 and the negative electrode of the diode D28 respectively, the first end of the resistor R140 is electrically connected with the VDD_12V power supply end, the first end of the resistor R145 is electrically connected with the VCC5V0_SYS power supply end, the second pin of the connecting seat J24 is electrically connected with the positive electrode of the diode D28, the drain electrode of the MOS tube Q7 and the negative electrode of the diode D30 respectively, the gate electrode of the MOS tube Q7 is electrically connected with the second end of the resistor R154 and the first end of the resistor R155 respectively, the first end of the resistor R154 is electrically connected with the GPIO0_A2 pin of the main control chip U4, the second end of the resistor R155, the source electrode of the MOS tube Q7 and the positive electrode of the diode D30 are grounded respectively;

[0014] The outer lighting circuit includes an outer LED lamp, a connecting seat J28, a resistor R159, a resistor R164, a resistor R171, a resistor R174, a diode D36, a diode D35, a MOS tube Q11,

[0015] The outer LED lamp is connected with the connecting seat J28, the first pin of the connecting seat J28 is electrically connected with the second end of the resistor R159, the second end of the resistor R164 and the negative electrode of the diode D35 respectively, the first end of the resistor R159 is electrically connected with the VDD_12V power supply end, the first end of the resistor R164 is electrically connected with the VCC5V0_SYS power supply end, the second pin of the connecting seat J28 is electrically connected with the positive electrode of the diode D35, the drain electrode of the MOS tube Q11 and the negative electrode of the diode D36 respectively, the gate electrode of the MOS tube Q11 is electrically connected with the second end of the resistor R171 and the first end of the resistor R174 respectively, the first end of the resistor R171 is electrically connected with the GPIO1_B0 pin of the master control chip U4, and the second end of the resistor R174, the source electrode of the MOS tube Q11 and the positive electrode of the diode D36 are grounded respectively.

[0016] In a further technical solution, the first switch circuit comprises a switch SW1, a connecting seat J23, a resistor R137, a resistor R148, a resistor R150, a diode D27, a diode D29 and a MOS tube Q4,

[0017] The switch SW1 is connected with the connecting seat J23, the first pin of the connecting seat J23 is electrically connected with the negative electrode of the diode D27 and the second end of the resistor R137 respectively, the first end of the resistor R137 is electrically connected with the VDD_12V power supply end, the second pin of the connecting seat J23 is electrically connected with the positive electrode of the diode D27, the drain electrode of the MOS tube Q4 and the negative electrode of the diode D29 respectively, the gate electrode of the MOS tube Q4 is electrically connected with the second end of the resistor R148 and the first end of the resistor R150 respectively, the first end of the resistor R148 is electrically connected with the GPIO5_P1_3 pin of the master control chip U4, and the second end of the resistor R150, the source electrode of the MOS tube Q4 and the positive electrode of the diode D29 are grounded respectively.

[0018] The second switch circuit comprises a switch SW2, a connecting seat J27, a resistor R156, a resistor R165, a resistor R168, a diode D33, a diode D34 and a MOS tube Q8,

[0019] The switch SW2 is connected with the connecting seat J27, the first pin of the connecting seat J27 is electrically connected with the negative electrode of the diode D33 and the second end of the resistor R156 respectively, the first end of the resistor R156 is electrically connected with the VDD_12V power supply end, the second pin of the connecting seat J27 is electrically connected with the positive electrode of the diode D33, the drain electrode of the MOS tube Q8 and the negative electrode of the diode D34 respectively, the gate electrode of the MOS tube Q8 is electrically connected with the second end of the resistor R165 and the first end of the resistor R168 respectively, the first end of the resistor R165 is electrically connected with the GPIO1_B1 pin of the master control chip U4, and the second end of the resistor R168, the source electrode of the MOS tube Q8 and the positive electrode of the diode D34 are grounded respectively.

[0020] Further technical solutions, the first GPIO input circuit includes connecting seat J25, MOS tube Q5, bidirectional diode D32, resistance R138, resistance R143, resistance R147, resistance R175, resistance R151, resistance R152 and resistance R141,

[0021] The first pin of the connecting seat J25 is electrically connected with the second end of the resistance R175 and the second end of the resistance R151 respectively, the second pin of the connecting seat J25 is electrically connected with the first end of the resistance R147, the first end of the resistance R143, the first end of the resistance R138 and the first end of the resistance R175 respectively, the second end of the resistance R138 is electrically connected with the VDD_12V power supply end, the second end of the resistance R143 is electrically connected with the VCC5V0_SYS power supply end, the second end of the resistance R147 is electrically connected with the VCC_3V3 power supply end, the first end of the resistance R151 is electrically connected with the first end of the resistance R152, the first end of the bidirectional diode D32 and the gate of the MOS tube Q5 respectively, the drain of the MOS tube Q5 is electrically connected with the second end of the resistance R141 and the GPIO5_P1 pin of the main control chip U4 respectively, the second to fourth GPIO input circuits are the same as the first GPIO input circuit.

[0022] Further technical solutions, the audio communication circuit includes the SPK interface circuit and the pickup circuit, and the pickup circuit and the SPK interface circuit are electrically connected with the power supply circuit and the core board.

[0023] Further technical solutions, the USB-HUB circuit is provided with the HUB control chip U7, the DPU pin of the HUB control chip U7 is electrically connected with the USB_HUB_DP pin of the main control chip U4, the DMU pin of the HUB control chip U7 is electrically connected with the USB_HUB_DM pin of the main control chip U4, the DP1 pin and the DM1 pin of the HUB control chip U7 are electrically connected with the first USB-TYPE-A socket, the DP2 pin and the DM2 pin of the HUB control chip U7 are electrically connected with the second USB-TYPE-A socket, the DP3 pin and the DM3 pin of the HUB control chip U7 are electrically connected with the third USB-TYPE-A socket, the DP4 pin of the HUB control chip U7 is electrically connected with the USB_4G_DP4 pin of the 4G module through the fourth USB-TYPE-A socket, and the DM4 pin of the HUB control chip U7 is electrically connected with the USB_4G_DM4 pin of the 4G module through the fourth USB-TYPE-A socket.

[0024] In the further technical scheme, the core board is provided with a level conversion circuit, the level conversion circuit comprises a level conversion chip U5, a capacitor C27, a capacitor C28 and a resistor R30, a VCCA pin of the level conversion chip U5 is electrically connected with a first end of the resistor R30, a first end of the capacitor C27 and a VCC_1V8 power supply end respectively, an OE pin of the level conversion chip U5 is electrically connected with a second end of the resistor R30, a VCCB pin of the level conversion chip U5 is electrically connected with a first end of the capacitor C28 and a VCC_3V3 power supply end respectively, a second end of the capacitor C27, a second end of the capacitor C28, a GND pin and an EP pin of the level conversion chip U5 are grounded respectively, and A1, A2, A3, A4, B1, B2, B3 and B4 pins of the level conversion chip U5 are electrically connected with the main control chip U4 respectively.

[0025] In the further technical scheme, the automatic door opening circuit comprises a first motor driving circuit, a second motor driving circuit and a door opening power supply circuit,

[0026] The first motor driving circuit comprises a motor driving chip U22, a connecting seat J14, a capacitor C90, a capacitor C91, a capacitor C118, a bidirectional diode D50, a bidirectional diode D51 and a bidirectional diode D48, a VDD pin of the motor driving chip U22 is electrically connected with a first end of the capacitor C91, a first end of the capacitor C90 and a VDD_12V power supply end respectively, an INA pin of the motor driving chip U22 is electrically connected with a GPIO5_P0_0 pin of the main control chip U4, an INB pin of the motor driving chip U22 is electrically connected with a GPIO5_P0_1 pin of the main control chip U4, an OA2 pin of the motor driving chip U22 is electrically connected with an OA1 pin, a first pin of the connecting seat J14, a second end of the bidirectional diode D50, a first end of the bidirectional diode D48 and a first end of the capacitor C118 respectively, an OB2 pin of the motor driving chip U22 is electrically connected with an OB1 pin, a second pin of the connecting seat J14, a second end of the bidirectional diode D51, a second end of the bidirectional diode D48 and a second end of the capacitor C118 respectively, a GND pin of the motor driving chip U22, a second end of the capacitor C90, a second end of the capacitor C91, a first end of the bidirectional diode D50 and a first end of the bidirectional diode D51 are grounded respectively;

[0027] The second motor driving circuit comprises a motor driving chip U26, a connecting seat J36, a capacitor C116, a capacitor C117, a capacitor C119, a bidirectional diode D52, a bidirectional diode D53 and a bidirectional diode D49, the VDD pin of the motor driving chip U26 is electrically connected with the first end of the capacitor C117, the first end of the capacitor C116 and the VDD_12V power supply end respectively, the INA pin of the motor driving chip U26 is electrically connected with the GPIO5_P0_2 pin of the master control chip U4, the INB pin of the motor driving chip U26 is electrically connected with the GPIO5_P0_3 pin of the master control chip U4, the OA2 pin of the motor driving chip U26 is electrically connected with the OA1 pin, the first pin of the connecting seat J36, the second end of the bidirectional diode D52, the first end of the bidirectional diode D49 and the first end of the capacitor C119 respectively, the OB2 pin of the motor driving chip U26 is electrically connected with the OB1 pin, the second pin of the connecting seat J36, the second end of the bidirectional diode D53, the second end of the bidirectional diode D49 and the second end of the capacitor C119 respectively, and the GND pin of the motor driving chip U26, the second end of the capacitor C116, the second end of the capacitor C117, the first end of the bidirectional diode D52 and the first end of the bidirectional diode D53 are grounded respectively;

[0028] The door opening power supply circuit comprises a power supply control chip U21, a capacitor C92, a capacitor C93, a capacitor C94, a capacitor C95, a capacitor C96, a resistor R110 and an inductor L5, the IN pin of the power supply control chip U21 is electrically connected with the EN pin, the first end of the capacitor C93, the first end of the capacitor C92 and the VCC5V0_SYS power supply end respectively, the OUT pin of the power supply control chip U21 is electrically connected with the first end of the capacitor C94, the first end of the capacitor C95 and the first end of the resistor R110 respectively, the second end of the resistor R110 is electrically connected with the first end of the capacitor C96 and the VCC_ADC power supply end respectively, the second end of the capacitor C92, the second end of the capacitor C93, the GND pin of the power supply control chip U21, the second end of the capacitor C94, the second end of the capacitor C95 and the second end of the capacitor C96 are grounded respectively, and the inductor L5 is connected in series between the second end of the capacitor C95 and the second end of the capacitor C96.

[0029] In a further technical solution, the automatic door opening circuit is further provided with an anti-pinch circuit, and the anti-pinch circuit comprises an operational amplifier U23, a capacitor C98, a capacitor C97, a capacitor C99, a resistor R112, a resistor R113, a resistor R111, a resistor R115, a resistor R116, a resistor R117, a resistor R114,

[0030] The noninverting input end of the operational amplifier U23 is electrically connected with the first end of the capacitor C98, the first end of the resistor R116 and the second end of the resistor R111 respectively, the inverting input end of the operational amplifier U23 is electrically connected with the first end of the resistor R117, the second end of the capacitor C98 and the second end of the resistor R115 respectively, the first end of the resistor R111 is electrically connected with the first end of the resistor R113, the first end of the resistor R112 and the ground terminal respectively, the first end of the resistor R115 is electrically connected with the second end of the resistor R113, the second end of the resistor R112 and the ground terminal respectively, the second end of the resistor R116 is grounded, the positive power supply end of the operational amplifier U23 is electrically connected with the VCC_ADC power supply end and the first end of the capacitor C97 respectively, the output end of the operational amplifier U23 is electrically connected with the second end of the resistor R117 and the first end of the resistor R114 respectively, the second end of the resistor R114 is electrically connected with the first end of the capacitor C99 and the Current_FB pin of the master control chip U4 respectively, and the second end of the capacitor C97, the second end of the capacitor C99 and the negative power supply end of the operational amplifier U23 are grounded respectively.

[0031] Compared with the prior art, the utility model has the advantages that: the TF card is connected through the TF interface circuit to record system log, monitoring data and equipment configuration information of the internal camera module and the external camera module; external devices and sensors are connected through the IO expansion circuit to improve the expansion capability and facilitate later upgrading; one USB interface of the core board is divided into four USB interfaces through the USB-HUB circuit to connect the 4G module, the internal camera module and the external camera module, access the Internet through the 4G module, realize remote communication, assist positioning, obtain video information inside and outside the recycling cabinet through the internal camera module and the external camera module, improve safety and anti-theft performance, and reduce manual inspection and maintenance cost; the smoke sensor and the infrared sensor are connected through the GPIO input circuit, the smoke sensor can obtain environmental information and detect fire, and the infrared sensor and the weighing circuit cooperate to detect whether delivery is completed and improve safety; the internal and external cabinets are illuminated through the internal and external lighting circuits, and the internal and external camera modules are connected to improve image acquisition quality; voice interaction is realized with the deliverer through the audio communication circuit to improve mutual ability; the push rod is driven to automatically open the door through the automatic door opening circuit, manual opening of the door is not needed, and convenience is improved; the network cable is connected through the network port circuit to improve reliability and stability; the core board controls the modules and connects the modules to improve intelligence and enrich functions. BRIEF DESCRIPTION OF DRAWINGS

[0032] The utility model is further explained in connection with the drawings and examples.

[0033] Figure 1 It is the circuit block diagram of the utility model;

[0034] Figure 2 The circuit diagram of the DC power supply circuit of the utility model is as shown in the figure;

[0035] Figure 3 The circuit diagram of the 12V-5V conversion circuit of the utility model is as shown in the figure;

[0036] Figure 4 The circuit diagram of the 5V-3.3V conversion circuit of the utility model is as shown in the figure;

[0037] Figure 5 The circuit diagram of the main control chip U4 of the utility model is as shown in the figure;

[0038] Figure 6 The circuit diagram of the USB-HUB circuit of the utility model is as shown in the figure;

[0039] Figure 7 The circuit diagram of the GPIO input circuit of the utility model is as shown in the figure;

[0040] Figure 8 The circuit diagram of the internal lighting circuit, the external lighting circuit, the first switch circuit and the second switch circuit of the utility model is as shown in the figure;

[0041] Figure 9 The circuit diagram of the 4G module of the utility model is as shown in the figure;

[0042] Figure 10 The circuit diagram of the level conversion circuit of the utility model is as shown in the figure;

[0043] Figure 11 The circuit diagram of the SPK interface circuit of the utility model is as shown in the figure;

[0044] Figure 12 The circuit diagram of the TYPE-C interface circuit of the utility model is as shown in the figure;

[0045] Figure 13 The circuit diagram of the TF card interface circuit of the utility model is as shown in the figure;

[0046] Figure 14 The circuit diagram of the IO expansion circuit of the utility model is as shown in the figure;

[0047] Figure 15 The circuit diagram of the touch screen of the utility model is as shown in the figure;

[0048] Figure 16 The circuit diagram of the automatic door opening circuit of the utility model is as shown in the figure;

[0049] Figure 17 The circuit diagram of the weighing circuit of the utility model is as shown in the figure;

[0050] Figure 18 The circuit diagram of the network port circuit of the utility model is as shown in the figure;

[0051] Figure 19 is a circuit diagram of the door lock circuit of the utility model;

[0052] Figure 20 is a work flow chart of the utility model. DETAILED DESCRIPTION

[0053] The following is only a preferred embodiment of the utility model, and does not limit the protection scope of the utility model.

[0054] An intelligent control system for a recycling cabinet, as shown in Figures 1 to 20 The intelligent control system for the recycling cabinet includes a core board, a TF interface circuit, an IO expansion circuit, a USB-HUB circuit, a 4G module, a touch screen, an audio communication circuit, a GPIO communication circuit, an automatic door opening circuit, a weighing circuit, a network port circuit, a door lock circuit, a TYPE-C interface circuit, an inner camera module, an outer camera module and a power supply circuit, the network port circuit, the door lock circuit, the TF interface circuit, the GPIO communication circuit, the automatic door opening circuit, the weighing circuit, the audio communication circuit, the touch screen, the TYPE-C interface circuit and the USB-HUB circuit are electrically connected with the core board respectively, the core board, the door lock circuit, the TF interface circuit, the GPIO communication circuit, the automatic door opening circuit, the weighing circuit, the audio communication circuit, the touch screen and the USB-HUB circuit are electrically connected with the power supply circuit respectively, the inner camera module, the outer camera module and the 4G module are electrically connected with the USB-HUB circuit respectively, the core board is provided with a main control chip U4, the GPIO communication circuit includes four GPIO input circuits, an inner lighting circuit, an outer lighting circuit, a first switch circuit and a second switch circuit, the four GPIO input circuits, the inner lighting circuit, the outer lighting circuit, the first switch circuit and the second switch circuit are electrically connected with the core board respectively, and at least two GPIO input circuits are respectively connected with a smoke sensor and an infrared sensor.

[0055] The control system of the traditional recycling cabinet can only control the door lock and cannot interact with the deliverer deeply, has single function, and has poor safety and anti-theft property since only an external camera is arranged, and the recycling cabinet has the advantages that the TF card is connected through the TF interface circuit to record system logs, monitoring data of the internal camera module and the external camera module, and equipment configuration information; the external equipment and sensors are connected through the IO expansion circuit to improve the expansion capability and facilitate later upgrading and reconstruction; one USB interface of the core board is divided into four USB interfaces through the USB-HUB circuit to connect the 4G module, the internal camera module and the external camera module, the 4G module is connected to the Internet to realize remote communication and assist positioning, the internal camera module and the external camera module acquire video information inside and outside the recycling cabinet respectively to improve safety and anti-theft property and reduce manual inspection and maintenance cost; the smoke sensor and the infrared sensor are connected through the GPIO input circuit, the smoke sensor can acquire environmental information and detect ignition, the infrared sensor and the weighing circuit cooperate to detect whether delivery is completed to improve safety; the internal lighting circuit and the external lighting circuit illuminate inside and outside the cabinet and link the internal camera module and the external camera module to improve image acquisition quality; the audio communication circuit is used for voice interaction with the deliverer to improve mutual capability; the automatic door opening circuit drives the push rod to automatically open the door without manual opening to improve convenience; the network port circuit is connected to a network cable to improve reliability and stability; the core board controls various modules and links various modules to improve intelligence and enrich functions. The model of the main control chip U4 is RV1106, has powerful image processing and network communication capability. The core board integrates DDR3 memory and eMMC storage, has high reliability and is suitable for industrial application. The rich peripheral interfaces on the board support the connection of various functional modules such as cameras, display screens and audio, and provide convenience for system expansion.

[0056] The TF interface circuit supports read and write operations of high-speed memory cards. It is used for storing system logs, video monitoring data and equipment configuration information, adopts a standard SDIO communication protocol, and has reliable data transmission capability. It integrates power management and signal protection functions, which can effectively prevent static electricity and overvoltage from damaging the system.

[0057] The IO expansion circuit adopts the high-performance IO expansion chip Xl9535QF24, provides additional general-purpose input and output interfaces, and is used for connecting various external equipment and sensors. The circuit supports interrupt function and programmable configuration, and can flexibly adapt to the needs of different application scenarios. The expansion interface adopts anti-static protection design and has strong anti-interference capability and reliability.

[0058] The 4G module uses the MR307A module, which provides 4G signal and GNSS interface, provides network service while providing the location of the recycling cabinet, greatly improving the flexibility of the equipment.

[0059] The weighing circuit adopts HX711 chip and is connected to the core board through a serial interface to realize weight measurement. The weight can be accurately measured.

[0060] The TYPE-C interface circuit is a backup power supply scheme and supports 5V / 3A input function. The Type-C interface can not only provide emergency power supply when the DC power supply circuit fails, but also be used for system debugging and data transmission. The interface circuit is equipped with over-voltage protection and current limiting function to ensure the safety and reliability of power supply.

[0061] Specifically, as shown in Figure 2 The power supply circuit includes a DC power supply circuit, a 12V-5V conversion circuit and a 5V-3V conversion circuit. The DC power supply circuit includes a connection seat J1, a fuse F1, a fuse F2, a bidirectional diode D1, a capacitor C11, a capacitor C12 and a capacitor C13. The first pin of the connection seat J1 is electrically connected with the first end of the fuse F1 and the first end of the fuse F2 respectively. The VDD_12V power supply end is electrically connected with the second end of the fuse F1, the second end of the fuse F2, the first end of the bidirectional diode D1, the first end of the capacitor C11, the first end of the capacitor C12 and the first end of the capacitor C13 respectively. The second pin of the connection seat J1, the third pin of the connection seat J1, the second end of the bidirectional diode D1, the second end of the capacitor C11, the second end of the capacitor C12 and the second end of the capacitor C13 are grounded respectively. The DC power supply of 12V is connected through the DC power supply circuit to perform external power supply of 12V, and the maximum support is 12V 8A power input. The power input is converted through the DC power supply circuit and outputs stable 12V voltage respectively. The 12V voltage is mainly used for power supply of the push rod motor connected with the automatic door opening circuit and lighting. The models of the fuse F1 and the fuse F2 are SMD1812P200TF16. The external power supply is input through the connector J1. The fuse F1 and the fuse F2 provide overcurrent protection to ensure that they are disconnected when the current exceeds 4A, preventing damage to other elements. The diode D1 is used for rectification or protection of the circuit from reverse voltage. The capacitors C11, C12 and C13 are respectively used for filtering to ensure stable output voltage to realize overcurrent protection and reverse connection protection.

[0062] As shown in Figure 3As shown, the 12V-5V conversion circuit includes power conversion chip U1, capacitor C2, capacitor C3, capacitor C4, capacitor C5, capacitor C14, capacitor C1, capacitor C15, capacitor C6, capacitor C7, capacitor C8, capacitor C9, capacitor C10, resistor R2, resistor R4, resistor R6, resistor R7, resistor R8, resistor R1, resistor R3, resistor R5 and inductor L1, the VDD_12V power supply end is respectively connected with the VIN pin of the power conversion chip U1, the first end of the resistor R2, the first end of the capacitor C2, the first end of the capacitor C3, the first end of the capacitor C4 and the first end of the capacitor C5, the EN pin of the power conversion chip U1 is respectively connected with the second end of the resistor R2 and the second end of the resistor R4, the second end of the capacitor C2, the second end of the capacitor C3, the second end of the capacitor C4, the second end of the capacitor C5 and the first end of the resistor R4 are grounded, the VCC pin of the power conversion chip U1 is respectively connected with the first end of the resistor R6, the first end of the resistor R7 and the first end of the capacitor C14, the PG pin of the power conversion chip U1 is connected with the second end of the resistor R6, the MODE pin of the power conversion chip U1 is respectively connected with the second end of the resistor R7 and the second end of the resistor R8, the second end of the capacitor C14 and the first end of the resistor R8 are respectively grounded, the BST pin of the power conversion chip U1 is connected with the first end of the resistor R1, the second end of the resistor R1 is connected with the first end of the capacitor C1, the SW pin of the power conversion chip U1 is respectively connected with the second end of the capacitor C1 and the first end of the inductor L1, the second end of the inductor L1 is respectively connected with the first end of the resistor R3, the first end of the capacitor C6, the first end of the capacitor C7, the first end of the capacitor C8, the first end of the capacitor C9, the first end of the capacitor C10 and the VCC5V0_SYS power supply end, the FB pin of the power conversion chip U1 is respectively connected with the second end of the resistor R3 and the first end of the resistor R5, the VOUT pin of the power conversion chip U1 is respectively connected with the main control chip U4 and the first end of the capacitor C15, the PGND pin, the AGND pin of the power conversion chip U1, the second end of the capacitor C15, the second end of the resistor R5, the second end of the capacitor C6, the second end of the capacitor C7, the second end of the capacitor C8, the second end of the capacitor C9 and the second end of the capacitor C10 are respectively grounded; the 12V-5V conversion circuit converts the 12V voltage output by the DC power supply circuit into a stable 5V voltage, which is used for power supply of the control system and the sensor module, and protects the system safety.

[0063] As Figure 4As shown, the 5V-3V conversion circuit includes a power conversion chip U3, an inductor L2, a capacitor C18, a capacitor C19, a capacitor C21, a capacitor C22, a capacitor C23, a capacitor C20, a resistor R19, a resistor R22, a resistor R18 and a resistor R20, the VIN pin of the power conversion chip U3 is respectively electrically connected with the first end of the capacitor C19, the first end of the capacitor C18 and the VCC5V0_SYS power supply end, the EN pin of the power conversion chip U3 is respectively electrically connected with the second end of the resistor R19 and the second end of the resistor R22, the first end of the resistor R19 is electrically connected with the VCC5V0_SYS power supply end, the first end of the resistor R22 is electrically connected with the VCC_3V3_EN pin, the SW pin of the power conversion chip U3 is electrically connected with the first end of the inductor L2, the FB pin of the power conversion chip U3 is respectively electrically connected with the second end of the capacitor C21, the second end of the resistor R18 and the first end of the resistor R20, the second end of the inductor L2 is respectively electrically connected with the first end of the capacitor C21, the first end of the resistor R18, the first end of the capacitor C22, the first end of the capacitor C23, the first end of the capacitor C20 and the VCC_3V3 power supply end, the second end of the capacitor C18, the second end of the capacitor C19, the GND pin of the power conversion chip U3, the second end of the resistor R20, the second end of the capacitor C22, the second end of the capacitor C23 and the second end of the capacitor C20 are grounded. The model of the power conversion chip U3 is RY3430DC-DC, which converts the 5V voltage output by the 5V-3V conversion circuit into 3.3V, and provides stable working voltage for the microcontroller and other digital chips. Low noise design is adopted, which has good transient response characteristics, and overheat protection and short circuit protection functions are integrated to ensure the reliable operation of the system under various working conditions.

[0064] Specifically, the inner lighting circuit includes an inner LED lamp, a connecting seat J24, a resistor R140, a resistor R145, a resistor R154, a resistor R155, a diode D30, a diode D28 and a MOS tube Q7, the inner LED lamp is connected with the connecting seat J24, the first pin of the connecting seat J24 is electrically connected with the second end of the resistor R140, the second end of the resistor R145 and the negative electrode of the diode D28 respectively, the first end of the resistor R140 is electrically connected with the VDD_12V power supply end, the first end of the resistor R145 is electrically connected with the VCC5V0_SYS power supply end, the second pin of the connecting seat J24 is electrically connected with the positive electrode of the diode D28, the drain electrode of the MOS tube Q7 and the negative electrode of the diode D30 respectively, the gate electrode of the MOS tube Q7 is electrically connected with the second end of the resistor R154 and the first end of the resistor R155 respectively, the first end of the resistor R154 is electrically connected with the GPIO0_A2 pin of the master control chip U4, the second end of the resistor R155, the source electrode of the MOS tube Q7 and the positive electrode of the diode D30 are grounded respectively; the outer lighting circuit includes an outer LED lamp, a connecting seat J28, a resistor R159, a resistor R164, a resistor R171, a resistor R174, a diode D36, a diode D35 and a MOS tube Q11, the outer LED lamp is connected with the connecting seat J28, the first pin of the connecting seat J28 is electrically connected with the second end of the resistor R159, the second end of the resistor R164 and the negative electrode of the diode D35 respectively, the first end of the resistor R159 is electrically connected with the VDD_12V power supply end, the first end of the resistor R164 is electrically connected with the VCC5V0_SYS power supply end, the second pin of the connecting seat J28 is electrically connected with the positive electrode of the diode D35, the drain electrode of the MOS tube Q11 and the negative electrode of the diode D36 respectively, the gate electrode of the MOS tube Q11 is electrically connected with the second end of the resistor R171 and the first end of the resistor R174 respectively, the first end of the resistor R171 is electrically connected with the GPIO1_B0 pin of the master control chip U4, the second end of the resistor R174, the source electrode of the MOS tube Q11 and the positive electrode of the diode D36 are grounded respectively. The inner LED lamp illuminates the inside of the recycling cabinet, and the outer LED lamp illuminates the outside of the recycling cabinet, which not only provides the lighting function, but also links with the inner camera module and the outer camera module, which can not only improve the clarity of image acquisition, but also play a role in light reminding.

[0065] Specifically, the first switch circuit comprises a switch SW1, a connecting seat J23, a resistor R137, a resistor R148, a resistor R150, a diode D27, a diode D29 and a MOS tube Q4, the switch SW1 is connected with the connecting seat J23, the first pin of the connecting seat J23 is electrically connected with the negative electrode of the diode D27 and the second end of the resistor R137 respectively, the first end of the resistor R137 is electrically connected with the VDD_12V power supply end, the second pin of the connecting seat J23 is electrically connected with the positive electrode of the diode D27, the drain electrode of the MOS tube Q4 and the negative electrode of the diode D29 respectively, the gate electrode of the MOS tube Q4 is electrically connected with the second end of the resistor R148 and the first end of the resistor R150 respectively, the first end of the resistor R148 is electrically connected with the GPIO5_P1_3 pin of the main control chip U4, the second end of the resistor R150, the source electrode of the MOS tube Q4 and the positive electrode of the diode D29 are grounded respectively; the second switch circuit comprises a switch SW2, a connecting seat J27, a resistor R156, a resistor R165, a resistor R168, a diode D33, a diode D34 and a MOS tube Q8, the switch SW2 is connected with the connecting seat J27, the first pin of the connecting seat J27 is electrically connected with the negative electrode of the diode D33 and the second end of the resistor R156 respectively, the first end of the resistor R156 is electrically connected with the VDD_12V power supply end, the second pin of the connecting seat J27 is electrically connected with the positive electrode of the diode D33, the drain electrode of the MOS tube Q8 and the negative electrode of the diode D34 respectively, the gate electrode of the MOS tube Q8 is electrically connected with the second end of the resistor R165 and the first end of the resistor R168 respectively, the first end of the resistor R165 is electrically connected with the GPIO1_B1 pin of the main control chip U4, the second end of the resistor R168, the source electrode of the MOS tube Q8 and the positive electrode of the diode D34 are grounded respectively. The opening and closing of the inner LED lamp and the outer LED lamp are respectively controlled through the switch SW1 and the switch SW2, which is automatically triggered when the switch cabinet door is opened, which is convenient for operation, and of course can also be set to trigger other function keys to improve the expansibility.

[0066] Specifically, the first GPIO input circuit includes the connecting seat J25, the MOS tube Q5, the bidirectional diode D32, the resistor R138, the resistor R143, the resistor R147, the resistor R175, the resistor R151, the resistor R152 and the resistor R141, the first pin of the connecting seat J25 is electrically connected with the second end of the resistor R175 and the second end of the resistor R151 respectively, the second pin of the connecting seat J25 is electrically connected with the first end of the resistor R147, the first end of the resistor R143, the first end of the resistor R138 and the first end of the resistor R175 respectively, the second end of the resistor R138 is electrically connected with the VDD_12V power supply end, the second end of the resistor R143 is electrically connected with the VCC5V0_SYS power supply end, the second end of the resistor R147 is electrically connected with the VCC_3V3 power supply end, the first end of the resistor R151 is electrically connected with the first end of the resistor R152, the first end of the bidirectional diode D32 and the gate of the MOS tube Q5 respectively, the drain of the MOS tube Q5 is electrically connected with the second end of the resistor R141 and the GPIO5_P1 pin of the master control chip U4 respectively, the second to fourth GPIO input circuits have the same structure as the first GPIO input circuit. The infrared sensor and the smoke sensor are connected through the GPIO input circuit, the state of the delivery article is monitored in real time through the infrared sensor, the abnormal situation early warning capability is improved, the environment is detected through the smoke sensor, the alarm can be reported after the smoke is found, the fire alarm can be quickly solved, and the loss is reduced; of course, other sensors can also be connected through the GPIO input circuit to improve the expansibility and facilitate the later upgrade.

[0067] Specifically, the audio communication circuit includes the SPK interface circuit and the pickup circuit, and the pickup circuit and the SPK interface circuit are electrically connected with the power supply circuit and the core board. The speaker is connected through the SPK interface circuit, sound can be transmitted through the speaker, the safety of the deliverer can be effectively reminded, and the accident rate is reduced; the sound of the deliverer is collected through the pickup circuit, voice interaction is carried out with the deliverer through the SPK interface circuit, the interaction capability is improved, and the environment sound can also be collected to collect abnormal sound, so that whether the robbery event occurs can be analyzed, and the safety and the anti-theft property are further improved.

[0068] Specifically, the USB-HUB circuit is provided with a HUB control chip U7, a DPU pin of the HUB control chip U7 is electrically connected with a USB_HUB_DP pin of the master control chip U4, a DMU pin of the HUB control chip U7 is electrically connected with a USB_HUB_DM pin of the master control chip U4, a DP1 pin and a DM1 pin of the HUB control chip U7 are electrically connected with a first USB-TYPE-A socket, a DP2 pin and a DM2 pin of the HUB control chip U7 are electrically connected with a second USB-TYPE-A socket, a DP3 pin and a DM3 pin of the HUB control chip U7 are electrically connected with a third USB-TYPE-A socket, a DP4 pin of the HUB control chip U7 is electrically connected with a USB_4G_DP4 pin of the 4G module through a fourth USB-TYPE-A socket, and a DM4 pin of the HUB control chip U7 is electrically connected with a USB_4G_DM4 pin of the 4G module through the fourth USB-TYPE-A socket. The model of the HUB control chip U7 is CH334F, the 4G module, the internal camera module and the external camera module are connected through the USB-HUB circuit, fast installation is realized, and installation convenience is improved.

[0069] Specifically, the core board is provided with a level conversion circuit, the level conversion circuit includes a level conversion chip U5, a capacitor C27, a capacitor C28 and a resistor R30, a VCCA pin of the level conversion chip U5 is electrically connected with a first end of the resistor R30, a first end of the capacitor C27 and a VCC_1V8 power supply end respectively, an OE pin of the level conversion chip U5 is electrically connected with a second end of the resistor R30, a VCCB pin of the level conversion chip U5 is electrically connected with a first end of the capacitor C28 and a VCC_3V3 power supply end respectively, a second end of the capacitor C27, a second end of the capacitor C28, a GND pin and an EP pin of the level conversion chip U5 are grounded respectively, and A1, A2, A3, A4, B1, B2, B3 and B4 pins of the level conversion chip U5 are electrically connected with the master control chip U4 respectively. The level conversion circuit is used for realizing signal conversion between different voltage domains and ensuring reliable communication between modules of the system. The model of the level conversion chip U5 is RS014YTQE12, which is a high-speed bidirectional level conversion chip, supports signal conversion between 3.3V and 1.8V, and has low delay and low power consumption characteristics.

[0070] Specifically, the automatic door opening circuit includes a first motor driving circuit, a second motor driving circuit and a door opening power supply circuit. The first motor driving circuit includes a motor driving chip U22, a connecting seat J14, a capacitor C90, a capacitor C91, a capacitor C118, a bidirectional diode D50, a bidirectional diode D51 and a bidirectional diode D48. The VDD pin of the motor driving chip U22 is electrically connected with the first end of the capacitor C91, the first end of the capacitor C90 and the VDD_12V power supply end respectively. The INA pin of the motor driving chip U22 is electrically connected with the GPIO5_P0_0 pin of the main control chip U4. The INB pin of the motor driving chip U22 is electrically connected with the GPIO5_P0_1 pin of the main control chip U4. The OA2 pin of the motor driving chip U22 is electrically connected with the OA1 pin, the first pin of the connecting seat J14, the second end of the bidirectional diode D50, the first end of the bidirectional diode D48 and the first end of the capacitor C118 respectively. The OB2 pin of the motor driving chip U22 is electrically connected with the OB1 pin, the second pin of the connecting seat J14, the second end of the bidirectional diode D51, the second end of the bidirectional diode D48 and the second end of the capacitor C118 respectively. The GND pin of the motor driving chip U22, the second end of the capacitor C90, the second end of the capacitor C91, the first end of the bidirectional diode D50 and the first end of the bidirectional diode D51 are grounded respectively. The second motor driving circuit includes a motor driving chip U26, a connecting seat J36, a capacitor C116, a capacitor C117, a capacitor C119, a bidirectional diode D52, a bidirectional diode D53 and a bidirectional diode D49. The VDD pin of the motor driving chip U26 is electrically connected with the first end of the capacitor C117, the first end of the capacitor C116 and the VDD_12V power supply end respectively. The INA pin of the motor driving chip U26 is electrically connected with the GPIO5_P0_2 pin of the main control chip U4. The INB pin of the motor driving chip U26 is electrically connected with the GPIO5_P0_3 pin of the main control chip U4. The OA2 pin of the motor driving chip U26 is electrically connected with the OA1 pin, the first pin of the connecting seat J36, the second end of the bidirectional diode D52, the first end of the bidirectional diode D49 and the first end of the capacitor C119 respectively. The OB2 pin of the motor driving chip U26 is electrically connected with the OB1 pin, the second pin of the connecting seat J36, the second end of the bidirectional diode D53, the second end of the bidirectional diode D49 and the second end of the capacitor C119 respectively. The GND pin of the motor driving chip U26, the second end of the capacitor C116, the second end of the capacitor C117, the first end of the bidirectional diode D52 and the first end of the bidirectional diode D53 are grounded respectively.The door opening power supply circuit comprises a power supply control chip U21, a capacitor C92, a capacitor C93, a capacitor C94, a capacitor C95, a capacitor C96, a resistor R110 and an inductor L5, the IN pin of the power supply control chip U21 is electrically connected with the EN pin, the first end of the capacitor C93, the first end of the capacitor C92 and the VCC5V0_SYS power supply end respectively, the OUT pin of the power supply control chip U21 is electrically connected with the first end of the capacitor C94, the first end of the capacitor C95 and the first end of the resistor R110 respectively, the second end of the resistor R110 is electrically connected with the first end of the capacitor C96 and the VCC_ADC power supply end respectively, the second end of the capacitor C92, the second end of the capacitor C93, the GND pin of the power supply control chip U21, the second end of the capacitor C94, the second end of the capacitor C95 and the second end of the capacitor C96 are grounded respectively, and the inductor L5 is connected in series between the second end of the capacitor C95 and the second end of the capacitor C96. The door opening power supply circuit supplies power to the first motor driving circuit and the second motor driving circuit respectively, and the first motor driving circuit and the second motor driving circuit drive a push rod motor respectively to realize automatic opening and closing of multiple doors. The models of the motor driving chip U22 and the motor driving chip U26 are both CP2119CDTR.

[0071] Specifically, the automatic door opening circuit is also provided with an anti-pinch circuit, and the anti-pinch circuit comprises an operational amplifier U23, a capacitor C98, a capacitor C97, a capacitor C99, a resistor R112, a resistor R113, a resistor R111, a resistor R115, a resistor R116, a resistor R117 and a resistor R114, the non-inverting input end of the operational amplifier U23 is electrically connected with the first end of the capacitor C98, the first end of the resistor R116 and the second end of the resistor R111 respectively, the inverting input end of the operational amplifier U23 is electrically connected with the first end of the resistor R117, the second end of the capacitor C98 and the second end of the resistor R115 respectively, the first end of the resistor R111 is electrically connected with the first end of the resistor R113, the first end of the resistor R112 and the ground terminal respectively, the first end of the resistor R115 is electrically connected with the second end of the resistor R113, the second end of the resistor R112 and the ground terminal respectively, the second end of the resistor R116 is grounded, the positive power supply end of the operational amplifier U23 is electrically connected with the VCC_ADC power supply end and the first end of the capacitor C97 respectively, the output end of the operational amplifier U23 is electrically connected with the second end of the resistor R117 and the first end of the resistor R114 respectively, the second end of the resistor R114 is electrically connected with the first end of the capacitor C99 and the Current_FB pin of the main control chip U4 respectively, and the second end of the capacitor C97, the second end of the capacitor C99 and the negative power supply end of the operational amplifier U23 are grounded respectively. The current output by the door opening power supply circuit is monitored through the automatic door opening circuit, when the detected current becomes large, it is determined that a hand is pinched, and then the push rod motor is controlled to run reversely to realize the anti-pinch function.

[0072] The utility model discloses a automatic opening and closing of cabinet door is realized through automatic door opening circuit, improves the convenient operation, and the weighing circuit makes the recycling cabinet can accurately weigh the delivery article, and it is convenient to classify and pricing, and the linkage of inner LED lamp and inner camera module, ensure the illumination and monitoring of delivery process, improve security. The setting of outer LED lamp and outer camera module provides the illumination for night delivery, records the information of deliverer simultaneously, enhances the anti -theft performance. Touch screen adopts 10.1 inch capacitive touch screen, can improve human -computer interaction ability, improves user operation experience, realizes information real -time display. Through 4G module realizes the real -time monitoring of recycling cabinet state, remote upgrade and remote control.

[0073] The utility model has the following advantages:

[0074] 1, high degree of intelligence: the recycling cabinet's automation management and remote control are realized through the integration of multiple function modules in the application, reduce the manual intervention, improve the operation efficiency.

[0075] 2, safe and reliable: the combination of automatic door opening circuit, weighing circuit, inner illumination circuit, outer illumination circuit, inner camera module and outer camera module etc. function, ensures the security of recycling cabinet in the delivery process, effectively prevents the loss and damage of article.

[0076] 3, user experience optimization: touch screen and audio communication circuit provide clear operation instruction and timely state feedback for the user, reduce the use obstacle and delivery error.

[0077] 4, reduce the operation cost: realize real -time monitoring and remote maintenance through 4G module, reduce the manual inspection and maintenance cost.

[0078] 5, improve the anti -theft performance: the inner camera module and outer camera module help to record the information of deliverer, improve the anti -theft performance.

[0079] 6, environmental protection and energy saving: LED lamp is automatically opened and closed according to the delivery process, saves the energy.

[0080] 7, abnormal situation early warning: infrared sensor real -time monitoring delivery article state, discovers abnormal situation and issues the alarm in time, ensures the normal operation of recycling cabinet.

[0081] The above content is only the preferred embodiment of the utility model, for the ordinary skilled person in the art, according to the thought of the utility model, in specific implementation mode and application scope, will have the change, the content of the specification should not be understood as the limitation of the utility model.

Claims

1. An intelligent control system for recycling bins, characterized in that: This includes a core board, TF interface circuit, IO expansion circuit, USB-HUB circuit, 4G module, touch screen, audio communication circuit, GPIO communication circuit, automatic door opening circuit, weighing circuit, network port circuit, door lock circuit, TYPE-C interface circuit, internal camera module, external camera module, and power supply circuit. The network port circuit, door lock circuit, TF interface circuit, GPIO communication circuit, automatic door opening circuit, weighing circuit, audio communication circuit, touch screen, TYPE-C interface circuit, and USB-HUB circuit are all electrically connected to the core board. The core board, door lock circuit, TF interface circuit, GPIO communication circuit, automatic door opening circuit, weighing circuit, audio communication circuit, touch screen, and USB-HUB circuit are all electrically connected to the power supply circuit. The internal camera module, external camera module, and 4G module are all electrically connected to the USB-HUB circuit. The core board is equipped with a main control chip, U4. The GPIO communication circuit includes four GPIO input circuits, an internal lighting circuit, an external lighting circuit, a first switch circuit, and a second switch circuit. The four GPIO input circuits, the internal lighting circuit, the external lighting circuit, the first switch circuit, and the second switch circuit are electrically connected to the core board. At least two GPIO input circuits are respectively connected to a smoke sensor and an infrared sensor.

2. The intelligent control system for a recycling bin according to claim 1, characterized in that: The power supply circuit includes a DC power supply circuit, a 12V-5V conversion circuit, and a 5V-3V conversion circuit. The DC power supply circuit includes connector J1, fuse F1, fuse F2, bidirectional diode D1, capacitor C11, capacitor C12, and capacitor C13. The first pin of connector J1 is electrically connected to the first terminals of fuse F1 and F2, respectively. The VDD_12V power supply terminal is electrically connected to the second terminals of fuse F1, fuse F2, bidirectional diode D1, capacitor C11, capacitor C12, and capacitor C13, respectively. The second and third pins of connector J1, the second terminal of bidirectional diode D1, the second terminal of capacitor C11, the second terminal of capacitor C12, and the second terminal of capacitor C13 are grounded. The 12V-5V conversion circuit includes a power conversion chip U1, capacitors C2, C3, C4, C5, C14, C1, C15, C6, C7, C8, C9, and C10, resistors R2, R4, R6, R7, R8, R1, R3, and R5, and an inductor L1. The VDD_12V power supply terminal is connected to the VIN pin of the power conversion chip U1, the first terminal of resistor R2, the first terminal of capacitor C2, the first terminal of capacitor C3, and the first terminal of capacitor C4. One end of the power converter chip U1 is electrically connected to the first end of capacitor C5. The EN pin of the power converter chip U1 is electrically connected to the second ends of resistor R2 and resistor R4 respectively. The second ends of capacitors C2, C3, C4, and C5, and the first end of resistor R4 are grounded. The VCC pin of the power converter chip U1 is electrically connected to the first ends of resistors R6 and R7, and the first end of capacitor C14 respectively. The PG pin of the power converter chip U1 is electrically connected to the second end of resistor R6. The MODE pin of the power converter chip U1 is electrically connected to... The second terminals of resistors R7 and R8 are electrically connected. The second terminal of capacitor C14 and the first terminal of resistor R8 are grounded. The BST pin of power conversion chip U1 is electrically connected to the first terminal of resistor R1. The second terminal of resistor R1 is electrically connected to the first terminal of capacitor C1. The SW pin of power conversion chip U1 is electrically connected to the second terminal of capacitor C1 and the first terminal of inductor L1. The second terminal of inductor L1 is connected to the first terminals of resistors R3, C6, C7, C8, C9, and C10. The first terminal is electrically connected to the VCC5V0_SYS power supply terminal. The FB pin of the power conversion chip U1 is electrically connected to the second terminal of resistor R3 and the first terminal of resistor R5, respectively. The VOUT pin of the power conversion chip U1 is electrically connected to the first terminal of the main control chip U4 and capacitor C15, respectively. The PGND pin, AGND pin of the power conversion chip U1, the second terminal of capacitor C15, the second terminal of resistor R5, the second terminal of capacitor C6, the second terminal of capacitor C7, the second terminal of capacitor C8, the second terminal of capacitor C9 and the second terminal of capacitor C10 are grounded respectively. The 5V-3V conversion circuit includes a power conversion chip U3, inductor L2, capacitors C18, C19, C21, C22, C23, and C20, and resistors R19, R22, R18, and R20. The VIN pin of power converter chip U3 is electrically connected to the first terminals of capacitor C19 and C18, and the VCC5V0_SYS power supply terminal, respectively. The EN pin of power converter chip U3 is electrically connected to the second terminals of resistors R19 and R22, respectively. The first terminal of resistor R19 is electrically connected to the VCC5V0_SYS power supply terminal, and the first terminal of resistor R22 is electrically connected to the VCC_3V3_EN pin. The SW pin of power converter chip U3 is electrically connected to the first terminal of inductor L2, and the FB pins of power converter chip U3 are respectively... The second terminal of capacitor C21, the second terminal of resistor R18, and the first terminal of resistor R20 are electrically connected. The second terminal of inductor L2 is electrically connected to the first terminal of capacitor C21, the first terminal of resistor R18, the first terminal of capacitor C22, the first terminal of capacitor C23, the first terminal of capacitor C20, and the VCC_3V3 power supply terminal. The second terminals of capacitor C18, capacitor C19, the GND pin of power conversion chip U3, resistor R20, capacitor C22, capacitor C23, and capacitor C20 are grounded respectively.

3. The intelligent control system for a recycling bin according to claim 2, characterized in that: The internal lighting circuit includes an internal LED light, connector J24, resistors R140, R145, R154, R155, diode D30, diode D28, and MOSFET Q7. The internal LED is connected to connector J24. The first pin of connector J24 is electrically connected to the second terminal of resistor R140, the second terminal of resistor R145, and the negative terminal of diode D28. The first terminal of resistor R140 is electrically connected to the VDD_12V power supply terminal. The first terminal of resistor R145 is electrically connected to the VCC5V0_SYS power supply terminal. The second pin of connector J24 is electrically connected to the positive terminal of diode D28, the drain of MOSFET Q7, and the negative terminal of diode D30. The gate of MOSFET Q7 is electrically connected to the second terminal of resistor R154 and the first terminal of resistor R155. The first terminal of resistor R154 is electrically connected to the GPIO0_A2 pin of the main control chip U4. The second terminal of resistor R155, the source of MOSFET Q7, and the positive terminal of diode D30 are grounded. The external lighting circuit includes an external LED light, connector J28, resistors R159, R164, R171, diode D36, diode D35, and MOSFET Q11. The external LED is connected to connector J28. The first pin of connector J28 is electrically connected to the second terminal of resistor R159, the second terminal of resistor R164, and the negative terminal of diode D35. The first terminal of resistor R159 is electrically connected to the VDD_12V power supply terminal. The first terminal of resistor R164 is electrically connected to the VCC5V0_SYS power supply terminal. The second pin of connector J28 is electrically connected to the positive terminal of diode D35, the drain of MOSFET Q11, and the negative terminal of diode D36. The gate of MOSFET Q11 is electrically connected to the second terminal of resistor R171 and the first terminal of resistor R174. The first terminal of resistor R171 is electrically connected to the GPIO1_B0 pin of the main control chip U4. The second terminal of resistor R174, the source of MOSFET Q11, and the positive terminal of diode D36 are grounded.

4. The intelligent control system for a recycling bin according to claim 2, characterized in that: The first switching circuit includes switch SW1, connector J23, resistors R137, R148, R150, diodes D27 and D29, and MOSFET Q4. Switch SW1 is connected to connector J23. The first pin of connector J23 is electrically connected to the negative terminal of diode D27 and the second terminal of resistor R137. The first terminal of resistor R137 is electrically connected to the VDD_12V power supply terminal. The second pin of connector J23 is electrically connected to the positive terminal of diode D27, the drain of MOSFET Q4, and the negative terminal of diode D29. The gate of MOSFET Q4 is electrically connected to the second terminal of resistor R148 and the first terminal of resistor R150. The first terminal of resistor R148 is electrically connected to the GPIO5_P1_3 pin of the main control chip U4. The second terminal of resistor R150, the source of MOSFET Q4, and the positive terminal of diode D29 are grounded. The second switching circuit includes switch SW2, connector J27, resistors R156, R165, and R168, diodes D33 and D34, and MOSFET Q8. Switch SW2 is connected to connector J27. The first pin of connector J27 is electrically connected to the negative terminal of diode D33 and the second terminal of resistor R156. The first terminal of resistor R156 is electrically connected to the VDD_12V power supply terminal. The second pin of connector J27 is electrically connected to the positive terminal of diode D33, the drain of MOSFET Q8, and the negative terminal of diode D34. The gate of MOSFET Q8 is electrically connected to the second terminal of resistor R165 and the first terminal of resistor R168. The first terminal of resistor R165 is electrically connected to the GPIO1_B1 pin of the main control chip U4. The second terminal of resistor R168, the source of MOSFET Q8, and the positive terminal of diode D34 are grounded.

5. The intelligent control system for a recycling bin according to claim 2, characterized in that: The first GPIO input circuit includes connector J25, MOSFET Q5, bidirectional diode D32, resistors R138, R143, R147, R175, R151, R152, and R141. The first pin of connector J25 is electrically connected to the second terminals of resistors R175 and R151, respectively. The second pin of connector J25 is electrically connected to the first terminals of resistors R147, R143, R138, and R175, respectively. The second terminal of resistor R138 is electrically connected to the VDD_12V power supply terminal. The second terminal of resistor R143 is electrically connected to the VCC5V0_SYS power supply terminal. The second terminal of resistor R147 is electrically connected to the VCC_3V3 power supply terminal. The first terminal of resistor R151 is electrically connected to the first terminal of resistor R152, the first terminal of bidirectional diode D32, and the gate of MOSFET Q5, respectively. The drain of MOSFET Q5 is electrically connected to the second terminal of resistor R141 and the GPIO5_P1 pin of the main control chip U4, respectively. The second to fourth GPIO input circuits have the same structure as the first GPIO input circuit.

6. The intelligent control system for a recycling bin according to claim 2, characterized in that: The audio communication circuit includes an SPK interface circuit and a pickup circuit, both of which are electrically connected to the power supply circuit and the core board.

7. The intelligent control system for a recycling bin according to claim 2, characterized in that: The USB-HUB circuit includes a HUB control chip U7. The DPU pin of the HUB control chip U7 is electrically connected to the USB_HUB_DP pin of the main control chip U4. The DMU pin of the HUB control chip U7 is electrically connected to the USB_HUB_DM pin of the main control chip U4. The DP1 and DM1 pins of the HUB control chip U7 are electrically connected to a first USB-TYPE-A socket. The DP2 and DM2 pins of the HUB control chip U7 are electrically connected to a second USB-TYPE-A socket. The DP3 and DM3 pins of the HUB control chip U7 are electrically connected to a third USB-TYPE-A socket. The DP4 pin of the HUB control chip U7 is electrically connected to the USB_4G_DP4 pin of the 4G module through a fourth USB-TYPE-A socket. The DM4 pin of the HUB control chip U7 is electrically connected to the USB_4G_DM4 pin of the 4G module through a fourth USB-TYPE-A socket.

8. The intelligent control system for a recycling bin according to claim 2, characterized in that: The core board is equipped with a level conversion circuit, which includes a level conversion chip U5, capacitors C27 and C28, and a resistor R30. The VCCA pin of the level conversion chip U5 is electrically connected to the first end of the resistor R30, the first end of the capacitor C27, and the VCC_1V8 power supply terminal, respectively. The OE pin of the level conversion chip U5 is electrically connected to the second end of the resistor R30. The VCCB pin of the level conversion chip U5 is electrically connected to the first end of the capacitor C28 and the VCC_3V3 power supply terminal, respectively. The second ends of the capacitors C27 and C28, the GND pin and the EP pin of the level conversion chip U5 are grounded, respectively. The A1, A2, A3, A4, B1, B2, B3 and B4 pins of the level conversion chip U5 are electrically connected to the main control chip U4, respectively.

9. The intelligent control system for a recycling bin according to claim 2, characterized in that: The automatic door opening circuit includes a first motor drive circuit, a second motor drive circuit, and a door opening power supply circuit. The first motor drive circuit includes a motor drive chip U22, a connector J14, capacitors C90, C91, and C118, bidirectional diodes D50, D51, and D48. The VDD pin of the motor drive chip U22 is electrically connected to the first terminal of capacitor C91, the first terminal of capacitor C90, and the VDD_12V power supply terminal, respectively. The INA pin of the motor drive chip U22 is electrically connected to the GPIO5_P0_0 pin of the main control chip U4, and the INB pin of the motor drive chip U22 is electrically connected to the GPIO5_P0_1 pin of the main control chip U4. The OA2 pin of the motor drive chip U22 is electrically connected to the OA1 pin, the first pin of the connector J14, the second terminal of the bidirectional diode D50, the first terminal of the bidirectional diode D48, and the first terminal of the capacitor C118, respectively. The OB2 pin of the motor drive chip U22 is electrically connected to the OB1 pin, the second pin of the connector J14, the second terminal of the bidirectional diode D51, the second terminal of the bidirectional diode D48, and the second terminal of the capacitor C118, respectively. The GND pin of the motor drive chip U22, the second terminal of the capacitor C90, the second terminal of the capacitor C91, the first terminal of the bidirectional diode D50, and the first terminal of the bidirectional diode D51 are grounded, respectively. The second motor drive circuit includes a motor drive chip U26, a connector J36, capacitors C116, C117, and C119, bidirectional diodes D52, D53, and D49. The VDD pin of the motor drive chip U26 is electrically connected to the first terminal of capacitor C117, the first terminal of capacitor C116, and the VDD_12V power supply terminal, respectively. The INA pin of the motor drive chip U26 is electrically connected to the GPIO5_P0_2 pin of the main control chip U4, and the INB pin of the motor drive chip U26 is electrically connected to the GPIO5_P0_3 pin of the main control chip U4. The OA2 pin of the motor drive chip U26 is electrically connected to the OA1 pin, the first pin of the connector J36, the second terminal of the bidirectional diode D52, the first terminal of the bidirectional diode D49, and the first terminal of the capacitor C119, respectively. The OB2 pin of the motor drive chip U26 is electrically connected to the OB1 pin, the second pin of the connector J36, the second terminal of the bidirectional diode D53, the second terminal of the bidirectional diode D49, and the second terminal of the capacitor C119, respectively. The GND pin of the motor drive chip U26, the second terminal of the capacitor C116, the second terminal of the capacitor C117, the first terminal of the bidirectional diode D52, and the first terminal of the bidirectional diode D53 are grounded, respectively. The door opening power supply circuit includes a power control chip U21, capacitors C92, C93, C94, C95, and C96, a resistor R110, and an inductor L5. The IN pin of the power control chip U21 is electrically connected to the EN pin, the first terminal of capacitor C93, the first terminal of capacitor C92, and the VCC5V0_SYS power supply terminal. The OUT pin of the power control chip U21 is electrically connected to the first terminal of capacitor C94, the first terminal of capacitor C95, and the first terminal of resistor R110. The second terminal of resistor R110 is electrically connected to the first terminal of capacitor C96 and the VCC_ADC power supply terminal. The second terminals of capacitors C92 and C93, the GND pin of the power control chip U21, the second terminals of capacitors C94, C95, and C96 are grounded. The inductor L5 is connected in series between the second terminals of capacitors C95 and C96.

10. The intelligent control system for a recycling bin according to claim 9, characterized in that: The automatic door opening circuit is also equipped with an anti-pinch circuit, which includes operational amplifier U23, capacitors C98, C97, and C99, and resistors R112, R113, R111, R115, R116, R117, and R114. The non-inverting input of operational amplifier U23 is electrically connected to the first terminal of capacitor C98, the first terminal of resistor R116, and the second terminal of resistor R111. The inverting input of operational amplifier U23 is electrically connected to the first terminal of resistor R117, the second terminal of capacitor C98, and the second terminal of resistor R115. The first terminal of resistor R111 is electrically connected to the first terminal of resistor R113, the first terminal of resistor R112, and ground. The first terminal of resistor R115 is electrically connected to the second terminal of resistor R113, the second terminal of resistor R112, and ground. The connection is as follows: the second end of resistor R116 is grounded; the positive power supply terminal of operational amplifier U23 is electrically connected to the VCC_ADC power supply terminal and the first end of capacitor C97; the output terminal of operational amplifier U23 is electrically connected to the second end of resistor R117 and the first end of resistor R114; the second end of resistor R114 is electrically connected to the first end of capacitor C99 and the Current_FB pin of the main control chip U4; and the second ends of capacitor C97, capacitor C99, and the negative power supply terminal of operational amplifier U23 are grounded.

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