An unmanned gravity sensing vending machine system based on 4G network

Abstract

The invention discloses an unmanned gravity-sensing vending cabinet system based on a 4G network, comprising: a vending cabinet body, a main control board, a weighing control component and a peripheral component; the main control board is provided with a communication module, a camera circuit, an HDMI circuit, an LVDS circuit, an audio amplifier circuit, a display screen circuit, a 232-1 serial port, a 232-2 serial port and a TTL serial port; the weighing control component comprises a weighing control board and a weighing sensor; the weighing control board comprises a single-chip microcomputer, an acquisition circuit HX711 module, a DC_DC module, an electric bolt lock control circuit, a relay circuit, a 232-1 serial port circuit, a 485-1 serial port circuit and a 485-2 serial port circuit; the peripheral component comprises an electric bolt lock, an AC adapter, a card reader, an electronic price tag, a speaker, a camera and a display screen. The invention adds the acquisition circuit HX711 module, and only gravity sensing is required to complete the identification and settlement of goods; at the same time, the electronic price tag and the card reader are added to supplement the shopping card swiping function, which is convenient for customers to operate and improves the sales rate of goods.

Description

Technical Field

[0001] The present invention belongs to the field of self-service sales equipment, and in particular relates to an unmanned gravity-sensing vending cabinet system based on a 4G network. Background Art

[0002] Vending machines are generally set up in crowded places such as office places without stores, theaters, stations, entertainment venues, tourist attractions, etc. It has the characteristics of simple and fast purchase, 24-hour operation, and can be set up in any place where consumers may have needs with the smallest space. It is a common equipment for commercial automation. It is not restricted by time and place, can save manpower and facilitate transactions. There are two main transaction pricing methods. The first is to identify based on images and price according to the type of goods. The second is to identify based on gravity sensing and price according to the weight of the goods. After selecting the goods, the vending machine program will initiate a QR code for payment application to the backend server, including WeChat, Alipay or other electronic payments. The QR code is directly displayed on the vending machine display. After the customer scans the code, the backend server will check whether the payment account has received the money. If it has received it, the backend server will issue a delivery instruction to the vending machine, and the vending machine will ship according to the instruction.

[0003] However, the existing gravity-sensing vending machines have inaccurate gravity sensing, and the extracted products cannot accurately locate and identify which product it is. Therefore, they cannot rely solely on gravity sensing to complete the identification and settlement of goods, and often deduct the wrong amount from customers. Many gravity-sensing vending machines on the market still need to be assisted by image recognition to complete the identification of goods, and cannot display the prices of the goods sold well. They also do not take into account the shopping pain points of primary school students and middle-aged and elderly people, and cannot make purchases by swiping cards or perform voice broadcasts. Summary of the invention

[0004] In order to solve the shortcomings of the prior art, the present invention provides an unmanned gravity-sensing vending machine system based on a 4G network, which adds an acquisition circuit HX711 module and designs a high-precision electronic scale. Goods identification and settlement sales can be completed by simply using gravity sensing; at the same time, electronic price tags are added to display the prices of the goods sold in real time, and a card reader is added to supplement the shopping card swiping function. This product not only improves the performance of the gravity-sensing vending machine, but also facilitates customer operation and increases the sales rate of goods.

[0005] In order to achieve the above-mentioned purpose, an embodiment of the present invention is an unmanned gravity-sensing vending machine system based on a 4G network, comprising: a vending machine body, a main control board, a weighing control component and a peripheral component; the main control board is provided with a communication module, a camera circuit, an HDMI circuit, an LVDS circuit, an audio amplification circuit, a display screen circuit, a 232-1 serial port, a 232-2 serial port and a TTL serial port; the weighing control component comprises a weighing control board and a weighing sensor; the weighing control board comprises a single-chip microcomputer, an acquisition circuit HX711 module, a DC_DC module, an electric bolt lock control circuit, at least 3 groups of relay circuits, a 232-1 serial port circuit, a 485-1 serial port circuit and a 485-2 serial port circuit; the peripheral components comprise an electric bolt lock, an AC adapter, a card reader, an electronic price tag, a speaker, a camera and a display screen.

[0006] The three groups of relay circuits are reserved for controlling electrical equipment; the serial port 485-1 is reserved for the card reader, and the serial port circuit 485-2 is reserved for connecting to the first end of the electronic price tag; the electric lock is connected to the electric lock control circuit on the weighing control board through the electric lock interface, and the electric lock control circuit is connected to the single-chip microcomputer to control the opening and closing of the vending machine door; the first end of the AC adapter is connected to the external power supply through an AC line, and the second end of the AC adapter is connected to the DC_DC module, and the DC_DC module converts the fixed DC voltage into multiple DC voltages to power the components of the vending machine with different voltage requirements; the weighing sensor is connected to the electronic scale through the electronic scale The interface is connected to the first end of the acquisition circuit HX711 module, and the second end of the acquisition circuit HX711 module is connected to the single-chip microcomputer; the LVDS circuit and the HDMI circuit are used to connect the display screen with interfaces of different standards; the main control board is connected to the server through the communication module, connected to the card reader through the TTL serial port for card swiping shopping operations, connected to the second end of the electronic price tag through the 232-2 serial port for commodity price display, connected to the camera through the USB interface circuit for recording when the user purchases and binding with the order, and taking pictures to record the user's operation process; connected to the speaker through the audio amplifier circuit for voice broadcasting.

[0007] Furthermore, the communication module is a 4G networking circuit module.

[0008] Furthermore, the display screen is a touch display screen.

[0009] Furthermore, the USB interface is a USB 2.0 interface.

[0010] Furthermore, the main control board is an Android mainboard.

[0011] Furthermore, there are multiple electronic price tags.

[0012] Furthermore, the electronic price tag corresponds to the corresponding commodity aisle and displays the price of the commodity in real time.

[0013] The beneficial effects of the present invention are:

[0014] 1. The invention adds the acquisition circuit HX711 module to design a high-precision weighing control module, which can complete the goods identification and settlement sales by simply using gravity sensing, which essentially improves the product performance of the gravity sensing vending cabinet;

[0015] 2. The present invention adds electronic price tags, which can display the prices of the goods sold in real time, making it convenient for customers to shop;

[0016] 3. The present invention adds a card reader to supplement the card swiping function of the vending machine, solves the pain point of primary school students and middle-aged and elderly people shopping without mobile phones, facilitates customer operation, and improves the sales rate of goods. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a structural schematic diagram of a vending machine main body in an embodiment of a 4G network-based unmanned gravity-sensing vending machine system of the present invention;

[0018] Figure 2 is a system functional block diagram of an embodiment of the present invention;

[0019] Figure 3 It is a structural schematic diagram of a weighing control board according to an embodiment of the present invention.

[0020] In the figure:

[0021] 1--Main body of vending machine; 2--Display screen. DETAILED DESCRIPTION

[0022] To make the purpose, technical solutions and advantages of the present invention clearer, the following Figure 1-2 The invention is further described with examples.

[0023] The existing gravity-sensing vending machines have inaccurate gravity sensing, cannot accurately locate and identify the product, often deduct the wrong amount from customers, and cannot well display the price of the goods sold. They also do not take into account the shopping pain points of primary school students and middle-aged and elderly people, such as card shopping and voice broadcast. Therefore, gravity sensing cannot be used alone to complete the identification and settlement of goods. Many gravity-sensing vending machines on the market also need to be assisted by image recognition to complete the identification of goods, and at the same time add electronic price tags and shopping card swiping functions. This product only needs to use gravity sensing to complete the identification and settlement of goods.

[0024] like Figure 1 , 2As shown, an unmanned gravity-sensing vending machine system based on a 4G network according to an embodiment of the present invention includes: a vending machine body 1, a main control board, a weighing control component and a peripheral component.

[0025] The main control board is equipped with a communication module, a camera circuit, an HDMI circuit, an LVDS circuit, an audio amplifier circuit, a display circuit, a 232-1 serial port, a 232-2 serial port and a TTL serial port.

[0026] The weighing control assembly includes a weighing control board and a weighing sensor; Figure 3 As shown, the weighing control board includes a single-chip microcomputer, an acquisition circuit HX711 module, a DC_DC module, an electric lock control circuit, at least 3 groups of relay circuits, a 232-1 serial port circuit, a 485-1 serial port circuit and a 485-2 serial port circuit; the weighing sensor is connected to the first end of the acquisition circuit HX711 module through the electronic scale interface, and the second end of the acquisition circuit HX711 module is connected to the single-chip microcomputer; the acquisition circuit HX711 module is used for data acquisition and amplification processing. It is a 24-bit A / D converter chip module that integrates peripheral circuits required including a voltage-stabilized power supply and an on-chip clock oscillator, and has the advantages of high integration, fast response speed, and strong anti-interference. The whole machine cost of the gravity-sensing vending cabinet is reduced, and the performance and reliability of the whole machine are improved. All control signals of the module are driven by pins, and there is no need to program the internal registers. The input selection switch can arbitrarily select channel A or channel B, and is connected to its internal low-noise programmable amplifier. The programmable gain of channel A is 128 or 64, and the corresponding full-scale differential input signal amplitude is ±20mV or ±40mV respectively. Channel B has a fixed gain of 32 and is used for system parameter detection. The regulated power supply provided in the chip can directly provide power to external sensors and the A / D converter in the chip, and no additional analog power supply is required on the system board. The clock oscillator in the chip does not require any external devices. The power-on automatic reset function simplifies the initialization process of powering on.

[0027] The 232-1 serial port circuit of the weighing control board is connected to the 232-1 serial port on the Android board, which is used for communication between the Android board (host computer) and the weighing control board (slave computer).

[0028] The peripheral components include an electric bolt lock, an AC adapter, a card reader, an electronic price tag, a speaker, a camera and a display screen 2; the display screen 2 is a touch display screen.

[0029] Three groups of relay circuits are reserved for controlling electrical equipment; serial port 485-1 is reserved for a card reader, which is used by primary school students or the elderly to swipe cards to open doors for shopping; serial port circuit 485-2 is reserved for connecting to the first ends of multiple electronic price tags, which are used to display the prices of the goods being sold in real time, corresponding to the corresponding multiple aisles.

[0030] The electric lock is connected to the electric lock control circuit on the weighing control board through the electric lock interface, and the electric lock control circuit is connected to the single-chip microcomputer to control the opening and closing of the door; the first end of the AC adapter is connected to the external power supply through the AC line, and the second end of the AC adapter is connected to the DC_DC module. The DC_DC module converts the fixed DC voltage into multiple DC voltages, thereby powering various components of the vending machine with different voltage requirements.

[0031] The LVDS circuit and the HDMI circuit are used for connecting the display screen 2 with interfaces of different standards.

[0032] The main control board is connected to the server through the 4G networking circuit module. The main control board is an Android mainboard. It is connected to the card reader through the TTL serial port for card swiping shopping operations, connected to the second end of the electronic price tag through the 232-2 serial port for commodity price display, and connected to the camera through the USB interface circuit for recording when the user purchases and binding with the order, taking photos and recording the user's operation process. The camera is installed in the upper right corner of the vending machine body; the USB interface is USB2.0; the Android mainboard is also connected to an audio amplifier, which is connected to the speaker through the audio amplifier circuit for voice broadcasting.

[0033] The electronic scale core interface 1-10 is 5P-2.5 spacing, and the interface order is: NC / signal+ / signal-N- / N+; the relay control button input is TK1 / TK3 / TK5; the output is TK2 / TK4 / TK6; the 485 communication interface is 4P-2.5 spacing, and the interface order from left to right is: 485- / 485+ / GND / VCC; 485-2 is connected to the electronic tag; 485-1 is temporarily invalid; the 232 communication interface is 4P-2.0 spacing, and the interface order from left to right is: +5V / TX / RX / GND; the current interface DC12V is 4P-3.96 spacing, and the interface order from left to right is: VCC / VCC / GND / GND; the electric lock interface is 5P-2.0 spacing, and the interface order from left to right is: V+ / CRL / GND / Feedback 2 / Feedback 1; the speaker interface order from top to bottom is + / -.

[0034] The present invention is provided with an AC adapter, which is connected to an external power supply through the AC adapter, and is provided with a DC_DC module. The DC_DC module converts a fixed DC voltage into a multi-channel DC voltage, so as to power the unmanned gravity sensing vending cabinet. The weight of the goods is detected by a weighing sensor, and the detected weight information of the goods is transmitted to a single-chip microcomputer through an acquisition circuit HX711 module on a control board. The single-chip microcomputer compares and analyzes the weights of the front and rear containers to calculate the price of the goods, and transmits the information to an Android board for processing through a 232 serial port. The Android mainboard is connected to a server through a 4G networking circuit module to perform data processing. The user can check and operate the information through a display screen 2. A camera circuit is provided to take photos and record the user's operation process. The door lock is controlled by the single-chip microcomputer, so that the purchase settlement of the goods can be completed with only a weighing sensor, and a voice broadcast function is provided.

[0035] During specific use: the user opens WeChat, scans the QR code on the display screen 2, activates WeChat password-free payment, enters the background, selects the cabinet door to be opened, the corresponding electric lock circuit controls the electric lock to open the corresponding cabinet door, selects the required goods, the price of the goods will be displayed on the electronic price tag, the mobile phone and the display screen 2 will display the corresponding price, take the goods, close the door, automatically generate an order, and complete the purchase of the goods.

[0036] The above embodiments are only preferred embodiments of the present invention and are not intended to limit the protection scope of the present invention. Any changes that adopt the design principles of the present invention and are made through non-creative work on this basis should fall within the scope of the present invention.

Claims

1. An unmanned gravity sensing vending machine system based on 4G network, characterized in that: It includes: Vending machine body, main control panel, weighing control components and peripheral components; The main control board is provided with a communication module, a camera circuit, an HDMI circuit, an LVDS circuit, an audio amplifier circuit, a display screen circuit, a 232-1 serial port, a 232-2 serial port and a TTL serial port; The weighing control assembly includes a weighing control board and a weighing sensor; the weighing control board includes a single chip microcomputer, an acquisition circuit HX711 module, a DC_DC module, an electric lock control circuit, at least 3 groups of relay circuits, a 232-1 serial port circuit, a 485-1 serial port circuit and a 485-2 serial port circuit; The peripheral components include an electric bolt lock, an AC adapter, a card reader, an electronic price tag, a speaker, a camera and a display screen; The three groups of relay circuits are reserved for controlling electrical equipment; the 485-1 serial port circuit is reserved for the card reader, and the 485-2 serial port circuit is reserved for connecting to the first end of the electronic price tag; the electric lock is connected to the electric lock control circuit on the weighing control board through the electric lock interface, and the electric lock control circuit is connected to the single-chip microcomputer to control the opening and closing of the vending machine door; the first end of the AC adapter is connected to the external power supply through the AC line, and the second end of the AC adapter is connected to the DC_DC module, and the DC_DC module converts the fixed DC voltage into multiple DC voltages to power the components of the vending machine with different voltage requirements; the weighing sensor is connected to the electronic The scale interface is connected to the first end of the acquisition circuit HX711 module, and the second end of the acquisition circuit HX711 module is connected to the single-chip microcomputer; the LVDS circuit and the HDMI circuit are used to connect the display screen with interfaces of different formats; the main control board is connected to the server through the communication module, connected to the card reader through the TTL serial port for card swiping shopping operations, connected to the second end of the electronic price tag through the 232-2 serial port for commodity price display, connected to the camera through the USB interface circuit for recording when the user purchases and binding with the order, and taking photos to record the user's operation process; connected to the speaker through the audio amplifier circuit for voice broadcasting; The communication module is a 4G networking circuit module; The display screen is a touch display screen.

2. The 4G network-based unmanned gravity-sensing vending machine system according to claim 1 is characterized in that: The USB interface is a USB 2.0 interface.

3. The 4G network-based unmanned gravity-sensing vending machine system according to claim 1 is characterized in that: The main control board is an Android mainboard.

4. The 4G network-based unmanned gravity-sensing vending machine system according to claim 1 is characterized in that: There are multiple electronic price tags.

5. The 4G network-based unmanned gravity-sensing vending machine system according to claim 1 is characterized in that: The electronic price tag corresponds to the corresponding commodity channel and displays the price of the commodity in real time.

Images