Smart campus shared trolley based on cloud service

Abstract

The invention discloses an intelligent campus shared trolley based on cloud service, and relates to the field of shared trolleys, and the intelligent campus shared trolley comprises a trolley body and a cloud server; a main processor, a distance sensor and a voice module are arranged on the cart body; the cart body is of an electronic lock structure. The distance sensor is used for detecting distance information between the cart body and front and rear obstacles in the moving process; the cloud server is used for verifying the user identity and whether the cart is available or not according to the two-dimensional code information on the cart body scanned by the user terminal, sending an unlocking instruction to the user terminal to unlock the electronic lock, receiving a cart returning instruction of the user terminal, and pushing settlement fee information to the user terminal; the main processor is used for controlling the voice module to prompt distance information, and the electronic lock structure is controlled to be unlocked and locked according to the received unlocking instruction and the bicycle returning instruction.

Description

Technical Field

[0001] This application relates to the field of shared trolleys, and particularly to a shared trolley based on cloud services for a smart campus. Background Art

[0002] There are products such as shared bicycles and shared power banks on the market now. Shared products have greatly facilitated people's daily lives. Users can rent such products at a relatively low cost to solve thorny problems.

[0003] On campus, during the start of each school year, the volume of express deliveries surges. Many students will buy a lot of packages at one time. Generally, students need to pick up the express deliveries at the pick-up point in the school. In this case, students need to use a trolley, but there is no shared trolley available on campus. Summary of the Invention

[0004] The purpose of this application is to provide a shared trolley based on cloud services for a smart campus, which can provide a trolley with a sharing function.

[0005] To achieve the above purpose, this application provides the following solutions:

[0006] In a first aspect, this application provides a shared trolley based on cloud services for a smart campus, including: a trolley body and a cloud server; a main processor, a distance sensor connected to the main processor, and a voice module are provided on the trolley body; the trolley body adopts an electronic lock structure;

[0007] The distance sensor is used to detect the distance information between the trolley body and obstacles in front and behind during the movement of the trolley body, and transmit the distance information to the main processor;

[0008] The cloud server is used to obtain the two-dimensional code information scanned by the user terminal on the trolley body, verify the user identity and the availability of the trolley according to the two-dimensional code information. When the user identity verification is passed and the trolley is verified as available, send an unlocking instruction to the user terminal so that the user terminal sends the unlocking instruction to the main processor of the scanned trolley body; the cloud server is also used to receive the return vehicle instruction from the user terminal and push the settlement fee information to the user terminal;

[0009] The main processor is used to control the voice module to prompt the distance information according to the received distance information, and control the electronic lock structure to unlock according to the received unlocking instruction; the main processor is also used to receive the return vehicle instruction from the user terminal to control the electronic lock structure to lock.

[0010] Optionally, the shared trolley based on cloud services for a smart campus further includes: a pressure sensor; the pressure sensor is used to detect the weight of the goods carried on the trolley body and transmit the detected weight information to the main processor.

[0011] Optionally, the cloud server is further configured to receive the overweight information of the goods transmitted by the main processor, calculate the overweight fee of the goods according to the overweight information of the goods, and the settlement fee information pushed to the user terminal includes the overweight fee of the goods.

[0012] Optionally, the shared trolley based on cloud service in the smart campus further includes a positioning module connected to the main processor; the positioning module is configured to collect the positioning information of the trolley body and transmit it to the cloud server through the main processor.

[0013] Optionally, the shared trolley based on cloud service in the smart campus further includes a power module connected to the main processor; the power module supplies power to the main processor, the distance sensor, the voice module, the pressure sensor and the positioning module; the power module is further configured to control the power supply amount of the wheel drive motor according to the throttle size after the electronic lock is unlocked.

[0014] Optionally, the power module adopts a solar panel.

[0015] Optionally, the voice module is further configured to broadcast voice information of successful unlocking or successful locking after the electronic lock structure is unlocked or locked.

[0016] Optionally, the shared trolley based on cloud service in the smart campus further includes a communication module connected to the main processor; the communication module is configured to be connected to the user terminal via Bluetooth and connected to the cloud server via the Internet.

[0017] Optionally, the distance sensor adopts a millimeter-wave radar.

[0018] Optionally, the shared trolley based on cloud service in the smart campus further includes a memory connected to the main processor.

[0019] According to the specific embodiments provided by the present application, the present application discloses the following technical effects:

[0020] The present application provides a shared trolley based on cloud services for a smart campus, which includes: a trolley body and a cloud server; a main processor, a distance sensor and a voice module are provided on the trolley body; the trolley body adopts an electronic lock structure; the distance sensor is used to detect the distance information between the trolley body and the obstacles in front and behind during the movement of the trolley body; the cloud server is used to verify the user identity and the availability of the trolley according to the two-dimensional code information scanned by the user terminal on the trolley body, send an unlocking instruction to the user terminal to unlock the electronic lock, and receive the vehicle return instruction from the user terminal and push the settlement fee information to the user terminal; the main processor is used to control the voice module to prompt the distance information and control the unlocking and locking of the electronic lock structure according to the received unlocking instruction and vehicle return instruction. The present application provides a trolley with a sharing function, and the trolley has an obstacle detection function, which can timely remind the user of the obstacle information on the path and ensure the safety of using the trolley. In addition, using the cloud server can ensure the data security and privacy of the user terminal and improve the safety of using the shared trolley. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required in the embodiments. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0022] Figure 1 It is the design schematic diagram of the shared trolley based on cloud services provided by an embodiment of the present application;

[0023] Figure 2 It is the hardware structure diagram of the shared trolley provided by an embodiment of the present application;

[0024] Figure 3 It is the hardware structure diagram of the trolley lock of the shared trolley provided by an embodiment of the present application;

[0025] Figure 4 It is the design diagram of the shared trolley provided by an embodiment of the present application;

[0026] Figure 5 It is the design diagram of the trolley lock of the shared trolley provided by an embodiment of the present application;

[0027] Figure 6 It is the design diagram of the millimeter wave radar of the shared trolley provided by an embodiment of the present application;

[0028] Figure 7 It is the flowchart of using the millimeter wave radar of the shared trolley provided by an embodiment of the present application to achieve obstacle avoidance;

[0029] Figure 8Flowchart of the voice broadcast reminder for the shared trolley provided by an embodiment of the present application;

[0030] Figure 9 Flowchart of the overweight charging for the shared trolley provided by an embodiment of the present application;

[0031] Figure 10 Flowchart of the power driving wheels of the shared trolley provided by an embodiment of the present application;

[0032] Figure 11 Software structure diagram of the shared trolley provided by an embodiment of the present application;

[0033] Figure 12 Usage flowchart of the shared trolley provided by an embodiment of the present application. Detailed implementation manners

[0034] Next, the technical solutions in the embodiments of the present application will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present application. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0035] To make the above objects, features, and advantages of the present application more obvious and understandable, the present application will be further described in detail below in conjunction with the accompanying drawings and specific implementation manners.

[0036] An embodiment of the present application provides a shared trolley based on cloud services for a smart campus. The overall design concept is as follows: The user uses the small program on the mobile phone to scan the QR code of the shared trolley, establish a connection with the cloud server through 5G / wifi, obtain the usage status of the trolley from the cloud server. If the trolley can be opened, the mobile phone controls the opening of the trolley lock through Bluetooth. The cloud server simultaneously receives the GPS positioning of the mobile phone and the trolley and the notification of successful unlocking of the mobile phone. This is the method when unlocking. The same applies when locking.

[0037] As Figures 1 to 4 shown, the shared trolley based on cloud services for a smart campus includes: a trolley body and a cloud server; a main processor, a distance sensor, and a voice module connected to the main processor are provided on the trolley body; the trolley body adopts an electronic lock structure. As Figure 5 shown, it enables users to easily lock and unlock the vehicle. This function allows users to easily control the access rights of the vehicle through a mobile phone application or a key card. Users can lock the vehicle at any time to ensure full protection of the vehicle when not in use, and can also quickly unlock it for travel. This lock system not only provides convenience but also helps prevent theft and abuse.

[0038] The main body of the cart includes basic components such as a body, wheels, and handles to provide cargo carrying and moving functions.

[0039] The distance sensor is used to detect the distance information between the cart body and the front and rear obstacles during the movement of the cart body, and transmit the distance information to the main processor. As an example, the distance sensor uses a millimeter wave radar. Figure 6 As shown in the figure, the millimeter wave radar is installed at the front and rear of the cart to transmit and receive millimeter wave signals for object detection, distance measurement and obstacle avoidance. The millimeter wave radar can detect objects, pedestrians and other vehicles around the vehicle, which greatly increases safety. It measures the position, speed and distance of surrounding objects through microwave radiation, so as to promptly prompt to avoid potential obstacles. This technology also performs well in bad weather conditions because it is not affected by factors such as rain and snow, thereby improving the reliability and safety of travel. In addition, collision sensors and cameras can also be set up to sense the surrounding environment and obstacles.

[0040] Based on the function of the distance sensor, the main processor is used to control the voice module to prompt the distance information according to the received distance information. Figure 7 As shown in the figure, a flowchart of using millimeter-wave radar to achieve obstacle avoidance in a shared cart is given. The shared cart is equipped with a millimeter-wave radar for obstacle avoidance. The millimeter-wave radar is installed at the front and rear of the cart to transmit and receive millimeter-wave signals to achieve object detection, distance measurement and obstacle avoidance. The basic working principle of millimeter-wave radar is to use a high-frequency circuit to generate electromagnetic waves with a specific modulation frequency (FMCW), and to send electromagnetic waves through an antenna and receive electromagnetic waves reflected from the target. It can simultaneously measure the distance, speed and azimuth of multiple targets; speed measurement is based on the Doppler effect. By calculating the frequency change of the radar wave returning to the receiving antenna, the target's movement speed and flight time relative to the radar can be obtained to obtain the distance of the target object.

[0041] The shared trolleys are equipped with millimeter-wave radars, which have the advantages of high precision, high accuracy, high reliability, and low energy consumption. The millimeter-wave radar can sense in time when the trolley is about to collide, and issue a warning sound and stop, preventing the trolley from colliding with external objects and causing damage.

[0042] As an optional implementation, the voice module is also used to broadcast a voice message of successful unlocking or locking when the electronic lock structure is unlocked or locked. The voice module can also sound an alarm for abnormal conditions. The voice module uses a model "YX5200-24SS MP3 audio module", which has the advantage of being able to store and play audio files, and is suitable for storing and playing music, sound effects and voice clips.

[0043] like Figure 8As shown, a flowchart of the voice broadcast reminder for the shared trolley is given. The shared trolley can give voice broadcast reminders. The shared trolley is equipped with an audio system, including a speaker and an audio playback device. In this way, the system can pre-record or play voice reminders in real time, such as safety notices, usage instructions, or other relevant information. For example, when the unlocking is successful, a voice prompt "Unlocking successful" will be given.

[0044] The advantages of voice broadcast reminders are as follows: 1. Provide real-time guidance: Voice broadcast reminders can provide users with real-time guidance and tips. For example, during use, the system can remind users of safety matters, correct operation methods, or handling methods for special situations. 2. Improve the user experience: Voice broadcast reminders can enhance the user experience. By conveying information in voice, users can receive and understand it more conveniently without having to focus on the screen or text content. 3. Increase accessibility: Voice broadcast reminders can improve the accessibility of the shared trolley. For users with visual impairments or those who cannot read text, voice reminders are a more convenient interaction method.

[0045] The cloud server is used to obtain the QR code information on the trolley body scanned by the user terminal, verify the user's identity and the availability of the trolley according to the QR code information. When the user identity verification is passed and the trolley is verified as available, an unlocking instruction is sent to the user terminal so that the user terminal sends the unlocking instruction to the main processor of the scanned trolley body; the cloud server is also used to receive the return instruction of the user terminal and push the settlement fee information to the user terminal.

[0046] The main processor is used to control the unlocking of the electronic lock structure according to the received unlocking instruction; the main processor is also used to receive the return instruction of the user terminal to control the locking of the electronic lock structure.

[0047] The main processor is the core computing unit of the trolley, responsible for performing various computing tasks and controlling various functions of the trolley. In this application, the chip model is phy6222, which is a low-power Bluetooth chip, mainly applied in the product field of data transmission. The main processor is a 32-bit ARM Cortex M0, embedded with 512KB FLASH, 128KB ROM, and 138KB SRAM, with a serial port as the programming interface.

[0048] As an optional implementation manner, the shared trolley based on cloud services in the smart campus further includes: a pressure sensor; the pressure sensor is located inside the trolley tabletop and is in a flaky structure. When pressure is applied, it will produce a slight deformation to detect the pressure. The model of the pressure sensor is HBM Z6, the maximum measurement range: 1 kg to 500 kg, and the operating temperature range: -10°C to 40°C.

[0049] The pressure sensor is used to detect the weight of the goods carried on the trolley body and transmit the detected weight information to the main processor. The cloud server is further configured to receive the overweight information of the goods transmitted by the main processor and calculate the overweight fee of the goods based on the overweight information and push it to the user terminal. As Figure 9 shown, a flowchart for charging for overweight shared trolleys is given. The shared trolley is equipped with a pressure sensor, and the pressure sensor is installed inside the cargo area of the shared trolley. This can detect the pressure or weight borne by the cargo area. By monitoring the pressure change in the cargo area, the weight status of the goods can be understood in real time, and an alarm or feedback can be provided to ensure no overloading or reasonable weight distribution. If the weight exceeds a certain limit, the trolley processor receives the sensor signal and sends it to the cloud server for overweight charging processing.

[0050] The advantages of equipping with a pressure sensor are as follows: 1. Load monitoring: By installing a pressure sensor in the cargo area, the weight of the goods can be monitored in real time. This is very important for shared trolleys because overloading may cause damage to the trolley or improper use. By monitoring the pressure change in the cargo area, overloading can be detected in a timely manner and corresponding measures can be taken, such as reminding the user to reduce the cargo load or prohibiting overloading. 2. Safety guarantee: Installing a pressure sensor in the cargo area can improve the safety of the shared trolley. When the goods are too heavy, the stability and maneuverability of the trolley may be affected, increasing the risk of accidents. By monitoring the pressure change in the cargo area in real time, an alarm or feedback can be provided so that the user can pay attention and adjust the cargo load to ensure the stability and safety of the trolley. 3. Damage prevention: Damage to the structure and components of the shared trolley caused by overloading is a common problem. By installing a pressure sensor, overloading can be prevented, avoiding situations where the trolley cracks, deforms or component damage due to excessive load. This helps to extend the service life of the trolley and reduce maintenance and replacement costs. 4. Provide user feedback: The pressure sensor installed in the cargo area can provide real-time feedback to the user. For example, when the cargo load is too heavy, the sensor can remind the user to reduce the load or redistribute the goods through alarms, displays or voice prompts. In this way, the user can take timely actions to ensure the safety and reliability of the trolley.

[0051] As an alternative implementation, the shared trolley of the smart campus based on cloud services further includes: a power module connected to the main processor; the power module supplies power to the main processor, the distance sensor, the voice module, the pressure sensor and the positioning module; as an example, the power module uses a solar panel. A rechargeable battery is used for power supply to provide the energy required by the trolley. The power source is a lithium iron phosphate battery, model LFP26650. The single-cell capacity of this model battery is 26650 mAh and the voltage is 4.2V. The advantages of this battery are: 1) Adopting advanced microprocessor technology, it can perform fast and accurate automatic overcharge and over-discharge protection on the rechargeable battery, ensuring safe and efficient charging of the rechargeable battery. 2) The built-in current protection and short-circuit protection functions can ensure that the battery core will not be short-circuited due to excessive current during the charging process, protecting the battery core from being damaged, thereby extending the battery life. 3) Supports multiple output voltages: can be connected to a DC power supply to supply power to other electronic devices. 4) Provides 5V / 9V / 12V / 24V output to adapt to different models of lithium battery charging.

[0052] The power module is also used to control the power supply amount of the wheel drive motor according to the throttle size after the electronic lock is unlocked. As Figure 10 shown, the flowchart of the power supply driving the wheels of the shared trolley is given.

[0053] The shared trolley is equipped with a lithium battery to store the electric energy converted by the solar panel. The trolley is also equipped with a control system. The throttle is controlled by a rotating handle. The lithium battery converts the stored chemical energy into electric energy and supplies it to the wheel drive system through a circuit. Through the motor equipped on the shared bicycle, the motor generates a magnetic field in the coil through the current, and then interacts with the magnetic field on the wheel to generate torque. The transmission system transmits the torque generated by the motor to the wheel, thereby pushing the shared trolley forward.

[0054] The advantages of the power source driving the wheels are: 1. Easy to push: The electric assist system can provide additional power, reducing the burden on the user to push. This is very helpful for carrying heavy objects or using the trolley for a long time, and can reduce physical consumption and fatigue. 2. Improve efficiency: The electric assist trolley can improve work efficiency. Due to the existence of auxiliary power, the trolley can move items more quickly, reducing the handling time and increasing productivity. 3. Reduce manpower requirements: Traditional manual trolleys rely on human strength to push, while electric assist trolleys can reduce the dependence on manpower. This can reduce labor costs in some scenarios and reduce the physical requirements for personnel at the same time. 4. Convenient to operate: The electric assist trolley is equipped with a control system with simple operation, and the user can easily control the driving direction and speed of the trolley. This can improve the convenience and accuracy of operation.

[0055] The shared trolley based on cloud services in the smart campus further includes: a positioning module connected to the main processor; the positioning module is used to collect the positioning information of the trolley body and transmit it to the cloud server through the main processor. The main processor of the shared trolley is connected to a Beidou satellite navigation receiving antenna through a UART interface to receive positioning data and timing data from Beidou satellites. The positioning module is used to obtain the Global Positioning System (GPS) signal to determine the accurate position of the trolley so as to provide position navigation for the user terminal.

[0056] The shared trolley based on cloud services in the smart campus further includes: a communication module connected to the main processor; the communication module is used to establish a Bluetooth connection with the user terminal and connect to the cloud server through the Internet.

[0057] The main processor of the shared trolley is the main computing unit, which is connected to the eSIM communication module through a PCIe bus. The main processor can send control instructions to the eSIM communication module through the PCIe bus, and the eSIM communication module will send its working status to the main processor (such as an embedded computer module), and at the same time complete the transceiver of network data.

[0058] The shared trolley is equipped with multiple eSIM cellular network modules. The eSIM cellular network module has the ability of over-the-air writing, and can access the network according to the local cellular network coverage when the trolley is in any position.

[0059] The shared trolley based on cloud services in the smart campus further includes: a memory connected to the main processor. The memory includes internal memory and storage. Internal memory (RAM): The shared trolley is equipped with a certain capacity of random access memory, which is used to store temporary data and calculations during program operation. Storage: The shared trolley is equipped with a flash memory as the main storage medium, which is used to store the operating system, application programs, sensor data, voice data, etc.

[0060] This application designs a shared trolley considering multiple aspects. 1. Safety: The sharing of trolleys may involve multiple users using the same trolley. Therefore, it is necessary to solve the problem of how to ensure the safety of users' personal items and the shared trolley to prevent theft or damage. 2. Intelligent positioning and navigation: The shared trolley requires an accurate positioning and navigation system so that users can easily find the nearest available trolley and return it to the designated location. This requires solving problems related to positioning technology, map data, and navigation algorithms. 3. Power dependence: Shared trolleys usually require power supply to drive the operation of the main processor and other electronic components. This means that the trolley cannot work properly when the power is unavailable or the battery runs out. In addition, the limitation of battery life may result in limited usage time of the trolley. 4. Data security and privacy: The shared trolley system involves users' personal data, such as location information and travel history. Therefore, it is necessary to solve the problem of how to protect users' data privacy and compliance to meet relevant regulations and legal requirements. For the above four problems, this application is equipped with a millimeter-wave radar, which greatly improves the safety of the trolley; uses a positioning module to enable users to quickly find the nearby vehicle parking and return points; is equipped with a solar panel to continuously supplement the power and the power supply is replaced manually regularly; uses a cloud server to ensure the security and privacy of users' data.

[0061] Designing the above-mentioned shared trolley can facilitate the carrying of items: The intelligent education shared trolley aims to provide a convenient solution for students to carry items, enabling them to easily carry schoolbags, folders, shopping items, etc. It can also realize the transportation of items on campus: The trolley can be used to transport items on campus, such as textbooks, experimental equipment, or other learning tools. This application can greatly improve the efficiency of students picking up and sending express deliveries during the start of school and graduation seasons, and the design cost of this application is relatively low. Only by renting a server and installing an electronic lock on the trolley can the above effects be achieved.

[0062] As Figure 11 shown, the software structure of the intelligent campus shared trolley is given. For the user interface, interfaces are provided for students and administrators to rent trolleys, query the trolley location, pay fees, etc. For the trolley control system, it is responsible for controlling functions such as the movement (unlocking and locking) of the trolley, positioning, and navigation, and performs unlocking and locking operations and positioning navigation according to user instructions (such as unlocking and locking instructions) or preset routes. For the billing system, the cloud server calculates the fees for renting the trolley and pushes them to the user terminal. The small program on the user terminal is integrated with the user terminal's account or payment system to facilitate the settlement of relevant fees. For the data management system, it manages information such as the usage records and fault reports of the trolley. For the security and monitoring system, it may include anti-theft functions and real-time video monitoring to ensure the safety of the trolley and prevent abuse.

[0063] As Figure 12As shown, the usage process of the shared trolley is given:

[0064] 1. The user opens the mini-program and scans the QR code.

[0065] The user uses the WeChat or Alipay mini-program and authorizes the mini-program to use the user's identity credit permissions, camera permissions, Bluetooth permissions, and location permissions. If not authorized, it cannot be used.

[0066] 2. The user scans the QR code on the selected trolley body, and at the same time the application parses the QR code information.

[0067] After the user opens the mini-program, points the camera at the QR code on the trolley body. After scanning the QR code on the trolley body, the mini-program starts to parse the scanned QR code and extracts the information therein. This QR code information includes the unique identifier of the trolley, location information, unlocking instructions, etc.

[0068] 3. The mini-program sends the parsed information to the cloud server.

[0069] The mini-program sends the parsed information to the cloud server of the present application for verification and processing. This includes user identity verification, trolley availability check, etc. Whether the trolley is available is stored in the cloud server. The present invention also provides a channel to report that the trolley is unavailable. If someone provides information feedback that the trolley is unavailable, there will be an offline manual inspection, and the data in the cloud server will be changed through the background system to mark a certain trolley as unavailable. Thereafter, if someone scans the same trolley, the user will be prompted that the trolley is unavailable.

[0070] 4. The cloud server verifies the user's identity and the availability of the bicycle.

[0071] After receiving the request, the cloud server will verify the user's identity and the availability of the trolley. If the user does not have permission to use or the trolley is unavailable, the cloud server will return a corresponding error message to prompt the user. If the trolley is available, the subsequent process will be carried out. If the trolley is unavailable, it will return to the previous step to prompt the user to change to another trolley for use.

[0072] 5. The cloud server generates an unlocking instruction and sends the unlocking instruction back to the mini-program.

[0073] If the verification passes, the cloud server will generate an unlocking instruction, which contains the information required for unlocking. This signal is sent back to the mini-program as the instruction to open the trolley.

[0074] 6. The mini-program sends the instruction to the electronic lock system of the trolley via Bluetooth to unlock the trolley.

[0075] After receiving the unlock command, the applet sends the command to the nearby cart via Bluetooth. After receiving the unlock command, the electronic lock system on the cart will unlock the state, allowing the cart to be pushed away and used by the user.

[0076] 7. User using a cart

[0077] Once the user unlocks the cart, the cart system starts tracking the user's usage itinerary, including information such as usage time, distance and location, and transmits it to the cloud server for record keeping.

[0078] 8. After the user has finished using the app, use the mini program to end the use

[0079] When the user is done using the cart, they can use the mini program to end the trip, which triggers the system to lock the cart, calculate the fare, and end the trip.

[0080] 9. The cloud server verifies whether the lock is locked

[0081] Since the trolleys are used at several fixed pick-up and return points on campus, they must be returned at the designated return points. If the trolleys are not returned at the return points, the charges cannot be stopped, and the user's click on the return button is invalid and the user is prompted to return the trolley at a fixed return point. If the user insists on returning the trolley, a fixed fee can be charged.

[0082] 10. Calculate fees and users pay

[0083] The trolley system calculates the fee based on the usage time of the trolley and deducts the fee from the user's account. Users can only choose to use online payment methods such as WeChat and Alipay. If the trolley is overweight, an additional overweight fee may be charged.

[0084] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0085] This article uses specific examples to illustrate the principles and implementation methods of this application. The description of the above embodiments is only used to help understand the method and core ideas of this application. At the same time, for those skilled in the art, according to the ideas of this application, there will be changes in the specific implementation methods and application scope. In summary, the content of this specification should not be understood as limiting this application.

Claims

1. A shared trolley based on cloud services for a smart campus, characterized in that, The shared trolley based on cloud service in the smart campus includes: a trolley body and a cloud server; a main processor, a distance sensor connected to the main processor, and a voice module are provided on the trolley body; the trolley body adopts an electronic lock structure; The distance sensor is used to detect the distance information between the trolley body and the obstacles in front and behind during the movement of the trolley body, and transmit the distance information to the main processor; The cloud server is used to obtain the QR code information scanned by the user terminal on the trolley body, verify the user identity and the availability of the trolley according to the QR code information. When the user identity verification is passed and the trolley is verified as available, send an unlocking instruction to the user terminal so that the user terminal sends the unlocking instruction to the main processor of the scanned trolley body; the cloud server is also used to receive the return vehicle instruction of the user terminal and push the settlement fee information to the user terminal; The main processor is used to control the voice module to prompt the distance information according to the received distance information, and control the electronic lock structure to unlock according to the received unlocking instruction; the main processor is also used to receive the return vehicle instruction of the user terminal to control the electronic lock structure to lock.

2. The shared trolley based on cloud services for the smart campus according to claim 1, wherein The shared trolley based on cloud service in the smart campus further includes: a pressure sensor; the pressure sensor is used to detect the weight of the goods carried on the trolley body and transmit the detected weight information to the main processor.

3. The shared trolley based on cloud service for the smart campus according to claim 2, wherein The cloud server is also used to receive the overweight information of the goods transmitted by the main processor, calculate the overweight fee of the goods according to the overweight information of the goods; the settlement fee information pushed to the user terminal includes the overweight fee of the goods.

4. The shared trolley based on cloud service for the smart campus according to claim 3, characterized in that, The shared trolley based on cloud service in the smart campus further includes: a positioning module connected to the main processor; the positioning module is used to collect the positioning information of the trolley body and transmit it to the cloud server through the main processor.

5. The shared trolley based on cloud service in the smart campus according to claim 4, characterized in that, The shared trolley based on cloud service in the smart campus further includes: a power module connected to the main processor; the power module supplies power to the main processor, the distance sensor, the voice module, the pressure sensor and the positioning module; the power module is also used to control the power supply amount of the wheel drive motor according to the throttle size after the electronic lock is unlocked.

6. The shared trolley based on cloud service for the smart campus according to claim 5, wherein The power module adopts a solar panel.

7. The shared trolley based on cloud service in the smart campus according to claim 6, wherein, The voice module is also used to broadcast the voice information of successful unlocking or successful locking after the electronic lock structure is unlocked or locked.

8. The shared trolley based on cloud service for the smart campus according to claim 7, characterized in that, The shared trolley based on cloud service in the smart campus further includes: a communication module connected to the main processor; the communication module is used to connect to the user terminal via Bluetooth and connect to the cloud server via the Internet.

9. The shared trolley based on cloud services for a smart campus according to claim 8, characterized in that, The distance sensor adopts a millimeter wave radar.

10. The shared trolley based on cloud service in the smart campus according to claim 9, characterized in that, The shared trolley based on cloud service in the smart campus further includes: a memory connected to the main processor.

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