Waste steel weighing processing system and method

Abstract

The invention discloses a waste steel weighing processing system and method. A waste steel operation end is created through a PC tenant end; the method comprises the steps that a user logs in a service platform through an H5 driver end according to a scrap steel operation end, and after login succeeds, a weighing signal is sent to the service platform to obtain a scrap steel weighing push notice; according to the scrap steel weighing push notice, a weighing vehicle image / weighing weight image / weighing voice prompt information and a weight bill data ticket are obtained through a voice broadcast system, a weight bill printing system and a DVR capture system of a wagon balance client, and a scrap steel weighing result is subjected to weight bill caching through a service platform; and finally, feeding back the weighing order management signal to an H5 driver end through the business platform, so as to confirm the weighing weight of the scrap steel and a scrap steel operation end to realize data storage of a scrap steel weighing result. Through simple modular design connection, excessive intervention of weight house personnel is not needed, operation is convenient and simple, and the weighing efficiency is improved.

Description

Technical Field

[0001] The present invention relates to the technical field of intelligent scrap steel weighing and processing, and in particular to a scrap steel weighing and processing system and method. Background Art

[0002] At present, the degree of informationization and intelligence of scrap steel weighing management in scrap steel processing bases varies. Although the automatic weighing solution is relatively mature, not all processing bases have the conditions to install relevant hardware equipment. Especially for some small processing bases that have been operating for a long time, a simple, efficient and low-cost means is needed to complete the informationization transformation of the existing scrap steel weighing business process. Summary of the invention

[0003] The present invention provides a scrap steel weighing processing system and method to overcome the above technical problems.

[0004] In order to achieve the above object, the technical solution of the present invention is:

[0005] A scrap steel weighing and processing system, comprising a system client, a business platform and a weighbridge client;

[0006] The system client is connected to the business platform for communication; and the system client includes a PC tenant terminal and an H5 driver terminal;

[0007] The PC tenant terminal is used to collect scrap steel demand information to obtain scrap steel operation information; and transmit the scrap steel operation information to the scrap steel operation terminal of the business platform for storage;

[0008] The scrap steel operation information includes scrap steel supplier information and scrap steel customer information;

[0009] The scrap steel operation end includes the scrap steel supplier end and the scrap steel client end;

[0010] The H5 driver terminal is used to implement user login to the business platform according to the scrap steel operation terminal, and sends a weighing signal to the business platform after successful login. The business platform controls the scale to perform scrap steel weighing operations according to the weighing signal, and obtains a push notification for scrap steel weighing;

[0011] The scrap steel weighing push notification includes a weight taking completion notification, a weight taking stability notification, and an H5 weighing completion notification;

[0012] The weighbridge client is connected to the business platform for communication;

[0013] The weighbridge client includes a voice broadcast system, a weighing slip printing system and a DVR capture system;

[0014] The DVR capture system is used to obtain the weighed vehicle image and the weighed weight image according to the weight taking stability notification;

[0015] The weighed vehicle image includes a vehicle head / parking space image containing a license plate number;

[0016] The voice broadcast system is used to generate a weighing voice prompt message according to the weight taking completion notification;

[0017] The weighing slip printing system is used to print the weighing slip data ticket according to the H5 weighing completion notification, and at the same time feed back the printing signal to the business platform; after receiving the printing signal, the business platform caches the weighing result of the scrap steel and obtains the weighing slip management signal;

[0018] The business platform sends the weighing order management signal to the H5 driver terminal to confirm the weighing weight of the scrap steel and the scrap steel operation terminal to realize data storage of the scrap steel weighing results.

[0019] Furthermore, the business platform includes a weight detection module, a weighing bill management module, a data storage library and a scrap steel operation terminal;

[0020] The scrap steel operation terminal is used to input the identity information of the cargo owner according to the scrap steel demand information to obtain the scrap steel supplier information and the scrap steel customer information;

[0021] The cargo owner's identity information includes at least the cargo owner's operating location information, business license information, ID card information and bank account information;

[0022] The weight detection module is used to receive the weighing signal sent by the H5 driver terminal, and notify the weighbridge client to communicate with the scrap steel weighing electronic scale head to obtain the weight value of the scrap steel weighing electronic scale head;

[0023] The weighing slip management module is used to cache the weighing slip of the scrap steel after the business platform receives the printing signal, and to distinguish and manage the cached weighing slip data based on the scrap steel supplier information and the scrap steel customer information;

[0024] The data repository is used to store the scrap steel weighing weight confirmed by the H5 driver side and the data of the scrap steel operation side.

[0025] Furthermore, the weight detection module obtains the weight value of the scrap steel weighing electronic scale head according to the following rules:

[0026] Within the preset time threshold, the weight detection module samples the weight value of the scrap steel weighing electronic scale multiple times, and compares the weight values ​​after multiple sampling based on the business platform;

[0027] If the weight values ​​of the current multiple samplings are the same, then it is confirmed that the weight value of the electronic scale head of the scrap steel weighing is the stable weight value of the current scrap steel weighing;

[0028] If at least one of the weight values ​​sampled multiple times is different, the weighing signal is resent to the weight detection module through the H5 driver terminal until a stable weight value of the scrap steel is confirmed.

[0029] Furthermore, the system client and the business platform use the WebSocket communication protocol for communication connection;

[0030] The business platform and the weighbridge client are connected in communication via the MQTT client;

[0031] The weighbridge client uses an RS232 serial port to communicate with the scrap steel weighing electronic scale head.

[0032] A method for weighing and processing scrap steel comprises the following steps:

[0033] S1: According to the collected scrap steel demand information, the scrap steel supplier information and scrap steel customer information are obtained through the PC tenant terminal of the system client, and the scrap steel operation information is transmitted to the business platform;

[0034] S2: Move the vehicle to be weighed for scrap steel onto the weighbridge, connect the system client to the business platform through the WebSocket communication protocol; and use the H5 driver terminal to log in to the business platform based on the scrap steel supplier information and the scrap steel customer information;

[0035] After successful login, a weighing signal is sent to the business platform through the H5 driver terminal, and the business platform controls the scale to perform scrap steel weighing operations according to the weighing signal;

[0036] And according to the weight value rules of the weight detection module, obtain the weight completion notification, weight stability notification and H5 weighing completion notification; obtain the stable weight value of scrap steel weighing, and simultaneously generate a scrap steel weighing push notification and send it to the DVR capture system of the weighbridge client;

[0037] The DVR capture system obtains the weighed vehicle image and weighed weight image according to the weight stabilization notification, and transmits them to the business platform for storage;

[0038] S3: When the business platform receives the output of the DVR capture system, it sends the weight taking completion notification and the H5 weighing completion notification to the voice broadcast system and the weighing slip printing system;

[0039] Generate weighing voice prompt information through the voice broadcast system according to the weight completion notification;

[0040] The weighing slip printing system prints the weighing slip data ticket according to the H5 weighing completion notification, and at the same time feeds back the printing signal to the business platform;

[0041] S4: After receiving the printing signal, the business platform sends the scrap steel weighing result to the weighing bill management module, caches the weighing bill and obtains the weighing bill management signal;

[0042] The weighing order management signal is sent to the H5 driver terminal, and the weighing weight of the scrap steel is confirmed by the H5 driver terminal and the scrap steel operation terminal to realize the data storage of the scrap steel weighing result.

[0043] Beneficial effects: The present invention provides a scrap steel weighing processing system and method, which creates a scrap steel operation terminal through a PC tenant terminal; enables users to log in to the business platform through the H5 driver terminal according to the scrap steel operation terminal, and sends a weighing signal to the business platform to obtain a scrap steel weighing push notification after successful login; obtains the weighing vehicle image / weighing weight image / weighing voice prompt information and weighing bill data ticket through the voice broadcast system, weighing bill printing system and DVR capture system of the scale client according to the scrap steel weighing push notification, and caches the weighing bill of the scrap steel weighing result through the business platform; finally, the weighing bill management signal is fed back to the H5 driver terminal through the business platform to confirm the weighing weight of the scrap steel and the scrap steel operation terminal to realize the data storage of the scrap steel weighing result. Through a simple modular design connection, the driver user can weigh autonomously without excessive intervention from the weighing room staff, and the operation is convenient and simple, which improves the weighing efficiency. BRIEF DESCRIPTION OF THE DRAWINGS

[0044] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0045] Figure 1 A schematic diagram of a scrap steel weighing and processing system of the present invention;

[0046] Figure 2 It is a structural schematic diagram of a scrap steel weighing and processing system in this embodiment. DETAILED DESCRIPTION

[0047] In order to make the purpose, technical solution and advantages of the embodiments of the present invention clearer, the technical solution in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0048] This embodiment provides a scrap steel weighing and processing system, such as Figure 1 to Figure 2As shown, it includes system client, business platform and weighbridge client;

[0049] The system client is connected to the business platform for communication; and the system client includes a PC tenant terminal and an H5 driver terminal;

[0050] The PC tenant terminal is used to collect scrap steel demand information to obtain scrap steel operation information; and transmit the scrap steel operation information to the scrap steel operation terminal of the business platform for storage;

[0051] The scrap steel operation information includes scrap steel supplier information and scrap steel customer information;

[0052] The scrap steel operation end includes the scrap steel supplier end and the scrap steel client end;

[0053] The H5 driver terminal is used to implement user login to the business platform according to the scrap steel operation terminal, and sends a weighing signal to the business platform after successful login. The business platform controls the scale to perform scrap steel weighing operations according to the weighing signal, and obtains a push notification for scrap steel weighing;

[0054] The scrap steel weighing push notification includes a weight taking completion notification, a weight taking stability notification, and an H5 weighing completion notification;

[0055] The weighbridge client is connected to the business platform for communication;

[0056] The weighbridge client includes a voice broadcast system, a weighing slip printing system and a DVR capture system;

[0057] The DVR capture system is used to obtain the weighed vehicle image and the weighed weight image according to the weight taking stability notification;

[0058] The weighed vehicle image includes a vehicle head / parking space image containing a license plate number;

[0059] Specifically, the DVR capture system obtains the vehicle head / parking space image including the license plate number when the vehicle is weighed through the SDK provided by the DVR manufacturer;

[0060] The voice broadcast system is used to generate a weighing voice prompt message according to the weight taking completion notification;

[0061] Specifically, the weighing voice prompt information is that after the preset voice broadcast system obtains the weight completion notification from the business platform, it calls the Windows voice service to broadcast the weighing result, prompting the vehicle to leave the scale as soon as possible; through the MQTT client, the weighbridge client and the business platform can complete data communication, including receiving weighing slip printing commands, voice broadcast commands, DVR capture commands, publishing weighing results, heartbeat data, etc.

[0062] The weighing slip printing system is used to print the weighing slip data ticket according to the H5 weighing completion notification, and at the same time feed back the printing signal to the business platform; after receiving the printing signal, the business platform caches the weighing result of the scrap steel and obtains the weighing slip management signal;

[0063] Specifically, the printing service of the weighing slip printing system relies on the thermal printer driver to pass the weighing slip receipt printing content to the thermal printer for receipt printing; the MQTT client enables the weighing slip client and the business platform to complete data communication, including receiving weighing slip receipt printing commands, voice broadcast commands, DVR capture commands, publishing weighing results, heartbeat data, etc.

[0064] The business platform sends the weighing order management signal to the H5 driver terminal to confirm the weighing weight of the scrap steel and the scrap steel operation terminal to realize data storage of the scrap steel weighing results.

[0065] In a specific embodiment, the business platform includes a weight detection module, a weighing bill management module, a data repository, and a scrap steel operation terminal;

[0066] The scrap steel operation terminal is used to input the identity information of the cargo owner according to the scrap steel demand information to obtain the scrap steel supplier information and the scrap steel customer information; the scrap steel supplier information is also used to complete tasks such as supplier information input and retrieval; the scrap steel customer information is also used to complete tasks such as customer information input and retrieval;

[0067] The cargo owner's identity information includes at least the cargo owner's operating location information, business license information, ID card information and bank account information;

[0068] The weight detection module is used to receive the weighing signal sent by the H5 driver terminal, and notify the weighbridge client to communicate with the scrap steel weighing electronic scale head to obtain the weight value of the scrap steel weighing electronic scale head;

[0069] The weighing slip management module is used to cache the weighing slip of the scrap steel after the business platform receives the printing signal, and to distinguish and manage the cached weighing slip data based on the scrap steel supplier information and the scrap steel customer information; and the weighing slip management service is also used for tasks such as weighing slip information entry and retrieval;

[0070] The data repository is used to store the scrap steel weighing weight and the scrap steel operation end data after the H5 driver end confirms the scrap steel weighing weight. The data repository is used to store the scrap steel weighing business information.

[0071] In a specific embodiment, the weight detection module obtains the weight value of the scrap steel weighing electronic scale head according to the following rules:

[0072] Within the preset time threshold, the weight detection module samples the weight value of the scrap steel weighing electronic scale multiple times, and compares the weight values ​​after multiple sampling based on the business platform;

[0073] If the weight values ​​of the current multiple samplings are the same, then the weight value of the electronic scale head for weighing scrap steel is confirmed to be the stable weight value of the current scrap steel weighing; specifically, the weight detection module is used for the stability detection task of the weight value. When 10 weight values ​​are the same within the preset time threshold, the weight stability notification is pushed to the H5 driver terminal through the business platform;

[0074] If at least one of the weight values ​​sampled multiple times is different, the H5 driver terminal will resend the weighing signal to the weight detection module until a stable weight value for the scrap steel is confirmed; in addition, the same weight value means that it is the same within a certain error range, not that the weight is absolutely the same.

[0075] In a specific embodiment, the system client and the service platform use the WebSocket communication protocol to communicate with each other;

[0076] The business platform and the weighbridge client are connected in communication via the MQTT client;

[0077] The weighbridge client uses an RS232 serial port to communicate with the scrap steel weighing electronic scale head.

[0078] A method for weighing and processing scrap steel comprises the following steps:

[0079] S1: According to the collected scrap steel demand information, the scrap steel supplier information and scrap steel customer information are obtained through the PC tenant terminal of the system client, and the scrap steel operation information is transmitted to the business platform;

[0080] S2: Move the vehicle to be weighed for scrap steel onto the weighbridge, connect the system client to the business platform through the WebSocket communication protocol; and use the H5 driver terminal to log in to the business platform based on the scrap steel supplier information and the scrap steel customer information;

[0081] After successful login, a weighing signal is sent to the business platform through the H5 driver terminal, and the business platform controls the scale to perform scrap steel weighing operations according to the weighing signal;

[0082] And according to the weight value rules of the weight detection module, obtain the weight completion notification, weight stability notification and H5 weighing completion notification; obtain the stable weight value of scrap steel weighing, and simultaneously generate a scrap steel weighing push notification and send it to the DVR capture system of the weighbridge client;

[0083] The DVR capture system obtains the weighed vehicle image and weighed weight image according to the weight stabilization notification, and transmits them to the business platform for storage;

[0084] S3: When the business platform receives the output of the DVR capture system, it sends the weight taking completion notification and the H5 weighing completion notification to the voice broadcast system and the weighing slip printing system;

[0085] Generate weighing voice prompt information through the voice broadcast system according to the weight completion notification;

[0086] The weighing slip printing system prints the weighing slip data ticket according to the H5 weighing completion notification, and at the same time feeds back the printing signal to the business platform;

[0087] S4: After receiving the printing signal, the business platform sends the scrap steel weighing result to the weighing bill management module, caches the weighing bill and obtains the weighing bill management signal;

[0088] The weighing order management signal is sent to the H5 driver terminal, and the weighing weight of the scrap steel is confirmed by the H5 driver terminal and the scrap steel operation terminal to realize the data storage of the scrap steel weighing result.

[0089] The specific usage process is:

[0090] Step 1: System business personnel use the PC tenant terminal to create suppliers and customers;

[0091] System business personnel log in to the PC tenant end to complete the entry of suppliers and customers, including basic information of suppliers / customers, photos of ID cards of relevant persons in charge, photos of bank cards, and other information.

[0092] Step 2: The vehicle arrives at the weighbridge, and the driver scans the vehicle to carry out H5 autonomous weighing;

[0093] When the vehicle reaches the weighbridge, the driver needs to get off the vehicle and enter the weighing room. Use a mobile browser, WeChat or other tools to scan the specified QR code to enter the weighing page of the H5 driver end. If it is the first time to weigh, the driver needs to enter the license plate number and the owner of the goods. If it is not the first time, the historical license plate number and the owner of the goods can be displayed, and there is no need to enter the license plate number and the owner of the goods again. Finally, click to start weighing, and the H5 client will immediately establish a WebSocket connection with the business platform;

[0094] Step 3: H5 starts weighing automatically;

[0095] The business platform confirms the weighing process based on the license plate number and the owner. If it is not the first weighing, the current weighing ticket status and the last weighing result are displayed. Otherwise, the initial weighing ticket status is displayed. The weighbridge client pushes the weighing result to the business platform via the MQTT connection, and the business platform pushes the weighing result to the H5 client via the WebSocket connection. Finally, the numbers in the weighing result area begin to change.

[0096] Step 4: The weight is stable and the system automatically submits the weighing result;

[0097] After the numbers in the weighing result area are stable, the business platform can also detect the stability of the weighing readings and push a stable notification to the H5 client through the WebSocket connection. The H5 client will automatically submit the current weighing result to the business platform and display the submitted result.

[0098] Step 5: Synchronously complete the capture of the weighing process, print the weighing receipt with the thermal printer, and announce the weighing result by voice;

[0099] The business platform initiates a request to the weighbridge client to capture the weighing, print the weighing receipt, and voice broadcast the weighing results. The weighing room staff can view the H5 weighing results through the PC tenant weighing receipt management, gate weighing and other functions.

[0100] In this embodiment, the scrap steel operation end is created through the PC tenant end; the user logs into the business platform through the H5 driver end according to the scrap steel operation end, and sends a weighing signal to the business platform after successful login to obtain the scrap steel weighing push notification; according to the scrap steel weighing push notification, the weighing vehicle image / weighing weight image / weighing voice prompt information and weighing bill data ticket are obtained through the voice broadcast system, weighing bill printing system and DVR capture system of the scale client, and the weighing bill of the scrap steel weighing result is cached through the business platform; finally, the weighing bill management signal is fed back to the H5 driver end through the business platform to confirm the weighing weight of the scrap steel and the scrap steel operation end to realize the data storage of the scrap steel weighing result. Through a simple modular design connection, the driver user can weigh autonomously without excessive intervention from the weighing room staff, and the operation is convenient and simple, which improves the weighing efficiency.

[0101] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit it. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art should understand that they can still modify the technical solutions described in the aforementioned embodiments, or replace some or all of the technical features therein with equivalents. However, these modifications or replacements do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of the present invention.

Claims

1. A scrap steel weighing and processing system, characterized in that: Including system client, business platform and weighbridge client; The system client is connected to the business platform for communication; and the system client includes a PC tenant terminal and an H5 driver terminal; The PC tenant terminal is used to collect scrap steel demand information to obtain scrap steel operation information; and transmit the scrap steel operation information to the scrap steel operation terminal of the business platform for storage; The scrap steel operation information includes scrap steel supplier information and scrap steel customer information; The scrap steel operation end includes the scrap steel supplier end and the scrap steel client end; The H5 driver terminal is used to enable the user to log in to the business platform according to the login information set by the scrap steel operation terminal, and send a weighing signal to the business platform after successful login. The business platform controls the scale to perform the scrap steel weighing operation according to the weighing signal and obtains the scrap steel weighing push notification; The scrap steel weighing push notification includes a weight taking completion notification, a weight taking stability notification, and an H5 weighing completion notification; The weighbridge client is connected to the business platform for communication; The weighbridge client includes a voice broadcast system, a weighing slip printing system and a DVR capture system; The DVR capture system is used to obtain the weighed vehicle image and the weighed weight image according to the weight taking stability notification; The weighed vehicle image includes a vehicle head / parking space image containing a license plate number; The voice broadcast system is used to generate a weighing voice prompt message according to the weight taking completion notification; The weighing slip printing system is used to print the weighing slip data ticket according to the H5 weighing completion notification, and at the same time feed back the printing signal to the business platform; after receiving the printing signal, the business platform caches the weighing result of the scrap steel and obtains the weighing slip management signal; The business platform sends the weighing order management signal to the H5 driver terminal to confirm the weighing weight of the scrap steel and the scrap steel operation terminal to realize data storage of the scrap steel weighing results.

2. A scrap steel weighing and processing system according to claim 1, characterized in that: The business platform includes a weight detection module, a weighing bill management module, a data storage library and a scrap steel operation terminal; The scrap steel operation terminal is used to input the identity information of the cargo owner according to the scrap steel demand information to obtain the scrap steel supplier information and the scrap steel customer information; The cargo owner's identity information includes at least the cargo owner's operating location information, business license information, ID card information and bank account information; The weight detection module is used to receive the weighing signal sent by the H5 driver terminal, and notify the weighbridge client to communicate with the scrap steel weighing electronic scale head to obtain the weight value of the scrap steel weighing electronic scale head; The weighing slip management module is used to cache the weighing slip of the scrap steel after the business platform receives the printing signal, and to distinguish and manage the cached weighing slip data based on the scrap steel supplier information and the scrap steel customer information; The data repository is used to store the scrap steel weighing weight confirmed by the H5 driver side and the data of the scrap steel operation side.

3. A scrap steel weighing and processing system according to claim 1, characterized in that: The weight detection module obtains the weight value of the scrap steel weighing electronic scale head according to the rule that within the preset time threshold, the weight detection module samples the weight value of the scrap steel weighing electronic scale head multiple times, and compares the weight values ​​after multiple samplings based on the business platform; If the weight values ​​of the current multiple samplings are the same, then it is confirmed that the weight value of the electronic scale head of the scrap steel weighing is the stable weight value of the current scrap steel weighing; If at least one of the weight values ​​sampled multiple times is different, the weighing signal is resent to the weight detection module through the H5 driver terminal until a stable weight value of the scrap steel is confirmed.

4. A scrap steel weighing and processing system according to claim 1, characterized in that: The system client and the business platform use the WebSocket communication protocol for communication connection; The business platform and the weighbridge client are connected in communication via the MQTT client; The weighbridge client uses an RS232 serial port to communicate with the scrap steel weighing electronic scale head.

5. A method for treating scrap steel by weighing based on the scrap steel by weighing system according to any one of claims 1 to 4, characterized in that: The following steps are involved: S1: According to the collected scrap steel demand information, the scrap steel supplier information and scrap steel customer information are obtained through the PC tenant terminal of the system client, and the scrap steel operation information is transmitted to the business platform; S2: Move the vehicle to be weighed for scrap steel onto the weighbridge, connect the system client to the business platform through the WebSocket communication protocol; and use the H5 driver terminal to log in to the business platform based on the scrap steel supplier information and the scrap steel customer information; After successful login, a weighing signal is sent to the business platform through the H5 driver terminal, and the business platform controls the scale to perform scrap steel weighing operations according to the weighing signal; And according to the weight value rules of the weight detection module, obtain the weight completion notification, weight stability notification and H5 weighing completion notification; obtain the stable weight value of scrap steel weighing, and simultaneously generate a scrap steel weighing push notification and send it to the DVR capture system of the weighbridge client; The DVR capture system obtains the weighed vehicle image and weighed weight image according to the weight stabilization notification, and transmits them to the business platform for storage; S3: When the business platform receives the output of the DVR capture system, it sends the weight taking completion notification and the H5 weighing completion notification to the voice broadcast system and the weighing slip printing system; Generate weighing voice prompt information through the voice broadcast system according to the weight completion notification; The weighing slip printing system prints the weighing slip data ticket according to the H5 weighing completion notification, and at the same time feeds back the printing signal to the business platform; S4: After receiving the printing signal, the business platform sends the scrap steel weighing result to the weighing bill management module, caches the weighing bill and obtains the weighing bill management signal; The weighing order management signal is sent to the H5 driver terminal, and the weighing weight of the scrap steel is confirmed by the H5 driver terminal and the scrap steel operation terminal to realize the data storage of the scrap steel weighing result.

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