Multifunctional peripheral expansion board module

Abstract

The invention relates to a multi-port multi-type multifunctional expansion module with power supply control, which comprises a multifunctional expansion board with a Power USB (Universal Serial Bus) and RJ50 and RJ11 expansion ports, and four paths of downlink Power USB ports are expanded through one path of Power USB uplink port; according to the utility model, two paths of downlink RJ50 ports are expanded through one path of RJ50 uplink port; according to the utility model, two paths of downlink RJ11 ports are expanded through one path of RJ11 uplink port; the device is provided with eight paths of power supply control switching modules which are used for controlling power supply switch control of each path of Power USB and RJ50 and RJ11 downlink ports. And eight port working state indicating lamps are provided. The module is powered by external direct current 24V, the communication protocol of the module conforms to the USB2.0, RS232 and GPIO specifications, and extra driving support is not needed. According to the multi-port multi-type expansion module with the power supply control, eight ports can be conveniently and efficiently expanded from an upper computer controller, power consumption is effectively reduced through power supply control, and the multi-port multi-type expansion module with the power supply control is suitable for occasions of centralized management of multi-type peripherals.

Description

Technical Field

[0001] The present invention relates to a multifunctional expansion module with 4 Power USB ports, 2 RJ50 serial ports and 2 RJ11 cash drawer ports with controllable power supply. The module has a controllable port power supply mechanism. The module can be applied to retail commercial cash registers. When the host's native interface is insufficient, the multifunctional expansion board can be integrated and combined to realize retail application scenarios that require centralized control of multifunctional peripheral devices. Background Art

[0002] In the multi-function peripheral expansion board module, Power USB is an emerging data communication method. As a high-speed serial bus, its extremely high transmission speed can meet the application environment requirements of high-speed data transmission. USB has the advantages of fast transmission speed, easy use, hot plug support, flexible connection, and independent 24V and 12V power supply. It can connect printers, scanners, large-capacity storage devices and other peripherals. RJ50 is a data communication method that follows RS232 serial port, which stipulates the data format, baud rate, data bit, stop bit, parity and other parameters in serial port communication. It can connect printers, barcode scanners, scanners and other peripherals. RJ11 is a GPIO communication method that can be configured with multiple input and output modes and can connect multiple types of cash boxes and other peripherals. The interaction between computers and other intelligent devices and external data is mainly based on the network, USB interface and RS232 serial port. Most of the common computers, servers, laptops, etc. on the market support USB and serial port functions by default, and provide several USB ports and DB9 serial ports. However, this type of commonly used USB expansion devices for consumer use generally have the characteristics of uncontrollable power supply and relatively low power supply voltage. There are few serial ports in the form of RJ50 interfaces and few RJ11 cash drawer interfaces. In order to integrate and solve the above problems, a multi-functional peripheral expansion board module was invented. The multi-functional module can realize multi-port expansion of peripherals. At the same time, each expansion port has a power control function. The power supply can be cut off for devices that are not working to reduce energy consumption. From the two aspects of convenient expansion and reduced energy consumption of equipment, the cost performance of the whole product is improved from the cost aspect, and the scale effect of reducing costs through centralized management of batch port devices is realized. Summary of the invention

[0003] The circuit principle of the present invention is based on USB, GPIO, serial port expansion chip and power control chip, realizing the expansion function of 4 Power USB ports, 2 RJ50 serial ports and 2 RJ11 cash box ports of multifunctional peripherals. The module adopts a DC 24V power supply for external power supply, which is converted into the DC 24V and 12V power supplies required by the Power USB device inside the module, and the DC 24V power supply is converted into the DC 5V and 12V power supplies required by the RJ50 and RJ11 devices, and the DC 24V power supply is converted into the DC 5V power supply required by the chip. According to the schematic diagram, the module PCBA is realized by a 4-layer board, and the appearance size is 140mm*50mm*20mm in length, width and height. The Power USB port adopts a Micro USB standard plug for connecting to the host computer USB controller, and 4 POWERUSB standard sockets are used for downstream POWER USB device connection. RJ50 adopts a serial port standard composite plug for connecting to the host computer serial port controller, and 2 RJ50 standard sockets are used for downstream RJ50 serial port device connection. RJ11 uses a composite GPIO interface plug to connect to the host controller, and 2 RJ11 standard sockets are used to connect to the RJ11 interface cash drawer device. Each port has a working status indicator. When the device is connected normally, the indicator light is green, and when it is not connected normally, the indicator light is red. BRIEF DESCRIPTION OF THE DRAWINGS

[0004] Attached Figure 1 It is a schematic diagram of the functional modules of the present invention The meaning of the digital symbols in the attached figure: 1. RJ50 socket, upstream serial port 2. RJ11 socket, upstream GPIO port 3. Micro USB socket, upstream USB port 4. 12V power output socket 5. 8-way expansion port status indicator 6. 2-way RJ50 downstream expansion port 7. 2-way RJ11 downstream expansion port 8. 2-way 12V Power USB downstream expansion port 9. 2-way 24V PowerUSB downstream expansion port 10. Module DC 24V power supply interface. DETAILED DESCRIPTION

[0005] The working mode of this multi-function expansion board module is to connect the upstream USB port of this module to the host device with USB port such as the host computer through the USB data cable, and the 4 downstream Power USB ports can be connected to the standard Power USB device, and the upstream RJ50 port of this module is connected to the host device with serial port such as the host computer through the serial port data cable, and the 2 downstream RJ50 ports can be connected to the standard RJ50 serial port device, and the upstream RJ11 port of this module is connected to the host device with GPIO signal port such as the host computer through the GPIO data cable, and the 2 downstream RJ11 ports can be connected to the standard RJ11 cash box device. This module can be powered by a DC 24V external power supply. This module is driver-free by default, and no additional driver needs to be installed for this module. However, whether the Power USB device, RJ50 serial port device, and RJ11 cash box device connected to this module need a dedicated driver is determined by the device itself. The host computer Power USB and RJ50 and RJ11 controllers can realize the power switch control of each expansion downstream port of this module. To sum up, the present invention realizes the use of a multi-functional expansion module to realize up to 3 types of port expansion functions, and the expanded multi-functional port has a power control function, which can realize independent power switch control of each port, and can easily realize multi-type port expansion requirements and meet the application scenarios of centralized control of multi-functional peripheral devices.

Claims

1. A multifunctional peripheral expansion board module, Power USB Features: The module communication protocol complies with the USB2.0 specification, and integrates an upstream USB port with a Micro USB standard plug for connecting to the host computer USB controller, and integrates 4 USB downstream ports with POWER USB standard sockets for connecting to POWER USB devices. RJ50 Features: The module communication protocol complies with the serial port communication specification, and integrates an upstream serial port with a serial port standard composite plug for connecting to the host computer serial port controller, and integrates an RJ50 port with 2 RJ50 standard sockets for connecting to RJ50 serial port devices. RJ11 Features: The module communication protocol complies with the GPIO communication protocol specification, and integrates an upstream port with a composite GPIO interface plug for connecting to the host computer controller, and integrates an RJ11 port with 2 RJ11 standard sockets for connecting to RJ11 interface cash drawer devices.

2. According to the multifunctional peripheral expansion module of claim 1, the Power USB expansion module function is: Features: The 4 downstream Power USB ports have independent power switch control functions, and the host computer USB controller can send instructions to control the port power switch. RJ50 expansion module function, characterized by: 2 downstream RJ50 ports have independent power switch control functions, and the host computer serial port controller can send instructions to control the port power switch. RJ11 expansion module function, characterized by: 2 downstream RJ11 ports have independent power switch control functions, and the host computer serial port controller can send instructions to control the port power switch.

3. The Power USB and RJ50 and RJ11 expansion modules according to claim 2, Features: Each port has an independent device working status indicator light. If the device connection is working normally, the green light is on; if the device connection is abnormal, the red light is on.

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