RU85766U1 - TERMINAL FOR CHARGING PORTABLE DEVICES BATTERIES - Google Patents

Abstract

1. A terminal for charging batteries of portable devices, including a USB controller for controlling a multi-port circuit for selecting and connecting channels of portable devices, a means for paying for services, at least one port for connecting a portable device and at least one socket for connecting an adapter, as well as tools for selecting a portable device model. ! 2. The terminal according to claim 1, characterized in that it further comprises an electronic lock that blocks access to the nodes of the device.

Description

The present invention relates to battery chargers for portable devices (mobile phones, laptops, PDAs), namely, to terminals installed in public places.

Currently, there are many terminals that are intended mainly for payment of services.

Instant payment terminals are located in places with high traffic (entertainment centers, metro, supermarkets and shopping centers, stations, gas stations, institutes, etc.).

The first payment terminals appeared in Moscow in 2004. In addition, banking payment systems are actively developing. In December 2008, more than 10 thousand payment devices were installed in Moscow.

However, no less necessary terminals for charging batteries of mobile phones, laptops, PDAs and other portable devices used by almost everyone are still not known.

Portable devices include a battery that provides them with power and requires periodic recharging from an external source of electricity.

Modern models of cell phones are sold together with a charging unit (converter or adapter) that connects to the phone itself through the appropriate connector and provides the required voltage and current.

One of the problems faced by all mobile phone users is that the battery often requires recharging. The user is forced to carry a converter unit with him and connect it, for example, to a household power supply network to charge the phone’s battery. Despite the fact that the size and weight of the converter unit are reduced due to the continuous improvement of phone models, the need to carry it with you is inconvenient.

In addition, there are situations when the phone is discharged, you need to make an urgent call, and there is no power supply nearby.

The technical result of the patented utility model is the simplification and accessibility of charging portable device batteries and expanding the functionality of the terminal by installing it in public places, as well as the convenience of using the terminal due to the independence of the adapter and the mains.

The claimed technical result is achieved through the use of a terminal for charging batteries of portable devices, including a USB controller for controlling a multi-port circuit for selecting and connecting channels of portable devices, a means for paying for services, at least one port for connecting a portable device and at least one an outlet for connecting the adapter, as well as a means of choosing a model of a portable device.

The operation of the terminal is based on controlling a multiport circuit for selecting and connecting channels through a USB controller of the system unit of a personal computer, to which, in turn, any portable devices can be connected using various circuit options.

The terminal kit for charging portable device batteries, in addition to the above nodes, also includes a monitor, a device for paying for services, a personal computer, a printing device, tools for choosing a phone model, a socket, or a port, and additional services are selected through touch communication with the control program terminal.

In addition, to block the terminal from unauthorized actions by third parties, it can additionally be equipped with an electronic lock that blocks access to the nodes of the device.

For compactness of the device and ease of use, the tools for choosing a phone model, socket, or port are buttons made directly on the terminal or touch buttons displayed on the monitor.

The description of the terminal is explained below with reference to the figures.

1 shows a terminal;

Figure 2 - interface of the main menu;

Figure 3 - charging interface of a portable device with 16 ports for connecting the main models of portable devices known in the Russian Federation;

Figure 4 is a schematic diagram of a device;

Figure 5 is a structural diagram of a processor made from the calculation of the need to control twenty channels;

Figure 6 - stabilization diagram of one of the channels;

7 is a control circuit of an electronic lock;

On Fig - control circuit sockets;

In Fig.9 - triac switch;

10 is a power circuit diagram of a charging board;

11 is a diagram of a crystal oscillator clock frequency of the processor atmega 16;

12 is a diagram of an LED panel.

The terminal shown in figures 1-3 contains a housing 1 with a built-in device for paying for services 2, a monitor 3, ports 4 for connecting portable devices and sockets 5 for connecting an adapter. In the above example, the monitor screen includes touch buttons 6.

The terminal operates as follows. Mobile phones, as well as portable mobile devices requiring periodic charging of batteries, are charged by selecting the appropriate menu item.

By pressing the menu button "Phone Charging" or "Socket" (figure 2), the program offers to select a specific port (interface) to connect the device (mobile phone, PDA, laptop, etc.) to charge the battery, as well as using the user’s charging adapter, you can turn on one or more of the proposed sockets (220 V) (figure 3).

The implementation of this solution is based on controlling a multiport circuit for selecting and connecting channels through a USB controller of the system unit of a personal computer, to which, in turn, any portable devices can be connected using various circuit options.

In this example (figure 4) used:

- the first 16 channels - for connecting interface cords of any selected brands of mobile phones. The amount of these channels can vary to any number needed.

- Channel 17 is used to control an electronic latch that blocks the opening of the terminal door.

- 18-20 channels are adapted to control electronic switches for supplying power to sockets (220 V), which the terminal is equipped with, in order to provide the possibility of connecting any device with a capacity of up to 700 watts.

The number of channels and their functional purpose can be changed by supplementing one or another channel with the circuit necessary to control any peripheral device.

A certain digital code formed by the program, from pins 2 and 3 of the USB connector (J2, CON4) (Fig. 4), through the limiting resistors R6 and R7, it goes to pins 9.11 of the processor (PC0, PC2, respectively) of a decoding circuit made on a chip ( chip) ATMEL (atmega16), designed specifically to perform the above tasks. The figure 5 shows the structural diagram of the processor, made from the calculation of the need to control twenty channels (it is possible to expand to any number of channels).

After processing and decoding the commands from the pins PA n and PC n of the processor (there are 16 in all for this version), the control signal is sent to the stabilization circuit for the current and voltage of the channel that is necessary for switching on (in order to charge the battery).

For example, programmatically, the first charging port is selected.

After decoding the command received via the USB port, the positive potential of +4.5 V through the limiting resistor 1R14 goes to the base of the 1VT14 NPN BES transistor, which functions as an electronic key, from the output of the RAO processor. As a key, you can use any npn transistor with a maximum current EK = 300 mA.

Further, when opening the transistor 1VT14, the voltage drop across the resistor 1R15 allows you to open the stabilizer 1D4, the input of which is +12 V, made on the LM2941C chip. Capacitors 1C14 at the input and 1C15 perform voltage smoothing functions. The voltage divider on the resistors 1R16, 1R17 is selected so that the output stabilized voltage on the leg 5 is 5.6 V.

Through resistance 1R18 (current limiter), voltage is supplied to block J9 CON16, through which an LED panel is connected, indicating that a voltage has been applied to port No. 1.

The diode 1VD2 in the stabilization circuit is designed to exclude the discharge of the battery connected to the interface cord of the first channel through the J8 CON24 block, as well as to break the indication circuit of the serviceability of the battery charging circuit before using the device. In other words, when you connect the phone to the first port, plus the battery is supplied through the resistance 1R19 to the corresponding terminal pin J10 CON16, through which the LED panel with red LEDs turns on, indicating that the circuit is working. The diode 1VD2 is thus closed. When the 1D4 voltage regulator is turned on, the supply voltage of 5.6 V is supplied through the 1VD2 diode to the J8 block and through the interface cord to the contacts of a mobile phone or other device on which it is necessary to charge the battery with these charging characteristics.

The stabilization scheme of one of the channels is shown in Fig.6.

Analyzing statistics on the use of the most common brands of mobile phones, we came to the conclusion that the optimal number of interface cords for charging batteries can be 14-16 brands. Therefore, the number of ports in this example is selected based on this data. The schematic solution allows you to change these indicators.

To implement the security of unauthorized opening of the terminal, a control channel for the electronic lock (electronic latch) of the terminal door or any other device is provided. A fragment of the circuit shown in figure 7.

Upon receipt of the appropriate command via the USB port, the control positive potential appears at the output of the PBO of the atmega16 processor (leg 40), which is fed to input 2 (ln1) of the D3 chip (IPS042G). This is a key with an output voltage amplification of up to 50 V and a maximum peak load current of up to 3A. When the key is opened, the voltage +12 V through the load connected to the J4 connector CON2, and through the public key D1 (legs 7 and 8) is closed to the ground bus circuit. As a load, you can use any device with a supply voltage = 12 V, resistance up to 500 Ohms. The maximum current is up to 3 A.

In order to provide the possibility of using 220 V sockets, the circuit provides for the possibility of their inclusion. The presented version of the manufactured board allows you to control the power (on / off) of three outlets.

In figures 8 and 9 depict fragments of circuit elements. In particular, FIG. 8 shows a diagram of one of three electronic keys. From the atmega16 processor (legs 41, 42, 43, respectively, they are called PB1, PB2 and PB3, for controlling three channels), the positive potential is fed through the resistance R10 (R11, R12 for each channel, respectively) to the base of the transistor VT1 (VT2, VT3, respectively , for each channel) and opens it (them), the emitter-collector junction. To the collector of each transistor, through the connectors J5 (J6, J7) CON2, a circuit (Fig. 9) of a 220 V triac transistor is connected with control via the optical pair VD1. Through the optical pair VD1 (Fig. 9, connector J1 CON2) +12 V connected to the J5 (J6, J7) CON2 connector, +12 V is supplied to the collector of the transistor switch of Fig. 8 and, when the latter is opened, the triac opens (Fig. 9), via contacts J2 CON2 which 220 V sockets are included

The triac switch of Fig.9 is made in the form of a separate board for each outlet (controlled device).

The power (+5 V) of the atmega16 processor is via the USB port (see a fragment of the circuit of Fig. 10). Next, through a filter assembled on a capacitor C9 +5 V is supplied to the input of a voltage regulator with a low noise level D2 (LP2985). This is a device with adjustable capacitors C10, C11, C12 output voltage. C13 capacity is a smoothing capacity. From output 5 of the D2 chip, a highly stabilized supply voltage is supplied to input 5 (VCC) of the processor.

Power supply (+12 V) is used to power the current and voltage stabilization circuit of the charge circuit of mobile phone batteries, as well as to control 220 V load switches and electronic latch (lock) control circuits.

To ensure the operation of the amtel16 processor, its inputs XTAL1, XTAL2 (pins 7 and 8) are supplied with a stabilized clock frequency of 12 MHz from the crystal oscillator Q1 (Fig. 11).

For visual monitoring of the status of the enabled port, a connection diagram through the connectors of the LED panel is made according to the technology of the so-called “flexible keyboard”.

In the off state, there is no indication. When connected to the interface cord of the selected phone model, the circuit is designed so that the red LED is illuminated, which warns the user about the health of the interface trailer and the correct choice in accordance with the brand of the phone.

When paying for cash, the pre-selected channel is switched on programmatically, and the LED circuit indicates with a green light that the phone is charging.

The LED panel diagram is shown in Fig. 12.

In FIG. 12, for clarity, two superimposed parts of the product are disconnected. The upper part is the front side, the lower one is the working area with conductive paths and planar LEDs. Each numbered window of the front part corresponds to an LED on the bottom of the panel.

Port Status Display Indication:

- a pale red glow - the phone is connected;

- bright green glow - stabilized charging power is supplied to the port;

- bright red light - port contacts are short-circuited (faulty).

When the port is short-circuited, the stabilization circuit will trip, as The maximum temperature will be exceeded. When the temperature drops, it will turn on again.

The voltage at the charging port (calculated) is 5.5 V.

Charging current varies depending on the state of the battery and ranges from 200 to 800 mA, which corresponds to the factory parameters of the phones.

The software is modular, especially for managing this circuit and allows you to turn on all channels at any time, except busy ones. In this case, it is possible to observe the remaining time on the monitor until the end of the charging time for each port (channel). During charging, the software is designed so that the multimedia terminal can be used to use other functions noted in the description of the terminal itself.

The power of the power supply unit (12V) must be selected based on how many ports will be used for charging at the same time. If we assume that this figure will be equal to 10, then, accordingly, the power supply must be selected no less than the power used for charging (the power supply is installed separately). You can use the power supply for the system unit of the computer.

Claims (2)

1. A terminal for charging batteries of portable devices, including a USB controller for controlling a multi-port circuit for selecting and connecting channels of portable devices, a means for paying for services, at least one port for connecting a portable device and at least one socket for connecting an adapter, as well as tools for selecting a portable device model. 2. The terminal according to claim 1, characterized in that it further comprises an electronic lock that blocks access to the nodes of the device.