CN201355812Y - Wireless access device capable of function conversion - Google Patents

Abstract

The utility model relates to a wireless access device capable of realizing function conversion, which adopts a conversion control module to control a wireless access module and a WLAN/LAN control module; when a first stage control signal is outputted, a conversion executing module controls the wireless access module and the WLAN/LAN control module to work, and the device stays at a Router mode and controls a first bus switch to be enabled; when the output end of the conversion control module outputs a second state control signal, the conversion executing module controls the wireless access module to work, and the device stays at the Modem mode then and controls a second bus switch to be enabled. The wireless access device capable of realizing the function conversion integrates two access functions, so that the work mode can be flexible to switch; at the Modem mode, the wireless broadband access service can be provided to a single user; at the Router mode, more users can share the same bandwidth, thereby realizing multiple functions of the device, and being used as an ideal product to substitute the cabled network for the household and the SOHO users.

Description

Wireless access device capable of function conversion

technical field

The utility model relates to a wireless access device capable of realizing function conversion.

Background technique

Along with the development of 3G technology, the capability of wireless data communication is gradually enhanced, making it more and more widely used in data access. There are currently two types of products that use the 3G network to provide users with wireless data intervention services. One is the 3G data card. Its principle is to connect the 3G module to a notebook or desktop through a USB port to provide Internet data services. The product can only provide data services for a single user, which is generally called a Modem device, that is, a modem; another product integrates a 3G module and a WLAN/LAN (Wireless Local Area Network/Local Area Network, wireless local area network/local area network) in the same On one system, when the device is connected to the Internet via a 3G network, more users can share Internet data through WLAN/LAN. This type of product allows more users to share an uplink data channel, generally called a Router. That is, the router.

However, in the actual use process, especially in the office environment, the single-user data bureau service and multi-user data service are often alternated. As the alternate use of Modem and Router, it often brings troubles to users and also causes equipment resources. waste.

Utility model content

The utility model overcomes the above disadvantages and provides a wireless access device capable of realizing function conversion.

The technical solution adopted by the utility model to solve the technical problem is: a wireless access device capable of realizing function conversion, including a conversion control module, a conversion execution module, a wireless access module, a WLAN/LAN control module, an external interface module and Two bus switches, the control signal output terminals of the conversion control module are respectively connected to the conversion execution module and the enabling terminals of the two bus switches, and the output terminals of the conversion execution module are respectively connected to the wireless access module and the WLAN /LAN control module, the enable states of the two bus switches are opposite, the first bus switch is used to control the data on-off between the WLAN/LAN control module and the wireless access module, and the second bus The switch is used to control the data on-off between the wireless access module and the external interface module;

When the output terminal of the conversion control module outputs the first state control signal, the conversion execution module controls the operation of the wireless access module and the WLAN/LAN control module, controls the first bus switch to enable, and simultaneously turns off the second bus switch;

When the output terminal of the conversion control module outputs the second state control signal, the conversion execution module controls the operation of the wireless access module, controls the second bus switch to be enabled, and simultaneously turns off the first bus switch.

The conversion execution module may adopt a dual-output power converter, and the power input end of the power converter is connected to the interface module.

The conversion control module can adopt a toggle switch.

The bus switch can be a dual low-voltage high-bandwidth bus switch.

The external interface module can be a USB Device interface module.

The wireless access module can adopt a full standard 3G module.

The utility model integrates two access functions into one, and can flexibly switch working modes. In Modem mode, it can provide wireless broadband access service for a single user. In Router mode, more users can share the same bandwidth, realizing The multi-functional use of the equipment can be used as an ideal product for home and SOHO users to replace cable.

Description of drawings

Fig. 1 is the circuit schematic diagram of the utility model.

Detailed ways

As shown in Fig. 1, the utility model comprises conversion control module, conversion execution module, wireless access module U1, WLAN/LAN control module U2, external interface module U3 and two bus switches S1, S2, described conversion control module A toggle switch K is adopted, the conversion execution module adopts a power converter PMU, and the control signal output terminals of the module switch K are respectively connected to the enabling terminals of the power converter PMU and two bus switches S1 and S2, wherein the power The enabling terminal OE2 of the converter PMU is active high, and the enabling states of the two bus switches S1 and S2 are opposite, and a dual low-voltage high-bandwidth bus switch is used, and the enabling terminal BOE1 of the bus switch S1 is active high; the bus The enable terminal #BOE2 of the switch S2 is active low. The output end of the power converter PMU is respectively connected to the wireless access module U1 and the WLAN/LAN control module U2, and the data input end and data output end of the bus switch S1 are respectively connected to the WLAN/LAN control module U2 and The wireless access module U1, the data input end and the data output end of the bus switch S2 are respectively connected to the wireless access module U1 and the interface module U3; the power converter PMU adopts a dual output DC-DC conversion that can be controlled separately The power input terminal of the power converter is connected to the external interface module U3. Wherein, the external interface module U3 may be a USB interface module. The wireless access module U1 may adopt a full standard 3G module.

Based on above-mentioned structure, the working process of the present utility model is as follows:

The main control signal MainCtrl sent by the toggle switch K can maintain two states: "0" or "1", that is, output high level or low level; and the output logic of the power converter PMU and the bus switches S1, S2 The switching logic of is shown in the table below:

MainCtrl VCC1_3.3 VCC2_3.3 S1 S2 0 3.3v 0v Disconnect Open

1 3.3v 3.3v Open Disconnect

When the main control signal MainCtrl is switched to a high level (MainCtrl=1), the power converter PMU enables the terminal VCC2_3.3 (VCC2_3.3=3.3V) to output and supply power to the WLAN/LAN control module U2, and at the same time it is turned on through S1 The USB channel between the WLAN/LAN control module U2 and the wireless access module U1, and the system works in the 3GRouter mode at this time. At this time, the USB port is only used as a power input port. At this time, the 3G module is a slave device of the WLAN/LAN control module U2, and is initialized and configured by the WLAN/LAN control module U2, so that it can work correctly in the corresponding network environment.

When the main control signal MainCtrl is switched to low level (MainCtrl=0), the power converter PMU turns off the output of VCC2_3.3 (VCC2_3.3=0V), and at the same time turns off the connection between the WLAN/LAN control module U2 and the wireless access module U1 The USB channel, so that it is in a high-impedance state. At this time, the WLAN/LAN control module U2 is in the off state, and only the wireless access module U1, that is, the 3G module, relies on the VCC1_3.3V output voltage to work normally, and the system works in 3G Modem mode. At this time, the USB port serves as a data communication port and provides power input at the same time. At this time, the user can configure the 3G module through the computer connected to it to make it work normally in the corresponding network environment. In this mode, the WLAN/LAN control module U2 is in a dormant state.

Therefore, the utility model can be made to work in any network environment through software updates well known to those skilled in the art. In 3G modem and 3G router mode, this product can support all 3G network standards, including GPRS, EDGE, UMTS, HSDPA, HSUPA, CDMA 1x, EVDORev.0, EVDORev.A.

The utility model can be a 3G data access device designed based on a 3G module and can flexibly switch working modes. When the switch is switched to 3G Modem mode, this device can be used as a 3G USB data card, connected to any 3G network (EVDO/HSDPA/GSM/GPRS/EDGE) to provide high-speed data access services for personal computer users. When the switch is switched to 3G Router mode, the device can share data with more users via WLAN. It can be used as an ideal product for home and SOHO users to replace cable. At the same time, in the two modes of 3G Modem and 3G Router, the 3G module supports GPS positioning function, which can provide users with positioning, tracking, navigation and other services. The utility model can use a high-performance SoC (BCM5354) as the main processor of the WLAN/LAN control module U2, and the USB device interface can provide power for the device while serving as a data communication interface, so the appearance design is compact and concise, and the functional structure is flexible and easy to use .

The above is a detailed introduction to the wireless access device provided by the utility model that can realize function conversion. In this paper, specific examples are used to illustrate the principle and implementation of the utility model. The description of the above embodiments is only for helping understanding The method of the present utility model and its core idea; at the same time, for those of ordinary skill in the art, according to the idea of the present utility model, there will be changes in the specific implementation and scope of application. In summary, the content of this specification It should not be understood as a limitation of the present utility model.

Claims (6)

1. the radio reception device that can realize function conversion, it is characterized in that: comprise the conversion and control module, the conversion Executive Module, radio access module, the WLAN/LAN control module, external interface module and two bus switchs, the control signal output ends of described conversion and control module connects the Enable Pin of described conversion Executive Module and two bus switchs respectively, the output of described conversion Executive Module connects described radio access module and WLAN/LAN control module respectively, the enabled state of described two bus switchs is opposite, the data input pin of described first bus switch is connected described WLAN/LAN control module and radio access module respectively with data output end, and the data input pin of described second bus switch is connected described radio access module and interface module respectively with data output end;

When the output of described conversion and control module was exported first state control signal, described conversion Executive Module was controlled described radio access module and the work of WLAN/LAN control module, and controlled first bus switch and enable, and closed second bus switch simultaneously;

When the output of described conversion and control module was exported second state control signal, described conversion Executive Module was controlled described radio access module work, and controlled second bus switch and enable, and closed first bus switch simultaneously.

2. the radio reception device of realizing the function conversion according to claim 1, it is characterized in that: described conversion Executive Module adopts the dual-output power supply transducer that can enable, the signal input part of described power supply changeover device links to each other with described conversion and control module, and output links to each other with described radio access module, WLAN/LAN control module.

3. the radio reception device of realizing the function conversion according to claim 1, it is characterized in that: described conversion Executive Module adopts the dual-output power supply transducer that can enable, the power input of described power supply changeover device links to each other with described external interface module, when described equipment connection Laptop works under the Modem pattern, do not need external power source to get final product operate as normal.

4. the radio reception device of realizing the function conversion according to claim 1 and 2, it is characterized in that: described conversion and control module adopts toggle switch, when described conversion and control module is exported first state of a control, equipment work is under the Router pattern, when described conversion and control module was exported second state of a control, equipment work was under the Modem pattern.

5. the radio reception device of realizing the function conversion according to claim 1 and 2, it is characterized in that: the two-way low pressure high-bandwidth bus switch of described bus switch for enabling, described bus switch 1 is used to control the data communication between described radio access module and the WLAN/LAN control module, and described bus switch 2 is used to control the data communication between described radio access module and the external interface module.

6. the radio reception device of realizing the function conversion according to claim 1 and 2, it is characterized in that: described external interface module is a USB Device interface module, when described equipment work in Modem pattern following time, described external interface provides power supply input and normal data communication ability for equipment.

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