CN203071926U - Low-power multi-band signal transceiver device - Google Patents

Abstract

The utility model relates to a low-power multi-band signal transceiver device, which includes a functional module and a power supply module for power supply, a power switch is arranged between the functional module and the power module, and a low-power main Control chip, dual-interface smart card chip, high-frequency radio frequency chip and radio frequency chip power control module, there is also a signal detection module in the function module, the signal detection module provides a signal to the main control chip to make the main control chip generate an external interrupt, the signal At the same time, the detection module controls the power supply of the main control chip to be powered off through the power switch according to the signal. The low-power multi-band signal transceiver device described in the utility model solves the problem of interconnection and intercommunication of active and passive, high-frequency and low-frequency radio frequency signals, fundamentally solves the problem of compatibility between the two, and realizes different frequency bands The radio frequency signals communicate with each other, and the device has the advantages of low power consumption and good real-time performance of card swiping status transmission.

Description

A low-power multi-band signal transceiver device

technical field

The utility model relates to a multi-band signal transceiver device, in particular to a multi-band signal transceiver device with low power consumption.

Background technique

With the vigorous development of the Internet of Things, radio frequency technology has advanced by leaps and bounds. Various IoT applications emerge in endlessly, including active signals and passive signals; RF frequencies range from 30K, 13.56MHz to 5.8G. Because mobile phones have display functions, key input functions, network functions and smart card STK functions, and are very popular, they have natural advantages when used in the Internet of Things and payment. Some existing radio frequency devices for mobile payment and Internet of Things have also begun to be used on mobile phones. There are 13.56MHz communication solutions and 2.4G high-frequency solutions.

Each of these different communication schemes has its advantages and limitations.

IC cards and other products using 13.56MHz frequency communication have occupied a dominant position in various fields such as bank payment, city card, access control, etc., and have formed relatively complete various technical standards and application specifications. Corresponding card readers and terminals are basically arranged in each application place. For example, the non-contact CPU card uses 13.56MHz frequency communication, and can work in a passive way. But it is difficult to meet the application in mobile payment and Internet of Things. Because communication in this frequency band is difficult to penetrate mobile phones, and it can only be used for short-distance communication. Unless the mobile phone is customized, this frequency band is difficult to apply to the field of mobile payment. Even if the mobile phone is customized, it cannot meet the requirements of the Internet of Things for communication distance and communication speed.

The high frequency similar to 2.4G can easily penetrate mobile phones, which is more suitable for mobile payment and Internet of Things applications. There are already some mobile phone SIM cards called RF-SIM cards that use 2.4G high frequency for mobile payment. However, because it is a brand new product, existing card readers or terminal devices in various fields are not compatible with it, and it does not conform to the existing bank payment specifications, so it is difficult to promote it on a large scale. Simultaneously also because of the reason of power consumption, can only adopt active mode, often need charging or replace battery, bring inconvenience to the user.

It can be seen that the products using these two communication frequency bands in application use their respective advantages in principle, but also cannot avoid their respective defects. Moreover, when the two (referring to 13.56MHz and 2.4G) are used at the same time, there is still a problem of high power consumption, which affects the normal use of mobile phones.

Utility model content

In view of the defects in the prior art, the purpose of this utility model is to provide a low-power multi-band signal transceiver device, which solves the problem of active and passive, high-frequency and low-frequency radio frequency signal interconnection, fundamentally It solves the problem of compatibility between the two, realizes the mutual communication between radio frequency signals in different frequency bands, and the device has the advantages of low power consumption and good real-time transmission of card swiping status.

For achieving above object, the technical scheme that the utility model takes is:

A low-power multi-band signal transceiving device, including a functional module 100 and a power supply module 200 for powering it, is characterized in that a power switch 300 is arranged between the functional module 100 and the power module 200,

The function module 100 is provided with a main control chip 101 of low power consumption, a dual-interface smart card chip 102, a high-frequency radio frequency chip 103 and a radio frequency chip power control module 104,

The main control chip 101 realizes the 13.56MHz card reader to swipe the card and collects the card swipe data through the dual-interface smart card chip 102,

The main control chip 101 exchanges data with the RF-SIM card of the mobile phone or other high-frequency receiving devices through the high-frequency radio frequency chip 103,

The main control chip 101 controls the power supply or power-off of the dual-interface smart card chip 102 and the high-frequency radio frequency chip 103 through the radio frequency chip power control module 104,

In the functional module 100, there is also a signal detection module 105 for detecting 13.56MHz signals. The signal detection module 105 provides a signal to the main control chip 101 to cause the main control chip 101 to generate an external interrupt, and the main control chip 101 passes through the The high-frequency radio frequency chip 103 transmits the card swiping information of the dual-interface smart card chip 102 to the RF-SIM card of the mobile phone or other high-frequency receiving device interaction data, and the signal detection module 105 controls the on-off of the power switch 300 according to the signal at the same time. The switching of 300 realizes the power supply or power off of the main control chip 101 and the radio frequency chip power control module 104 .

On the basis of the above technical solution, the dual-interface smart card chip 102 is a 13.56MHz radio frequency chip with a built-in 13.56MHz antenna, and the high frequency radio frequency chip 103 is a 2.4GHz radio frequency chip.

Based on the above technical solutions, the power supply module 200 is provided with a battery unit 202 and a power management module 201 for managing the battery unit 202 .

On the basis of the above technical solution, the signal detection module 105 is an AC-to-DC circuit or chip.

On the basis of the above technical solutions, the signal detection module 105 is a half-wave or full-wave rectification circuit converting AC to DC.

On the basis of the above technical solutions, the signal detection module 105 includes:

Diode, the anode of the diode is connected to one end of the 13.56MHz antenna, and the other end of the 13.56MHz antenna is grounded,

The cathode of the diode is connected to one end of the resistor, the other end of the resistor is connected to one end of the capacitor, and the other end of the capacitor is grounded.

On the basis of the above technical solution, a trigger circuit with a manual trigger button is also provided in the functional module 100, and the trigger circuit provides a signal to the main control chip 101 to cause the main control chip 101 to generate an external interrupt. The signal transmits the card swiping information of the dual-interface smart card chip 102 to the RF-SIM card of the mobile phone or other high-frequency receiving device interaction data through the high-frequency radio frequency chip 103, and the trigger circuit controls the on-off of the power switch 300 according to the signal at the same time. The switching of 300 realizes the power supply or power off of the main control chip 101 and the radio frequency chip power control module 104 .

The low-power multi-band signal transceiver device described in the utility model solves the problem of interconnection and intercommunication of active and passive, high-frequency and low-frequency radio frequency signals, fundamentally solves the problem of compatibility between the two, and realizes different frequency bands The radio frequency signals communicate with each other, and the device has the advantages of low power consumption and good real-time performance of card swiping status transmission.

Description of drawings

The utility model has following drawings:

Fig. 1 is the structural representation of the utility model,

Figure 2 The embodiment of the signal detection module.

Detailed ways

Below in conjunction with accompanying drawing, the utility model is described in further detail.

As shown in Figure 1, the multi-band signal transceiving device with low power consumption described in the utility model includes: a functional module 100 and a power supply module 200 for powering it, and a power switch is arranged between the functional module 100 and the power supply module 200 300,

The function module 100 is provided with a main control chip 101 of low power consumption, a dual-interface smart card chip 102, a high-frequency radio frequency chip 103 and a radio frequency chip power control module 104,

The dual-interface smart card chip 102 is a 13.56MHz radio frequency chip with a built-in 13.56MHz antenna, and the high frequency radio frequency chip 103 is a 2.4GHz radio frequency chip.

The main control chip 101 realizes the 13.56MHz card reader to swipe the card and collects the card swipe data through the dual-interface smart card chip 102,

The main control chip 101 exchanges data with the RF-SIM card of the mobile phone or other high-frequency receiving devices through the high-frequency radio frequency chip 103,

The main control chip 101 controls the power supply or power-off of the dual-interface smart card chip 102 and the high-frequency radio frequency chip 103 through the radio frequency chip power control module 104,

The power module 200 is provided with a battery unit 202 and a power management module 201 for managing the battery unit 202,

In the functional module 100, there is also a signal detection module 105 for detecting 13.56MHz signals. The signal detection module 105 provides a signal to the main control chip 101 to cause the main control chip 101 to generate an external interrupt, and the main control chip 101 passes through the The high-frequency radio frequency chip 103 transmits the card swiping information of the dual-interface smart card chip 102 to the RF-SIM card of the mobile phone or other high-frequency receiving device interaction data, and the signal detection module 105 controls the on-off of the power switch 300 according to the signal at the same time. The switching of 300 realizes the power supply or power off of the main control chip 101 and the radio frequency chip power control module 104 .

The utility model realizes both low power consumption and real-time transmission of card swiping status by setting a signal detection module 105 for detecting 13.56MHz signals, and its principle is as follows:

When the device is in a low power consumption state, the signal detection module 105 works normally, the dual-interface smart card chip 102 is in a passive working mode, and the power switch 300 is disconnected so that the main control chip 101, the radio frequency chip power control module 104 and the high frequency radio frequency chip 103 Both are in the power-off state; when the device enters the sensing area of the 13.56MHz card reader and exits from the sensing area, the dual-interface smart card chip 102 completes the card swiping in the passive working mode, and the signal detection module 105 detects the swiping card operation, and sends The power switch 300 sends a signal to make the power switch 300 connected, and the main control chip 101 and the radio frequency chip power control module 104 obtain power supply from the power supply module 200, and the radio frequency chip power control module 104 also makes the high frequency radio frequency chip 103 obtain power supply, and simultaneously the signal The detection module 105 also sends a signal to the main control chip 101 to cause the main control chip 101 to generate an external interrupt, to notify the main control chip 101 that a card swiping action has just occurred, and the main control chip 101 enters a normal working state, and through the high-frequency radio frequency chip 103, the The latest card swiping status is sent to the mobile phone's RF-SIM card or other high-frequency receiving devices in real time. Then the power switch 300 is turned off, the main control chip 101 and the radio frequency chip power control module 104 are powered off, the high frequency radio frequency chip 103 is also powered off, and the device enters the low power consumption state again. In this way, the device can be in the state of the lowest standby current, and once the user generates a card swiping action, the device can act immediately.

On the basis of the above technical solution, as shown in FIG. 2 , the signal detection module 105 is an AC-to-DC circuit or chip, specifically a half-wave or full-wave rectification circuit from AC to DC.

When the device enters the sensing area of the 13.56MHz card reader, a 13.56MHz AC waveform is generated on the 13.56MHz antenna in the dual-interface smart card chip 102 (the 13.56MHz signal sensed by the 13.56MHz antenna generally reaches an amplitude above 3V), and the signal detection The module 105 converts the AC waveform into a DC output, and the DC output serves as a signal for the main control chip 101 to generate an external interrupt. The DC output is also used as a control signal for turning on and off the power switch 300 .

The signal detection module 105 for detecting the 13.56MHz signal is easy to implement. On the basis of the above technical solution, as shown in FIG. 2, the signal detection module 105 includes:

Diode, the anode of the diode is connected to one end of the 13.56MHz antenna, and the other end of the 13.56MHz antenna is grounded,

The cathode of the diode is connected to one end of the resistor, so that the AC waveform becomes a half-wave signal after passing through the diode and the resistor.

The other end of the resistor is connected to one end of the capacitor, and the other end of the capacitor is grounded, so that the half-wave signal charges a small-capacity capacitor to generate a DC rising waveform, and the DC rising waveform output generates a rising edge and a falling edge. The rising edge and/or falling edge is used as a signal to make the main control chip 101 generate an external interrupt, and at the same time, the rising edge and/or falling edge is used as a signal to control the power switch 300 to be turned on or off.

On the basis of the above technical solution, a trigger circuit with a manual trigger button is also provided in the functional module 100, and the trigger circuit provides a signal to the main control chip 101 to cause the main control chip 101 to generate an external interrupt. The signal transmits the card swiping information of the dual-interface smart card chip 102 to the RF-SIM card of the mobile phone or other high-frequency receiving device interaction data through the high-frequency radio frequency chip 103, and the trigger circuit controls the on-off of the power switch 300 according to the signal at the same time. The switching of 300 realizes the power supply or power off of the main control chip 101 and the radio frequency chip power control module 104 .

Like this, the utility model not only can work under the trigger of 13.56Mhz radio frequency signal. It can also be triggered to work at any time the user wishes by pressing a button. The trigger mode can be an interrupt or reset trigger, or it can be triggered by turning on and off the power supply.

The content not described in detail in this specification belongs to the prior art known to those skilled in the art.

Claims (7)

1. A low-power multi-band signal transceiving device, comprising a functional module (100) and a power module (200) for powering it, is characterized in that: between the functional module (100) and the power module (200), a a power switch (300), The functional module (100) is provided with a low-power main control chip (101), a dual-interface smart card chip (102), a high-frequency radio frequency chip (103) and a radio frequency chip power control module (104), The main control chip (101) realizes card swiping by a 13.56MHz card reader and collects card swiping data through a dual-interface smart card chip (102), The main control chip (101) interacts data with the RF-SIM card of the mobile phone or other high-frequency receiving devices through the high-frequency radio frequency chip (103), The main control chip (101) controls the power supply or power-off of the dual-interface smart card chip (102) and the high-frequency radio frequency chip (103) through the radio frequency chip power supply control module (104), A signal detection module (105) for detecting 13.56MHz signals is also provided in the functional module (100), and the signal detection module (105) provides a signal to the main control chip (101) to make the main control chip (101) generate an external interrupt, the main control chip (101) transmits the card swiping information of the dual-interface smart card chip (102) to the RF-SIM card of the mobile phone or other high-frequency receiving device interaction data through the high-frequency radio frequency chip (103) according to the signal, and the signal detection module (105) control the on-off of the power switch (300) according to the signal simultaneously, and realize the power supply or power-off of the main control chip (101) and the radio frequency chip power control module (104) by the on-off of the power switch (300). 2. the multi-band signal transceiver device of low power consumption as claimed in claim 1, is characterized in that: described dual-interface smart card chip (102) is the radio frequency chip of 13.56MHz, and this chip is built-in 13.56MHz antenna, and described high The radio frequency chip (103) is a 2.4GHz radio frequency chip. 3. the multi-band signal transceiving device of low power consumption as claimed in claim 1, is characterized in that: be provided with battery unit (202) and be used for managing the power management module (202) of battery unit (202) in power module 201). 4. The low power consumption multi-band signal transceiving device according to claim 1, characterized in that: the signal detection module (105) is an AC-to-DC circuit or chip. 5. The low power consumption multi-band signal transceiving device according to claim 1, characterized in that: the signal detection module (105) is a half-wave or full-wave rectification circuit converting AC to DC. 6. The multi-band signal transceiving device of low power consumption as claimed in claim 1, wherein the signal detection module (105) comprises: Diode, the anode of the diode is connected to one end of the 13.56MHz antenna, and the other end of the 13.56MHz antenna is grounded, The cathode of the diode is connected to one end of the resistor, the other end of the resistor is connected to one end of the capacitor, and the other end of the capacitor is grounded. 7. The multi-band signal transceiving device of low power consumption as claimed in claim 1, is characterized in that: a trigger circuit with a manual trigger button is also provided in the functional module (100), and the trigger circuit sends to the main control chip (101 ) provides a signal to make the main control chip (101) generate an external interrupt, and the main control chip (101) passes the card swiping information of the dual-interface smart card chip (102) to the RF-SIM of the mobile phone through the high-frequency radio frequency chip (103) according to the signal The card or other high-frequency receiving devices exchange data, and the trigger circuit controls the on-off of the power switch (300) according to the signal at the same time, and the main control chip (101) and the radio frequency chip power control module (104) ) power on or off.

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