CN201928441U - Radio frequency system with low power consumption - Google Patents

Radio frequency system with low power consumption Download PDF

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Publication number
CN201928441U
CN201928441U CN2010205449654U CN201020544965U CN201928441U CN 201928441 U CN201928441 U CN 201928441U CN 2010205449654 U CN2010205449654 U CN 2010205449654U CN 201020544965 U CN201020544965 U CN 201020544965U CN 201928441 U CN201928441 U CN 201928441U
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China
Prior art keywords
module
low
power consumption
wireless
control chip
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Expired - Lifetime
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CN2010205449654U
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Chinese (zh)
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周福泉
陆建刚
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SHANGHAI E-STAR TECHNOLOGY Co Ltd
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SHANGHAI E-STAR TECHNOLOGY Co Ltd
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    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
    • Y02D30/00—Reducing energy consumption in communication networks
    • Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks

Abstract

The utility model provides a radio frequency system with low power consumption, which relates to the field of communication and comprises a main control chip, a radio frequency module, a wireless wake-up module and a low-frequency antenna, wherein the wireless wake-up module connected with the low-frequency antenna and the radio frequency module is used for receiving wireless signals and transmitting activation wake-up signals according to the wireless signals so as to activate the radio frequency module and the main control chip to work. As both a Zigbee functional module and the main control chip can be in a standby state normally and only the wireless wake-up module is reserved in an intercepting state, the whole radio frequency system can not only be ensured in standby with extremely low power consumption, but also normally work without a non-activation mechanism, and accordingly the power consumption of the system is saved greatly. The radio frequency system in miniaturized design can be integrated into a mobile phone intelligent card and other equipment, is flexible, simple and convenient in use, and can be widely applied to the fields of mobile phone payment, mobile phone network games, wireless positioning, logistics management, harbors and the like.

Description

A kind of radio system of low-power consumption
[technical field]
The utility model relates to the communications field, particularly a kind of radio system that is applied under the power consumption requirement harsh conditions.
[background technology]
The mobile phone card is used both progressively to enter at present and can be realized functions such as traditional conversation, note and online, can realize the smart card epoch that the functions such as intelligent networking, Mobile banking's payment between mobile phone combine simultaneously again.The smart card techniques that carries out intelligent networking and mobile-phone payment function between the mobile phone mainly adopts Zigbee or Wi-Fi technology at present.But when increasing cell-phone function, also be faced with the problem that power consumption increases, for the power supply of smart card mobile phone, but, therefore how make the energy consumption of all working module reduce most important because battery of mobile phone energy supply consumption is limited.
Adopt the Zigbee technology to use as the intelligent network functionality of short distance, small data flow, its biggest advantage is that module work is low in energy consumption, the present mainstream chip of the operating current of Zigbee module many at 10mA between the 30mA.Generally, in running order time of the Zigbee module of mobile phone intelligent card is very short, and in order further to reduce power consumption, the Zigbee module can be in deep sleep state for a long time in most cases, this moment, power consumption was many below 10 μ A, have in addition have only 0.8 μ A.The Zigbee network function power consumption that low power consumption like this can satisfy the smart mobile phone card drops to very low.The problem that the Zigbee module of mobile phone intelligent card is changed and activated just seem particularly important but how solution makes between deep sleep and operating state.
[utility model content]
The technical problems to be solved in the utility model is to provide a kind of radio system of low-power consumption, under normal conditions can low-power consumption standby, but do not influence signal transmitting and receiving speed.
The utility model solves above-mentioned technical problem by such technical scheme:
A kind of radio system of low-power consumption, it comprises main control chip, radio-frequency module, wireless awakening module and low-frequency antenna; Wherein the wireless awakening module is connected with radio-frequency module with low-frequency antenna, is used to receive wireless signal, and sends the activation wake-up signal to activate radio-frequency module and main control chip work according to this wireless signal.
As the further improvement of utility model, the wireless signal that the wireless awakening module receives is that working frequency range is positioned at 125K Hz low frequency signal.
As the further improvement of utility model, wireless awakening module and radio-frequency module adopt time sharing mode.
As the further improvement of utility model, comprise the verification authentication codes in the wireless low frequency signal of the 125KHZ that the wireless awakening module receives.
As the further improvement of utility model, low-frequency antenna is the low frequency induction coil antenna, and thickness is 0.3mm, and inductance value is between 400-1600 μ H.
As the further improvement of utility model, it is to encapsulate in 25mm * 15mm * 0.8mm smart card that radio system can be integrated into size.
As the further improvement of utility model, described system further comprises the interface of communicating by letter between SIM card control chip, radio system and the external communication device, be used to realize the state exchange module to the state exchange between communication function and the radio communication function; Main control chip is connected with interface with the state exchange module respectively, and the direct connecting interface of state exchange module may command SIM card control chip perhaps disconnects being connected of SIM card control chip and interface, makes main control chip control SIM card control chip.
As the further improvement of utility model, it is the Zigbee chip of 2.4GHZ that radio-frequency module can adopt working frequency range.
Compared with prior art, the utlity model has following advantage:
1, owing to Zigbee functional module and main control chip all can be in holding state under normal conditions, only reserve the wireless awakening module and be in the state of intercepting, therefore both can guarantee that whole radio system was in standby under the extremely low power consumption state, can guarantee simultaneously radio system energy operate as normal again, and activation mechanism can not occur not having, thereby save system power dissipation greatly;
2, the utility model radio system adopts miniaturization Design, can be integrated in mobile phone intelligent card and other equipment, uses flexible and convenient, can be widely used in the fields such as mobile-phone payment, mobile phone network game, wireless location, logistics management, harbour.
[description of drawings]
Fig. 1 is the basic structure schematic diagram of the radio system of the low-power consumption that provides of the utility model.
Fig. 2 is the schematic circuit of wireless awakening module and Zigbee functional module in the utility model.
Fig. 3 is the radio system workflow diagram of the utility model low-power consumption.
[embodiment]
Describe embodiment of the present utility model in detail below in conjunction with accompanying drawing.
See also Fig. 1, the utility model provides a kind of radio system of low-power consumption, comprises SIM (Subscriber Identity Module) card control chip 10, state exchange module 12, main control chip 13, Zigbee functional module 14, wireless awakening module 15, interface 16, low-frequency antenna 17 and high frequency antenna 18.
SIM card control chip 10 is connected to interface 16 by state exchange module 12.Main control chip 13 state of a control modular converters 12, and pass through state exchange module 12 and communicate by letter with SIM card control chip 10, and communicate to connect with interface 16 simultaneously.Zigbee functional module 14 is connected with main control chip 13, is subjected to main control chip 13 controls, and is connected with the high frequency antenna 18 of 2.4GHZ simultaneously.Wireless awakening module 15 is connected with Zigbee functional module 14, and is connected with low-frequency antenna 17 simultaneously.
Interface 16 is the communication interfaces between radio system and the external communication device (for example mobile phone), and it can select the ISO7816 interface for use.Main control chip 13 is used to intercept external communication function and Zigbee communication function, and according to intercepted result state of a control modular converter 12 state exchanges.
State exchange module 12 is used to realize the state exchange between communication function and the Zigbee communication function, and it has two kinds of operating states, is in state for the moment, and may command SIM card control chip 10 directly carries out data communication by interface 16 and external communication device; During the state two of being in, can disconnect being connected of SIM card control chip 10 and interface 16, make main control chip 13 control SIM card control chips 10.
SIM card control chip 10 is connected with state exchange module 12, is used for by the data communication function between interface 16 realizations and the external communication device.
Wireless awakening module 15 can receive the wireless signal from external transmitter, and this wireless signal handled and judge, judge whether this wireless signal is the wake-up signal that meets the 125khz of communicating requirement, the wake-up signal that only meets the 125khz of communicating requirement, wireless awakening module 15 just can send to Zigbee functional module 14 and activate wake-up signal.In the present embodiment, meet in the wake-up signal of 125khz of communicating requirement and comprised checking verification authentication codes,, effectively reduced the misoperation of wireless awakening module 15 by checking verification authentication codes.In addition, but wireless awakening module 15 recording operation number of times.
Wireless awakening module 15 sends and activates wake-up signal employing ASK modulation, and communication protocol adopts graceful Chester coding, and data format comprises carrier wave, preamble, form, data, five parts of verification.
The working frequency range of Zigbee functional module 14 is 2.4GHz in the utility model, and communication protocol is the Zigbee procotol of compatible IEEE 802.15.4.For avoiding the low-and high-frequency signal cross-talk, wireless awakening module 15 adopts time sharing mode with Zigbee functional module 14, after wireless awakening module 15 activates 14 work of Zigbee functional module, Zigbee functional module 14 is closed 15 work of wireless awakening module, behind Zigbee functional module 14 end-of-jobs, activate 15 work of wireless awakening module more again.
In actual use, the signal that the structure of radio system inside is arranged to be needed to consider 17 pairs of high frequency antennas 18 of low-frequency antenna disturbs, promptly, low-frequency antenna 17 is as far as possible away from high frequency antenna 18, when high frequency antenna 18 designs, should calculate and take into account the decay and the hindrance function of 17 pairs of high-frequency signals of low-frequency antenna simultaneously.
Low-frequency antenna 17 adopts the low frequency induction coil, if utility model is encapsulated in the smart card, then low-frequency antenna 17 can adopt at the multi-thread circle winding method of the tow sides of smart card, improves the winding number of turns of low-frequency antenna 17, thereby improves antenna sensitivity and miniaturization; In addition, low-frequency antenna 17 can directly apply on pcb board, and thickness is 0.3mm, and inductance value is between 400-1600 μ H.
See also Fig. 2, be the schematic circuit of wireless awakening module 15 with Zigbee functional module 14.Wherein wireless awakening module 15 comprises reseting data end CL_DAT, WAKE and three data ports of DIO, and the Zigbee functional module also comprises two I/O and three data terminals of WAKE_UP.Wherein, the reseting data end CL_DAT of wireless awakening module 15 links to each other with the I/O port of Zigbee functional module 14, and Zigbee functional module 14 can be controlled the operating state of wireless awakening module 15; The WAKE end links to each other with the WAKE_UP end of Zigbee functional module 14, is used to wake up Zigbee functional module 14; The DIO FPDP of wireless awakening module 15 links to each other with the I/O port of Zigbee functional module 14, is used for the data communication with Zigbee functional module 14; Zigbee functional module 14 links to each other with main control chip 13.After at first wireless awakening module 15 activates 14 work of Zigbee functional module, activate main control chip 13 again and start working.
See also Fig. 3, the concrete workflow of described radio system is as follows:
Step 101, Zigbee functional module 14 at first activate wireless awakening module 15 and are in the state of intercepting, and intercept the wireless signal from transmitter terminal;
Step 102, wireless awakening module 15 are in the state of intercepting, and at this moment, Zigbee functional module 14 and main control chip 13 all are in holding state;
Step 103, wireless awakening module 15 are in when intercepting state, and after whether real-time judge received wireless signal from transmitter, if receive, then execution in step 104, if confiscate, just return step 102 and continue to intercept;
Step 104, wireless awakening module 15 at first carry out judging whether this signal is wake-up signal behind the demodulation sign indicating number to this signal; If, then execution in step 105, if not, then execution in step 102, continue to intercept;
Step 105, wireless awakening module 15 are sent the activation wake-up signal to Zigbee functional module 14, link to each other with the WAKE_UP end of Zigbee functional module 14 by its WAKE end, wake Zigbee functional module 14 up;
Step 106, Zigbee functional module 14 are started working after receiving and activating wake-up signal, judge at first whether the activation wake-up signal is correct, promptly whether has the request of Zigbee function operation really, if exist really, then execution in step 107, and if there is no, then execution in step 110;
Step 107, Zigbee functional module 14 activation main control chips 13 are started working and are stopped 15 work of wireless awakening module;
Step 108, Zigbee functional module 14 and main control chip 13 are finished Zigbee function associative operation, for example bankcard consumption, on-line payment etc.;
Step 109, stop the Zigbee function associative operation of Zigbee functional module 14 and main control chip;
Step 110, stop Zigbee functional module 14 work;
Step 111, record wireless awakening module 15 number of operations if there is not the request of Zigbee function operation in judgement from step 106, then write down the faulty operation number of times one time; If from step 109, finished Zigbee function associative operation, then write down once correct number of operations;
Step 112, the Zigbee functional module 14 wireless awakening module 15 that resets continues to return the next duty cycle of step 101 beginning.
The radio system that the utility model provides can be used for the smart mobile phone card or other require in the harsh equipment power consumption, Zigbee functional module 14 and main control chip 13 all are in holding state under normal conditions, have only wireless awakening module 15 to be in the state of intercepting, activate wireless awakening module 15 by intercepting signal, thereby activate Zigbee functional module 14 and main control chip 13.Owing to be in the low-power consumption standby state under the described radio system normality.Wireless awakening module 15 intercept state the time power consumption in 2 μ A, response sensitivity is at 100 μ VRMS, 0-350ms is adjustable as required to send to the activation wake-up signal output time of Zigbee functional module 14.
In specific embodiment of the utility model, the operating distance of radio system is between 0.2m to 0.5m, and described operating distance can increase transmitter terminal power as required and improve; And radio system of the present utility model adopts miniaturized design, and can be integrated into size is to encapsulate in 25mm * 15mm * 0.8mm smart card.
The above only is a better embodiment of the present utility model; protection range of the present utility model does not exceed with above-mentioned execution mode; as long as the equivalence that those of ordinary skills do according to the utility model institute disclosure is modified or changed, all should include in the protection range of putting down in writing in claims.

Claims (8)

1. the radio system of a low-power consumption is characterized in that, comprises main control chip, radio-frequency module, wireless awakening module and low-frequency antenna; Wherein the wireless awakening module is connected with radio-frequency module with low-frequency antenna, is used to receive wireless signal, and sends the activation wake-up signal to activate radio-frequency module and main control chip work according to this wireless signal.
2. the radio system of low-power consumption according to claim 1 is characterized in that: the wireless signal that the wireless awakening module receives is the wireless low frequency signal that working frequency range is positioned at 125KHz.
3. the radio system of low-power consumption according to claim 1 and 2 is characterized in that: wireless awakening module and radio-frequency module employing time sharing mode.
4. the radio system of low-power consumption according to claim 2 is characterized in that: comprise the verification authentication codes in the wireless low frequency signal of the 125KHZ that the wireless awakening module receives.
5. the radio system of low-power consumption according to claim 1, it is characterized in that: low-frequency antenna is the low frequency induction coil antenna, and thickness is 0.3mm, and inductance value is between 400-1600 μ H.
6. the radio system of low-power consumption according to claim 1, it is characterized in that: it is to encapsulate in 25mm * 15mm * 0.8mm smart card that radio system can be integrated into size.
7. the radio system of low-power consumption according to claim 1 is characterized in that: described system further comprises the interface of communicating by letter between SIM card control chip, radio system and the external communication device, be used to realize the state exchange module to the state exchange between communication function and the radio communication function; Main control chip is connected with interface with the state exchange module respectively, and state exchange module may command direct connecting interface of SIM card control chip or disconnection SIM card control chip are connected with interface, makes main control chip control SIM card control chip.
8. according to the radio system of each described low-power consumption of claim 1 to 7, it is characterized in that: it is the Zigbee chip of 2.4GHZ that radio-frequency module can adopt working frequency range.
CN2010205449654U 2010-09-28 2010-09-28 Radio frequency system with low power consumption Expired - Lifetime CN201928441U (en)

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Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103167591A (en) * 2011-12-14 2013-06-19 国民技术股份有限公司 Radio frequency mobile communication card and consumption management method thereof
CN103839414A (en) * 2014-03-21 2014-06-04 苏州富欣智能交通控制有限公司 Vehicle recognizing device
CN106470045A (en) * 2015-08-19 2017-03-01 王战洪 A kind of portable radio communication device of use public frequency band
CN106488460A (en) * 2015-08-28 2017-03-08 苏州恩泽迅扬节能科技有限公司 Wireless communications method and its corresponding main equipment, from equipment and wireless communication system
CN106558117A (en) * 2016-09-29 2017-04-05 深圳成谷科技有限公司 Curb parking charging method and system
DE102015224831A1 (en) 2015-12-10 2017-06-14 Robert Bosch Gmbh Radio-activated device
CN109526044A (en) * 2018-11-24 2019-03-26 上海沪工焊接集团股份有限公司 A kind of wireless communication method of the source of welding current

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103167591A (en) * 2011-12-14 2013-06-19 国民技术股份有限公司 Radio frequency mobile communication card and consumption management method thereof
CN103839414A (en) * 2014-03-21 2014-06-04 苏州富欣智能交通控制有限公司 Vehicle recognizing device
CN106470045A (en) * 2015-08-19 2017-03-01 王战洪 A kind of portable radio communication device of use public frequency band
CN106488460A (en) * 2015-08-28 2017-03-08 苏州恩泽迅扬节能科技有限公司 Wireless communications method and its corresponding main equipment, from equipment and wireless communication system
DE102015224831A1 (en) 2015-12-10 2017-06-14 Robert Bosch Gmbh Radio-activated device
CN106558117A (en) * 2016-09-29 2017-04-05 深圳成谷科技有限公司 Curb parking charging method and system
CN109526044A (en) * 2018-11-24 2019-03-26 上海沪工焊接集团股份有限公司 A kind of wireless communication method of the source of welding current

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Granted publication date: 20110810