CN211831176U - Near-field radio frequency energy and data cooperative transmission system - Google Patents
Near-field radio frequency energy and data cooperative transmission system Download PDFInfo
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- CN211831176U CN211831176U CN202022162891.4U CN202022162891U CN211831176U CN 211831176 U CN211831176 U CN 211831176U CN 202022162891 U CN202022162891 U CN 202022162891U CN 211831176 U CN211831176 U CN 211831176U
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Abstract
The utility model discloses a near field radio frequency energy and cooperative transmission system of data, include: the device comprises a signal matching module, an energy collecting module and a main control module; the input end of the signal matching module receives a Bluetooth signal, the output end of the signal matching module is electrically connected with the energy collecting module, and radio frequency energy generated by the Bluetooth signal is input into the energy collecting module; the power supply output end of the energy collection module is electrically connected with the power supply end of the main control module; the output end of the signal matching module is also in communication connection with the data input end of the main control module, and the Bluetooth signal is input to the main control module. The utility model discloses a bluetooth need not to use special reading ware as data transmission and energy collection's carrier, cost greatly reduced, and the bluetooth prevalence is high, and each mobile device all supports the bluetooth, so, the compatibility improves greatly, and the range of application no longer receives the equipment restriction, has increased the range of application of system.
Description
Technical Field
The utility model relates to a near field wireless energy is collected and data transmission technical field, concretely relates to near field radio frequency energy and cooperative transmission system of data.
Background
With the rapid development of the internet of things, the number of devices, sensors and actuators of the internet of things connected with the internet of things is increased, and although the power of a single node of the internet of things is low and does not need to be continuously operated (started only when needed), the total power consumption is still high due to the fact that the number of the nodes is large. Therefore, a power supply mode by energy collection is provided, so that the node gets rid of the limitation of an external power supply (battery), and the problems of high cost and frequent battery replacement caused by overhigh power consumption are solved.
At present, the most reliable wireless energy collection mode is near-field wireless energy collection, which can realize energy collection and data transmission and has very wide application field; the most common embodiments are mainly based on RFID (radio frequency Identification) and NFC (Near Field Communication); the RFID system is generally in a tag form, consists of a reader and a tag, activates a node main circuit in a near field by actively transmitting radio frequency energy, and returns node information to a radio frequency transmitter in a backscattering mode; the NFC system integrates a non-contact card reader, a non-contact card and a point-to-point function into a single chip, and the function of cooperative propagation of near field energy and data is achieved.
However, the above solution has the following disadvantages: (1) for the RFID system, a special reader is required to be used for communicating with the tag, so that the cost is high, and the application range is greatly limited; (2) the compatibility of NFC devices is a problem that is not currently solved, and for many mobile devices, the NFC function is not standard, so that the application range is also greatly limited. Therefore, how to provide a near-field rf energy collection and data transmission system with a wide application range becomes an urgent problem to be solved.
SUMMERY OF THE UTILITY MODEL
In order to solve the problem that the existing near field energy collection needs a special reader and is not high in cost and large in application range limitation caused by high compatibility, the utility model aims to provide a cooperative transmission system of near field radio frequency energy and data, which uses Bluetooth signals as data and energy transmission carriers and is low in cost and high in compatibility.
The utility model discloses the technical scheme who adopts does:
the utility model provides a transmission system in coordination of nearly radio frequency field energy and data, include: the device comprises a signal matching module, an energy collecting module and a main control module;
the input end of the signal matching module receives a Bluetooth signal, the output end of the signal matching module is electrically connected with the energy collecting module, and radio frequency energy generated by the Bluetooth signal is input into the energy collecting module;
the power supply output end of the energy collection module is electrically connected with the power supply end of the main control module;
the output end of the signal matching module is also in communication connection with the data input end of the main control module, and the Bluetooth signal is input to the main control module.
Based on the above disclosure, the present invention uses bluetooth as a carrier for data transmission and energy collection, i.e. the signal matching module receives bluetooth signals, on one hand, the radio frequency energy generated by bluetooth signals is transmitted to the energy collection module, and is converted into electric energy by the energy collection module, so as to supply power to the main control module, further realize the collection of near-field energy, and get rid of the limitation of external power; on the other hand, the Bluetooth signal is input into the main control module to realize the transmission of Bluetooth data, and then the work of the external equipment is controlled through the Bluetooth data.
Through the design, the utility model discloses a bluetooth need not to use special reading ware as the carrier of data transmission and energy collection, cost greatly reduced, and the bluetooth prevalence is high, and each mobile device all supports the bluetooth, so, the compatibility improves greatly, and the range of application no longer receives the equipment restriction, has increased the range of application of system.
In one possible design, the signal matching module includes: the Bluetooth receiving and transmitting antenna and the matching circuit unit are used as the input end of the signal matching module and used for receiving the Bluetooth signal;
the Bluetooth receiving and transmitting antenna is electrically connected with the input end of the matching circuit unit, and the output end of the matching circuit unit is used as the output end of the signal matching module and is electrically connected with the input end of the energy collecting module;
the output end of the matching circuit unit is also in communication connection with the data input end of the main control module.
Based on the above disclosure, the utility model discloses a specific circuit of signal matching module constitutes, bluetooth transceiver antenna is as receiving antenna promptly for receive bluetooth signal, and the matching circuit unit then is used for correcting the impedance of bluetooth transceiver antenna (being about to the impedance of antenna, matches 50 ohms through the matching circuit unit), guarantees bluetooth signal's normal receipt.
In one possible design, the matching circuit unit includes: the first capacitor, the second capacitor, the third capacitor and the first inductor;
one end of the first capacitor is used as the input end of the matching circuit unit and is electrically connected with the Bluetooth transceiving antenna, the other end of the first capacitor is respectively and electrically connected with one end of the second capacitor and one end of the first inductor, the other end of the first inductor is used as the output end of the matching circuit unit, is electrically connected with the input end of the energy collection module, and is in communication connection with the data input end of the main control module;
the other end of the first inductor is also electrically connected with one end of the third capacitor, and the other end of the third capacitor and the other end of the second capacitor are respectively grounded.
Based on the above disclosure, the utility model discloses a specific circuit structure of matching circuit unit, even use first electric capacity, second electric capacity, third electric capacity and first inductance to constitute the matching network of pi type, and then realize the matching adjustment of antenna impedance (no matter what value of the impedance of bluetooth transceiver antenna, all can match the impedance to 50 ohms through the matching circuit unit promptly), guarantee bluetooth signal's normal receipt.
In one possible design, the energy harvesting module includes: a rectifier circuit unit and an energy management circuit unit;
the input end of the rectifying circuit unit is electrically connected with the output end of the signal matching module, the output end of the rectifying circuit unit is electrically connected with the input end of the energy management circuit unit, and the power supply output end of the energy management circuit unit is electrically connected with the power supply end of the main control module.
Based on the above-mentioned disclosure, the utility model discloses a concrete circuit of energy collection module constitutes, and rectifier circuit unit is used for converting the radio frequency power of bluetooth signal into direct current power promptly, realizes the conversion of radio frequency energy to direct current power, and energy management circuit unit then carries out energy management with the direct current power of input, converts the voltage into, for the main control module power supply of rear end.
In one possible design, the rectifier circuit unit includes: a fourth capacitor, a fifth capacitor, a sixth capacitor, a seventh capacitor, a first Schottky diode, a second Schottky diode, a third Schottky diode, and a fourth Schottky diode;
one end of the fourth capacitor is used as an input end of the rectifier circuit unit and is respectively and electrically connected with an output end of the signal matching module and one end of the sixth capacitor, the other end of the fourth capacitor is respectively and electrically connected with an anode of the first Schottky diode and a cathode of the second Schottky diode, a cathode of the first Schottky diode is respectively and electrically connected with one end of the fifth capacitor and an anode of the third Schottky diode, and a cathode of the third Schottky diode is respectively and electrically connected with the other end of the sixth capacitor and an anode of the fourth Schottky diode;
the negative electrode of the fourth Schottky diode is used as the output end of the rectifying circuit unit and is electrically connected with the input end of the energy management circuit unit;
the cathode of the fourth Schottky diode is also electrically connected with one end of the seventh capacitor, and the other end of the seventh capacitor, the other end of the fifth capacitor and the anode of the second Schottky diode are respectively grounded.
Based on the above disclosure, the utility model discloses a concrete circuit structure of rectifier circuit unit, electric capacity C4 ~ C7 promptly, schottky diode D2 ~ D5 have constituteed a set of rectifier, convert the radio frequency power of bluetooth signal into direct current power to the follow-up conversion that carries out voltage.
In one possible design, the energy management circuit unit adopts an AEM30940 type energy management chip and peripheral circuits thereof.
Based on the above disclosure, the present invention discloses a specific chip model for use in an energy management circuit. Of course, the above disclosed chip is only one of the chips for implementing the energy management circuit.
In one possible design, the energy management circuit unit is further electrically connected with a super capacitor for storing the electric energy converted by the energy management circuit unit.
Based on the above disclosure, by providing the super capacitor, the electric energy converted from the near-field radio frequency energy can be stored, and the super capacitor can be used as a battery to supply power to the load.
In one possible design, the energy collection system further comprises a power supply conditioning module, wherein an input end of the power supply conditioning module is electrically connected with a power supply output end of the energy collection module, and an output end of the power supply conditioning module is electrically connected with a power supply end of the main control module.
In one possible design, the power conditioning module employs a filter circuit unit.
Based on the above disclosure, the present invention can filter the voltage output by the energy collecting module by providing the filter circuit unit, remove the ripple in the voltage, obtain a more ideal dc voltage, and ensure the stable power supply of the main control module.
In one possible design, the main control module adopts a CC2640R2F type processing chip and peripheral circuits thereof.
Based on the above disclosure, the utility model discloses a specific chip model that master control module used. Of course, the chip disclosed above is only one of the chips used by the main control module.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural diagram of a cooperative transmission system of near-field rf energy and data provided by the present invention.
Fig. 2 is a specific connection circuit diagram of the bluetooth transceiving antenna, the matching circuit unit and the rectification circuit unit provided by the present invention.
Fig. 3 is a specific circuit diagram of an AEM30940 type energy management chip provided by the present invention.
Fig. 4 is a specific circuit diagram of the filter circuit unit provided by the present invention.
Fig. 5 is a specific circuit diagram of a second filter circuit unit provided by the present invention.
Fig. 6 is a specific circuit diagram of a CC2640R2F processing chip according to the present invention.
Fig. 7 is an IO pin circuit diagram of a CC2640R2F type processing chip provided by the present invention.
Detailed Description
The invention will be further described with reference to the accompanying drawings and specific embodiments. It should be noted that the description of the embodiments is provided to help understanding of the present invention, but the present invention is not limited thereto. Specific structural and functional details disclosed herein are merely illustrative of example embodiments of the invention. The present invention may, however, be embodied in many alternate forms and should not be construed as limited to the embodiments set forth herein.
It will be understood that, although the terms first, second, etc. may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another. For example, a first element could be termed a second element, and, similarly, a second element could be termed a first element, without departing from the scope of example embodiments of the present invention.
It is to be understood that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments of the invention. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, unless the context clearly indicates otherwise. It will be further understood that the terms "comprises," "comprising," "includes" and/or "including," when used herein, specify the presence of stated features, integers, steps, operations, elements, and/or components, but do not preclude the presence or addition of one or more other features, numbers, steps, operations, elements, components, and/or groups thereof.
Example one
As shown in fig. 1 to 7, the near-field radio frequency energy and data cooperative transmission system provided in this embodiment is applicable to any wireless data transmission field, for example, the field of passive intelligent lock cylinders, the field of shared devices, and the like; when the system is used, Bluetooth communication on the mobile equipment is started, the mobile equipment is close to a Bluetooth receiving and transmitting antenna of the system (for example, the distance between the mobile equipment and the Bluetooth receiving and transmitting antenna is 30 cm), collection of Bluetooth radio frequency energy and data transmission can be achieved, and operation on load equipment is completed through Bluetooth. Compared with traditional RFID and NFC equipment, the system adopts Bluetooth as a data and energy transmission carrier, and has the advantages of high Bluetooth popularization rate, low cost, high compatibility and wider application range.
The cooperative transmission system of near-field rf energy and data provided by this embodiment may include, but is not limited to: the device comprises a signal matching module, an energy collecting module and a main control module.
The input end of the signal matching module receives Bluetooth signals, the output end of the signal matching module is electrically connected with the energy collecting module, and radio frequency energy generated by the Bluetooth signals is input into the energy collecting module.
And the power output end of the energy collection module is electrically connected with the power supply end of the main control module.
The output end of the signal matching module is also in communication connection with the data input end of the main control module, and the Bluetooth signal is input to the main control module.
As shown in fig. 1, in this embodiment, the receiving of the bluetooth signal is mainly realized by the signal matching module, and meanwhile, the radio frequency energy generated by the bluetooth signal is transmitted to the energy collecting module by the signal matching module, so as to realize the collection of the radio frequency energy, convert the radio frequency energy into electric energy, and supply power to the main control module; in addition, the Bluetooth signals are transmitted to the main control module through the signal matching module, the transmission of Bluetooth data is achieved, the Bluetooth data are analyzed through the main control module, and the operation of subsequent load equipment is completed.
In this embodiment, the energy collection module is used as a collection device of the radio frequency energy, which converts the radio frequency energy into electric energy to supply power to the main control module, so that the system is free from the limitation of an external power supply, the cost is reduced, and frequent battery replacement is avoided.
The main control module is used as a processing center of the whole system and is used for receiving the Bluetooth signals, realizing the analysis of data carried in the Bluetooth signals and realizing the functions of operating load equipment through Bluetooth communication.
Through the design, the utility model discloses a bluetooth need not to use special reading ware as the carrier of data transmission and energy collection, cost greatly reduced, and the bluetooth prevalence is high, and each mobile device all supports the bluetooth, so, the compatibility improves greatly, and the range of application no longer receives the equipment restriction, has increased the range of application of system.
Example two
As shown in fig. 2 to 7, the present embodiment provides a specific circuit for implementing the system in the first embodiment.
In this embodiment, the signal matching module includes: a Bluetooth receiving and transmitting antenna and a matching circuit unit. The output end of the matching circuit unit is used as the output end of the signal matching module and is electrically connected with the input end of the energy collecting module; the output end of the matching circuit unit is also in communication connection with the data input end of the main control module.
The data transmission and energy transmission process comprises the following steps: the Bluetooth receiving and transmitting antenna is used as the input end of the signal matching module and receives Bluetooth signals; when a certain Bluetooth transmitting device approaches to a Bluetooth receiving and transmitting antenna of the system, an energy transmission channel and a data transmission channel between the Bluetooth transmitting device and the Bluetooth transmitting device are established through the Bluetooth receiving and transmitting antenna, namely, the energy of a Bluetooth signal is transmitted to the Bluetooth receiving and transmitting antenna in a radio frequency radiation mode; of course, the data transmission is also realized through Bluetooth signals.
After the Bluetooth signal is received by the Bluetooth receiving and transmitting antenna, the Bluetooth signal can be transmitted to the main control module through the matching circuit unit, and the radio frequency energy generated by the Bluetooth signal is transmitted to the energy collecting module.
As shown in fig. 2, a specific circuit configuration of the matching circuit unit is given below.
In this embodiment, the matching circuit unit may include, but is not limited to: a first capacitor C1, a second capacitor C2, a third capacitor C3 and a first inductor L1.
As shown in fig. 2, the connection relationship between the electronic components is as follows:
one end of the first capacitor C1 is used as the input end of the matching circuit unit, and is electrically connected to the bluetooth transceiver antenna (i.e., a1 in fig. 2), the other end of the first capacitor C1 is electrically connected to one end of the second capacitor C2 and one end of the first inductor L1, respectively, the other end of the first inductor L1 is used as the output end of the matching circuit unit, and is electrically connected to the input end of the energy collection module, and is communicatively connected to the data input end of the main control module; the other end of the first inductor L1 is further electrically connected to one end of the third capacitor C3, and the other end of the third capacitor C3 and the other end of the second capacitor C2 are respectively grounded.
In the present embodiment, the matching circuit unit functions as: the first capacitor C1, the second capacitor C2, the third capacitor C3 and the first inductor L1 form a pi-shaped matching network, so that impedance matching adjustment of the Bluetooth transceiving antenna is achieved (namely no matter what value the impedance of the Bluetooth transceiving antenna is, the impedance can be matched to 50 ohms through the matching circuit unit), normal receiving of Bluetooth signals is guaranteed, and then collection of radio frequency energy and receiving of Bluetooth data are achieved.
In this embodiment, the bluetooth transceiving antenna is a microstrip antenna matched with 2.4GHz to 2.485GHz, for example.
After receiving the Bluetooth signal, the energy collection module can collect the radio frequency energy generated by the Bluetooth signal, and the radio frequency energy is converted into electric energy to supply power for the main control module.
In this embodiment, the exemplary energy harvesting module may include, but is not limited to: a rectifier circuit unit and an energy management circuit unit; the input end of the rectifying circuit unit is electrically connected with the output end of the signal matching module, the output end of the rectifying circuit unit is electrically connected with the input end of the energy management circuit unit, and the power supply output end of the energy management circuit unit is electrically connected with the power supply end of the main control module.
In this embodiment, the rectifier circuit unit is configured to convert the radio frequency power of the bluetooth signal into a direct current power, so as to realize conversion from radio frequency energy to the direct current power, and the energy management circuit unit performs energy management on the input direct current power, converts the direct current power into a voltage, and supplies power to the main control module at the rear end.
As shown in fig. 2, a specific circuit composition structure of the rectifier circuit unit is given below.
In the present embodiment, the exemplary rectification circuit unit may include, but is not limited to: a fourth capacitor C4, a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, a first schottky diode D2, a second schottky diode D3, a third schottky diode D4, and a fourth schottky diode D5.
As shown in fig. 2, the connection relationship between the electrical components is as follows:
one end of a fourth capacitor C4 is used as an input end of the rectifier circuit unit, and is electrically connected to an output end of the signal matching module (i.e., electrically connected to the other end of the first inductor L1) and one end of a sixth capacitor C6, respectively, the other end of the fourth capacitor C4 is electrically connected to an anode of the first schottky diode D2 and a cathode of the second schottky diode D3, respectively, a cathode of the first schottky diode D2 is electrically connected to one end of the fifth capacitor C5 and an anode of the third schottky diode D4, respectively, and a cathode of the third schottky diode D4 is electrically connected to the other end of the sixth capacitor C6 and an anode of the fourth schottky diode D5, respectively; the negative electrode of the fourth Schottky diode D5 is used as the output end of the rectifying circuit unit and is electrically connected with the input end of the energy management circuit unit; the cathode of the fourth schottky diode D5 is electrically connected to one end of the seventh capacitor C7, and the other end of the seventh capacitor C7, the other end of the fifth capacitor C5, and the anode of the second schottky diode D3 are grounded, respectively.
In the present embodiment, the principle of the rectifier circuit is: the capacitors C4-C7 and the Schottky diodes D2-D5 form a group of rectifiers, and radio frequency power of Bluetooth signals is converted into direct current power, so that the direct current power is conveniently input into the energy management circuit unit to complete conversion of electric energy.
As shown in fig. 3, in the present embodiment, the AEM30940 type energy management chip and its peripheral circuits are used as the energy management circuit unit. As can be seen from fig. 3 and 2, the output terminal of the rectifier circuit unit (i.e., the negative electrode of the fourth schottky diode D5) is electrically connected to the SRC pin of the AEM30940 energy management chip, so as to input dc power.
The AEM30940 type energy management chip achieves the purpose of efficiently managing weak energy by configuring Boost and Buck peripheral inductors and resistors, and outputs load voltage HV _ OUT (3.3V) to supply power to the main control module through an internal linear voltage regulator.
An operating mode of the AEM30940 type energy management chip is given below, that is, when the input dc power is greater than 3 μ W, the Boost and Buck circuits (i.e., the circuits connected to pins 2, 3 and 28 and 27 in fig. 3) of the energy management chip start to operate, perform voltage conversion, and implement power supply for the main control module.
Through the design, the utility model discloses can collect the radio frequency energy that bluetooth signal produced, realize the conversion of radio frequency energy and electric energy to for the host system power supply, can make the system break away from the restriction of outside power.
In this embodiment, in order to supply power to an external load connected to the system, a super capacitor is further electrically connected to the energy management circuit unit, and is used for storing the electric energy converted by the energy management circuit unit.
As shown in fig. 3, a capacitor CSUP is electrically connected between the 16 th pin and the 17 th pin of the AEM30940 type energy management chip, and the capacitor is a super capacitor, and when the input dc power is greater than 3 μ W, the Boost and Buck circuits of the energy management chip start to work, and simultaneously connect a linear regulator inside the chip to output electric energy to the super capacitor, so as to store energy for the super capacitor, and further supply power to the load through the super capacitor.
Through the design, the load connected with the system can get rid of the limitation of an external power supply, the use convenience is improved, and the use cost is reduced.
In the present embodiment, as shown in fig. 6 and fig. 7, the main control module may adopt, but is not limited to, a CC2640R2F type processing chip and its peripheral circuits.
That is, in the present embodiment, it is equivalent to use the AEM30940 type energy management chip to supply power to the main control module. Because the voltage output by the AEM30940 type energy management chip is not pure direct current, and the voltage waveform contains a large ripple component (i.e., ripple), in order to obtain a relatively ideal direct current voltage, in this embodiment, a power conditioning module is further provided for filtering the voltage, so as to obtain an ideal direct current voltage, and ensure stable power supply to the main control module.
In this embodiment, the power conditioning module can be, but is not limited to, the following: a filter circuit unit.
As shown in fig. 4, one specific circuit configuration of the filter circuit unit is given below.
In this embodiment, the exemplary filter circuit unit may include, but is not limited to: an inductor L3, a resistor DNP, a capacitor C15, a capacitor C16 and a capacitor C17, the connection mode between the above electronic components can be seen in fig. 4, that is, one end of the inductor L3 is used as an input end of the filter circuit unit and is electrically connected to the 14 th pin of the AEM30940 type energy management chip, and the other end of the inductor L3 is electrically connected to one ends of the resistor DNP, the capacitor C15, the capacitor C16 and the capacitor C17 respectively and is used as an output end of the filter circuit unit and is electrically connected to the 13 th, 22 th, 44 th and 34 th pins of the CC2640R2F type processing chip, so as to supply power to the chip.
In this embodiment, the CC2640R2F type processing chip supports Bluetooth 5.0, which incorporates a 2.4GHz radio frequency transceiver, 128KB system programmable memory, 20KB SRAM and rich peripherals. The embedded type radio network controller comprises an ARM Cortex-M3 series processor for processing application programs and a BLE (Bluetooth Low Energy, Bluetooth) protocol stack, and an ARM Cortex-M0 processor for processing all the bottom radio controls and related physical layers and partial link layers. The sensor controller can be independent of Cortex-M3 insulated against the burners for autonomous data acquisition and control, thereby providing additional flexibility and further improving the low power consumption capability of the CC2640R 2F.
Therefore, the CC2640R2F processing chip can receive bluetooth data, process the transmitted bluetooth control command from the bluetooth transmitting device, and perform bluetooth control on the load.
In this embodiment, since the CC2640R2F processing chip integrates the rf transceiver, it needs to separately supply power to the rf transceiver, so that the voltage output by the filter circuit unit is output to the pin DCDC _ SW through the linear regulator inside the chip, and the power supply to the internal rf transceiver is realized through the external second filter circuit unit.
In this embodiment, a specific circuit structure of the second filter circuit unit is shown in fig. 5, which is consistent with a structure and a principle of the filter circuit unit, and details are not repeated herein, it can be known from fig. 5 and fig. 6 that one end of the inductor L4 is electrically connected to the DCDC _ SW pin of the CC2640R2F type processing chip, and the other end of the inductor L4 is used as an output end of the second filter circuit unit (certainly, the inductor L is electrically connected to a resistor and a capacitor to implement a filtering function, which can be seen in fig. 5), and is electrically connected to the 45 th pin and the 48 th pin of the CC2640R2F type processing chip to implement power supply to the rf transceiver inside the chip.
Through the circuits provided above, the present embodiment can implement the radio frequency energy collection and data transmission functions of the system in the first embodiment.
The utility model discloses a theory of operation does:
when a certain Bluetooth transmitting device approaches to a Bluetooth transmitting and receiving antenna of the system, an energy transmission channel and a data transmission channel between the Bluetooth transmitting device and the Bluetooth transmitting device are established through the Bluetooth transmitting and receiving antenna, the radio frequency energy of a Bluetooth signal is transmitted to the Bluetooth transmitting and receiving antenna in a radio frequency radiation mode, the energy is input into a rectifying circuit unit through a matching circuit unit, the radio frequency power is converted into direct current power and input into an AEM30940 type energy management chip, after the conversion of the electric energy is completed, the CC2640R2F type processing chip is powered through the AEM30940 type energy management chip, and meanwhile, the electric energy is stored in a super capacitor to power a load; in addition, the matching circuit unit also transmits the Bluetooth data to a CC2640R2F type processing chip, so as to realize the processing of the Bluetooth command and complete the Bluetooth control of the load.
To sum up, the utility model provides a near field radio frequency energy and cooperative transmission system of data has following technological effect:
(1) the utility model discloses a bluetooth need not to use special reading ware as data transmission and energy collection's carrier, cost greatly reduced, and the bluetooth prevalence is high, and each mobile device all supports the bluetooth, so, the compatibility improves greatly, and the range of application no longer receives the equipment restriction, has increased the range of application of system.
The present invention is not limited to the above-mentioned optional embodiments, and any other products in various forms can be obtained by anyone under the teaching of the present invention, and any changes in the shape or structure thereof, all the technical solutions falling within the scope of the present invention, are within the protection scope of the present invention.
Claims (10)
1. A system for cooperative transmission of near field radio frequency energy and data, comprising: the device comprises a signal matching module, an energy collecting module and a main control module;
the input end of the signal matching module receives a Bluetooth signal, the output end of the signal matching module is electrically connected with the energy collecting module, and radio frequency energy generated by the Bluetooth signal is input into the energy collecting module;
the power supply output end of the energy collection module is electrically connected with the power supply end of the main control module;
the output end of the signal matching module is also in communication connection with the data input end of the main control module, and the Bluetooth signal is input to the main control module.
2. The cooperative near field rf energy and data transmission system of claim 1, wherein the signal matching module comprises: the Bluetooth receiving and transmitting antenna and the matching circuit unit are used as the input end of the signal matching module and used for receiving the Bluetooth signal;
the Bluetooth receiving and transmitting antenna is electrically connected with the input end of the matching circuit unit, and the output end of the matching circuit unit is used as the output end of the signal matching module and is electrically connected with the input end of the energy collecting module;
the output end of the matching circuit unit is also in communication connection with the data input end of the main control module.
3. The cooperative near field rf energy and data transmission system of claim 2, wherein said matching circuit unit comprises: a first capacitor (C1), a second capacitor (C2), a third capacitor (C3) and a first inductor (L1);
one end of the first capacitor (C1) is used as the input end of the matching circuit unit and is electrically connected with the Bluetooth transceiving antenna, the other end of the first capacitor (C1) is respectively and electrically connected with one end of the second capacitor (C2) and one end of the first inductor (L1), the other end of the first inductor (L1) is used as the output end of the matching circuit unit and is electrically connected with the input end of the energy collection module, and the other end of the first inductor is in communication connection with the data input end of the main control module;
the other end of the first inductor (L1) is also electrically connected with one end of the third capacitor (C3), and the other end of the third capacitor (C3) and the other end of the second capacitor (C2) are respectively grounded.
4. The cooperative transmission system of near field rf energy and data of claim 1, wherein said energy harvesting module comprises: a rectifier circuit unit and an energy management circuit unit;
the input end of the rectifying circuit unit is electrically connected with the output end of the signal matching module, the output end of the rectifying circuit unit is electrically connected with the input end of the energy management circuit unit, and the power supply output end of the energy management circuit unit is electrically connected with the power supply end of the main control module.
5. The cooperative near field rf energy and data transmission system of claim 4, wherein said rectifier circuit unit comprises: a fourth capacitor (C4), a fifth capacitor (C5), a sixth capacitor (C6), a seventh capacitor (C7), a first schottky diode (D2), a second schottky diode (D3), a third schottky diode (D4), and a fourth schottky diode (D5);
one end of the fourth capacitor (C4) is used as an input end of the rectifier circuit unit, and is electrically connected to an output end of the signal matching module and one end of the sixth capacitor (C6), the other end of the fourth capacitor (C4) is electrically connected to an anode of the first schottky diode (D2) and a cathode of the second schottky diode (D3), a cathode of the first schottky diode (D2) is electrically connected to one end of the fifth capacitor (C5) and an anode of the third schottky diode (D4), and a cathode of the third schottky diode (D4) is electrically connected to the other end of the sixth capacitor (C6) and an anode of the fourth schottky diode (D5);
the negative electrode of the fourth Schottky diode (D5) is used as the output end of the rectifying circuit unit and is electrically connected with the input end of the energy management circuit unit;
the cathode of the fourth Schottky diode (D5) is also electrically connected with one end of the seventh capacitor (C7), and the other end of the seventh capacitor (C7), the other end of the fifth capacitor (C5) and the anode of the second Schottky diode (D3) are respectively grounded.
6. The near-field radio frequency energy and data cooperative transmission system according to claim 4, wherein the energy management circuit unit adopts an AEM30940 type energy management chip and peripheral circuits thereof.
7. The near-field radio frequency energy and data cooperative transmission system according to claim 4, wherein the energy management circuit unit is further electrically connected with a super capacitor for storing the electric energy converted by the energy management circuit unit.
8. The cooperative near-field radio frequency energy and data transmission system of claim 1, further comprising a power conditioning module, wherein an input terminal of the power conditioning module is electrically connected to a power output terminal of the energy collection module, and an output terminal of the power conditioning module is electrically connected to a power supply terminal of the main control module.
9. The cooperative near field rf energy and data transmission system of claim 8, wherein: the power supply conditioning module adopts a filter circuit unit.
10. The cooperative transmission system of near field rf energy and data as claimed in claim 1, wherein the main control module employs a CC2640R2F type processing chip and its peripheral circuits.
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113676224A (en) * | 2021-08-20 | 2021-11-19 | 深圳绅聚科技有限公司 | Bluetooth module, system and article of manufacture powered by radio frequency energy |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113676224A (en) * | 2021-08-20 | 2021-11-19 | 深圳绅聚科技有限公司 | Bluetooth module, system and article of manufacture powered by radio frequency energy |
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