CN212379848U - Card reader - Google Patents
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- CN212379848U CN212379848U CN202020594096.XU CN202020594096U CN212379848U CN 212379848 U CN212379848 U CN 212379848U CN 202020594096 U CN202020594096 U CN 202020594096U CN 212379848 U CN212379848 U CN 212379848U
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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
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Abstract
The utility model discloses a card reader, include: the NFC module is used for detecting NFC electronic tag signals every other first preset time, converting the detected NFC electronic tag signals into electronic tag data, generating a wake-up signal after the NFC electronic tag signals are detected, and sending the electronic tag data and the wake-up signal; the control module is used for sequencing the electronic tag data based on the wake-up signal; and the LoRa module is used for sequentially sending the electronic tag data to an external server according to the sequence. The utility model discloses an adopt loRa's remote wireless communication technique of low-power consumption and NFC near field communication to combine, make the NFC card reader can the easy to assemble deployment, prolong battery power supply time when realizing wireless transmission to realize the target of data long distance transmission.
Description
Technical Field
The utility model relates to an electronic equipment technical field especially relates to a card reader, especially a card reader based on loRa technique and NFC technique.
Background
At present, nfc (near Field communication) is increasingly popularized in our daily life, and card readers on the market are of the following types: the card reader based on USB and NFC, the card reader based on serial ports and NFC, the card reader based on wifi and NFC and the card reader based on Bluetooth and NFC. The card reader based on the USB and the serial port has the advantages that a client needs to read data of the electronic tag through a data line, power is supplied to the card reader through a power line, the equipment installation wiring technology is complex, and the cost is high; the card reader equipment based on the wifi solves the problem that data needs to be read through a data line, but the wifi equipment is high in power consumption and still needs a power line for power supply; wireless data transmission has also been realized to card reader equipment based on bluetooth, and simultaneously, the electric quantity consumption of bluetooth is little, can adopt battery powered, but the bluetooth is gathered and is sent apart from the weak point behind the NFC data, and wireless distance is only about 10 meters.
SUMMERY OF THE UTILITY MODEL
Objects of the invention
The utility model aims at providing a satisfy the card reader of battery duration strong, the longer these three targets of wireless transmission data and transmission distance simultaneously.
(II) technical scheme
In order to solve the above problem, an embodiment of the present invention provides a card reader, including: the NFC module is used for detecting NFC electronic tag signals every other first preset time, converting the detected NFC electronic tag signals into electronic tag data, generating a wake-up signal after the NFC electronic tag signals are detected, and sending the electronic tag data and the wake-up signal; the control module is used for sequencing the electronic tag data based on the wake-up signal; and the LoRa (Long Range radio) module is used for sequentially sending the electronic tag data to the external server according to the sequence.
Further, the card reader further comprises: a clock module 10 for recording time; the NFC module is used for converting the detected NFC electronic tag signal into electronic tag data, generating a wake-up signal after the detected NFC electronic tag signal, and sending the electronic tag data and the wake-up signal, and comprises: the NFC module is used for reading a time point recorded by the clock module 10 when an NFC electronic tag signal is detected each time, converting the NFC electronic tag signal into electronic tag data, generating a wake-up signal, and sending the time point, the electronic tag data and the wake-up signal to the control module; and the control module is used for sequencing the received electronic tag data according to the time point based on the awakening signal.
Further, the LoRa module is configured to send the electronic tag data to the external server in sequence according to the sequence, and includes: and the LoRa module is used for sequentially sending the electronic tag data to the external server according to the sequence and the second preset time interval.
Further, the LoRa module is configured to send the electronic tag data to the external server in sequence according to the sequence, and includes: and the control module is used for setting the operating current of the control module to be 3-5 mu A after the LoRa module sends the sequenced last electronic tag data to the external server.
Further, the card reader further comprises: the indicator light 7 is used for displaying a first color when the NFC module detects an NFC electronic tag signal; and/or the indicator light 7 is used for displaying a second color when the LoRa module sends the electronic tag data; and/or the indicator light 7 is used for displaying a third color when the LoRa module is disconnected with the LoRaWAN gateway.
Further, the card reader further comprises: a power management module 8; the power management module 8 is used for supplying power to each module of the card reader.
Further, the LoRa module includes: the LoRa reading module is used for reading electronic tag data and converting the electronic tag data into LoRa electronic tag signals; and the LoRa antenna 2 is used for sending the LoRa electronic tag signal to an external server.
Furthermore, the LoRa antenna 2 adopts an 868MHz antenna, and a circuit board below the LoRa antenna 2 is hollowed.
Further, the card reader further comprises: and the data storage module 5 is used for storing the electronic tag data.
Further, the control module is further configured to send a communication request to the LoRaWAN gateway every third preset time when the connection between the LoRa module and the LoRaWAN gateway is interrupted, and extract the electronic tag data from the data storage module 5 according to the sequence and send the electronic tag data when the LoRa module and the LoRaWAN gateway resume communication.
(III) advantageous effects
The above technical scheme of the utility model has following profitable technological effect:
the utility model discloses an adopt loRa's low-power consumption remote wireless communication technique and NFC near field communication's combination, make the NFC card reader can reach easy to assemble and dispose, need not pass through wired transmission, it is long to reach battery powered operating time simultaneously, characteristics that data transmission distance is far away. And with the popularization of the LoRa technology, the access of the NFC card reader to the LoRaWAN network is simplified.
Drawings
Fig. 1 is a schematic structural diagram of a card reader according to an embodiment of the present invention;
fig. 2 is a schematic diagram illustrating an operation flow of the card reader according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of signal transmission of the card reader according to an embodiment of the present invention
Reference numerals:
1: an NFC antenna; 2: an LoRa antenna; 3: an NFC reading module; 4: a controller; 5: a data storage module; 6: an alarm device; 7: an indicator light; 8: a power management module; 9: a USB interface module; 10: and a clock module.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention will be described in detail with reference to the accompanying drawings. It should be understood that the description is intended to be illustrative only and is not intended to limit the scope of the present invention. Moreover, in the following description, descriptions of well-known structures and techniques are omitted so as to not unnecessarily obscure the concepts of the present invention.
The structure schematic diagram according to the embodiment of the present invention is shown in the attached drawings. The figures are not drawn to scale, wherein certain details are exaggerated and possibly omitted for clarity. The shapes of various regions, layers, and relative sizes and positional relationships therebetween shown in the drawings are merely exemplary, and deviations may occur in practice due to manufacturing tolerances or technical limitations, and a person skilled in the art may additionally design regions/layers having different shapes, sizes, relative positions, as actually required.
It is to be understood that the embodiments described are only some of the embodiments of the present invention, and not all of them. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
Furthermore, the technical features mentioned in the different embodiments of the invention described below can be combined with each other as long as they do not conflict with each other.
As shown in fig. 1, an embodiment of the present invention provides a card reader, including: the NFC module is used for detecting NFC electronic tag signals every other first preset time, converting the detected NFC electronic tag signals into electronic tag data, generating a wake-up signal after the NFC electronic tag signals are detected, and sending the electronic tag data and the wake-up signal; the control module is used for sequencing the electronic tag data based on the wake-up signal; and the LoRa module is used for sequentially sending the electronic tag data to an external server according to the sequence. In a specific embodiment, the control module is an STM32L1 MCU processor.
In a specific embodiment, the NFC module includes an NFC antenna 1 and an NFC reading module 3; the NFC antenna 1 is used for receiving NFC electronic tag signals, and when the NFC electronic tag signals are detected to be accessed, the NFC reading module 3 reads the NFC electronic tag signals and converts the NFC electronic tag signals into electronic tag data; the NFC reading module 3 generates a wake-up signal based on the received NFC electronic tag signal, and sends the electronic tag data and the wake-up signal to the control module 4.
In some embodiments, the NFC reading module 3 employs a CR95HF chip, and when the card reader is powered on for the first time, the CR95HF chip automatically detects the wireless environment in the NFC antenna 1 area, and automatically sets an upper and lower threshold of a wireless signal based on a user's demand for the card reader, and after the setting is completed, the CR95HF chip operates in a sleep mode, that is, the CR95HF chip does not perform signal detection; and then the CR95HF chip automatically wakes up to detect the NFC electronic tag signal every a first preset time, wherein the first preset time is 100ms-300ms, and preferably the first preset time is 200 ms. Card readers on the market all adopt a polling mode to read cards at present, and resources are consumed.
In a specific embodiment, the LoRa module is configured to sequentially send the electronic tag data to an external server according to a sequence, and includes: and the LoRa module is used for sequentially converting the electronic tag data into LoRa electronic tag signals according to the sequence and sending the LoRa electronic tag signals to an external server.
In a specific embodiment, the LoRa module includes an LoRa reading module and an LoRa antenna 2, and the LoRa reading module is configured to read electronic tag data sequenced by the control module 4, and convert the electronic tag data into LoRa electronic tag signals; the LoRa antenna 2 is used for sending LoRa electronic tag signals to an external server, for example, to a LoRaWAN gateway.
In some embodiments, the antenna portions (the NFC antenna 1 and the LoRa antenna 2) include an NFC radio frequency circuit and an LoRa radio frequency circuit, the two portions of radio frequency regions are designed at the same end of the circuit board in a split manner, and no other module circuit is arranged nearby, so that interference of other electronic elements on antenna signals can be effectively avoided, and the circuit volume of the device is saved. The NFC antenna 1 is a PCB (printed circuit board) on-board antenna and is designed in a rectangular mode, and external NFC electronic tag signals can be read through a 13.56MHz space interface in an area. LoRa antenna 2 adopts little volume spring antenna, and the processing of hollowing out is done to the circuit board of LoRa antenna 2 below, the processing of hollowing out indicates that the circuit board area below the spring antenna does not set up the circuit, perhaps, the circuit board area below the spring antenna is hollowed out, and this circuit board is handled in the area below the spring antenna and is got rid of to form one and possess the regional circuit board of vacancy below the spring antenna. The LoRa antenna 2 may be an 868MHz antenna. The method for hollowing can effectively improve the signal strength, so that the signal strength can be enabled to operate in the frequency band of 863-870, and the communication distance can reach 1 kilometer.
In a specific embodiment, the NFC reading module 3 and the control module adopt SPI bus communication, and the LoRa reading module and the control module also adopt SPI bus communication.
In some embodiments, the control module not only performs the sequencing process, but also includes some processing means common to the main control chip, such as: the control module stores the electronic tag data to the data storage module 5, detects whether the wireless environment communication is normal at regular intervals, and sends a networking application signal when the wireless communication is interrupted.
In one embodiment, the card reader further comprises: a clock module 10 for recording time; the NFC module is used for converting the detected NFC electronic tag signal into electronic tag data, generating a wake-up signal after the detected NFC electronic tag signal, and sending the electronic tag data and the wake-up signal, and comprises: the NFC module is used for reading a time point recorded by the clock module 10 when an NFC electronic tag signal is detected each time, converting the NFC electronic tag signal into electronic tag data, generating a wake-up signal after the NFC electronic tag signal is detected, and sending the time point, the electronic tag data and the wake-up signal to the control module; and the control module is used for sequencing the received electronic tag data according to the time point based on the awakening signal.
At present, card readers on the market indicate the time for reading NFC electronic tag signals through the cooperation of a host computer, and equipment does not have the function of independently recording the time. The clock module 10 is added to the equipment, the BM8563ESA chip is adopted, and when the NFC electronic tag signal is read, the equipment can simultaneously read the clock module 10 and record. When the data needs to be sent, the electronic tag data and the card swiping time thereof are sent to the LoRaWAN gateway together.
In some embodiments, the LoRa module is configured to sequentially send the electronic tag data to the external server according to the order, and includes: and the LoRa module is used for sequentially sending the electronic tag data to the external server according to the sequence and the second preset time interval.
In a specific embodiment, the second preset time is 3s to 8s, and preferably, the second preset time is 5 s; the LoRa module sends an electronic tag data every 5s to reserve certain processing time for the LoRaWAN gateway, avoid the LoRaWAN gateway to produce data and pile up.
In this embodiment, the LoRa module is configured to send the electronic tag data to the external server in sequence according to the sequence, and includes: and the control module is used for setting the operating current of the control module to be 3-5 mu A after the LoRa module sends the sequenced last electronic tag data to the external server, so that the electric quantity can be saved, and the power consumption can be reduced.
In a specific embodiment, the control module comprises a low power consumption mode and a working mode, receives electronic tag data and a wake-up signal, and enters the working mode based on the wake-up signal; in the working mode, the running current of the control module is 5-6 mA; in the low power mode, the operating current of the control module is 3-5 muA.
In some embodiments, the card reader further comprises: and the alarm device 6 is in communication connection with the NFC module, and the alarm device 6 is used for emitting a sound signal when the NFC module detects an NFC electronic tag signal.
In some embodiments, the card reader further comprises: the indicator light 7 is used for displaying a first color when the NFC module detects an NFC electronic tag signal; and/or the indicator light 7 is used for displaying a second color when the LoRa module sends the electronic tag data; and/or the indicator light 7 is used for displaying a third color when the LoRa module is disconnected with the LoRaWAN gateway.
In a specific embodiment, the first color is green to indicate that the card is swiped successfully, the second color is blue to indicate that the data is successfully transmitted to the gateway, and the third color is red to indicate that the card reader fails in operation.
In a specific embodiment, the controller 4 is designed by integrating the control module and the LoRa reading module, specifically, the controller employs a RAK811 module (RAK811 is a product model of the controller 4), and the RAK811 module internally integrates the LoRa reading module and the STM32L1 MCU processor, that is, the LoRa reading module and the control module are integrated inside the controller 4. The STM32L1 series micro-control processor has low running current and is suitable for battery equipment.
In some embodiments, the card reader further comprises: a power management module 8; the power management module 8 is used for supplying power to each module of the card reader.
In some embodiments, power management module 8 includes a power source that is a 3.7V lithium battery.
The utility model discloses a card reader, control module begins to arrange received data sequence based on awakening signal, after the last data transmission that the loRa module will be arranged, control module control operating current is 3-5 mu A to make integrated control module and loRa module's controller 4 be in sleep mode, consequently, most time of controller 4 is in sleep mode in this card reader, controller 4 is in sleep mode power consumption low, so make the standby time of card reader long, the battery can be used for 1 year when 2200 milliampere.
In some embodiments, the card reader further comprises: and the data storage module 5 is used for storing the electronic tag data. Preferably, the data storage module 5 adopts a CAT24C256WI chip, so that data cannot be lost when the card reader is powered down, and the stability of the data is ensured.
In some embodiments, the control module is further configured to send a communication request to the LoRaWAN gateway every third preset time when the connection between the LoRa module and the LoRaWAN gateway is interrupted, and extract the electronic tag data from the data storage module 5 according to the order and send the electronic tag data when the LoRa module and the LoRaWAN gateway resume communication.
Because the data storage module 5 adopts the CAT24C256WI chip, when the card reader is disconnected from the wireless network due to an abnormality in the wireless network, the data storage module 5 still stores the electronic tag data received after the network is disconnected, in addition, the control module of the card reader in this embodiment also requests whether the wireless network is recovered at regular intervals, and when the network is recovered, the LoRa module sequentially extracts and sends the data from the data storage module 5 according to the above sorting sequence.
In another embodiment, the card reader further comprises: a USB interface module 9. The user can directly configure the key parameters of the card reader through the USB module, and the USB interface module 9 adopts a USB-to-serial communication mode.
Compared with the improvement of the card reader equipment on the market, the card reader equipment adopts LoRaWAN protocol transmission, electronic tag data can be sent to an Internet network through a LoRaWAN gateway, remote transmission can be realized, and the implementation mode is simple and reliable compared with the card reader equipment on the market.
Referring to fig. 2, the utility model discloses the function flow of card reader does:
1: initially, the card reader initializes all hardware modules, including: the system comprises an NFC module, a control module, an LoRa module, a clock module 10, a data storage module 5 and the like;
2: the card reader enters a sleep mode, and all hardware modules enter a low power consumption mode;
3: the NFC module is awakened at regular time, the NFC module detects whether an NFC electronic tag signal exists in an NFC antenna 1 area, if no NFC electronic tag signal exists, the card reader continues to keep a sleep mode, and if an NFC electronic tag signal exists, the next step is carried out;
4: reading electronic tag data;
5: sending the electronic tag data to a remote server through the LoRa module;
6: the reader enters the sleep mode again.
The traditional low-power-consumption card reader adopts a method that the control module and the NFC module are in active dormancy, and then the control module wakes up at intervals for a short time and further wakes up the NFC module to inquire whether NFC signal input exists or not (namely, card swiping is carried out), so that the control module and the NFC module wake up too frequently and power consumption is increased sharply, and timely response of NFC card swiping action is not facilitated.
And the embodiment of the utility model provides a card reader is provided with loRa module and NFC module. And the card reader is opposite to the working principle of the prior art, namely, interrupt detection is adopted, the controller 4 is in a low power consumption mode most of the time, the NFC card reader module 3 only automatically detects whether an NFC antenna 1 has an NFC electronic tag signal to be accessed every first preset time, and when the NFC electronic tag signal is detected (namely, card swiping action exists), the NFC reading module 3 sends a wake-up signal to the control module to inform the dormant controller 4 to wake up the dormant controller 4, process and send electronic tag data, and then enter the low power consumption state again.
It should be understood that the embodiment of the utility model provides a card reader sets up NFC reading module 3 and needs every certain time to detect whether have the access of NFC electronic tags signal, and is preferred, and NFC reading module 3 is difficult for setting up degree of depth sleep mode, can set up NFC reading module 3 and be Tag select power saving mode for NFC reading module 3 compromises the function that can realize every default time detection NFC electronic tags signal and has saved the consumption again, has further saved the consumption of electric quantity.
It should be understood that, the power consumption of MCU is more usually, and the embodiment of the present invention provides a card reader, which makes MCU have more time to be in sleep state through the above-mentioned manner, so that the energy consumption of the whole card reader is lower.
Referring to fig. 3, the utility model discloses the card reader transmits it to LoRaWAN gateway through LoRa antenna 2 after receiving the NFC electronic tags signal, transmits to the customer end at last.
It is to be understood that the above-described embodiments of the present invention are merely illustrative of or explaining the principles of the invention and are not to be construed as limiting the invention. Therefore, any modification, equivalent replacement, improvement and the like made without departing from the spirit and scope of the present invention should be included in the protection scope of the present invention. Further, it is intended that the appended claims cover all such variations and modifications as fall within the scope and boundaries of the appended claims or the equivalents of such scope and boundaries.
Claims (7)
1. A card reader, comprising:
the NFC module is used for detecting NFC electronic tag signals at intervals of first preset time, converting the detected NFC electronic tag signals into electronic tag data, generating wake-up signals based on the detected NFC electronic tag signals, and sending the electronic tag data and the wake-up signals;
the control module is connected with the NFC module and used for sequencing the electronic tag data based on the wake-up signal;
the NFC module comprises an NFC antenna (1) and an NFC reading module (3);
the NFC antenna (1) is used for receiving the NFC electronic tag signal;
the NFC reading module (3) is used for reading the NFC electronic tag signal and converting the NFC electronic tag signal into electronic tag data when the NFC antenna (1) detects that the NFC electronic tag signal is accessed; the NFC electronic tag is used for receiving NFC electronic tag data and sending the NFC electronic tag data to the control module;
the LoRa module comprises a LoRa reading module and a LoRa antenna (2);
the LoRa reading module is used for reading the electronic tag data sequenced by the control module and converting the electronic tag data into LoRa electronic tag signals;
and the LoRa antenna (2) is used for sequentially sending the LoRa electronic tag signals to an external server according to the sequence.
2. The card reader of claim 1, further comprising:
the clock module (10) is connected with the NFC module, and the clock module (10) is used for recording time;
the NFC module is further used for reading a time point recorded by the clock module (10) when the NFC electronic tag signal is detected each time, and is further used for sending the time point, the electronic tag data and the wake-up signal to the control module;
and the control module is used for sequencing the received electronic tag data according to the time point based on the awakening signal.
3. The card reader according to claim 1 or 2,
and the control module is used for setting the operating current of the control module to be 3-5 mu A after the LoRa module sends the sequenced last electronic tag data to an external server.
4. The card reader of claim 1, further comprising:
an indicator light (7) for displaying a first color when the NFC module detects the NFC electronic tag signal; and/or the presence of a gas in the gas,
the indicator light (7) is used for displaying a second color when the LoRa module sends the electronic tag data; and/or the presence of a gas in the gas,
and the indicator light (7) is used for displaying a third color when the LoRa module is disconnected with the LoRaWAN gateway.
5. The card reader of claim 1, further comprising: a power management module (8);
the power management module (8) is used for supplying power to each module of the card reader.
6. The card reader as claimed in claim 1, wherein the LoRa antenna (2) adopts an 868MHz antenna, and a circuit board below the LoRa antenna (2) is hollowed out.
7. The card reader according to claim 1 or 2, further comprising: and the data storage module (5) is used for storing the electronic tag data.
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| CN202020594096.XU CN212379848U (en) | 2020-04-20 | 2020-04-20 | Card reader |
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| CN202020594096.XU CN212379848U (en) | 2020-04-20 | 2020-04-20 | Card reader |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113888805A (en) * | 2021-08-27 | 2022-01-04 | 金卡智能集团股份有限公司 | Near field and remote communication metering device and system |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113888805A (en) * | 2021-08-27 | 2022-01-04 | 金卡智能集团股份有限公司 | Near field and remote communication metering device and system |
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