CN111564004A - Helmet detection circuit and device based on RFID and shared electric bicycle - Google Patents
Helmet detection circuit and device based on RFID and shared electric bicycle Download PDFInfo
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- CN111564004A CN111564004A CN202010540559.9A CN202010540559A CN111564004A CN 111564004 A CN111564004 A CN 111564004A CN 202010540559 A CN202010540559 A CN 202010540559A CN 111564004 A CN111564004 A CN 111564004A
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- 101100356534 Arabidopsis thaliana RFI2 gene Proteins 0.000 description 1
- 101100251952 Arabidopsis thaliana RLP3 gene Proteins 0.000 description 1
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F17/00—Coin-freed apparatus for hiring articles; Coin-freed facilities or services
- G07F17/0042—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for hiring of objects
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06K—GRAPHICAL DATA READING; PRESENTATION OF DATA; RECORD CARRIERS; HANDLING RECORD CARRIERS
- G06K7/00—Methods or arrangements for sensing record carriers, e.g. for reading patterns
- G06K7/10—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation
- G06K7/10009—Methods or arrangements for sensing record carriers, e.g. for reading patterns by electromagnetic radiation, e.g. optical sensing; by corpuscular radiation sensing by radiation using wavelengths larger than 0.1 mm, e.g. radio-waves or microwaves
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00309—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated with bidirectional data transmission between data carrier and locks
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C9/00—Individual registration on entry or exit
- G07C9/00174—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys
- G07C9/00571—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by interacting with a central unit
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07F—COIN-FREED OR LIKE APPARATUS
- G07F17/00—Coin-freed apparatus for hiring articles; Coin-freed facilities or services
- G07F17/0042—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for hiring of objects
- G07F17/0057—Coin-freed apparatus for hiring articles; Coin-freed facilities or services for hiring of objects for the hiring or rent of vehicles, e.g. cars, bicycles or wheelchairs
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B13/00—Burglar, theft or intruder alarms
- G08B13/22—Electrical actuation
- G08B13/24—Electrical actuation by interference with electromagnetic field distribution
- G08B13/2402—Electronic Article Surveillance [EAS], i.e. systems using tags for detecting removal of a tagged item from a secure area, e.g. tags for detecting shoplifting
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Abstract
The invention relates to the technical field of shared electric bicycles, in particular to a helmet detection circuit and device based on RFID and a shared electric bicycle. An RFID tag is encapsulated within the helmet, the circuit comprising: the RFID detection circuit scans the RFID label when receiving a vehicle use ending signal, and sends a basket lock detection signal to the basket lock detection circuit when receiving an identification signal sent by the RFID label; the bicycle basket lock detection circuit detects the bicycle basket lock when receiving the bicycle basket lock detection signal, and sends a bicycle basket locking waiting signal to the alarm when the bicycle basket lock is not locked; the alarm receives the signal that the bicycle basket is to be locked and sends out the alarm of forbidding returning the bicycle according to the signal that the bicycle basket is to be locked. The helmet is detected, so that the user is prompted to return to the shared electric bicycle helmet, the helmet is prevented from being lost, and meanwhile, compared with the traditional wired helmet, the helmet is not required to be directly and physically connected with the vehicle, and the driving experience of the user can be improved.
Description
Technical Field
The invention relates to the technical field of shared electric bicycles, in particular to a helmet detection circuit and device based on RFID and a shared electric bicycle.
Background
Sharing electric bicycle is gradually popularized, and the safety problem when driving sharing electric bicycle is also taken into account by the user, and the helmet can be worn in order to protect head safety when the user drives sharing electric bicycle usually, for convenience of customers, can be equipped with safety helmet on sharing electric bicycle, but safety helmet easily loses, fragile. The safety helmet is connected through the wire, so that the safety helmet is not convenient for a user to wear, the driving experience is reduced, the safety helmet is easy to be cut off and damaged by people, and the safety helmet is taken away. The helmet detection device for detecting the mechanical clamping position and physically connecting the mechanical clamping position with a wire is easy to crack manually and take away the helmet.
Disclosure of Invention
The invention mainly aims to provide a helmet detection circuit and device based on RFID and a shared electric bicycle, and aims to solve the problem that a user forgets to return a shared helmet matched with the shared electric bicycle.
In order to achieve the above object, the present invention provides an RFID-based helmet detection circuit, in which an RFID tag is packaged, the RFID-based helmet detection circuit including: the device comprises an RFID detection circuit, a bicycle basket lock detection circuit and an alarm; wherein,
the detection end of the RFID detection circuit is used for receiving the identification signal sent by the RFID label, the first output end of the RFID detection circuit is connected with the input end of the bicycle basket lock detection circuit, the output end of the bicycle basket lock detection circuit is connected with the alarm, and the detection end of the bicycle basket lock detection circuit is connected with the bicycle basket lock; the second output end of the RFID detection circuit is connected with the alarm;
the RFID detection circuit is used for scanning the RFID label when receiving a vehicle end signal;
the RFID detection circuit is also used for sending a bicycle basket lock detection signal to the bicycle basket lock detection circuit when receiving the identification signal sent by the RFID label;
the bicycle basket lock detection circuit is used for detecting the bicycle basket lock when receiving the bicycle basket lock detection signal;
the bicycle basket lock detection circuit is also used for sending a bicycle basket to-be-locked signal to the alarm when the bicycle basket lock is not locked;
and the alarm is used for receiving the bicycle basket locking signal and sending a vehicle returning prohibition alarm according to the bicycle basket locking signal.
Preferably, the RFID detection circuit is further configured to send a helmet return waiting signal to the alarm when the vehicle end use signal is received but the identification signal sent by the RFID tag is not received;
the alarm is also used for receiving the helmet returning signal and sending out a helmet not-returning alarm according to the helmet returning signal.
Preferably, the RFID-based helmet detection circuit further comprises: the bicycle comprises a bicycle basket lock driving circuit, wherein the bicycle basket lock driving circuit is used for receiving a bicycle using signal and opening a bicycle basket lock according to the bicycle using signal.
Preferably, the RFID detection circuit includes a detection chip, a detection unit, and a power supply unit; the output end of the detection unit is connected with the signal input end of the detection chip; the output end of the power supply unit is connected with the first electric energy input end of the detection chip;
the detection unit is used for receiving the radio frequency electric signal of the detection chip and scanning the RFID label according to the radio frequency electric signal;
the detection unit is also used for receiving the identification signal sent by the RFID label
The detection unit is used for receiving the radio frequency electric signal of the detection chip and scanning the RFID label according to the radio frequency electric signal.
Preferably, the RFID detection circuit further includes an auxiliary power supply unit and a fault detection unit; wherein,
the output end of the auxiliary power supply unit is connected with the second electric energy input end of the detection chip, and the input end of the fault detection unit is connected with the signal output end of the detection chip;
the auxiliary power supply unit is used for providing auxiliary power supply electric energy for the detection chip;
and the fault detection unit is used for receiving the feedback electric signal output by the detection chip and outputting the feedback electric signal to an external circuit.
Preferably, the RFID detection circuit further includes a crystal oscillator unit, a first end of the crystal oscillator unit is grounded, and a second end of the crystal oscillator unit is connected to the third signal input end of the detection chip.
Preferably, the bicycle basket lock detection circuit comprises a bicycle basket lock detection unit, a detection end of the bicycle basket lock detection unit is connected with the bicycle basket lock, and an output end of the bicycle basket lock detection unit is connected with the alarm;
and the bicycle basket lock detection unit is used for carrying out state detection on the bicycle basket lock.
Preferably, the bicycle basket lock driving circuit comprises a signal receiving unit, a signal conversion unit and a self-recovery fuse; wherein,
the output end of the signal receiving unit is connected with the first input end of the signal conversion unit, the output end of the signal conversion unit is connected with the bicycle basket lock, the output end of the self-recovery fuse is connected with the second input end of the signal conversion unit, and the input end of the self-recovery fuse is connected with a power supply;
the signal receiving unit is used for receiving the vehicle using signal and outputting the vehicle using signal to the signal conversion unit;
the signal conversion unit is used for converting the vehicle using signal into an unlocking signal and outputting the unlocking signal to the bicycle basket lock so as to unlock the bicycle basket lock.
In addition, in order to achieve the above object, the present invention further provides an RFID-based helmet detection device, which includes the RFID-based helmet detection circuit as described above.
In addition, in order to achieve the above object, the present invention further provides a shared electric bicycle, including the RFID-based helmet detection device as described above, the shared electric bicycle further including a basket, a basket lock, and a helmet; wherein, the helmet is internally packaged with an RFID label.
According to the invention, the RFID label is packaged in the helmet, and the helmet detection circuit based on the RFID comprises: the device comprises an RFID detection circuit, a bicycle basket lock detection circuit and an alarm; the detection end of the RFID detection circuit is used for receiving an identification signal sent by the RFID tag, and the RFID detection circuit is used for scanning the RFID tag when a vehicle use ending signal is received; the RFID detection circuit is also used for sending a bicycle basket lock detection signal to the bicycle basket lock detection circuit when receiving the identification signal sent by the RFID label; the bicycle basket lock detection circuit is used for detecting the bicycle basket lock when receiving the bicycle basket lock detection signal; the bicycle basket lock detection circuit is also used for sending a bicycle basket to-be-locked signal to the alarm when the bicycle basket lock is not locked; and the alarm is used for receiving the bicycle basket locking signal and sending a vehicle returning prohibition alarm according to the bicycle basket locking signal. The RFID tag is packaged in the helmet, and the RDID tag is detected, so that the helmet is detected, a user is prompted to return to the shared electric bicycle helmet, the helmet is prevented from being lost, and meanwhile, compared with the traditional wired helmet, the helmet and a vehicle are not required to be directly physically connected, and the driving experience of the user can be improved.
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 the structures shown in the drawings without creative efforts.
FIG. 1 is a block diagram of a first embodiment of an RFID-based helmet detection circuit according to the present invention;
FIG. 2A is a first schematic diagram of a helmet, a basket, and a basket lock according to an embodiment of the RFID-based helmet detection circuit of the present invention;
FIG. 2B is a second schematic diagram of a helmet, a basket, and a basket lock according to an embodiment of the RFID-based helmet detection circuit of the present invention;
FIG. 3 is a schematic circuit diagram of an RFID detection circuit according to a first embodiment of the RFID-based helmet detection circuit of the present invention;
FIG. 4 is a schematic circuit diagram of a first embodiment of a bicycle basket lock detection unit of the RFID-based helmet detection circuit of the present invention;
FIG. 5 is a block diagram of a second embodiment of the RFID-based helmet detection circuit of the present invention;
fig. 6 is a schematic circuit diagram of a second embodiment of a bicycle basket lock driving circuit of the RFID-based helmet detection circuit of the present invention.
The reference numbers illustrate:
the implementation, functional features and advantages of the objects of the present invention will be further explained with reference to the accompanying drawings.
Detailed Description
It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It should be noted that all the directional indicators (such as up, down, left, right, front, and rear … …) in the embodiment of the present invention are only used to explain the relative position relationship between the components, the movement situation, etc. in a specific posture (as shown in the drawing), and if the specific posture is changed, the directional indicator is changed accordingly.
In addition, the descriptions related to "first", "second", etc. in the present invention are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, such a combination should be considered to be absent and not within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a block diagram illustrating a first embodiment of a helmet detection circuit based on RFID according to the present invention; referring to fig. 3, fig. 3 is a schematic circuit diagram of an RFID detection circuit according to a first embodiment of the RFID-based helmet detection circuit of the present invention; fig. 4 is a schematic circuit diagram of a first embodiment of a bicycle basket lock detection unit of the RFID-based helmet detection circuit of the present invention.
FIG. 2A is a first schematic diagram of a helmet, a basket, and a basket lock according to an embodiment of the RFID-based helmet detection circuit of the present invention; fig. 2B is a second schematic diagram of a helmet, a bicycle basket and a bicycle basket lock according to an embodiment of the RFID-based helmet detection circuit of the present invention.
The helmet detection circuit based on the RFID is applied to a shared electric bicycle, a bicycle basket 1 is arranged on the shared electric bicycle, a helmet 4 is placed in the bicycle basket 1, and the bicycle basket 1 is locked by a bicycle basket lock 2 to prevent the helmet 4 from being lost. The helmet 4 is internally encapsulated with an RFID tag 5. When the helmet 4 is placed in the basket 1, the detection device 3 detects the RFID tag 5 and performs helmet confirmation. The RFID-based helmet detection circuit is arranged in the detection device 3.
In specific implementation, a user scans a code through an APP or a small program to use a car, and when a car-using signal sent by the user is received, the basket lock 2 is opened so that the user can take the helmet 4 out of the basket 1. When a user prepares to return to the vehicle, the detection device 3 receives a vehicle-using ending signal sent by the user, the detection device 3 is triggered to detect whether the helmet 4 exists in the vehicle basket 1, if the helmet 4 is not in the vehicle basket 1, the user is prompted to return the helmet 4, if the helmet 4 is in the vehicle basket 1, the user is prompted to close the vehicle basket, namely, the vehicle basket lock 2 is locked, the detection device 3 detects whether the vehicle basket lock 2 is locked at the moment, and the user is prompted to close the lock when the vehicle basket lock is unlocked.
It is easy to understand that the user can refuse to return the car when the user turns off the car basket lock and does not turn off the helmet, and the user can refuse to return the car when the user turns off the car basket lock and does not turn off the car basket lock when the user turns off the car basket lock and the helmet does not turn off the car basket lock, so that the car-using time is prolonged, and the cost is increased. Therefore, the RFID-based helmet detection circuit plays a role in urging a user to return the helmet and preventing the helmet from being lost.
The RFID-based helmet detection circuit comprises: an RFID detection circuit 10, a bicycle basket lock detection circuit 20 and an alarm 30; the detection end of the RFID detection circuit 10 is configured to receive an identification signal sent by the RFID tag 5, the first output end of the RFID detection circuit 10 is connected to the input end of the bicycle basket lock detection circuit 20, the output end of the bicycle basket lock detection circuit 20 is connected to the alarm 30, and the detection end of the bicycle basket lock detection circuit 20 is connected to the bicycle basket lock 2; a second output of the RFID detection circuit 10 is connected to the alarm 30.
The RFID detection circuit 10 is configured to scan the RFID tag 5 when receiving the vehicle end signal.
The RFID detection circuit 10 comprises a detection chip U, a detection unit 101 and a power supply unit 102; the detection end of the detection unit 101 is used for receiving an identification signal sent by the RFID tag, and the output end of the detection unit 101 is connected with the signal input end of the detection chip U; the output end of the power supply unit 102 is connected with the first electric energy input end of the detection chip U;
the detection unit 101 is configured to receive a radio frequency electrical signal of the detection chip U, and scan the RFID tag 5 according to the radio frequency electrical signal.
The detection unit 10 includes: the detection circuit comprises a first inductor L1, a fourth inductor L4, sixteenth capacitors C16 to twenty-seventh capacitors C27, third resistors R3 to seventh resistors R7 and a detection interface P1. The first end of the first inductor L1 is connected with the tenth pin of the detection chip U, the second end of the first inductor L1 is connected with the first end of the sixteenth capacitor C16, the second end of the sixteenth capacitor C16 is grounded, the first end of the sixteenth capacitor C16 is connected with the first end of the seventeenth capacitor C17, the second end of the seventeenth capacitor C17 is connected with the first end of the eighteenth capacitor C18, the second end of the eighteenth capacitor C18 is connected with the first end of the nineteenth capacitor C19 and the twelfth pin of the detection chip U, and the second end of the nineteenth capacitor C19 is grounded. The second end of the seventeenth capacitor C17 is connected to the first end of the third resistor R3, the second end of the third resistor R3 is connected to the first end of the fifth resistor R5 and the external connection point T6, and the second end of the fifth resistor R5 is connected to the first pin of the detection interface P1. The first end of the fourth inductor L4 is connected to the eleventh pin of the detection chip U, the second end of the fourth inductor L4 is connected to the first end of the twentieth capacitor C20, the second end of the twentieth capacitor C20 is grounded, the first end of the twentieth capacitor C20 is further connected to the first end of the twenty-first capacitor C21, the second end of the twenty-first capacitor C21 is connected to the first end of the twenty-second capacitor C22, the second end of the twenty-second capacitor C22 is connected to the third pin of the detection chip U and the first end of the twenty-third capacitor C23, and the second end of the twenty-third capacitor C23 is grounded. The first end of the twenty-second capacitor C22 is connected with the first end of the fourth resistor R4, and the second end of the fourth resistor R4 is connected with the first end of the seventh resistor R7 and the external connection point T14. The second end of the seventh resistor R7 is connected with the third pin of the detection interface P1. A first end of a twenty-fourth capacitor C24 is connected with a first end of a twenty-fifth capacitor C25 and a first end of an eighteenth capacitor C18, a second end of a twenty-fourth capacitor C24 is connected with a second end of the twenty-fifth capacitor C25, a first end of a twenty-sixth capacitor C26 and a first end of a twenty-seventh capacitor C27, and a second end of the twenty-seventh capacitor C27 is connected with a second end of the twenty-sixth capacitor C26 and a first end of a fourth resistor R4. The first terminal of the twenty-seventh capacitor C27 is also connected to ground. A first end of the twenty-seventh capacitor C27 is connected to a first end of a sixth resistor R6, and a second end of the sixth resistor R6 is connected to a second pin of the test interface P1.
It should be noted that the external connection point T6, the external connection point T14, and an external connection coil (not shown in the drawings, but not affecting the explanation), the coil is used for receiving radio frequency electrical signals sent by the detection chip through the tenth pin (RFO1), the eleventh pin (RFO2), the twelfth pin (RFI1), and the twenty-third pin (RFI2), and the RFID tag 5 is scanned by the radio frequency electrical signals to obtain the identification signal fed back by the RFID tag 5.
The RFID detection circuit 10 is further configured to send a basket lock detection signal to the basket lock detection circuit 20 when receiving the identification signal sent by the RFID tag 5.
It is easy to understand that the RFID tag 5 has an identification code corresponding to the helmet, the RFID detection circuit 10 obtains the identification code carried by the identification signal, and only when the identification code matches, the basket lock detection circuit 20 sends a basket lock detection signal to ensure that the helmet is the helmet 5 corresponding to the current electric sharing bicycle, but not the helmets 5 of other electric sharing bicycles, so as to prevent the helmet loss caused by the random helmet exchange between the electric sharing bicycles for the user.
It should be noted that the twenty-seventh to thirty-second feet of the detection chip U are used for communicating with a controller or a control unit of the shared electric bicycle, and when the RFID tag 5 is identified, an electric signal is fed back to the control unit, so that the control unit obtains states of a bicycle basket and a helmet, and controls the electric bicycle to prohibit returning, remind returning, and the like according to the states of the bicycle basket and the helmet, and the twenty-seventh to thirty-second feet of the detection chip U are further used for sending electric signals to the bicycle basket lock detection circuit 20 and the alarm 30.
The bicycle basket lock detection circuit 20 is configured to detect the bicycle basket lock 2 when receiving the bicycle basket lock detection signal.
The basket lock detection circuit 20 is further configured to send a basket waiting signal to the alarm 30 when the basket lock 2 is not locked.
And the alarm 30 is used for receiving the basket locking signal and sending a vehicle returning prohibition alarm according to the basket locking signal.
The bicycle basket lock detection circuit comprises a bicycle basket lock detection unit 201, the detection end of the bicycle basket lock detection unit 201 is connected with the bicycle basket lock 2, and the output end of the bicycle basket lock detection unit 201 is connected with the alarm 30; the basket lock detection unit 201 is configured to detect a state of the basket lock 2.
The vehicle lock detection unit 201 includes a first diode D1, an eighth resistor R8, a ninth resistor R9, a first triode Q1, a tenth resistor R10, a second triode Q2 and an eleventh resistor R11, wherein a cathode of the first diode D1 is connected to a first end of the ninth resistor R9, a second end of the ninth resistor R9 is connected to a base of the first triode Q1, an emitter of the first triode Q1 is grounded, a collector of the first triode Q1 is connected to a second end of the tenth resistor R10 and a base of the second triode Q2, and an anode of the first diode D1 is connected to a first end of the tenth resistor R10, a power supply terminal VCC and a first end of the eleventh resistor R11. An emitter of the first transistor Q1 is connected to an emitter of the second transistor Q2, and a collector of the second transistor Q2 is connected to a second terminal of the eleventh resistor R11.
It is easy to understand that when the basket lock detection unit 201 is turned off, the first end of the ninth resistor R9 receives the basket lock state signal SADDLE DET and outputs the received signal to the base of the first transistor Q1 through the ninth resistor R9, the base of the first transistor Q1 receives an electrical signal, so that the collector and the emitter of the first transistor Q1 are turned on, the level of the base of the second transistor Q2 rises, and a basket turn-off signal SADDLE DETECT is output to the alarm or the control unit of the shared electric bicycle to indicate the current state of the basket lock. And when the bicycle basket lock is not closed, alarming to remind a user to close the bicycle basket lock, and forbidding the user to return the bicycle before the user closes the bicycle basket lock.
The RFID detection circuit 10 is further configured to send a helmet return waiting signal to the alarm 30 when receiving a vehicle end signal but not receiving an identification signal sent by the RFID tag;
the alarm 30 is further configured to receive the helmet returning signal, and issue a helmet not-yet-returning alarm according to the helmet returning signal.
It is easy to understand that the RFID detection circuit 10 receives the vehicle end use signal sent by the control unit of the shared electric bicycle through the communication function of the detection chip U, and the vehicle end use signal is sent when the user prepares to return to the vehicle. When the user finishes using the electric bicycle, if the RFID tag is detected by the RFID detection circuit 10, but the RFID tag is not a tag of a helmet matched with the current shared electric bicycle, a helmet return signal is also sent to the alarm, so that the helmet loss caused by the exchange of the helmets of the shared electric bicycle by the user is prevented.
The RFID detection circuit 10 further includes an auxiliary power supply unit 103 and a fault detection unit 104; the output end of the auxiliary power supply unit 103 is connected with the second power input end of the detection chip U, and the input end of the fault detection unit 104 is connected with the signal output end of the detection chip U.
And the auxiliary power supply unit 103 is used for providing auxiliary power supply electric energy for the detection chip U.
The power supply unit 101 includes a fifth capacitor C5, a sixth capacitor C6, a seventh capacitor C7, and a second inductor L2, a first end of the fifth capacitor C5 is grounded, a first end of the fifth capacitor C5 is further connected to a zero pin of the detection chip U, a second end of the fifth capacitor C5 is connected to the power supply terminal VDD and the first pin of the detection chip U, an eighth pin of the detection chip U is connected to the first end of the second inductor L2, the first end of the sixth capacitor C6, and the first end of the seventh capacitor C7, the second end of the second inductor L2 is connected to the power supply terminal VDD, and the second end of the sixth capacitor C6 is connected to the second end of the seventh capacitor C7 and grounded.
The auxiliary power supply unit 103 includes eighth to fifteenth capacitors and a third inductor L3, and the auxiliary power supply unit 103 is connected to the third, sixth, seventh, ninth, twelfth, twenty-first, twenty-fourteenth and twenty-sixth pins of the detection chip U. A first terminal of the third inductor L3 is connected to a ninth pin (VSP RF) of the detection chip U, and a second terminal of the third inductor L3 is connected to a power supply terminal VDD.
It should be noted that the power supply unit 101 receives the electric energy from the power source terminal VDD and outputs the electric energy to the detection chip U, and the auxiliary power supply unit 103 is configured to perform auxiliary power supply for the detection chip U and provide a larger power for the detection chip U.
The fault detection unit 104 is configured to receive a feedback electrical signal output by the detection chip U, and output the feedback electrical signal to an external circuit.
The fault detection unit 104 includes a first electronic component R1, a second resistor R2, a third capacitor C3, and a fourth capacitor C4, a first end of the first resistor R1 is connected TO a first end of the third capacitor C3 and an external connection point T12, a second end of the third capacitor C3 is grounded, and a second end of the first resistor R1 is connected TO a twenty-fifth pin (TO1) of the detection chip U; the first end of the second resistor R2 is connected with the first end of the fourth capacitor C4 and an external connection point T13, the second end of the fourth capacitor C4 is grounded, and the second end of the second resistor R2 is connected with a second pin (TO2) of the detection chip U.
The external connection point T12 and the external connection point T13 are connected to an external circuit, and an electrical signal can be fed back to the external circuit through the path, so that the external circuit receives the current state of the detection chip U and performs fault detection.
The RFID detection circuit further comprises a crystal oscillator unit 105, a first end of the crystal oscillator unit 105 is grounded, and a second end of the crystal oscillator unit 105 is connected with a third signal input end of the detection chip U.
The crystal oscillator unit 105 includes a first capacitor C1, a second capacitor C2 and a crystal oscillator X, the fourth pin and the second pin of the crystal oscillator X are connected and grounded, the third pin of the crystal oscillator X and the fourth pin (XTO) of the detection chip U, the second end of the first capacitor C1 is connected, the first end of the first capacitor C1 is grounded, the first pin of the crystal oscillator X and the first end of the second capacitor C2, the fifth pin (XTI) of the detection chip U are connected, and the second end of the second capacitor C2 is grounded. The crystal oscillation unit 105 supplies a stable oscillation frequency to the detection chip U.
According to the embodiment of the invention, the RFID tag is encapsulated in the helmet by arranging the circuit, and the helmet is detected by detecting the RDID tag, so that a user is prompted to return to a shared electric bicycle helmet, and the helmet is prevented from being lost; compared with the traditional wired helmet, the helmet is not required to be physically connected with the vehicle directly, and driving experience of a user is improved.
A second embodiment of the RFID-based helmet detection circuit of the present invention is presented based on the first embodiment of the RFID-based helmet detection circuit of the present invention. Referring to fig. 5, fig. 5 is a block diagram of a second embodiment of the RFID-based helmet detection circuit according to the present invention; referring to fig. 6, fig. 6 is a circuit diagram of a bicycle basket lock driving circuit according to a second embodiment of the RFID-based helmet detection circuit of the present invention.
The RFID-based helmet detection circuit further comprises: the bicycle comprises a bicycle lock driving circuit 40, wherein the bicycle lock driving circuit 40 is used for receiving a bicycle using signal and starting the bicycle lock 2 according to the bicycle using signal.
The basket lock driving circuit 40 includes a signal receiving unit 401, a signal converting unit 402, and a self-recovery fuse F; the output end of the signal receiving unit 401 is connected to the first input end of the signal converting unit 402, the output end of the signal converting unit 402 is connected to the basket lock 2, the output end of the self-recovery fuse F is connected to the second input end of the signal converting unit 402, and the input end of the self-recovery fuse F is connected to the power supply VIN.
The signal receiving unit 401 is configured to receive a vehicle using signal and output the vehicle using signal to the signal converting unit 402.
The signal receiving unit 401 includes a twelfth resistor R12, a thirteenth resistor R13, and a third triode Q3, wherein a first end of the twelfth resistor R12 is connected to a first end of the thirteenth resistor R13, a second end of the twelfth resistor R12 is connected to an emitter of the third triode Q3, an emitter of the third triode Q3 is grounded, a second end of the thirteenth resistor R13 is connected to a base of the third triode Q3, a first end of the thirteenth resistor R13 receives a vehicle use signal, i.e., a basket driving signal SADDLE DRIVER, and the third triode Q3 is an NPN triode and outputs an amplified electrical signal to the signal converting unit through amplification of the NPN triode.
The signal conversion unit 402 is configured to convert the car using signal into an unlocking signal, and output the unlocking signal to the basket lock 2, so that the basket lock 2 is unlocked.
The signal conversion unit 402 includes a fourteenth resistor R14, a fifteenth resistor R15, a sixteenth resistor R16, a second diode D2, a third diode D3, a switching tube Q, and a zener diode D, wherein a second end of the fourteenth resistor R14 is connected to a collector of the third triode Q3, a first end of the fourteenth resistor R14 is connected to an anode of the zener diode D, a first end of the fifteenth resistor R15 is connected to an anode of the zener diode D and a first end of the sixteenth resistor R16, a second end of the fifteenth resistor R15 is connected to a source of the switching tube Q, a second end of the sixteenth resistor R16 is connected to a gate of the switching tube Q, a drain of the switching tube Q is connected to an anode of the second diode D2, a cathode of the second diode D2 is connected to a cathode of the third diode D3, and an anode of the third diode D3 is grounded, the cathode of the second diode D2 is also connected to the basket lock 2. The input end of the self-recovery fuse F is connected with a power supply VIN, and the output end of the self-recovery fuse F is connected with the source electrode of the switching tube Q.
It should be noted that the amplified electrical signal passes through the fourteenth resistor R14 and the sixteenth resistor R16 to the gate of the switching tube Q, the switching tube Q is an enhancement P-channel MOS tube, and when the gate voltage is less than the turn-on voltage, the source is turned off toward the drain. The power source VIN provides a voltage signal to the source of the switching tube Q through the self-recovery fuse F. When the gate receives the amplified electrical signal, a loop in a direction from the source to the drain is triggered, the voltage signal is output to the second diode D2 and is output to the basket lock 2, the basket lock 2 is triggered to be opened, and the voltage signal is an unlocking signal SADDLE CTRL.
This embodiment is through setting up above-mentioned circuit, in time opens the bicycle basket lock when the user uses the car for the user can acquire the helmet in the bicycle basket, makes the user use the helmet at the car in-process, promotes the security of user's car in-process.
In addition, in order to achieve the above object, the present invention further provides an RFID-based helmet detection device, which at least has all the beneficial effects brought by the technical solutions of the above embodiments because the device adopts all the technical solutions of all the above embodiments, and details are not repeated herein.
In addition, in order to achieve the above object, the present invention further provides a shared electric bicycle, including the RFID-based helmet detection device as described above, the shared electric bicycle further including a basket, a basket lock, and a helmet; wherein, the helmet is internally packaged with an RFID label.
Further, a bicycle basket 1 is arranged on the shared electric bicycle, a helmet 4 is placed in the bicycle basket 1, and the bicycle basket 1 is locked through a bicycle basket lock 2 so as to prevent the helmet 4 from being lost. The helmet 4 is internally encapsulated with an RFID tag 5. When the helmet 4 is placed in the basket 1, the detection device 3 detects the RFID tag 5 and performs helmet confirmation. The RFID-based helmet detection circuit is arranged in the detection device 3.
In concrete implementation, the user sweeps a yard through APP or applet etc. and uses the car, when the user prepares to go back the car, detection device 3 receives the end that the user sent and uses the car signal, triggers detection device 3 detects whether exist in bicycle basket 1 helmet 4, if helmet 4 is not in bicycle basket 1, then the suggestion user returns helmet 4, if helmet 4 is in bicycle basket 1, then the suggestion user closes the bicycle basket, promptly, pins bicycle basket lock 2, detection device 3 detects this moment whether bicycle basket lock 2 locks, reminds the user to close the lock when not locking.
It is easy to understand that the user can refuse to return the car when the user turns off the car basket lock and does not turn off the helmet, and the user can refuse to return the car when the user turns off the car basket lock and does not turn off the car basket lock when the user turns off the car basket lock and the helmet does not turn off the car basket lock, so that the car-using time is prolonged, and the cost is increased.
Since the shared electric bicycle adopts all the technical solutions of all the embodiments, at least all the beneficial effects brought by the technical solutions of the embodiments are achieved, and no further description is given here.
It should be understood that the above is only an example, and the technical solution of the present invention is not limited in any way, and in a specific application, a person skilled in the art may set the technical solution as needed, and the present invention is not limited thereto.
It should be noted that the above-described work flows are only exemplary, and do not limit the scope of the present invention, and in practical applications, a person skilled in the art may select some or all of them to achieve the purpose of the solution of the embodiment according to actual needs, and the present invention is not limited herein.
In addition, the technical details that are not elaborated in this embodiment can be referred to the helmet detection circuit based on RFID provided in any embodiment of the present invention, and are not described herein again.
Further, it is to be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or system that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or system. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other like elements in a process, method, article, or system that comprises the element.
The above-mentioned serial numbers of the embodiments of the present invention are merely for description and do not represent the merits of the embodiments.
Through the above description of the embodiments, those skilled in the art will clearly understand that the method of the above embodiments can be implemented by software plus a necessary general hardware platform, and certainly can also be implemented by hardware, but in many cases, the former is a better implementation manner. Based on such understanding, the technical solution of the present invention or portions thereof that contribute to the prior art may be embodied in the form of a software product, where the computer software product is stored in a storage medium (e.g. Read Only Memory (ROM)/RAM, magnetic disk, optical disk), and includes several instructions for enabling a terminal device (e.g. a mobile phone, a computer, a server, or a network device) to execute the method according to the embodiments of the present invention.
The above description is only a preferred embodiment of the present invention, and not intended to limit the scope of the present invention, and all modifications of equivalent structures and equivalent processes, which are made by using the contents of the present specification and the accompanying drawings, or directly or indirectly applied to other related technical fields, are included in the scope of the present invention.
Claims (10)
1. An RFID-based helmet detection circuit, wherein an RFID tag is encapsulated within the helmet, the RFID-based helmet detection circuit comprising: the device comprises an RFID detection circuit, a bicycle basket lock detection circuit and an alarm; wherein,
the detection end of the RFID detection circuit is used for receiving the identification signal sent by the RFID label, the first output end of the RFID detection circuit is connected with the input end of the bicycle basket lock detection circuit, the output end of the bicycle basket lock detection circuit is connected with the alarm, and the detection end of the bicycle basket lock detection circuit is connected with the bicycle basket lock; the second output end of the RFID detection circuit is connected with the alarm;
the RFID detection circuit is used for scanning the RFID label when receiving a vehicle end signal;
the RFID detection circuit is also used for sending a bicycle basket lock detection signal to the bicycle basket lock detection circuit when receiving the identification signal sent by the RFID label;
the bicycle basket lock detection circuit is used for detecting the bicycle basket lock when receiving the bicycle basket lock detection signal;
the bicycle basket lock detection circuit is also used for sending a bicycle basket to-be-locked signal to the alarm when the bicycle basket lock is not locked;
and the alarm is used for receiving the bicycle basket locking signal and sending a vehicle returning prohibition alarm according to the bicycle basket locking signal.
2. The RFID-based helmet detection circuit of claim 1, further configured to send a helmet refund signal to the alarm upon receiving an end-of-car signal but not receiving the identification signal sent by the RFID tag;
the alarm is also used for receiving the helmet returning signal and sending out a helmet not-returning alarm according to the helmet returning signal.
3. The RFID-based helmet detection circuit of claim 2, further comprising: the bicycle comprises a bicycle basket lock driving circuit, wherein the bicycle basket lock driving circuit is used for receiving a bicycle using signal and opening a bicycle basket lock according to the bicycle using signal.
4. The RFID-based helmet detection circuit of claim 2, wherein the RFID detection circuit comprises a detection chip, a detection unit, and a power supply unit; the output end of the detection unit is connected with the signal input end of the detection chip; the output end of the power supply unit is connected with the first electric energy input end of the detection chip;
the detection unit is used for receiving the radio frequency electric signal of the detection chip and scanning the RFID label according to the radio frequency electric signal;
the detection unit is also used for receiving the identification signal sent by the RFID label.
5. The RFID-based helmet detection circuit of claim 4, further comprising an auxiliary power unit and a fault detection unit; wherein,
the output end of the auxiliary power supply unit is connected with the second electric energy input end of the detection chip, and the input end of the fault detection unit is connected with the signal output end of the detection chip;
the auxiliary power supply unit is used for providing auxiliary power supply electric energy for the detection chip;
and the fault detection unit is used for receiving the feedback electric signal output by the detection chip and outputting the feedback electric signal to an external circuit.
6. The RFID-based helmet detection circuit of claim 5 further comprising a crystal unit, wherein a first end of the crystal unit is connected to ground, and a second end of the crystal unit is connected to the third signal input terminal of the detection chip.
7. The RFID-based helmet detection circuit of claim 6, wherein the bicycle basket lock detection circuit comprises a bicycle basket lock detection unit, a detection end of the bicycle basket lock detection unit is connected with the bicycle basket lock, and an output end of the bicycle basket lock detection unit is connected with the alarm;
and the bicycle basket lock detection unit is used for carrying out state detection on the bicycle basket lock.
8. The RFID-based helmet detection circuit of claim 7, wherein the basket lock drive circuit comprises a signal receiving unit, a signal conversion unit, and a self-restoring fuse; wherein,
the output end of the signal receiving unit is connected with the first input end of the signal conversion unit, the output end of the signal conversion unit is connected with the bicycle basket lock, the output end of the self-recovery fuse is connected with the second input end of the signal conversion unit, and the input end of the self-recovery fuse is connected with a power supply;
the signal receiving unit is used for receiving the vehicle using signal and outputting the vehicle using signal to the signal conversion unit;
the signal conversion unit is used for converting the vehicle using signal into an unlocking signal and outputting the unlocking signal to the bicycle basket lock so as to unlock the bicycle basket lock.
9. An RFID-based helmet detection apparatus, comprising an RFID-based helmet detection circuit according to any one of claims 1 to 8.
10. A shared electric bicycle comprising the RFID-based helmet detection apparatus of claim 9, the shared electric bicycle further comprising a basket, a basket lock, and a helmet; wherein, the helmet is internally packaged with an RFID label.
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| CN202010540559.9A CN111564004A (en) | 2020-06-12 | 2020-06-12 | Helmet detection circuit and device based on RFID and shared electric bicycle |
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