WO2021082915A1 - 一种汽车钥匙编程器及汽车诊断仪 - Google Patents

一种汽车钥匙编程器及汽车诊断仪 Download PDF

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Publication number
WO2021082915A1
WO2021082915A1 PCT/CN2020/120861 CN2020120861W WO2021082915A1 WO 2021082915 A1 WO2021082915 A1 WO 2021082915A1 CN 2020120861 W CN2020120861 W CN 2020120861W WO 2021082915 A1 WO2021082915 A1 WO 2021082915A1
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WO
WIPO (PCT)
Prior art keywords
switch
terminal
coil
output terminal
car key
Prior art date
Application number
PCT/CN2020/120861
Other languages
English (en)
French (fr)
Inventor
彭文刚
陈勇
Original Assignee
深圳市道通科技股份有限公司
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Filing date
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Application filed by 深圳市道通科技股份有限公司 filed Critical 深圳市道通科技股份有限公司
Priority to EP20882892.1A priority Critical patent/EP4040679A4/en
Publication of WO2021082915A1 publication Critical patent/WO2021082915A1/zh
Priority to US17/659,888 priority patent/US11935344B2/en

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    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • 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
    • G07C9/00857—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys where the code of the data carrier can be programmed
    • 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
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/51—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used
    • H03K17/56—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices
    • H03K17/60—Electronic switching or gating, i.e. not by contact-making and –breaking characterised by the components used by the use, as active elements, of semiconductor devices the devices being bipolar transistors
    • H03K17/62—Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors
    • H03K17/6257—Switching arrangements with several input- output-terminals, e.g. multiplexers, distributors with several inputs only combined with selecting means
    • 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
    • G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
    • G07C2009/00769—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means
    • 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
    • G07C2009/00753—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys
    • G07C2009/00769—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means
    • G07C2009/00785—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys operated by active electrical keys with data transmission performed by wireless means by light
    • 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
    • G07C2009/00968—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys shape of the data carrier
    • G07C2009/00984—Electronically operated locks; Circuits therefor; Nonmechanical keys therefor, e.g. passive or active electrical keys or other data carriers without mechanical keys shape of the data carrier fob
    • 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
    • G07C2205/00—Indexing scheme relating to group G07C5/00
    • G07C2205/02—Indexing scheme relating to group G07C5/00 using a vehicle scan tool
    • H—ELECTRICITY
    • H03—ELECTRONIC CIRCUITRY
    • H03K—PULSE TECHNIQUE
    • H03K17/00—Electronic switching or gating, i.e. not by contact-making and –breaking
    • H03K17/002—Switching arrangements with several input- or output terminals
    • H03K17/005—Switching arrangements with several input- or output terminals with several inputs only
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/02—Amplitude-modulated carrier systems, e.g. using on-off keying; Single sideband or vestigial sideband modulation
    • H04L27/04—Modulator circuits; Transmitter circuits
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L27/00—Modulated-carrier systems
    • H04L27/10—Frequency-modulated carrier systems, i.e. using frequency-shift keying
    • H04L27/12—Modulator circuits; Transmitter circuits
    • H04L27/125—Modulator circuits; Transmitter circuits using a controlled oscillator in an open loop

Definitions

  • This application relates to the field of automobile technology, and in particular to an automobile key programmer and an automobile diagnostic instrument.
  • car key programmers have become a very important and convenient tool in car maintenance. Users can use car key programmers and diagnostic host computers to quickly complete car key information reading and programming functions.
  • the inventor found that the above-mentioned related technologies have at least the following problems: Since the car keys cover many models, the appearance and frequency are also different, and the coils for activating the key in the traditional car key programmer generally have two coils. Or above, by adding different resonant voltages to different coils to activate the key, so as to program the key. Multiple different resonant voltages usually need to be configured with multiple different coils, which will cause the product to be larger and increase the product. Production costs.
  • the purpose of the embodiments of the present invention is to provide a car key programmer and car diagnostic instrument that can be used to activate different types of keys.
  • an embodiment of the present invention provides a car key programmer, including:
  • the first switch includes a first connection end, a second connection end, and a third connection end.
  • the first connection end is connected to the activation coil, and the first connection end can be connected to the second connection end or the third connection end.
  • the third connecting end is connected;
  • An infrared modulation circuit connected to the second connection terminal
  • the second switch includes a fourth connection end, a fifth connection end, and a sixth connection end.
  • the fourth connection end is connected to the third connection end, and the fourth connection end can be connected to the fifth connection end. Or the sixth connecting end is connected;
  • An amplitude shift keying modulation circuit connected to the fifth connection terminal;
  • the frequency shift keying modulation circuit is connected to the sixth connection terminal.
  • the first switch and the second switch are both relays.
  • the car key programmer further includes:
  • the main control chip is respectively connected to the input terminals of the infrared modulation circuit, the amplitude shift keying modulation circuit and the frequency shift keying modulation circuit;
  • a first switch the control terminal of which is connected to the main control chip, the coil input terminal of the first switch is used to connect to a power source, and the coil output terminal of the first switch is connected to the input terminal of the first switch , The output terminal of the first switch is grounded;
  • a second switch the control terminal of which is connected to the main control chip, the coil input terminal of the second switch is used to connect to a power source, and the coil output terminal of the second switch is connected to the input terminal of the second switch , The output terminal of the second switch is grounded;
  • the main control chip is used to output a high level to control the first switch and the second switch to be turned on.
  • the first switch and the second switch are both NPN transistors.
  • a voltage selection circuit is connected between the sixth connection terminal and the output terminal of the frequency shift keying modulation circuit.
  • the voltage selection circuit includes:
  • the third switch includes a seventh connection end, an eighth connection end, and a ninth connection end.
  • the seventh connection end is connected to the sixth connection end, and the seventh connection end can be connected to the eighth connection end. Or the ninth connecting terminal is connected;
  • a high-voltage transformer circuit connected between the eighth connection terminal and the output terminal of the frequency shift keying modulation circuit
  • a low-voltage transformer circuit is connected between the ninth connection terminal and the output terminal of the frequency shift keying modulation circuit.
  • the third switch is a relay.
  • the voltage selection circuit further includes:
  • a third switch the control terminal of which is connected to the main control chip, the coil input terminal of the third switch is used to connect to a power source, and the coil output terminal of the third switch is connected to the input terminal of the third switch , The output terminal of the third switch is grounded.
  • the third switch is an NPN transistor.
  • the infrared modulation circuit includes:
  • the first encryption chip the input terminal of which is connected to the main control chip, and the output terminal of which is connected to the second connection terminal;
  • the first resonance circuit is connected in parallel between the two control ports of the first encryption chip.
  • the first resonance circuit includes:
  • the first crystal oscillator is connected in parallel between the two control ports of the first encryption chip;
  • the first capacitor one end of which is connected to one end of the first crystal oscillator, and the other end of which is grounded;
  • One end of the second capacitor is connected to the other end of the first crystal oscillator, and the other end is grounded.
  • the amplitude shift keying modulation circuit includes:
  • a second encryption chip the input terminal of which is connected to the main control chip, and the output terminal of which is connected to the fifth connection terminal;
  • the second resonance circuit is connected in parallel between the two control ports of the second encryption chip.
  • the second resonance circuit includes:
  • the second crystal oscillator is connected in parallel between the two control ports of the second encryption chip;
  • a third capacitor one end of which is connected to one end of the second crystal oscillator, and the other end of the capacitor is grounded;
  • One end of the fourth capacitor is connected to the other end of the second crystal oscillator, and the other end is grounded.
  • the frequency shift keying modulation circuit includes:
  • a third encryption chip the input terminal of which is connected to the main control chip, and the output terminal of which is connected to the high-voltage transformer circuit and the low-voltage transformer circuit;
  • the third resonance circuit is connected in parallel between the two control ports of the third encryption chip.
  • the third resonance circuit includes:
  • the third crystal oscillator is connected in parallel between the two control ports of the third encryption chip;
  • a fifth capacitor one end of which is connected to one end of the third crystal oscillator, and the other end of which is grounded;
  • One end of the sixth capacitor is connected to the other end of the third crystal oscillator, and the other end is grounded.
  • the car key programmer further includes:
  • a first rectifying and filtering circuit the input terminal of which is connected to the coil input terminal of the first switch, and the output terminal of which is connected to the input terminal of the first switch and the coil output terminal of the first switch;
  • the input terminal of the second rectifying filter circuit is connected with the coil input terminal of the second switch, and the output terminal is connected with the input terminal of the second switch and the coil output terminal of the second switch.
  • the first finishing filter circuit includes:
  • a seventh capacitor one end of which is connected to the coil input end of the first switch, and the other end of which is grounded;
  • An eighth capacitor connected in parallel to both ends of the seventh capacitor
  • the input terminal of the first diode is connected with the coil output terminal of the first switch, and the output terminal is connected with the coil input terminal of the first switch.
  • the second finishing filter circuit includes:
  • a ninth capacitor one end of which is connected to the coil input end of the second switch, and the other end of which is grounded;
  • the tenth capacitor is connected in parallel with both ends of the ninth capacitor
  • the input terminal of the second diode is connected with the coil output terminal of the second switch, and the output terminal is connected with the coil input terminal of the second switch.
  • the car key programmer further includes:
  • the input terminal of the third rectifying filter circuit is connected with the coil input terminal of the third switch, and the output terminal is connected with the input terminal of the third switch and the coil output terminal of the third switch.
  • the third finishing filter circuit includes:
  • An eleventh capacitor one end of which is connected to the coil input end of the third switch, and the other end of which is grounded;
  • the twelfth capacitor is connected in parallel to both ends of the eleventh capacitor
  • the input terminal of the third diode is connected with the coil output terminal of the third switch, and the output terminal is connected with the coil input terminal of the third switch.
  • an embodiment of the present invention provides an automobile diagnostic instrument, including: an upper computer, and the automobile key programmer as described in the first aspect, the upper computer and the Car key programmer communication connection.
  • the beneficial effect of the present invention is: different from the situation of the prior art, the embodiment of the present invention provides a car key programmer, which is applied to a car diagnostic instrument, and the car key programmer includes an activation coil , The first switch, the second switch, the infrared modulation circuit, the amplitude shift keying modulation circuit and the frequency shift keying modulation circuit, wherein, when the first switch is not energized, the infrared modulation circuit provides the resonant voltage for the activation coil. When one switch is energized and the second switch is not energized, the amplitude shift keying modulation circuit provides resonance voltage for the activation coil.
  • the frequency shift keying modulation circuit When the first and second switches are both energized, the frequency shift keying modulation circuit provides resonance for the activation coil Voltage.
  • the frequency shift keying modulation circuit provides resonance for the activation coil Voltage.
  • only one coil is needed to switch between three resonant voltages, so as to meet the requirements of different types of keys for coils.
  • Figure 1 is a schematic structural diagram of a car key programmer provided by an embodiment of the present invention.
  • Figure 2 is a schematic structural diagram of another car key programmer provided by an embodiment of the present invention.
  • Figure 3 is a schematic structural diagram of another car key programmer provided by an embodiment of the present invention.
  • FIG. 4 is a schematic diagram of electrical connection of a car key programmer provided by an embodiment of the present invention.
  • Fig. 5 is a schematic structural diagram of an automobile diagnostic instrument provided by an embodiment of the present invention.
  • the embodiment of the present invention provides a car key programmer and a car diagnostic instrument.
  • the car key programmer controls the connection between the two switch connection ends to control the infrared modulation circuit, the amplitude shift keying modulation circuit and the frequency shift key.
  • One of the control modulation circuits is connected with the activation coil to solve the needs of different types of keys for coils with different resonance voltages.
  • Using the automobile key programmer provided by the embodiment of the present invention can not only solve the function of realizing multiple types of key activation by a single coil, but also greatly reduce the product volume, make the appearance of the product more beautiful, and reduce the production cost of the product.
  • FIG. 1 shows the structure of a car key programmer provided by an embodiment of the present invention.
  • the car key programmer 100 includes: an activation coil LM, a first A switch K1, an infrared modulation circuit 110, a second switch K2, an amplitude shift keying modulation circuit 120, and a frequency shift keying modulation circuit 130. among them,
  • the first switch K1 includes a first connection terminal 10, a second connection terminal 20, and a third connection terminal 30.
  • the first connection terminal 10 is connected to the activation coil LM, and the first connection terminal 10 can be connected to the activation coil LM.
  • the second connecting end 20 or the third connecting end 30 is connected.
  • the second switch K2 includes a fourth connection terminal 40, a fifth connection terminal 50, and a sixth connection terminal 60.
  • the fourth connection terminal 40 is connected to the third connection terminal 30.
  • the fourth connection terminal 40 It can communicate with the fifth connecting end 50 or the sixth connecting end 60.
  • the first switch K1 and the second switch K2 are mechanical switches or electronic switches that can switch to multiple circuits.
  • they can be relays, change-over switches, toggle switches, etc., usually one
  • the moving contact/contact piece and multiple static contacts/contact pieces are controlled to switch on or off the moving contact/contact piece and the static contact/contact piece in turn to realize the switching of multiple circuits.
  • the infrared modulation circuit 110 is connected to the second connection terminal 20.
  • the amplitude shift keying modulation circuit 120 is connected to the fifth connection terminal 50.
  • the frequency shift keying modulation circuit 130 is connected to the sixth connection terminal 60.
  • the activation coil LM is used to apply different resonance voltages to activate different types of car keys, so as to perform programming operations such as data reading and writing on the keys.
  • the infrared modulation circuit 110, the amplitude shift keying modulation circuit 120, and the frequency shift keying modulation circuit 130 are used to provide different resonance voltages so that the activation coil LM and the infrared modulation circuit 110, When the amplitude shift keying modulation circuit 120 and the frequency shift keying modulation circuit 130 are connected, different resonance voltages can be applied.
  • the infrared modulation circuit 110 can provide an infrared-modulated resonance signal and a resonance voltage, and accordingly can be used to activate and read/write an infrared-modulated automobile key, for example, an infrared key of Mercedes-Benz.
  • the amplitude shift keying modulation circuit 120 can provide modulation using amplitude shift keying (also known as "amplitude shift keying", namely ASK, Amplitude Shift Keying, a key signal modulation method that uses the amplitude of the carrier to transmit information) modulation
  • amplitude shift keying also known as "amplitude shift keying", namely ASK, Amplitude Shift Keying, a key signal modulation method that uses the amplitude of the carrier to transmit information
  • the resonant signal and resonant voltage can be used to activate and read and write car keys modulated by amplitude shift keying accordingly.
  • the frequency shift keying modulation circuit 130 can provide resonant signals and resonant voltages modulated by frequency shift keying (that is, FSK, Frequency Shift Keying, a key signal modulation method that uses the frequency change of the carrier to transmit information).
  • the ground can be used to activate and read/write car keys modulated by frequency shift keying.
  • the embodiment of the present invention provides a car key programmer 100, which is applied to a car diagnostic instrument.
  • the car key programmer 100 includes an activation coil LM, a first switch K1, a second switch K2, an infrared modulation circuit 110, and an The shift keying modulation circuit 120 and the frequency shift keying modulation circuit 130, wherein, when the first switch K1 is not energized, the infrared modulation circuit 110 provides a resonance voltage for the activation coil LM, the first switch K1 is energized and the second switch K2 When it is not energized, the amplitude shift keying modulation circuit 120 provides the resonant voltage for the activation coil LM.
  • the frequency shift keying modulation circuit 130 provides the resonant voltage for the activation coil LM.
  • the car key programmer 100 provided by the embodiment of the invention, only one coil is needed to switch between three resonant voltages, so as to meet the requirements of different types of keys for coils.
  • the first switch K1 and the second switch K2 are both relays.
  • FIG. 2 shows another car key programmer provided by an embodiment of the present invention.
  • the car key programmer 100 further includes: a main control chip MCU, a first switch Q1, a second switch Q2, and a voltage selection circuit 140.
  • the main control chip MCU is respectively connected to the input terminals of the infrared modulation circuit 110, the amplitude shift keying modulation circuit 120, and the frequency shift keying modulation circuit 130.
  • the main control chip MCU is a micro-processor that can interact with the upper computer in the car diagnostic instrument.
  • the micro-processor has a certain computing capability and can be used to set various parameters. , Obtain various parameters, store various parameters, receive various information, process various information and send various information and instructions, for example, it can be a small single-chip microcomputer.
  • the main control chip MCU can obtain data information of infrared modulation or amplitude shift keying modulation or frequency shift keying modulation, and can send the data information to the infrared modulation circuit 110 and the amplitude shift keying modulation after preliminary processing.
  • Shift keying modulation circuit 120 and said frequency shift keying modulation circuit 130 and obtain the corresponding control instruction of which modulation method is infrared modulation, amplitude shift keying modulation or frequency shift keying modulation, and according to The control instruction controls the on and off of the first switch Q1 and the second switch Q2, so that the infrared modulation circuit 110, the amplitude shift keying modulation circuit 120, or the frequency shift keying modulation circuit 130 One of them is in communication with the activation coil.
  • the control terminal of the first switch Q1 is connected to the main control chip MCU, the coil input terminal of the first switch K1 is used to connect to a power source, and the coil output terminal of the first switch K1 is connected to the first switch K1.
  • the input terminal of a switch Q1 is connected, and the output terminal of the first switch Q1 is grounded.
  • the control terminal of the second switch Q2 is connected to the main control chip MCU, the coil input terminal of the second switch K2 is used to connect to a power source, and the coil output terminal of the second switch K2 is connected to the first switch K2.
  • the input end of the second switch Q2 is connected, and the output end of the second switch Q2 is grounded.
  • the first switch Q1 and the second switch Q2 are both NPN transistors.
  • the main control chip MCU is used to output a high level to control the first switch Q1 and the second switch Q2 to turn on, and the main control chip MCU is also used to output a low level to control the first switch respectively Q1 and the second switch Q2 are disconnected.
  • the first switch Q1 when the first switch Q1 is turned off, the first switch K1 is not energized, and the first connection terminal 10 is connected to the second connection terminal 20; the first switch Q1 When turned on, the first switch K1 is energized, and the first connection terminal 10 is connected to the third connection terminal 30; when the second switch Q2 is turned off, the second switch K2 is not energized, The fourth connection terminal 40 is connected to the fifth connection terminal 50; when the second switch Q2 is turned on, the second switch K2 is energized, and the fourth connection terminal 40 is connected to the sixth connection terminal. 60 connected.
  • the voltage selection circuit 140 is connected between the sixth connection terminal 60 and the output terminal of the frequency shift keying modulation circuit 130.
  • the voltage selection circuit 140 is used to adjust the voltage of the resonant signal modulated by frequency shift keying. Specifically, the impedance of the voltage selection circuit 140 can be adjusted to adjust the voltage division of the voltage selection circuit 140. , To realize the adjustment of the magnitude of the resonant voltage applied to both ends of the activation coil LM.
  • FIG. 3 shows the structure of another car key programmer provided by an embodiment of the present invention, wherein the voltage selection circuit 140 includes: a third switch K3, a high voltage The transformer circuit 141, the low-voltage transformer circuit 142, and the third switch Q3.
  • the third switch K3 includes a seventh connection terminal 70, an eighth connection terminal 80, and a ninth connection terminal 90.
  • the seventh connection terminal 70 is connected to the sixth connection terminal 60, and the seventh connection terminal 70 It can be connected to the eighth connecting terminal 80 or the ninth connecting terminal 90.
  • the third switch K3 is a mechanical switch or an electronic switch that can switch to multiple circuits.
  • the third switch K3 is a relay, which can be used to control the high voltage transformer in the voltage selection circuit 140. Switching between the voltage circuit 141 and the low voltage transformer circuit 142.
  • the high-voltage transformer circuit 141 is connected between the eighth connection terminal 80 and the output terminal of the frequency shift keying modulation circuit 130.
  • the impedance of the high-voltage transformer circuit 141 is smaller than that of the low-voltage transformer circuit 142.
  • the resonant signal modulated by frequency shift keying is applied to the resonant voltage of the activation coil LM. Larger.
  • the low voltage transformer circuit 142 is connected between the ninth connection terminal 90 and the output terminal of the frequency shift keying modulation circuit 130.
  • the low-voltage transformer circuit 142 has a greater impedance than the high-voltage transformer circuit 141.
  • the resonant signal modulated by frequency shift keying is applied to the resonant voltage at both ends of the activation coil LM. Smaller.
  • the control terminal of the third switch Q3 is connected to the main control chip MCU, the coil input terminal of the third switch K3 is used to connect to a power source, and the coil output terminal of the third switch K3 is connected to the first switch K3.
  • the input terminal of the three switch Q3 is connected, and the output terminal of the third switch Q3 is grounded.
  • the third switch Q3 is an NPN transistor.
  • the main control chip MCU is used to output a high level to control the third switch Q3 to turn on, and the main control chip MCU is also used to output a low level to control the third switch Q3 to turn off.
  • the third switch Q3 when the third switch Q3 is turned off, the third switch K3 is not energized, and the seventh connection terminal 70 is connected to the eighth connection terminal 80; the third switch Q3 When turned on, the third switch K3 is energized, and the seventh connection terminal 70 is in communication with the ninth connection terminal 90.
  • the infrared modulation circuit 110 includes: a first encryption chip U1 and a first resonance circuit 111.
  • the amplitude shift keying modulation circuit 120 includes: a second encryption chip U2 and a second resonance circuit 121.
  • the frequency shift keying modulation circuit 130 includes: a third encryption chip U3 and a third resonance circuit 131.
  • the modulated resonance signal is encrypted through the first encryption chip U1, the second encryption chip U2, and the third encryption chip U3, or the activation coil LM is removed from the car key.
  • the read data signal is decrypted to ensure the safety of the car key and prevent the car key from being easily cracked.
  • the first resonant circuit 111, the second resonant circuit 121, and the third resonant circuit 131 are used to further generate digital signals after infrared modulation or amplitude shift keying modulation or frequency shift keying modulation in the circuit. Resonance, thereby generating a resonant signal and a resonant voltage to act on the activation coil LM to realize the activation and reading and writing functions of the activation coil LM and the car key.
  • the input end of the first encryption chip U1 is connected to the main control chip MCU, and the output end is connected to the second connection end 20; the first resonance circuit 111 is connected in parallel to the first encryption chip U1 Between two control ports.
  • the input end of the second encryption chip U2 is connected to the main control chip MCU, and the output end is connected to the fifth connection end 50; the second resonance circuit 121 is connected in parallel to the second encryption chip U2 Between two control ports.
  • the input end of the third encryption chip U3 is connected to the main control chip MCU, and the output end is connected to the high-voltage transformer circuit 141 and the low-voltage transformer circuit 142; the third resonance circuit 131 is connected in parallel Between the two control ports of the third encryption chip U3.
  • FIG. 4 shows a schematic diagram of electrical connection of a car key programmer provided by an embodiment of the present invention, wherein the first switch K1, the second switch K2, and the The third switch K3 is a double-pole double-throw relay. And there is,
  • the first resonance circuit 111 includes: a first crystal oscillator X1, a first capacitor C1, and a second capacitor C2.
  • the first crystal oscillator X1 is connected in parallel between the two control ports of the first encryption chip U1; one end of the first capacitor C1 is connected to one end of the first crystal oscillator X1, and the other end is grounded; One end of the second capacitor C2 is connected to the other end of the first crystal oscillator X1, and the other end is grounded.
  • the second resonance circuit 121 includes: a second crystal oscillator X2, a third capacitor C3, and a fourth capacitor C4.
  • the second crystal oscillator X2 is connected in parallel between the two control ports of the second encryption chip U2; one end of the third capacitor C3 is connected to one end of the second crystal oscillator X2, and the other end is grounded;
  • the fourth capacitor C4 has one end connected to the other end of the second crystal oscillator X2, and the other end is grounded.
  • the third resonance circuit 131 includes: a third crystal oscillator X3, a fifth capacitor C5, and a sixth capacitor C6.
  • the third crystal oscillator X3 is connected in parallel between the two control ports of the third encryption chip U3; one end of the fifth capacitor C5 is connected to one end of the third crystal oscillator X3, and the other end is grounded;
  • the sixth capacitor C6 has one end connected to the other end of the third crystal oscillator X3, and the other end is grounded.
  • the models and parameters of the components in the first resonant circuit 111, the second resonant circuit 121, and the third resonant circuit 131 are selected, especially for the first crystal oscillator X1.
  • the signal and parameter selection of the second crystal oscillator X2 and the third crystal oscillator X3 can realize the adjustment of the resonant frequency of the signal, so as to realize the adjustment of the resonant voltage.
  • the car key programmer 100 further includes: a first rectifying and filtering circuit 150, a second rectifying and filtering circuit 160, and a third rectifying and filtering circuit 170, which are used to make the circuit input smooth Signal to reduce noise in the circuit.
  • the input terminal of the first rectifying filter circuit 150 is connected to the coil input terminal 11 of the first switch K1, and the output terminal is connected to the input terminal of the first switch Q1 and the coil of the first switch K1
  • the output terminal 12 is connected.
  • the first finishing filter circuit 150 includes: a seventh capacitor C7, an eighth capacitor C8, and a first diode D1.
  • One end of the seventh capacitor C7 is connected to the coil input terminal 11 of the first switch K1, and the other end is grounded; the eighth capacitor C8 is connected in parallel to both ends of the seventh capacitor C7; A diode D1, the input terminal of which is connected to the coil output terminal 12 of the first switch K1, and the output terminal of which is connected to the coil input terminal 11 of the first switch K1.
  • the input terminal of the second rectifying filter circuit 160 is connected to the coil input terminal 21 of the second switch K2, and the output terminal is connected to the input terminal of the second switch Q2 and the coil of the second switch K2.
  • the output terminal 22 is connected.
  • the second sorting and filtering circuit includes: a ninth capacitor C9, a tenth capacitor C10, and a second diode D2.
  • One end of the ninth capacitor C9 is connected to the coil input terminal 21 of the second switch K2, and the other end is grounded; the tenth capacitor C10 is connected in parallel with both ends of the ninth capacitor C9;
  • Two diodes D2 the input terminal of which is connected to the coil output terminal 22 of the second switch K2, and the output terminal of which is connected to the coil input terminal 21 of the second switch K2.
  • the input terminal of the third rectifying filter circuit 170 is connected with the coil input terminal 31 of the third switch K3, and the output terminal is connected with the input terminal of the third switch Q3 and the coil of the third switch K3.
  • the output terminal 32 is connected.
  • the third finishing filter circuit 170 includes: an eleventh capacitor C11, a twelfth capacitor C12, and a third diode D3.
  • One end of the eleventh capacitor C11 is connected to the coil input terminal 31 of the third switch K3, and the other end is grounded; the twelfth capacitor C12 is connected in parallel to both ends of the eleventh capacitor C11;
  • the input end of the third diode D3 is connected to the coil output end 32 of the third switch K3, and the output end is connected to the coil input end 31 of the third switch K3.
  • the car key programmer 100 further includes a thirteenth capacitor C13, one end of which is respectively connected to one end of the activation coil LM and the first connection end 10, and the other One end is grounded, and the thirteenth capacitor C13 is used for filtering.
  • the high-voltage transformer circuit 141 includes a first resistor R1 and a second resistor R2, and the first resistor R1 and the second resistor R2 are connected to the eighth connection terminal 80 and the frequency shift keying modulation circuit 130
  • the low-voltage transformer circuit 142 includes a third resistor R3 and a fourth resistor R4.
  • the third resistor R3 and the fourth resistor R4 are connected to the ninth connection terminal 90 and the frequency
  • the switching between the high-voltage transformer circuit 141 and the low-voltage transformer circuit 142 is realized by controlling the power on and off of the third switch K3.
  • the total resistance value of the first resistor R1 and the second resistor R2 is smaller than the total resistance value of the third resistor R3 and the fourth resistor R4, so as to achieve a comparison,
  • the output resonant voltage is relatively large, and the low-voltage transformer circuit 142 and the frequency shift keying modulation circuit 130 output relatively large resonant voltage when they are connected. small.
  • the embodiment of the present invention also provides an automobile diagnostic instrument. Please refer to FIG. 5, which shows the structure of an automobile diagnostic instrument provided by an embodiment of the present invention.
  • the automobile diagnostic instrument 200 includes an upper computer 210, and, As in the car key programmer 100 described in the above-mentioned related embodiments of FIGS. 1 to 4, the host computer 210 is in communication connection with the car key programmer 100.
  • the communication connection can be made via the CAN bus.
  • the host computer 210 is a device used in the car diagnostic instrument 200 to perform fault judgment, data analysis, and issue control instructions and data to the car key programmer 100 and other interface circuits, which can control the car key programmer 100 and the car The key performs functions such as data reading and writing.
  • the embodiment of the present invention provides a car key programmer, which is applied to a car diagnostic instrument.
  • the car key programmer includes an activation coil, a first switch, a second switch, an infrared modulation circuit, an amplitude shift keying modulation circuit, and Frequency shift keying modulation circuit, in which, when the first switch is not energized, the infrared modulation circuit provides a resonance voltage for the activation coil, and when the first switch is energized and the second switch is not energized, the amplitude shift keying modulation circuit is the activation coil Provide resonant voltage. When both the first switch and the second switch are energized, the frequency shift keying modulation circuit provides the resonant voltage to the activation coil.
  • only one coil can achieve three Switching of a kind of resonant voltage to solve the needs of different kinds of keys on the coil.
  • the device embodiments described above are only illustrative, and the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physically separate. Units can be located in one place or distributed to multiple network units. Some or all of the modules can be selected according to actual needs to achieve the objectives of the solutions of the embodiments.

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Abstract

本发明实施例涉及汽车技术领域，公开了一种汽车钥匙编程器，应用于汽车诊断仪，该汽车钥匙编程器包括激活线圈、第一切换开关、第二切换开关、红外调制电路、幅移键控调制电路和频移键控调制电路，其中，第一切换开关未通电时，红外调制电路为激活线圈提供谐振电压，第一切换开关通电且第二切换开关未通电时，幅移键控调制电路为激活线圈提供谐振电压，第一切换开关和第二切换开关皆通电时，频移键控调制电路为激活线圈提供谐振电压，本发明实施例提供的汽车钥匙编程器中，仅需一个线圈即可实现三种谐振电压的切换，以解决不同种类的钥匙对线圈的需求。

Description

一种汽车钥匙编程器及汽车诊断仪
本申请要求于2019年10月30日提交中国专利局、申请号为201911045977.4、申请名称为“一种汽车钥匙编程器及汽车诊断仪”的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本申请涉及汽车技术领域，特别涉及一种汽车钥匙编程器及汽车诊断仪。
背景技术
随着汽车诊断技术的快速发展，汽车钥匙编程器已成为汽车维修中非常重要便捷的工具，用户可以利用汽车钥匙编程器加诊断上位机，快速完成汽车钥匙的信息读写编程功能。
在实现本发明实施例过程中，发明人发现以上相关技术中至少存在如下问题：由于汽车钥匙覆盖的车型很多，外观和频率也有差异，传统的汽车钥匙编程器中激活钥匙的线圈一般在两个或以上，通过给不同的线圈加上不同的谐振电压来激活钥匙，从而对钥匙进行编程操作，多个不同的谐振电压通常需要配置多个不同线圈，这会导致产品的体积较大，增加产品的生产成本。
发明内容
针对现有技术的上述缺陷，本发明实施例的目的是提供一种能够用于激活不同种类的钥匙的汽车钥匙编程器汽车诊断仪。
本发明实施例的目的是通过如下技术方案实现的：
为解决上述技术问题，第一方面，本发明实施例中提供了一种汽车钥匙编程器，包括：
激活线圈；
第一切换开关，包括第一连接端、第二连接端和第三连接端，所述第一连接端与所述激活线圈连接，所述第一连接端可与所述第二连接端或所述第三连接端连通；
红外调制电路，与所述第二连接端连接；
第二切换开关，包括第四连接端、第五连接端和第六连接端，所述第四连接端与所述第三连接端连接，所述第四连接端可与所述第五连接端或所述第六连接端连通；
幅移键控调制电路，与所述第五连接端连接；
频移键控调制电路，与所述第六连接端连接。
在一些实施例中，所述第一切换开关和所述第二切换开关均为继电器。
在一些实施例中，所述汽车钥匙编程器还包括：
主控芯片，分别与所述红外调制电路、所述幅移键控调制电路和所述频移 键控调制电路的输入端连接；
第一开关，其控制端与所述主控芯片连接，所述第一切换开关的线圈输入端用于连接电源，所述第一切换开关的线圈输出端与所述第一开关的输入端连接，所述第一开关的输出端接地；
第二开关，其控制端与所述主控芯片连接，所述第二切换开关的线圈输入端用于连接电源，所述第二切换开关的线圈输出端与所述第二开关的输入端连接，所述第二开关的输出端接地；
所述主控芯片用于分别输出高电平控制所述第一开关和所述第二开关导通。
在一些实施例中，所述第一开关和所述第二开关均为NPN型三极管。
在一些实施例中，电压选择电路，其连接在所述第六连接端和所述频移键控调制电路的输出端之间。
在一些实施例中，所述电压选择电路包括：
第三切换开关，包括第七连接端、第八连接端和第九连接端，所述第七连接端与所述第六连接端连接，所述第七连接端可与所述第八连接端或所述第九连接端接通；
高压变压电路，其连接在所述第八连接端和所述频移键控调制电路的输出端之间；
低压变压电路，其连接在所述第九连接端和所述频移键控调制电路的输出端之间。
在一些实施例中，所述第三切换开关为继电器。
在一些实施例中，所述电压选择电路还包括：
第三开关，其控制端与所述主控芯片连接，所述第三切换开关的线圈输入端用于连接电源，所述第三切换开关的线圈输出端与所述第三开关的输入端连接，所述第三开关的输出端接地。
在一些实施例中，所述第三开关为NPN型三极管。
在一些实施例中，所述红外调制电路包括：
第一加密芯片，其输入端与所述主控芯片连接，其输出端与所述第二连接端连接；
第一谐振电路，并联在所述第一加密芯片的两个控制端口之间。
在一些实施例中，所述第一谐振电路包括：
第一晶振，并联在所述第一加密芯片的两个控制端口之间；
第一电容，其一端与所述第一晶振的一端连接，其另一端接地；
第二电容，其一端与所述第一晶振的另一端连接，其另一端接地。
在一些实施例中，所述幅移键控调制电路包括：
第二加密芯片，其输入端与所述主控芯片连接，其输出端与所述第五连接端连接；
第二谐振电路，并联在所述第二加密芯片的两个控制端口之间。
在一些实施例中，所述第二谐振电路包括：
第二晶振，并联在所述第二加密芯片的两个控制端口之间；
第三电容，其一端与所述第二晶振的一端连接，其另一端接地；
第四电容，其一端与所述第二晶振的另一端连接，其另一端接地。
在一些实施例中，所述频移键控调制电路包括：
第三加密芯片，其输入端与所述主控芯片连接，其输出端与所述高压变压电路和所述低压变压电路连接；
第三谐振电路，并联在所述第三加密芯片的两个控制端口之间。
在一些实施例中，所述第三谐振电路包括：
第三晶振，并联在所述第三加密芯片的两个控制端口之间；
第五电容，其一端与所述第三晶振的一端连接，其另一端接地；
第六电容，其一端与所述第三晶振的另一端连接，其另一端接地。
在一些实施例中，所述汽车钥匙编程器还包括：
第一整流滤波电路，其输入端与所述第一切换开关的线圈输入端连接，其输出端与所述第一开关的输入端和所述第一切换开关的线圈输出端连接；
第二整流滤波电路，其输入端与所述第二切换开关的线圈输入端连接，其输出端与所述第二开关的输入端和所述第二切换开关的线圈输出端连接。
在一些实施例中，所述第一整理滤波电路包括：
第七电容，其一端与所述第一切换开关的线圈输入端连接，其另一端接地；
第八电容，并联在所述第七电容的两端；
第一二极管，其输入端与所述第一切换开关的线圈输出端连接，其输出端与所述第一切换开关的线圈输入端连接。
在一些实施例中，所述第二整理滤波电路包括：
第九电容，其一端与所述第二切换开关的线圈输入端连接，其另一端接地；
第十电容，并联在所述第九电容的两端；
第二二极管，其输入端与所述第二切换开关的线圈输出端连接，其输出端与所述第二切换开关的线圈输入端连接。
在一些实施例中，所述汽车钥匙编程器还包括：
第三整流滤波电路，其输入端与所述第三切换开关的线圈输入端连接，其输出端与所述第三开关的输入端和所述第三切换开关的线圈输出端连接。
在一些实施例中，所述第三整理滤波电路包括：
第十一电容，其一端与所述第三切换开关的线圈输入端连接，其另一端接地；
第十二电容，并联在所述第十一电容的两端；
第三二极管，其输入端与所述第三切换开关的线圈输出端连接，其输出端与所述第三切换开关的线圈输入端连接。
为解决上述技术问题，第二方面，本发明实施例中提供了一种汽车诊断仪，包括：上位机、以及，如上述第一方面所述的汽车钥匙编程器，所述上位机与 所述汽车钥匙编程器通信连接。
与现有技术相比，本发明的有益效果是：区别于现有技术的情况，本发明实施例中提供了一种汽车钥匙编程器，应用于汽车诊断仪，该汽车钥匙编程器包括激活线圈、第一切换开关、第二切换开关、红外调制电路、幅移键控调制电路和频移键控调制电路，其中，第一切换开关未通电时，红外调制电路为激活线圈提供谐振电压，第一切换开关通电且第二切换开关未通电时，幅移键控调制电路为激活线圈提供谐振电压，第一切换开关和第二切换开关皆通电时，频移键控调制电路为激活线圈提供谐振电压，本发明实施例提供的汽车钥匙编程器中，仅需一个线圈即可实现三种谐振电压的切换，以解决不同种类的钥匙对线圈的需求。
附图说明
一个或多个实施例中通过与之对应的附图中的图片进行示例性说明，这些示例性说明并不构成对实施例的限定，附图中具有相同参考数字标号的元件/模块和步骤表示为类似的元件/模块和步骤，除非有特别申明，附图中的图不构成比例限制。
图1是本发明实施例提供的一种汽车钥匙编程器的结构示意图；
图2是本发明实施例提供的另一种汽车钥匙编程器的结构示意图；
图3是本发明实施例提供的另一种汽车钥匙编程器的结构示意图；
图4是本发明实施例提供的一种汽车钥匙编程器的电气连接示意图；
图5是本发明实施例提供的一种汽车诊断仪的结构示意图。
具体实施方式
下面结合具体实施例对本发明进行详细说明。以下实施例将有助于本领域的技术人员进一步理解本发明，但不以任何形式限制本发明。应当指出的是，对本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进。这些都属于本发明的保护范围。
为了使本申请的目的、技术方案及优点更加清楚明白，以下结合附图及实施例，对本申请进行进一步详细说明。应当理解，此处所描述的具体实施例仅用以解释本申请，并不用于限定本申请。
需要说明的是，如果不冲突，本发明实施例中的各个特征可以相互结合，均在本申请的保护范围之内。另外，虽然在装置示意图中进行了功能模块划分，但是在某些情况下，可以以不同于装置中的模块划分。此外，本文所采用的“第一”、“第二”、“第三”等字样并不对数据和执行次序进行限定，仅是对功能和作用基本相同的相同项或相似项进行区分。
此外，当元件被表述“固定于”另一个元件，它可以直接在另一个元件上、或者其间可以存在一个或多个居中的元件。当一个元件被表述“连接”另一个 元件，它可以是直接连接到另一个元件、或者其间可以存在一个或多个居中的元件。本说明书所使用的术语“垂直的”、“水平的”、“左”、“右”以及类似的表述只是为了说明的目的。
除非另有定义，本说明书所使用的所有的技术和科学术语与属于本发明的技术领域的技术人员通常理解的含义相同。本说明书中在本发明的说明书中所使用的术语只是为了描述具体的实施方式的目的，不是用于限制本发明。本说明书所使用的术语“和/或”包括一个或多个相关的所列项目的任意的和所有的组合，下面所描述的本发明各个实施方式中所涉及到的技术特征只要彼此之间未构成冲突就可以相互组合。
本发明实施例提供了一种汽车钥匙编程器及汽车诊断仪，该汽车钥匙编程器通过控制两个切换开关连接端的连通情况，以控制由红外调制电路、幅移键控调制电路和频移键控调制电路中的其一与激活线圈连通，以解决不同种类的钥匙对不同谐振电压的线圈的需求。利用本发明实施例提供的汽车钥匙编程器，不单能够解决单一线圈实现多类钥匙激活的功能，还能够大大缩小产品体积，使得产品外观能够更为美观，减少了产品的生产成本。
具体地，下面结合附图，对本发明实施例作进一步阐述。
本发明实施例提供了一种汽车钥匙编程器，请参见图1，其示出了本发明实施例提供的一种汽车钥匙编程器的结构，该汽车钥匙编程器100包括：激活线圈LM、第一切换开关K1、红外调制电路110、第二切换开关K2、幅移键控调制电路120和频移键控调制电路130。其中，
所述第一切换开关K1包括第一连接端10、第二连接端20和第三连接端30，所述第一连接端10与所述激活线圈LM连接，所述第一连接端10可与所述第二连接端20或所述第三连接端30连通。
所述第二切换开关K2包括第四连接端40、第五连接端50和第六连接端60，所述第四连接端40与所述第三连接端30连接，所述第四连接端40可与所述第五连接端50或所述第六连接端60连通。
具体地，所述第一切换开关K1和所述第二切换开关K2为能够切换到多个回路的机械开关或电子开关，例如，可以是继电器、转换开关、拨动开关等，通常设有一个动触头/触片与多个静触头/触片，通过控制动触头/触片依次与静触头/触片的接通或断开，实现多个电路的切换。
所述红外调制电路110与所述第二连接端20连接。所述幅移键控调制电路120与所述第五连接端50连接。所述频移键控调制电路130与所述第六连接端60连接。
具体地，所述激活线圈LM用于施加不同的谐振电压，以激活不同类型的汽车钥匙，从而对钥匙进行数据读写等编程操作。所述红外调制电路110、所述幅移键控调制电路120和所述频移键控调制电路130用于提供不同的谐振电压，以使所述激活线圈LM分别与所述红外调制电路110、所述幅移键控调制电路120和所述频移键控调制电路130连通时，能够被施加上不同的谐振电压。
其中，所述红外调制电路110能够提供红外调制的谐振信号和谐振电压，相应地能够用于激活和读写由红外调制的汽车钥匙，例如，奔驰的红外钥匙。所述幅移键控调制电路120能够提供用幅移键控(又称为“振幅键控”，即为ASK，Amplitude Shift Keying，一种钥匙信号的调制方式，利用载波的幅度传递信息)调制的谐振信号和谐振电压，相应地能够用于激活和读写由幅移键控调制的汽车钥匙。所述频移键控调制电路130能够提供用频移键控(即为FSK，Frequency Shift Keying，一种钥匙信号的调制方式，利用载波的频率变化传递信息)调制的谐振信号和谐振电压，相应地能够用于激活和读写由频移键控调制的汽车钥匙。
本发明实施例中提供了一种汽车钥匙编程器100，应用于汽车诊断仪，该汽车钥匙编程器100包括激活线圈LM、第一切换开关K1、第二切换开关K2、红外调制电路110、幅移键控调制电路120和频移键控调制电路130，其中，第一切换开关K1未通电时，红外调制电路110为激活线圈LM提供谐振电压，第一切换开关K1通电且第二切换开关K2未通电时，幅移键控调制电路120为激活线圈LM提供谐振电压，第一切换开关K1和第二切换开关K2皆通电时，频移键控调制电路130为激活线圈LM提供谐振电压，本发明实施例提供的汽车钥匙编程器100中，仅需一个线圈即可实现三种谐振电压的切换，以解决不同种类的钥匙对线圈的需求。
在一些实施例中，所述第一切换开关K1和所述第二切换开关K2均为继电器，请一并参见图2，其示出了本发明实施例提供的另一种汽车钥匙编程器的结构，所述汽车钥匙编程器100还包括：主控芯片MCU、第一开关Q1、第二开关Q2和电压选择电路140。
所述主控芯片MCU分别与所述红外调制电路110、所述幅移键控调制电路120和所述频移键控调制电路130的输入端连接。
在本发明实施例中，所述主控芯片MCU为一能够与汽车诊断仪内的上位机进行数据交互的微型处理器，该微型处理器具有一定的计算能力，能够用于设定各种参数、获取各种参数、存储各种参数、接收各种信息、处理各种信息以及发送各种信息和指令，例如，可以是一个小型的单片机。
具体地，所述主控芯片MCU能够获取红外调制或幅移键控调制或频移键控调制的数据信息，并且能够将数据信息进行初步处理后发送给所述红外调制电路110、所述幅移键控调制电路120和所述频移键控调制电路130，以及获取相应地采用的是红外调制或幅移键控调制或频移键控调制中的哪种调制方式的控制指令，并根据该控制指令控制所述第一开关Q1和所述第二开关Q2的通断，以使所述红外调制电路110、所述幅移键控调制电路120或所述频移键控调制电路130的其中之一与激活线圈连通。
所述第一开关Q1，其控制端与所述主控芯片MCU连接，所述第一切换开关K1的线圈输入端用于连接电源，所述第一切换开关K1的线圈输出端与所述第一开关Q1的输入端连接，所述第一开关Q1的输出端接地。
所述第二开关Q2，其控制端与所述主控芯片MCU连接，所述第二切换开关K2的线圈输入端用于连接电源，所述第二切换开关K2的线圈输出端与所述第二开关Q2的输入端连接，所述第二开关Q2的输出端接地。
其中，所述第一开关Q1和所述第二开关Q2均为NPN型三极管。所述主控芯片MCU用于分别输出高电平控制所述第一开关Q1和所述第二开关Q2导通，所述主控芯片MCU还用于分别输出低电平控制所述第一开关Q1和所述第二开关Q2断开。在本发明实施例中，所述第一开关Q1关断时，所述第一切换开关K1未通电，所述第一连接端10与所述第二连接端20连通；所述第一开关Q1导通时，所述第一切换开关K1通电，所述第一连接端10与所述第三连接端30连通；所述第二开关Q2关断时，所述第二切换开关K2未通电，所述第四连接端40与所述第五连接端50连通；所述第二开关Q2导通时，所述第二切换开关K2通电，所述第四连接端40与所述第六连接端60连通。
所述电压选择电路140连接在所述第六连接端60和所述频移键控调制电路130的输出端之间。所述电压选择电路140用于调整经频移键控调制后的谐振信号的电压大小，具体地，可通过调整所述电压选择电路140的阻抗，以调整所述电压选择电路140的分压大小，实现对施加在激活线圈LM两端的谐振电压的大小的调整。
在一些实施例中，请一并参见图3，其示出了本发明实施例提供的另一种汽车钥匙编程器的结构，其中，所述电压选择电路140包括：第三切换开关K3、高压变压电路141、低压变压电路142和第三开关Q3。
所述第三切换开关K3包括第七连接端70、第八连接端80和第九连接端90，所述第七连接端70与所述第六连接端60连接，所述第七连接端70可与所述第八连接端80或所述第九连接端90接通。
所述第三切换开关K3为能够切换到多个回路的机械开关或电子开关，在本发明实施例中，所述第三切换开关K3为继电器，能够用于控制述电压选择电路140中高压变压电路141和低压变压电路142的切换。
所述高压变压电路141连接在所述第八连接端80和所述频移键控调制电路130的输出端之间。所述高压变压电路141相对于所述低压变压电路142阻抗更小，其通过分压的方式，使得经频移键控调制后的谐振信号，施加在激活线圈LM两端时的谐振电压较大。
所述低压变压电路142连接在所述第九连接端90和所述频移键控调制电路130的输出端之间。所述低压变压电路142相对于所述高压变压电路141阻抗更大，其通过分压的方式，使得经频移键控调制后的谐振信号，施加在激活线圈LM两端时的谐振电压较小。
所述第三开关Q3，其控制端与所述主控芯片MCU连接，所述第三切换开关K3的线圈输入端用于连接电源，所述第三切换开关K3的线圈输出端与所述第三开关Q3的输入端连接，所述第三开关Q3的输出端接地。
其中，所述第三开关Q3为NPN型三极管。所述主控芯片MCU用于分别输 出高电平控制所述第三开关Q3导通，所述主控芯片MCU还用于分别输出低电平控制所述第三开关Q3断开。在本发明实施例中，所述第三开关Q3关断时，所述第三切换开关K3未通电，所述第七连接端70与所述第八连接端80连通；所述第三开关Q3导通时，所述第三切换开关K3通电，所述第七连接端70与所述第九连接端90连通。
在一些实施例中，请继续参见图3，所述红外调制电路110包括：第一加密芯片U1和第一谐振电路111。所述幅移键控调制电路120包括：第二加密芯片U2和第二谐振电路121。所述频移键控调制电路130包括：第三加密芯片U3和第三谐振电路131。
在本发明实施例中，通过所述第一加密芯片U1、所述第二加密芯片U2和所述第三加密芯片U3将调制后的谐振信号进行加密处理，或将激活线圈LM从汽车钥匙中读取的数据信号进行解密处理，以保证汽车钥匙的安全性，避免汽车钥匙被轻松破解。所述第一谐振电路111、所述第二谐振电路121和所述第三谐振电路131用于使经红外调制或幅移键控调制或频移键控调制后的数字信号在电路中进一步发生谐振，从而生成谐振信号及谐振电压，以作用于激活线圈LM实现激活线圈LM与汽车钥匙的激活和读写功能。
所述第一加密芯片U1，其输入端与所述主控芯片MCU连接，其输出端与所述第二连接端20连接；所述第一谐振电路111并联在所述第一加密芯片U1的两个控制端口之间。
所述第二加密芯片U2，其输入端与所述主控芯片MCU连接，其输出端与所述第五连接端50连接；所述第二谐振电路121并联在所述第二加密芯片U2的两个控制端口之间。
所述第三加密芯片U3，其输入端与所述主控芯片MCU连接，其输出端与所述高压变压电路141和所述低压变压电路142连接；所述第三谐振电路131并联在所述第三加密芯片U3的两个控制端口之间。
在一些实施例中，请参见图4，其示出了本发明实施例提供的一种汽车钥匙编程器的电气连接示意图，其中，所述第一切换开关K1、所述第二切换开关K2和所述第三切换开关K3为双刀双掷继电器。且有，
所述第一谐振电路111包括：第一晶振X1、第一电容C1和第二电容C2。所述第一晶振X1并联在所述第一加密芯片U1的两个控制端口之间；所述第一电容C1，其一端与所述第一晶振X1的一端连接，其另一端接地；所述第二电容C2，其一端与所述第一晶振X1的另一端连接，其另一端接地。
所述第二谐振电路121包括：第二晶振X2、第三电容C3和第四电容C4。所述第二晶振X2并联在所述第二加密芯片U2的两个控制端口之间；所述第三电容C3，其一端与所述第二晶振X2的一端连接，其另一端接地；所述第四电容C4，其一端与所述第二晶振X2的另一端连接，其另一端接地。
所述第三谐振电路131包括：第三晶振X3、第五电容C5和第六电容C6。所述第三晶振X3，并联在所述第三加密芯片U3的两个控制端口之间；所述第 五电容C5，其一端与所述第三晶振X3的一端连接，其另一端接地；所述第六电容C6，其一端与所述第三晶振X3的另一端连接，其另一端接地。
在本发明实施例中，通过所述第一谐振电路111、所述第二谐振电路121和所述第三谐振电路131内元器件的型号和参数选择，特别是对所述第一晶振X1、所述第二晶振X2和所述第三晶振X3的信号和参数选择，能够实现对信号的谐振频率的调整，以实现谐振电压的调整。
在一些实施例中，请继续参见图4，所述汽车钥匙编程器100还包括：第一整流滤波电路150、第二整流滤波电路160和第三整流滤波电路170，用于使电路输入平稳的信号，减少电路中的噪声。
所述第一整流滤波电路150，其输入端与所述第一切换开关K1的线圈输入端11连接，其输出端与所述第一开关Q1的输入端和所述第一切换开关K1的线圈输出端12连接。
具体地，所述第一整理滤波电路150包括：第七电容C7、第八电容C8和第一二极管D1。所述第七电容C7，其一端与所述第一切换开关K1的线圈输入端11连接，其另一端接地；所述第八电容C8并联在所述第七电容C7的两端；所述第一二极管D1，其输入端与所述第一切换开关K1的线圈输出端12连接，其输出端与所述第一切换开关K1的线圈输入端11连接。
所述第二整流滤波电路160，其输入端与所述第二切换开关K2的线圈输入端21连接，其输出端与所述第二开关Q2的输入端和所述第二切换开关K2的线圈输出端22连接。
具体地，所述第二整理滤波电路包括：第九电容C9、第十电容C10和第二二极管D2。所述第九电容C9，其一端与所述第二切换开关K2的线圈输入端21连接，其另一端接地；所述第十电容C10并联在所述第九电容C9的两端；所述第二二极管D2，其输入端与所述第二切换开关K2的线圈输出端22连接，其输出端与所述第二切换开关K2的线圈输入端21连接。
所述第三整流滤波电路170，其输入端与所述第三切换开关K3的线圈输入端31连接，其输出端与所述第三开关Q3的输入端和所述第三切换开关K3的线圈输出端32连接。
具体地，所述第三整理滤波电路170包括：第十一电容C11、第十二电容C12和第三二极管D3。所述第十一电容C11，其一端与所述第三切换开关K3的线圈输入端31连接，其另一端接地；所述第十二电容C12并联在所述第十一电容C11的两端；所述第三二极管D3，其输入端与所述第三切换开关K3的线圈输出端32连接，其输出端与所述第三切换开关K3的线圈输入端31连接。
在一些实施例中，请继续参见图4，所述汽车钥匙编程器100还包括第十三电容C13，其一端分别与所述激活线圈LM的一端和所述第一连接端10连接，其另一端接地，所述第十三电容C13用于滤波。
所述高压变压电路141包括第一电阻R1和第二电阻R2，所述第一电阻R1和所述第二电阻R2连接在所述第八连接端80和所述频移键控调制电路130 的输出端之间，所述低压变压电路142包括第三电阻R3和第四电阻R4，所述第三电阻R3和所述第四电阻R4连接在所述第九连接端90和所述频移键控调制电路130的输出端之间，通过控制所述第三切换开关K3的通断电，实现所述高压变压电路141和所述低压变压电路142的切换。
在本发明实施例中，所述第一电阻R1和所述第二电阻R2的总阻值小于所述第三电阻R3和所述第四电阻R4的总阻值，以实现相较之下，所述高压变压电路141与所述频移键控调制电路130连通时输出的谐振电压较大，所述低压变压电路142与所述频移键控调制电路130连通时输出的谐振电压较小。
本发明实施例还提供了一种汽车诊断仪，请参见图5，其示出了本发明实施例提供的一种汽车诊断仪的结构，所述汽车诊断仪200包括：上位机210、以及，如上述图1至图4相关实施例所述的汽车钥匙编程器100，所述上位机210与所述汽车钥匙编程器100通信连接。例如，可以通过CAN总线进行通信连接。
所述上位机210为汽车诊断仪200内用于进行故障判断、数据分析、下发控制指令和数据到汽车钥匙编程器100等接口电路的装置，其能够控制所述汽车钥匙编程器100与汽车钥匙进行数据读写等功能。
本发明实施例中提供了一种汽车钥匙编程器，应用于汽车诊断仪，该汽车钥匙编程器包括激活线圈、第一切换开关、第二切换开关、红外调制电路、幅移键控调制电路和频移键控调制电路，其中，第一切换开关未通电时，红外调制电路为激活线圈提供谐振电压，第一切换开关通电且第二切换开关未通电时，幅移键控调制电路为激活线圈提供谐振电压，第一切换开关和第二切换开关皆通电时，频移键控调制电路为激活线圈提供谐振电压，本发明实施例提供的汽车钥匙编程器中，仅需一个线圈即可实现三种谐振电压的切换，以解决不同种类的钥匙对线圈的需求。
需要说明的是，以上所描述的装置实施例仅仅是示意性的，其中所述作为分离部件说明的单元可以是或者也可以不是物理上分开的，作为单元显示的部件可以是或者也可以不是物理单元，即可以位于一个地方，或者也可以分布到多个网络单元上。可以根据实际的需要选择其中的部分或者全部模块来实现本实施例方案的目的。
最后应说明的是：以上实施例仅用以说明本发明的技术方案，而非对其限制；在本发明的思路下，以上实施例或者不同实施例中的技术特征之间也可以进行组合，步骤可以以任意顺序实现，并存在如上所述的本发明的不同方面的许多其它变化，为了简明，它们没有在细节中提供；尽管参照前述实施例对本发明进行了详细的说明，本领域的普通技术人员应当理解：其依然可以对前述各实施例所记载的技术方案进行修改，或者对其中部分技术特征进行等同替换；而这些修改或者替换，并不使相应技术方案的本质脱离本发明各实施例技术方案的范围。

Claims (21)

  1. 一种汽车钥匙编程器，其特征在于，包括：
    激活线圈；
    第一切换开关，包括第一连接端、第二连接端和第三连接端，所述第一连接端与所述激活线圈连接，所述第一连接端可与所述第二连接端或所述第三连接端连通；
    红外调制电路，与所述第二连接端连接；
    第二切换开关，包括第四连接端、第五连接端和第六连接端，所述第四连接端与所述第三连接端连接，所述第四连接端可与所述第五连接端或所述第六连接端连通；
    幅移键控调制电路，与所述第五连接端连接；
    频移键控调制电路，与所述第六连接端连接。
  2. 根据权利要求1所述的汽车钥匙编程器，其特征在于，
    所述第一切换开关和所述第二切换开关均为继电器。
  3. 根据权利要求2所述的汽车钥匙编程器，其特征在于，所述汽车钥匙编程器还包括：
    主控芯片，分别与所述红外调制电路、所述幅移键控调制电路和所述频移键控调制电路的输入端连接；
    第一开关，其控制端与所述主控芯片连接，所述第一切换开关的线圈输入端用于连接电源，所述第一切换开关的线圈输出端与所述第一开关的输入端连接，所述第一开关的输出端接地；
    第二开关，其控制端与所述主控芯片连接，所述第二切换开关的线圈输入端用于连接电源，所述第二切换开关的线圈输出端与所述第二开关的输入端连接，所述第二开关的输出端接地；
    所述主控芯片用于分别输出高电平控制所述第一开关和所述第二开关导通。
  4. 根据权利要求3所述的汽车钥匙编程器，其特征在于，
    所述第一开关和所述第二开关均为NPN型三极管。
  5. 根据权利要求3所述的汽车钥匙编程器，其特征在于，还包括：
    电压选择电路，其连接在所述第六连接端和所述频移键控调制电路的输出端之间。
  6. 根据权利要求5所述的汽车钥匙编程器，其特征在于，所述电压选择电路包括：
    第三切换开关，包括第七连接端、第八连接端和第九连接端，所述第七连接端与所述第六连接端连接，所述第七连接端可与所述第八连接端或所述第九连接端接通；
    高压变压电路，其连接在所述第八连接端和所述频移键控调制电路的输出 端之间；
    低压变压电路，其连接在所述第九连接端和所述频移键控调制电路的输出端之间。
  7. 根据权利要求6所述的汽车钥匙编程器，其特征在于，
    所述第三切换开关为继电器。
  8. 根据权利要求7所述的汽车钥匙编程器，其特征在于，所述电压选择电路还包括：
    第三开关，其控制端与所述主控芯片连接，所述第三切换开关的线圈输入端用于连接电源，所述第三切换开关的线圈输出端与所述第三开关的输入端连接，所述第三开关的输出端接地。
  9. 根据权利要求8所述的汽车钥匙编程器，其特征在于，
    所述第三开关为NPN型三极管。
  10. 根据权利要求3所述的汽车钥匙编程器，其特征在于，所述红外调制电路包括：
    第一加密芯片，其输入端与所述主控芯片连接，其输出端与所述第二连接端连接；
    第一谐振电路，并联在所述第一加密芯片的两个控制端口之间。
  11. 根据权利要求10所述的汽车钥匙编程器，其特征在于，所述第一谐振电路包括：
    第一晶振，并联在所述第一加密芯片的两个控制端口之间；
    第一电容，其一端与所述第一晶振的一端连接，其另一端接地；
    第二电容，其一端与所述第一晶振的另一端连接，其另一端接地。
  12. 根据权利要求3所述的汽车钥匙编程器，其特征在于，所述幅移键控调制电路包括：
    第二加密芯片，其输入端与所述主控芯片连接，其输出端与所述第五连接端连接；
    第二谐振电路，并联在所述第二加密芯片的两个控制端口之间。
  13. 根据权利要求12所述的汽车钥匙编程器，其特征在于，所述第二谐振电路包括：
    第二晶振，并联在所述第二加密芯片的两个控制端口之间；
    第三电容，其一端与所述第二晶振的一端连接，其另一端接地；
    第四电容，其一端与所述第二晶振的另一端连接，其另一端接地。
  14. 根据权利要求6所述的汽车钥匙编程器，其特征在于，所述频移键控调制电路包括：
    第三加密芯片，其输入端与所述主控芯片连接，其输出端与所述高压变压电路和所述低压变压电路连接；
    第三谐振电路，并联在所述第三加密芯片的两个控制端口之间。
  15. 根据权利要求14所述的汽车钥匙编程器，其特征在于，所述第三谐振 电路包括：
    第三晶振，并联在所述第三加密芯片的两个控制端口之间；
    第五电容，其一端与所述第三晶振的一端连接，其另一端接地；
    第六电容，其一端与所述第三晶振的另一端连接，其另一端接地。
  16. 根据权利要求3所述的汽车钥匙编程器，其特征在于，所述汽车钥匙编程器还包括：
    第一整流滤波电路，其输入端与所述第一切换开关的线圈输入端连接，其输出端与所述第一开关的输入端和所述第一切换开关的线圈输出端连接；
    第二整流滤波电路，其输入端与所述第二切换开关的线圈输入端连接，其输出端与所述第二开关的输入端和所述第二切换开关的线圈输出端连接。
  17. 根据权利要求16所述的汽车钥匙编程器，其特征在于，所述第一整理滤波电路包括：
    第七电容，其一端与所述第一切换开关的线圈输入端连接，其另一端接地；
    第八电容，并联在所述第七电容的两端；
    第一二极管，其输入端与所述第一切换开关的线圈输出端连接，其输出端与所述第一切换开关的线圈输入端连接。
  18. 根据权利要求16所述的汽车钥匙编程器，其特征在于，所述第二整理滤波电路包括：
    第九电容，其一端与所述第二切换开关的线圈输入端连接，其另一端接地；
    第十电容，并联在所述第九电容的两端；
    第二二极管，其输入端与所述第二切换开关的线圈输出端连接，其输出端与所述第二切换开关的线圈输入端连接。
  19. 根据权利要求8所述的汽车钥匙编程器，其特征在于，所述汽车钥匙编程器还包括：
    第三整流滤波电路，其输入端与所述第三切换开关的线圈输入端连接，其输出端与所述第三开关的输入端和所述第三切换开关的线圈输出端连接。
  20. 根据权利要求19所述的汽车钥匙编程器，其特征在于，所述第三整理滤波电路包括：
    第十一电容，其一端与所述第三切换开关的线圈输入端连接，其另一端接地；
    第十二电容，并联在所述第十一电容的两端；
    第三二极管，其输入端与所述第三切换开关的线圈输出端连接，其输出端与所述第三切换开关的线圈输入端连接。
  21. 一种汽车诊断仪，其特征在于，包括：上位机、以及，如上述权利要求1-20任一项所述的汽车钥匙编程器，所述上位机与所述汽车钥匙编程器通信连接。
PCT/CN2020/120861 2019-10-30 2020-10-14 一种汽车钥匙编程器及汽车诊断仪 WO2021082915A1 (zh)

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