CN200993052Y - Automobile fuel pump digital controller - Google Patents
Automobile fuel pump digital controller Download PDFInfo
- Publication number
- CN200993052Y CN200993052Y CNU2006201687055U CN200620168705U CN200993052Y CN 200993052 Y CN200993052 Y CN 200993052Y CN U2006201687055 U CNU2006201687055 U CN U2006201687055U CN 200620168705 U CN200620168705 U CN 200620168705U CN 200993052 Y CN200993052 Y CN 200993052Y
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- fuel pump
- circuit unit
- cpu element
- controller
- chip
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Abstract
The utility model relates to a digital controller of automotive fuel pump, which comprises a cipher key, a cipher key reader and a fuel pump controller. Wherein, a chip for storing the cipher is arranged in the cipher key; a reading circuit for reading and writing the cipher in the key chip is arranged in the cipher key reader, and a signal output end of the cipher key reader is connected with a signal input end of the fuel pump controller; a handing circuit for handing the output signal of the cipher key reader is arranged in the fuel pump controller, and an output end of a driving circuit of the output control signal of the fuel pump controller is connected with an electric machine of the fuel pump. As the utility model provides an automotive fuel pump controller with digital controlling function, only through the cipher key with chip, can the electric machine of the engine fuel pump be started to make the engine work, which has higher safe and anti theft function. 1. By adopting the RFID chip, the cipher code can ensure exclusive coding which can not be replicated; 2. As the fuel pump controller is arranged in the fuel pump assembly, the utility model is safe and reliable, and is not easy to damage from outside force.
Description
Technical field
The utility model relates to a kind of controller of fuel pump, and particularly a kind of digital controller on the automobile fuel pump of being used in that plays the automobile burglar effect belongs to the automotive safety technical field of burglary prevention.
Background technique
Car alarm be exactly a kind of installation onboard, prevent the device that automobile is stolen, alarm can divide four big classes by its structure and function at present: mechanical type, electronic type, chip type and network type, four respectively have quality, but the developing direction of automobile burglar is to degree of intelligence higher chip type and network type development.Mechanical antitheft lock mainly plays the effect of restriction vehicle operating, and is limited to the help that antitheft aspect can provide, and is difficult to withstand the theft of heavy instruments such as crowbar, hacksaw, shear.The disadvantage of electric theft-proof system is the mode of operation of its electronic cipher and remote control, when the car owner uses remote controller switch car door, hide nigh car thief and can steal radio waves or the infrared rays that remote controller sends with receiver or scanner, again through decoding, burglary protection system that just can opening automobile.The network type alarm is meant by GPS (global position system), location and the vehicle of realizing switch door, the starting motor of automobile, the automobile of stopping, automobile can provide long-range functions such as vehicle condition report according to car owner's requirement, but the shortcoming that it exists is: cost an arm and a leg, will pay certain service charge in every month.Chip type digital anti-theft device is the emphasis of present car alarm development, and most of cars all adopt this antitheft mode as first wife's alarm.Chip type digital anti-theft device basic principle is to pin motor, circuit and the oil circuit of automobile, is not having can't to start vehicle under the situation of chip key.The digitized password repetition rate of coding is extremely low, and will just can unblank with the cipher lock that code key contacts on the car, has stopped the disadvantage that is scanned.
Summary of the invention
Goal of the invention: the utility model provides a kind of digital controller of automobile fuel pump, its purpose is to solve existing car alarm and exists radio waves or the infrared rays that anti-theft effect is poor, usefulness is opened in remote control easily to be stolen, and cost an arm and a leg with the antitheft service in location that global position system GPS provides, need pay the problem of service charge etc. in every month.
Technological scheme: the utility model is achieved through the following technical solutions:
A kind of digital controller of automobile fuel pump is characterized in that: this controller comprises code key, code key reader and FPC Fuel Pump Controller; Be provided with the chip of stored password in the code key; Be provided with the read circuit of password in the read-write key chip in the code key reader, the signal output part of code key reader is connected with the signal input part of FPC Fuel Pump Controller, be provided with the processing circuit of handling code key reader output signal in the FPC Fuel Pump Controller, the output terminal of the drive circuit of the output control signal of FPC Fuel Pump Controller is connected with the fuel pump motor.
Chip in the code key is the radio frequency discrimination RFID chip.
Read circuit in the code key reader is by radio-frequency antenna, read head circuit unit, interface circuit unit, E
2ROM storage, CPU element constitute, and radio-frequency antenna is connected with the read head circuit unit, are used to read the interior password of code key chip, and the read head circuit unit is connected with CPU element through data/address bus, CPU element by data/address bus respectively with E
2The ROM storage is connected with the interface circuit unit, and the signal output of interface circuit unit is connected with two Out lets respectively.
Two terminals of described radio-frequency antenna are connected with the read head circuit unit, the read head circuit unit is connected with the central processor CPU unit by data/address bus, deposit in the CPU element and be used to refer to the monitor program of waving, coordinate each element circuit work, preserve the E of effective key number
2The ROM storage is connected with CPU element by bus, and the interface circuit unit is connected with CPU element by bus, and interface circuit is connected with FPC Fuel Pump Controller as output signal end by conductor terminal.
Processing circuit in the FPC Fuel Pump Controller is by anti-jamming circuit unit, power circuit unit, communication interface circuit unit, E
2The drive circuit of ROM storage, CPU element and control fuel pump motor constitutes; The input terminal of anti-jamming circuit unit is connected with the signal output part of code key reader, and the anti-jamming circuit unit is connected with the power circuit unit with the communication interface circuit unit respectively, communication interface circuit unit and E
2The ROM storage is connected with CPU element by bus, and the output terminal of power circuit unit is connected with drive circuit with CPU element respectively, and the control output end of CPU element is connected with the input end of the drive circuit of Control of Automobile engine fuel pump motor.
The input end of described anti-jamming circuit unit is connected with conductor terminal, the anti-jamming circuit unit is connected with the communication interface circuit unit with the power circuit unit respectively, the power circuit unit is connected with drive circuit with CPU element, the output of drive circuit is connected to the fuel pump motor, CPU element through bus respectively with communication interface circuit unit and E
2The ROM storage links to each other, and CPU element is deposited monitor program, the work of commander, each element circuit of coordination FPC Fuel Pump Controller.
Advantage and effect: by the enforcement of technical solutions of the utility model, can solve existing car alarm well exists radio waves or the infrared rays that anti-theft effect is poor, usefulness is opened in remote control easily to be stolen, and cost an arm and a leg with the antitheft service in location that global position system GPS provides, need pay the problem of service charge etc. in every month.
The utility model provides a kind of vehicle fuel pump controller with digital control function, has only by containing the code key of chip, and the motor of ability ato unit fuel pump makes engine operation, makes automobile have the safe antitheft function.
1. code key adopts the RFID chip, guarantees that every key has the unique coding in the world, and is not reproducible;
2. key reader and FPC Fuel Pump Controller are separated, FPC Fuel Pump Controller is installed in the fuel oil pump assembly, connect, control by order with two leads, safe and reliable, be not subject to outside destroy;
3. communication command adopts ciphertext in conjunction with hopping code by the CPU element control processing, can't crack.
Description of drawings
Fig. 1 is the circuit block diagram that each one of the utility model connects;
Fig. 2 is the circuit diagram of the utility model code key reader;
Fig. 3 is the circuit diagram of the utility model read head circuit unit;
Fig. 4 is the circuit diagram of the utility model FPC Fuel Pump Controller.
Embodiment
Below in conjunction with accompanying drawing concrete real mode example of the present utility model is described as follows, but not because of specific embodiment restriction the utility model.
Embodiment 1:
As shown in Figure 1, the utility model is a kind of digital controller of automobile fuel pump, and this controller comprises code key 101, code key reader 100 and FPC Fuel Pump Controller 200; Be provided with the chip of stored password in the code key 101, chip adopts radio frequency discrimination RFID chip, the 125KHz read-only chip of Switzerland EM company, perhaps the 134.2Khz read-only RFID chip of American TI Company, each chip all has unique ID sign indicating number, guarantees the global uniqueness of the password of each key; Be provided with the read head circuit of password in the read-write key chip in the code key reader 100, the signal output part of code key reader 100 is connected with the signal input part of FPC Fuel Pump Controller 200, be provided with the processing circuit of handling code key reader output signal in the FPC Fuel Pump Controller 200, the output terminal of the drive circuit 204 of the output control signal of FPC Fuel Pump Controller 200 is connected with fuel pump motor 207.
Read circuit in the code key reader 100 is by radio-frequency antenna 102, read head circuit unit 103, interface circuit unit 104, E
2ROM storage 105, CPU element 106 constitute, radio-frequency antenna 102 is connected with read head circuit unit 103, be used to read the password in the code key chip, the read head circuit amplifies the oscillator signal of 125KHz through triode, driven antenna produces magnetic field, and code key induction field energy is converted into electric energy, make the RFID chip operation, launch the ID sign indicating number with the Manchester encoding form.Detection, amplification circuit reception, decipher in the read head circuit, export this ID sign indicating number.Read head circuit unit 103 is connected with CPU element 106 through data/address bus, and CPU element adopts 8 single-chip microcomputers commonly used, as the single-chip microcomputer of companies such as Philips, Atmel, Microchip.CPU element is encrypted by id number and rolling code is handled, and adopts the Processing Algorithm of oneself developing, even identical id number, the plain code of transmission guarantees not return to for more than 65000 time.CPU element 106 by data/address bus respectively with E
2ROM storage 105 is connected E with interface circuit unit 104
2The ROM storage adopts erasable, the nonvolatile storages of electricity such as 24C01 or 93C46.Interface circuit unit 104 concrete relay and the differential driving combinational circuits of adopting are realized two lead transmission signal and power supply.The signal output of interface circuit unit 104 is connected with two Out lets 11,12 respectively.
The physical circuit of described key reader circuitry as shown in Figure 2, U1 is a single-chip microcomputer among the figure, includes E
2ROM, U2: the antenna driving amplifier, U3:RFID inverse signal amplifier, U4: voltage regulator+data transmit-receive, produce the VCC working power, U4 output (6 pin) is formed communication interface with the relay J contact, and ANT connects antenna coil.DG, ECU, BAT and GND and automobile key gate switch, engine controller and original fuel pump relay are connected, and LIN, GND link to each other with FPC Fuel Pump Controller 200.When lighting a fire with key, from DG input 12V power supply, single-chip microcomputer output radio signal, after U2 amplifies, the RFID chip received energy in the driven antenna coil, key, output data, antenna receives faint data-signal, and detection, amplification be after export single-chip microcomputer to, single-chip microcomputer to data check, encryption and rolling code handle.Pass to FPC Fuel Pump Controller by under the interface.FPC Fuel Pump Controller is resolved, is contrasted data, and the result passes back to key reader 100, and the key reader sends the turn on pump order again.
The physical circuit of described read head circuit unit 103 as shown in Figure 3, wherein U2 is the antenna driving amplifier, U3 is a RFID inverse signal amplifier, CTR is a control signal, ANT connects antenna coil.IN pin input radio frequency signal, after U2 amplifies, the driven antenna coil, the RFID received energy, output data, antenna receives faint data-signal, and detection, amplification are after OUT output.
Processing circuit in the FPC Fuel Pump Controller 200 is by anti-jamming circuit unit 201, power circuit unit 202, communication interface circuit unit 205, E
2The drive circuit 204 of ROM storage 206, CPU element 203 and control fuel pump motor 207 constitutes; Anti-jamming circuit is made up of isolating diode, filter capacitor and Transient Suppression Diode, the input terminal of anti-jamming circuit unit 201 is connected with the signal output part of code key reader 100, anti-jamming circuit unit 201 is connected with power circuit unit 202 with communication interface circuit unit 205 respectively, and communication interface is with differential signal amplification, shaping.Power circuit comprises rectification, filtering, voltage stabilizing etc., output 5V DC electrical source and motor-driven 12V power supply.Communication interface circuit unit 205 and E
2ROM storage 206 is connected with CPU element 203 by bus, the electric output terminal of power circuit unit 202 is connected with drive circuit 204 with CPU element 203 respectively, the electric energy conversion back that anti-jamming circuit is transmitted is their power supplies, and the control output end of CPU element 203 is connected with the input end of the drive circuit 204 of Control of Automobile engine fuel pump motor 207.Drive circuit is high-power MOS tube, relay etc., according to the fuel oil pump assembly inner space, adopts different driving mode.
The physical circuit of described FPC Fuel Pump Controller circuit as shown in Figure 4, LIN, GND link to each other with key reader 100 among the figure, M+, M-link to each other with the fuel pump motor, C2, D1, D3 form anti-jamming circuit, U1: data transmit-receive+voltage regulator, 3 pin output+5V stabilized power supplies are supplied with single-chip microcomputer U2 and other circuit working, and single-chip microcomputer contains E
2ROM preserves key number, and Q3, D2, C3 and relay J are formed drive circuit.Diode D1, electrochemical capacitor C1 take out electric energy and the storage on the communication interface circuit, produce stable voltage through U1,6 pin of U1 receive the data of communication interface, after single-chip microcomputer is resolved, is contrasted data, the result is uploaded to key reader 100, after the turn on pump order of receiving the key reader, the Single-chip Controlling drive circuit drives the fuel pump motor.When the key reader sends pass pump order, close the fuel pump motor.
Digital controller of the present utility model is that radio-frequency antenna 102 is installed on the keyhole of automobile in concrete the use, and key reader 100 is fixed on the inner appropriate location of automobile instrument panel, and key reader 100 working powers are taken from automobile storage battery.FPC Fuel Pump Controller 200 is installed in the fuel oil pump assembly, by conductor terminal 11 and 12 and key reader 100 couple together, conductor terminal 11,12 possesses power supply and the multiplexing function of communication, when oil fuel feed pump controller 200 provides work institute energy requirement, can carry out exchanges data.
When the code key 101 that has chip started automobile, radio-frequency antenna 102 and read head circuit unit 103 read the number that stores in the code key, are transferred to 106 li of CPU elements through data/address bus, and CPU element 106 is with key and number and be stored in E
2The number of ROM storage 105 compares, if number unanimity, 106 pairs of key numbers of CPU element carry out ciphertext and hopping code is handled, data transfer is become to be fit to the high pressure mode of remote transmission by interface unit circuit unit 104, through conductor terminal 11, the number of 12 keys that will handle is transferred in the circuit of FPC Fuel Pump Controller 200, interfere information on the anti-jamming circuit unit 201 filtering leads, data are converted to CPU element 203 through communication interface circuit unit 205 can recognition data, 203 pairs of data of CPU element are decrypted processing, restore the number of original key, contrast is stored in E then
2The number that the ROM storage is 206 li, if number unanimity, CPU element 203 output drive signals, drive 207 work of fuel pump motor through drive circuit 204, power circuit unit 202 changes into the operating voltage of fuel pump motor 207 and the operating voltage of CPU element 203 to the high voltage of conductor terminal 11 and 12.
Claims (6)
1, a kind of digital controller of automobile fuel pump is characterized in that: this controller comprises code key (101), code key reader (100) and FPC Fuel Pump Controller (200); Be provided with the chip of stored password in the code key (101); Be provided with the read circuit of password in the read-write key chip in the code key reader (100), the signal output part of code key reader (100) is connected with the signal input part of FPC Fuel Pump Controller (200), be provided with the processing circuit of handling code key reader output signal in the FPC Fuel Pump Controller (200), the output terminal of the drive circuit (204) of the output control signal of FPC Fuel Pump Controller (200) is connected with fuel pump motor (207).
2, digital controller of automobile fuel pump according to claim 1 is characterized in that: the chip in the code key (101) is the radio frequency discrimination RFID chip.
3, digital controller of automobile fuel pump according to claim 1 is characterized in that: the read circuit in the code key reader (100) is by radio-frequency antenna (102), read head circuit unit (103), interface circuit unit (104), E
2ROM storage (105), CPU element (106) constitute, radio-frequency antenna (102) is connected with read head circuit unit (103), be used to read the password in the code key chip, read head circuit unit (103) is connected with CPU element (106) through data/address bus, CPU element (106) by data/address bus respectively with E
2ROM storage (105) is connected with interface circuit unit (104), and the signal output of interface circuit unit (104) is connected with two Out lets (11.12) respectively.
4, digital controller of automobile fuel pump according to claim 3, it is characterized in that: two terminals of described radio-frequency antenna (102) are connected with read head circuit unit (103), read head circuit unit (103) is connected with central processor CPU unit (106) by data/address bus, deposit in the CPU element (106) and be used to refer to the monitor program of waving, coordinate each element circuit work, preserve the E of effective key number
2ROM storage (105) is connected with CPU element (106) by bus, interface circuit unit (104) is connected with CPU element (106) by bus, and interface circuit (104) is connected with FPC Fuel Pump Controller (200) as output signal end by conductor terminal (11,12).
5, digital controller of automobile fuel pump according to claim 1 is characterized in that: the processing circuit in the FPC Fuel Pump Controller (200) is by anti-jamming circuit unit (201), power circuit unit (202), communication interface circuit unit (205), E
2The drive circuit (204) of ROM storage (206), CPU element (203) and control fuel pump motor (207) constitutes; The input terminal of anti-jamming circuit unit (201) is connected with the signal output part of code key reader (100), anti-jamming circuit unit (201) is connected with power circuit unit (202) with communication interface circuit unit (205) respectively, communication interface circuit unit (205) and E
2ROM storage (206) is connected with CPU element (203) by bus, the output terminal of power circuit unit (202) is connected with drive circuit (204) with CPU element (203) respectively, and the control output end of CPU element (203) is connected with the input end of the drive circuit (204) of Control of Automobile engine fuel pump motor (207).
6, digital controller of automobile fuel pump according to claim 5, it is characterized in that: the input end of described anti-jamming circuit unit (201) is connected with conductor terminal (11,12), anti-jamming circuit unit (201) is connected with communication interface circuit unit (205) with power circuit unit (202) respectively, power circuit unit (202) is connected with drive circuit (204) with CPU element (203), the output of drive circuit (204) is connected to fuel pump motor (207), CPU element (203) through bus respectively with communication interface circuit unit (205) and E
2ROM storage (206) links to each other, and CPU element (203) is deposited monitor program, the work of commander, each element circuit of coordination FPC Fuel Pump Controller (200).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201687055U CN200993052Y (en) | 2006-12-29 | 2006-12-29 | Automobile fuel pump digital controller |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2006201687055U CN200993052Y (en) | 2006-12-29 | 2006-12-29 | Automobile fuel pump digital controller |
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| Publication Number | Publication Date |
|---|---|
| CN200993052Y true CN200993052Y (en) | 2007-12-19 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2006201687055U Expired - Fee Related CN200993052Y (en) | 2006-12-29 | 2006-12-29 | Automobile fuel pump digital controller |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN200993052Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101327778B (en) * | 2008-07-29 | 2013-02-20 | 奇瑞汽车股份有限公司 | Automobile anti-theft system and anti-theft method |
-
2006
- 2006-12-29 CN CNU2006201687055U patent/CN200993052Y/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101327778B (en) * | 2008-07-29 | 2013-02-20 | 奇瑞汽车股份有限公司 | Automobile anti-theft system and anti-theft method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |