CN2287736Y - Intelligent measuring and recording instrument for automobile driving status - Google Patents
Intelligent measuring and recording instrument for automobile driving status Download PDFInfo
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- CN2287736Y CN2287736Y CN 97202297 CN97202297U CN2287736Y CN 2287736 Y CN2287736 Y CN 2287736Y CN 97202297 CN97202297 CN 97202297 CN 97202297 U CN97202297 U CN 97202297U CN 2287736 Y CN2287736 Y CN 2287736Y
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Abstract
The utility model relates to an intelligent measuring and recording instrument for automobile driving status, comprising a vehicle speed sensor connected with an automobile speedometer, a data communication interface comprising a photoelectric coupler group and a data driver, a computer system comprising a CPU, an accumulator and a power down protecting automatic reset circuit and an interface circuit of printing and displaying. The photoelectric coupler collects ten automobile dynamic parameters such as left and right rotations, left and right lamps, speaker and brake by the automobile distributor, and the CPU continuously checks, circularly real-time record and sends the process calculated result to the accumulator to store. The utility model can display the speed and print t-v curve.
Description
The utility model relates to a kind of vehicle driving condition parameter instrument for measuring and recording device, is used for continuous detecting and writes down the various state parameters of automobilism, can be for analyzing, judge motoring condition and driver's operation situation.
Adopting the vehicle driving condition instrument for measuring and recording is one of important measures of modern transportation management, but the instrument for measuring and recording continuous detecting also writes down motoring condition information, and testing result is stored in the register, when vehicle generation traffic hazard or traffic administration personnel need, institute's canned data can be printed or shown, the operational circumstances that from these information, can reflect motoring condition and driver intuitively, truly, significant to safeguarding traffic safety, constraint driver's behavior and the science that tightens traffic management, fairness.
Present vehicle driving condition instrument for measuring and recording mainly comprises sensor, little process computer and printing, display interface, utilizes little process computer to finish random data collection, data processing, data storage and printing, demonstration.Because digital signal very easily is subjected to the interference of various strong, weak electricity magnetic signals, power supply, again because the difference on the road running environmental baseline, the signal of gathering for guaranteeing or the signal of storage are true, correct, undistorted, require instrument for measuring and recording to have high reliability and high relatively signals collecting speed.Domestic general vehicle driving condition instrument for measuring and recording was gathered a signal in about 30 seconds at present, the fastest is gathered once in per 1 second, also has the shortcoming that the image data kind is few, function is few relatively in addition, thereby far can not adapt to the detection record of many special traffic abnormity situations, be unfavorable for traffic administration and crash analysis.
The purpose of this utility model is a kind of vehicle driving condition intelligence of design instrument for measuring and recording, on the basis of investigation and analysis automobile industry development, all deficiencies at the existing vehicle driving condition measuring and recording device of highway in China present situation and market, make this vehicle driving condition intelligence instrument for measuring and recording that good antijamming capability and high reliability be arranged, and acquired signal speed is fast, function is many.
Vehicle driving condition intelligence instrument for measuring and recording of the present utility model, comprise that the data that are linked in sequence survey record communication device, department of computer science unify printing, display interface, described computer system comprises CPU (central processing unit), storer and the data latches that connects by bus, it is characterized in that:
Described data are surveyed the record communication device and are made of speed pickup and data communication interface, and speed pickup is plugged between automobile odometer axle and flexible axle;
Described data communication interface is made of photoelectrical coupler group and data driver;
The input of each photoelectrical coupler connects the switching value parameter output terminal of loudspeaker, fog lamp, brake, right-hand rotation, left-hand rotation, dipped beam, lampet, lamp far away, right lamp and the left lamp of automobile distributor respectively in the described photoelectrical coupler group, and each photoelectrical coupler output and the output of described speed pickup connect each input end of described CPU (central processing unit) by described data driver.
Described computer system also includes the power down protection automatic reset circuit, is connected and composed by lithium battery and charging circuit, integrated programmable circuit and microprocessor monitors circuit; Lithium battery and charging circuit output thereof connect microprocessor monitors circuit power end; the power down protection signal output part of microprocessor monitors circuit connects the sheet choosing end of described storer; control store remains static; the reseting controling signal end of microprocessor monitors circuit connects the reset terminal of CPU (central processing unit) and integrated programmable circuit respectively, and CPU (central processing unit) and integrated programmable circuit have the control end of output termination microprocessor monitors circuit respectively.
Described speed pickup comprise shell and copper axle, Hall element in the enclosure is set and be nested with in regular turn the lower bearing on the copper axle, down vane, magnet, on vane, nut, head bearing; Described upper and lower vane periphery has flange spaced apart, and described Hall element is arranged on magnet side and can be upper and lower corresponding with the flange place of upper and lower vane.
Described Hall element is integrated honeywell switch sensor.
Vehicle driving condition intelligence instrument for measuring and recording of the present utility model, by speed pickup reception and the speed parameter when CPU (central processing unit) is carried automobilism, the loudspeaker that obtain by the automobile distributor, about ten kinds of switching value dynamic parameters such as commentaries on classics, left and right sides lamp also send CPU (central processing unit) simultaneously, the various state parameters that CPU (central processing unit) continuously detects and the real time record automobile that circulates is in operation, testing result is stored in the storer, shows on printer, display by printing, display interface.By software programming and hardware setting, the data acquisition rate of this vehicle driving condition intelligence instrument for measuring and recording can reach 0.5 second/time, can demonstrate the maximum speed value of stopping in preceding 10 minutes, and printable have the speed of parking (or accident) in first three minute a--time curve; Stop (or accident) last minute half inside trumpet, headlight, lampet, about the states in the time of per 0.5 second such as turning, brake, fog lamp; Per minute kind maximal rate--time curve in preceding 15 hours stops.By the power down protection automatic reset circuit is set, canned data can not lost in 720 hours in power down.
Further specify technology of the present utility model below in conjunction with embodiment and accompanying drawing.
Fig. 1, this vehicle driving condition intelligence instrument for measuring and recording and car electrics connection diagram
Fig. 2, vehicle driving condition intelligence instrument for measuring and recording are implemented circuit diagram one
Fig. 3, vehicle driving condition intelligence instrument for measuring and recording are implemented circuit diagram two
Fig. 4, vehicle speed sensor contour structures synoptic diagram
Fig. 5, the vertical semi-section structural representation of vehicle speed sensor
Fig. 6, vehicle speed sensor vane planar structure synoptic diagram
Referring to Fig. 1,10 is vehicle driving condition intelligence instrument for measuring and recording among the figure, and 20 is dedicated printer, and 30 is display, 60 is vehicle speed sensor, and 70 is speedometer, and 71 is flexible axle, 50 is automobile power source (12v), and to instrument for measuring and recording 10 and to sensor 60 (S1, S2) power supply, 40 is the automobile distributor.Vehicle speed sensor 60 is sent instrument for measuring and recording 10 with vehicle speed signal through S3, the loudspeaker LB of automobile distributor 40, fog lamp FW, brake SC, right-hand rotation YZ, left-hand rotation ZZ, dipped beam JG, lampet XD, distance light YG, right lamp YD and ten vehicle condition data of left lamp ZD send instrument for measuring and recording 10 to through lead, can adopt general aviation socket acquired signal during enforcement.Dedicated printer 20 and display 30 are connected with printing, the display interface of instrument for measuring and recording 10.Take off flexible axle 71 from the speedometer of automobile, vehicle speed sensor 60 is plugged between speedometer axle and the flexible axle, just can receive vehicle speed signal.
Referring to Fig. 2, Fig. 3, line corresponding connections in left side among right-hand line and Fig. 3 among Fig. 2, the enforcement circuit of the intelligent instrument for measuring and recording of formation vehicle driving condition.
Microprocessor U1 (89C52, the band internal program memory), data latches U4 (74LS373) and static memory U5 (6264) connect and compose computer system by bus, photoelectrical coupler U11, U12, U9, U10 (TLP521) receive, change the status signal of fog lamp FW, brake SC right-hand rotation YZ, right lamp YD, left-hand rotation ZZ, left lamp ZD, dipped beam JG, lampet XD, distance light YG and loudspeaker LB respectively, phase inverter U8 (LS04) and bi-directional data forwarder U6 (LS245) composition data driver send microprocessor U1 with various vehicle condition parameters.Programming device U2 (GAL16V8), microprocessor monitors circuit U 3 (MAX691), lithium battery E reach and connect and compose the power down protection automatic reset circuit by voltage-stabilizing device U13 (7805), diode D1, D2 etc., and data driver U7 (LS377) constitutes printing, display interface.U8 input end 1 is connected with vehicle speed sensor S3 among Fig. 1.
The clock generating circuit of being made up of capacitor C 12, C13, crystal oscillator JZ provides clock signal to U1 (18,19 pin).After the vehicle condition data FW that need gather, SC, YZ, ZZ, JG, XD, YG, LB, YD, ZD are imported by the automobile distributor, be sampled as useful signal through photoelectrical coupler U11, U12, U9, U10, wherein FW, SC signal send 1,3 pin of U1 through phase inverter U8 (13,3 pin), and all the other 8 signals send 32 to 39 pin of U1 through bi-directional data forwarder U6.Also send 12 or 14 or 15 pin of U1 through phase inverter U8 by the level signal S3 of speed pickup collection.
CPU (central processing unit) (CPU) U1 carries out calculation process to the data of input, and the result send storer U5 or printing, display interface U7.The reading and writing of U1 (16,17 pin) control signal is sent WE (27 pin) and the OE (22 pin) of storer U5 respectively, and storer U5 is carried out data reading and writing control.
20,26 (CE1, CE2) pin of storer U5 is that sheet selects control end, when its signal was effective, the 11-19 pin of U5 was the data input/output port, and the 3-10 pin is address A0-A7,2,21, the 23-25 pin is address A8-A12, be connected with the respective foot of CPU (central processing unit) respectively.
Data latches U4, because its 1 pin Enable Pin ground connection, thereby be in the permission output state all the time.Its 11 pin is connected with 30 pin of U1, and 32 to 39 pin of U1 are ternary bidirectional interface, and by 30 pin (ALE) control transmission data or the low order address of U1, when ALE was high level, U4 sent U5 with the address date of U1; When ALE was low level, the U4 output terminal was latched, and bus is given U1 and transmitted data.
Bi-directional data forwarder U6 is used to drive 8 vehicle condition signals, and when its 1 pin (DIR) was high level, 2 to 9 pin were input end, and the 11-18 pin is an output terminal, and 19 pin are controlled by the corresponding signal output terminal of programming device for allowing end.
Output signal driver U7 will send printer, display after will driving from CPU (central processing unit) U1 or the signal that is stored in storer U5, its 1 pin is subjected to the signal controlling of programming device U2 for allowing end, 11 pin are output control terminal, controlled by the write signal WR of CPU (central processing unit) U1, when 11 pin are " 1 ", when 1 pin was " 0 ", U7 had output.
Programming device U2 by forming logic control element after the software programming, makes control signal more flexible, and increases confidentiality.2,3,4 pin are signal input end, be connected with 26,27,28 pin of U1,11,5 pin insert WR, the RD signal of U1 respectively, 8,9 pin insert the control signal of U1, its 6 pin inserts the reseting controling signal of microprocessor monitors circuit U 3, the logical combination of above-mentioned input control signal produces following output control signal: the data output rate of its 19 pin output clock pulse signal control U7 (1 pin); Its 17 pin outputs signal to the collection of 8 kinds of motoring condition information of 19 foot control systems of U6; Its 18 pin connects 13 pin of U3, and notice U3 sends the power down protection signal immediately to U5.
Microprocessor monitors circuit U 3; its 1 pin is connected with the charging circuit of lithium battery E; its 2 pin is that power output end is connected with 28 pin (VCC) of U5; 6,12 pin output power down protection signal is controlled the sheet choosing end (20,26 pin) of U5 jointly; its 11 pin inserts the control signal of U1; its 16 pin output reset signal is to the reset terminal (9 pin) of U1, and its 15 human hair combing waste goes out 6 pin of reseting controling signal to U2.
When automobile power source was working properly, to lithium battery E charging, this moment, each input, the output signal of U3 were normal; When the unexpected power down of automobile power source, power by lithium battery E, and go out the sheet choosing end of signal to U5 by 6,12 human hair combing wastes, storer U5 is in forbids read-write state, and U5 is powered, data in the protected storage by U3 (1 pin); When automobile power source recover normal after, go out reset signal to CPU (central processing unit) U1 by 16 human hair combing wastes of U3, CPU is automatically reset, rework, other control signals also enter normal condition.
In this enforcement circuit, the working power end of each integrated circuit improves the antijamming capability of circuit all over the ground and connect electric capacity.
Referring to Fig. 4, Fig. 5, Fig. 6,, 1 is the copper axle among the figure, 2 is head bearing, 3 is nut (two), 4 is last vane, 5 is magnet, 6 are vane down, 7 is lower bearing, 8 is Hall element, 9 is shielding line, 11 is sensor housing, 12 is sender unit cap.
Sensor outer housing 11,12 adopts non-magnet material, and magnet 5 is annular permanent magnet, and upper and lower vane 4,6 adopts galvanized sheet iron.Hall element 8 is a kind of integrated honeywell switch sensors, and collection magnetosensitive Hall Effect chip and integrated circuit are one, as UGN3100 series, are connected and composed by Hall voltage generator, differential amplifier, voltage regulator and Schmidt trigger.Be in the electromotive force that the Hall voltage generator in the magnetic field produced and after differential amplifier amplifies, add to this schmitt trigger, the output voltage of differential amplifier determines the duty of this schmitt trigger, and the output pulse of this schmitt trigger is directly sent central processing unit after anti-phase.The vehicle speed sensor output pulse amplitude is a Transistor-Transistor Logic level, and the recurrence interval is depended on automobile driving speed.The periphery of upper and lower vane 4,6 uniformly-spaced is provided with 4 flanges among Fig. 6, when running car, the sensor that is connected on the automobile rotational speed mileometer rotates thereupon synchronously, the permanent magnet and the vane that drive in the sensor rotate together, magnetic field intensity is changed, the induced potential that is in the hall device generation in the variation magnetic field changes, and upper and lower vane whenever rotates a circle, and can produce 4 pulse signals.
Vehicle driving condition intelligence instrument for measuring and recording of the present utility model adopts the vehicle speed sensor of photoelectric coupled device acquisition state signal and employing unique texture, and take multiple interference protection measure in software programming, has improved the antijamming capability of signals collecting; Adopt programming device and microprocessor monitors circuit in the hardware circuit, constitute the power down protection automatic reset circuit jointly, strengthened the accuracy of functional reliability and data; By multiple automobilism dynamic parameters such as the record speed of a motor vehicle, loudspeaker, lamp, turning, brakes, and raising data acquisition rate, thereby it is more accurate, more comprehensively, more scientifically reflect automobilism and driver's operation, for just, judge that accident responsibility provides strong evidence exactly, modern transportation management is had positive effect.
Claims (4)
1, a kind of vehicle driving condition intelligence instrument for measuring and recording, comprise that the data that are linked in sequence survey record communication device, department of computer science unify printing, display interface, described computer system comprises CPU (central processing unit), storer and the data latches that connects by bus, it is characterized in that:
Described data are surveyed the record communication device and are made of speed pickup and data communication interface, and speed pickup is plugged between automobile odometer axle and flexible axle;
Described data communication interface is made of photoelectrical coupler group and data driver;
The input of each photoelectrical coupler connects the switching value parameter output terminal of loudspeaker, fog lamp, brake, right-hand rotation, left-hand rotation, dipped beam, lampet, lamp far away, right lamp and the left lamp of automobile distributor respectively in the described photoelectrical coupler group, and each photoelectrical coupler output and the output of described speed pickup connect each input end of described CPU (central processing unit) by described data driver.
2, vehicle driving condition intelligence instrument for measuring and recording according to claim 1, it is characterized in that: described computer system also includes the power down protection automatic reset circuit, is connected and composed by lithium battery and charging circuit, integrated programmable circuit and microprocessor monitors circuit; Lithium battery and charging circuit output thereof connect microprocessor monitors circuit power end; the power down protection signal output part of microprocessor monitors circuit connects the sheet choosing end of described storer; control store remains static; the reseting controling signal end of microprocessor monitors circuit connects the reset terminal of CPU (central processing unit) and integrated programmable circuit respectively, and CPU (central processing unit) and integrated programmable circuit have the control end of output termination microprocessor monitors circuit respectively.
3, vehicle driving condition according to claim 1 intelligence instrument for measuring and recording is characterized in that: described speed pickup comprise shell and copper axle, Hall element in the enclosure is set and be nested with in regular turn the lower bearing on the copper axle, down vane, magnet, on vane, nut, head bearing; Described upper and lower vane periphery has flange spaced apart, and described Hall element is arranged on magnet side and can be upper and lower corresponding with the flange place of upper and lower vane.
4, vehicle driving condition intelligence instrument for measuring and recording according to claim 3, it is characterized in that: described Hall element is integrated honeywell switch sensor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97202297 CN2287736Y (en) | 1997-03-06 | 1997-03-06 | Intelligent measuring and recording instrument for automobile driving status |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 97202297 CN2287736Y (en) | 1997-03-06 | 1997-03-06 | Intelligent measuring and recording instrument for automobile driving status |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2287736Y true CN2287736Y (en) | 1998-08-12 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 97202297 Expired - Fee Related CN2287736Y (en) | 1997-03-06 | 1997-03-06 | Intelligent measuring and recording instrument for automobile driving status |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2287736Y (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002035478A1 (en) * | 2000-10-23 | 2002-05-02 | Hui Liu | Device for recording vehicle running state and anti-theft |
| CN103576579A (en) * | 2013-11-25 | 2014-02-12 | 重庆大唐科技股份有限公司 | Brake signal acquisition device based on CAN on-site bus, acquisition system and vehicle control system |
-
1997
- 1997-03-06 CN CN 97202297 patent/CN2287736Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2002035478A1 (en) * | 2000-10-23 | 2002-05-02 | Hui Liu | Device for recording vehicle running state and anti-theft |
| CN103576579A (en) * | 2013-11-25 | 2014-02-12 | 重庆大唐科技股份有限公司 | Brake signal acquisition device based on CAN on-site bus, acquisition system and vehicle control system |
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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 |
Granted publication date: 1998.08.12 |