CN1434275A - Car loading digital display and running state recorder and query instrument - Google Patents
Car loading digital display and running state recorder and query instrument Download PDFInfo
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- CN1434275A CN1434275A CN 03118610 CN03118610A CN1434275A CN 1434275 A CN1434275 A CN 1434275A CN 03118610 CN03118610 CN 03118610 CN 03118610 A CN03118610 A CN 03118610A CN 1434275 A CN1434275 A CN 1434275A
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Abstract
The invention refers to a digital of the load of the automobile, the running-status recorder and the query apparatus. The recorder has a load sensor isgnal generator fixed between the rear axle and the crossbeam, composed of the load sensor and the fixed protection seat; and a integrated system set in the cab, the load signal processing circuit composed of filter, amplifier, A/D converter and microcomputer; the automobile velocity signal processing circuit mainly composed of the automobile velocity processing unit and the microcomputer. The query apparatus is mainly composed of the data-receiving processing unit including CPU, decoder and application software, the classified query selection keyboard, the display and the printer.
Description
Technical field
The present invention relates to a kind of automobile load numeral and show and travel conditions registering instrument and inquiring instrument thereof, belong to the surveying instrument technical field.
Background technology
The automobile main parts size, particularly the most important foundation of stressed parts design is a nominal load capacity.The dead weight capacity of automobile is a static load, because the road surface is uneven, jolts when travelling, and the Weight Loaded of vehicle and part are conducted oneself with dignity and certainly led to the unexpected added impact load that arrives, and makes vehicle moment might occur and significantly transships phenomenon.Therefore,, investigate its actual load and be only suitablely, could reflect the actual loading situation of vehicle exactly for the automobile in travelling.Automobile seriously overloads, and not only directly influences vehicle service life and serious threat road traffic, bridge and personal safety.Actual load amount when therefore, accurately determining charging capacity and travelling is necessary.But now still do not have the technical equipment that can detect, show the actual load amount when travelling automatically,, be difficult in time find overloaded vehicle yet and accurately determine overload capacity so can't determine rational charging capacity.Can only weigh to determine the charging capacity of vehicle at present with truck scale,, therefore, can't realize whenever and wherever possible the lorry loading amount is weighed because truck scale is a kind of fixation means.Generally, during the lorry loading goods, only infer whether overload with the distortion situation of visual inspection leaf spring; Traffic safety administrative authority is during to vehicle inspection, also judges whether to overload with the distortion of leaf spring and what of overload capacity, and this can't accurately accomplish; The initial ten thousand kilometers strokes of 1-2 of new car are running-in periods, require the actual load amount not exceed 50% of nominal load capacity, and only relying on the distortion of observing leaf spring is to meet the requirements of; The maintenance of vehicle, residual life are estimated, are scrapped, foundation only be distance travelled or tenure of use, and do not investigate travel conditions, and comprising factors such as travel speed, actual load amount, time corresponding length, it is objective, true that the conclusion that therefore draws is difficult to accomplish.
Summary of the invention
The purpose first of the present invention: a kind of surveying instrument that is used for automobile is provided, it be with the actual load amount of automobile quantitatively numeral be shown in pilothouse, note down travel conditions key elements such as the speed of automobile, the actual load amount that comprises the additional dynamic load that causes because of the road surface is uneven, real-time clock signal in real time synchronously, the behaviour in service registering instrument in operating period automobile life-cycle is set up in compression after the digitizing, storage.Another object of the present invention is: a kind of dedicated query instrument that is used for reading and recording instrument data is provided, it is by the data in the extraction behaviour in service registering instrument and after decoding, realization to vehicle on a time period, the inquiry of element category such as load stepping, and can generate corresponding report when needed.
Automobile load numeral of the present invention shows and travel conditions registering instrument technical scheme is achieved in that
It has a load sensor signal generating means that can be fixed between back axle and the crossbeam, it mainly is made up of a load sensor and a fixed protection seat fixing and protective action, is used to obtain make the load sensor output signal because of the vehicle load amount causes the relative displacement that produces between back axle and the crossbeam;
An integrated system that can be installed in the pilothouse is arranged; It mainly is made up of a load signal processing circuit and vehicle speed signal treatment circuit; Load signal processing circuit wherein mainly is made up of filtering, amplifier and A/D (analog/digital) converter and microcomputer; The vehicle speed signal treatment circuit mainly is made up of vehicle speed signal treating apparatus and microcomputer; The signal output part of microcomputer is connected with load, the speed of a motor vehicle, real-time clock digital quantity display, compression set (scrambler), driving recorder and interface; The load electric signal that the load sensor sends, behind filtering, amplifier, under the synchronizing clock signals control that microcomputer internal clock driver sends, by A/D (analog/digital) converter the load electrical signal conversion is become a digital signal, and deposit microcomputer in, meanwhile, the electric signal that the vehicle speed measurement device sends, also the synchronizing clock signals control of being sent by microcomputer after the vehicle speed signal treating apparatus is handled, deposits microcomputer in the lump; Load digital signal and speed of a motor vehicle digital signal in the microcomputer carry out degree of deciding respectively; Send the digital quantity display to show through load, speed of a motor vehicle digital quantity signal and the real-time clock digital signal one tunnel of fixed degree in the described microcomputer; Meanwhile, another road digital quantity signal send compression set (scrambler), and computer documents fixedly behind the squeezing characters, is deposited in driving recorder; CPU in the microcomputer (central processing unit) transfers the data in the driving recorder, transfers out microcomputer by interface;
Of the present inventionly a kind ofly be used for extracting above-mentioned automobile load numeral when needed and show that the technical scheme with the inquiring instrument of travel conditions registering instrument data-signal is: it is an independent device, mainly accept treating apparatus by the data that comprise CPU, demoder and application software, keyboard is selected in classified inquiry, and display and printer are formed; Data are accepted two input ends for the treatment of apparatus and can be selected the interface of keyboard and microcomputer to be connected with classified inquiry, and two output terminals are connected with display and printer respectively; Data are accepted the compressed signal that the acceptance for the treatment of apparatus interface is taken out from driving recorder by the CPU in the microcomputer (central processing unit), behind decoder decode, select the instruction of keyboard input inquiry by classified inquiry, under the support of application software, form inquiry file, show printer prints by display.
Ultimate principle of the present invention and technique effect are:
Because railway carriage places on the crossbeam, crossbeam is connected with the leaf spring that is supported on back axle, during lade, the leaf spring pressurized that upwarps flattens gradually, be that crossbeam produces displacement with respect to back axle, relative position changes, and relative shift and vehicle load amount have relation one to one.When using such class sensor: the sensor (comprising load sensor and pressure transducer) that promptly measures the increment that crossbeam and back axle relative shift or position quantity change when causing the stressed change of sensor, its output signal produces, or use another kind of sensor: promptly directly measure the sensor (comprising displacement transducer, position and range sensor) of relative shift or position quantity, so can obtain the analog quantity of automobile load.With regard to the preferred embodiment that load sensor 11 is to use the load sensor 11 ' in the load sensor, (see Fig. 1,3,4), it is that compression spring is set on crossbeam, load sensor 11 ' is set on back axle, compression spring often contacts with load sensor 11 ', and certain pre compressed magnitude arranged, and crossbeam becomes the compression increment of compression spring with respect to the displacement of back axle, and spring force makes load sensor 11 ' produce output signal, through A/D conversion, scale, obtain the load of automobile.Situation during the working pressure sensor is identical during with the applied load sensor.Also can measure the displacement of crossbeam,, just can obtain the vehicle load amount through A/D conversion, scale with displacement transducer with respect to back axle; Can also determine the position relation of crossbeam with position and range sensor, through A/D conversion, scale, obtain the vehicle load amount by position quantity with respect to back axle.
For the vehicle that uses digital speedometer, speed of a motor vehicle digital signal is directly provided by digital speedometer; For other vehicle, can be separately the analog signal conversion of mechanical type speedometer be become speed of a motor vehicle digital signal.
Real-time clock signal is provided by corresponding integrated circuit in the microcomputer.
Applied load sensor 11 ' of the present invention measures in the preferred embodiment of automobile load (seeing Fig. 1,3,4), (nominal titre Q behind the compartment lade
n, and increase successively), between crossbeam 2 and the back axle 13 relative displacement takes place, distance L between the two
nDiminish, spring 7 pressurizeds shorten, and produce spring force f
n:
f
n＝c
1ΔL
n
C in the formula
1The stiffness coefficient of one spring 7, kgf/mm;
Δ L
n-charging capacity is Q
nThe time, the amount of being compressed of spring 7, mm.
The spring force f that spring 7 produces
nBe the power that load sensor 11 ' bears, the simulating signal of load sensor 11 ' output is q after A/D (analog/digital) conversion
n, q
nJust equal f
nSo, just can be with a series of output quantity q of load sensor 11 '
nScale is the load Q of vehicle correspondence
n
Automobile load numeral of the present invention shows and the travel conditions registering instrument is an instrument and equipment that has autonomous system of one's own, separate with the original electrical equipment of vehicle, circuit, instrument, the corresponding site that only needs during installation sensor, display to be fixed on vehicle gets final product, do not need to change structure, shape or the size of the original member of vehicle, therefore no matter to existing vehicle, still the new vehicle in the assembling process all is easy to realize; With the actual load amount of vehicle quantitatively numeral be shown in pilothouse, be convenient to human pilot and grasp charging capacity, verify when being convenient to the law enforcement of traffic safety administrative authority simultaneously; The travel conditions registering instrument receives only the data that can't delete or change that sensor measures among the present invention, the process encoder compresses, to keep the complete, continuous, true of data; After packed data in the travel conditions registering instrument is transferred to the inquiring instrument decoding, under the support of user software, can realize classified inquiry, generate corresponding report, the life-cycle behaviour in service data of vehicle are provided, so that long-term follow, verify the vehicle behaviour in service whenever and wherever possible, simultaneously for car insurance, maintenance, residual life are estimated, scrapped, reliability design provides basic data.
Description of drawings
Fig. 1 is load sensor signal generating means 1 and an installation site synoptic diagram thereof in the registering instrument of the present invention, and among the figure, load sensor 11 is a load sensor 11 ';
Fig. 2 is the basic block diagram of registering instrument of the present invention;
Fig. 3 is one embodiment of the present of invention: the basic block diagram when the vehicle speed measurement device 20 among Fig. 2 is angular displacement sensor 29 is applicable to the vehicle that the mechanical type speedometer has been installed;
Fig. 4 is another embodiment of the present invention: when the basic block diagram of the vehicle speed measurement device 20 among Fig. 2 when being digital speedometers 32, be applicable to the vehicle that digital speedometer has been installed;
Fig. 5 is integrated system is installed on pilothouse with integrated box 28 ' a synoptic diagram.
Fig. 6 is the inquiring instrument structural representation.
Embodiment
The present invention is further illustrated below in conjunction with drawings and Examples:
Shown in Fig. 1,2,3,5, be that automobile load numeral of the present invention shows and preferred embodiment of travel conditions registering instrument that wherein, load sensor 11 is a load sensor 11 ', vehicle speed measurement device 20 is an angular displacement sensor 29, and its concrete technical scheme is:
1), it has a load sensor signal generating means 1, can be fixed between back axle 13 and the crossbeam 2, form by load sensor 11 and fixed protection seat, load sensor 11 wherein is can measure crossbeam 2 to cause the stressed change of sensor with back axle 13 relative shifts or position quantity change, make the sensor of the increment of sensor output signal generation, the sensor of such increment is a load sensor, or pressure transducer, present embodiment is that load sensor 11 ' in the load sensor is (as Fig. 1,3, shown in 4), be installed on by in the seat of honour 6 and following 10 fixed protection seat of forming; The seat of honour 6 is that a tubular has end cover with following 10, on the two movable surface of contact O-ring seal 8 is arranged, and anti-sealing and dust etc. enter, and also can not establish O-ring seal; One pressure head 9 is arranged on the load sensor 11 ', and what make that the two is in contact condition all the time is the spring 7 with certain pre compressed magnitude; Connect one on the seat of honour 6 and have the electric resistance heater that can regulate temperature 3 that independent switch is controlled; Load sensor signal generating means 1 is used for obtaining causing that because of the vehicle load amount producing relative displacement between back axle 13 and the crossbeam 2 makes load sensor 11 ' output signal; The seat of honour 6 generally also is fixed on the crossbeam 2 with screw 5 behind the above pad 4 of lining, and following seat 10 linings are fixed on the back axle 13 with set collar 14, screw 15 with underlay 12 backs; Electric resistance heater 3 is made the bolt form and is fixed on the seat of honour 6, and has independently switch; Do not have heater element in the vehicle load quantity sensor signal generation apparatus 1 during work, so environment temperature can not exceed the maximum operating temperature (operating temperature range that load sensor 11 ' allows for-20-+100 ℃) of load sensor 11 ', not need cooling provision; Environment temperature as vehicle load amount transducing signal generating means 1 is low excessively, is lower than the minimum operating temperature that load sensor 11 ' allows, but 3 heating of starting resistance well heater;
2), an integrated system 28 is arranged, be installed in the pilothouse by an integrated box 28 '; This integrated system is made up of a load signal treatment circuit and vehicle speed signal treatment circuit; Load signal treatment circuit wherein is made up of filtering, amplifier 16 and A/D (analog/digital) converter 17 and microcomputer 22; Filtering, amplifier 16 output terminals also connect a comparison, on-off circuit 18, and this comparison, on-off circuit 18 are connected with load of machinery systems light signal display 19; The vehicle speed signal treatment circuit is made up of vehicle speed signal treating apparatus 21 and microcomputer 22; The signal output part of microcomputer 22 is connected with load, the speed of a motor vehicle, real-time clock digital quantity display 23, compression set (scrambler) 24, driving recorder 25 and interface 26; The load electric signal that load sensor 11 ' sends, behind filtering, amplifier 16, wherein one the tunnel under the synchronizing clock signals control that microcomputer 22 internal clock drivers send, and by A/D converter 17 the load electrical signal conversion is become a digital signal, and deposit microcomputer 22 in; Meanwhile, vehicle speed measurement device 20, be that the angular displacement sensor 29 that present embodiment (as shown in Figure 3) is installed on mechanical type speedometer final stage sends the corner electric signal, the also synchronizing clock signals control of sending by microcomputer 22, through vehicle speed signal treating apparatus 21, be the present embodiment filtering of (as shown in Figure 3), after amplifier 30 and A/D converter 31 are handled, deposit microcomputer 22 in the lump in, described processing is under the synchronizing clock signals control that microcomputer 22 sends, A/D converter 17 is sampled simultaneously, and speed of a motor vehicle analog signal conversion is a digital signal; Load digital signal and speed of a motor vehicle digital signal in the microcomputer 22 carry out degree of deciding respectively; Load, the speed of a motor vehicle and real-time clock digital quantity signal one tunnel in the described microcomputer 22 send digital quantity display 23 to show; Meanwhile, another road digital quantity signal send compression set (scrambler) 24 to compress; Because the load, the speed of a motor vehicle and the real-time clock signal that generate in microcomputer 22 are text and data file, belong to the computer documents class, compression set (scrambler) 24 adopts bitmap method (Bit Mapping) coding of sequence time sign indicating number category in the time encoding technology, computer documents fixedly behind the squeezing characters, is deposited in driving recorder 25; CPU in the microcomputer 22 (central processing unit) transfers the data in the driving recorder 25, by interface 26 outputs; Filtering, amplifier 16 and 30, A/D converter 17 and 31, microcomputer 22, load, the speed of a motor vehicle, real-time clock digital quantity display 23, compression set (scrambler) 24, driving recorder 25, interface 26, all be installed in the integrated box 28 ' of integrated system 28, system integration box 28 ' is installed in the pilothouse (see figure 5); Automobile load automatic monitoring display and the required power supply of travel conditions registering instrument each several part are provided by vehicle accumulator;
In the such scheme, the operating temperature range of load sensor 11 ' is-20～100 ℃, and the error that zero point drift and change of sensitivity cause is 0.45%R.O (R.O is load sensor 11 ' the specified output), and temperature control is changed to 0.02% indicating value/10 ℃; The A/D conversion accuracy is 0.1%, and spending precision surely is 0.5%; A/D converter 17 and 31 or the sample frequency scope of sampling apparatus 33 be 50-100 time/second; Compression set (scrambler) 24 is bitmap method (Bit Mapping) coding of the sequence time sign indicating number category in the time encoding technology.
Embodiment as shown in Figure 4 and previous embodiment difference are: described vehicle speed measurement device 20 is the digital speedometers 32 that are installed on the vehicle; Described vehicle speed signal treating apparatus 21 is sampling apparatuses 33, under the synchronizing clock signals control that microcomputer 22 internal clock drivers send, directly send microcomputer 22 by sampling apparatus 33 after digital speedometer 32 is gathered speed of a motor vehicle digital signal.
Other embodiment of registering instrument of the present invention is, load sensor 11 wherein is the sensors that can measure crossbeam 2 and back axle 13 relative shifts or position quantity, the sensor of such displacement or position quantity is displacement transducer or position and range sensor, is installed on mainly by in the seat of honour 6 and following 10 fixed protection seat of forming.If load sensor 11 self has protective cover, then only need holder.
Fig. 6 be of the present invention a kind of when needed can to above-mentioned automobile load numeral show with the travel conditions registering instrument in the embodiment of the inquiring instrument 27 inquired about of data-signal: it accepts treating apparatus 35 by the data that comprise CPU, demoder and application software, keyboard 34 is selected in classified inquiry, and display 36 and printer 37 are formed; Data are accepted two input ends for the treatment of apparatus 35 and can be selected the interface 26 of keyboard 34 and microcomputer 22 to be connected with classified inquiry, and two output terminals are connected with display 36 and printer 37 respectively; Data are accepted the compressed signal that treating apparatus 35 is taken out by the CPU the microcomputer 22 (central processing unit) from interface 26 acceptance from driving recorder 25, behind decoder decode, revert to computer literal presents and data file exactly, select the instruction of keyboard 34 input inquiries by classified inquiry again, under the support of application software, generate corresponding report, display 36 shows that printer 37 is printed; Inquiring instrument 27 is an autonomous device, can receive the signal in the driving recorder 25 that all vehicles install, but not be installed on the vehicle, need not carry with car, does not also need each car all to be equipped with.
Among Fig. 1, when vehicle is unloaded, spring 7 existing certain pre compressed magnitudes, therefore the output with vehicle loading preload sensor 11 ' is made as zero point, the influence that brings with preloads such as the precompression of eliminating spring 7 and railway carriages.
Below further be example, explain as follows the vehicle load amount error of indication with the preferred embodiment of using load sensor 11 ' monitor vehicle load:
Load sensor 11 ' technical indicator is:
Nonlinearity erron is 0.03%R.O. (R.O.-load sensor 11 ' the specified output, down together);
Hysteresis error is 0.02%R.O;
The zero point drift that temperature causes is 0.02%R.O./10 ℃;
Temperature control is changed to 0.02% indicating value/10 ℃; In the operating temperature range that load sensor allows (20-+100 ℃), if do not carry out temperature compensation, under extreme case, promptly-20 ℃ fixed degree ,+100 ℃ of uses, or+100 ℃ of fixed degree ,-20 ℃ of uses, the error that is caused by zero point drift and change of sensitivity is [(0.02%+0.02%) R.O./10 ℃] * 120 ℃=0.48%R.0.
General other technical indicator that requires to set is:
The A/D conversion accuracy is 0.1%;
Surely spending precision is 0.5%.
Therefore, during applied load sensor 11 ', vehicle load amount indicating value limiting error is:
±(0.03+0.02+0.48+0.1+0.5)％R.O.＝±1.13％R.O；
And square error is: ± 0.70%R.O.
Situation when using other sensor is similar therewith.This shows that as non-commercial metering, with the actual load amount of sensor detected vehicle, even use, its degree of accuracy remains enough under least favorable, the harshest situation.
Claims (10)
1, automobile load numeral shows and the travel conditions registering instrument, it is characterized in that it has:
The load sensor signal generating means (1) that can be fixed between back axle (13) and the crossbeam (2), it mainly is made up of load sensor (11) and fixed protection seat, is used for obtaining making load sensor (11) output signal because of the vehicle load amount causes the displacement that produces between back axle (13) and the crossbeam (2);
The integrated system (28) that can be installed in the pilothouse; It mainly is made up of a load signal processing circuit and vehicle speed signal treatment circuit; Load signal processing circuit wherein mainly is made up of filtering, amplifier (16) and A/D converter (17) and microcomputer (22); Filtering, amplifier (16) output terminal also connect a comparison, on-off circuit (18), and this comparison, on-off circuit (18) are connected with load of machinery systems light signal display (19); The vehicle speed signal treatment circuit mainly is made up of vehicle speed signal treating apparatus (21) and microcomputer (22); The signal output part of microcomputer (22) is connected with load, the speed of a motor vehicle, real-time clock digital quantity display (23), compression set (scrambler) (24), driving recorder (25) and interface (26); The load electric signal that load sensor (11) sends, wherein one the tunnel under the synchronizing clock signals control that microcomputer (22) internal clock driver sends, by A/D (analog/digital) converter (17) the load electrical signal conversion is become a digital signal, and deposit microcomputer (22) in; Meanwhile, the electric signal that vehicle speed measurement device (20) sends, also the synchronizing clock signals control of being sent by microcomputer (22) after vehicle speed signal treating apparatus (21) is handled, deposits microcomputer (22) in the lump; Load digital signal and speed of a motor vehicle digital signal in the microcomputer (22) carry out degree of deciding respectively; Load, the speed of a motor vehicle and real-time clock signal one tunnel in the described microcomputer (22) send digital quantity display (23) to show; Meanwhile, another road digital quantity signal send compression set (scrambler) (24), and computer documents fixedly behind the squeezing characters, is deposited in driving recorder (25); CPU (central processing unit) in the microcomputer (22) transfers the data in the driving recorder (25), transfers out microcomputer (22) by interface (26).
2, registering instrument according to claim 1, it is characterized in that, load sensor (11) is can measure crossbeam (2) to cause the stressed change of sensor with back axle (13) relative shift or position quantity change, make the sensor of the increment of sensor output signal generation, the sensor of such increment is a load sensor, or pressure transducer; Be installed on mainly by in the seat of honour (6) and following the fixed protection seat that (10) are formed.
3, registering instrument according to claim 2 is characterized in that, load sensor (11) is the load sensor (11 ') that is selected from load sensor one class, is installed on mainly by in the seat of honour (6) and following the fixed protection seat that (10) are formed; On the seat of honour (6) and following (10) active face O-ring seal (8) can be arranged; One pressure head (9) is arranged on this load sensor (11 '), and what make that the two is in contact condition all the time is one to have the spring (7) of certain pre compressed magnitude; The electric resistance heater that can regulate temperature (3) that connection one has independent switch control is gone up at the seat of honour (6).
4, registering instrument according to claim 1, it is characterized in that, load sensor (11) is for directly measuring the sensor of crossbeam (2) and back axle (13) relative shift or position quantity, the sensor of such displacement or position quantity is displacement transducer or position and range sensor, is installed on mainly by in the seat of honour (6) and following the fixed protection seat that (10) are formed.
5, registering instrument according to claim 1 is characterized in that, described vehicle speed measurement device (20) is the angular displacement sensor (29) that is installed on mechanical type speedometer final stage; Described vehicle speed signal treating apparatus (21) is made up of filtering, amplifier (30), A/D (analog/digital) converter (31); Angular displacement sensor (29) sends the corner electric signal, behind filtering, amplifier (30), under the synchronizing clock signals control that microcomputer (22) sends, with load signal processing circuit synchronized sampling, is a digital signal by A/D (analog/digital) converter (31) with the corner electrical signal conversion, deposits microcomputer (22) in the lump in; Load digital signal and speed of a motor vehicle digital signal in the microcomputer (22) carry out degree of deciding respectively.
6, registering instrument according to claim 1 is characterized in that, described vehicle speed measurement device (20) is one to be installed on the digital speedometer (32) on the vehicle; Vehicle speed signal treating apparatus (21) is sampling apparatus (33), under the synchronizing clock signals control that microcomputer (22) internal clock driver sends, directly after gathering speed of a motor vehicle digital signal, digital speedometer (32) send microcomputer (22) by sampling apparatus (33).
7, registering instrument according to claim 3, it is characterized in that, the operating temperature range of load sensor (11 ') is-20～100 ℃, the error that zero point drift and change of sensitivity cause be 0.45%R.O wherein R.O be the specified output of load sensor, temperature control is changed to 0.02% indicating value/10 ℃.
According to the described registering instrument of arbitrary claim among the claim 1-7, it is characterized in that 8, the A/D converter precision is 0.1%, spending precision surely is 0.5%
According to the described registering instrument of arbitrary claim among the claim 1-7, it is characterized in that 9, the sample frequency scope of A/D converter (17) and (31) or sampling apparatus (33) is 50-100 time/second.
10, a kind of inquiring instrument that is applicable to claim 1 described automobile load numeral demonstration and travel conditions registering instrument, it is characterized in that, it is an autonomous device, mainly accept treating apparatus (35) by the data that comprise CPU, demoder and application software, keyboard (34) is selected in classified inquiry, and display (36) and printer (37) are formed; Data are accepted two input ends for the treatment of apparatus (35) and can be selected the interface (26) of keyboard (34) and little shape computing machine (22) to be connected with classified inquiry, and two output terminals are connected with display (36) and printer (37) respectively; Data are accepted treating apparatus (35) and are accepted the compressed signal that is taken out by the CPU (central processing unit) the microcomputer (22) and inquire the query statement of selecting keyboard (34) to send by classification from driving recorder (25) from interface (26).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03118610 CN1204379C (en) | 2003-02-18 | 2003-02-18 | Car loading digital display and running state recorder and query instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 03118610 CN1204379C (en) | 2003-02-18 | 2003-02-18 | Car loading digital display and running state recorder and query instrument |
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| Publication Number | Publication Date |
|---|---|
| CN1434275A true CN1434275A (en) | 2003-08-06 |
| CN1204379C CN1204379C (en) | 2005-06-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 03118610 Expired - Fee Related CN1204379C (en) | 2003-02-18 | 2003-02-18 | Car loading digital display and running state recorder and query instrument |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107209045A (en) * | 2015-01-20 | 2017-09-26 | 金宙科技有限公司 | Vehicle load metering device |
-
2003
- 2003-02-18 CN CN 03118610 patent/CN1204379C/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107209045A (en) * | 2015-01-20 | 2017-09-26 | 金宙科技有限公司 | Vehicle load metering device |
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| CN1204379C (en) | 2005-06-01 |
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