CN203422227U - Detection instrument of agricultural vehicle braking performance - Google Patents
Detection instrument of agricultural vehicle braking performance Download PDFInfo
- Publication number
- CN203422227U CN203422227U CN201320334657.2U CN201320334657U CN203422227U CN 203422227 U CN203422227 U CN 203422227U CN 201320334657 U CN201320334657 U CN 201320334657U CN 203422227 U CN203422227 U CN 203422227U
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- China
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- agricultural vehicle
- processor
- generating laser
- detection case
- data processor
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Abstract
The utility model relates to a detection instrument of an agricultural vehicle performance, and in particular relates to a detection instrument of an agricultural vehicle braking performance. The detection instrument of the agricultural vehicle braking performance comprises a bracket and a detection box which is installed on the bracket; the detection box is internally provided with a laser transmitter, a laser receiver, and a micro data processor which is connected with the laser transmitter; the detection box is also internally provided with a timing processor; the data input end of the timing processor is connected with the laser transmitter and the laser receiver; the data output end of the timing processor is connected with the micro data processor; the data input end of the micro data processor is connected with an operation panel; and the output end of the micro data processor is also connected with a display device. The high detection efficiency and the high detection accuracy are realized.
Description
Technical field
the utility model relates to a kind of detecting instrument of agricultural vehicle aspect of performance.
Background technology
the detection of agricultural vehicle aspect of performance, comprise braking, axle weight, rotating speed, power etc., wherein the quality of braking ability is a more crucial index, and in vehicle braking performances context of detection, also has many instrument and equipments, the method of check has road examination method and stand method, its Road examination method is rapid and convenient more, uses commonplacely, according to GB7258-1997, stipulates, road examination method mainly detects automobile brake perfrmance on road, and the parameter of its detection has braking distance, the average retardation rate fully sending, brake pedal force, the brake coordination time etc., as the publication number portable braking force tester for car that is 1710393, it has two-way reinforcing bar, two-way reinforcing bar is connected to rigidity force transmission shaft, rigidity force transmission shaft upper end is fixed with instrument panel, lower end is connected with wheel hub cover plate, in wheel hub cover plate, be distributed with sipes and narrow groove, in groove, be provided with sliding sleeve, thereby sliding sleeve passes narrow groove by its lug by bolt is connected the location of realizing optional position with wheel hub cover plate, test effect is better, range of application is larger, but, need to carry out in the position of automotive hub the location and installation of parts, not only operation steps increases, the instability of installing also may cause test result deviation excessive, also some brake performance detector generally using is sensor installation on vehicle body mostly, operation and maintenance is more difficult, the Chinese utility model patent that is 202420870U as notification number discloses a kind of automobile portable brake performance tester, it comprises single machine unit and detecting signal unit, detecting signal unit provides detection signal for single machine unit, detecting signal unit comprises separate acceleration transducer, pedal force sensor and foot pedal sensor, this kind of tester and motor vehicles without any hard connection of electric and machinery, so when braking starts to be judged according to the output of sensor by software, thereby the collection of specified data and storage, facilitate data processing, but this kind of testing tool sensitivity requires high, and the refresh rate of acceleration transducer is high not enough, higher also just can only reach HZ up to a hundred, also just the data volume of representative sampling is on the low side, analog simulation degree is high not enough, the data precision detecting need to improve, thus, existing testing tool is in the face of batch detection or accurate detection, efficiency is lower, measuring accuracy is on the low side, and while testing on field and other places because many restriction practical operations such as environment get up there will be more problem, can not meet the agricultural vehicle of various in rural area, the ground tests such as field.
Utility model content
the utility model is the shortcoming of solution prior art, and the agricultural vehicle brake performance detector that a kind of detection efficiency is high and precision is high device is provided.
the technical solution of the utility model is: a kind of agricultural vehicle brake performance detector device, comprise support and rack-mount detection case, in detection case, be provided with generating laser, laser pickoff and the miniature data processor being connected with generating laser, in detection case, be also provided with timing processor, the data input pin of timing processor is connected with laser pickoff with generating laser, the data output end of timing processor is connected with miniature data processor, the data input pin of miniature data processor is connected with guidance panel, the output terminal of miniature data processor is also connected with display device.
compare with the detecting instrument equipment of existing vehicle, this device volume is smaller, be easy to carry, use also very flexible, only need this device just can on field and other places, detect efficiently different automobile types, large batch of agricultural vehicle, and do not need installation and measuring component on tested vehicle; On the other hand, feature due to agricultural vehicle itself, build is relatively wide, weight is relatively heavier, travel speed is slow, and braking procedure is than very fast, so adopt the detection method of laser pulse formula, the error producing is very little, can guarantee its degree of accuracy, and can be rapidly by display device, be presented in face of testing staff intuitively, also facilitate record.
as preferably, detection case is provided with for adjusting the contraposition calibrating device of detecting instrument position.Because the detection of agricultural vehicle often appears at rural area or field, add that vehicle own is wider, affect testing staff's visual angle, when pick-up unit is located, the direction to the car that is not easy to realize Laser emission direction and agricultural vehicle remains essentially in same direction, therefore be easy to occur deflection, cause the larger error that detects data, the effect of contraposition calibrating device just can effectively reduce detection error.
as preferably, contraposition calibrating device has Image-forming instrument, and Image-forming instrument is vertical with the transmit direction of generating laser with sensitization eyeglass and its minute surface.On Image-forming instrument, present be the orthographic view of agricultural vehicle time, just can easily judge whether that contraposition is accurate.
as preferably, support and detection case are rotationally connected.Be convenient to the accurate contraposition of detection case, need not carry out position adjustment, handled easily to whole detecting instrument again.
as preferably, generating laser is high frequency lasers transmitter.Because agricultural vehicle speed is slow, and braking procedure is than comparatively fast, if to its braking procedure simulation, need very many data collection points, therefore need to could measure more accurately by the generating laser of high frequency.
as preferably, support is provided with adjustable feet.Be convenient to the position adjustments of whole detecting instrument, to adapt to different environment and vehicle.
in sum, the utlity model has following advantage:
1, adopt small electronic equipment, volume is little, be easy to carry, can meet different automobile types, large batch of agricultural vehicle in the wild, the ground such as rural area carries out the test of high-efficiency high-accuracy, can also present very intuitively in addition whole braking procedure and various data, is also convenient to record;
2, simple in structure, with low cost.
Accompanying drawing explanation
fig. 1 is the perspective view of the utility model embodiment mono-;
fig. 2 is the inside connection layout of detection case in the utility model embodiment mono-;
fig. 3 is the perspective view of the utility model embodiment bis-.
in figure, 1, support, 2, detection case, 21, generating laser, 22, laser pickoff, 3, miniature data processor, 4, timing processor, 31, guidance panel, 32, display device, 5, contraposition calibrating device, 51, sensitization eyeglass.
Embodiment
following specific embodiment is only to explanation of the present utility model; it is not to restriction of the present utility model; those skilled in the art can make to the present embodiment the modification that there is no creative contribution as required after reading this instructions, but as long as within the scope of claim of the present utility model, are all subject to the protection of Patent Law.
embodiment mono-:
as Fig. 1, shown in 2, a kind of agricultural vehicle brake performance detector device, comprise support 1 and be arranged on the detection case 2 on support 1, in detection case 2, be provided with generating laser 21, laser pickoff 22 and the miniature data processor 3 being connected with generating laser 21, in detection case 2, be also provided with timing processor 4, the data input pin of timing processor 4 is connected with laser pickoff 22 with generating laser 21, the data output end of timing processor 4 is connected with miniature data processor 3, the data input pin of miniature data processor 3 is connected with guidance panel 31, the output terminal of miniature data processor 3 is also connected with display device 32.Support 1 is rotationally connected with detection case 2.Generating laser 21 is high frequency lasers transmitter.Support 1 is provided with adjustable feet.Generating laser 21 uses as high-frequency signal transmitter, laser pickoff 22 uses as receiver, timing processor 4 completes the operations such as all timing for the time, record as a timekeeping system, miniature data processor 3 is a cpu, comprises computing system and control system.
the detection method of this instrument: select more smooth straight line section as road examination section, tested agricultural vehicle is first parked in road examination section, in Shi Duan one end, road, headstock or the tailstock over against tested agricultural vehicle are settled this instrument, when tested agricultural vehicle and generating laser 21 transmit directions in the same way or reverse while starting to travel, open generating laser 21 and laser pickoff 22 work, constantly at the uniform velocity travelling, braking is slided until the tested agricultural vehicle emission of high frequency signals that stops travelling, by laser pickoff 22, receive the signal that tested agricultural vehicle is reflected back simultaneously, and the reflected signal that laser pickoff 22 is received is constantly sent to timing processor 4, when generating laser 21 sends first pulse signal, just start to carry out timing by timekeeping system, and each pulse signal record as a minimum signal traveling time from being transmitted into receive, to obtain Δ t
1
, Δ t
2
Δ t
n
, the miniature data processor 3 that can be connected with by timekeeping system calculates the travel distance s of each pulse signal
1
, s
2
s
n
, s
n
=C* Δ t
n
, C is the speed of signal itself, and can pass through each signal travel distance s
1
, s
2
s
n
calculate the gauged distance value D under each signaling point of agricultural vehicle
1
, D
2
d
n
, D
n
=s
n
/ 2, the burst length of supposing again generating laser 21 is T, and the interval time of each signal, is also each gauged distance value D certainly
1
, D
2
d
n
interval time, can calculate the standard speed v under each signaling point of agricultural vehicle
1
, v
2
v
n
, v
n
=│ D
n
-D
n-1
│/T, records as the instantaneous velocity of agricultural vehicle, computing system carries out graphic modeling, and figure and data are shown by display device 32, before can seeing an agricultural vehicle braking, arrive after braking, until the curve of the velocity variations of the whole process stopping, be driving process and moderating process, by to the controlling of miniature data processor 3, choose needed data, comprise from v
1
, v
2
v
n
choose initial speed of braking v, gauged distance value D
1
, D
2
d
n
and the corresponding time etc., carry out computing again, according to GB7358-1997, the computing formula of the average retardation rate fully sending (MFDD) is as follows:
MFDD=（v
b
2
-?v
e
2
）/[25.92（s
e
-?s
b
）]；
in formula, v
b
for the 0.8v test speed of a motor vehicle, v
e
be the 0.1 v test speed of a motor vehicle, S
b
for the test speed of a motor vehicle is from v to v
b
operating range, S
e
for the test speed of a motor vehicle is from v to v
e
operating range, pass through v
b
and v
e
can convert and obtain the time point corresponding to this speed, just can obtain the gauged distance value of this correspondence time, and S
b
and S
e
be respectively v gauged distance value and the v of corresponding time
b
gauged distance value and the v of corresponding time of the difference of the gauged distance value of corresponding time and v
e
the gauged distance value of corresponding time poor, the physical parameter by input agricultural vehicle, can also be converted into damping force F, F=MFDD*m-f, m is agricultural vehicle quality, f be the constant resistance in the external world.
embodiment bis-:
as shown in Figure 3, the difference of itself and embodiment 1 is: in detecting instrument, detection case 2 is provided with for adjusting the contraposition calibrating device 5 of detecting instrument position, contraposition calibrating device 5 has Image-forming instrument, and Image-forming instrument is vertical with the transmit direction of generating laser 21 with sensitization eyeglass 51 and its minute surface.
detect early stage, when testing staff lays detecting instrument, by the position of contraposition calibrating device 5 calibration detecting instruments, what make to present on Image-forming instrument is the orthographic view of agricultural vehicle, the laser direction vector sending with generating laser 21 in assurance detecting instrument and the direction vector conllinear travelling of tested agricultural vehicle, improve accuracy of detection.
Claims (6)
1. an agricultural vehicle brake performance detector device, it is characterized in that: comprise support (1) and be arranged on the detection case (2) on described support (1), in described detection case (2), be provided with generating laser (21), laser pickoff (22) and the miniature data processor (3) being connected with described generating laser (21), in described detection case (2), be also provided with timing processor (4), the data input pin of described timing processor (4) is connected with described laser pickoff (22) with described generating laser (21), the data output end of described timing processor (4) is connected with described miniature data processor (3), the data input pin of described miniature data processor (3) is connected with guidance panel (31), the output terminal of described miniature data processor (3) is also connected with display device (32).
2. a kind of agricultural vehicle brake performance detector device according to claim 1, is characterized in that: described detection case (2) is provided with for adjusting the contraposition calibrating device (5) of detecting instrument position.
3. a kind of agricultural vehicle brake performance detector device according to claim 2, it is characterized in that: described contraposition calibrating device (5) has Image-forming instrument, Image-forming instrument is vertical with the transmit direction of described generating laser (21) with sensitization eyeglass (51) and its minute surface.
4. a kind of agricultural vehicle brake performance detector device according to claim 3, is characterized in that: described support (1) is rotationally connected with described detection case (2).
5. according to a kind of agricultural vehicle brake performance detector device described in claim 1 or 2 or 3 or 4, it is characterized in that: described generating laser (21) is high frequency lasers transmitter.
6. according to a kind of agricultural vehicle brake performance detector device described in claim 1 or 2 or 3 or 4, it is characterized in that: described support (1) is provided with adjustable feet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320334657.2U CN203422227U (en) | 2013-06-09 | 2013-06-09 | Detection instrument of agricultural vehicle braking performance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320334657.2U CN203422227U (en) | 2013-06-09 | 2013-06-09 | Detection instrument of agricultural vehicle braking performance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203422227U true CN203422227U (en) | 2014-02-05 |
Family
ID=50021322
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320334657.2U Expired - Fee Related CN203422227U (en) | 2013-06-09 | 2013-06-09 | Detection instrument of agricultural vehicle braking performance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203422227U (en) |
-
2013
- 2013-06-09 CN CN201320334657.2U patent/CN203422227U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140205 Termination date: 20180609 |