CN105938034A - Flat plate braking-based lateral force testing device and method - Google Patents
Flat plate braking-based lateral force testing device and method Download PDFInfo
- Publication number
- CN105938034A CN105938034A CN201610517688.XA CN201610517688A CN105938034A CN 105938034 A CN105938034 A CN 105938034A CN 201610517688 A CN201610517688 A CN 201610517688A CN 105938034 A CN105938034 A CN 105938034A
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- force
- braking
- brake
- vehicle
- lateral force
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/28—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for testing brakes
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L5/00—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes
- G01L5/16—Apparatus for, or methods of, measuring force, work, mechanical power, or torque, specially adapted for specific purposes for measuring several components of force
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Force Measurement Appropriate To Specific Purposes (AREA)
Abstract
The invention relates to a flat plate braking-based lateral force testing device and a flat plate braking-based lateral force testing method. The device comprises a braking force and lateral force testing device, a data acquisition and processing system and a control system. With the device of the invention adopted, a braking force and a lateral force in an emergency braking process of an automobile can be measured in real time, tendency to deviation, sideslip and rollover is analyzed and evaluated, and the braking performance of the automobile can be detected more accurately, and the stability of the automobile in braking can be reasonably evaluated. The device of the invention can be widely applied to an automobile safety inspection station and is of great practical significance for safety driving control of the automobile.
Description
Technical field
The present invention is belonging to side force test device and method based on flat board braking, is by surveying in real time in braking at car emergency
Amount brake force and side force, assay generation sideslip, the trend breakked away and turn on one's side, it is achieved more accurate to vehicle braking performances
Detection and rational evaluation to intact stability.
Background technology
Flat plate type brake check-out console be utilize motor vehicles low speed to reach plate platform after suddenly braking time the inertia force that produces to detect system
The dynamic type brake tester of dynamic usefulness, it can simulated roadway automobile real road braking procedure, can effecting reaction automobile because of center of gravity
The dynamic brake power change moved forward and produce, the stressing conditions of vehicle is the most consistent with when travelling on road.Therefore its detection knot
Fruit more can be correct reflection vehicle truth when travelling on road.
In the case of side force is disturbed, automobile can occur sideslip when braking, break away and turn on one's side.At detection automobile brake perfrmance
Time can measure brake force and side force, assay generation sideslip, the trend breakked away and turn on one's side the most in real time, it is achieved
Vehicle braking performances is detected more accurately and stability during automobile brake is made rational evaluation, the security row to automobile
Sail control and there is realistic meaning.
Summary of the invention
Present invention is primarily aimed at provide a kind of can car emergency brake in quickly and accurately detect side force based on
The side force test device and method of flat board braking, it is achieved vehicle braking performances is detected more accurately and during to automobile brake
Stability make rational evaluation.
The above-mentioned purpose of the present invention is achieved through the following technical solutions, and accompanying drawings is as follows:
A kind of lateral force test device based on flat board braking, including brake force and lateral force test device, data acquisition process
System and control system, described brake force and lateral force test device include braking platen 3, base frame 4, spacing fore-set
10, correlation photoswitch 2, axle weight sensor 8, braking force sensor 6, lateral force sensors 5, braking force sensor top
Post 7 and lateral force sensors fore-set 9, described braking platen 3 is supported by following backboard and base frame 4, and described axle retransmits
Sensor 8 is contained in the lower section of braking platen 3, and described braking force sensor 6 is contained in the left and right sides each of every piece of braking platen 3 front end
Individual, described lateral force sensors 5 holds each one before and after being contained in every piece of braking platen 3 both sides, described correlation photoswitch 2
It is contained in the both sides in the middle part of before and after two blocks braking platen 3.
Described braking platen 3 is 4 pieces, and the attachment coefficient in braking platen 3 plate face is more than 0.7；Described braking force sensor 6
And should retain between braking force sensor fore-set 7 and between lateral force sensors 5 and lateral force sensors fore-set 9
The gap of 0.2mm 0.3mm.
The coverage of described correlation photoswitch 2 is between 3500mm 4500mm, and it launches reception light should be vertical
In driving centrage and be parallel to ground.
A kind of for above-mentioned side force method of testing based on flat board braking, including step in detail below:
Gap between sensor and sensor fore-set in brake force and lateral force test device is adjusted；Correlation photoswitch
2 align；
Equipment zeroing in data acquisition processing system, gathers brake force and side force signal；
Before vehicle enters detection place, brake force now and side force can be set to zero by data acquisition processing system；When
After vehicle enters detection place, dot matrix screen 21 points out vehicle to sail the system of plate brake stage into the speed of 5 10km/h per hour
Dynamic platen 3；
Keeping straight on when vehicle and sail into, front-wheel, when correlation photoswitch 2, causes the change in voltage of correlation photoswitch 2,
This voltage change signal is received by industrial computer 22 through digital data acquisition card 19, now dot matrix screen (21) prompting vehicle brake, work
Control machine 22 is again by data acquisition processing system, the record now dynamic brake force of vehicle and side on plate brake stage plate 3
Xiang Li；In car emergency braking procedure, control system obtains brake force and side force in real time, and to Analysis of test results, carries out
Estimation of stability.As shown in Figure 6, evaluation methodology is: ifAutomobile will break away, wherein FyFor
Side force is made a concerted effort, and F is that brake force is made a concerted effort, FCloseFor adhesive force；IfAutomobile will be turned on one's side, its
Middle hg is centre of gravity of vehicle height, and mg is complete vehicle quality, and B is automobile wheel track.
After car braking is totally stationary, the display interfaces of industrial computer 22 there will be vehicle right and left front wheel brake power, left and right
The side force of rear-wheel braking force and each wheel changes over the curve of relation；Detection terminates the brake force of vehicle and lateral
Power changes over the curve of relation and also can preserve in industrial computer 22 hard disk.
The technique effect of the present invention:
The present invention measures brake force and side force when detecting vehicle braking performances on plate brake stage in real time.Can simulate
Road automobile real road braking procedure, can the dynamic brake power that produces and the change of side force because center of gravity reach of effecting reaction automobile
Changing, the stressing conditions of vehicle is completely the same with when travelling on road.Therefore the reflection vehicle that its testing result more can be correct is in road
Truth when travelling on road.
The present invention is to automobile emergent brake by brake force and lateral force test device, data acquisition processing system and control system
During the real-time measurement of brake force and side force signal, efficient and accurate.
The trend that the present invention can evaluate automobile generation sideslip according to the Analysis of Side Force in braking procedure, break away and turn on one's side, more
Stability when detecting the braking ability of automobile accurately and evaluate automobile brake, to the repair and maintenance of automobile and safe driving proposition section
Learn rational suggestion.
The inventive method is simple to operate, it is easy to safeguards, can be conveniently used in automobile safety testing station, and can be effectively
Examinations.
Accompanying drawing explanation
The side force test structure drawing of device that Fig. 1 brakes based on flat board
Fig. 2 plate brake stage structure chart
Fig. 3 sensor roof pillar configuration figure
Fig. 4 lateral force sensors structure chart
Fig. 5 data collecting system schematic diagram
Fig. 6 Motor Vehicle Braking Procedure force diagram
In figure: 1-industrial computer rack
2-correlation photoswitch
3-braking platen
4-base frame
5-lateral force sensors
6-braking force sensor
7-braking force sensor fore-set
8-axle weight sensor
9-lateral force sensors fore-set
10-spacing fore-set
11-lateral force sensors fore-set pedestal
12-fore-set
13-floating ball
14-flange end cap
15-sensor firm banking
16-lateral force sensors
17-fixing bolt
18-analog acquisition card
19-digital data acquisition card
20-photoelectric switching signal
21-dot matrix screen
22-industrial computer
23-analog signals amplifies patch panel
Fy-side force is made a concerted effort
F-brake force is made a concerted effort
FClose-adhesive force
Hg-height of C.G.
B-automobile wheel track
Detailed description of the invention
Illustrated embodiment further describes the concrete device embodiments of the present invention below in conjunction with the accompanying drawings.
For ease of experiment, herein as a example by compact car, carry out analysis and the experiment being correlated with.
Side force test device and method based on flat board braking, at brake force and lateral force test device, data acquisition
Reason system and control system:
Include braking platen 3, base frame 4, spacing top refering to brake force described in Fig. 1, Fig. 2 and lateral force test device
Post 10, correlation photoswitch 2, axle weight sensor 8, braking force sensor 6, lateral force sensors 5, brake force sense
Device fore-set 7, lateral force sensors fore-set 9, except the overall width of compact car is typically not over 2.1m special purpose vehicle, but in view of car
The deviation travelled, two pieces of braking width of platens 3 and controlling at about 2700mm.And the wheelbase of compact car is the most all concentrated
2340mm (Cherry QQ) 3150mm (benz E level lengthens), add that braking distance (is 5 10km/h in speed
In the case of brake, braking distance is typically not over 1 1.5m), design braking platen 3 length should reach 4.7m,
This device designs every piece of braking a length of 4500mm of platen, and the middle platen fore-and-aft clearance also having 440mm, this just makes reality
Length, close to 9.5m, substantially meets the use of various vehicle.Braking platen 3 plate face uses the adhesive composite materials of special process
Layer, is effectively improved the attachment coefficient (attachment coefficient should reach more than 0.7) in plate face, thus can increase brake efficiency, reduces
Because surface of tyre has the impact on braking effect of the factor such as water or clog snow.Braking platen 3 should be solid and reliable, have below backboard and
Base frame 4 supports.Every piece of braking platen 3 front end should be provided with two braking force sensor 6 (along about platen center line symmetry
Each one), measurement maximum is 4000N.Braking force sensor 6 one side is connected (both it with braking force sensor fore-set 7
Between should leave the gap of 0.2mm 0.3mm), another side is connected with fixing bolt 17 with base frame 4.Every piece of braking
The left and right sides of platen 3 is respectively provided with two lateral force sensors 5, lateral force sensors 5 one side and lateral force sensors fore-set 9
Connecting (should leave the gap of 0.2mm 0.3mm between the two), another side is with base frame 4 with fixing bolt 17 even
Connecing, greatest measurement is also 4000N.
Refering to Fig. 5, described data acquisition processing system includes that analog acquisition card 18, digital data acquisition card 19, light are established by cable
OFF signal 20, dot matrix screen 21, industrial computer 22 and analog signals amplify patch panel 23.Dot matrix screen 21 of the present invention has been selected same
The 6 word lattice screens that help show, and the communication port of display screen is designed to 485 communication serial ports patterns, so can effectively avoid signal
Interference.In order to reach higher effective utilization, having selected the industrial computer 22 that function is more, its parameter is: CPU Duo double-core
2.4G, internal memory 2G, hard disk 500G, this machine is per se with a VGA display interface device, netting twine mouth, a mouse button
Dish connection jaws, two USB interface, two 232 interfaces, the interface (accounting for 3 ISA slots) carried except itself, also 5
ISA slot and 4 PCI slot are standby.Digital data acquisition card 19 selects Bei Jingkang to open up the IPC5375I/O of industrial computer company
Plate, analog acquisition card 18 selects Bei Jingkang to open up the IPC5488 plate of industrial computer company.Brake force in system and lateral
Force transducer is analog signals, and output is between 0 10mV, according to the signal input requirements of analog acquisition card 18,
Needing to install signal processing module, the signal processing module that the present invention selects is that Bei Jingkang opens up the production of industrial computer company
CMB-5464D pattern analog quantity signal amplifies patch panel 23.Power supply selects the Great Wall power supply that Shenzhen produces.At this data acquisition
Reason system Real-time Collection brake force, side force signal and correlation photoelectric switching signal 20 are relevant by dot matrix screen 21 display
Data and order, and carry out corresponding computing by the internal algorithm arranged of its program.
The inventive method comprises the following steps:
Gap between sensor and sensor fore-set in brake force and lateral force test device is adjusted；Correlation photoswitch
2 align.
Equipment zeroing in data acquisition processing system, gathers brake force and side force signal.
Before vehicle enters detection place, brake force now and side force can be set to zero by data acquisition processing system；When
After vehicle enters detection place, dot matrix screen 21 points out vehicle to sail the system of plate brake stage into the speed of 5 10km/h per hour
Dynamic platen 3；Keeping straight on when vehicle and sail into, front-wheel, when correlation photoswitch 2, causes the voltage of correlation photoswitch 2
Change, this voltage change signal is received by industrial computer 22 through digital data acquisition card 19, and now dot matrix screen 21 points out vehicle to stop
Car, industrial computer 22 is again by data acquisition processing system, the record now dynamic brake force of vehicle on plate brake stage plate 3
And side force.
In car emergency braking procedure, control system obtains brake force and side force in real time, and to Analysis of test results, carries out steady
Qualitative evaluation.As shown in Figure 6, evaluation methodology is: ifAutomobile will break away, wherein FyFor side
Making a concerted effort to power, F is that brake force is made a concerted effort, FCloseFor adhesive force；IfAutomobile will be turned on one's side, wherein hg
For centre of gravity of vehicle height, mg is complete vehicle quality, and B is automobile wheel track.
After car braking is totally stationary, the display interfaces of industrial computer 22 there will be vehicle right and left front wheel brake power, left and right
The side force of rear-wheel braking force and each wheel changes over the curve of relation；Detection terminates the brake force of vehicle and lateral
Power changes over the curve of relation and also can preserve in industrial computer 22 hard disk.
Claims (3)
1. a lateral force test device based on flat board braking, including brake force and lateral force test device, data acquisition processing system and control system, it is characterised in that:
Described brake force and lateral force test device include braking platen (3), base frame (4), spacing fore-set (10), correlation photoswitch (2), axle weight sensor (8), braking force sensor (6), lateral force sensors (5), braking force sensor fore-set (7) and lateral force sensors fore-set (9), described braking platen (3) is supported by following backboard and base frame (4), described axle weight sensor (8) is contained in the lower section of braking platen (3), described braking force sensor (6) is contained in the left and right sides of every piece of braking platen (3) front end, described lateral force sensors (5) is held before and after being contained in every piece of braking platen (3) both sides, described correlation photoswitch (2) is contained in the both sides at before and after two pieces braking platen (3) middle part.
A kind of lateral force test device based on flat board braking the most according to claim 1, it is characterised in that described braking platen (3) is 4 pieces, and the attachment coefficient in braking platen (3) plate face is more than 0.7；The gap of 0.2mm 0.3mm between described braking force sensor (6) and braking force sensor fore-set (7) and should be retained between lateral force sensors (5) and lateral force sensors fore-set (9).
3. for a kind of based on flat board braking the side force method of testing described in claim 1 or 2, including step in detail below:
Step one, adjusts gap between sensor and sensor fore-set in brake force and lateral force test device；Correlation photoswitch (2) aligns；
Step 2, the equipment zeroing in data acquisition processing system, gather brake force and side force signal；
Step 3, before vehicle enters detection place, brake force now and side force can be set to zero by data acquisition processing system；After vehicle enters detection place, dot matrix screen (21) prompting vehicle sails the braking platen (3) of plate brake stage into the speed of 5 10km/h per hour；
Step 4, keep straight on when vehicle and sail into, front-wheel is when correlation photoswitch (2), cause the change in voltage of correlation photoswitch (2), this voltage change signal is received by industrial computer (22) through digital data acquisition card (19), now dot matrix screen (21) prompting vehicle brake, industrial computer (22) is again by data acquisition processing system, and record is now in the upper dynamic brake force of vehicle of plate brake stage plate (3) and side force；In car emergency braking procedure, control system obtains brake force and side force in real time, and to Analysis of test results, carries out estimation of stability.As shown in Figure 6, evaluation methodology is: ifAutomobile will break away, wherein FyMaking a concerted effort for side force, F is that brake force is made a concerted effort, FCloseFor adhesive force；IfAutomobile will be turned on one's side, and wherein hg is centre of gravity of vehicle height, and mg is complete vehicle quality, and B is automobile wheel track；
Step 5, after car braking is totally stationary, the display interfaces of industrial computer (22) there will be the side force of vehicle right and left front wheel brake power, left and right rear-wheel braking force and each wheel and changes over the curve of relation；The brake force of detection end vehicle and side force change over the curve of relation and also can preserve in industrial computer (22) hard disk.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610517688.XA CN105938034B (en) | 2016-07-04 | 2016-07-04 | Lateral force test device and method based on tablet braking |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610517688.XA CN105938034B (en) | 2016-07-04 | 2016-07-04 | Lateral force test device and method based on tablet braking |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN105938034A true CN105938034A (en) | 2016-09-14 |
| CN105938034B CN105938034B (en) | 2018-08-10 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610517688.XA Expired - Fee Related CN105938034B (en) | 2016-07-04 | 2016-07-04 | Lateral force test device and method based on tablet braking |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106595936A (en) * | 2016-12-30 | 2017-04-26 | 北京盘天新技术有限公司 | Three-dimensional combination force measuring device |
| CN106679873A (en) * | 2016-12-30 | 2017-05-17 | 北京盘天新技术有限公司 | Method of measuring braking force by using three-dimensional combined force measuring device |
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| CN104502014A (en) * | 2014-12-16 | 2015-04-08 | 吉林大学 | Rack-based braking force detection device and method capable of automatically adjusting automobile axle load |
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2016
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| JP2010096628A (en) * | 2008-10-16 | 2010-04-30 | Toyota Motor Corp | System and method for acquiring damping characteristic value of vibration insulating member |
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Cited By (2)
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