CN105699011B - Simulated automotive tire rotates and the engine bench test system of air pressure inside variation - Google Patents
Simulated automotive tire rotates and the engine bench test system of air pressure inside variation Download PDFInfo
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- CN105699011B CN105699011B CN201610176842.1A CN201610176842A CN105699011B CN 105699011 B CN105699011 B CN 105699011B CN 201610176842 A CN201610176842 A CN 201610176842A CN 105699011 B CN105699011 B CN 105699011B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L27/00—Testing or calibrating of apparatus for measuring fluid pressure
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01L—MEASURING FORCE, STRESS, TORQUE, WORK, MECHANICAL POWER, MECHANICAL EFFICIENCY, OR FLUID PRESSURE
- G01L17/00—Devices or apparatus for measuring tyre pressure or the pressure in other inflated bodies
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Abstract
The present invention provides the engine bench test systems of a kind of rotation of simulated automotive tire and air pressure inside variation, realize to tire pressure monitoring system（TPMS）The laboratory test of every dynamic and static function.The system includes rotating pressure-bearing device（Simulate tire）, aerating and exhaust device, water/gas interlock sealing device, rotating driving device, data acquisition process and control system.Simulation tire rotational speed is adjusted by PLC and frequency converter, and in simulation tire high-speed cruising, using pre-set programs or manual control mode, simulation inside tires inflation/deflation is realized by PLC and pressure transmitter, control valve, accurately control and adjust air pressure inside, there are the situations such as the excessively high, rapid air leakage of tyre of tyre underpressure, tire pressure under transport condition in simulated implementation automobile, for detecting the functions such as the tire pressure monitoring of tire pressure monitoring system and alarm.Detection process repeats comparison, not only increases detection accuracy, also improves work efficiency, while is avoided that the security risk that real steering vectors are brought.
Description
Technical field
The invention belongs to vehicle passive safety testing fields, are related to tire pressure monitoring system（TPMS）Dynamic and static work(
The detecting system of energy.
Background technology
At present, to the detection foundation national standard of tire pressure monitoring system《Automobile based on tire pressure monitoring module
Tire pressure monitoring system》（GB/T 26149）, numerous items need to be completed by real steering vectors, especially a part of dynamically to test
Project need to carry out under galloping state, and the speed requirement of highest test point reaches 120 kilometers/hour, and herein
It to be realized under speed and stop deflating after tire pressure to be persistently deflated to specified value, such test request is brought to tester
Great security risk, and realization is also extremely difficult to the data acquisition of test component and endangers in the automobile in the case where running at high speed
Danger.The present invention propose comprising under simulated automotive transport condition dynamic inflation/deflation, Dynamic Water/hermetic seal, dynamic speed control,
The system of the functions such as data frequency sweep reception realizes all standing of detection project under the real vehicle state to standard requirement, test result
Accuracy is high and repeats comparison, and entire test process safety standard is avoided that the security risk that real steering vectors are brought.
The content of the invention
The purpose of the present invention is overcome the deficiencies of the prior art and provide a kind of simulated automotive tire rotation and air pressure inside to become
The engine bench test system of change, adjustable simulated tire rotational speed emulate tire internal pressure environment under vehicle driving state and change, mould
There are the situations such as the excessively high, rapid air leakage of tyre underpressure, tire pressure in running at high speed in plan, and realizes to tire pressure monitoring system（TPMS）
The test in laboratory of various functions.
The engine bench test system of the simulated automotive tire rotation and air pressure inside variation includes：Rotating pressure-bearing device fills
Means of deflation, Water gas linkage sealing device, rotating driving device, data acquisition process and control system, the rotating pressure-bearing dress
It is with the pressure resistant vessel that can load and unload cover board to put agent structure, and rotating pressure-bearing device drives rotation at a high speed simultaneously by rotating driving device
Rotating speed is adjusted, simulates the tyre rotation under corresponding speed；
The aerating and exhaust device includes cantilever shaft, support housing and compression system, and each rotating pressure-bearing device is independently pacified
Arm pivoted front end is hanged loaded on one, the gas chamber inside rotating pressure-bearing device with being located at cantilever shaft stage casing is made by axis through-hole
It is connected, the gas chamber is co-axially mounted and separated by a distance close by cantilever shaft outer surface, support housing inner surface and two
Seal ring is formed, and the gas chamber is equipped with inlet, outlet, is connected with compression system, realizes rotating pressure-bearing device in high speed rotation state
Under inflation or deflation；
The Water gas linkage sealing device includes：One water-tight compartment is respectively set in gas chamber both sides, water-tight compartment is by cantilever shaft
Outer surface, support housing inner surface and the sealing ring are formed；
The data acquisition process and control system include：It is gentle that pressure transmitter is respectively provided in gas chamber inlet, outlet
Valve senses inlet, outlet pressure by pressure transmitter, and air pressure is adjusted by PLC control air valve openings；It is controlled and revolved by PLC first
Rotary driving device adjusts the rotating speed of the rotating pressure-bearing device, and in rotating pressure-bearing device high-speed cruising, using default
Program or manual control mode realize inflation/deflation inside rotating pressure-bearing device by PLC and pressure transmitter, air valve, accurate to control
System and adjusting air pressure inside, tire rotation and internal pressure environment of the simulated automotive under high-speed motion state.Emulation mode bag
It includes automobile and occurs that tyre underpressure, tire pressure be excessively high, situation of rapid air leakage of tyre under transport condition.
When equipment is run, water-filling first is carried out to water-tight compartment, water-tight compartment is made to carry out inflation/deflation to gas chamber again after filling water.
The water of the water-tight compartment is recycled by circulating cooling system.
Simulating the rotating speed of tire can complete according to the general data frequency sweep in road of different automobile types.
The rotating driving device includes the motor and frequency converter that interconnect, and frequency converter connection PLC, cantilever shaft is by electricity
Machine drives, and by PLC and Frequency Converter Control motor speed, the variable speed of rotating pressure-bearing device is realized, according to pre-set programs mould
Intend corresponding tire rotational speed under different automobile types, different travel speeds；The corresponding cantilever shaft of each rotating pressure-bearing device by
Individual motor and frequency converter drive and control, can simulate the speed discrepancy effect that real vehicle is generated when indivedual tire pressure change
Fruit realizes the detection to indirect type tire pressure monitoring system function.
Fast fixture is also set up inside the pressure resistant vessel, sample is inspected for installing fixation.
It is an advantage of the invention that：Simulation tire rotational speed is adjusted by PLC and frequency converter, and in simulation tire high-speed cruising feelings
Under condition, using pre-set programs or manual control mode, realize that simulation inside tires are filled by PLC and pressure transmitter, control valve
It deflates, accurately controls and adjusts air pressure inside, simulated implementation automobile occurs that tyre underpressure, tire pressure are excessively high, take turns under transport condition
The situations such as tire rapid air leakage, for detecting the functions such as the tire pressure monitoring of tire pressure monitoring system and alarm.Detection process can weigh
Compound ratio pair not only increases detection accuracy, also improves work efficiency, while is avoided that the safety that real steering vectors are brought is hidden
Suffer from.
Description of the drawings
Fig. 1 is integral frame structure schematic diagram of the present invention.
Fig. 2 is that rotating pressure-bearing device of the present invention and water/gas interlock sealing device mechanical construction drawing.
Fig. 3 is control structure schematic diagram of the present invention.
Specific embodiment
The invention will be further described with reference to the accompanying drawings and examples.
The present invention by 4 independent controls rotating pressure-bearing unit simulation automobile 4 tires, filled by dynamic inflation/deflation
It puts, dynamic water/gas interlocks sealing device, rotating driving device 20, safety device and data acquisition process and control system
Deng the inner tyre pressure environmental simulation realized under vehicle driving state, there is tyre underpressure, tire pressure mistake when running at high speed in simulation
The situations such as height, rapid air leakage.As shown in Figure 1, sealing device is interlocked by dynamic aerating and exhaust device, dynamic water/gas, rotation driving fills
Put the pressure resistant vessel 1 of 20 collective effect rotating pressure-bearing devices.
1st, rotating pressure-bearing device（Simulate tire）.
As shown in Fig. 2 left parts, rotating pressure-bearing apparatus main body structure is with the pressure resistant vessel 1 that can load and unload cover board, is used
42crmo is once forged, it is ensured that reaches enough pressure-bearing grades.Pressure-bearing device is driven by motor to be rotated at a high speed, passes through frequency conversion
Rotating speed is adjusted in device, simulates the tyre rotation under corresponding speed.1 inside of pressure resistant vessel sets fast fixture structure, is easily installed
Sample is inspected in fixation.All components of device are calibrated entirely through dynamic balancing, it is ensured that steadily reliable in high-speed cruising.
2nd, dynamic aerating and exhaust device.
As shown in Fig. 2, each simulation tire is independently installed in the front end of a cantilever shaft 7, designed by axis through-hole,
Simulation inside tires is made to be connected with the gas chamber 4 positioned at 7 stage casing of cantilever shaft, gas chamber 4 is by 7 outer surface of cantilever shaft, support housing 5
Inner surface and two are co-axially mounted and sealing ring 3 separated by a distance is formed, and equipped with inlet, outlet, are connected with compression system,
Realize inflation or deflation of the simulation tire under high speed rotation state.Pressure transmitter is respectively provided in 4 inlet, outlet of gas chamber
And air valve, air inlet/outlet pressure is sensed by pressure transmitter, air pressure is adjusted by PLC control air valve openings, realizes simulation tire
Internal pressure is precisely controlled, and regulation precision reaches 1kPa.Support housing 5 is fixed in stent 8, stent 8 and cantilever shaft 7 it
Between connected by bearing 6.
3rd, dynamic water/gas interlocks sealing device.
As shown in Fig. 2, since the maximum gas pressure of simulation inside tires need to reach 2.0MPa, and require in the lower progress that runs at high speed
Inflation/deflation, therefore it is required that high dynamic gas sealing effect.To prevent hyperbar sealing device from being generated in running at high speed largely
Heat burns out sealing device and even burns out main shaft, and the system devises coaxial-type water/gas sealing structure, i.e., in shaft gas chamber 4
The outside of right-left seal ring 3 respectively sets one of watertight seal ring, and 4 outside of gas chamber is made respectively to increase a water-tight compartment 2, is on the one hand played cold
But on the other hand cooling effect also balances the stress of pressurized seal ring both sides, greatly improve the sealing effect of gas chamber.Equipment is transported
During row, water-filling first is carried out to water-tight compartment 2 with water pump, water-tight compartment 2 is made to fill water, has the function that sealing and cooling, it is right again afterwards
Gas chamber 4 carries out inflation/deflation.The water of water-tight compartment 2 is recycled by circulating cooling system.
4th, rotating driving device.
Simulation tire shaft is driven by motor, by PLC and Frequency Converter Control motor speed, realizes the stepless change of tire
Speed simulates corresponding tire rotational speed under different automobile types, different travel speeds according to pre-set programs.The shaft of each tire by
Individual motor and frequency converter drive and control, can simulate the speed discrepancy effect that real vehicle is generated when some tire pressure changes
Fruit realizes the detection to indirect type TPMS functions.
5th, data acquisition process and control system, including above-mentioned pressure transmitter and air valve and PC and PLC control system
System, as shown in figure 3, PC and PLC control system connect pressure transmitter, air valve, frequency converter and display screen respectively, to host computer
Outputs level signals.
PC and PLC control system are by operation monitoring software, operation controller, data collecting system and servo controller group
Into can realize the dynamic control to executive component.
（1）Run monitoring software：Operation monitoring software can be run in more than wplsoft3.06 versions, have close friend's
Man-machine interface can select monitoring pressure disc, the dynamic operation of brake part, Adjustment Tests condition and operation can join as needed
Number, software reserve self-programming human window.
（2）The response speed of controller is run as 20m/s, high-speed pulse is not less than 200k, and host carries 24 numerical digit point positions,
Built-in 12bit.
（3）Data collecting system is two passages, is equipped with 485 interface of RS, to realize the Redundant Control of system, is increased
The reliability of system communication；Communications protocol uses TCP/IP agreements, and in communicating interrupt, system has self- recoverage diagnostic function.
6th, safety device.
To ensure that the system is reliable and stable, electrical appliance part selects high reliability device, and uses low pressure soft start；System is matched somebody with somebody
There is the field control box convenient for manual intervention, including alarm, emergency stop etc..Since gas pressure is high, there is provided water/gas gearings for system
Automatic protection program is sealed, can be pressurizeed after water-tight compartment water-filling reaches normal to gas chamber, to ensure the safety of sealing structure；Gas
Dynamic circuit is connected using pressure-resistant materials such as copper pipe, stainless joints with solenoid valve, and controls gas outflow pressure equipped with safety valve
Size, it is safe to achieve the purpose that.
Claims (7)
1. simulated automotive tire rotates and the engine bench test system of air pressure inside variation, it is characterized in that, including：Rotating pressure-bearing fills
It puts, aerating and exhaust device, Water gas linkage sealing device, rotating driving device, data acquisition process and control system, the rotation are held
Pressure device agent structure is with the pressure resistant vessel that can load and unload cover board（1）, rotating pressure-bearing device is driven high by rotating driving device
Speed rotates and adjusts rotating speed, simulates the tyre rotation under corresponding speed；
The aerating and exhaust device includes cantilever shaft（7）, support housing（5）And compression system, each rotating pressure-bearing device are independent
It is installed on a cantilever shaft（7）Front end, by axis through-hole make inside rotating pressure-bearing device with positioned at cantilever shaft（7）In
The gas chamber of section（4）It is connected, the gas chamber（4）By cantilever shaft（7）Outer surface, support housing（5）Inner surface and two coaxial peaces
Dress and sealing ring separated by a distance（3）It forms, the gas chamber（4）Equipped with inlet, outlet, it is connected with compression system, realizes
Inflation or deflation of the rotating pressure-bearing device under high speed rotation state；
The Water gas linkage sealing device includes：In gas chamber（4）Both sides respectively set a water-tight compartment（2）, water-tight compartment（2）By cantilever
Shaft（7）Outer surface, support housing（5）Inner surface and the sealing ring（3）It forms；
The data acquisition process and control system include：In gas chamber（4）It is gentle that inlet, outlet is respectively provided with pressure transmitter
Valve senses inlet, outlet pressure by pressure transmitter, and air pressure is adjusted by PLC control air valve openings；It is controlled and revolved by PLC first
Rotary driving device adjusts the rotating speed of the rotating pressure-bearing device, and in rotating pressure-bearing device high-speed cruising, using default
Program or manual control mode realize inflation/deflation inside rotating pressure-bearing device by PLC and pressure transmitter, air valve, accurate to control
System and adjusting air pressure inside, tire rotation and internal pressure environment of the simulated automotive under high-speed motion state.
2. the engine bench test system of the rotation of simulated automotive tire and air pressure inside variation according to claim 1, it is characterized in that,
Emulation mode occurs that tyre underpressure, tire pressure be excessively high, situation of rapid air leakage of tyre including automobile under transport condition.
3. the engine bench test system of the rotation of simulated automotive tire and air pressure inside variation according to claim 1, it is characterized in that,
When equipment is run, first to water-tight compartment（2）Water-filling is carried out, makes water-tight compartment（2）Water is filled afterwards again to gas chamber（4）Carry out inflation/deflation.
4. the engine bench test system of the rotation of simulated automotive tire and air pressure inside variation according to claim 1, it is characterized in that,
The water-tight compartment（2）Water recycled by circulating cooling system.
5. the engine bench test system of the rotation of simulated automotive tire and air pressure inside variation according to claim 1, it is characterized in that,
The rotating speed for simulating tire is completed according to the general data frequency sweep in road of different automobile types.
6. the engine bench test system of the rotation of simulated automotive tire and air pressure inside variation according to claim 1, it is characterized in that,
The rotating driving device includes the motor and frequency converter that interconnect, frequency converter connection PLC, cantilever shaft（7）By motor band
It is dynamic, by PLC and Frequency Converter Control motor speed, realize the variable speed of rotating pressure-bearing device, according to pre-set programs simulation not
Corresponding tire rotational speed under same vehicle, different travel speeds；Each corresponding cantilever shaft of rotating pressure-bearing device（7）All by only
Vertical motor and frequency converter drive and control, can simulate the speed discrepancy effect that real vehicle is generated when indivedual tire pressure change
Fruit realizes the detection to indirect type tire pressure monitoring system function.
7. the engine bench test system of the rotation of simulated automotive tire and air pressure inside variation according to claim 1, it is characterized in that,
The pressure resistant vessel（1）Inside sets fast fixture, and sample is inspected for installing fixation.
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| CN201610176842.1A CN105699011B (en) | 2016-03-25 | 2016-03-25 | Simulated automotive tire rotates and the engine bench test system of air pressure inside variation |
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| CN201610176842.1A CN105699011B (en) | 2016-03-25 | 2016-03-25 | Simulated automotive tire rotates and the engine bench test system of air pressure inside variation |
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| CN105699011B true CN105699011B (en) | 2018-05-18 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107976281A (en) * | 2017-11-22 | 2018-05-01 | 中国汽车技术研究中心 | A kind of Combined automobile tyre tyre pressure sensor detection device |
| FR3074095B1 (en) * | 2017-11-30 | 2020-12-11 | Ateq | APPARATUS FOR TESTING A CALIBRATED LEAK OF GAS ON A PNEUMATIC VALVE, PLUG FOR SUCH AN APPARATUS, AND ASSOCIATED PROCEDURE FOR CHECKING FOR LEAK DETECTION. |
| CN107907271B (en) * | 2017-12-07 | 2023-12-22 | 无锡宏聚电子科技有限公司 | Tire pressure chip testing device and tire pressure chip testing system |
| CN110926687A (en) * | 2019-11-29 | 2020-03-27 | 苏州紫联汽车科技有限公司 | Automobile tire pressure simulation test method |
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