CN205620111U - Auto electric backrest performance testing platform - Google Patents

Abstract

The utility model provides a host computer that auto electric backrest performance testing platform by fixed measured piece and control the clamping rack of measured piece action, gathers, analysis signal and an electric cabinet constitutes that carries out motion control measured piece and clamping rack are articulated, and wherein, clamping rack passes through IO with electric cabinet and communication cable is electric is connected, and electric cabinet connects the host computer, the host computer is provided with the display, clamping rack links firmly the die clamping cylinder of fixed measured piece including frame, frame both sides correspondence, is provided with the sound detection device on the frame, vibration detection device, electric current and ripple memory function detecting device, hall memory detection device. The industry microphone detects sound, acceleration sensor detects vibration, current transmitter measuring current and ripple memory function, and the comparison circuit sum counter detects the hall memory function. This device is equipped with special silence room. The function is comprehensive and the cost is relatively low, has fine market value.

Description

Electric seat of car backrest combination property test desk

Technical field

This utility model belongs to automobile manufacturing field, particularly to electric seat of car backrest combination property test desk.

Background technology

At automobile component performance detection field, existing detection scheme generally utilizes current transducer detection motor electricity Stream, comparator circuit counter electric circuit inspection Hall memory function, say, that not detecting vibration and noise, current Europe has The detection vibration of some companies and noise, and there have relevant software and hardware to sell to be domestic.

Current detecting and Hall memory detection are the most general.Repeat no more.

In existing technology, the test platform of the DriveTest company of Germany uses the main frame of sensor contacts unit under test Frame, is moved by component motor band dynamic component, and vibration signal is converted into acoustical signal and enters system by sensor, and data are entered by system Row analyzing and processing, has the most only processed the acoustical signal converted.Also have the test software of Buddhist Ji Asia and Europe continent corporate investment research and development, Main test vibration signal, then utilizes software analysis vibration signal and vibration signal simulation is become acoustical signal, namely Say that this mode does not really collect acoustical signal.

The equipment of DriveTest company is owing to only having focused on the detection of sound, therefore, is only applicable in car not contact human body Motor driving part part, such as skylight etc., it is impossible to detection and parts such as the seat etc. of human body close contact, the scope of application is too narrow, fits Not enough with face, and its equipment needs to be equipped with high-quality headset, is usually put on headset when detection by operator, goes by ear Listening sound that sensor transmits and participate in result and judge, this detection mode depends on experience and the subjective consciousness of tester, and And the equipment cost of DriveTest is the highest, separate unit is at 2,000,000 yuan, and the reason that the said firm's cost is high is the skill that they grasp Art, domestic Ye You company copied, and effect is less desirable；The test system of Fo Jiya the most antithesis, tests vibration, but Its acoustical signal calculates from vibration signal, and this is not actually genuine acoustical signal, easily causes judgement not Accurately, sound is two different systems with vibration for human body for ear, and its impact is also different.

Utility model content

For solving the problem that above-mentioned prior art exists, the purpose of this utility model is to provide a kind of electric seat of car Backrest combination property test desk, main utilization industry microphone detects sound, utilizes acceleration transducer detection vibration, utilization electricity Flow transmitter detection electric current and ripple memory function, utilize comparison circuit sum counter to detect Hall memory function.In order to detect Acoustical signal and not affected by environmental noise, this device need to be placed in special quiet room.The total cost of this equipment is About 500000 yuan, far below the product of DriveTest company, and vibration, sound, electric current, memory function parameter, property can be detected The software of existing Fo Jiya can be substantially better than.

For reaching above-mentioned purpose, the technical solution of the utility model is:

A kind of electric seat of car backrest combination property test desk, by fixing measured piece the folder that controls measured piece action Hold frame, the host computer gathering, analyzing signal and the electric cabinet carrying out action control composition, described measured piece and clamping frame Hinged, wherein, clamping frame electrically connected by IO and communication cable with electric cabinet, electric cabinet connection host computer, described on Position machine is provided with display, and described clamping frame includes framework, and framework both sides correspondence is fixed with the clamping gas of fixing measured piece Cylinder, framework is provided with sound detection device, vibration detection device, electric current and ripple memory function detection device, and Hall is remembered Detection device.

Further, bottom described clamping frame, it is equipped with base plate, base plate arranges two locating pieces side by side, locating piece Through clamping and positioning hole, measured piece is hinged by screw, clamping cylinder one end is hinged with base plate, and the other end passes through chuck thereon Fixing measured piece.

Further, the right angle of described framework is connected by girth member reinforcing.

Further, described clamping machine sets up and is placed in the quiet room with mute shock absorption effect.

Further, described sound detection device uses industry microphone, is placed on movement parts side.

Further, described vibration detection device uses acceleration transducer, is arranged in rotary shaft.

Further, described electric current and ripple memory function detection device use current transducer, connect with motor.

Further, described Hall memory detection device uses comparison circuit sum counter, and comparator circuit is by motor The voltage that Hall element is launched makes a distinction, it is simple to rolling counters forward.

Further, data collecting system first passes through acceleration transducer LC01 and automatic seat is leaned on by current sensor The back of the body backrest shaft vibration and motor current signal when doing predetermined action are acquired, and the signal of collection is through programmable filter CM3504 carries out preliminary signals filtering, and the signal of collection device after filtering is sent to data acquisition card PCI4472 and PCI6221 In, application LabVIEW virtual instrument software reads the signal of data acquisition card and is further filtered and signal processing, initially Obtain the result being consistent with requirement of system design.

Relative to prior art, the beneficial effects of the utility model are:

Using quiet room isolation outside noise, the sound making test is truer.

This utility model method for testing vibration reduces external environment to vibration, the impact of noise testing.

All detection parameters of the present utility model all may be configured as optional parameters, i.e. by the engineer having permission according to being given birth to Which parameter is the feature of the product produced select need detection, and which parameter need not detection, is so adapted to overwhelming majority vapour Car electric drive parts.

Owing to different auto parts and components frame for movement is different, so installation way also can be different, therefore native system is by two Part forms both frame for movement action control part and detecting system part, and frame for movement action control part is mainly used in clamping Action control, does not have versatility.But be available with software design patterns sequence of movement, so that software is adapted to dissimilar Electric drive parts.Detecting system is partially due to the project of detection has versatility, so this partial software has versatility. I.e. native system is quasi-hardware and software platform equipment.

Accompanying drawing explanation

Fig. 1 is structural representation of the present utility model.

Fig. 2 is side structure schematic diagram of the present utility model.

Fig. 3 is vibration-testing hardware connection figure.

Fig. 4 is that Multipexer changes public A/D correspondence pci6221 to industrial computer signal transition diagram.

Fig. 5 is independent A/D, the corresponding daynamic transformation schematic diagram of digital multi-channel conversion.

Fig. 6 is that current sensor is connected with motor.

Fig. 7 is that current sensor is connected with PCI-6221.

Fig. 8 is clamping cylinder structural representation.

1-clamps frame, 2-clamping cylinder, 3-measured piece, 31-sound detection device, 32-vibration detection device, 33-electricity Stream and ripple memory function detect device, and 34-Hall memory detection device, 4-IO and communication cable, 5-quiet room, 6-is upper Machine, 7-electric cabinet, 8-loading system, 9-clamping and positioning hole 10-rotary shaft, 11-backrest motor, 12-locating piece.

Detailed description of the invention

With detailed description of the invention, technical solutions of the utility model are described in further detail below in conjunction with the accompanying drawings:

As shown in Figure 1-2, a kind of electric seat of car backrest combination property test desk, by fixing measured piece and control tested The clamping frame 1 of part action, the host computer 6 gathering, analyzing signal and the electric cabinet 7 carrying out action control form, described quilt Surveying part 3 hinged with clamping frame 1, wherein, clamping frame 1 is electrically connected by IO and communication cable 4 with electric cabinet 7, electric machine Cabinet 7 connects host computer 6, and described host computer 6 is provided with display, and described clamping frame 1 includes framework, and framework both sides correspondence is solid It is connected with the clamping cylinder 2 of fixing measured piece, framework is provided with sound detection device 31, vibration detection device 32, electric current and stricture of vagina Ripple memory function detection device 33, Hall memory detection device 34.

Further, bottom described clamping frame 1, it is equipped with base plate, base plate arranges two locating pieces 12 side by side, fixed Position block 12 is hinged by measured piece through clamping and positioning hole 6 by screw, and clamping cylinder 2 one end is hinged with base plate, and the other end passes through it On chuck fix measured piece.

Further, the right angle of described framework is connected by girth member reinforcing.

Further, in described clamping frame 1 is arranged at the quiet room 5 with mute shock absorption effect.

Further, described sound detection device 31 uses industry microphone, is placed on movement parts side.

Further, described vibration detection device 32 uses acceleration transducer, is arranged in rotary shaft.

Further, described electric current and ripple memory function detection device 33 use current transducer, connect with motor.

Further, described Hall memory detection device 34 uses comparison circuit sum counter, and comparator circuit is by motor The voltage that interior Hall element is launched makes a distinction, it is simple to rolling counters forward.

Further, data collecting system first passes through acceleration transducer LC01 and automatic seat is leaned on by current sensor The back of the body backrest shaft vibration and motor current signal when doing predetermined action are acquired, and the signal of collection is through programmable filter CM3504 carries out preliminary signals filtering, and the signal of collection device after filtering is sent to data acquisition card PCI4472 and PCI6221 In, application LabVIEW virtual instrument software reads the signal of data acquisition card and is further filtered and signal processing, initially Obtain the result being consistent with requirement of system design.

The overall structure of this detection platform is made up of three parts:

One, fix driving member and control frame for movement and the electric control system of component actuation；

Two, gather, analyze the host computer of signal.

Three, the electric cabinet of action control is carried out.

Detection device is placed in the quiet room with sound insulation and damping effect, and industrial computer and switch board are arranged on quiet room Outer personnel convenient to operate carry out operating and observe detection process.The fixture of fixing driving member, folder it is mounted with in clamping frame Tool clamps under cylinder action and unclamps.Securing acceleration transducer and noise transducer in frame, driving member is in fortune The vibration and the noise that produce during Dong are gathered in quiet room.The action control of signal acquisition process and testing result Display is responsible for by the switch board being placed in outside quiet room.

Owing to automobile driving member has various different mechanical mechanism, in order to make equipment have versatility as far as possible, we Detecting system is separated design with IO motion control system, makes detecting system possess certain independence, IO control system and dress The frame for movement of folder driving member is then different according to different types of driving member.IO action is by PLC or microcomputer IO card control, when needs detect to detecting system software send detection initiation command, detection at the end of decontrol Machinery Ministry Part.The versatility of detecting system and the motility of mounting and clamping system are so accomplished.

Detection specific operation process is as follows:

Operator driving member is put frame → by both hands start button → fixture action, system in situ → close quiet Tone chamber → driving member action → data acquisition → Data Analysis Services → outcome graphic display.

The first step: reset key button after remodeling, platform will change direction；The sensor worked is that platform direction is known Individual sensor (proximity switch of M12)

Second step: put into by measured piece in fixture, the green indicating lamp at start button station is bright；The workpiece arranged is utilized to put in place Whether detection sensor (proximity switch) detection workpiece puts in place.

3rd step: both hands start, and clamp, the green indicating lamp on start button station goes out；The sensor worked is Cylinder to level sensor

4th step: safety lock cylinders retract, declines if any load then load lift cylinder, and load is fallen on measured piece；Rise Effect sensor be weight lift cylinder to level sensor and safety lock cylinder home position sensing note: the position of safety lock cylinder Put the rear side at weight lift cylinder

5th step: acceleration transducer cylinder stretches out；The sensor worked is the biography that puts in place of acceleration transducer cylinder Sensor

6th step: detection starts, and now software authority gives parameter testing software, test vibration, noise, electric current, memory Function；During this period, the sensor worked be three current sensors, four acceleration transducers, two microphones, two Laser range sensor, an angular transducer

7th step: detection terminates, stores data, acceleration transducer cylinders retract, and now software authority returns motion control Software processed；The sensor now worked is acceleration transducer cylinder home position sensing

8th step: delivery position gone to by motor；The sensor now worked is three groups of correlation photoelectric sensings on equipment Device, when the signal of sensor is low level, it was demonstrated that delivery position gone to by motor

9th step: if any load, then load back in situ, and otherwise a flow process terminates

The device combination property quality testing to electric drive parts of research, the quality for the product that ensures to dispatch from the factory plays Pivotal role, detection parameter meets testing requirement.

1, meet vibration and sound test request, utilize acceleration transducer and microphone to realize operating motor is driven Vibration and sound that dynamic component sends detect, and use the parameters such as kurtosis, RMS, LEQ, marginal testing or methods to portion Part carries out detection and judges, plant automation degree is high, fully meets the needs of component capabilities detection.

2, meet current detecting and memory function testing requirement, utilize current sensor detection direct current generator current precision to reach Arrive 0-10A (± 0.1A).And use the circuit such as comparator circuit, ripple count and the memory merit of algorithm detection driving member Can, testing result meets requirement.

3, this product design is advanced, rational in infrastructure, can substitute import sophisticated equipment, and cheap.With introduction import Equipment is compared, and introducing this equipment is that enterprise saves large number quipments fund.

4, use over the past half year, basic fault-free.Till now, using this device is that enterprise creates considerable economic effect Benefit.

The design of electrical system of detection device

The hardware components of native system includes PCI-4472, PCI-6221, MPA201, LC01, CM3504 etc..Work process is The vibration signal of backrest is gathered by piezoelectric acceleration transducer LC0119, and the signal after collection passes to CM3504 four-way Program control filtering conditioning card is filtered, and filtered signal is converted into digital signal by PCI-4472, passes to computer.MPA201 For mike, the noise produced during acquisition testing.The display of testing result is by test data in graph form Show, because test is to use computer-controlled Auto-Test System, because detection number of signals is many, and be uninterrupted Real-time monitoring, so detection data need relevant management, data management includes the classification of data, storage, playback, and number According to safety etc..The vibration-testing hardware catenation principle figure of system is as shown in Figure 3.Wherein, the pulse signal pair of hall sensing detection Answer I/O signal, ripple corresponding current sensor.

This utility model uses Virtual Analysis software be analyzed vibration signal and process, collected at vibration signal Signal is carried out pretreatment before virtual instrument.What vibration signal collected after sensor is analogue signal, through program control After wave filter and amplifier process, analogue signal is filtered and is amplified, but this signal can not be subsequently can by computer.For The analog quantity such as vibration signal and current signal is enable to be subsequently can by computer, it would be desirable to use data collecting card.Data acquisition One of main task of card has been A/D conversion, and it plays, in whole modernization detection, the pivotal role taken over from the past and set a new course for the future.Typically Conventional capture card divides single channel and multichannel collecting two class, and the composition structure of multichannel collecting card is as shown in Figure 4, Figure 5.Its In, Fig. 4 Multipexer changes public A/D correspondence pci6221 to the arrow of industrial computer；Individually A/D, digital multi-channel conversion correspondence are moved State data arrow

During detection, it is often necessary to multiple signals being carried out data acquisition, this can be adopted by multi-channel data simultaneously Truck realizes.Multi-channel data acquisition board generally has a two ways:

2. with Multipexer conversion (AMUX) of analog (A/D) transducer, as shown in Figure 4；

The most each passage independently uses digital multi-channel conversion (DMUX) of analog (A/D) transducer, as shown in Figure 5.

Both modes are respectively arranged with its pluses and minuses: using the advantage sharing A/D converter is passage low cost, simple in construction. Its shortcoming is that each interchannel has time difference, and owing to being applied only for an analog-digital converter, conversion efficiency is low, therefore sample frequency is low by one A bit；When each passage is respectively adopted independent analog-digital converter, carry out analog digital conversion, conversion efficiency due to multiple transducers simultaneously Height, sample frequency is high, and each passage is changed simultaneously, eliminates the time difference required for each Channel-shifted, but relatively costly.

System selects NI PCI-4472 dynamic signal acquisition card for the collection of vibration signal.This data collecting card is one Money is engaged in the capture card of high accuracy frequency domain measurement, and input channel is integrated with piezoelectric type (IEPE) signal condition function, can be used for adding Velocity sensor and sound signal collecting, multichannel input signal can be counted in 8 input channels by NI PCI-4472 simultaneously Word.When needing the signal gathered higher than 8 tunnel, this board can realize the synchronization between PCI-4472 board.4472 boards When being used in conjunction with LabVIEW sound and vibration tool bag or other software analysis tools, various time and frequency can be carried out Accurately measure.

Current detection circuit designs

Measurement as electric current then selects NI PCI-6221 board to realize

The connection of current sensor as shown in Figure 6, as a example by horizontal motor, realizes the positive and negative of horizontal motor by relay Turning, current sensor concatenates in circuit, and the connection of current sensor and PCI-6221 card is as shown in Figure 6.

Fig. 7 is that current sensor is connected with PCI-6221

The electric current of direct current generator when the effect of current sensor is to measure work, and prevent from causing direct current because electric current is excessive Motor damage.The electric current recorded through current sensor is passed to PCI-6221 card and is acquired, and shows the most in a computer.

Programmable logic controller mainly designs for field control, and its man machine interface is mainly switch, button, refers to Show lamp etc..Not only having good adaptability, its expandability is the most increasingly widely applied.Use the control of PLC System or device have that reliability is high, easily controllable, system flexible design, can simulated field debugging, good capacity of resisting disturbance Etc. feature.But PLC is also difficult to show various curve, the shortcoming such as chart and Chinese character, and no user interface, it is difficult to monitoring.Institute Being designed with PLC as slave computer with, native system, perform decentralised control the most reliably, selection can provide good man-machine boundary The computer in face carries out monitoring and the management of system as host computer, the most both can guarantee that systematic function, and system can be made again to operate Easy, it is simple to effective supervision of detection process.

PLC is attached by Profibus bus with industrial computer, it is achieved PLC is point-to-point with industrial computer upper and lower computer logical Letter.

Clamping cylinder structure as shown in Figure 8, is connected a most flexible air cylinder device by an angle bar being fixed on framework, The hinged holder of air cylinder device telescopic end.

Table 1 detection part information

Table 2 current detecting data

Table 3 vibration detection data

Table 4 noise testing data

In marginal testing, 0 represents that marginal testing passes through, and 1 represents that rotating forward marginal testing is defective, and 2 represent that reversion borders are surveyed Try defective.

Above-mentioned data are the numbers under factory's normal operation circumstances, when detecting car seat skeleton on assembly line According to.

The above, detailed description of the invention the most of the present utility model, but protection domain of the present utility model does not limit to In this, any change expected without creative work or replacement, all should contain within protection domain of the present utility model. Therefore, protection domain of the present utility model should be as the criterion with the protection domain that claims are limited.

Claims (7)

1. an electric seat of car backrest combination property test desk, it is characterised in that by fixing measured piece and control measured piece The clamping frame of action, the host computer gathering, analyzing signal and the electric cabinet carrying out action control composition, described measured piece with Clamping frame is hinged, and wherein, clamping frame is electrically connected by IO and communication cable with electric cabinet, and electric cabinet connects upper Machine, described host computer is provided with display, and described clamping frame includes framework, and framework both sides correspondence is fixed with fixing measured piece Clamping cylinder, framework is provided with sound detection device, vibration detection device, electric current and ripple memory function detection device, Hall memory detection device, described clamping machine sets up and is placed in the quiet room with mute shock absorption effect.

Testboard the most according to claim 1, it is characterised in that be equipped with base plate, on base plate bottom described clamping frame Arranging two locating pieces side by side, locating piece is hinged by measured piece through clamping and positioning hole by screw, clamping cylinder one end and the end Plate is hinged, and the other end fixes measured piece by chuck thereon.

Testboard the most according to claim 2, it is characterised in that the right angle of described framework is connected by girth member and reinforces.

Testboard the most according to claim 1, it is characterised in that described sound detection device uses industry microphone, puts Put on movement parts side.

Testboard the most according to claim 1, it is characterised in that described vibration detection device uses acceleration transducer, It is arranged in rotary shaft.

Testboard the most according to claim 1, it is characterised in that described electric current and ripple memory function detection device use Current transducer, connects with motor.

Testboard the most according to claim 1, it is characterised in that described Hall memory detection device use comparison circuit and Enumerator, the voltage that Hall element in motor is launched is made a distinction by comparator circuit, it is simple to rolling counters forward.