CN102353545A

CN102353545A - Electronic control unit (ECU) test system of anti-locked braking system (ABS) of vehicle

Info

Publication number: CN102353545A
Application number: CN2011102587327A
Authority: CN
Inventors: 张凤洪
Original assignee: DINGJIA (TIANJIN) AUTOMOBILE ELECTRONICS Co Ltd
Current assignee: DINGJIA (TIANJIN) AUTOMOBILE ELECTRONICS Co Ltd
Priority date: 2011-09-02
Filing date: 2011-09-02
Publication date: 2012-02-15

Abstract

The invention relates to an electronic control unit (ECU) test system of an anti-locked braking system (ABS) of a vehicle. The ECU test system comprises a frame, a driving motor, an inertia wheel, wheel pressing mechanisms, wheels and a wheel air channel mechanism, wherein the inertia wheel which is driven by the driving motor is arranged on the frame; four groups of wheel pressing mechanisms are symmetrically arranged on the frame outside an outer edge of the inertia wheel; and the four groups of wheel pressing mechanisms can drive four wheels which are arranged on the four groups of wheel pressing mechanisms to be in pressing connection with the outer edge of the inertia wheel. By adoption of the ECU test system, in the whole test process, the vehicle is not required to be driven out, so that gasoline is saved, and a test period is shortened; and the ECU test system can test various types of ECUs of the ABS systems and is quite convenient.

Description

The ECU of vehicle ABS system test macro

Technical field

The present invention relates to vehicle ABS system test equipment field, the especially a kind of vehicle ABS ECU of system test macro.

Background technology

ABS system in the automobile is extremely important for stable driving, when snow sky or emergency brake, can reduce the phenomenon that the vehicle whipping breaks away effectively, has guaranteed vehicle and driver's safety.Core component in the ABS system is ECU; The wheel cylinder of its wheel speed sensors through wire harness and four-wheel, four-wheel and Displaying Meter etc. are connected; Wheel speed sensors with four-wheel is output as feedback signal; The working pressure of distributing the wheel cylinder of four-wheel; Make wheel the situation of locking can not occur, improved the adhesion of wheel ground.

Must be before ECU dispatches from the factory through detailed test; To guarantee himself quality; Comprise with different brackets voltage being that input, control electric current and voltage are output ground ageing tester etc. in the testing apparatus commonly used; The said equipment can detect the ageing-resistant performance of ECU through the test that constantly repeats; Do not have ready-made testing of equipment but detect the control procedure of ECU when tire is about to locking, can only carry out the simulation test of the wheel lock up on road surface through mounted vehicle.

Summary of the invention

The objective of the invention is to overcome the deficiency of prior art, a kind of simple in structure, test mode ECU of vehicle ABS system test macro flexibly is provided.

The technical scheme that the present invention takes is:

A kind of vehicle ABS ECU of system test macro; It is characterized in that: comprise framework; Drive motor; Flying wheel; The wheel hold-down mechanism; Wheel and wheel gas circuit mechanism; Flying wheel by drive motor drives is installed on the framework; Symmetry is installed four groups of wheel hold-down mechanisms on the framework in the flying wheel outer rim outside; Four groups of wheel hold-down mechanisms can drive the outer rim that four pressure wheels installing on it are connected on flying wheel; The oil-in of the wheel cylinder of four wheels connects master cylinder through the ECU valve body; Master cylinder connects the oil-out of the wheel cylinder of four wheels through the brake oil can; Four groups of wheel hold-down mechanisms are driven by four wheel gas circuit mechanisms; The air intake opening of wheel gas circuit mechanism connects the drive end of master cylinder, master cylinder; Wheel gas circuit mechanism; The wheel speed sensors of four wheels; The interface of ECU is connected control module with the pressure transducer that the ECU valve body is adorned.

And said wheel hold-down mechanism comprises clamping cylinder and oscillating deck, and the end hinge of oscillating deck is contained in the framework surface, and the oscillating deck front end is installed wheel, cuts with scissors on the side of oscillating deck front end and adorns the piston rod that drives cylinder on the frame that frames up.

And; Said wheel gas circuit mechanism comprises flow control valve and electromagnetic valve of gas circuit; One end of flow control valve connects source of the gas, and the other end of flow control valve connects an end of electromagnetic valve of gas circuit, and the other end of electromagnetic valve of gas circuit connects the driving cylinder in the wheel hold-down mechanism.

And said pressure transducer comprises two total pump pressure force transducers being connected in parallel on respectively between master cylinder and the ECU valve body oil-in on two oil pipes, is installed in four branch pump pressure sensors on four oil pipes of ECU valve body oil-out.

And, the gas filter of connecting between said four wheel gas circuit mechanisms and the source of the gas, one tunnel output of this gas filter connects the cylinder of master cylinder through the master cylinder electromagnetic valve of gas circuit.

And, the wheel cylinder oil-out of said each wheel and exhaust solenoid valve and the oil-gas separator of all connecting between the oil can that brake.

And; Said control module comprises central control module, display module and key-press module; The input/output interface of central control module connects display module, key-press module, the exhaust solenoid valve of four-wheel, the electromagnetic valve of gas circuit of four-wheel, four branch pump pressure sensors, two total pump pressure force transducers, the interface of ECU and the wheel speed sensors of four-wheel, and ECU also connects the wheel cylinder of the wheel speed sensors and the four-wheel of four-wheel.

Advantage of the present invention and good effect are:

Among the present invention; Flying wheel rotates; Four wheel hold-down mechanisms are connected on four pressure wheels on the flying wheel and with one of which and play rotation; Simulation wheel cruising; When brake; When in case wheel occurring and being about to locking; When the wheel speed sensors output earth signal that ECU detects four-wheel is reduced to certain value; The wheel cylinder adjustment braking strength of control four-wheel; Make four-wheel keep rotating; The output of the wheel speed sensors of four-wheel at this moment; The output of ECU steering order; Working state of system parameter in the ECU; Two total pump pressure force transducer outputs; The display module that the output of four branch pump pressure sensors is transferred to control module shows; Can also be transferred to host computer through central control module; On the liquid crystal display of host computer, show or storage; Print; Whole test process need not to drive to go out, and has saved gasoline, has reduced test period; Can test the ECU of various types of ABS system, very convenient.

Description of drawings

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the structural representation that Fig. 1 removes valve;

Fig. 3 is the structural representation of oil circuit and gas circuit;

Fig. 4 is the block scheme of control module;

Fig. 5 is the vertical view of flying wheel, wheel and wheel hold-down mechanism.

Embodiment

Below in conjunction with embodiment, the present invention is further specified, following embodiment is illustrative, is not determinate, can not limit protection scope of the present invention with following embodiment.

A kind of vehicle ABS ECU of system test macro; Shown in Fig. 1～5; Innovation of the present invention is: comprise framework 13; Drive motor 14; Flying wheel 18; The wheel hold-down mechanism; Wheel 10 and wheel gas circuit mechanism 21; The driving wheel of being adorned on the drive motor of installing in the framework 15 drives the coaxial mounted flywheel 17 of flying wheel through belt 16; Symmetry is installed four groups of wheel hold-down mechanisms on the framework in the flying wheel outer rim outside; Four groups of wheel hold-down mechanisms can drive the outer rim that four pressure wheels installing on it are connected on flying wheel; The oil-in 25 of the wheel cylinder 9 of four wheels connects master cylinder 23 through ECU valve body 24; Master cylinder connects the oil-out 26 of the wheel cylinder of four wheels through the brake oil can; Four groups of wheel hold-down mechanisms are driven by four wheel gas circuit mechanisms; The drive end that the air intake opening of wheel gas circuit mechanism connects the cylinder 22 that drives master cylinder through master cylinder electromagnetic valve of gas circuit 31, master cylinder; Wheel gas circuit mechanism; The wheel speed sensors of four wheels; The interface of ECU is connected control module with the pressure transducer that the ECU valve body is adorned.

One shell 1 can be installed on framework, and symmetry is installed two valve 2 in a side of shell, and a transparent window 3 is installed on each valve, and the oil circuit equipment 20 that wheel gas circuit mechanism and foregoing description relate to is installed on the support 4 that frame facet is in the enclosure adorned.

In the present embodiment:

The wheel hold-down mechanism as shown in Figure 2; Comprise clamping cylinder 6 and oscillating deck 8; The end of oscillating deck hinge is contained on the framework surface institute pedestal of adorn 11, and the oscillating deck front end is installed wheel, cuts with scissors the piston rod 7 that the frame upper fixed seat 5 that frames up is adorned the driving cylinder on the side of oscillating deck front end.

Wheel gas circuit mechanism as shown in Figure 3; Comprise flow control valve 32 and electromagnetic valve of gas circuit 33; One end of flow control valve connects source of the gas through gas filter, and the other end of flow control valve connects an end of electromagnetic valve of gas circuit, and the other end of electromagnetic valve of gas circuit connects the driving cylinder in the wheel hold-down mechanism.

Pressure transducer comprises two total pump pressure force transducers 30 being connected in parallel on respectively between master cylinder and the ECU valve body oil-in on two oil pipes, is installed in four the branch pump pressure sensors 28 that are communicated with four oil pipes on the fuel feeding valve body 29 on the ECU valve body oil-out.

The wheel cylinder oil-out 26 of each wheel and brake all connect between the oil can exhaust solenoid valve 27 and the oil-gas separator of setting-ins in the framework upper bed-plate 12.

The block scheme of control module as shown in Figure 4; Comprise central control module, display module and key-press module; The input/output interface of central control module connects display module, key-press module, the exhaust solenoid valve of four-wheel, the electromagnetic valve of gas circuit of four-wheel, four branch pump pressure sensors, two total pump pressure force transducers, the interface of ECU and the wheel speed sensors of four-wheel, and ECU also connects the wheel cylinder of the wheel speed sensors and the four-wheel of four-wheel.

The structure of flying wheel can be processed as shown in Figure 5; The part that contacts with four wheels is outer through bigger; Remainder is outer through less weight with the reduction flying wheel; Because the flying wheel own wt is still very big, can be heavier when rotating, in order to have improved the support strength of framework; Many inclinations, vertical reinforcement 19 are installed on the framework that the flying wheel position is installed; What motor used is electromagnetic adjustable speed motor, and four wheels can adopt drum brakes, also can adopt disk type brake.

Claims

1. the ECU of vehicle ABS system test macro; It is characterized in that: comprise framework; Drive motor; Flying wheel; The wheel hold-down mechanism; Wheel and wheel gas circuit mechanism; Flying wheel by drive motor drives is installed on the framework; Symmetry is installed four groups of wheel hold-down mechanisms on the framework in the flying wheel outer rim outside; Four groups of wheel hold-down mechanisms can drive the outer rim that four pressure wheels installing on it are connected on flying wheel; The oil-in of the wheel cylinder of four wheels connects master cylinder through the ECU valve body; Master cylinder connects the oil-out of the wheel cylinder of four wheels through the brake oil can; Four groups of wheel hold-down mechanisms are driven by four wheel gas circuit mechanisms; The air intake opening of wheel gas circuit mechanism connects the drive end of master cylinder, master cylinder; Wheel gas circuit mechanism; The wheel speed sensors of four wheels; The interface of ECU is connected control module with the pressure transducer that the ECU valve body is adorned.

2. the vehicle ABS ECU of system test macro according to claim 1; It is characterized in that: said wheel hold-down mechanism comprises clamping cylinder and oscillating deck; The end hinge of oscillating deck is contained in the framework surface; The oscillating deck front end is installed wheel, cuts with scissors on the side of oscillating deck front end and adorns the piston rod that drives cylinder on the frame that frames up.

3. the vehicle ABS ECU of system test macro according to claim 1; It is characterized in that: said wheel gas circuit mechanism comprises flow control valve and electromagnetic valve of gas circuit; One end of flow control valve connects source of the gas; The other end of flow control valve connects an end of electromagnetic valve of gas circuit, and the other end of electromagnetic valve of gas circuit connects the driving cylinder in the wheel hold-down mechanism.

4. the vehicle ABS ECU of system test macro according to claim 1 is characterized in that: said pressure transducer comprises two total pump pressure force transducers being connected in parallel on respectively between master cylinder and the ECU valve body oil-in on two oil pipes, is installed in four branch pump pressure sensors on four oil pipes of ECU valve body oil-out.

5. the vehicle ABS ECU of system test macro according to claim 1 is characterized in that: the gas filter of connecting between said four wheel gas circuit mechanisms and the source of the gas, one tunnel output of this gas filter connects the cylinder of master cylinder through the master cylinder electromagnetic valve of gas circuit.

6. according to any described vehicle ABS ECU of the system test macro of claim 1～5, it is characterized in that: the wheel cylinder oil-out of said each wheel and exhaust solenoid valve and the oil-gas separator of all connecting between the oil can that brake.

7. the vehicle ABS ECU of system test macro according to claim 6; It is characterized in that: said control module comprises central control module, display module and key-press module; The input/output interface of central control module connects display module, key-press module, the exhaust solenoid valve of four-wheel, the electromagnetic valve of gas circuit of four-wheel, four branch pump pressure sensors, two total pump pressure force transducers, the interface of ECU and the wheel speed sensors of four-wheel, and ECU also connects the wheel cylinder of the wheel speed sensors and the four-wheel of four-wheel.