CN107065818A - A kind of EPS controllers diagnostic equipment - Google Patents

The invention discloses a kind of EPS controllers diagnostic equipment, including display unit, power subsystem, diagnosis control unit and 5V switch, described power subsystem includes 12V power supplys, 12V and turns 5V modules, 3.7V charge management modules, 3.7V and turn 5V modules, 3.7V to turn 12V modules and 3.7V batteries, described diagnosis control unit includes K lines/LIN line communication modules, CAN line communication modules, MCU module, voltage diagnostic module, voltage detection module, IG signaling modules and diagnosis interface.By the above-mentioned means, the EPS controller diagnostic equipments of the present invention, the Compatible Production Line applying working condition different with real vehicle, realize that producing line demarcation diagnosis and real vehicle demarcation diagnosis are completed on a diagnostic equipment；And a diagnostic device of EPS controller characteristics design is specific to, diagnosis and the parameter demarcated are set according to EPS demand, and equipment operation is convenient, and cost is low, and small volume is easy to carry.

A kind of EPS controllers diagnostic equipment

Technical field

The present invention relates to the technical field of diagnostic device, more particularly to a kind of EPS controllers diagnostic equipment.

Background technology

In the case of the diagnosis of existing diagnostic equipment general diagnostic vehicle various electronic, real vehicle, by OBD to EPS controls Device is diagnosed, and EPS controllers are diagnosed after vehicle ignition, is substantially carried out current state detection, and historical failure code Reading, parameter calibration function is less；In the case of production line, the general production equipment special using producing line carries out demarcation diagnosis.

Existing diagnostic device applying working condition it is compatible bad, it is impossible to meet producing line demarcation diagnosis and real vehicle demarcation diagnosis exist Realized on a diagnostic equipment；And EPS controllers are not specific to, integrated functionality is more, and inconvenient operation, cost is higher, examines Disconnected and demarcation parameter is less, does not apply to the demarcation diagnosis of EPS controllers and requires higher situation.Vehicle point is needed in real vehicle demarcation EPS controllers can just be diagnosed after fire, in the case of vehicle ignition, in fact it could happen that vehicle is right during travelling The situation that EPS controllers are diagnosed or demarcated, if parameter setting mistake, in fact it could happen that turn to risk out of control, security It is not fine；In the case of production line, the general equipment special using producing line carries out demarcation diagnosis, and the volume of equipment is larger, inconvenience Carry or mobile.

And the integrated a variety of functions of diagnostic equipment, cause inconvenient operation, cost is higher；The resource-constrained of diagnostic equipment, collects successfully Can be more, rough diagnosis can only be carried out；It is not the diagnostic equipment of special diagnosis EPS controllers, it is impossible to compatible production status and reality Car situation.

The content of the invention

The present invention solves the technical problem of a kind of EPS controllers diagnostic equipment is provided, Compatible Production Line and real vehicle are not Same applying working condition, realizes that producing line demarcation diagnosis and real vehicle demarcation are diagnosed and completed on a diagnostic equipment；And be specific to The parameter of a diagnostic device of EPS controller characteristics design, diagnosis and demarcation is set according to EPS demand, equipment operation side Just, cost is low, small volume, is easy to carry.

In order to solve the above technical problems, one aspect of the present invention is：There is provided a kind of diagnosis of EPS controllers Instrument, including display unit, power subsystem, diagnosis control unit and 5V switches, described power subsystem include 12V power supplys, 12V Turn 5V modules, 3.7V charge management modules, 3.7V and turn 5V modules, 3.7V to turn 12V modules and 3.7V batteries, described diagnosis control Unit includes K lines/LIN line communication modules, CAN line communication modules, MCU module, voltage diagnostic module, voltage detection module, IG Signaling module and diagnosis interface, described 12V power supplys turn 5V modules with 12V respectively and voltage diagnostic module is connected, described 12V Turn 5V modules respectively with 3.7V charge management modules and 5V switches to be connected, described 3.7V turns 5V modules and is connected and leads to 5V switches Cross 3.7V batteries and turn 12V modules with 3.7V and be connected, described MCU module is examined with display unit, voltage diagnostic module, voltage respectively Module, 5V switches, K lines/LIN line communication modules are surveyed, CAN lines communication module, IG signaling modules are connected with diagnosis interface, described K lines/LIN lines communication module, CAN lines communication module and IG signaling modules is connected with diagnosis interface, and described 3.7V turns 12V moulds Block is connected by IG signaling modules with diagnosis interface.

In a preferred embodiment of the present invention, described display module uses liquid crystal display.

In a preferred embodiment of the present invention, described diagnosis interface is connected with outside controller, described control Device uses EPS controllers.

In a preferred embodiment of the present invention, described diagnosis interface is connected by wire harness with controller.

In a preferred embodiment of the present invention, described 12V power supplys turn 5V modules by 12V voltage are switched into 5V.

In a preferred embodiment of the present invention, 2 interfaces are provided with described 12V power supplys, 12V charging electricity is connect respectively The IG output signals of source and equipment or real vehicle.

In a preferred embodiment of the present invention, described 5V switches output 5V voltages, 5V voltage output prioritizing selections 12V Turn 5V modules, when MCU module detects the 12V power supplys of voltage detecting feedback without input, open 3.7V and turn 5V modules, 5V voltages Power supply is provided to MCU module, display unit and CAN lines communication module.

In a preferred embodiment of the present invention, described MCU module by voltage diagnostic module select 5V power supply come Source.

In a preferred embodiment of the present invention, described 3.7V batteries turn 5V modules to 3.7V and 3.7V turns 12V modules Power supply is provided.

In a preferred embodiment of the present invention, described 3.7V turns 12V modules to K lines/LIN lines communication module and IG letters Number module provides power supply.

The beneficial effects of the invention are as follows：The EPS controller diagnostic equipments of the present invention are attractive in appearance, easy to carry, reliable with structure Property good advantage, production line can be used in and carry out test calibration, and real vehicle carries out signal diagnosis, Compatible Production Line and real vehicle are not Same applying working condition, realizes that producing line demarcation diagnosis and real vehicle demarcation are diagnosed and completed on a diagnostic equipment；And be specific to The parameter of a diagnostic device of EPS controller characteristics design, diagnosis and demarcation is set according to EPS demand, equipment operation side Just, cost is low, small volume, is easy to carry.

Brief description of the drawings

Technical scheme in order to illustrate the embodiments of the present invention more clearly, makes required in being described below to embodiment Accompanying drawing is briefly described, it should be apparent that, drawings in the following description are only some embodiments of the present invention, for For those of ordinary skill in the art, on the premise of not paying creative work, it can also obtain other according to these accompanying drawings Accompanying drawing, wherein：

Fig. 1 is the structured flowchart of a preferred embodiment of EPS controllers diagnostic equipment of the present invention；

Fig. 2 is diagnostic equipment and controller and equipment connection diagram；

Fig. 3 turns the circuit diagram of 5V modules for 12V in diagnostic equipment；

Fig. 4 is the circuit diagram of charge management module in diagnostic equipment；

Fig. 5 turns the circuit diagram of 5V modules for 3.7V in diagnostic equipment；

Fig. 6 turns the circuit diagram of 12V modules for 3.7V in diagnostic equipment；

Fig. 7 is the circuit diagram of CAN line communication modules in diagnostic equipment；

Fig. 8 is the circuit diagram of K lines/LIN line communication modules in diagnostic equipment；

Fig. 9 is the circuit diagram of IG signaling modules in diagnostic equipment.

Embodiment

The technical scheme in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation Example is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, this area is common All other embodiment that technical staff is obtained under the premise of creative work is not made, belongs to the model that the present invention is protected Enclose.

As shown in figure 1, the embodiment of the present invention includes：

A kind of EPS controllers diagnostic equipment, including display unit, power subsystem, diagnosis control unit and 5V switches, described electricity Source unit include 12V power supplys, 12V turn 5V modules, 3.7V charge management modules, 3.7V turn 5V modules, 3.7V turn 12V modules and 3.7V batteries, described diagnosis control unit includes K lines/LIN line communication modules, and CAN line communication modules, MCU module, voltage is examined Disconnected module, voltage detection module, IG signaling modules and diagnosis interface, described 12V power supplys turn 5V modules and voltage with 12V respectively Diagnostic module is connected, and described 12V turns 5V modules and is connected respectively with 3.7V charge management modules and 5V switches, and described 3.7V turns 5V modules are connected with 5V switches and turn 12V modules with 3.7V by 3.7V batteries and are connected, and described MCU module is single with display respectively Member, voltage diagnostic module, voltage detection module, 5V switch, K lines/LIN line communication modules, CAN lines communication module, IG signal modes Block is connected with diagnosis interface, and described K lines/LIN lines communication module, CAN lines communication module and IG signaling modules connects with diagnosis Mouth is connected, and described 3.7V turns 12V modules and is connected by IG signaling modules with diagnosis interface.Wherein, described display module is adopted Use liquid crystal display.

In above-mentioned, described diagnosis interface is connected with outside controller, and described controller uses EPS controllers.Its In, described diagnosis interface is connected by wire harness with controller.

As shown in Fig. 2 diagnostic equipment is connected with controller and equipment or real vehicle IG signals, diagnostic equipment passes through K lines/LIN lines Communication module or CAN lines communication module detection controller state go forward side by side rower determine.

Production line test calibration：Diagnostic equipment is connected with controller and test equipment, diagnostic equipment is communicated by K lines/LIN lines Module or CAN lines communication module detection controller state go forward side by side rower determine；The input vehicle body signal of EPS controllers is mainly wrapped Containing speed, engine speed, igniting etc., controller is electric on IG signal ability meetings are detected, and detecting engine speed just can be just Often work；Test equipment simulation IG signals, engine rotational speed signal, wherein GES, engine rotational speed signal, GES Input is to EPS controllers, and IG signals are input to diagnostic equipment, can be charged to diagnostic equipment, diagnostic equipment can be not in production process Connect and work always in the case of external power source, the IG signals needed for EPS controllers are provided by diagnostic equipment, can control EPS controllers Power-on and power-off during parameter calibration.

Real vehicle is diagnosed：Diagnostic equipment is connected with controller and real vehicle connector, diagnostic equipment passes through K lines/LIN line communication modules Or CAN lines communication module detection controller state go forward side by side rower determine；EPS controllers belong to safety member, real vehicle diagnosis and It need to ensure that car is in halted state during demarcation, so vehicle can be without igniting, now by diagnosing when real vehicle connects diagnostic equipment The power-on and power-off of instrument control EPS controllers, the battery that now power supply of diagnostic equipment is carried by inside is provided, when battery electric quantity is not enough When, it can be charged with external 12V power supplys.Even if vehicle is in fired state, diagnostic equipment is quiet to vehicle by Bus- Speed Monitoring EPS controllers could only be demarcated under state, can both carry out signal diagnosis, vehicle launch demarcation generation can be prevented again Additional risk.

Referring to Fig. 1,12V power supplys turn 5V modules with 12V and voltage diagnostic module is connected, 12V turns 5V modules by 12V power supplys Voltage switch to 5V, the value of 12V power supplys is fed back to MCU module by voltage diagnostic module；12V turns 5V module output signals and meets 5V to open Close and 3.7V charge management modules；5V switch control 5V power supply outputs, turn 5V modules with 12V and 3.7V turn 5V modules and is connected, 5V Output prioritizing selection 12V turns 5V modules, open-minded when MCU module detects the 12V power supplys of voltage diagnostic module feedback without input 3.7V turns 5V modules, and 5V power supplys provide power supply to MCU module, liquid crystal display, CAN lines communication module；3.7V charge management modules are given 3.7V batteries charge；3.7V batteries to 3.7V turn 5V modules, 3.7V turn 12V modules provide power supply, and with voltage detection module phase Even, MCU module detects the voltage of 3.7V batteries by voltage detection module；3.7V turns 12V modules to K lines/LIN line communication modules And IG signaling modules provide power supply；MCU module and voltage detection module, voltage diagnostic module, liquid crystal display, CAN lines communication module, K lines/LIN lines communication module and IG signaling modules are connected, MCU module detected by voltage detection module select 5V power supply come Source, 3.7V battery electric quantity states are detected by voltage diagnostic module, and mould is communicated by CAN lines communication module or K lines/LIN lines The state of block Read Controller or the data that parameter calibration, CAN lines communication module or K lines/LIN line communication modules are carried out to it And 3.7V battery electric quantity states are shown by liquid crystal display, MCU module controls opening and closing for IG signals by IG signaling modules； Diagnosis interface is connected by wire harness with controller.

EPS controllers belong to safety member, if demarcation in the process of moving mistake occurs and is likely to occur steering wheel misoperation Situation（Such as become weigh, lighten, rotation or stuck dangerous situation occur）, need to ensure that car is in when real vehicle is diagnosed and is demarcated Halted state, it is an advantage of the invention that the IG signals of controller are by diagnostic equipment control, it is possible to achieve vehicle is in situation about misfiring Under diagnosis and demarcation to controller.Diagnostic equipment is by diagnosing the engine signal and GES of real vehicle, if detecting car Fast signal is not zero, and diagnostic equipment can only be detected to the information of controller, it is impossible to which controller is demarcated.It is zero in speed In the case of, diagnostic equipment just allows to carry out proving operation to controller.This invention ensure vehicle remain static it is lower could be right EPS controllers are demarcated, it is to avoid real vehicle calibration process produces risk.

The circuit that Fig. 3 turns 5V modules for 12V in diagnostic equipment is referred to, 12V power supplys there are 2 interfaces, 12V charging electricity is connect respectively The IG output signals of source and equipment or real vehicle, circuit is mainly made up of diode, resistance, electric capacity, inductance, power conversion chip, The major function of this circuit is that 12V voltages are switched into 5V, with excessively stream, under-voltage, short-circuit protection function；Two chargings of diagnostic equipment Mouthful give diagnostic equipment charging provide convenience, real vehicle demarcate when if there is diagnostic equipment electricity it is low when, the igniting of vehicle body can be opened Signal charges to diagnostic equipment, improves the convenience that diagnostic equipment is used.

Refer to circuits of the Fig. 4 for 3.7V charge management modules in diagnostic equipment, circuit mainly by diode, resistance, electric capacity, Inductance, power conversion chip composition, the major function of this circuit is that 3.7V batteries 7 are charged, with charging, overvoltage, mistake Stream, short-circuit protection function.

The circuit that Fig. 5 turns 5V modules for 3.7V in diagnostic equipment is referred to, circuit is mainly by diode, resistance, electric capacity, electricity Sense, power conversion chip composition, the major function of this circuit is that 3.7V is turned into 5V, is supplied to MCU13, liquid crystal display 14, CAN communication 15 Electricity, with excessively stream, under-voltage, short-circuit protection function；

The circuit that Fig. 6 turns 12V modules for 3.7V in diagnostic equipment is referred to, circuit is mainly by diode, resistance, electric capacity, inductance, electricity Source conversion chip composition, the major function of this circuit is that 3.7V is turned into 12V, powers, has to K/LIN communications 16, IG signals 17 Excessively stream, under-voltage, short-circuit protection function.

Refer to circuits of the Fig. 7 for CAN line communication modules in diagnostic equipment, circuit dominant resistance, electric capacity, CAN communication chip Composition, the major function of this circuit is CAN communication, the state of diagnosing controller and carries out parameter calibration to controller.

Circuits of the Fig. 8 for K lines/LIN line communication modules in diagnostic equipment is referred to, circuit dominant resistance, electric capacity, K/LIN lead to Believe chip composition, the major function of this circuit is K/LIN communications, the state of diagnosing controller and parameter is carried out to controller Demarcation；

Refer to circuits of the Fig. 9 for IG signaling modules in diagnostic equipment, circuit dominant resistance, electric capacity, diode, triode, relay Device is constituted, and controls the output of IG signals.

The EPS controller diagnostic equipments that the present invention is provided, have the following advantages that compared to prior art：

1, a kind of equipment of demarcation is diagnosed dedicated for EPS controllers, it is simple to operate, it is easy to carry；

2, multiple power sources power supply mode can be with the detection of Compatible Production Line and demarcation and the diagnosis and demarcation of real vehicle；

3, safe, the diagnostic equipment control IG of real vehicle demarcation, and ensure just to allow demarcation in the case of stationary vehicle.

In summary, EPS controller diagnostic equipments of the invention, attractive in appearance, easy to carry, good reliability excellent with structure Point, can be used in production line and carry out test calibration, and real vehicle carries out signal diagnosis, the Compatible Production Line use different with real vehicle Operating mode, realizes that producing line demarcation diagnosis and real vehicle demarcation diagnosis are completed on a diagnostic equipment；And it is specific to EPS controllers The parameter of a diagnostic device of characteristic design, diagnosis and demarcation is set according to EPS demand, and equipment operation is convenient, and cost is low, Small volume, is easy to carry.

Embodiments of the invention are the foregoing is only, are not intended to limit the scope of the invention, it is every to utilize this hair Equivalent structure or equivalent flow conversion that bright description is made, or directly or indirectly it is used in other related technology necks Domain, is included within the scope of the present invention.