CN105799614A - One-key starting system power control circuit and method - Google Patents
One-key starting system power control circuit and method Download PDFInfo
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- CN105799614A CN105799614A CN201410845760.2A CN201410845760A CN105799614A CN 105799614 A CN105799614 A CN 105799614A CN 201410845760 A CN201410845760 A CN 201410845760A CN 105799614 A CN105799614 A CN 105799614A
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Abstract
The invention discloses a one-key starting system power control circuit which comprises a starting switch, a first controller connected with the starting switch, a second controller connected with the starting switch, a first and gate for receiving power-on indication signals from the first controller and the second controller and performing and calculation, a second and gate for receiving power-off indications from the first controller and the second controller and performing and calculation, a state latching circuit for obtaining the state level of a one-key starting system power source and performing latching according to output results of the first and gate and the second and gate, and a driving circuit for controlling on-off of a starting relay according to the state level of the one-key starting system power source output by a latch. The invention correspondingly discloses a one-key starting system power control method. According to the one-key starting system power control circuit and method, the one-key starting system output power safety can be improved, and therefore the driving safety is improved.
Description
Technical field
The invention belongs to the one-key start system regions of passenger car, particularly relate to one-key start system power supply control circuit and method.
Background technology
One-key start system (PassiveEntryPassiveStart, PEPS) has been widely used in fuel vehicle, and it is tradition firing key and ignition lock the newly selected as an alternative, and driver only need to press startup button or switch, can complete engine start.It is easy to operate, safety, fashion, has begun to be widely used in domestic and international intermediate car.
Power supply controls an output critical function as one-key start system, when driving, it is desirable to provide stable power supply controls.Provided that unstable power supply controls, then in the process of driving, there will be very big potential safety hazard.
In current one-key start system, being much adopt single microprocessor (MCU) to carry out power supply control, in this case, if this Micro-processor MCV breaks down, then the power supply of PEPS will the control instruction of output error.Such as, when at driving conditions, now the power supply status of PEPS should be in ON state, and electromotor is in starting state；If now Micro-processor MCV breaks down, the instruction of output error, make the power supply status of PEPS fall back on OFF state, then the mains power of automobile can be made to disappear, then braking or turning to there will be power-assisted deficiency, brings the danger of driving.
Summary of the invention
The technical problem to be solved is in that, it is provided that a kind of one-key start system power supply control circuit and method, it is provided that the power supply of safety controls, and reduces in driving conditions owing to certain microprocessor of PEPS row brought that breaks down comes dangerous.
For solving above-mentioned technical problem, the embodiment of the present invention provides a kind of one-key start system power supply control circuit, including:
Starting switch；
First controller, is connected with described starting switch, is used for determining current power state, and exports corresponding first electric power starting indication signal and the first power-off indication signal；
Second controller, is connected with described starting switch, is used for determining current power state, and exports corresponding second source unlatching indication signal and second source closedown indication signal；
First and door, it is connected with described first controller and second controller respectively, receives described first electric power starting instruction, second source opens indication signal, carry out and calculating, it is thus achieved that electric power starting indication signal；
Second and door, it is connected with described first controller and second controller respectively, receives described first power-off instruction, second source closes indication signal, carry out and calculating, it is thus achieved that power-off indication signal；
State latching circuit, is connected with door with door and second with described first, receives described electric power starting indication signal, power-off indication signal, it is thus achieved that the state level of described one-key start system power supply, and latches；
Drive circuit, is connected with described state latching circuit and is connected starting relay, the state level according to the one-key start system power supply that described latch exports, and controls the closedown of described starting relay.
Preferably, described current power state includes: rebooting status, ON state, OFF state and switching state, described state level includes high level and low level；Described starting relay includes: IGN1 relay, IGN2 relay, ACC relay, STARTER relay.
Preferably, be further provided with between described second and door and state latching circuit one or, described second is connected described or door first input end with the outfan of door, described or door the second input connects a plant-wide emergency shutdown signal, and described or door outfan connects the input of described state latching circuit.
Preferably, the outfan of described drive circuit is connected with described first controller and second controller by diagnosing cable, for the state level of described one-key start system power supply is sent to described first controller and second controller, and stores.
Preferably, first electric power starting indication signal of described first controller output is that an ACC opens indication signal, described first power-off indication signal is that an ACC closes indication signal, it is that the 2nd ACC opens indication signal that the second source of described second controller output opens indication signal, and it is that the 2nd ACC closes indication signal that described second source closes indication signal；Or
First electric power starting indication signal of described first controller output is that an IGN1 opens indication signal, described first power-off indication signal is that an IGN1 closes indication signal, it is that the 2nd IGN1 opens indication signal that the second source of described second controller output opens indication signal, and it is that the 2nd IGN1 closes indication signal that described second source closes indication signal；
First electric power starting indication signal of described first controller output is that an IGN2 opens indication signal, described first power-off indication signal is that an IGN2 closes indication signal, it is that the 2nd IGN2 opens indication signal that the second source of described second controller output opens indication signal, and it is that the 2nd IGN2 closes indication signal that described second source closes indication signal；
First electric power starting indication signal of described first controller output is that a STARTER opens indication signal, described first power-off indication signal is that a STARTER closes indication signal, it is that the 2nd STARTER opens indication signal that the second source of described second controller output opens indication signal, and it is that the 2nd STARTER closes indication signal that described second source closes indication signal.
Preferably, described startup button, drive circuit are respectively provided with master-slave redundancy structure, and described first controller and described second controller are connected by the communications cable.
Preferably, farther include power circuit, comprising:
First fuse, its first end connects battery feed, and the second end connects the first diode cathode, connects the first filter capacitor, and power to electronic load between described first diode cathode and ground；
Second fuse, its first end connects battery feed, second end connects the second diode cathode, the second filter capacitor is connected between described second diode cathode and ground, described second diode cathode connects a transformator, it is connected the 3rd filter capacitor between described transformator outfan and ground, and powers to the first controller and second controller；
3rd diode, its positive pole connects described first diode cathode, and its negative pole connects the negative pole of described second diode；
4th diode, its positive pole connects the positive pole of described second diode, and its negative pole connects the negative pole of described first diode；
Wherein, described first diode, the second diode conducting voltage less than the conducting voltage of described 3rd diode, the 4th diode, the second end of described first fuse connects electronic steering column.
Correspondingly, the another aspect of the embodiment of the present invention additionally provides a kind of one-key start system power supply control method, comprises the steps:
In the first controller according to the signal of starting switch, one-key start system power supply current state level and from the signal of VSC, generate the first electric power starting instruction, the first power-off indication signal and export；
In second controller according to the signal of starting switch, one-key start system power supply current state level and from the signal of VSC, generate that second source opens instruction, second source is closed indication signal and also exported；
Described first electric power starting instruction, second source are opened indication signal and carried out and calculating, it is thus achieved that electric power starting indication signal；
Described first power-off instruction, second source are closed indication signal and carried out and calculating, it is thus achieved that power-off indication signal；
According to described electric power starting indication signal, power-off indication signal, confirm the state of described one-key start system power supply, and latch；
State according to the one-key start system power supply that described latch confirms, controls the closedown of starting relay.
Preferably, according to described electric power starting indication signal, power-off indication signal, confirm the state of described one-key start system power supply, and farther include before latching step:
Described power-off indication signal and a plant-wide emergency shutdown signal are carried out or computing.
Preferably, farther include:
Described first controller and second controller, according to the signal from starting switch, the feedback signal from VSC, it is determined that current power state.
Preferably, farther include:
Described first controller and second controller, by determined current power state, compare with the state level of the one-key start system power supply carrying out driving circuit, according to predetermined synopsis, determine that whether described one-key start system power supply is normal, if it is judged that be abnormal, then point out the DTC of correspondence.
Preferably, farther include:
Described first controller is or/and described second controller after restart, carries out following steps:
Judge the status signal from electronic steering column ESCL, if the status signal of described electronic steering column ESCL is blocking, it is determined that current power supply status is OFF state；
If the status signal of described electronic steering column ESCL is non-for blocking, then judge that whether described IGN1 relay is before restarting already at state of activation, if result is yes, it is determined that current power supply status is ON state；Otherwise determine that current power supply is OFF state；
If the status signal of described electronic steering column ESCL and the feedback signal of institute's IGN1 relay can not be obtained, then according to the power supply status of storage in the RAM in described first controller and/or second controller, it is determined that current power supply status is the power supply status of storage in described RAM.
Implement the present invention, there is following beneficial effect:
First, in an embodiment of the present invention, in the power control circuit of one-key start system, two controllers are set, and the output of each controller is double-channel signal (open indication signal and close indication signal), and adopt two with door and latch cicuit, it is ensured that when the output of a controller is broken down or restarts wherein, the final output of latch cicuit is also correct, is extremely secure；
Secondly, these two controllers can according to its current twin-channel output and the state level carrying out driving circuit feedback, according to the synopsis pre-established, confirm that the power supply of current one-key start system controls whether there is fault, then point out the DTC of correspondence if there is fault；
Again, by two controllers wherein one or two when restarting, judge according to predetermined judgement step, it is ensured that the correctness of its out-put supply after restart；
And, starting switch, drive circuit all adopt Redundancy Design, and adopt the power circuit of two-way independence to be powered, it is possible to improve the safety of this one-key start system power supply control circuit further, thus ensureing the safety of driving conditions.
Accompanying drawing explanation
In order to be illustrated more clearly that the embodiment of the present invention or technical scheme of the prior art, the accompanying drawing used required in embodiment or description of the prior art will be briefly described below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the premise not paying creative work, it is also possible to obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the circuit theory diagrams of one-key start system power supply control circuit provided by the invention；
Fig. 2 is the circuit theory diagrams of local circuit in Fig. 1；
Fig. 3 is the circuit theory diagrams of the power circuit in Fig. 1；
Fig. 4 is the main flow chart of one-key start system power supply control method provided by the invention.
Detailed description of the invention
Below in conjunction with the accompanying drawing in the embodiment of the present invention, the technical scheme in the embodiment of the present invention is clearly and completely described, it is clear that described embodiment is only a part of embodiment of the present invention, rather than whole embodiments.Based on the embodiment in the present invention, the every other embodiment that those of ordinary skill in the art obtain under not making creative work premise, broadly fall into the scope of protection of the invention.
As shown in Figure 1 to Figure 3, it is shown that the circuit theory diagrams of one-key start system power supply control circuit provided by the invention.In this embodiment, this one-key start system power supply control circuit includes:
Starting switch, the starting switch in figure adopts Redundancy Design, includes two paths of signals: L_SSBSW1 and L_SSBSW2, if wherein a road signal breaks down, namely an other road signal can transmit the information whether this switch is pressed；
First controller, see the uC1 in figure, it is connected with described starting switch by logic loader (Logicinput), for determining current power state, and export corresponding first electric power starting indication signal and the first power-off indication signal, wherein this logic loader judges whether described starting switch is pressed, and generates corresponding logical signal, and inputs to the first controller.Such as, when starting switch is pressed, then this logic loader receives the information from L_SSBSW1 and/or L_SSBSW2, generates " 1 " signal to the first controller, and when starting switch is not pressed, then what this logic loader generated is " 0 " signal；This first controller can according to the described signal from starting switch and the feedback signal from such as VSC, determine current power state, this current power state includes: rebooting status, ON state, OFF state and switching state, it is understandable that, when current power state is rebooting status, its corresponding first electric power starting indication signal is " 0 " and the first power-off indication signal is " 0 "；When current state is ON state, its corresponding first electric power starting indication signal is " 1 " and the first power-off indication signal is " 0 "；When current state is OFF state, its corresponding first electric power starting indication signal is " 0 " and the first power-off indication signal is " 1 "；When current state is switching state, then its corresponding first electric power starting indication signal is for being changed with the first power-off indication signal；
Second controller, see the uC2 in figure, it is connected with described starting switch by another logic loader, for determining current power state, and export corresponding second source unlatching indication signal and second source closedown indication signal, wherein, current power state is similar with the corresponding relation of corresponding second source unlatching indication signal and second source closedown indication signal and the first controller, no longer describes in detail；Wherein, described first controller and described second controller are connected by the communications cable (Comm line), can be used for a controller wherein and notify another controller when breaking down；
First and door, see " & " door in figure or " AND ", be connected with described first controller and second controller respectively, receive described first electric power starting instruction, second source opens indication signal, carry out and calculating, it is thus achieved that electric power starting indication signal；
Second and door, it is connected with described first controller and second controller respectively, receives described first power-off instruction, second source closes indication signal, carry out and calculating, it is thus achieved that power-off indication signal；
State latching circuit, see " RSLatch " in figure, it is connected with door with door and second with described first, receive described electric power starting indication signal, power-off indication signal, obtain the state level of described one-key start system power supply, and latch, wherein this state level includes high level and low level, specifically, when the value of first with door output is " 1 ", and second and the value of door output when being " 0 ", the state level of the power supply of the one-key start system then obtained at state latching circuit is high level, when the value of first with door output is " 0 ", and second and the value of door output when being " 1 ", the state level of the power supply of the one-key start system then obtained at state latching circuit is low level；
Drive circuit, is connected with described state latching circuit and is connected starting relay, the state level according to the one-key start system power supply that described latch exports, control the closedown of described starting relay, specifically, when this state level is high level, then the starting relay adhesive of its connection；When this state level is low level, then the starting relay protection off-state of its connection；It is understood that this drive circuit can adopt two in the drawings, it is achieved master-slave redundancy structure.
It can be seen that described starting relay includes: IGN1 relay, IGN2 relay, ACC relay, STARTER relay.
Correspondingly, first electric power starting indication signal of described first controller output can be that the first ACC opens indication signal " ACC_On1 ", described first power-off indication signal is that an ACC closes indication signal " ACC_Off1 ", it is that the 2nd ACC opens indication signal " ACC_On2 " that the second source of described second controller output opens indication signal, and it is that the 2nd ACC closes indication signal " ACC_Off2 " that described second source closes indication signal；Or
First electric power starting indication signal of described first controller output is that an IGN1 opens indication signal " IGN1_On1 ", described first power-off indication signal is that an IGN1 closes indication signal " IGN1_Off1 ", it is that the 2nd IGN1 opens indication signal " IGN1_On2 " that the second source of described second controller output opens indication signal, and it is that the 2nd IGN1 closes indication signal " IGN1_Off2 " that described second source closes indication signal；
First electric power starting indication signal of described first controller output is that an IGN2 opens indication signal " IGN2_On1 ", described first power-off indication signal is that an IGN2 closes indication signal " IGN2_Off1 ", it is that the 2nd IGN2 opens indication signal " IGN2_On2 " that the second source of described second controller output opens indication signal, and it is that the 2nd IGN2 closes indication signal " IGN2_Off2 " that described second source closes indication signal；
First electric power starting indication signal of described first controller output is that a STARTER opens indication signal " STARTER_On1 ", described first power-off indication signal is that a STARTER switch closes indication signal " STARTER_Off1 ", it is that the 2nd STARTER opens indication signal " STARTER_On2 " that the second source of described second controller output opens indication signal, and it is that the 2nd STARTER closes indication signal " STARTER_Off1 " that described second source closes indication signal.
Wherein, one or (or door) it is further provided with between described second and door and state latching circuit, described second is connected described or door first input end with the outfan of door, described or door the second input connects a plant-wide emergency shutdown signal, and described or door outfan connects the input of described state latching circuit；It is somebody's turn to do or door by arranging, it is possible to make the state level of the power supply of described one-key start system become " OFF " state (namely state level becomes low level) urgent when, thus disconnecting corresponding relay.
Meanwhile, the outfan of described drive circuit is connected with described first controller and second controller by diagnosing cable, for the state level of described one-key start system power supply is sent to described first controller and second controller, and stores.
Described first controller and second controller, by determined current power state, compare with the state level of the one-key start system power supply carrying out driving circuit, according to predetermined synopsis, determine that whether described one-key start system power supply is normal, if it is judged that be abnormal, then according to the DTC that the result prompting of diagnosis is corresponding.
Specifically synopsis is referred to shown in table 1 below.
Upper table lists one-key start system and is under normal table condition and switching condition, the synopsis of various diagnostic results.According to current first controller and the unlatching indication signal of second controller output, closedown indication signal, and the state level carrying out driving circuit received, then may determine that whether the power circuit of now one-key start system is normal.Such as in " OFF " state, now the unlatching indication signal of the first controller and second controller output is 0, closing indication signal is 1, then known according to figure 1 above is introduced, under normal circumstances, then by first with door obtain result be 0, second with door obtain result be 1, then the output of drive circuit should be high level.Therefore if now the state level of drive circuit feedback is low level (Low), then illustrate that now circuit is normal, then the result diagnosed is " passing through "；If now the state level of drive circuit feedback is high level (High), then illustrate that now circuit is abnormal, it may be possible to be shorted to power supply, just there will be high level, then the result diagnosed is " losing efficacy: be shorted to power supply "；The diagnosis process of other each states is similar, is not described in detail.
As it is shown on figure 3, be the detail view of the power circuit of one-key start system power supply control circuit, wherein, this power circuit includes:
First fuse Fu1, its first end connects battery feed (VBAT_LOAD), and the second end connects the first diode D1 positive pole, connects the first filter capacitor C1, and power (LOAD_VBAT) to electronic load between described first diode D1 negative pole and ground；
Second fuse Fu2, its first end connects battery feed (VBAT_CPU), second end connects the second diode D2 positive pole, the second filter capacitor C2 is connected between described second diode D2 negative pole and ground, described second diode D2 negative pole connects a transformator (15V becomes 5V), it is connected the 3rd filter capacitor C3 between described transformator outfan and ground, and powers (Vcc) to the first controller and second controller；
3rd diode D3, its positive pole connects described first diode D1 positive pole, and its negative pole connects the negative pole of described second diode D2；
4th diode D4, its positive pole connects the positive pole of described two or two pole D2 pipe, and its negative pole connects the negative pole of described first diode D1；
Wherein, described first diode D1, the second diode D2 conducting voltage (such as 0.3V) less than as described in the 3rd diode D3, the 4th diode D4 conducting voltage (such as 0.7V), described first fuse Fu1 second end connect electronic steering column (VBAT_ESCL).
When the first fuse and the second fuse are all normal, due to the first diode D1 and the second equal forward conduction of diode D2, and the 3rd diode D3 and the four diode D4 is all not turned on, therefore a road power supply (VBAT_LOAD) of accumulator is powered to electronic load by the first fuse, the first diode D1；And another road power supply (VBAT_CPU) of electric storage means is powered to the first controller and second controller by the second fuse, the second diode D2, transformator；
When the first fuse and the second fuse, one of them is blown, then accumulator can be passed through the fuse that is not blown and powers to electronic load and the first controller and second controller.Such as, when the first fuse is blown, then the second diode D2 and the four diode D4 conducting, and the first diode D1 and the three diode D3 is not turned on, thus the power supply of accumulator flows to electronic load through the second fuse, the 4th diode D4, meanwhile, the power supply of this accumulator is powered to the first controller and second controller by the second fuse, the second diode D2, transformator.
From the aforegoing it can be seen that by arranging duplex feeding power supply in above-mentioned power circuit, after one of them fuse is blown, without affecting the accumulator power supply to electronic load and the first controller and second controller, substantially increase the safety of power supply.
As shown in Figure 4, it is shown that the main flow chart of one-key start system power supply control method provided by the invention, it realizes in one-key start system power supply control circuit disclosed for such as Fig. 1 to Fig. 3.In this embodiment, this power control method comprises the steps:
Step S10, in the first controller according to the signal of starting switch, one-key start system power supply current state level and from the signal of VSC, generate the first electric power starting instruction, the first power-off indication signal and export；In second controller according to the signal of starting switch, one-key start system power supply current state level and from the signal of VSC, generate that second source opens instruction, second source is closed indication signal and also exported；
Step S12, opens indication signal carry out described first electric power starting instruction, second source and calculating, it is thus achieved that electric power starting indication signal；Described first power-off instruction, second source are closed indication signal and carried out and calculating, it is thus achieved that power-off indication signal；
Step S14, according to described electric power starting indication signal, power-off indication signal, it is thus achieved that the state level of described one-key start system power supply, and latches；
Step S16, the state level according to the one-key start system power supply that described latch obtains, control the closedown of starting relay.
Farther include: farther included before described step S14:
Described power-off indication signal and a plant-wide emergency shutdown signal are carried out or computing, thus making the state level of the power supply of described one-key start system become " OFF " state urgent when, thus disconnecting corresponding relay.
Wherein, farther include in step slo:
Described first controller and second controller, according to the signal from starting switch, the feedback signal from VSC, it is determined that current power state.
Wherein, farther include in step slo:
Described first controller and second controller, by determined current power state, compare with the state level of the one-key start system power supply carrying out driving circuit, according to predetermined synopsis (can refer to shown in table 1), determine that whether described one-key start system power supply is normal, if it is judged that be abnormal, then point out the DTC of correspondence.
Wherein, farther include:
When described first controller or and described second controller in one or two after restart, according to the size of priority, following steps can be carried out respectively:
Judge the status signal from electronic steering column ESCL, if the status signal of described electronic steering column ESCL is blocking, it is determined that current power supply status is OFF state；
If the status signal of described electronic steering column ESCL is non-for blocking, then judge that whether described IGN1 relay is before restarting already at state of activation (being namely in attracting state), if result is yes, it is determined that current power supply status is ON state；Otherwise determine that current power supply is OFF state；
If the status signal of described electronic steering column ESCL and the feedback signal of institute's IGN1 relay can not be obtained, then according to the power supply status of storage in the RAM in described first controller and/or second controller, it is determined that current power supply status is the power supply status of storage in described RAM.
More details can refer to the aforementioned explanation to Fig. 1 to Fig. 3, is not described in detail at this.
Implement the present invention, there is following beneficial effect:
First, in an embodiment of the present invention, in the power control circuit of one-key start system, two controllers are set, and the output of each controller is double-channel signal (open indication signal and close indication signal), and adopt two with door and latch cicuit, it is ensured that when the output of a controller is broken down or restarts wherein, the final output of latch cicuit is also correct, is extremely secure；
Secondly, these two controllers can according to its current twin-channel output and the state level carrying out driving circuit feedback, according to the synopsis pre-established, confirm that the power supply of current one-key start system controls whether there is fault, then point out the DTC of correspondence if there is fault；
Again, by two controllers wherein one or two when restarting, judge according to predetermined judgement step, it is ensured that the correctness of its out-put supply after restart；
And, starting switch, drive circuit all adopt Redundancy Design, and adopt the power circuit of two-way independence to be powered, it is possible to improve the safety of this one-key start system power supply control circuit further, thus ensureing the safety of driving.
Above disclosed it is only one preferred embodiment of the present invention, certainly can not limit the interest field of the present invention, the equivalent variations therefore made according to the claims in the present invention with this, still belong to the scope that the present invention contains.
Claims (12)
1. an one-key start system power supply control circuit, it is characterised in that including:
Starting switch；
First controller, is connected with described starting switch, is used for determining current power state, and exports corresponding first electric power starting indication signal and the first power-off indication signal；
Second controller, is connected with described starting switch, is used for determining current power state, and exports corresponding second source unlatching indication signal and second source closedown indication signal；
First and door, it is connected with described first controller and second controller respectively, receives described first electric power starting instruction, second source opens indication signal, carry out and calculating, it is thus achieved that electric power starting indication signal；
Second and door, it is connected with described first controller and second controller respectively, receives described first power-off instruction, second source closes indication signal, carry out and calculating, it is thus achieved that power-off indication signal；
State latching circuit, is connected with door with door and second with described first, receives described electric power starting indication signal, power-off indication signal, it is thus achieved that the state level of described one-key start system power supply, and latches；
Drive circuit, is connected with described state latching circuit and is connected starting relay, the state level according to the one-key start system power supply that described latch exports, and controls the closedown of described starting relay.
2. one-key start system power supply control circuit as claimed in claim 1, it is characterised in that described current power state includes: rebooting status, ON state, OFF state and switching state, described state level includes high level and low level；Described starting relay includes: IGN1 relay, IGN2 relay, ACC relay, STARTER relay.
3. one-key start system power supply control circuit as claimed in claim 1, it is characterized in that, be further provided with between described second and door and state latching circuit one or, described second is connected described or door first input end with the outfan of door, described or door the second input connects a plant-wide emergency shutdown signal, and described or door outfan connects the input of described state latching circuit.
4. one-key start system power supply control circuit as claimed in claim 1, it is characterized in that, the outfan of described drive circuit is connected with described first controller and second controller by diagnosing cable, for the state level of described one-key start system power supply being sent to described first controller and second controller, and store.
5. one-key start system power supply control circuit as claimed in claim 1, it is characterised in that
First electric power starting indication signal of described first controller output is that an ACC opens indication signal, described first power-off indication signal is that an ACC closes indication signal, it is that the 2nd ACC opens indication signal that the second source of described second controller output opens indication signal, and it is that the 2nd ACC closes indication signal that described second source closes indication signal；Or
First electric power starting indication signal of described first controller output is that an IGN1 opens indication signal, described first power-off indication signal is that an IGN1 closes indication signal, it is that the 2nd IGN1 opens indication signal that the second source of described second controller output opens indication signal, and it is that the 2nd IGN1 closes indication signal that described second source closes indication signal；
First electric power starting indication signal of described first controller output is that an IGN2 opens indication signal, described first power-off indication signal is that an IGN2 closes indication signal, it is that the 2nd IGN2 opens indication signal that the second source of described second controller output opens indication signal, and it is that the 2nd IGN2 closes indication signal that described second source closes indication signal；
First electric power starting indication signal of described first controller output is that a STARTER opens indication signal, described first power-off indication signal is that a STARTER closes indication signal, it is that the 2nd STARTER opens indication signal that the second source of described second controller output opens indication signal, and it is that the 2nd STARTER closes indication signal that described second source closes indication signal.
6. one-key start system power supply control circuit as claimed in claim 1, it is characterised in that described startup button, drive circuit are respectively provided with master-slave redundancy structure, and described first controller and described second controller are connected by the communications cable.
7. one-key start system power supply control circuit as claimed in claim 1, it is characterised in that farther include power circuit, comprising:
First fuse, its first end connects battery feed, and the second end connects the first diode cathode, connects the first filter capacitor, and power to electronic load between described first diode cathode and ground；
Second fuse, its first end connects battery feed, second end connects the second diode cathode, the second filter capacitor is connected between described second diode cathode and ground, described second diode cathode connects a transformator, it is connected the 3rd filter capacitor between described transformator outfan and ground, and powers to the first controller and second controller；
3rd diode, its positive pole connects described first diode cathode, and its negative pole connects the negative pole of described second diode；
4th diode, its positive pole connects the positive pole of described second diode, and its negative pole connects the negative pole of described first diode；
Wherein, described first diode, the second diode conducting voltage less than the conducting voltage of described 3rd diode, the 4th diode, the second end of described first fuse connects electronic steering column.
8. an one-key start system power supply control method, realizes, it is characterised in that comprise the steps: in the circuit as described in any one of claim 1 to 7
In the first controller according to the signal of starting switch, one-key start system power supply current state level and from the signal of VSC, generate the first electric power starting instruction, the first power-off indication signal and export；
In second controller according to the signal of starting switch, one-key start system power supply current state level and from the signal of VSC, generate that second source opens instruction, second source is closed indication signal and also exported；
Described first electric power starting instruction, second source are opened indication signal and carried out and calculating, it is thus achieved that electric power starting indication signal；
Described first power-off instruction, second source are closed indication signal and carried out and calculating, it is thus achieved that power-off indication signal；
According to described electric power starting indication signal, power-off indication signal, it is thus achieved that the state level of described one-key start system power supply, and latch；
State level according to the one-key start system power supply that described latch obtains, controls the closedown of starting relay.
9. one-key start system power supply control method as claimed in claim 8, it is characterised in that according to described electric power starting indication signal, power-off indication signal, confirm the state of described one-key start system power supply, and farther include before latching step:
Described power-off indication signal and a plant-wide emergency shutdown signal are carried out or computing.
10. one-key start system power supply control method as claimed in claim 9, it is characterised in that farther include:
Described first controller and second controller, according to the signal from starting switch, the feedback signal from VSC, it is determined that current power state.
11. one-key start system power supply control method as claimed in claim 10, it is characterised in that farther include:
Described first controller and second controller, by determined current power state, compare with the state level of the one-key start system power supply carrying out driving circuit, according to predetermined synopsis, determine that whether described one-key start system power supply is normal, if it is judged that be abnormal, then point out the DTC of correspondence.
12. one-key start system power supply control method as claimed in claim 9, it is characterised in that farther include:
Described first controller is or/and described second controller after restart, carries out following steps:
Judge the status signal from electronic steering column ESCL, if the status signal of described electronic steering column ESCL is blocking, it is determined that current power supply status is OFF state；
If the status signal of described electronic steering column ESCL is non-for blocking, then judge that whether described IGN1 relay is before restarting already at state of activation, if result is yes, it is determined that current power supply status is ON state；Otherwise determine that current power supply is OFF state；
If the status signal of described electronic steering column ESCL and the feedback signal of institute's IGN1 relay can not be obtained, then according to the power supply status of storage in the RAM in described first controller and/or second controller, it is determined that current power supply status is the power supply status of storage in described RAM.
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| CN105799614B (en) | 2018-03-13 |
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