CN103967679A - Method for controlling starter through starter control system and starter control system thereof - Google Patents
Method for controlling starter through starter control system and starter control system thereof Download PDFInfo
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- CN103967679A CN103967679A CN201310030002.0A CN201310030002A CN103967679A CN 103967679 A CN103967679 A CN 103967679A CN 201310030002 A CN201310030002 A CN 201310030002A CN 103967679 A CN103967679 A CN 103967679A
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Abstract
The invention provides a starter control system which comprises a one-key starting control unit, an engine management unit and a starting relay which are connected with one another, wherein the one-key starting control unit is connected with a first input end of the starting relay and is used for controlling the first input end of the starting relay to be powered on or powered off; the engine management unit is connected with a second input end of the starting relay and is used for controlling the second input end of the starting relay to be powered on or powered off; after the first input end and the second input end of the starting relay are powered on, the starting relay is closed up, and the starter is started after the starting relay is closed up. According to the starter control system, the starting relay is controlled by two units, so that the rate of control faults is reduced, and the security property of an automobile is improved. The invention further discloses a method for controlling the starter through the starter control system.
Description
Technical field
The present invention relates to the control technique of starter motor, relate in particular to method and the starter control system thereof of starter control system control starter motor.
Background technique
Motor system is the heart of automobile, for the walking of automobile provides power, is being related to power character, Economy, the feature of environmental protection of automobile; Motor starts by starter motor, and Control is passed through in the startup of starter motor; The startup of orthodox car motor is that driver passes through key and directly controls, and driver has born and guaranteed to start safe responsibility, and for example driver can confirm that whether speed changer is at neutral gear, and whether clutch throws off, and whether has pedestrian etc. at vehicle front.
Along with the technology development of automotive field, current automobile has mostly configured a key and has started control unit, the process that one key starts control unit control starter motor is: operator carry out after a key startup, one key starts control unit and automatically detects and whether start safety, if detect startup safety, a key starts driving signal closes starting relay of driver element output of control unit, it is starter motor power supply that starting relay closure makes power supply, and the starter motor after power supply drives engine start.
One key startup control unit has been simplified the startup flow process of starter motor, make the startup of starter motor become intelligent simultaneously, but utilize a key to start control unit and control separately starter motor, may there is so following problem: (wherein the English full name of RAM is Random AccessMemory if a key starts control unit internal RAM, Chinese full name is random access memory) fault, or starter motor driver output level catastrophic failure etc., all likely cause starter motor to power on suddenly, because powering on of starter motor is now to power on by mistake, therefore need to disconnect starter motor; Can not automatically disconnect starting relay due to fault but a key starts control unit, and then cause safety problem.
Summary of the invention
Start the internal RAM fault in control unit for solving a key in prior art, or starter motor driver output level catastrophic failure etc., cause starting chance error to power on, therefore need to disconnect starter motor; But starting control unit, a key can not automatically disconnect starting relay due to fault, and then cause safety problem, the invention provides a kind of starter control system and can solve a key and start the problem that can not disconnect starter motor after control unit fault false tripping starter motor.
On the one hand, the starter control system in the embodiment of the present invention comprises that an interconnective key starts control unit, engine management unit and starting relay;
A described key starts control unit and is connected with the first input end of starting relay, be used for controlling starting relay first input end and power on and power-off, and after the signal of ato unit, send the first driving signal the first input end of starting relay is powered on receiving;
Described engine management unit is connected with the second input end of starting relay, be used for controlling starting relay the second input end and power on and power-off, and after the signal of ato unit, send two driving signal the second input end of starting relay is powered on receiving;
After the first input end of described starting relay and the second input end power on, make starting relay closure, described starting relay is connected with starter motor, and described starting relay closure starts described starter motor.
Beneficial effect: with respect to the scheme of controlling separately starting relay closed and disconnected in prior art by a key startup control unit; Starter control system of the present invention starts control unit and engine management unit co-controlling starting relay closed and disconnected by a key, even if a key starts one of them fault in control unit and engine management unit, cause starting relay one end to power on by mistake, also the other end power-off that can control starting relay disconnects starting relay, avoid opening motor because of the closed starting relay of mistake, cause car accident.
Further, in starter control system of the present invention, a described key starts control unit and comprises:
The first neutral signal receiving unit, for receiving the neutral signal of neutral gear sensor collection and sending to the first control unit;
The first control unit, the neutral signal forwarding for receiving braking pedal signal and the first neutral signal receiving unit, and in the time receiving neutral signal and braking pedal and step on signal, send the first control command;
The first driver element, for sending the first driving signal according to the first control command;
Described engine management unit comprises:
The second neutral signal receiving unit, for receiving the neutral signal of neutral gear sensor collection and sending to the second control unit;
The second control unit, the neutral signal forwarding for receiving braking pedal signal and the second neutral signal receiving unit, and in the time receiving neutral signal and braking pedal and step on signal, send the second control command;
The second driver element, for sending two driving signal according to the second control command.
Starter control system described in this programme has increased the first neutral signal receiving unit and the second neutral signal receiving unit, can receive the neutral signal that neutral gear sensor device gathers, and the first control unit and the second control unit are only in the time receiving the signal that vehicle neutral signal and braking pedal step on, just control starting relay closure and start starter motor, even if the closure of described starting relay is mistake closed (it is accidents caused that closed starting relay causes vehicle operating meeting) by mistake, also because vehicle is stepped in neutral position state and braking pedal, vehicle can not be advanced, further avoid occurring vehicle safety accident.
Further, in starter control system of the present invention, a described key starts control unit, engine management unit is connected with brake pedal switch respectively with by rigid line, and a described key starts control unit and is connected by vehicle body control unit with engine management unit;
Described braking pedal is stepped on signal from described rigid line or from described vehicle body control unit.
Further, in starter control system of the present invention, described the first neutral signal receiving unit comprises the first resistance element and the second resistance element, described first resistance element one end ground connection, and the other end is for being connected with neutral gear sensor;
Described second resistance element one termination the first predeterminated voltage, the other end is for being connected with neutral gear sensor.
Further, in starter control system of the present invention, described the first driver element comprises the first metal-oxide-semiconductor, and the grid of described the first metal-oxide-semiconductor is connected with the first control unit, and drain electrode connects the second predeterminated voltage, and source electrode connects the first input end of starting relay;
Described the second driver element comprises the second metal-oxide-semiconductor, and the grid of described the second metal-oxide-semiconductor is connected with the second control unit, and drain electrode connects the second input end of starting relay, source ground.
Further, in starter control system of the present invention, a described key starts control unit and also comprises:
Fisrt fault detection unit, for detection of whether fault of the first driver element, and in the time detecting the first driver element fault-free, the first driver element fault-free information that sends is to the first control unit and the second control unit.
Described in this programme, starter control system can detect whether fault of the first driver element, and the fault message detecting is sent to the second control unit, has realized information sharing, to better control starting relay.
Further, in starter control system of the present invention, described engine management unit also comprises:
The second fault detection unit, for detection of whether fault of the second driver element, and in the time detecting the second driver element fault-free, the second driver element fault-free information that sends is to the first control unit and the second control unit;
Described the first control unit also, in the time receiving the second driver element fault-free information, braking pedal and step on neutral signal that signal, the first neutral signal receiving unit forward and the first driver element fault-free information, sends the first control command;
Described the second control unit also, in the time receiving the first driver element fault-free information, braking pedal and step on neutral signal that signal, the second neutral signal receiving unit forward and the second driver element fault-free information, sends the second control command.
Described in this programme, starter control system can detect whether fault of the second driver element, and the fault message detecting is sent to the first control unit, has realized information sharing, to better control starting relay.
Further, starter control system of the present invention also comprises the engine anti-theft authentication unit of being located in engine management unit, and is located at the timing unit in a key startup control unit and/or engine management unit;
Described engine anti-theft authentication unit, in the time that starting relay is closed or after starting, is carried out engine anti-theft certification;
Described timing unit carries out timing for the time to engine anti-theft certification and the operating time of starter motor;
If the time of the antitheft certification of motor arrives the first Preset Time, engine anti-theft has authenticated, and controls the first driver element and/or the second driver element and disconnects starting relay;
If the operating time of starter motor arrives the second Preset Time, control the first driver element and/or the second driver element and disconnect starting relay to disconnect starter motor.
Described in this programme, starter control system can judge whether engine anti-theft certification is overtime, and in overtime situation, disconnects starting relay, avoids breaking down because engine problem causes vehicle.
Further, in starter control system of the present invention, a described key starts to be provided with in control unit and in the 3rd fault detection unit and/or engine management unit, is provided with the 4th fault detection unit;
Described the 3rd fault detection unit and/or the 4th fault detection unit, for after disconnecting at starting relay, carry out faut detection to starter motor, and in the time detecting starter motor and have fault, send and preserve starter motor fault message.
Starter control system described in this programme carries out faut detection to starter motor after starting relay disconnects, and avoids causing vehicle safety accident because of starter motor fault.
For a key that solves prior art starts internal RAM (storage) fault in control unit, or starter motor driver output level catastrophic failure etc., all likely cause starting chance error to power on, therefore need to disconnect starter motor; But starting control unit, a key can not automatically disconnect starting relay due to fault, and then cause safety problem, the present invention also provides a kind of method of starter control system control starter motor, and described starter control system is starter control system described above;
The controlling method of described starter motor comprises the following steps:
A, obtain the signal of ato unit;
B, a key start control unit and send the first driving signal according to the signal of ato unit starting relay first input end is powered on, and engine management unit sends two driving signal according to the signal of ato unit starting relay the second input end is powered on closed starting relay.
Beneficial effect: with respect to the scheme of controlling separately starting relay closed and disconnected in prior art by a key startup control unit; Starter control system control starter motor method of the present invention is by sending the first driving signal and two driving signal co-controlling starting relay closure, even if one of them in two driving signal and two driving signal is for drive signal by mistake, cause starting relay one end to power on by mistake, also can cut off another and drive signal to make the other end power-off of starting relay disconnect starting relay, avoid opening motor because of false tripping relay and cause car accident.
Further, in the method for starter control system control starter motor of the present invention, after A step, before B step, further comprising the steps of:
Whether detect vehicle in neutral position state, detect braking pedal simultaneously and whether step on;
If detection draws vehicle and steps in neutral position state and braking pedal, carries out B step.
This programme is before execution B step, first confirm that vehicle steps in neutral position state and braking pedal, even if the first driving signal and two driving signal are all that error signal causes closed starting relay like this, also because vehicle is stepped in neutral position state and braking pedal, can not cause that vehicle advances, further avoid occurring vehicle safety accident.
Further, the method for starter control system control starter motor of the present invention is further comprising the steps of:
Whether detect vehicle in neutral position state, whether detect braking pedal steps on, detect whether fault testing result is sent to engine management unit of the first driver element, and detect whether fault send to a key to start control unit testing result of the second driver element;
If detect and show that vehicle is in neutral position state, braking pedal is stepped on, and engine management unit receives the first driver element fault-free information and key startup control unit receives the second driver element fault-free information, carries out B step.
This programme is carrying out before B step, first confirms that vehicle steps on and further investigate the fault of the first driver element and the second driver element in neutral position state, braking pedal, reduces the vehicle probability that accidents happened.
Further, in the method for starter control system control starter motor of the present invention, after starting relay closure, periodically detect the first driver element and whether have fault and testing result is sent to engine management unit;
If engine management unit does not periodically receive the first driver element fault-free information, cut off two driving signal to disconnect starting relay;
After starting relay closure, periodically detect the second driver element and whether have fault and send to a key to start control unit testing result;
Periodically do not receive the second driver element fault-free information if a key starts control unit, cut off the first driving signal to disconnect starting relay.
This programme, after starting relay closure, is further investigated whether fault of the first driver element and the second driver element, and in the time having fault, disconnects starting relay, avoids bringing because of the fault of the first driver element and the second driver element the safety problem of vehicle.
Further, in the method for starter control system control starter motor of the present invention, in the time that starting relay is closed or after closure, carry out antitheft certification the timing of motor, and the operating time of starter motor is carried out to timing;
If the time of the antitheft certification of motor arrives the first Preset Time, engine anti-theft has authenticated, and cuts off the first driving signal and/or two driving signal to disconnect starting relay;
If the operating time of starter motor arrives the second Preset Time, the first driver element and/or the second driver element disconnect starting relay to disconnect starter motor.
This programme, in the time that starting relay is closed or after closure, carries out antitheft certification to motor, and in the overtime situation of certification, disconnects starting relay, avoids causing security incident because of engine problem.
Further, in the method for starter control system control starter motor of the present invention, if engine anti-theft authentication success sends the index signal of engine anti-theft authentication success and detects engine speed;
If engine speed is greater than predefined value, cuts off the first driving signal and/or two driving signal and disconnect starting relay.
This programme is after engine anti-theft authentication success, detect engine speed and whether meet predefined value, if meet, illustrate that motor normally starts, at this moment disconnect in time starting relay and avoid starter motor to work long hours causing Starter or overrunning clutch to damage, vehicle fire accident even occurs.
Further, in the method for starter control system control starter motor of the present invention, if engine anti-theft authentification failure sends engine lock stop signal;
Drive signal and/or two driving signal to disconnect starting relay according to engine locking signal cut first.
This programme, after authentication engine failure, disconnects starting relay, avoids engine problem to cause security incident.
Further, the method for starter control system control starter motor of the present invention is further comprising the steps of:
Disconnecting after starting relay, starter motor is carried out to faut detection;
If starter motor exists fault, send starter motor fault message and preserve.
This programme can be monitored starter motor constantly, in the time of starter motor fault, can obtain fault message, to handle it in time.
Brief description of the drawings
Fig. 1 is starter control system embodiment 1 block diagram provided by the invention.
Fig. 2 is starter control system embodiment 2 block diagrams provided by the invention.
Fig. 3 is starter control system embodiment 3 block diagrams provided by the invention.
Fig. 4 is starter control system embodiment 4 block diagrams provided by the invention.
Fig. 5 is embodiment of the method 5 flow charts of starter control system control starter motor provided by the invention.
Fig. 6 is embodiment of the method 6 flow charts of starter control system control starter motor provided by the invention.
Fig. 7 is embodiment of the method 7 flow charts of starter control system control starter motor provided by the invention.
Fig. 8 is embodiment of the method 8 flow charts of starter control system control starter motor provided by the invention.
Fig. 9 is embodiment of the method 9 flow charts of starter control system control starter motor provided by the invention.
Figure 10 is embodiment of the method 10 flow charts of starter control system control starter motor provided by the invention.
Wherein, 1, a key starts control unit; 2, engine management unit; 3, starting relay; 4, vehicle body control unit; 5, starter motor; 6, neutral gear sensor; 101, the first neutral signal receiving unit; 102, the first driver element; 103, Fisrt fault detection unit; 104, the 3rd fault detection unit; 201, the second neutral signal receiving unit; 202, the second driver element; 203, the second fault detection unit; 204, the 4th fault detection unit.
Embodiment
In order to make technical problem solved by the invention, technological scheme and beneficial effect clearer, below in conjunction with drawings and Examples, the present invention is further elaborated.Should be appreciated that specific embodiment described herein, only in order to explain the present invention, is not intended to limit the present invention.
In description of the invention, it should be noted that, unless otherwise clearly defined and limited, term " connection ", should be interpreted broadly, can be direct connection, also can indirectly connect by intermediary, can be the connection of two element internals.Term " the first driver element " and " the second driver element " are to drive the parts of signal by starting relay closure receiving can send after customizing messages; Term " powers on " and has referred to that electric current flows through, and " power-off " is contrary with the meaning that powers on, and can concrete condition understand above-mentioned term concrete meaning in the present invention.
Starter control system of the present invention comprises that an interconnective key starts control unit, engine management unit and starting relay;
A described key starts control unit and is connected with the first input end of starting relay, be used for controlling starting relay first input end and power on and power-off, and after the signal of ato unit, send the first driving signal the first input end of starting relay is powered on receiving;
Described engine management unit is connected with the second input end of starting relay, be used for controlling starting relay the second input end and power on and power-off, and after the signal of ato unit, send two driving signal the second input end of starting relay is powered on receiving;
After the first input end of described starting relay and the second input end power on, make starting relay closure, described starting relay is connected with starter motor, and described starting relay closure starts described starter motor.
In the method for starter control system control starter motor of the present invention and starter control system thereof, the closure of starting relay is to control together by two different driving signals, lack one of them and drive signal, starting relay just can not be closed, if send a driver element fault that drives signal, cause starting relay one end to power on, can make by sending another driver element that drives signal so the other end power-off of starting relay, avoid false tripping starter motor.
Vehicle body control unit described in the present invention can be shared with the signal transmitting in vehicle internal networks one key and start control unit and engine management unit, such as braking pedal state signal etc.; Described vehicle body control unit can also transmit as gateway a key startup control unit and engine management unit both sides' interactive information, the fault message of such as driver element etc. in addition; The first neutral signal receiving unit in embodiment and the second neutral signal receiving unit are only one of them specific example below, can utilize prior art to replace according to actual conditions; In embodiment, the first driver element and the second driver element are only one of them specific example below, can utilize prior art to replace according to actual conditions.
By the following examples the present invention is further detailed.
Embodiment 1
As shown in Figure 1, starter control system described in the present embodiment is used on vehicle, a wherein said key starts control unit 1 and is connected by vehicle body control unit with engine management unit 2, be specially one key start control unit 1 by BCAN(wherein the English full name of BCAN be Body Controller AreaNetwork, Chinese full name is car body controller Local Area Network) be connected with vehicle body control unit 4, engine management unit 2 by PCAN(wherein the English full name of PCAN be Power Controller Area Network, Chinese full name is power controller Local Area Network) be connected with vehicle body control unit 4, wherein said vehicle body control unit 4 can be crossed and complete the control to the electrical appliance module on vehicle according to driver's operational order, for example radio receiver, the GPS(wherein English full name of GPS is Global Positioning System, Chinese full name is global positioning system) navigation etc., simultaneously integrated communication module in vehicle body control unit, one key is started between control unit and engine management unit and can complete information sharing.
A key described in this enforcement starts control unit 1 and can obtain ato unit signal and be transferred to engine management unit 2 by vehicle body control unit, as another kind of mode of execution, the ato unit signal that one key startup control unit 1 obtains also can be transferred to engine management unit by rigid line, and a described key starts control unit and is connected with starting relay first input end (upper end of diagram starting relay) by signaling line; In the time of needs ato unit, driver sends ato unit signal by triggering engine start button (or by other vehicle launch modes) Xiang Yijian startup control unit 1, one key starts control unit and drives signal to starting relay 3 upper ends according to this signal output first, and wherein the first driving signal is current signal.
Engine management unit 2 described in the present embodiment is connected with second input end (lower end of diagram starting relay) of starting relay by signaling line, when receiving after the signal of the ato unit that vehicle body control unit 4 forwards, the lower end of two driving signal to starting relay exported according to this signal in engine management unit 2, and wherein two driving signal is also current signal; In the time that the upper and lower end of starting relay has current signal, starting relay utilizes electromagnetic effect will make the switch closure of starting relay, after the switch closure of starting relay, illustrated the second predeterminated voltage V2 band mechanical starter 5 starts, wherein the size of the second predeterminated voltage V2 is to provide according to the power of starter motor, guarantee starter motor starts, and after starter motor starts, drives engine running, completes the startup of motor; In the time that needs are closed motivation, one key starts control unit and engine management unit needs only one that cuts off in the first driving signal and two driving signal, even if a key starts one of them fault in control unit and engine management unit, also can control starter motor by another and disconnect.
Embodiment 2
As shown in Figure 2, a key in this enforcement starts control unit 1 and specifically comprises the first neutral signal receiving unit 101, the first driver element 102 and the first control unit (not shown), described the first neutral signal receiving unit is connected with vehicle neutral gear sensor 6, for receiving the neutral signal of neutral gear sensor collection and being transmitted to the first control unit; The first neutral signal receiving unit described in the present embodiment comprises the first resistance R 1 and the second resistance R 2, described first resistance one end ground connection, and the other end is connected with neutral gear sensor; Described second resistance one termination the first predeterminated voltage V1, the first predeterminated voltage is set according to actual needs, and the other end is connected with neutral gear sensor 4; When the first resistance R 1 termination is received a high level signal, when the second resistance R termination is received a low level signal, represent that transmission for vehicles is in neutral position state; Described the first control unit is connected with the first neutral signal receiving unit 101, the first driver element 102 respectively, the neutral signal forwarding for receiving braking pedal signal and the first neutral signal receiving unit, and in the time receiving neutral signal and braking pedal and step on signal, send the first control command.Wherein the first driver element is controlled starting relay first input end (diagram upper end) and is powered on for sending the first driving signal according to the first control command; Described the first driver element comprises that (wherein the English full name of metal-oxide-semiconductor is Metal-Oxide-SemiconductorTransistor to the first metal-oxide-semiconductor, Chinese is metal oxide semiconductor field effect tube) M1, the grid of described metal-oxide-semiconductor is connected with the first control unit, drain electrode connects the second predeterminated voltage V2, and source electrode connects the first input end of starting relay; Wherein the first control command is for controlling the opening and closing of metal-oxide-semiconductor M1, and the second predeterminated voltage V2 sets according to actual needs.Need to export the first driving signal time, the first control unit sends the first control command control metal-oxide-semiconductor M1 conducting, and the current signal of metal-oxide-semiconductor M1 flows through the upper end of starting relay, completes starting relay upper end and powers on.Need to be to the power-off of starting relay upper end time, the first control unit cuts off the first control command, and then metal-oxide-semiconductor M1 closes, and completes the power-off of starting relay upper end; Other the first driver element also can adopt other existing switch to realize, and powers on and power-off as long as can control the upper end of starting relay.
Described engine management unit specifically comprises the second neutral signal receiving unit 201 and the second driver element 202 and the second control unit (not shown), described the second neutral signal receiving unit is connected with vehicle neutral gear sensor, for receiving the neutral signal of neutral gear sensor collection and being transmitted to the second control unit; The second neutral signal receiving unit described in the present embodiment is identical with the first neutral signal receiving unit structure in a key startup control unit, no longer describes in detail here.Described the second control unit is connected with the second neutral signal receiving unit 201, the second driver element 202 respectively, the neutral signal forwarding for receiving braking pedal signal and the second neutral signal receiving unit, and in the time receiving neutral signal and braking pedal and step on signal, send the second control command.Wherein the second driver element is controlled powering on of starting relay the second input end (diagram lower end) for sending two driving signal according to the second control command; Described the second driver element comprises the second metal-oxide-semiconductor M2, and the grid of described metal-oxide-semiconductor is connected with the second control unit, and drain electrode connects the second input end of starting relay, source ground; Wherein the second control command is for controlling the opening and closing of metal-oxide-semiconductor M2.Need to export two driving signal time, the second control unit sends the second control command control metal-oxide-semiconductor M2 conducting, and the current signal of metal-oxide-semiconductor M2 flows through the lower end of starting relay, completes starting relay lower end and powers on.Need to be to the power-off of starting relay lower end time, the second control unit cuts off the second control command, and then metal-oxide-semiconductor M2 closes, and completes the power-off of starting relay lower end; Same the second driver element also can adopt other existing switch, powers on and power-off as long as can control the lower end of starting relay.
In the present embodiment, the first control unit, only in the time receiving braking pedal and step on the neutral signal that signal and the first neutral receiving element forward, just sends the first control command; Same the second control unit is only in the time receiving braking pedal and step on the neutral signal that signal and the second neutral receiving element forward, just send the second control command, at this moment the operating mode that vehicle is stepped in neutral position state, braking pedal, even if controlling starter motor by mistake, the first control unit and the second control unit start, vehicle also can not move, and has ensured traffic safety; The signal that described braking pedal is stepped on can be transferred to the first control unit and the second control unit by gateway (vehicle body control unit), also can be transferred to the first control unit and the second control unit by rigid line.
Embodiment 3
As shown in Figure 3, the present embodiment and embodiment's 2 difference is specially: a key starts in control unit and also increased Fisrt fault detection unit 103, has also increased by the second fault detection unit 203 in engine management unit, wherein Fisrt fault detection unit is for detection of whether fault in the time detecting the first driver element fault-free of the first driver element, the first driver element fault-free information that sends is to the first control unit and the second control unit, the fault of the first driver element specifically refers to open circuit and the short circuit of metal-oxide-semiconductor M1, the second fault detection unit is for detection of whether fault in the time detecting the second driver element fault-free of the second driver element, the second driver element fault-free information that sends is to the first control unit and the second control unit, the fault of the second driver element specifically refers to open circuit and the short circuit of metal-oxide-semiconductor M2.
In the present embodiment, the first control unit, also in the time receiving the second driver element fault-free information, braking pedal and step on neutral signal that signal, the first neutral signal receiving unit forward and the first driver element fault-free information, sends the first control command; Same the second driver element only, in the time receiving the first driver element fault-free information, braking pedal and step on neutral signal that signal, the second neutral signal receiving unit forward and the second driver element fault-free information, sends the second control command.The first driver element and the second driver element short circuit may cause starting relay conducting, therefore by the faut detection to the first driver element and the second driver element, the fault message that the first control unit and the second control unit are grasped driver element in time can disconnect starting relay in the time of the first driver element and the second driver element fault, avoid the closed starting relay of mistake, also avoid false tripping starter motor, and then ensure vehicle safety.
Embodiment 4
As shown in Figure 4, the present embodiment is to be specially in embodiment 3 difference: a described key starts control unit and also comprises the 3rd fault detection unit 104, described engine management unit also comprises the 4th fault detection unit 204, conventionally starter motor drives after engine start, starter motor just needs to cut off, after starter motor cuts off, the 3rd fault detection unit and the 4th detection unit detect whether fault of starter motor, and starter motor fault message is kept in the nonvolatile storage of self, send in vehicle internal networks simultaneously and check for driver, to process in time; Wherein starter motor fault index is leaked electricity exactly.
The present embodiment engine management unit comprises engine anti-theft authentication unit and timing unit, and described engine anti-theft authentication unit, in the time that starting relay is closed or after starting, is carried out engine anti-theft certification; Described timing unit carries out timing for starter motor the is united time of antitheft certification and the operating time of starter motor; If engine anti-theft authenticated time arrives the first Preset Time, engine anti-theft has authenticated, and the second driver element disconnects starting relay; If the operating time of starter motor arrives the second Preset Time, the first driver element and/or the second driver element disconnect starting relay to disconnect starter motor.An other key starts in control unit also can arrange timing unit, in the time that engine management unit carries out engine anti-theft certification, by vehicle body control unit, the information of engine anti-theft certification is issued to a key and start control unit, the time that timing unit in one key startup control unit authenticates engine anti-theft and the time of starter motor work are carried out timing, if engine anti-theft authenticated time arrives the first Preset Time, engine anti-theft has authenticated, and the first driver element also can disconnect starting relay; Wherein the first Preset Time is set according to actual conditions, for example 5 seconds (s), 10 seconds (s) etc., the second Preset Time is the maximum operating time of starter motor, namely starting relay is opened to the time of disconnection, the second Preset Time is generally 20 seconds (s), and the second Preset Time is greater than the first Preset Time.
Engine anti-theft certification is overtime is an index of engine failure, and therefore described in the present embodiment, starter control system authenticates overtime in the situation that at engine anti-theft, cuts off starting relay and disconnects motor, the accident of avoiding meeting accident after vehicle launch.
A kind of method of starter control system control starter motor has also been proposed in the embodiment of the present invention, described starter control system can be embodiment 1 to the starter control system of any one description in embodiment 4, and the controlling method of described starter motor comprises the following steps:
A, obtain the signal of ato unit;
B, a key start control unit and send the first driving signal according to the signal of ato unit starting relay first input end is powered on, and engine management unit sends two driving signal according to the signal of ato unit starting relay the second input end is powered on closed starting relay.
Set forth the method for starter control system control starter motor of the present invention below by specific embodiment.
Embodiment 5
As shown in Figure 5, the controlling method of described starter motor comprises the following steps:
1011, obtain the signal of ato unit;
1012, a key starts control unit and sends the first driving signal according to the signal of ato unit starting relay first input end is powered on;
1013, engine management unit sends two driving signal according to the signal of ato unit starting relay the second input end is powered on.
Wherein, the signal of the ato unit described in step 1011 is that driver provides, starts control unit acquisition by a key, and the signal of ato unit is sent to engine management unit by key startup control unit; The first driving signal and two driving signal are current signal, can send simultaneously, also can timesharing send; After the first input end of starting relay and the second input end power on, the switch closure of starting relay, starter motor energising.
The present embodiment starts control unit and engine management unit co-controlling starting relay closure by a key, and being equivalent to provides dual fail-safe to the closure of starting relay, has improved the Security that starter motor starts; Step 1012 described in the present embodiment and 1013 can be carried out simultaneously in addition, also can timesharing carry out.
Embodiment 6
As shown in Figure 6, described in the present embodiment, the controlling method of starter motor comprises the following steps:
2011, obtain the signal of ato unit;
2012, whether detect vehicle in neutral position state, detect braking pedal simultaneously and whether step on;
If detection draws vehicle and steps in neutral position state and braking pedal, perform step 2013, a key starts control unit and sends the first driving signal according to the signal of ato unit starting relay first input end is powered on, and execution step 2014, engine management unit sends two driving signal according to the signal of ato unit that starting relay the second input end is powered on.
Obtain after ato unit signal, detect the state of the residing state of transmission for vehicles and braking pedal, only at vehicle in the time that neutral position state and braking pedal are stepped on, just control starting relay closure, at this moment the operating mode of stepping in neutral position state and braking pedal due to vehicle, even if starting relay is mistake, closure can not cause vehicle launch yet, avoids mistake closure to cause potential safety hazard.
Embodiment 7
As shown in Figure 7, obtaining after the signal of ato unit, also carry out step 20111, detect whether fault testing result is sent to engine management unit of the first driver element, and carry out step 20112, detect whether fault send to a key to start control unit testing result of the second driver element;
If engine management unit receives the first driver element fault-free information, and a key start control unit receive the second driver element fault-free information, perform step 2013 and 2014.
Do not receive the testing result information of the second driver element or receive fault message if a key starts control unit, not performing step 2013; If engine management unit does not receive the testing result information of the first driver element or receives fault message, do not perform step 2014 yet.
Wherein step 20111 and step 20112 can be carried out simultaneously, also can timesharing carry out, and are preferably simultaneously and carry out, and reach like this synchronization control to starting relay.
Embodiment 8
As shown in Figure 8, power on and cause after starting relay closure at the first input end of starting relay and the second input end, also carry out following steps:
Whether 301, periodically detect the first driver element there is fault and testing result is sent to engine management unit;
Whether 302, periodically detect the second driver element there is fault and sends to a key to start control unit testing result;
If 303 engine management unit periodically do not receive the first driver element fault-free information, cut off two driving signal to disconnect starting relay, periodically do not receive the second driver element fault-free information if a key starts control unit, cut off the first driving signal to disconnect starting relay.
Wherein the faut detection cycle of the first driver element and the faut detection cycle of the second driver element determine according to actual conditions, do not limit here, and can be for example to detect once every 10 seconds (s).Engine management unit does not periodically receive the first driver element fault-free information and comprises the first driver element fault and the first driver element fault-free but in communication, occurred problem, causes not receiving; A same key starts control unit and does not periodically receive the second driver element fault-free information and also comprise the second driver element fault and the second driver element fault-free but in communication, occurred problem, causes not receiving.The faut detection result of the first driver element is transmitted to engine management unit by vehicle body control unit, and the faut detection result of same the second driver element is transmitted to a key by vehicle body control unit and starts control unit; First drives a cut-out in signal and two driving signal, and starting relay disconnects, and in the time that needs cut off starting relay, can be to cut off the first driving signal and two driving signal simultaneously, can be also to cut off separately.
After starting relay closure, periodically the first driver element and the second driver element are carried out to fault eliminating, be conducive to eliminate vehicle safety hidden danger.
Embodiment 9
As shown in Figure 9, in the time that starting relay is closed or after closure, further comprising the steps of: 401, to carry out antitheft certification the timing of motor, and the operating time of starter motor is carried out to timing;
If 402 engine anti-theft authenticated times arrive the first Preset Time, engine anti-theft has authenticated, and cuts off the first driving signal and/or two driving signal to disconnect starting relay;
If the operating time of 405 starter motors arrives the second Preset Time, the first driver element and/or the second driver element disconnect starting relay to disconnect starter motor.
The antitheft certification of motor is to complete by the engine anti-theft authentication unit in engine management unit, and the first Preset Time is set according to the conventional authenticated time of motor, and the first Preset Time of different motors is different, does not limit here; The second Preset Time is the maximum operating time of starter motor, is also the time that engine start relay is opened to disconnection, and the second Preset Time is generally 20 seconds (s), and the second Preset Time is greater than the first Preset Time.
The time of engine anti-theft certification is overtime, illustrates that engine anti-theft certification has problem, may be authentification failure or other problem, at this moment cuts off starting relay and avoids occurring safety problem.
Further, if engine anti-theft authentication success is further comprising the steps of:
403, send the index signal of engine anti-theft authentication success and detect engine speed;
If 4031 engine speed are greater than predefined value, cut off first and drive signal and/or two driving signal to disconnect starting relay.
Wherein, the index signal of sending engine anti-theft authentication success can be carried out motor oil spout igniting for prompting, and the predefined value of the present embodiment is 500 to turn, and predefined value can be set according to actual needs certainly, does not limit here; When being greater than 500, engine speed turns, illustrate that motor successfully starts, at this moment cut off starting relay and avoid starter motor to work long hours, starter motor works long hours has increased energy consumption, may cause starter motor or overrunning clutch to burn out, vehicle fire accident even occurs simultaneously.
Further, if engine anti-theft authentification failure is further comprising the steps of:
404, send engine lock stop signal;
4041, drive signal and/or two driving signal to disconnect starting relay according to engine locking signal cut first.
Wherein, engine lock stop signal sends by engine management unit, and export to a key startup control unit through vehicle network bus, one key startup control unit receives engine lock stop signal can cut off the first driving signal disconnection starting relay, increases the selectivity that disconnects starting relay.
Embodiment 10
As shown in figure 10, be greater than predefined value in engine speed, after normal working of engine, disconnecting starting relay quits work starter motor, in order to learn the state of the starter motor after starting relay disconnects, therefore disconnect after starting relay, further comprising the steps of:
501, starter motor is carried out to faut detection;
If 502 starter motors exist fault, send starter motor fault message and preserve.
The starter motor fault of described detection refers to detect on starter motor whether have electrical signal, if after starting relay disconnection, also has electrical signal on starter motor, starter motor existing problems are described, by starter motor fault message persistence and be issued in vehicle gateway, check for driver, so that maintenance in time.
Below describe by reference to the accompanying drawings the preferred embodiments of the present invention in detail; but; the present invention is not limited to the detail in above-described embodiment; within the scope of technical conceive of the present invention; can carry out multiple simple variant to technological scheme of the present invention, these simple variant all belong to protection scope of the present invention.
It should be noted that in addition, each concrete technical characteristics described in above-mentioned specific embodiment, in reconcilable situation, can combine by any suitable mode, for fear of unnecessary repetition, the present invention is to the explanation no longer separately of various possible compound modes.In addition, also can carry out combination in any between various embodiment of the present invention, as long as it is without prejudice to thought of the present invention, it should be considered as content disclosed in this invention equally.
Claims (17)
1. a starter control system, is characterized in that, comprises that an interconnective key starts control unit, engine management unit and starting relay;
A described key starts control unit and is connected with the first input end of starting relay, be used for controlling starting relay first input end and power on and power-off, and after the signal of ato unit, send the first driving signal the first input end of starting relay is powered on receiving;
Described engine management unit is connected with the second input end of starting relay, be used for controlling starting relay the second input end and power on and power-off, and after the signal of ato unit, send two driving signal the second input end of starting relay is powered on receiving;
After the first input end of described starting relay and the second input end power on, make starting relay closure, described starting relay is connected with starter motor, and described starting relay closure starts described starter motor.
2. starter control system according to claim 1, is characterized in that, a described key starts control unit and comprises:
The first neutral signal receiving unit, for receiving the neutral signal of neutral gear sensor collection and sending to the first control unit;
The first control unit, the neutral signal forwarding for receiving braking pedal signal and the first neutral signal receiving unit, and in the time receiving neutral signal and braking pedal and step on signal, send the first control command;
The first driver element, for sending the first driving signal according to the first control command;
Described engine management unit comprises:
The second neutral signal receiving unit, for receiving the neutral signal of neutral gear sensor collection and sending to the second control unit;
The second control unit, the neutral signal forwarding for receiving braking pedal signal and the second neutral signal receiving unit, and in the time receiving neutral signal and braking pedal and step on signal, send the second control command;
The second driver element, for sending two driving signal according to the second control command.
3. starter control system according to claim 2, it is characterized in that, a described key starts control unit, engine management unit is connected with brake pedal switch respectively with by rigid line, and a described key starts control unit and is connected by vehicle body control unit with engine management unit;
Described braking pedal is stepped on signal from described rigid line or from described vehicle body control unit.
4. starter control system according to claim 2, is characterized in that,
Described the first neutral signal receiving unit comprises the first resistance element and the second resistance element, described first resistance element one end ground connection, and the other end is for being connected with neutral gear sensor;
Described second resistance element one termination the first predeterminated voltage, the other end is for being connected with neutral gear sensor.
5. starter control system according to claim 2, it is characterized in that, described the first driver element comprises the first metal-oxide-semiconductor, and the grid of described the first metal-oxide-semiconductor is connected with the first control unit, drain electrode connects the second predeterminated voltage, and source electrode connects the first input end of starting relay;
Described the second driver element comprises the second metal-oxide-semiconductor, and the grid of described the second metal-oxide-semiconductor is connected with the second control unit, and drain electrode connects the second input end of starting relay, source ground.
6. starter control system according to claim 2, is characterized in that, a described key starts control unit and also comprises:
Fisrt fault detection unit, for detection of whether fault of the first driver element, and in the time detecting the first driver element fault-free, the first driver element fault-free information that sends is to the first control unit and the second control unit.
7. starter control system according to claim 6, is characterized in that, described engine management unit also comprises:
The second fault detection unit, for detection of whether fault of the second driver element, and in the time detecting the second driver element fault-free, the second driver element fault-free information that sends is to the first control unit and the second control unit;
Described the first control unit also, in the time receiving the second driver element fault-free information, braking pedal and step on neutral signal that signal, the first neutral signal receiving unit forward and the first driver element fault-free information, sends the first control command;
Described the second control unit also, in the time receiving the first driver element fault-free information, braking pedal and step on neutral signal that signal, the second neutral signal receiving unit forward and the second driver element fault-free information, sends the second control command.
8. starter control system according to claim 1, is characterized in that, also comprises the engine anti-theft authentication unit of being located in engine management unit, and is located at the timing unit in a key startup control unit and/or engine management unit;
Described engine anti-theft authentication unit, in the time that starting relay is closed or after starting, is carried out engine anti-theft certification;
Described timing unit carries out timing for the time to engine anti-theft certification and the operating time of starter motor;
If engine anti-theft authenticated time arrives the first Preset Time, engine anti-theft has authenticated, and controls the first driver element and/or the second driver element and disconnects starting relay;
If the operating time of starter motor arrives the second Preset Time, control the first driver element and/or the second driver element and disconnect starting relay to disconnect starter motor.
9. starter control system according to claim 1, is characterized in that, a described key starts to be provided with in control unit and in the 3rd fault detection unit and/or engine management unit, is provided with the 4th fault detection unit;
Described the 3rd fault detection unit and/or the 4th fault detection unit, for after disconnecting at starting relay, carry out faut detection to starter motor, and in the time detecting starter motor and have fault, send and preserve starter motor fault message.
10. a method for starter control system control starter motor, is characterized in that, described starter control system is the starter control system described in claim 1-9;
The controlling method of described starter motor comprises the following steps:
A, obtain the signal of ato unit;
B, a key start control unit and send the first driving signal according to the signal of ato unit starting relay first input end is powered on, and engine management unit sends two driving signal according to the signal of ato unit starting relay the second input end is powered on closed starting relay.
The method of 11. starter control system control starter motors according to claim 10, is characterized in that, after A step, before B step, further comprising the steps of:
Whether detect vehicle in neutral position state, detect braking pedal simultaneously and whether step on;
If detection draws vehicle and steps in neutral position state and braking pedal, carries out B step.
The method of 12. starter control system control starter motors according to claim 10, is characterized in that, further comprising the steps of:
Whether detect vehicle in neutral position state, whether detect braking pedal steps on, detect whether fault testing result is sent to engine management unit of the first driver element, and detect whether fault send to a key to start control unit testing result of the second driver element;
If detect and show that vehicle is in neutral position state, braking pedal is stepped on, and engine management unit receives the first driver element fault-free information and key startup control unit receives the second driver element fault-free information, carries out B step.
The method of 13. starter control system control starter motors according to claim 10, is characterized in that, after starting relay closure, periodically detects the first driver element and whether has fault and testing result is sent to engine management unit;
If engine management unit does not periodically receive the first driver element fault-free information, cut off two driving signal to disconnect starting relay;
After starting relay closure, periodically detect the second driver element and whether have fault and send to a key to start control unit testing result;
Periodically do not receive the second driver element fault-free information if a key starts control unit, cut off the first driving signal to disconnect starting relay.
The method of 14. starter control system control starter motors according to claim 10, is characterized in that, in the time that starting relay is closed or after closure, carries out antitheft certification the timing of motor, and the operating time of starter motor is carried out to timing;
If the time of the antitheft certification of motor arrives the first Preset Time, engine anti-theft has authenticated, and cuts off the first driving signal and/or two driving signal to disconnect starting relay;
If the operating time of starter motor arrives the second Preset Time, the first driver element and/or the second driver element disconnect starting relay to disconnect starter motor.
The method of 15. starter control system control starter motors according to claim 14, is characterized in that, if engine anti-theft authentication success sends the index signal of engine anti-theft authentication success and detects engine speed;
If engine speed is greater than predefined value, cuts off the first driving signal and/or two driving signal and disconnect starting relay.
The method of 16. starter control system control starter motors according to claim 14, is characterized in that, if engine anti-theft authentification failure sends engine lock stop signal;
Drive signal and/or two driving signal to disconnect starting relay according to engine locking signal cut first.
The method of 17. starter control system control starter motors according to claim 15, is characterized in that, further comprising the steps of:
Disconnecting after starting relay, starter motor is carried out to faut detection;
If starter motor exists fault, send starter motor fault message and preserve.
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