CN101240767A - Information integration based passenger car starting-up control system - Google Patents
Information integration based passenger car starting-up control system Download PDFInfo
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Abstract
The present invention relates to apassenger train car starting up controlled system based on information integrated which includes ignition switch information acquisition module, back cabin door switch information acquisition module and starter control module. Ignition switch information acquisition module and back cabin door switch information acquisition module are made up of microcontroller, CAN communication unit, switch information acquisition unit and supporting circuit respectively, and collects state information of ignition switch and back cabin door switch, and transfers to starter control module by CAN bus. The present invention possesses the beneficial effects: (1) implementing bus type control of passenger car starter without change passenger car starter; (2) on the basis of traditional passenger car starter controlled conditions and based on information integration, realizing multi-information synthetic judgment process and improving starting up controlled safety. (3) realizing functional spreading easily base on facing consumer demand.
Description
Technical field
The invention belongs to Auto Electronic Controlled System, especially a kind of based on the integrated passenger car starting-up control system of information.
Background technique
The function of vehicle starting system is under the control of control gear, is electrical source of power with the vehicle power, by clutch the electromagnetic torque of motor is passed to flywheel and makes engine start.
Along with the raising that people require vehicle dynamic quality, Security and travelling comfort, automobile ECU (Electronic Control Unit, electronic control unit) and electric control device are also in continuous increase.They not merely link together simply with load equipment, more are to carry out information interchange with peripheral unit and other ECU and electric control device, and through complicated control decision computing, send control command.In order to improve the utilization ratio of signal, require bulk data information between different automobile ECUs, to exchange and share, adopt the In-vehicle networking technology to realize that the integrated control of automobile electronic information makes the real-time control to each ECU of automobile become possibility.All use the In-vehicle networking technology to some extent in the present medium-to-high grade car, also gradually adopted advanced electron controls technology and In-vehicle networking technology on modern bus and the truck.In multiple In-vehicle networking technology, CAN (Controller Area Network, controller local area network) is with its good roadability, and promptly high reliability and unique design are particularly suitable for the interconnected communication between each ECU of Hyundai Motor.
Therefore, traditional passenger vehicle starting control mode is the demand of the integrated control of incompatibility automobile electronic information, a kind of passenger vehicle method for starting-controlling based on the integrated control of information must be proposed, and design passenger car starting-up control system corresponding, that possess EBI, to satisfy the requirement of adopting bus to realize the integrated control of automobile information.
Chinese patent publication number CN1459559, open day on December 3rd, 2003, the name of innovation and creation is called the starter motor of starter motor control gear and band control gear, this application case discloses a kind of starter motor that is easy to wiring, good anti-vibration, can easily constitutes incorporate starter motor control gear and band control gear with auxiliary switch, comprises auxiliary switch and control circuit.Chinese patent publication number CN2844471, open day on December 6th, 2006, the name of innovation and creation is called a kind of automobile starter control circuit device, this application case discloses the just charged work of time period that only main car sends activating signal in starting process of a kind of starter power line, all the other time power supplys are cut off, the power supply of starter motor and main frame general power disconnect, thereby guarantee the automobile starter control circuit device of the safety of vehicle in running.Chinese patent publication number CN101025140, open day on August 29th, 2007, the name of innovation and creation is called a kind of engine starter and control gear thereof, this application case discloses a kind of stable working, rapid, reliable, and has cancelled the engine starter and the control gear thereof of magnetic switch, overrunning clutch and shift fork.The deficiency of above file be will be not relevant with the vehicle starting process various signals to carry out information integrated, the software and hardware scheme of vehicle starting bus chemical control system is not provided, do not meet the requirement of automobile busization and electronic development trend.
Summary of the invention
The purpose of this invention is to provide a kind of based on bus and software control realize the passenger vehicle starting, prevent driver's mistake starting after the engine operation, improve starter motor operating life and bus safety based on the integrated passenger car starting-up control system of information, to overcome the deficiency of existing vehicle starting control technique.
In order to solve the problems of the technologies described above, technological scheme of the present invention is:
The present invention includes ignition switch information acquisition module, back door switching information acquisition module and starter motor control module.Ignition switch information acquisition module and back door switching information acquisition module are made up of microcontroller, CAN communication unit, switching information collecting unit and support circuit respectively, gather the status information of ignition switch and back door switch respectively, and give the starter motor control module by the CAN bus transfer; The starter motor control module is by microcontroller, the CAN communication unit, the switching information collecting unit, generator N/W pole tension comparing unit, the starter power control unit, starter relay control unit and support circuit are formed, gather the neutral switch status information, back switch starter status information and generator N/W utmost point status information, and constitute starter motor controlled conditions jointly with ignition switch status information and back door on off state information, by forming the starter motor control information after the microcontroller judgment processing, realize the connecting and disconnecting control of starter power and starter relay by starter power control unit and starter relay control unit.
The microcontroller of described ignition switch information acquisition module or back door switching information acquisition module or starter motor control module adopts 8 or 8 above single-chip microcomputers; Support that circuit is made of power circuit, reset circuit etc.; Integrated CAN controller in the microcontroller; Power circuit mainly is made up of 2 power modules, and power module UP1 is converted to the 5V stabilized power supply with automobile power source, is the wiper controller power supply; Power module UP2 isolates the 5V stabilized power supply of power module UP1 output, and output 5V voltage stabilizing insulating power supply is used for the CAN communication circuit.
The CAN communication unit of described ignition switch information acquisition module or back door switching information acquisition module or starter motor control module mainly is made of 1 CAN transceiver and 2 optocouplers; The CAN order wire links to each other with the CANL pin with the CANH pin of CAN transceiver through eliminator; The reception data input pin of CAN transceiver links to each other with the signal input part of optocoupler, and is linked to each other with the CAN reception data pin of microcontroller by the signal output part of optocoupler; The CAN of microcontroller sends data pin and links to each other with the signal input part of optocoupler, and is linked to each other with the data transmission pin of CAN transceiver by the signal output part of optocoupler.
The core devices of the switching information collecting unit of described ignition switch information acquisition module or back door switching information acquisition module or starter motor control module is a switching value input detection chip; Switching signal detects mouth with the programmable switch amount of switching value input detection chip and links to each other; Switching value input detection chip and microcontroller communicate by the SPI communication interface.
The generator N/W pole tension comparing unit of described starter motor control module mainly is made of amplifier, voltage-stabiliser tube, fixed value resistance and adjustable resistance; From the voltage signal of the generator N/W utmost point after resistance current limliting, voltage-stabiliser tube amplitude limit, divider resistance dividing potential drop, compare with comparative voltage, if the voltage magnitude of N/W end＞=i volt when i＜12,12 volt power-supply system (during 24 volts power-supply systems i＜6), then amplifier is exported high level signal; If the voltage magnitude of N/W end＜i volt when i＜12,12 volt power-supply system (during 24 volts of power-supply systems i＜6), amplifier output low level signal then.
The core devices of the starter power control unit of described starter motor control module is the power drive chip; The power drive chip output links to each other with the starter power input end; Power drive chip and microcontroller communicate by the SPI communication interface.
The core devices of described starter relay control unit is the power drive chip; The power drive chip output links to each other with the starter relay input end; Power drive chip and microcontroller communicate by the SPI communication interface; The feedback of status pin of power drive chip links to each other with micro controller I/O mouth.
Method for starting-controlling is before described: the CAN communication unit of starter motor control module receives igniting switching information and back door switching information, when ignition switch ST connects, and neutral position switch is connected, and back door switch disconnects, and back switch starter disconnects, and generator N/W pole tension＜i lies prostrate (i＜12 during 24 volts of power-supply systems, i＜6 during 12 volts of power-supply systems) time, microcontroller sends starter power connection information and starter relay is connected information to starter power control unit and starter relay control unit, connect by the power drive chip controls starter power and the starter relay of starter power control unit and starter relay control unit respectively, realize starting control; When ignition switch ST disconnected, microcontroller sent starter power and disconnects information to the starter power control unit, by the power drive chip controls starter power disconnection of starter power control unit; When generator N/W pole tension＞=i lies prostrate (i＜12 during 24 volts of power-supply systems, i＜6 during 12 volts of power-supply systems) time, microcontroller sends starter relay and disconnects information to the starter relay control unit, by the power drive chip controls starter relay disconnection of starter relay control unit.
Described back method for starting-controlling is: the CAN communication unit of starter motor control module receives igniting switching information and back door switching information, when after switch starter connect, and neutral position switch is connected, and back door switch connection, and ignition switch ST disconnects, and generator N/W pole tension＜i lies prostrate (i＜12 during 24 volts of power-supply systems, i＜6 during 12 volts of power-supply systems) time, microcontroller sends starter power connection information and starter relay is connected information to starter power control unit and starter relay control unit, connect by the power drive chip controls starter power and the starter relay of starter power control unit and starter relay control unit respectively, realize starting control; When the back switch starter disconnected, microcontroller sent starter power and disconnects information to the starter power control unit, by the power drive chip controls starter power disconnection of starter power control unit; When generator N/W pole tension＞=i lies prostrate (i＜12 during 24 volts of power-supply systems, i＜6 during 12 volts of power-supply systems) time, microcontroller sends starter relay and disconnects information to the starter relay control unit, by the power drive chip controls starter relay disconnection of starter relay control unit.
Because the present invention possesses total line traffic control and Digital Control function, compared with prior art, the invention has the beneficial effects as follows: (1) has realized the bus type control of passenger vehicle starter motor on the basis that does not change existing passenger vehicle starter motor; (2) on the basis of traditional passenger vehicle starter motor controlled conditions, integrated based on information, realize the comprehensive judgment processing of multiple information, improved the Security of starting control.(3) user oriented demand is easy to realize the function expansion.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Fig. 2 is a power circuit diagram of the present invention.
Fig. 3 is reset circuit figure of the present invention.
Fig. 4 is a CAN communication unit circuit diagram of the present invention.
Fig. 5 is ignition switch information acquisition circuit figure of the present invention.
Fig. 6 is back door switching information Acquisition Circuit figure of the present invention.
Fig. 7 is neutral switch of the present invention and back switch starter information acquisition circuit figure.
Fig. 8 is generator N/W pole tension comparison circuit figure of the present invention.
Fig. 9 is starter power control circuit figure of the present invention.
Figure 10 is starter relay control circuit figure of the present invention.
Figure 11 is a CAN initialization flowchart of the present invention.
Figure 12 is CAN message transmission flow figure of the present invention.
Figure 13 is that CAN message of the present invention receives flow chart.
Figure 14 is a preceding starter motor control flow chart of the present invention.
Figure 15 is a preceding starter motor control flow chart of the present invention.
Embodiment
The present invention is described in further detail below in conjunction with drawings and Examples.
It is the passenger car starting-up control system (Fig. 1) of core with ignition switch information acquisition module, back door switching information acquisition module and starter motor control module that the present invention is one.Microcontroller can adopt the single-chip microcomputer of band CAN controller more than 8 or 8, ignition switch information acquisition module and back door switching information acquisition module are made up of microcontroller, CAN communication unit, switching information collecting unit and support circuit respectively, gather the status information of ignition switch and back door switch respectively, and pass through the CAN bus transfer and give the starter motor control module, with Rule of judgment as starter motor control; The starter motor control module is by microcontroller, the CAN communication unit, the switching information collecting unit, generator N/W pole tension comparing unit, the starter power control unit, starter relay control unit and support circuit are formed, gather the neutral switch status information, back switch starter status information and generator N/W utmost point status information, and constitute starter motor controlled conditions jointly with ignition switch status information and back door on off state information, after the microcontroller judgment processing, form the starter motor control information, realize the connecting and disconnecting control of starter power and starter relay by starter power control unit and starter relay control unit.
Power circuit of the present invention mainly constitutes (Fig. 2) by power module UP1 and power module UP2.Power module UP1 is converted to the 5V stabilized power supply with vehicle-mounted 24V normal open power supply NC+, is the module for power supply under it; Power module UP2 isolates the 5V stabilized power supply of power module UP1 output, and output 5V voltage stabilizing insulating power supply is used for the CAN communication circuit.
The core devices of reset circuit of the present invention is watchdog chip U1 (Fig. 3).Output pin/the RESET that resets of watchdog chip U1 links to each other with the reset pin of microcontroller; The PE4 pin of microcontroller is used to export feeding-dog signal to watchdog chip U1; In order to realize auto-reset function, with watchdog chip U1 /the MR pin links to each other with/WDO pin.
CAN communication unit of the present invention is mainly by CAN transceiver U2, and optocoupler U3, U4 constitute (Fig. 4).CAN order wire CANH, CANL link to each other with the CANL pin with the CANH pin of CAN transceiver U2 through R6, R7, R8, R9 and C8, C9, C10 eliminator; The reception data input pin RXD of CAN transceiver U2 links to each other with the signal input pin CAODE of optocoupler U4 through R17, and is linked to each other with the CAN reception data pin RXCAN0 of microcontroller by the signal output pin OUT of optocoupler U4; The CAN of microcontroller sends data pin TXCAN0 and links to each other with the signal input pin CAODE of optocoupler U3 through R10, and is linked to each other with the data transmission pin TXD of CAN transceiver U2 by the signal output pin OUT of optocoupler U3.
The core devices of the switching information collecting unit in ignition switch information acquisition module of the present invention or back door switching information acquisition module or the starter motor control module mainly is respectively switching value input detection chip UK1, UP13 and UP14 (Fig. 5, Fig. 6, Fig. 7).Ignition switch ACC, ON, ST status information capture port detect mouthful SG5, a SG6 with the programmable switch amount of switching value input detection chip UK1 respectively, SG7 links to each other; Back door on off state information gathering port detects a mouthful SP0 with the programmable switch amount of switching value input detection chip UP13 and links to each other, and neutral switch, back switch starter status information capture port detect mouthful SP1, a SP2 with the programmable switch amount of switching value input detection chip UP14 respectively and link to each other; Switching value input detection chip UK1, UP13, UP14 communicate by the SPI0 communication interface with the microcontroller of each module respectively, and relevant pin is MOSI0, MISO0, SCK0 and CS1.
Generator N/W pole tension comparing unit in the starter motor control module of the present invention mainly constitutes (Fig. 8) by amplifier, voltage-stabiliser tube, fixed value resistance and adjustable resistance.From the voltage signal of the generator N/W utmost point after resistance R 1 current limliting, voltage-stabiliser tube DW1 amplitude limit, resistance R 2, R3 dividing potential drop, compare with the reference voltage of VDD after resistance R 4 and R5 dividing potential drop, if the voltage magnitude＞=i of N/W end lies prostrate (i＜12 during 24 volts of power-supply systems, i＜6 during 12 volts of power-supply systems), then amplifier is exported high level signal; If the voltage magnitude of N/W end＜i volt when i＜12,12 volt power-supply system (during 24 volts of power-supply systems i＜6), amplifier output low level signal then.
The core devices of the starter power control unit in the starter motor control module of the present invention is power drive chip UP7 (Fig. 9).The output terminal QG10 of power drive chip UP7 links to each other with the starter power input end; Power drive chip UP7 and microcontroller communicate by the SPI0 communication interface, and relevant pin is MOSI0, MISO0, SCK0 and CS1; Control signal from microcontroller is exported by the PD2 pin, links to each other with the IHS2 pin of power drive chip UP7.
The core devices of the starter relay control unit in the starter motor control module of the present invention is power drive chip UP4 (Figure 10).Power drive chip UP4 output terminal QB0 links to each other with the starter relay input end; The IN1 of power drive chip UP4 and IN2 pin are used to receive the input control signal of microcontroller; St1 and St2 pin are the feedback of status pin, link to each other with PA7 with micro controller I/O mouth PA6 respectively.
In Figure 11, before the CAN controller proper functioning, need carry out initialization to the CAN controller, by being set, its internal schema register select the CAN controller to enter reset mode.At first, after confirming to enter reset mode, start the CAN controller, and CAN bus communication baud rate is set by BTR0 and BTR1 register; Secondly, the examination filter registers is set, so that the CAN controller filters out the CAN message that needn't receive; At last, send the request of withdrawing from reset mode, after entering mode of operation, confirm whether the CAN controller is synchronous with bus communication, if synchronously, then finish the initialization of CAN controller.
In Figure 12, use inquiry mode to send the CAN message.When needing to send message, confirm at first whether CAN controller and bus be synchronous; As synchronously, promptly CANCTL0_SYNCH=1 then seeks the transmission buffer area of " sky ", in case there is the buffer area of transmission to be " sky ", promptly CANTFLG_TXFx=1 then writes the CAN message in the corresponding transmitter register; After the CAN message writes corresponding transmitter register, start process of transmitting, and with CANTFLG_TXFx set.
In Figure 13, use inquiry mode to receive the CAN message.In the circulation of principal function, constantly inquire about the CAN message and receive buffer state, be " expiring " in case receive buffer state, then from corresponding message receiving register, read the CAN message; Read finish after, discharge to receive buffer area, with CANRFLG_RXF set, and handle the message that receives.
In Figure 14, the starter motor control module receives, resolve the ignition switch information that receives from the CAN bus and the CAN message of back door switching information, and gathers generator N/W utmost point status information, neutral switch status information and back switch starter status information.When ignition switch ST connects, and neutral position switch is connected, and back door switch disconnects (promptly the back door is closed), and back switch starter disconnects, and generator N/W pole tension＜i volt (is that generator does not generate electricity, i＜12 during 24 volts of power-supply systems, i＜6 during 12 volts of power-supply systems) time, microcontroller sends starter power connection information and starter relay is connected information to starter power control unit and starter relay control unit, connect by the power drive chip controls starter power and the starter relay of starter power control unit and starter relay control unit respectively, realize starting control; When ignition switch ST disconnected, microcontroller sent starter power and disconnects information to the starter power control unit, by the power drive chip controls starter power disconnection of starter power control unit; When generator N/W pole tension＞=i volt (is a generator for electricity generation, i＜12 during 24 volts of power-supply systems, i＜6 during 12 volts of power-supply systems) time, microcontroller sends starter relay and disconnects information to the starter relay control unit, by the power drive chip controls starter relay disconnection of starter relay control unit.
In Figure 15, the starter motor control module receives, resolve the ignition switch information that receives from the CAN bus and the CAN message of back door switching information, and gathers generator N/W utmost point status information, neutral switch status information and back switch starter status information.When after switch starter connect, and neutral position switch is connected, and back door switch connection (promptly the back door is opened), and ignition switch ST disconnects, and generator N/W pole tension＜i volt (is that generator does not generate electricity, i＜12 during 24 volts of power-supply systems, i＜6 during 12 volts of power-supply systems) time, microcontroller sends starter power connection information and starter relay is connected information to starter power control unit and starter relay control unit, connect by the power drive chip controls starter power and the starter relay of starter power control unit and starter relay control unit respectively, realize starting control; When the back switch starter disconnected, microcontroller sent starter power and disconnects information to the starter power control unit, by the power drive chip controls starter power disconnection of starter power control unit; When generator N/W pole tension＞=i volt (is a generator for electricity generation, i＜12 during 24 volts of power-supply systems, i＜6 during 12 volts of power-supply systems) time, microcontroller sends starter relay and disconnects information to the starter relay control unit, by the power drive chip controls starter relay disconnection of starter relay control unit.
The content that is not described in detail in this specification belongs to related domain professional and technical personnel's known prior art.
Claims (10)
1. one kind based on the integrated passenger car starting-up control system of information, comprise ignition switch information acquisition module, back door switching information acquisition module and starter motor control module, it is characterized in that: ignition switch information acquisition module and back door switching information acquisition module are made up of microcontroller, CAN communication unit, switching information collecting unit and support circuit respectively, gather the status information of ignition switch and back door switch respectively, and give the starter motor control module by the CAN bus transfer; The starter motor control module is by microcontroller, the CAN communication unit, the switching information collecting unit, generator N/W pole tension comparing unit, the starter power control unit, starter relay control unit and support circuit are formed, gather the neutral switch status information, back switch starter status information and generator N/W utmost point status information, and constitute starter motor controlled conditions jointly with ignition switch status information and back door on off state information, by forming the starter motor control information after the microcontroller judgment processing, realize the connecting and disconnecting control of starter power and starter relay by starter power control unit and starter relay control unit.
2. as claimed in claim 1 based on the integrated passenger car starting-up control system of information, it is characterized in that: the microcontroller of ignition switch information acquisition module or back door switching information acquisition module or starter motor control module adopts 8 or 8 above single-chip microcomputers, supports that circuit is made of power circuit, reset circuit.
3. as claimed in claim 2 based on the integrated passenger car starting-up control system of information, it is characterized in that: integrated CAN controller in the microcontroller; Power circuit is made up of 2 power modules, and power module UP1 is converted to the 5V stabilized power supply with automobile power source, is the wiper controller power supply; Power module UP2 isolates the 5V stabilized power supply of power module UP1 output, and output 5V voltage stabilizing insulating power supply is used for the CAN communication circuit.
4. as claimed in claim 1 based on the integrated passenger car starting-up control system of information, it is characterized in that: the CAN communication unit of ignition switch information acquisition module or back door switching information acquisition module or starter motor control module is made of 1 CAN transceiver and 2 optocouplers; The CAN order wire links to each other with the CANL pin with the CANH pin of CAN transceiver through eliminator; The reception data input pin of CAN transceiver links to each other with the signal input part of optocoupler, and is linked to each other with the CAN reception data pin of microcontroller by the signal output part of optocoupler; The CAN of microcontroller sends data pin and links to each other with the signal input part of optocoupler, and is linked to each other with the data transmission pin of CAN transceiver by the signal output part of optocoupler.
5. as claimed in claim 1 based on the integrated passenger car starting-up control system of information, it is characterized in that: be provided with switching value input detection chip in the switching information collecting unit of ignition switch information acquisition module or back door switching information acquisition module or starter motor control module; Switching signal detects mouth with the programmable switch amount of switching value input detection chip and links to each other; Switching value input detection chip and microcontroller communicate by the SPI communication interface.
6. as claimed in claim 1 based on the integrated passenger car starting-up control system of information, it is characterized in that: be provided with the power drive chip in the starter power control unit of starter motor control module; The power drive chip output links to each other with the starter power input end; Power drive chip and microcontroller communicate by the SPI communication interface.
7. as claimed in claim 1 based on the integrated passenger car starting-up control system of information, it is characterized in that: be provided with the power drive chip in the starter relay control unit; The power drive chip output links to each other with the starter relay input end; Power drive chip and microcontroller communicate by the SPI communication interface; The feedback of status pin of power drive chip links to each other with micro controller I/O mouth.
8. as claimed in claim 1 based on the integrated passenger car starting-up control system of information, it is characterized in that: the generator N/W pole tension comparing unit of starter motor control module is made of amplifier, voltage-stabiliser tube, fixed value resistance and adjustable resistance; , after resistance current limliting, voltage-stabiliser tube amplitude limit, divider resistance dividing potential drop, compare from the voltage signal of the generator N/W utmost point, if the voltage magnitude of N/W end＞=i volt, then amplifier output high level signal with comparative voltage; If the voltage magnitude of N/W end＜i volt, then amplifier output low level signal.
9. as claimed in claim 1 based on the integrated passenger car starting-up control system of information, it is characterized in that: the CAN communication unit of starter motor control module receives igniting switching information and back door switching information, when ignition switch ST connects, and neutral position switch is connected, and back door switch disconnects, and back switch starter disconnects, and when generator N/W pole tension＜i lies prostrate, microcontroller sends starter power connection information and starter relay is connected information to starter power control unit and starter relay control unit, connect by the power drive chip controls starter power and the starter relay of starter power control unit and starter relay control unit respectively, realize starting control; When ignition switch ST disconnected, microcontroller sent starter power and disconnects information to the starter power control unit, by the power drive chip controls starter power disconnection of starter power control unit; When generator N/W pole tension＞=i lied prostrate, microcontroller sent starter relay and disconnects information to the starter relay control unit, by the power drive chip controls starter relay disconnection of starter relay control unit.
10. as claimed in claim 1 based on the integrated passenger car starting-up control system of information, it is characterized in that: the CAN communication unit of starter motor control module receives igniting switching information and back door switching information, when after switch starter connect, and neutral position switch is connected, and back door switch connection, and ignition switch ST disconnects, and when generator N/W pole tension＜i lies prostrate, microcontroller sends starter power connection information and starter relay is connected information to starter power control unit and starter relay control unit, connect by the power drive chip controls starter power and the starter relay of starter power control unit and starter relay control unit respectively, realize starting control; When the back switch starter disconnected, microcontroller sent starter power and disconnects information to the starter power control unit, by the power drive chip controls starter power disconnection of starter power control unit; When generator N/W pole tension＞=i lied prostrate, microcontroller sent starter relay and disconnects information to the starter relay control unit, by the power drive chip controls starter relay disconnection of starter relay control unit.
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