WO2014030190A1 - Control unit, semiconductor device, and method for controlling control unit - Google Patents

Control unit, semiconductor device, and method for controlling control unit Download PDF

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Publication number
WO2014030190A1
WO2014030190A1 PCT/JP2012/005304 JP2012005304W WO2014030190A1 WO 2014030190 A1 WO2014030190 A1 WO 2014030190A1 JP 2012005304 W JP2012005304 W JP 2012005304W WO 2014030190 A1 WO2014030190 A1 WO 2014030190A1
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WO
WIPO (PCT)
Prior art keywords
power supply
control unit
unit
power
sensor
Prior art date
Application number
PCT/JP2012/005304
Other languages
French (fr)
Japanese (ja)
Inventor
昌憲 栗本
Original Assignee
ルネサスエレクトロニクス株式会社
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Publication date
Application filed by ルネサスエレクトロニクス株式会社 filed Critical ルネサスエレクトロニクス株式会社
Priority to PCT/JP2012/005304 priority Critical patent/WO2014030190A1/en
Publication of WO2014030190A1 publication Critical patent/WO2014030190A1/en

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    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/54—Electrical circuits
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B77/00—Vehicle locks characterised by special functions or purposes
    • E05B77/02—Vehicle locks characterised by special functions or purposes for accident situations
    • E05B77/12—Automatic locking or unlocking at the moment of collision
    • E—FIXED CONSTRUCTIONS
    • E05—LOCKS; KEYS; WINDOW OR DOOR FITTINGS; SAFES
    • E05B—LOCKS; ACCESSORIES THEREFOR; HANDCUFFS
    • E05B81/00—Power-actuated vehicle locks
    • E05B81/54—Electrical circuits
    • E05B81/64—Monitoring or sensing, e.g. by using switches or sensors

Definitions

  • the present invention relates to a control unit, a semiconductor device, and a control method of the control unit, and can be suitably used for, for example, a control unit that controls unlocking of a door lock or the like, a semiconductor device, and a control method of the control unit.
  • a vehicle has a plurality of control units (ECU: Electronic Control Unit) that perform various controls such as an engine, a brake, and a power window.
  • ECU Electronic Control Unit
  • door lock control is performed to lock the door or window so that the door or window does not open carelessly.
  • Unlock control is also performed.
  • Patent Documents 1 to 4 are known as techniques related to such a conventional control unit.
  • control unit includes a power supply terminal to which main power is supplied, a detection terminal to which a sensor detection signal is input, a backup power supply unit, a power supply switching unit, and a lock release unit. ing.
  • the backup power supply unit generates backup power based on the main power supplied to the power terminal.
  • the power supply switching unit switches the power supply source from the main power supply to the backup power supply based on the detection signal input to the detection terminal.
  • the lock release unit unlocks the door lock or the window lock using the switched backup power supply as an operation power supply.
  • the door lock and the window lock can be unlocked more quickly and reliably in an emergency.
  • FIG. 1 is a schematic diagram of a vehicle equipped with a control unit according to Embodiment 1.
  • FIG. 2 is a configuration diagram illustrating a configuration of a control unit according to Embodiment 1.
  • FIG. FIG. 6 is a configuration diagram showing a configuration of a system including a control unit according to a second embodiment. 6 is a schematic cross-sectional view of a control unit according to Embodiment 2.
  • FIG. 6 is a flowchart showing a control method of the control unit according to the second embodiment.
  • 10 is an explanatory diagram for explaining an operation of a control unit according to Embodiment 2.
  • FIG. 10 is an explanatory diagram for explaining an operation of a control unit according to Embodiment 2.
  • FIG. 10 is a configuration diagram illustrating a configuration of a system including a control unit according to a third embodiment. 10 is a flowchart showing a control method of the control unit according to the third embodiment.
  • FIG. 10 is a configuration diagram showing a configuration of a system including a control unit according to a fourth embodiment.
  • FIG. 10 is a configuration diagram illustrating a configuration of a system including a control unit according to a fifth embodiment.
  • FIG. 1 shows an example of a vehicle 1 equipped with a control unit according to the first embodiment.
  • the vehicle 1 includes a plurality of control units, and FIG. 1 shows control units 100 to 105 as an example.
  • Each control unit can independently control various actuators and the like.
  • each control unit or a plurality of sensors can be connected to obtain information on other control units and sensors. It is also possible to control by using.
  • the control units may be communicably connected via an in-vehicle network such as CAN.
  • the control unit of the vehicle 1 is generally classified into a body system, a control system, and an information system.
  • a body system in FIG. 1, a door control unit 101 and a light control unit 102 are provided.
  • the body system includes mirror control, seat belt control, and the like, and also includes the control unit 100 according to the present embodiment.
  • the door control unit 101 is a control unit that controls a door lock and a power window.
  • the door control unit 101 locks / unlocks (unlocks) the door, locks / unlocks (unlocks), and opens / closes the window according to a manual operation on the lock switch or according to the running state of the vehicle.
  • the door control unit 101 is disposed in the vicinity of each door (window) in order to control a plurality of doors (windows).
  • the light control unit 102 is a control unit that controls on / off of the light.
  • the light control unit 102 turns on / off the light according to a manual operation on the light switch or according to ambient brightness.
  • the light control unit 102 is disposed in the vicinity of each light in order to control a plurality of lights such as a headlight and a taillight.
  • a brake control unit 103 and an engine control unit 104 are provided.
  • the control system includes steering control and airbag control.
  • the brake control unit 103 is a control unit that performs braking control such as ABS (Antilocked Braking System).
  • the brake control unit 103 controls the start / stop of braking and the braking force according to the operation of the brake pedal or according to the running state of the vehicle.
  • the brake control unit 103 is disposed in the vicinity of each brake in order to control a plurality of brakes.
  • the engine control unit 104 is a control unit that controls an engine mounted on the vehicle.
  • the engine control unit 104 performs engine start / stop and rotation control according to the operation of an ignition key, a switch, and an accelerator pedal, or according to the traveling state of the vehicle.
  • the engine control unit 104 is disposed in the vicinity of the engine in order to control the engine independently.
  • a navigation control unit 105 is provided in FIG.
  • the information system includes an audio system, a GPS system, and the like.
  • Navigation control unit 105 car navigation system.
  • the navigation control unit 105 displays a map on the display device, and performs voice guidance to the destination according to the position of the current vehicle.
  • the navigation control unit 105 is arranged on a dashboard in order to display a map or the like to an occupant.
  • the control unit 100 controls the unlocking of the door lock and window lock according to the detection of various sensors.
  • the control unit 100 may control the unlocking of one door and window, or may control the unlocking of all doors and windows.
  • a plurality of control units 100 are arranged in the vicinity of each door of the vehicle as shown in FIG.
  • one control unit 100 may be arranged near an arbitrary door, or may be arranged in the center of the vehicle.
  • control unit 100 is described as a control unit different from the existing door control unit 101 that controls the door lock and the power window.
  • the control unit 100 and the door control according to the present embodiment are described.
  • the unit 101 may be configured as one control unit.
  • FIG. 2 shows a configuration of the control unit 100 according to the present embodiment.
  • the control unit 100 includes a power supply terminal 111, a detection terminal 112, a backup power supply unit 113, a power supply switching unit 114, and a lock release unit 115.
  • the main power source 120 that is the main power source of the vehicle 1 is connected to the power terminal 111, and the main power source is supplied from the main power source unit 120.
  • a sensor 121 installed in the vehicle 1 is connected to the detection terminal 112, and a detection signal corresponding to the detection of the sensor 121 is input.
  • the backup power supply unit 113 generates a backup power supply based on the main power supply supplied to the power supply terminal 111.
  • the power supply switching unit 114 switches the power supply source from the main power supply to the backup power supply based on the detection signal input to the detection terminal 112.
  • the unlocking unit 115 unlocks the door lock or window lock using the switched backup power supply as an operation power supply.
  • control unit includes a backup power supply unit that generates a backup power supply based on the main power supply in the control unit. Then, based on the detection signal of the sensor, the power supply source (power supply path) is switched from the main power supply to the back amplifier power supply, and the unlocked operation is performed using the switched backup power supply as the operation power supply.
  • the backup power supply unit By providing a backup power supply unit, power supply switching unit, and lock release unit inside one control unit, even if a natural disaster or accident occurs and the main power supply becomes unstable, the backup power supply
  • the door lock and the window lock can be unlocked more quickly and reliably using. Therefore, in the event of an emergency such as a natural disaster or accident, the passenger can safely escape without being trapped in the electronically armed vehicle.
  • Embodiment 2 The second embodiment will be described below with reference to the drawings. In this embodiment, a specific configuration and operation of the control unit described in Embodiment 1 will be described.
  • FIG. 3 shows a configuration of the vehicle control system 2 including the control unit according to the present embodiment.
  • the vehicle control system 2 is mounted on the vehicle and controls the unlocking of the door lock and the window lock, as in FIG. 1 of the first embodiment.
  • the vehicle control system 2 includes a control unit 100, a main battery 30, a collision sensor 31, a temperature sensor 32, a humidity sensor 33, a door lock actuator 34, and a window lock actuator 35.
  • the main battery 30 is a main power source that supplies power to each unit mounted on the vehicle.
  • the main battery 30 is disposed in an engine room, and the power supply voltage is 12V.
  • the collision sensor 31, the temperature sensor 32, and the humidity sensor 33 are sensors for detecting an emergency abnormality such as a vehicle collision or a natural disaster such as a fire, flood, or earthquake. These sensors are an example of a sensor that detects an abnormality that requires the passenger to escape by releasing the door lock and the window lock, and may be another sensor such as a vibration sensor.
  • the collision sensor 31 is a sensor that detects a vehicle collision and outputs a detection signal in response to the collision detection.
  • the collision sensor 31 is an acceleration sensor or an impact sensor, and detects that the vehicle has collided and outputs a detection signal (collision detection signal) when the measured acceleration or impact exceeds a predetermined threshold.
  • the collision sensor 31 may be disposed on a door or bumper to detect a front / rear / right / left collision of the vehicle, or may be disposed at another position. By disposing the collision sensors 31 at a plurality of locations in the vehicle, it is possible to accurately detect a vehicle collision.
  • the collision sensor 31 can be a collision sensor for airbag control.
  • the temperature sensor 32 is a sensor that detects the temperature of the vehicle and outputs a detection signal according to the detected temperature.
  • the temperature sensor 32 detects an abnormal temperature when the measured temperature exceeds a predetermined threshold, and outputs a detection signal (temperature detection signal).
  • the temperature sensor 32 may be disposed in the engine room or the room, or may be disposed in another position in order to detect an engine fire or an abnormally high temperature in the room. By arranging the temperature sensors 32 at a plurality of locations in the vehicle, the temperature of the vehicle can be accurately detected.
  • the temperature sensor 32 may be a temperature sensor for an air conditioner, a temperature sensor for an engine (radiator), or a temperature sensor for fuel or a battery.
  • the humidity sensor 33 is a sensor that detects the humidity of the vehicle and outputs a detection signal according to the detected humidity. When the measured humidity exceeds a predetermined threshold, the humidity sensor 33 detects that the humidity is abnormal and outputs a detection signal (humidity detection signal).
  • the humidity sensor 33 may be disposed in the engine room or the room to detect the submergence of the vehicle, or may be disposed at other positions. By disposing the humidity sensors 33 at a plurality of locations in the vehicle, the humidity of the vehicle can be detected with high accuracy.
  • the humidity sensor 33 may be a humidity sensor for an air conditioner or a humidity sensor for an engine (intake air).
  • the door lock actuator 34 is an actuator for locking and unlocking (unlocking) the door.
  • the door lock actuator 34 is a motor. The door is locked or unlocked by rotating the motor in the locking or unlocking direction according to the input drive signal.
  • the window lock actuator 35 is an actuator that locks and unlocks (unlocks) the window.
  • the window lock actuator 35 is a motor, like the door lock actuator 34, and locks or unlocks the window by rotating the motor in the locking direction or unlocking direction according to the input drive signal. .
  • the control unit 100 controls the unlocking of the door lock and the window lock according to the detection of each sensor.
  • the control unit 100 is a control unit mounted on a vehicle as in FIGS. 1 and 2, and is also a vehicle-mounted microcomputer (microcomputer or microcontroller).
  • control unit 100 is a one-package semiconductor device including a semiconductor chip 10 for mounting a microcomputer.
  • the control unit 100 is configured by a single chip semiconductor chip, but may be configured by a plurality of chip semiconductor chips.
  • the control unit 100 includes a plurality of external terminals 201a to 201g (any of which is also referred to as an external terminal 201) for connection to an external device or the like.
  • the external terminals 201a and 201b are power supply terminals for supplying power.
  • the external terminal 201a is connected to the positive power supply terminal of the main battery 30.
  • the external terminal 201b is connected to the ground potential GND (vehicle body GND).
  • External terminals 201c to 201e are input terminals for inputting detection signals of the sensors.
  • the external terminal 201 c is connected to the output terminal of the collision sensor 31, the external terminal 201 d is connected to the output terminal of the temperature sensor 32, and the external terminal 201 e is connected to the output terminal of the humidity sensor 33.
  • External terminals 201f and 201g are output terminals for outputting a drive signal for releasing the door lock and window lock.
  • the external terminal 201 f is connected to the drive terminal of the door lock actuator 34, and the external terminal 201 g is connected to the drive terminal of the window lock actuator 35.
  • the semiconductor chip 10 includes a regulator 11, a power switch 12, a backup battery 13, a CPU (Central Processing Unit) 14, a memory 15, interfaces (I / F) 16 to 18, a system / power control unit 19, a door lock control unit 20, A window lock control unit 21 and an isolator 22 are provided.
  • the backup power supply unit 113 in FIG. 2 corresponds to the backup battery 13 in FIG. 3
  • the power supply switching unit 114 in FIG. 2 corresponds to the power switch 12, the CPU 14, and the system / power supply control unit 19 in FIG. 2 is equivalent to the door lock control unit 20 and the window lock control unit 21 of FIG.
  • the regulator 11 is a stabilized power supply circuit that supplies a stable power supply to the internal circuit.
  • the input terminal of the regulator 11 is connected to the external terminal 201a, and the main power source Vdd0 of the main battery 30 is supplied through the external terminal 201a.
  • the output terminal of the regulator 11 is connected to the power domain PD1 and to the first terminal of the power switch 12.
  • the regulator 11 generates a stable power supply (constant voltage power supply) Vdd1 based on the main power supply Vdd0 of the main battery 30.
  • the regulator 11 can also be said to be a conversion circuit that converts the main power supply Vdd0 (external power supply) into a stable power supply Vdd1 (internal power supply).
  • the main power supply Vdd0 is 12V as in a general vehicle battery
  • the stable power supply Vdd1 of the regulator 11 is 5V as in the operation power supply of a general internal circuit.
  • the regulator 11 supplies the stable power supply Vdd1 to the power supply domain PD1, and also supplies the stable power supply Vdd1 to the power supply domain PD2 and the backup battery 13 when the power switch 12 is on.
  • the power switch 12 is a switching circuit that switches the power path (supply source) to the power domain PD2.
  • the power switch 12 switches on / off (connection / disconnection) between the first terminal and the second terminal in accordance with a switching signal input to the control terminal.
  • the power switch 12 has a control terminal connected to the system / power control unit 19, a first terminal connected to the output terminal of the regulator 11, and a second terminal connected to the backup battery 13 and the power domain PD2.
  • the power switch 12 is configured by an NMOS transistor or a PMOS transistor. That is, the control terminal is a gate, the first terminal is a drain or source, and the second terminal is a source or drain.
  • the power switch 12 is turned on according to the control of the system / power control unit 19, connects between the regulator 11, the backup battery 13 and the power domain PD 2, and is turned off according to the control of the system / power control unit 19. Then, the regulator 11, the backup battery 13, and the power domain PD2 are disconnected.
  • the power switch 12 is provided between the main battery 11 (regulator 30) and the power domain PD2.
  • the power switch 12 is provided between the backup battery 13 and the power domain PD2, The connection with the power domain PD2 may be turned on / off.
  • the backup battery 13 is a backup power source that becomes a power source in place of the main battery 30 when an abnormality such as a collision occurs.
  • the backup battery 13 has one end connected to the second terminal of the power switch 12 and the power domain PD2, and the other end connected to the ground potential GND.
  • the backup battery 13 is a large capacity capacitor. By configuring the backup battery 13 with a capacitor, the backup battery can be easily formed in the semiconductor chip.
  • the backup battery 13 is charged by the stable power supply Vdd1 of the regulator 11 when the power switch 12 is on.
  • the backup battery 13 supplies the backup power source Vdd2 to the power domain PD2 when the power switch 12 is off.
  • the stable power supply Vdd1 and the backup power supply Vdd2 are the same power supply voltage, for example, 5V.
  • the backup battery 13 may be arranged in the same chip as the power supply destination circuit (power domain PD2) as in the present embodiment, or may be arranged in another chip in the same package. Good.
  • the CPU 14, the memory 15, and the interfaces (I / F) 16 to 18 are commonly connected to the internal bus 23.
  • the CPU 14, the memory 15, and the interfaces 16 to 18 belong to the power domain PD1 and are commonly supplied with power from a power line (not shown) of the power domain PD1.
  • the CPU 14 is a control unit that controls the operation of the control unit (microcomputer).
  • the memory 15 stores a control program and various data necessary for the operation of the CPU 14.
  • This control program is a program in which each step of the control method according to the present embodiment, which will be described later with reference to FIG. CPU14 controls the operation
  • Interfaces (I / F) 16 to 18 convert detection signals of the sensors into interrupt signals (internal control signals).
  • the interfaces 16 to 18 generate an interrupt signal when each sensor outputs a detection signal, and cause the CPU 14 to execute an interrupt process.
  • the input terminal of the interface 16 is connected to the external terminal 201c, and the detection signal of the collision sensor 31 is input through the external terminal 201c.
  • the output terminal of the interface 16 is connected to the internal bus 23, and outputs an interrupt signal (collision interrupt signal) corresponding to the detection signal of the collision sensor 31 to the CPU 14 via the internal bus 23.
  • the input terminal of the interface 17 is connected to the external terminal 201d, and the detection signal of the temperature sensor 32 is input through the external terminal 201d.
  • the output terminal of the interface 17 is connected to the internal bus 23, and outputs an interrupt signal (temperature interrupt signal) corresponding to the detection signal of the temperature sensor 32 to the CPU 14 via the internal bus 23.
  • the input terminal of the interface 18 is connected to the external terminal 201e, and the detection signal of the humidity sensor 33 is input through the external terminal 201e.
  • the output terminal of the interface 18 is connected to the internal bus 23, and outputs an interrupt signal (humidity interrupt signal) corresponding to the detection signal of the humidity sensor 33 to the CPU 14 via the internal bus 23.
  • the system / power control unit 19, the door lock control unit 20, and the window lock control unit 21 are commonly connected to the internal bus 24.
  • the system / power control unit 19, the door lock control unit 20, the window lock control unit 21, and the isolator 22 belong to the power domain PD2 and are commonly supplied with power from a power line (not shown) of the power domain PD2.
  • the system / power control unit 19 controls the operating power of the control unit 100.
  • the system / power supply control unit 19 controls the power supply path to the power supply domain PD2, and also controls the unlocking of the door lock and the window lock.
  • the system / power control unit 19 Upon receiving an unlocking instruction from the CPU 14, the system / power control unit 19 controls the power switch 12 to switch the power path, and further outputs an unlock command to the door lock control unit 20 and the window lock control unit 21. Release the door lock and window lock.
  • the door lock control unit 20 outputs a drive signal for unlocking to the door lock actuator 34 when receiving the unlock command from the system / power control unit 19.
  • An input terminal of the door lock control unit 20 is connected to the internal bus 24, and a lock release command is notified from the system / power control unit 19 via the internal bus 24.
  • the output terminal of the door lock control unit 20 is connected to the external terminal 201f, and outputs a drive signal for unlocking to the door lock actuator 34 via the external terminal 201f.
  • the window lock control unit 21 outputs a drive signal for unlocking to the window lock actuator 35 upon receiving an unlock command from the system / power control unit 19.
  • An input terminal of the window lock control unit 21 is connected to the internal bus 24, and a lock release command is notified from the system / power control unit 19 via the internal bus 24.
  • the output terminal of the window lock control unit 21 is connected to the external terminal 201g, and outputs a drive signal for unlocking to the window lock actuator 35 via the external terminal 201g.
  • the power domain in the semiconductor chip 10 is separated into a power domain PD1 that is directly supplied with power from the regulator 11 and a power domain PD2 that is supplied with power via the power switch 12. Since the power domain PD2 includes only the circuits necessary for unlocking including the system / power control unit 19, the door lock control unit 20, and the window lock control unit 21, the power required in an emergency can be suppressed. The lock can be released quickly and reliably, and the circuit scale of the backup battery 13 can be reduced.
  • the isolator 22 electrically isolates the power supply domain PD1 and the power supply domain PD2 and interrupts signal transmission. That is, the isolator 22 prevents an adverse effect on the power domain PD2 due to the signal of the power domain PD1 when the main battery 30 becomes unstable and the power supply to the power domain PD1 is cut off.
  • the isolator 22 is connected between the CPU 14 and the system / power supply control unit 19. For example, a signal from the CPU 14 to the system / power supply control unit 19 is blocked in accordance with control from the system / power supply control unit 19.
  • the isolator 22 is an insulating circuit, and for example, an AND gate or an OR gate is used according to the logic.
  • control unit 100 is disposed in the vehicle and is less susceptible to external pressure than the main battery 30 in the engine room.
  • wiring shield tape that is highly waterproof and heat resistant.
  • the package of the control unit 100 is preferably a heat / waterproof package having heat resistance and waterproofness.
  • FIG. 4 is a schematic sectional view of the control unit 100 and shows an example in which the control unit 100 is configured by a heat resistant / waterproof package.
  • each circuit shown in FIG. 3, such as the backup battery 13, the system / power supply control unit 19, the door lock control unit 20, and the like is mounted on the substrate 10a of the semiconductor chip 10. .
  • Each circuit mounted on the substrate 10a is sealed with a resin 10b.
  • the resin 10b is a package resin having waterproofness and heat resistance.
  • the resin 10b is an epoxy resin or a phenol resin.
  • a plurality of external terminals 201 are connected to the substrate 10a.
  • the external terminal 201 is fixed to the waterproof / heat resistant connector 202.
  • a cable 210 is connected to the waterproof / heat-resistant connector 202, and the control unit 100 and the sensors 31 to 33 are electrically connected via the cable 210.
  • the waterproof / heat-resistant connector 202 is formed of PBT resin (polybutylene terephthalate), and the external terminal 201 is subjected to waterproof / heat-resistant treatment.
  • the surface of the cable 210 is covered with a waterproof / heat-resistant tube (shield) 211, and a waterproof / heat-resistant connector 212 is provided at the tip of the cable 210.
  • the waterproof / heat resistant tube 211 is made of silicon or a fluoropolymer.
  • the waterproof / heat resistant connector 202 of the control unit 100 is a female connector
  • the waterproof / heat resistant connector 212 of the cable 210 is a male connector
  • the waterproof / heat resistant connector 212 is inserted into the waterproof / heat resistant connector 202 and fitted.
  • the connector 210 By providing a connector with waterproof and heat resistance, it is possible to reduce the inundation from the mounting part of the external terminal, so that it can be unlocked reliably without being affected by the outside even in the event of an accident or disaster . Since the cable 210 is covered with a waterproof and heat-resistant tube, the sensor signal can be stably transmitted even in the event of an accident or disaster, so that the lock can be reliably released.
  • the control unit 100 performs a normal operation (S100).
  • the system / power control unit 19 controls the power switch 12 to be on as shown in FIG.
  • the stable power supply Vdd1 is supplied from the main battery 30 through the regulator 11 and the power switch 12 into the power domain PD2, and charging of the backup battery 13 is also started at that time.
  • an external factor is generated and the sensor is activated (S101).
  • the collision sensor 31 operates to detect a collision, and a detection signal is output from the collision sensor 31 to the interface 16.
  • an interrupt occurs to the CPU 14 in response to the detection of the sensor (S102). Since the detection signal is input from the collision sensor 31, the interface 16 generates an interrupt signal and outputs the interrupt signal to the CPU 14, and the CPU 14 executes an interrupt process.
  • the CPU 14 instructs the system / power control unit 19 to release the lock (S103). Since the CPU 14 has received an interrupt signal due to collision detection from the interface 16, the CPU 14 instructs the system / power control unit 19 to release the lock.
  • the power switch 12 switches the power path (S104). Since the system / power control unit 19 has received the unlocking instruction from the CPU 14, the system / power control unit 19 controls the power switch 12 to be off as shown in FIG. 7.
  • the power switch 12 disconnects the main battery 30 and the regulator 11 from the backup battery 13 and the power domain PD2, and cuts off the power supply from the main battery 30 to the power domain PD2. For this reason, the power supply path is switched to supply power from the backup battery 13.
  • the backup battery 13 supplies a voltage to the power domain PD2 for a certain period by discharging the stored charge.
  • the isolator 22 separates the power supply domain PD1 and the power supply domain PD2 so that the shutoff signal does not circulate to the system / power supply control unit 19 from the CPU 14 disposed in the shutoff power supply domain PD1.
  • the system / power supply control unit 19 outputs a lock release command to the door lock control unit 20 and the window lock control unit 21 after confirming that the power supply path has been switched.
  • the door lock control unit 20 outputs a drive signal to the door lock actuator 34 to release the door lock.
  • the window lock control unit 21 outputs a drive signal to the window lock actuator 35 to release the window lock. Thereby, the door lock and the window lock are released, and the door and the window can be freely opened.
  • the power path can be switched from the external main battery to the backup battery, and the door lock and window lock can be released, so that in the event of an emergency, it is possible to escape outside the vehicle without being trapped inside the vehicle.
  • control unit according to the second embodiment is an example in which a control operation corresponding to detection of an engine key is performed for crime prevention.
  • FIG. 8 shows a configuration of the vehicle control system 2 including the control unit according to the present embodiment.
  • a key sensor 36 is connected to the control unit 100.
  • Other configurations are the same as those in FIG.
  • the key sensor 36 is a sensor that detects whether or not a key (ignition key) is inserted into the key cylinder, and outputs a key insertion state. For example, the key sensor 36 outputs a detection signal indicating an insertion state when a key is inserted into the key cylinder, and outputs a detection signal indicating a non-insertion state when a key is not inserted into the key cylinder. The key sensor 36 may output a detection signal indicating insertion when the key is inserted into the key cylinder, and may output a detection signal indicating non-insertion when the key is extracted from the key cylinder. When the vehicle is a keyless system, on / off of the ignition switch may be detected instead of inserting / not inserting the key.
  • the control unit 100 includes an external terminal 201h in addition to the external terminals 201a to 201g.
  • the external terminal 201 h is connected to the output terminal of the key sensor 36 and is an input terminal for inputting a detection signal of the key sensor 36.
  • the semiconductor chip 10 includes an interface 25 in addition to the interfaces 16-18.
  • the input terminal of the interface 25 is connected to the external terminal 201h, and the detection signal of the key sensor 36 is input through the external terminal 201h.
  • An output terminal of the interface 25 is connected to the internal bus 23, and outputs a detection signal of the key sensor 36 to the CPU 14 via the internal bus 23.
  • the interface 25 may output a detection signal indicating the key insertion state of the key sensor 36 in response to an inquiry from the CPU 14, or may output an interrupt signal corresponding to the detection signal of the key sensor 36 to the CPU 14.
  • FIG. 9 shows a control method of the control unit according to the present embodiment.
  • the determination process of S ⁇ b> 106 is added compared to FIG. 5 of the second embodiment.
  • Other processes are the same as those in FIG.
  • the CPU 14 determines whether the engine is operating and whether an engine key is inserted (S106). For example, the CPU 14 makes an inquiry to the interface 16 and obtains a detection signal from the key sensor 36 to determine the key insertion state.
  • the control unit 100 is connected to an engine control unit for engine control, receives an operating state of the engine from the engine control unit, and determines whether the engine is operating.
  • the key sensor determines whether to release the lock according to the insertion state of the engine key and the operation state of the engine. As a result, unlocking is performed only when necessary, and it is possible to avoid unlocking with an external pressure for crime purposes, thereby preventing crime.
  • FIG. 10 shows a configuration of the vehicle control system 2 including the control unit according to the present embodiment.
  • the control unit 100 includes one semiconductor chip 10
  • the control unit 100 in FIG. 10 includes a semiconductor chip 41 for mounting a microcomputer and a semiconductor chip 42 for mounting a backup battery. And. Except for the chip configuration, it is the same as FIG.
  • the semiconductor chip 42 includes the backup battery 13 in the configuration of FIG.
  • the semiconductor chip 41 has a configuration other than the backup battery 13 in the configuration of FIG.
  • the semiconductor chip 41 and the semiconductor chip 42 are connected via a power interface pin 43.
  • the power switch 12 is turned on by the system / power control unit 19, and the power Vdd1 from the regulator 11 is supplied to the power domain PD1 and the power domain PD2. At that time, electric charge is charged from the regulator 11 to the backup battery 13 via the power interface pin 43.
  • the system / power control unit 19 turns off the power switch 12 via an interrupt to the CPU 14, whereby the power supply path to the power domain PD2 is switched from the regulator 11 to the backup battery 13. Then, the electric charge charged in the backup battery 13 is supplied to the power domain PD2 via the power interface pin 43. After the backup battery 13 is normally supplied, the door lock control unit 20 and the window lock control unit 21 release the door lock and the window lock according to an instruction from the system / power control unit 19.
  • the same effect as in the second embodiment can be obtained even when the backup battery is a separate chip with respect to the second embodiment. That is, it is possible to switch to the backup battery in an emergency such as an accident and to release the door lock and the window lock more quickly and reliably.
  • a backup battery having a larger capacity can be provided by providing the semiconductor chip for the backup battery, a circuit necessary for unlocking can be operated quickly and reliably.
  • FIG. 11 shows a configuration of the vehicle control system 2 including the control unit according to the present embodiment.
  • the control unit 100 includes one semiconductor chip 10
  • the control unit 100 in FIG. 11 includes a semiconductor chip 51 for mounting a microcomputer, a system / power supply control unit, and a backup battery.
  • a semiconductor chip 52 for mounting Except for the chip configuration, it is the same as FIG.
  • the semiconductor chip 51 includes a regulator 11, a CPU 14, a memory 15, and interfaces 16 to 18 in the configuration shown in FIG.
  • the semiconductor chip 52 includes a power switch 12, a backup battery 13, a system / power control unit 19, a door lock control unit 20, a window lock control unit 21, and an isolator 22 in the configuration of FIG. 3.
  • the semiconductor chip 51 and the semiconductor chip 52 are connected via a power interface pin 53 and a signal interface pin 54 (interface signal) between the CPU 14 and the system / power controller 19.
  • the power switch 12 is turned on by the system / power control unit 19, and the power Vdd1 from the regulator 11 is supplied to the power domain PD1 and the power domain PD2. At this time, electric charge is charged from the regulator 11 to the backup battery 13 via the power interface pin 53.
  • a command is transmitted to the system / power control unit 19 via the signal interface pin 54 (inter-chip interface signal) via an interrupt to the CPU 14. Then, when the system / power control unit 19 turns off the power switch 12, the power supply path to the power domain PD2 is switched from the regulator 11 to the backup battery 13, and the charge charged in the backup battery 13 is transferred to the power domain PD2. Supplied. After the backup battery 13 is normally supplied, the door lock control unit 20 and the window lock control unit 21 release the door lock and the window lock according to an instruction from the system / power control unit 19.
  • the backup battery and the system / power supply control unit are separate chips from the second embodiment, the same effect as the second embodiment can be obtained. That is, it is possible to switch to the backup battery in an emergency such as an accident and to release the door lock and the window lock more quickly and reliably.
  • the power domain PD2 including the backup battery and the system / power control unit as a separate chip, it is possible to make a semiconductor chip having only a circuit that operates in the event of an abnormality, and a higher speed operation is possible.
  • the lock circuit is performed according to the detection results of the collision sensor, the temperature sensor, the humidity sensor, and the key sensor, but the emergency state may be detected by other means.
  • the power supply voltage of the main battery may become unstable.
  • a power supply voltage detection unit that detects the voltage of the main battery is provided, and the power supply voltage of the main battery drops below a predetermined value.
  • the CPU may be interrupted to switch the power supply path and release the lock. Thereby, even when the power supply voltage of the main battery is unstable, the lock can be reliably released.
  • the door lock and the window lock are unlocked, but other controls may be performed in an emergency.
  • the vehicle may be stopped by braking via the brake control unit, or the engine may be stopped via the engine control unit. After reaching a state where it can be safely escaped from the vehicle by braking and stopping the engine, unlocking may be performed as in the above embodiment.

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Abstract

A control unit (100) according to one embodiment comprises: a power supply terminal (111) to which a main power supply is to be supplied; a detection terminal (112) to which a detection signal from a sensor is to be input; a backup power supply unit (113) which generates a backup power supply on the basis of the main power supply supplied to the power supply terminal (111); a power supply switching unit (114) which switches a supply source of the power supply from the main power supply to the backup power supply on the basis of the detection signal input to the detection terminal (112); and an unlock unit (115) which unlocks door lock or window lock utilizing the switched backup power supply as an operation power supply.

Description

制御ユニット、半導体装置及び制御ユニットの制御方法Control unit, semiconductor device and control unit control method
　本発明は、制御ユニット、半導体装置及び制御ユニットの制御方法に関し、例えば、ドアロック等のロック解除を制御する制御ユニット、半導体装置及び制御ユニットの制御方法に好適に利用できるものである。 The present invention relates to a control unit, a semiconductor device, and a control method of the control unit, and can be suitably used for, for example, a control unit that controls unlocking of a door lock or the like, a semiconductor device, and a control method of the control unit.
　従来から車両には、エンジンやブレーキ、パワーウィンドウ等の各種制御を行う複数の制御ユニット（ＥＣＵ：Electronic Control Unit）が搭載されている。このような従来の制御ユニットでは、車両の走行中に乗員の安全を確保するため、不用意にドアやウィンドウが開かないようドアやウィンドウをロックするドアロック制御が行われている。さらに、従来の制御ユニットでは、ドアロックやウィンドウロックの状態で車両の衝突事故等が発生すると、乗員が脱出できずに危険な状態となるため、衝突時にドアロックやウィンドウロックを解除するロック解除（アンロック）制御も行われている。 Conventionally, a vehicle has a plurality of control units (ECU: Electronic Control Unit) that perform various controls such as an engine, a brake, and a power window. In such a conventional control unit, in order to ensure the safety of the occupant during traveling of the vehicle, door lock control is performed to lock the door or window so that the door or window does not open carelessly. Furthermore, in the case of a conventional control unit, if a vehicle collision accident occurs in the door lock or window lock state, the occupant cannot escape and is in a dangerous state. (Unlock) control is also performed.
　例えば、このような従来の制御ユニットに関する技術として特許文献１～４が知られている。 For example, Patent Documents 1 to 4 are known as techniques related to such a conventional control unit.
特開平０９－２７３３４２号公報JP 09-273342 A 特開２００３－０９７１２３号公報JP 2003-097123 A 特開２００９－１６６６３０号公報JP 2009-166630 A 特開平０７－２６９２０８号公報JP 07-269208 A
　車両の衝突時や自然災害発生時等のような緊急時には、乗員ができるだけ早く車外へ脱出できるようにするため、ドアロックやウィンドウロックを一刻でも早く解除することが強く望まれる。 In the event of an emergency such as a vehicle collision or a natural disaster, it is strongly desired to release the door lock and window lock as soon as possible so that the passenger can escape outside the vehicle as soon as possible.
　しかしながら、従来、このような観点について十分な検討がなされていなかった。このため、従来の制御ユニットでは、緊急時にドアロックやウィンドウロック等のロック解除をより早く確実に行うことは困難であるという問題がある。 However, sufficient studies have not been made on this viewpoint. For this reason, in the conventional control unit, there is a problem that it is difficult to quickly and reliably unlock the door lock and the window lock in an emergency.
　その他の課題と新規な特徴は、本明細書の記述および添付図面から明らかになるであろう。 Other issues and novel features will become clear from the description of the present specification and the accompanying drawings.
　一実施の形態によれば、制御ユニットは、メイン電源が供給される電源端子と、センサの検出信号が入力される検出端子と、バックアップ電源部と、電源切り替え部と、ロック解除部とを備えている。 According to one embodiment, the control unit includes a power supply terminal to which main power is supplied, a detection terminal to which a sensor detection signal is input, a backup power supply unit, a power supply switching unit, and a lock release unit. ing.
　バックアップ電源部は、電源端子に供給されたメイン電源に基づきバックアップ電源を生成する。電源切り替え部は、検出端子に入力された検出信号に基づき電源の供給源をメイン電源からバックアップ電源に切り替える。ロック解除部は、切り替えられたバックアップ電源を動作電源としてドアロックまたはウィンドウロックのロック解除を行う。 The backup power supply unit generates backup power based on the main power supplied to the power terminal. The power supply switching unit switches the power supply source from the main power supply to the backup power supply based on the detection signal input to the detection terminal. The lock release unit unlocks the door lock or the window lock using the switched backup power supply as an operation power supply.
　前記一実施の形態によれば、緊急時により早く確実にドアロックやウィンドウロックのロック解除を行うことができる。 According to the embodiment, the door lock and the window lock can be unlocked more quickly and reliably in an emergency.
実施の形態１に係る制御ユニットを搭載した車両の模式図である。1 is a schematic diagram of a vehicle equipped with a control unit according to Embodiment 1. FIG. 実施の形態１に係る制御ユニットの構成を示す構成図である。2 is a configuration diagram illustrating a configuration of a control unit according to Embodiment 1. FIG. 実施の形態２に係る制御ユニットを含むシステムの構成を示す構成図である。FIG. 6 is a configuration diagram showing a configuration of a system including a control unit according to a second embodiment. 実施の形態２に係る制御ユニットの模式断面図である。6 is a schematic cross-sectional view of a control unit according to Embodiment 2. FIG. 実施の形態２に係る制御ユニットの制御方法を示すフローチャートである。6 is a flowchart showing a control method of the control unit according to the second embodiment. 実施の形態２に係る制御ユニットの動作を説明するための説明図である。10 is an explanatory diagram for explaining an operation of a control unit according to Embodiment 2. FIG. 実施の形態２に係る制御ユニットの動作を説明するための説明図である。10 is an explanatory diagram for explaining an operation of a control unit according to Embodiment 2. FIG. 実施の形態３に係る制御ユニットを含むシステムの構成を示す構成図である。FIG. 10 is a configuration diagram illustrating a configuration of a system including a control unit according to a third embodiment. 実施の形態３に係る制御ユニットの制御方法を示すフローチャートである。10 is a flowchart showing a control method of the control unit according to the third embodiment. 実施の形態４に係る制御ユニットを含むシステムの構成を示す構成図である。FIG. 10 is a configuration diagram showing a configuration of a system including a control unit according to a fourth embodiment. 実施の形態５に係る制御ユニットを含むシステムの構成を示す構成図である。FIG. 10 is a configuration diagram illustrating a configuration of a system including a control unit according to a fifth embodiment.
（実施の形態１）
　以下、図面を参照して実施の形態１について説明する。図１は、実施の形態１に係る制御ユニットを搭載した車両１の一例を示している。この車両１は複数の制御ユニットを備えており、図１では一例として制御ユニット１００～１０５を図示している。なお、各制御ユニットはそれぞれ独立して各種アクチュエータ等の制御を行うことが可能であり、また、各制御ユニット間や複数のセンサ（不図示）を接続し、他の制御ユニットやセンサの情報を用いて制御を行うことも可能である。例えば、各制御ユニット間はＣＡＮなどの車載ネットワークを介して通信可能に接続してもよい。 (Embodiment 1)
The first embodiment will be described below with reference to the drawings. FIG. 1 shows an example of a vehicle 1 equipped with a control unit according to the first embodiment. The vehicle 1 includes a plurality of control units, and FIG. 1 shows control units 100 to 105 as an example. Each control unit can independently control various actuators and the like. Also, each control unit or a plurality of sensors (not shown) can be connected to obtain information on other control units and sensors. It is also possible to control by using. For example, the control units may be communicably connected via an in-vehicle network such as CAN.
　車両１の制御ユニットは、一般的に、ボディ系システム、制御系システム、情報系システムに分類される。ボディ系システムとして、図１では、ドア制御ユニット１０１、ライト制御ユニット１０２を備えている。ボディ系システムには、その他、ミラー制御やシートベルト制御等が含まれ、本実施の形態に係る制御ユニット１００も含まれる。 The control unit of the vehicle 1 is generally classified into a body system, a control system, and an information system. As a body system, in FIG. 1, a door control unit 101 and a light control unit 102 are provided. In addition, the body system includes mirror control, seat belt control, and the like, and also includes the control unit 100 according to the present embodiment.
　ドア制御ユニット１０１は、ドアロックやパワーウィンドウの制御を行う制御ユニットである。ドア制御ユニット１０１は、ロックスイッチに対する手動操作に応じて、または、車両の走行状態に応じて、ドアのロック／解除（アンロック）やウィンドウのロック／アンロック（解除）及び開閉を行う。例えば、ドア制御ユニット１０１は、複数のドア（ウィンドウ）をそれぞれ制御するために、各ドア（ウィンドウ）の近傍に配置されている。 The door control unit 101 is a control unit that controls a door lock and a power window. The door control unit 101 locks / unlocks (unlocks) the door, locks / unlocks (unlocks), and opens / closes the window according to a manual operation on the lock switch or according to the running state of the vehicle. For example, the door control unit 101 is disposed in the vicinity of each door (window) in order to control a plurality of doors (windows).
　ライト制御ユニット１０２は、ライトのオン／オフを制御する制御ユニットである。ライト制御ユニット１０２は、ライトスイッチに対する手動操作に応じて、または、周辺の明るさ応じて、ライトのオン／オフを行う。ライト制御ユニット１０２は、ヘッドライトやテールライト等の複数のライトをそれぞれ制御するために、各ライトの近傍に配置されている。 The light control unit 102 is a control unit that controls on / off of the light. The light control unit 102 turns on / off the light according to a manual operation on the light switch or according to ambient brightness. The light control unit 102 is disposed in the vicinity of each light in order to control a plurality of lights such as a headlight and a taillight.
　制御系システムとして、図１では、ブレーキ制御ユニット１０３、エンジン制御ユニット１０４を備えている。制御系システムには、その他、ステアリング制御やエアバック制御等が含まれる。 As a control system, in FIG. 1, a brake control unit 103 and an engine control unit 104 are provided. In addition, the control system includes steering control and airbag control.
　ブレーキ制御ユニット１０３は、ＡＢＳ（Antilocked Braking System）などのブレーキングの制御を行う制御ユニットである。ブレーキ制御ユニット１０３は、ブレーキペダルの操作に応じて、または、車両の走行状態に応じて、ブレーキングの開始／停止やブレーキ力を制御する。例えば、ブレーキ制御ユニット１０３は、複数のブレーキをそれぞれ制御するために、各ブレーキの近傍に配置されている。 The brake control unit 103 is a control unit that performs braking control such as ABS (Antilocked Braking System). The brake control unit 103 controls the start / stop of braking and the braking force according to the operation of the brake pedal or according to the running state of the vehicle. For example, the brake control unit 103 is disposed in the vicinity of each brake in order to control a plurality of brakes.
　エンジン制御ユニット１０４は、車両に搭載されたエンジンの制御を行う制御ユニットである。エンジン制御ユニット１０４は、イグニッションキーやスイッチ、アクセルペダルの操作に応じて、または、車両の走行状態に応じて、エンジンの始動／停止や回転制御を行う。例えば、エンジン制御ユニット１０４は、エンジンを独立して制御するために、エンジンの近傍に配置されている。 The engine control unit 104 is a control unit that controls an engine mounted on the vehicle. The engine control unit 104 performs engine start / stop and rotation control according to the operation of an ignition key, a switch, and an accelerator pedal, or according to the traveling state of the vehicle. For example, the engine control unit 104 is disposed in the vicinity of the engine in order to control the engine independently.
　情報系システムとして、図１では、ナビゲーション制御ユニット１０５を備えている。情報系システムには、その他、オーディオシステムやＧＰＳシステム等が含まれる。 As an information system, a navigation control unit 105 is provided in FIG. In addition, the information system includes an audio system, a GPS system, and the like.
　ナビゲーション制御ユニット１０５、カーナビゲーションシステムである。ナビゲーション制御ユニット１０５は、表示装置に地図を表示し、現在の車両に位置に応じて、目的地までの音声案内等を行う。例えば、ナビゲーション制御ユニット１０５は、乗員へ地図等を表示するために、ダッシュボードに配置されている。 Navigation control unit 105, car navigation system. The navigation control unit 105 displays a map on the display device, and performs voice guidance to the destination according to the position of the current vehicle. For example, the navigation control unit 105 is arranged on a dashboard in order to display a map or the like to an occupant.
　本実施の形態に係る制御ユニット１００は、各種センサの検出に応じてドアロックやウィンドウロックのロック解除を制御する。制御ユニット１００は、１つのドア及びウィンドウのロック解除を制御してもよいし、全てのドア及びウィンドウのロック解除を制御してもよい。例えば、個々のドア及びウィンドウのロック解除を独立して制御する場合、図１のように、複数の制御ユニット１００が車両の各ドアの近傍に配置される。また、全てのドア及びウィンドウのロック解除を一括に制御する場合、１つの制御ユニット１００を任意のドアの近傍に配置してもよいし、車両の中央等に配置してもよい。 The control unit 100 according to the present embodiment controls the unlocking of the door lock and window lock according to the detection of various sensors. The control unit 100 may control the unlocking of one door and window, or may control the unlocking of all doors and windows. For example, when the unlocking of individual doors and windows is controlled independently, a plurality of control units 100 are arranged in the vicinity of each door of the vehicle as shown in FIG. In addition, when controlling the unlocking of all doors and windows collectively, one control unit 100 may be arranged near an arbitrary door, or may be arranged in the center of the vehicle.
　なお、この例では、制御ユニット１００は、ドアロックやパワーウィンドウを制御する既存のドア制御ユニット１０１とは別の制御ユニットとして説明するが、例えば、本実施の形態に係る制御ユニット１００とドア制御ユニット１０１とを一つの制御ユニットとして構成してもよい。 In this example, the control unit 100 is described as a control unit different from the existing door control unit 101 that controls the door lock and the power window. For example, the control unit 100 and the door control according to the present embodiment are described. The unit 101 may be configured as one control unit.
　図２は、本実施の形態に係る制御ユニット１００の構成を示している。図２に示すように、制御ユニット１００は、電源端子１１１と、検出端子１１２と、バックアップ電源部１１３と、電源切り替え部１１４と、ロック解除部１１５とを備えている。 FIG. 2 shows a configuration of the control unit 100 according to the present embodiment. As shown in FIG. 2, the control unit 100 includes a power supply terminal 111, a detection terminal 112, a backup power supply unit 113, a power supply switching unit 114, and a lock release unit 115.
　電源端子１１１は、車両１の主電源であるメイン電源部１２０が接続され、メイン電源部１２０からメイン電源が供給される。検出端子１１２は、車両１に設置されたセンサ１２１が接続され、センサ１２１の検出に応じた検出信号が入力される。 The main power source 120 that is the main power source of the vehicle 1 is connected to the power terminal 111, and the main power source is supplied from the main power source unit 120. A sensor 121 installed in the vehicle 1 is connected to the detection terminal 112, and a detection signal corresponding to the detection of the sensor 121 is input.
　バックアップ電源部１１３は、電源端子１１１に供給されたメイン電源に基づきバックアップ電源を生成する。電源切り替え部１１４は、検出端子１１２に入力された検出信号に基づき電源の供給源をメイン電源からバックアップ電源に切り替える。ロック解除部１１５は、切り替えられたバックアップ電源を動作電源としてドアロックまたはウィンドウロックのロック解除を行う。 The backup power supply unit 113 generates a backup power supply based on the main power supply supplied to the power supply terminal 111. The power supply switching unit 114 switches the power supply source from the main power supply to the backup power supply based on the detection signal input to the detection terminal 112. The unlocking unit 115 unlocks the door lock or window lock using the switched backup power supply as an operation power supply.
　このように、本実施の形態に係る制御ユニットでは、制御ユニット内部にメイン電源に基づきバックアップ電源を生成するバックアップ電源部を備える。そして、センサの検出信号に基づき電源の供給源（電源経路）をメイン電源からバックアンプ電源に切り替え、切り替えたバックアップ電源を動作電源としてロック解除動作を行う。 Thus, the control unit according to the present embodiment includes a backup power supply unit that generates a backup power supply based on the main power supply in the control unit. Then, based on the detection signal of the sensor, the power supply source (power supply path) is switched from the main power supply to the back amplifier power supply, and the unlocked operation is performed using the switched backup power supply as the operation power supply.
　１つの制御ユニットの内部に、バックアップ電源部、電源切り替え部、ロック解除部を備えていることにより、自然災害や事故等が発生し、メイン電源が不安定な状態となった場合でも、バックアップ電源を用いてドアロックやウィンドウロックのロック解除をより早く確実に行うことができる。したがって、自然災害や事故などの非常事態発生時に、電子武装された車内に閉じ込められることなく乗員を安全に脱出させることができる。 By providing a backup power supply unit, power supply switching unit, and lock release unit inside one control unit, even if a natural disaster or accident occurs and the main power supply becomes unstable, the backup power supply The door lock and the window lock can be unlocked more quickly and reliably using. Therefore, in the event of an emergency such as a natural disaster or accident, the passenger can safely escape without being trapped in the electronically armed vehicle.
（実施の形態２）
　以下、図面を参照して実施の形態２について説明する。本実施の形態では、実施の形態１で示した制御ユニットの具体的な構成及び動作について説明する。 (Embodiment 2)
The second embodiment will be described below with reference to the drawings. In this embodiment, a specific configuration and operation of the control unit described in Embodiment 1 will be described.
　図３は、本実施の形態に係る制御ユニットを含む車両制御システム２の構成を示している。車両制御システム２は、実施の形態１の図１と同様に、車両に搭載されて、ドアロック及びウィンドウロックのロック解除を制御する。 FIG. 3 shows a configuration of the vehicle control system 2 including the control unit according to the present embodiment. The vehicle control system 2 is mounted on the vehicle and controls the unlocking of the door lock and the window lock, as in FIG. 1 of the first embodiment.
　図３に示すように、車両制御システム２は、制御ユニット１００、メインバッテリー３０、衝突センサ３１、温度センサ３２、湿度センサ３３、ドアロックアクチュエータ３４、ウィンドウロックアクチュエータ３５を備えている。 As shown in FIG. 3, the vehicle control system 2 includes a control unit 100, a main battery 30, a collision sensor 31, a temperature sensor 32, a humidity sensor 33, a door lock actuator 34, and a window lock actuator 35.
　メインバッテリー３０は、車両に搭載された各部に電源を供給する主電源である。例えば、メインバッテリー３０は、エンジンルームに配置されており、電源電圧は１２Ｖである。 The main battery 30 is a main power source that supplies power to each unit mounted on the vehicle. For example, the main battery 30 is disposed in an engine room, and the power supply voltage is 12V.
　衝突センサ３１、温度センサ３２及び湿度センサ３３は、車両の衝突や、火事、洪水、地震等の自然災害のように緊急の異常を検出するためのセンサである。これらセンサは、ドアロック及びウィンドウロックを解除して乗員を脱出可能にする必要のある異常を検出するセンサの一例であり、振動センサ等、その他のセンサであってもよい。 The collision sensor 31, the temperature sensor 32, and the humidity sensor 33 are sensors for detecting an emergency abnormality such as a vehicle collision or a natural disaster such as a fire, flood, or earthquake. These sensors are an example of a sensor that detects an abnormality that requires the passenger to escape by releasing the door lock and the window lock, and may be another sensor such as a vibration sensor.
　衝突センサ３１は、車両の衝突を検出し、衝突の検出に応じて検出信号を出力するセンサである。例えば、衝突センサ３１は、加速度センサや衝撃センサであり、測定した加速度や衝撃が所定の閾値を超えた場合に、車両が衝突したことを検出し、検出信号（衝突検出信号）を出力する。 The collision sensor 31 is a sensor that detects a vehicle collision and outputs a detection signal in response to the collision detection. For example, the collision sensor 31 is an acceleration sensor or an impact sensor, and detects that the vehicle has collided and outputs a detection signal (collision detection signal) when the measured acceleration or impact exceeds a predetermined threshold.
　衝突センサ３１は、車両の前後左右の衝突を検出するため、ドアやバンパーに配置してもよいし、その他の位置に配置してもよい。衝突センサ３１を車両の複数箇所に配置することで、車両の衝突を精度よく検出することができる。例えば、衝突センサ３１には、エアバック制御用の衝突センサを用いることができる。 The collision sensor 31 may be disposed on a door or bumper to detect a front / rear / right / left collision of the vehicle, or may be disposed at another position. By disposing the collision sensors 31 at a plurality of locations in the vehicle, it is possible to accurately detect a vehicle collision. For example, the collision sensor 31 can be a collision sensor for airbag control.
　温度センサ３２は、車両の温度を検出し、検出した温度に応じて検出信号を出力するセンサである。温度センサ３２は、測定した温度が所定の閾値を超えた場合に、異常な温度であることを検出し、検出信号（温度検出信号）を出力する。 The temperature sensor 32 is a sensor that detects the temperature of the vehicle and outputs a detection signal according to the detected temperature. The temperature sensor 32 detects an abnormal temperature when the measured temperature exceeds a predetermined threshold, and outputs a detection signal (temperature detection signal).
　温度センサ３２は、エンジンの火災や室内の異常な高温を検出するため、エンジンルームや室内に配置してもよいし、その他の位置に配置してもよい。温度センサ３２を車両の複数箇所に配置することで、車両の温度を精度よく検出することができる。例えば、温度センサ３２には、エアコン用の温度センサや、エンジン（ラジエータ）用の温度センサ、燃料やバッテリ用の温度センサを用いることができる。 The temperature sensor 32 may be disposed in the engine room or the room, or may be disposed in another position in order to detect an engine fire or an abnormally high temperature in the room. By arranging the temperature sensors 32 at a plurality of locations in the vehicle, the temperature of the vehicle can be accurately detected. For example, the temperature sensor 32 may be a temperature sensor for an air conditioner, a temperature sensor for an engine (radiator), or a temperature sensor for fuel or a battery.
　湿度センサ３３は、車両の湿度を検出し、検出した湿度に応じて検出信号を出力するセンサである。湿度センサ３３は、測定した湿度が所定の閾値を超えた場合に、異常な湿度であることを検出し、検出信号（湿度検出信号）を出力する。 The humidity sensor 33 is a sensor that detects the humidity of the vehicle and outputs a detection signal according to the detected humidity. When the measured humidity exceeds a predetermined threshold, the humidity sensor 33 detects that the humidity is abnormal and outputs a detection signal (humidity detection signal).
　湿度センサ３３は、車両の水没等を検出するため、エンジンルームや室内に配置してもよいし、その他の位置に配置してもよい。湿度センサ３３を車両の複数箇所に配置することで、車両の湿度を精度よく検出することができる。例えば、湿度センサ３３は、エアコン用の湿度センサや、エンジン（吸気）用の湿度センサを用いることができる。 The humidity sensor 33 may be disposed in the engine room or the room to detect the submergence of the vehicle, or may be disposed at other positions. By disposing the humidity sensors 33 at a plurality of locations in the vehicle, the humidity of the vehicle can be detected with high accuracy. For example, the humidity sensor 33 may be a humidity sensor for an air conditioner or a humidity sensor for an engine (intake air).
　ドアロックアクチュエータ３４は、ドアのロック及びロック解除（アンロック）を行うアクチュエータである。例えば、ドアロックアクチュエータ３４は、モータである。入力される駆動信号に応じてモータがロック方向またはアンロック方向に回転動作することで、ドアをロックまたはロック解除する。 The door lock actuator 34 is an actuator for locking and unlocking (unlocking) the door. For example, the door lock actuator 34 is a motor. The door is locked or unlocked by rotating the motor in the locking or unlocking direction according to the input drive signal.
　ウィンドウロックアクチュエータ３５は、ウィンドウのロック及びロック解除（アンロック）を行うアクチュエータである。例えば、ウィンドウロックアクチュエータ３５は、ドアロックアクチュエータ３４と同様に、モータであり、入力される駆動信号に応じてモータがロック方向またはアンロック方向に回転動作することで、ウィンドウをロックまたはロック解除する。 The window lock actuator 35 is an actuator that locks and unlocks (unlocks) the window. For example, the window lock actuator 35 is a motor, like the door lock actuator 34, and locks or unlocks the window by rotating the motor in the locking direction or unlocking direction according to the input drive signal. .
　制御ユニット１００は、各センサの検出に応じて、ドアロック及びウィンドウロックのロック解除を制御する。制御ユニット１００は、図１及び図２と同様に車両に搭載された制御ユニットであり、車載のマイコン（マイクロコンピュータもしくはマイクロコントローラ）でもある。 The control unit 100 controls the unlocking of the door lock and the window lock according to the detection of each sensor. The control unit 100 is a control unit mounted on a vehicle as in FIGS. 1 and 2, and is also a vehicle-mounted microcomputer (microcomputer or microcontroller).
　図３に示すように、制御ユニット１００は、マイコン搭載用の半導体チップ１０を備えた１パッケージの半導体装置である。図３の例では、制御ユニット１００は、１チップの半導体チップから構成されているが、複数チップの半導体チップから構成されていてもよい。 As shown in FIG. 3, the control unit 100 is a one-package semiconductor device including a semiconductor chip 10 for mounting a microcomputer. In the example of FIG. 3, the control unit 100 is configured by a single chip semiconductor chip, but may be configured by a plurality of chip semiconductor chips.
　制御ユニット１００は、外部装置等と接続するための複数の外部端子２０１ａ～２０１ｇ（いずれかを外部端子２０１とも称する）を備えている。外部端子２０１ａ及び２０１ｂは、電源を供給するための電源端子である。外部端子２０１ａはメインバッテリー３０の正電源端子に接続される。外部端子２０１ｂは接地電位ＧＮＤ（車体ＧＮＤ）に接続される。 The control unit 100 includes a plurality of external terminals 201a to 201g (any of which is also referred to as an external terminal 201) for connection to an external device or the like. The external terminals 201a and 201b are power supply terminals for supplying power. The external terminal 201a is connected to the positive power supply terminal of the main battery 30. The external terminal 201b is connected to the ground potential GND (vehicle body GND).
　外部端子２０１ｃ～２０１ｅは、各センサの検出信号を入力するための入力端子である。外部端子２０１ｃは衝突センサ３１の出力端子に接続され、外部端子２０１ｄは温度センサ３２の出力端子に接続され、外部端子２０１ｅは湿度センサ３３の出力端子に接続される。 External terminals 201c to 201e are input terminals for inputting detection signals of the sensors. The external terminal 201 c is connected to the output terminal of the collision sensor 31, the external terminal 201 d is connected to the output terminal of the temperature sensor 32, and the external terminal 201 e is connected to the output terminal of the humidity sensor 33.
　外部端子２０１ｆ及び２０１ｇは、ドアロック及びウィンドウロックを解除するための駆動信号を出力するための出力端子である。外部端子２０１ｆはドアロックアクチュエータ３４の駆動端子に接続され、外部端子２０１ｇはウィンドウロックアクチュエータ３５の駆動端子に接続される。 External terminals 201f and 201g are output terminals for outputting a drive signal for releasing the door lock and window lock. The external terminal 201 f is connected to the drive terminal of the door lock actuator 34, and the external terminal 201 g is connected to the drive terminal of the window lock actuator 35.
　半導体チップ１０は、レギュレータ１１、電源スイッチ１２、バックアップバッテリー１３、ＣＰＵ（Central Processing Unit）１４、メモリ１５、インタフェース（Ｉ／Ｆ）１６～１８、システム／電源制御部１９、ドアロック制御部２０、ウィンドウロック制御部２１、アイソレータ２２を備えている。例えば、図２のバックアップ電源部１１３は、図３のバックアップバッテリー１３に相当し、図２の電源切り替え部１１４は、図３の電源スイッチ１２、ＣＰＵ１４及びシステム／電源制御部１９に相当し、図２のロック解除部１１５は、図３のドアロック制御部２０及びウィンドウロック制御部２１に相当する。 The semiconductor chip 10 includes a regulator 11, a power switch 12, a backup battery 13, a CPU (Central Processing Unit) 14, a memory 15, interfaces (I / F) 16 to 18, a system / power control unit 19, a door lock control unit 20, A window lock control unit 21 and an isolator 22 are provided. For example, the backup power supply unit 113 in FIG. 2 corresponds to the backup battery 13 in FIG. 3, and the power supply switching unit 114 in FIG. 2 corresponds to the power switch 12, the CPU 14, and the system / power supply control unit 19 in FIG. 2 is equivalent to the door lock control unit 20 and the window lock control unit 21 of FIG.
　レギュレータ１１は、内部回路へ安定電源を供給する安定化電源回路である。レギュレータ１１の入力端子は、外部端子２０１ａに接続されており、外部端子２０１ａを介してメインバッテリー３０のメイン電源Ｖｄｄ０が供給される。レギュレータ１１の出力端子は、電源ドメインＰＤ１に接続されるとともに、電源スイッチ１２の第１の端子に接続される。 The regulator 11 is a stabilized power supply circuit that supplies a stable power supply to the internal circuit. The input terminal of the regulator 11 is connected to the external terminal 201a, and the main power source Vdd0 of the main battery 30 is supplied through the external terminal 201a. The output terminal of the regulator 11 is connected to the power domain PD1 and to the first terminal of the power switch 12.
　レギュレータ１１は、メインバッテリー３０のメイン電源Ｖｄｄ０に基づいて、安定電源（定電圧電源）Ｖｄｄ１を生成する。レギュレータ１１は、メイン電源Ｖｄｄ０（外部電源）を安定電源Ｖｄｄ１（内部電源）に変換する変換回路ともいえる。例えば、メイン電源Ｖｄｄ０は、一般的な車載バッテリと同様に１２Ｖであり、レギュレータ１１の安定電源Ｖｄｄ１は、一般的な内部回路の動作電源と同様に５Ｖである。レギュレータ１１は、安定電源Ｖｄｄ１を電源ドメインＰＤ１へ供給し、また、電源スイッチ１２がオンのとき、安定電源Ｖｄｄ１を電源ドメインＰＤ２及びバックアップバッテリー１３へ供給する。 The regulator 11 generates a stable power supply (constant voltage power supply) Vdd1 based on the main power supply Vdd0 of the main battery 30. The regulator 11 can also be said to be a conversion circuit that converts the main power supply Vdd0 (external power supply) into a stable power supply Vdd1 (internal power supply). For example, the main power supply Vdd0 is 12V as in a general vehicle battery, and the stable power supply Vdd1 of the regulator 11 is 5V as in the operation power supply of a general internal circuit. The regulator 11 supplies the stable power supply Vdd1 to the power supply domain PD1, and also supplies the stable power supply Vdd1 to the power supply domain PD2 and the backup battery 13 when the power switch 12 is on.
　電源スイッチ１２は、電源ドメインＰＤ２への電源経路（供給源）を切り替える切り替え回路である。電源スイッチ１２は、制御端子に入力される切り替え信号に応じて、第１の端子と第２の端子との間のオン／オフ（接続／切断）を切り替える。 The power switch 12 is a switching circuit that switches the power path (supply source) to the power domain PD2. The power switch 12 switches on / off (connection / disconnection) between the first terminal and the second terminal in accordance with a switching signal input to the control terminal.
　電源スイッチ１２は、制御端子がシステム／電源制御部１９に接続され、第１の端子がレギュレータ１１の出力端子に接続され、第２の端子がバックアップバッテリー１３及び電源ドメインＰＤ２に接続される。例えば、電源スイッチ１２は、ＮＭＯＳトランジスタまたはＰＭＯＳトランジスタで構成されている。すなわち、制御端子はゲートであり、第１の端子はドレインまたはソースであり、第２の端子はソースまたはドレインである。 The power switch 12 has a control terminal connected to the system / power control unit 19, a first terminal connected to the output terminal of the regulator 11, and a second terminal connected to the backup battery 13 and the power domain PD2. For example, the power switch 12 is configured by an NMOS transistor or a PMOS transistor. That is, the control terminal is a gate, the first terminal is a drain or source, and the second terminal is a source or drain.
　電源スイッチ１２は、システム／電源制御部１９の制御に応じてオンし、レギュレータ１１とバックアップバッテリー１３及び電源ドメインＰＤ２との間を接続し、また、システム／電源制御部１９の制御に応じてオフし、レギュレータ１１とバックアップバッテリー１３及び電源ドメインＰＤ２との間を切断する。なお、この例では、電源スイッチ１２は、メインバッテリー１１（レギュレータ３０）と電源ドメインＰＤ２との間に設けられているが、バックアップバッテリー１３と電源ドメインＰＤ２との間に設けて、バックアップバッテリー１３と電源ドメインＰＤ２との間の接続をオン／オフしてもよい。 The power switch 12 is turned on according to the control of the system / power control unit 19, connects between the regulator 11, the backup battery 13 and the power domain PD 2, and is turned off according to the control of the system / power control unit 19. Then, the regulator 11, the backup battery 13, and the power domain PD2 are disconnected. In this example, the power switch 12 is provided between the main battery 11 (regulator 30) and the power domain PD2. However, the power switch 12 is provided between the backup battery 13 and the power domain PD2, The connection with the power domain PD2 may be turned on / off.
　バックアップバッテリー１３は、衝突等の異常時にメインバッテリー３０に代わって電源となる予備電源である。バックアップバッテリー１３は、一端が電源スイッチ１２の第２の端子及び電源ドメインＰＤ２に接続され、他端が接地電位ＧＮＤに接続される。 The backup battery 13 is a backup power source that becomes a power source in place of the main battery 30 when an abnormality such as a collision occurs. The backup battery 13 has one end connected to the second terminal of the power switch 12 and the power domain PD2, and the other end connected to the ground potential GND.
　例えば、バックアップバッテリー１３は、大容量キャパシタである。バックアップバッテリー１３をキャパシタにより構成することで、半導体チップ内に簡易にバックアップバッテリーを形成することができる。バックアップバッテリー１３は、電源スイッチ１２がオンのとき、レギュレータ１１の安定電源Ｖｄｄ１により充電される。また、バックアップバッテリー１３は、電源スイッチ１２がオフのとき、バックアップ電源Ｖｄｄ２を電源ドメインＰＤ２へ供給する。安定電源Ｖｄｄ１とバックアップ電源Ｖｄｄ２は同じ電源電圧であり、例えば、５Ｖである。 For example, the backup battery 13 is a large capacity capacitor. By configuring the backup battery 13 with a capacitor, the backup battery can be easily formed in the semiconductor chip. The backup battery 13 is charged by the stable power supply Vdd1 of the regulator 11 when the power switch 12 is on. The backup battery 13 supplies the backup power source Vdd2 to the power domain PD2 when the power switch 12 is off. The stable power supply Vdd1 and the backup power supply Vdd2 are the same power supply voltage, for example, 5V.
　なお、バックアップバッテリー１３は、本実施の形態のように電源供給先の回路（電源ドメインＰＤ２）と同じチップ内に配置されていてもよいし、同一パッケージ内の他のチップに配置されていてもよい。 The backup battery 13 may be arranged in the same chip as the power supply destination circuit (power domain PD2) as in the present embodiment, or may be arranged in another chip in the same package. Good.
　ＣＰＵ１４、メモリ１５、及びインタフェース（Ｉ／Ｆ）１６～１８は、内部バス２３に共通接続されている。また、ＣＰＵ１４、メモリ１５、及びインタフェース１６～１８は、電源ドメインＰＤ１に属し、電源ドメインＰＤ１の電源ライン（不図示）から共通に電源が供給される。 The CPU 14, the memory 15, and the interfaces (I / F) 16 to 18 are commonly connected to the internal bus 23. The CPU 14, the memory 15, and the interfaces 16 to 18 belong to the power domain PD1 and are commonly supplied with power from a power line (not shown) of the power domain PD1.
　ＣＰＵ１４は、制御ユニット（マイコン）の動作を制御する制御部である。メモリ１５は、ＣＰＵ１４の動作に必要な制御プログラムや各種データを記憶する。この制御プログラムは、図５等で後述する本実施の形態に係る制御方法の各ステップが記述されたプログラムである。ＣＰＵ１４は、メモリ１５に記憶された制御プログラムを実行することで制御ユニットの動作を制御し、本実施の形態に係る制御方法を実現する。具体的には、ＣＰＵ１４は、割り込みハンドラによりインタフェース１６～１８からの割り込み信号（アサート）を受け付けると、割り込み処理を実行し、システム／電源制御部１９へロック解除を指示する。 The CPU 14 is a control unit that controls the operation of the control unit (microcomputer). The memory 15 stores a control program and various data necessary for the operation of the CPU 14. This control program is a program in which each step of the control method according to the present embodiment, which will be described later with reference to FIG. CPU14 controls the operation | movement of a control unit by running the control program memorize | stored in the memory 15, and implement | achieves the control method which concerns on this Embodiment. Specifically, when the CPU 14 receives an interrupt signal (asserted) from the interfaces 16 to 18 by the interrupt handler, the CPU 14 executes interrupt processing and instructs the system / power supply control unit 19 to release the lock.
　インタフェース（Ｉ／Ｆ）１６～１８は、各センサの検出信号を割り込み信号（内部制御信号）へ変換する。インタフェース１６～１８は、各センサが検出信号を出力すると割り込み信号を生成し、ＣＰＵ１４に割り込み処理を実行させる。 Interfaces (I / F) 16 to 18 convert detection signals of the sensors into interrupt signals (internal control signals). The interfaces 16 to 18 generate an interrupt signal when each sensor outputs a detection signal, and cause the CPU 14 to execute an interrupt process.
　インタフェース１６の入力端子は、外部端子２０１ｃに接続されており、外部端子２０１ｃを介して衝突センサ３１の検出信号が入力される。インタフェース１６の出力端子は、内部バス２３に接続されており、内部バス２３を介して衝突センサ３１の検出信号に応じた割り込み信号（衝突割り込み信号）をＣＰＵ１４へ出力する。衝突センサ３１の検出に応じてＣＰＵ１４に対し割り込みを発生させることで、衝突時に迅速にロック解除を行うことができる。 The input terminal of the interface 16 is connected to the external terminal 201c, and the detection signal of the collision sensor 31 is input through the external terminal 201c. The output terminal of the interface 16 is connected to the internal bus 23, and outputs an interrupt signal (collision interrupt signal) corresponding to the detection signal of the collision sensor 31 to the CPU 14 via the internal bus 23. By generating an interrupt to the CPU 14 in response to the detection of the collision sensor 31, the lock can be quickly released in the event of a collision.
　インタフェース１７の入力端子は、外部端子２０１ｄに接続されており、外部端子２０１ｄを介して温度センサ３２の検出信号が入力される。インタフェース１７の出力端子は、内部バス２３に接続されており、内部バス２３を介して温度センサ３２の検出信号に応じた割り込み信号（温度割り込み信号）をＣＰＵ１４へ出力する。温度センサ３２の検出に応じてＣＰＵ１４に対し割り込みを発生させることで、火災等の発生時に迅速にロック解除を行うことができる。 The input terminal of the interface 17 is connected to the external terminal 201d, and the detection signal of the temperature sensor 32 is input through the external terminal 201d. The output terminal of the interface 17 is connected to the internal bus 23, and outputs an interrupt signal (temperature interrupt signal) corresponding to the detection signal of the temperature sensor 32 to the CPU 14 via the internal bus 23. By generating an interrupt to the CPU 14 in response to detection by the temperature sensor 32, the lock can be quickly released when a fire or the like occurs.
　インタフェース１８の入力端子は、外部端子２０１ｅに接続されており、外部端子２０１ｅを介して湿度センサ３３の検出信号が入力される。インタフェース１８の出力端子は、内部バス２３に接続されており、内部バス２３を介して湿度センサ３３の検出信号に応じた割り込み信号（湿度割り込み信号）をＣＰＵ１４へ出力する。湿度センサ３３の検出に応じてＣＰＵ１４に対し割り込みを発生させることで、水没等の発生時に迅速にロック解除を行うことができる。 The input terminal of the interface 18 is connected to the external terminal 201e, and the detection signal of the humidity sensor 33 is input through the external terminal 201e. The output terminal of the interface 18 is connected to the internal bus 23, and outputs an interrupt signal (humidity interrupt signal) corresponding to the detection signal of the humidity sensor 33 to the CPU 14 via the internal bus 23. By generating an interrupt to the CPU 14 according to the detection of the humidity sensor 33, the lock can be quickly released when submergence occurs.
　システム／電源制御部１９、ドアロック制御部２０及びウィンドウロック制御部２１は、内部バス２４に共通接続されている。また、システム／電源制御部１９、ドアロック制御部２０、ウィンドウロック制御部２１及びアイソレータ２２は、電源ドメインＰＤ２に属し、電源ドメインＰＤ２の電源ライン（不図示）から共通に電源が供給される。 The system / power control unit 19, the door lock control unit 20, and the window lock control unit 21 are commonly connected to the internal bus 24. The system / power control unit 19, the door lock control unit 20, the window lock control unit 21, and the isolator 22 belong to the power domain PD2 and are commonly supplied with power from a power line (not shown) of the power domain PD2.
　システム／電源制御部１９は、制御ユニット１００の動作電源を制御する。特に、システム／電源制御部１９は、電源ドメインＰＤ２への電源経路を制御するとともに、ドアロック及びウィンドウロックのロック解除を制御する。 The system / power control unit 19 controls the operating power of the control unit 100. In particular, the system / power supply control unit 19 controls the power supply path to the power supply domain PD2, and also controls the unlocking of the door lock and the window lock.
　システム／電源制御部１９は、ＣＰＵ１４からロック解除の指示を受けると、電源スイッチ１２を制御して電源経路を切り替え、さらに、ドアロック制御部２０及びウィンドウロック制御部２１へロック解除命令を出力してドアロック及びウィンドウロックを解除する。 Upon receiving an unlocking instruction from the CPU 14, the system / power control unit 19 controls the power switch 12 to switch the power path, and further outputs an unlock command to the door lock control unit 20 and the window lock control unit 21. Release the door lock and window lock.
　ドアロック制御部２０は、システム／電源制御部１９からロック解除命令を受けると、ドアロックアクチュエータ３４へロック解除するための駆動信号を出力する。ドアロック制御部２０の入力端子は、内部バス２４に接続されており、内部バス２４を介してシステム／電源制御部１９からロック解除命令が通知される。ドアロック制御部２０の出力端子は、外部端子２０１ｆに接続されており、外部端子２０１ｆを介してドアロックアクチュエータ３４へロック解除するための駆動信号を出力する。 The door lock control unit 20 outputs a drive signal for unlocking to the door lock actuator 34 when receiving the unlock command from the system / power control unit 19. An input terminal of the door lock control unit 20 is connected to the internal bus 24, and a lock release command is notified from the system / power control unit 19 via the internal bus 24. The output terminal of the door lock control unit 20 is connected to the external terminal 201f, and outputs a drive signal for unlocking to the door lock actuator 34 via the external terminal 201f.
　ウィンドウロック制御部２１は、システム／電源制御部１９からロック解除命令を受けると、ウィンドウロックアクチュエータ３５へロック解除するための駆動信号を出力する。ウィンドウロック制御部２１の入力端子は、内部バス２４に接続されており、内部バス２４を介してシステム／電源制御部１９からロック解除命令が通知される。ウィンドウロック制御部２１の出力端子は、外部端子２０１ｇに接続されており、外部端子２０１ｇ介してウィンドウロックアクチュエータ３５へロック解除するための駆動信号を出力する。 The window lock control unit 21 outputs a drive signal for unlocking to the window lock actuator 35 upon receiving an unlock command from the system / power control unit 19. An input terminal of the window lock control unit 21 is connected to the internal bus 24, and a lock release command is notified from the system / power control unit 19 via the internal bus 24. The output terminal of the window lock control unit 21 is connected to the external terminal 201g, and outputs a drive signal for unlocking to the window lock actuator 35 via the external terminal 201g.
　半導体チップ１０内の電源ドメインは、レギュレータ１１から直接電源供給される電源ドメインＰＤ１と、電源スイッチ１２を介して電源供給される電源ドメインＰＤ２とに分離されている。電源ドメインＰＤ２にはシステム／電源制御部１９、ドアロック制御部２０及びウィンドウロック制御部２１を含むロック解除に必要な回路のみ備えており、緊急時に必要となる電源を抑えることができるため、より早く確実にロック解除できるとともに、バックアップバッテリー１３の回路規模を抑えることが可能である。 The power domain in the semiconductor chip 10 is separated into a power domain PD1 that is directly supplied with power from the regulator 11 and a power domain PD2 that is supplied with power via the power switch 12. Since the power domain PD2 includes only the circuits necessary for unlocking including the system / power control unit 19, the door lock control unit 20, and the window lock control unit 21, the power required in an emergency can be suppressed. The lock can be released quickly and reliably, and the circuit scale of the backup battery 13 can be reduced.
　アイソレータ２２は、電源ドメインＰＤ１と電源ドメインＰＤ２との間を電気的に分離し、信号の伝達を遮断する。すなわち、アイソレータ２２は、メインバッテリー３０が不安定となり電源ドメインＰＤ１への電源供給が遮断された場合に、電源ドメインＰＤ１の信号による電源ドメインＰＤ２への悪影響を防止する。 The isolator 22 electrically isolates the power supply domain PD1 and the power supply domain PD2 and interrupts signal transmission. That is, the isolator 22 prevents an adverse effect on the power domain PD2 due to the signal of the power domain PD1 when the main battery 30 becomes unstable and the power supply to the power domain PD1 is cut off.
　アイソレータ２２は、ＣＰＵ１４とシステム／電源制御部１９との間に接続されている。例えば、システム／電源制御部１９からの制御に応じて、ＣＰＵ１４からシステム／電源制御部１９への信号を遮断する。アイソレータ２２は絶縁回路であり、論理に応じて、例えば、ＡＮＤゲートやＯＲゲートが用いられる。 The isolator 22 is connected between the CPU 14 and the system / power supply control unit 19. For example, a signal from the CPU 14 to the system / power supply control unit 19 is blocked in accordance with control from the system / power supply control unit 19. The isolator 22 is an insulating circuit, and for example, an AND gate or an OR gate is used according to the logic.
　例えば、制御ユニット１００は、車内に配置されており、エンジンルーム内のメインバッテリー３０より外圧に影響されにくい。また、各種センサと制御ユニットのパッケージ間の配線は、防水性や耐熱性に富んだ配線シールドテープで保護されている。 For example, the control unit 100 is disposed in the vehicle and is less susceptible to external pressure than the main battery 30 in the engine room. In addition, the wiring between the various sensors and the control unit package is protected by a wiring shield tape that is highly waterproof and heat resistant.
　また、制御ユニット１００のパッケージは、耐熱性及び防水性を備えた耐熱／防水パッケージであることが好ましい。図４は、制御ユニット１００の断面模式図であり、制御ユニット１００を耐熱／防水パッケージにより構成した例を示している。 Also, the package of the control unit 100 is preferably a heat / waterproof package having heat resistance and waterproofness. FIG. 4 is a schematic sectional view of the control unit 100 and shows an example in which the control unit 100 is configured by a heat resistant / waterproof package.
　図４に示すように、制御ユニット１００は、半導体チップ１０の基板１０ａに、バックアップバッテリー１３やシステム／電源制御部１９、ドアロック制御部２０等、図３で示した各回路が実装されている。基板１０ａに実装された各回路は、樹脂１０ｂにより封止されている。樹脂１０ｂは、防水性及び耐熱性を有するパッケージ樹脂である。例えば、樹脂１０ｂは、エポキシ樹脂やフェノール樹脂等である。内部回路を防水性及び耐熱性の樹脂により封止することで、事故や災害の発生時でも外部の影響を受けずに内部回路が動作できるため、確実にロック解除を行うことができる。 As shown in FIG. 4, in the control unit 100, each circuit shown in FIG. 3, such as the backup battery 13, the system / power supply control unit 19, the door lock control unit 20, and the like is mounted on the substrate 10a of the semiconductor chip 10. . Each circuit mounted on the substrate 10a is sealed with a resin 10b. The resin 10b is a package resin having waterproofness and heat resistance. For example, the resin 10b is an epoxy resin or a phenol resin. By sealing the internal circuit with a waterproof and heat-resistant resin, the internal circuit can operate without being affected by the outside even in the event of an accident or disaster, so that the lock can be reliably released.
　基板１０ａには、複数の外部端子２０１（２０１ａ～２０１ｇ）が接続されている。外部端子２０１は、防水／耐熱コネクタ２０２に固定されている。防水／耐熱コネクタ２０２にケーブル２１０が接続され、ケーブル２１０を介して制御ユニット１００とセンサ３１～３３とを電気的に接続する。例えば、防水／耐熱コネクタ２０２は、ＰＢＴ樹脂（ポリブチレンテレフタレート）で形成されており、また、外部端子２０１は、防水／耐熱処理が施されている。 A plurality of external terminals 201 (201a to 201g) are connected to the substrate 10a. The external terminal 201 is fixed to the waterproof / heat resistant connector 202. A cable 210 is connected to the waterproof / heat-resistant connector 202, and the control unit 100 and the sensors 31 to 33 are electrically connected via the cable 210. For example, the waterproof / heat-resistant connector 202 is formed of PBT resin (polybutylene terephthalate), and the external terminal 201 is subjected to waterproof / heat-resistant treatment.
　ケーブル２１０は、表面が防水／耐熱チューブ（シールド）２１１で覆われており、ケーブル２１０の先端に防水／耐熱コネクタ２１２を備えている。例えば、防水／耐熱チューブ２１１は、シリコンやフッ素ポリマーで形成されている。例えば、制御ユニット１００の防水／耐熱コネクタ２０２はメス型コネクタであり、ケーブル２１０の防水／耐熱コネクタ２１２はオス型コネクタであり、防水／耐熱コネクタ２０２に防水／耐熱コネクタ２１２を挿入して嵌合することで、制御ユニット１００の外部端子２０１の部分を防水／耐熱構造とする。防水性及び耐熱性を有するコネクタを備えることで、外部端子の実装部分からの浸水等を低減できるため、事故や災害の発生時でも外部の影響を受けずに確実にロック解除を行うことができる。ケーブル２１０を防水性及び耐熱性を有するチューブで覆っているため、事故や災害の発生時でもセンサの信号を安定して伝達できるため、確実にロック解除を行うことができる。 The surface of the cable 210 is covered with a waterproof / heat-resistant tube (shield) 211, and a waterproof / heat-resistant connector 212 is provided at the tip of the cable 210. For example, the waterproof / heat resistant tube 211 is made of silicon or a fluoropolymer. For example, the waterproof / heat resistant connector 202 of the control unit 100 is a female connector, the waterproof / heat resistant connector 212 of the cable 210 is a male connector, and the waterproof / heat resistant connector 212 is inserted into the waterproof / heat resistant connector 202 and fitted. By doing so, the portion of the external terminal 201 of the control unit 100 has a waterproof / heat-resistant structure. By providing a connector with waterproof and heat resistance, it is possible to reduce the inundation from the mounting part of the external terminal, so that it can be unlocked reliably without being affected by the outside even in the event of an accident or disaster . Since the cable 210 is covered with a waterproof and heat-resistant tube, the sensor signal can be stably transmitted even in the event of an accident or disaster, so that the lock can be reliably released.
　次に、図５～図７を用いて、本実施の形態に係る制御ユニットの制御方法について説明する。車両事故や自然災害発生時、図５に示したフローチャートにしたがって処理が行われる。ここでは、事故が発生して衝突センサ３１が衝突を検出した場合の動作例について説明する。なお、温度センサ３２及び湿度センサ３３が温度及び湿度を検出した場合も同様である。 Next, the control method of the control unit according to the present embodiment will be described with reference to FIGS. When a vehicle accident or natural disaster occurs, processing is performed according to the flowchart shown in FIG. Here, an operation example when an accident occurs and the collision sensor 31 detects a collision will be described. The same applies when the temperature sensor 32 and the humidity sensor 33 detect temperature and humidity.
　まず、車両事故等の外部要因の発生前、制御ユニット１００は、通常動作を行っている（Ｓ１００）。通常動作時は、図６に示すように、システム／電源制御部１９は、電源スイッチ１２をオンに制御する。そうすると、メインバッテリー３０からレギュレータ１１および電源スイッチ１２を介して安定電源Ｖｄｄ１が電源ドメインＰＤ２内に供給され、その際バックアップバッテリー１３への充電も開始する。 First, before the occurrence of an external factor such as a vehicle accident, the control unit 100 performs a normal operation (S100). During normal operation, the system / power control unit 19 controls the power switch 12 to be on as shown in FIG. Then, the stable power supply Vdd1 is supplied from the main battery 30 through the regulator 11 and the power switch 12 into the power domain PD2, and charging of the backup battery 13 is also started at that time.
　続いて、外部要因が発生しセンサが作動する（Ｓ１０１）。例えば、車両の衝突事故が発生すると、衝突センサ３１が作動して衝突を検出し、衝突センサ３１からインタフェース１６へ検出信号が出力される。 Subsequently, an external factor is generated and the sensor is activated (S101). For example, when a vehicle collision accident occurs, the collision sensor 31 operates to detect a collision, and a detection signal is output from the collision sensor 31 to the interface 16.
　続いて、センサの検出に応じてＣＰＵ１４へ割り込みが発生する（Ｓ１０２）。インタフェース１６は、衝突センサ３１から検出信号が入力されたため、割り込み信号を生成しＣＰＵ１４へ出力し、ＣＰＵ１４が割り込み処理を実行する。 Subsequently, an interrupt occurs to the CPU 14 in response to the detection of the sensor (S102). Since the detection signal is input from the collision sensor 31, the interface 16 generates an interrupt signal and outputs the interrupt signal to the CPU 14, and the CPU 14 executes an interrupt process.
　続いて、ＣＰＵ１４はシステム／電源制御部１９へロック解除を指示する（Ｓ１０３）。ＣＰＵ１４は、インタフェース１６から衝突検出による割り込み信号を受け付けたため、システム／電源制御部１９へロック解除を指示する。 Subsequently, the CPU 14 instructs the system / power control unit 19 to release the lock (S103). Since the CPU 14 has received an interrupt signal due to collision detection from the interface 16, the CPU 14 instructs the system / power control unit 19 to release the lock.
　続いて、電源スイッチ１２は電源経路を切り替える（Ｓ１０４）。システム／電源制御部１９は、ＣＰＵ１４からロック解除の指示を受け付けたため、図７に示すように、電源スイッチ１２をオフに制御する。 Subsequently, the power switch 12 switches the power path (S104). Since the system / power control unit 19 has received the unlocking instruction from the CPU 14, the system / power control unit 19 controls the power switch 12 to be off as shown in FIG. 7.
　そうすると、電源スイッチ１２は、メインバッテリー３０及びレギュレータ１１とバックアップバッテリー１３及び電源ドメインＰＤ２との間を切断し、メインバッテリー３０から電源ドメインＰＤ２への電源供給を遮断する。このため、バックアップバッテリー１３から電源供給するように電源経路が切り替わる。バックアップバッテリー１３は蓄電した電荷を放電することで一定期間、電源ドメインＰＤ２へ電圧を供給する。 Then, the power switch 12 disconnects the main battery 30 and the regulator 11 from the backup battery 13 and the power domain PD2, and cuts off the power supply from the main battery 30 to the power domain PD2. For this reason, the power supply path is switched to supply power from the backup battery 13. The backup battery 13 supplies a voltage to the power domain PD2 for a certain period by discharging the stored charge.
　その際、アイソレータ２２は、遮断された電源ドメインＰＤ１に配置されたＣＰＵ１４から、システム／電源制御部１９へ遮断信号が回り込むことのないように、電源ドメインＰＤ１と電源ドメインＰＤ２とを分離する。 At that time, the isolator 22 separates the power supply domain PD1 and the power supply domain PD2 so that the shutoff signal does not circulate to the system / power supply control unit 19 from the CPU 14 disposed in the shutoff power supply domain PD1.
　続いて、ドアロック制御部２０及びウィンドウロック制御部２１は、ドアロック及びウィンドウロックを解除する（Ｓ１０５）。システム／電源制御部１９は、電源経路が切り替わったことを確認後、ドアロック制御部２０およびウィンドウロック制御部２１へロック解除命令を出力する。 Subsequently, the door lock control unit 20 and the window lock control unit 21 release the door lock and the window lock (S105). The system / power supply control unit 19 outputs a lock release command to the door lock control unit 20 and the window lock control unit 21 after confirming that the power supply path has been switched.
　そうすると、ドアロック制御部２０はドアロックアクチュエータ３４へ駆動信号を出力してドアロックを解除する。また、ウィンドウロック制御部２１はウィンドウロックアクチュエータ３５へ駆動信号を出力してウィンドウロックを解除する。これにより、ドアロック及びウィンドウロックが解除され、ドア及びウィンドウを自由に開けることができるようになる。 Then, the door lock control unit 20 outputs a drive signal to the door lock actuator 34 to release the door lock. Further, the window lock control unit 21 outputs a drive signal to the window lock actuator 35 to release the window lock. Thereby, the door lock and the window lock are released, and the door and the window can be freely opened.
　このように、本実施の形態では、事故や自然災害発生時には、各種センサからチップ内インタフェースを介してＣＰＵに割り込みが入り、ＣＰＵからシステム／電源制御に命令が伝わることで、メインバッテリーからバックアップバッテリーに電力供給経路が切り替わる。したがって、突然メインバッテリーからの電源供給が遮断されたとしても、システム／電源制御ブロックおよびドアロック解除、ウィンドウロック解除処理はバックアップバッテリーにより動作し続けることができる。特に、１パッケージ内の１チップ内にバックアップバッテリー等を含むロック解除に必要な回路を全て搭載しているため、信号劣化や外部環境からの影響を受けることなく、より早く確実にロック解除を行うことができる。 As described above, in the present embodiment, when an accident or natural disaster occurs, an interrupt is input from the various sensors to the CPU via the in-chip interface, and a command is transmitted from the CPU to the system / power supply control. The power supply path is switched. Therefore, even if the power supply from the main battery is suddenly cut off, the system / power control block, door lock release, and window lock release processing can continue to operate with the backup battery. In particular, since all the circuits necessary for unlocking, including a backup battery, etc., are mounted on one chip in one package, unlocking can be performed quickly and reliably without being affected by signal degradation or the external environment. be able to.
　緊急時に電源経路を外付けのメインバッテリーからバックアップバッテリーに切り替え、ドアロック及びウィンドウロックを解除することができるため、非常事態発生時、車内に閉じ込められることなく、車外への脱出が可能となる。 In the event of an emergency, the power path can be switched from the external main battery to the backup battery, and the door lock and window lock can be released, so that in the event of an emergency, it is possible to escape outside the vehicle without being trapped inside the vehicle.
（実施の形態３）
　以下、図面を参照して実施の形態３について説明する。本実施の形態で、実施の形態２の制御ユニットに対し、犯罪防止のためエンジンキーの検知に応じた制御動作を行う例である。 (Embodiment 3)
The third embodiment will be described below with reference to the drawings. In this embodiment, the control unit according to the second embodiment is an example in which a control operation corresponding to detection of an engine key is performed for crime prevention.
　図８は、本実施の形態に係る制御ユニットを含む車両制御システム２の構成を示している。図８では、実施の形態２の図３の構成に加えて、制御ユニット１００にキーセンサ３６が接続されている。その他の構成は図３と同様である。 FIG. 8 shows a configuration of the vehicle control system 2 including the control unit according to the present embodiment. In FIG. 8, in addition to the configuration of FIG. 3 of the second embodiment, a key sensor 36 is connected to the control unit 100. Other configurations are the same as those in FIG.
　キーセンサ３６は、キーシリンダにキー（イグニッションキー）が挿入されているか否かを検出し、キーの挿入状態を出力するセンサである。例えば、キーセンサ３６は、キーシリンダにキーが挿入されている場合、挿入状態を示す検出信号を出力し、キーシリンダにキーが挿入されていない場合、非挿入状態を示す検出信号を出力する。なお、キーセンサ３６は、キーシリンダにキーが挿入されたタイミングで挿入を示す検出信号を出力し、キーシリンダからキーが抜き出されたタイミングで非挿入を示す検出信号を出力してもよい。また、車両がキーレスシステムの場合、キーの挿入／非挿入の代わりに、イグニッションスイッチのオン／オフを検出してもよい。 The key sensor 36 is a sensor that detects whether or not a key (ignition key) is inserted into the key cylinder, and outputs a key insertion state. For example, the key sensor 36 outputs a detection signal indicating an insertion state when a key is inserted into the key cylinder, and outputs a detection signal indicating a non-insertion state when a key is not inserted into the key cylinder. The key sensor 36 may output a detection signal indicating insertion when the key is inserted into the key cylinder, and may output a detection signal indicating non-insertion when the key is extracted from the key cylinder. When the vehicle is a keyless system, on / off of the ignition switch may be detected instead of inserting / not inserting the key.
　制御ユニット１００は、外部端子２０１ａ～２０１ｇに加えて、外部端子２０１ｈを備えている。外部端子２０１ｈは、キーセンサ３６の出力端子に接続され、キーセンサ３６の検出信号を入力するための入力端子である。 The control unit 100 includes an external terminal 201h in addition to the external terminals 201a to 201g. The external terminal 201 h is connected to the output terminal of the key sensor 36 and is an input terminal for inputting a detection signal of the key sensor 36.
　半導体チップ１０は、インタフェース１６～１８に加えて、インタフェース２５を備えている。インタフェース２５の入力端子は、外部端子２０１ｈに接続されており、外部端子２０１ｈを介してキーセンサ３６の検出信号が入力される。インタフェース２５の出力端子は内部バス２３に接続されており、内部バス２３を介してキーセンサ３６の検出信号をＣＰＵ１４へ出力する。インタフェース２５は、ＣＰＵ１４からの問い合わせに応じてキーセンサ３６のキー挿入状態を示す検出信号を出力してもよいし、キーセンサ３６の検出信号に応じた割り込み信号をＣＰＵ１４へ出力してもよい。 The semiconductor chip 10 includes an interface 25 in addition to the interfaces 16-18. The input terminal of the interface 25 is connected to the external terminal 201h, and the detection signal of the key sensor 36 is input through the external terminal 201h. An output terminal of the interface 25 is connected to the internal bus 23, and outputs a detection signal of the key sensor 36 to the CPU 14 via the internal bus 23. The interface 25 may output a detection signal indicating the key insertion state of the key sensor 36 in response to an inquiry from the CPU 14, or may output an interrupt signal corresponding to the detection signal of the key sensor 36 to the CPU 14.
　図９は、本実施の形態に係る制御ユニットの制御方法を示している。図９は、実施の形態２の図５と比べて、Ｓ１０６の判定処理が追加されている。その他の処理は図５と同様である。 FIG. 9 shows a control method of the control unit according to the present embodiment. In FIG. 9, the determination process of S <b> 106 is added compared to FIG. 5 of the second embodiment. Other processes are the same as those in FIG.
　まず、外部要因の発生前、制御ユニット１００は、通常動作を行っている（Ｓ１００）。その後、外部要因が発生しセンサ３１～３２のいずれかが作動し（Ｓ１０１）、センサ３１～３２の検出に応じてＣＰＵ１４へ割り込みが発生する（Ｓ１０２）。 First, before the occurrence of an external factor, the control unit 100 performs a normal operation (S100). Thereafter, an external factor is generated, and any of the sensors 31 to 32 is activated (S101), and an interrupt is generated to the CPU 14 in response to the detection of the sensors 31 to 32 (S102).
　続いて、本実施の形態では、ＣＰＵ１４はエンジンが作動しているか否か、また、エンジンキーが挿入されているか否か判定する（Ｓ１０６）。例えば、ＣＰＵ１４は、インタフェース１６へ問い合わせ、キーセンサ３６の検出信号を取得することでキーの挿入状態を判定する。また、例えば、制御ユニット１００は、エンジン制御用のエンジン制御ユニットと接続されており、エンジン制御ユニットからエンジンの作動状態を受け取り、エンジンが作動しているかどうか判定する。 Subsequently, in the present embodiment, the CPU 14 determines whether the engine is operating and whether an engine key is inserted (S106). For example, the CPU 14 makes an inquiry to the interface 16 and obtains a detection signal from the key sensor 36 to determine the key insertion state. In addition, for example, the control unit 100 is connected to an engine control unit for engine control, receives an operating state of the engine from the engine control unit, and determines whether the engine is operating.
　Ｓ１０６において、エンジンが非作動（停止状態）であり、かつ、エンジンキーが非挿入の場合、電源経路の切り替え及びロック解除は行わず、通常動作（Ｓ１００）を続ける。エンジンが停止中で、かつ、エンジンキーが挿入されていない場合には、車両が未使用の状態であるため、ロック解除を行うと外部から自由にドアを開けることが可能になり防犯上好ましくない。そのため、本実施の形態では、この場合、ロック解除を実施せずロック状態のままとすることで、犯罪目的の侵入を防止する。 In S106, when the engine is inactive (stopped) and the engine key is not inserted, the power supply path is not switched and the lock is not released, and the normal operation (S100) is continued. When the engine is stopped and the engine key is not inserted, the vehicle is in an unused state, so unlocking the door will allow the door to be opened freely from the outside, which is undesirable for crime prevention. . For this reason, in this embodiment, in this case, the lock is not released and the locked state is kept, thereby preventing the intrusion for the purpose of crime.
　Ｓ１０６において、エンジンが作動しているか、または、エンジンキーが挿入されている場合、図５と同様に、ＣＰＵ１４はシステム／電源制御部へロック解除を指示し（Ｓ１０３）、電源経路を切り替え（Ｓ１０４）、ドアロック及びウィンドウロックを解除する（Ｓ１０５）。エンジンが作動中の場合や、エンジンキーが挿入されている場合には、車両が使用中の状態であり、事故等によりロック解除の必要があるため、実施の形態２と同様にロック解除を行う。 In S106, when the engine is operating or the engine key is inserted, the CPU 14 instructs the system / power control unit to release the lock (S103) and switches the power supply path (S104) as in FIG. ), The door lock and the window lock are released (S105). When the engine is in operation or when the engine key is inserted, the vehicle is in use and the lock needs to be released due to an accident or the like. Therefore, the lock is released as in the second embodiment. .
　このように、本実施の形態では、キーセンサによりエンジンキーの挿入状態に応じて、また、エンジンの作動状態に応じて、ロック解除の実施を判断するようにした。これにより、必要な場合のみロック解除を行うこととなり、犯罪目的の外圧でロックが解除されることを回避できるため、犯罪を防止することができる。 As described above, in this embodiment, the key sensor determines whether to release the lock according to the insertion state of the engine key and the operation state of the engine. As a result, unlocking is performed only when necessary, and it is possible to avoid unlocking with an external pressure for crime purposes, thereby preventing crime.
（実施の形態４）
　以下、図面を参照して実施の形態４について説明する。本実施の形態は、実施の形態２の制御ユニットに対して、バックアップバッテリーを別チップとする例である。 (Embodiment 4)
The fourth embodiment will be described below with reference to the drawings. The present embodiment is an example in which the backup battery is a separate chip with respect to the control unit of the second embodiment.
　図１０は、本実施の形態に係る制御ユニットを含む車両制御システム２の構成を示している。実施の形態２の図３では制御ユニット１００が１つの半導体チップ１０を備えているのに対し、図１０の制御ユニット１００は、マイコン搭載用の半導体チップ４１と、バックアップバッテリー搭載用の半導体チップ４２とを備えている。チップ構成以外については、図３と同様である。 FIG. 10 shows a configuration of the vehicle control system 2 including the control unit according to the present embodiment. In FIG. 3 of the second embodiment, the control unit 100 includes one semiconductor chip 10, whereas the control unit 100 in FIG. 10 includes a semiconductor chip 41 for mounting a microcomputer and a semiconductor chip 42 for mounting a backup battery. And. Except for the chip configuration, it is the same as FIG.
　半導体チップ４２は、図３の構成のうち、バックアップバッテリー１３を備えている。半導体チップ４１は、図３の構成のうち、バックアップバッテリー１３以外の構成を備えている。半導体チップ４１と半導体チップ４２とは、電源インタフェースピン４３を介して接続されている。 The semiconductor chip 42 includes the backup battery 13 in the configuration of FIG. The semiconductor chip 41 has a configuration other than the backup battery 13 in the configuration of FIG. The semiconductor chip 41 and the semiconductor chip 42 are connected via a power interface pin 43.
　通常動作時には、システム／電源制御部１９により電源スイッチ１２はオンされ、レギュレータ１１からの電源Ｖｄｄ１が電源ドメインＰＤ１および電源ドメインＰＤ２へ供給される。その際、電源インタフェースピン４３を介してレギュレータ１１からバックアップバッテリー１３へ電荷がチャージされる。 During normal operation, the power switch 12 is turned on by the system / power control unit 19, and the power Vdd1 from the regulator 11 is supplied to the power domain PD1 and the power domain PD2. At that time, electric charge is charged from the regulator 11 to the backup battery 13 via the power interface pin 43.
　各種センサが異常を検知すると、ＣＰＵ１４への割り込みを介してシステム／電源制御部１９が電源スイッチ１２をオフすることで、電源ドメインＰＤ２への電源供給経路がレギュレータ１１からバックアップバッテリー１３へ切り替えられる。そうすると、バックアップバッテリー１３にチャージされた電荷が電源インタフェースピン４３を経由して電源ドメインＰＤ２へ供給される。バックアップバッテリー１３が正常に供給された後、システム／電源制御部１９の指示により、ドアロック制御部２０及びウィンドウロック制御部２１がドアロックとウィンドウロックを解除する。 When the various sensors detect an abnormality, the system / power control unit 19 turns off the power switch 12 via an interrupt to the CPU 14, whereby the power supply path to the power domain PD2 is switched from the regulator 11 to the backup battery 13. Then, the electric charge charged in the backup battery 13 is supplied to the power domain PD2 via the power interface pin 43. After the backup battery 13 is normally supplied, the door lock control unit 20 and the window lock control unit 21 release the door lock and the window lock according to an instruction from the system / power control unit 19.
　このように、実施の形態２に対し、バックアップバッテリーを別チップとした場合でも、実施の形態２と同様の効果が得られる。すなわち、事故等の緊急時にバックアップバッテリーに切り替え、より早く確実にドアロック及びウィンドウロックを解除することができる。また、バックアップバッテリー用の半導体チップを備えることで、より大容量のバックアップバッテリーを備えることが可能となるため、ロック解除に必要な回路を早く確実に動作させることができる。 Thus, the same effect as in the second embodiment can be obtained even when the backup battery is a separate chip with respect to the second embodiment. That is, it is possible to switch to the backup battery in an emergency such as an accident and to release the door lock and the window lock more quickly and reliably. In addition, since a backup battery having a larger capacity can be provided by providing the semiconductor chip for the backup battery, a circuit necessary for unlocking can be operated quickly and reliably.
（実施の形態５）
　以下、図面を参照して実施の形態５について説明する。本実施の形態は、実施の形態２の制御ユニットに対して、システム／電源制御部およびバックアップバッテリーを別チップとする例である。 (Embodiment 5)
The fifth embodiment will be described below with reference to the drawings. This embodiment is an example in which the system / power supply control unit and the backup battery are separate chips from the control unit of the second embodiment.
　図１１は、本実施の形態に係る制御ユニットを含む車両制御システム２の構成を示している。実施の形態２の図３では制御ユニット１００が１つの半導体チップ１０を備えているのに対し、図１１の制御ユニット１００は、マイコン搭載用の半導体チップ５１と、システム／電源制御部およびバックアップバッテリー搭載用の半導体チップ５２とを備えている。チップ構成以外については、図３と同様である。 FIG. 11 shows a configuration of the vehicle control system 2 including the control unit according to the present embodiment. In FIG. 3 of the second embodiment, the control unit 100 includes one semiconductor chip 10, whereas the control unit 100 in FIG. 11 includes a semiconductor chip 51 for mounting a microcomputer, a system / power supply control unit, and a backup battery. And a semiconductor chip 52 for mounting. Except for the chip configuration, it is the same as FIG.
　半導体チップ５１は、図３の構成のうち、レギュレータ１１、ＣＰＵ１４、メモリ１５、インタフェース１６～１８を備えている。半導体チップ５２は、図３の構成のうち、電源スイッチ１２、バックアップバッテリー１３、システム／電源制御部１９、ドアロック制御部２０、ウィンドウロック制御部２１、アイソレータ２２を備えている。半導体チップ５１と半導体チップ５２とは、電源インタフェースピン５３およびＣＰＵ１４とシステム／電源制御部１９との信号インタフェースピン５４（インタフェース信号）を介して接続されている。 The semiconductor chip 51 includes a regulator 11, a CPU 14, a memory 15, and interfaces 16 to 18 in the configuration shown in FIG. The semiconductor chip 52 includes a power switch 12, a backup battery 13, a system / power control unit 19, a door lock control unit 20, a window lock control unit 21, and an isolator 22 in the configuration of FIG. 3. The semiconductor chip 51 and the semiconductor chip 52 are connected via a power interface pin 53 and a signal interface pin 54 (interface signal) between the CPU 14 and the system / power controller 19.
　通常動作時には、システム／電源制御部１９により電源スイッチ１２はオンされ、レギュレータ１１からの電源Ｖｄｄ１が電源ドメインＰＤ１および電源ドメインＰＤ２へ供給される。その際、電源インタフェースピン５３を介してレギュレータ１１からバックアップバッテリー１３へ電荷がチャージされる。 During normal operation, the power switch 12 is turned on by the system / power control unit 19, and the power Vdd1 from the regulator 11 is supplied to the power domain PD1 and the power domain PD2. At this time, electric charge is charged from the regulator 11 to the backup battery 13 via the power interface pin 53.
　各種センサが異常を検知すると、ＣＰＵ１４への割り込みを介して、信号インタフェースピン５４（チップ間インタフェース信号）を経由して命令がシステム／電源制御部１９へ伝達される。そうすると、システム／電源制御部１９が電源スイッチ１２をオフすることで、電源ドメインＰＤ２への電源供給経路がレギュレータ１１からバックアップバッテリー１３へ切り替えられ、バックアップバッテリー１３にチャージされた電荷が電源ドメインＰＤ２へ供給される。バックアップバッテリー１３が正常に供給された後、システム／電源制御部１９の指示により、ドアロック制御部２０及びウィンドウロック制御部２１がドアロックとウィンドウロックを解除する。 When various sensors detect an abnormality, a command is transmitted to the system / power control unit 19 via the signal interface pin 54 (inter-chip interface signal) via an interrupt to the CPU 14. Then, when the system / power control unit 19 turns off the power switch 12, the power supply path to the power domain PD2 is switched from the regulator 11 to the backup battery 13, and the charge charged in the backup battery 13 is transferred to the power domain PD2. Supplied. After the backup battery 13 is normally supplied, the door lock control unit 20 and the window lock control unit 21 release the door lock and the window lock according to an instruction from the system / power control unit 19.
　このように、実施の形態２に対し、バックアップバッテリー及びシステム／電源制御部を別チップとした場合でも、実施の形態２と同様の効果が得られる。すなわち、事故等の緊急時にバックアップバッテリーに切り替え、より早く確実にドアロック及びウィンドウロックを解除することができる。また、バックアップバッテリー及びシステム／電源制御部を含む電源ドメインＰＤ２を別チップとすることで、異常時に動作する回路のみの半導体チップとすることができ、より高速動作が可能となる。 Thus, even when the backup battery and the system / power supply control unit are separate chips from the second embodiment, the same effect as the second embodiment can be obtained. That is, it is possible to switch to the backup battery in an emergency such as an accident and to release the door lock and the window lock more quickly and reliably. In addition, by making the power domain PD2 including the backup battery and the system / power control unit as a separate chip, it is possible to make a semiconductor chip having only a circuit that operates in the event of an abnormality, and a higher speed operation is possible.
　以上、本発明者によってなされた発明を実施の形態に基づき具体的に説明したが、本発明は前記実施の形態に限定されるものではなく、その要旨を逸脱しない範囲で種々変更可能であることはいうまでもない。 As mentioned above, the invention made by the present inventor has been specifically described based on the embodiment. However, the present invention is not limited to the embodiment, and various modifications can be made without departing from the scope of the invention. Needless to say.
　上記実施の形態では、衝突センサ、温度センサ、湿度センサ、キーセンサの検出結果に応じてロック回路を行ったが、その他の手段により緊急時の状態を検出してもよい。例えば、事故等が発生するとメインバッテリーの電源電圧が不安定になる恐れがあるため、メインバッテリーの電圧を検出する電源電圧検出部を備え、メインバッテリーの電源電圧が所定値よりも低下した場合に、ＣＰＵへ割り込みを発生させ、電源経路の切り替え、ロック解除を行ってもよい。これにより、メインバッテリーの電源電圧が不安定な場合でも、確実にロック解除を行うことができる。 In the above embodiment, the lock circuit is performed according to the detection results of the collision sensor, the temperature sensor, the humidity sensor, and the key sensor, but the emergency state may be detected by other means. For example, if an accident occurs, the power supply voltage of the main battery may become unstable.Therefore, a power supply voltage detection unit that detects the voltage of the main battery is provided, and the power supply voltage of the main battery drops below a predetermined value. The CPU may be interrupted to switch the power supply path and release the lock. Thereby, even when the power supply voltage of the main battery is unstable, the lock can be reliably released.
　上記実施の形態では、ドアロック及びウィンドウロックのロック解除の制御を行ったが、緊急時にその他の制御を行ってもよい。例えば、事故や災害の発生をセンサにより検出した場合に、ブレーキ制御ユニットを介してブレーキングを行うことで車両を停止させたり、エンジン制御ユニットを介してエンジンを停止させてもよい。ブレーキング及びエンジン停止をすることで車外へ安全に脱出できる状態となった後に、上記実施の形態のようにロック解除を行ってもよい。 In the above embodiment, the door lock and the window lock are unlocked, but other controls may be performed in an emergency. For example, when the occurrence of an accident or disaster is detected by a sensor, the vehicle may be stopped by braking via the brake control unit, or the engine may be stopped via the engine control unit. After reaching a state where it can be safely escaped from the vehicle by braking and stopping the engine, unlocking may be performed as in the above embodiment.
１　　　車両
２　　　車両制御システム
１０　　半導体チップ
１０ａ　基板
１０ｂ　樹脂
１１　　レギュレータ
１２　　電源スイッチ
１３　　バックアップバッテリー
１５　　メモリ
１６～１８、２５　インタフェース（Ｉ／Ｆ）
１９　　システム／電源制御部
２０　　ドアロック制御部
２１　　ウィンドウロック制御部
２２　　アイソレータ
２３、２４　内部バス
３０　　メインバッテリー
３１　　衝突センサ
３２　　温度センサ
３３　　湿度センサ
３４　　ドアロックアクチュエータ
３５　　ウィンドウロックアクチュエータ
３６　　キーセンサ
４１、４２　半導体チップ
４３　電源インタフェースピン
５１、５２　半導体チップ
５３　電源インタフェースピン
５４　信号インタフェースピン
１００　制御ユニット
１０１　ドア制御ユニット
１０２　ライト制御ユニット
１０３　ブレーキ制御ユニット
１０４　エンジン制御ユニット
１０５　ナビゲーション制御ユニット
１１１　電源端子
１１２　検出端子
１１３　バックアップ電源部
１１４　電源切り替え部
１１５　ロック解除部
１２０　メイン電源部
１２１　センサ
２０１、２０１ａ～２０１ｈ　外部端子
２０２　防水／耐熱コネクタ
２１０　ケーブル
２１１　防水／耐熱チューブ
２１２　防水／耐熱コネクタ
ＰＤ１、ＰＤ２　電源ドメイン
Ｖｄｄ０　メイン電源
Ｖｄｄ１　安定電源
Ｖｄｄ２　バックアップ電源 DESCRIPTION OF SYMBOLS 1 Vehicle 2 Vehicle control system 10 Semiconductor chip 10a Board | substrate 10b Resin 11 Regulator 12 Power switch 13 Backup battery 15 Memory 16-18, 25 Interface (I / F)
19 System / Power Supply Control Unit 20 Door Lock Control Unit 21 Window Lock Control Unit 22 Isolators 23 and 24 Internal Bus 30 Main Battery 31 Collision Sensor 32 Temperature Sensor 33 Humidity Sensor 34 Door Lock Actuator 35 Window Lock Actuator 36 Key Sensors 41 and 42 Semiconductor Chip 43 Power Interface Pins 51, 52 Semiconductor Chip 53 Power Interface Pin 54 Signal Interface Pin 100 Control Unit 101 Door Control Unit 102 Light Control Unit 103 Brake Control Unit 104 Engine Control Unit 105 Navigation Control Unit 111 Power Terminal 112 Detection Terminal 113 Backup Power Supply Unit 114 Power supply switching unit 115 Unlocking unit 120 Main power supply unit 121 Sensor 201 201a ~ 201h external terminal 202 waterproof / resistant connector 210 Cable 211 waterproof / heat tube 212 waterproof / resistant connector PD1, PD2 power domain Vdd0 main power Vdd1 stable supply Vdd2 backup power

Claims (20)

  1. 　メイン電源が供給される電源端子と、
    　センサの検出信号が入力される検出端子と、
    　前記電源端子に供給されたメイン電源に基づきバックアップ電源を生成するバックアップ電源部と、
    　前記検出端子に入力された検出信号に基づき電源の供給源を前記メイン電源から前記バックアップ電源に切り替える電源切り替え部と、
    　前記切り替えられたバックアップ電源を動作電源としてドアロックまたはウィンドウロックのロック解除を行うロック解除部と、
    　を備える制御ユニット。     A power supply terminal to which main power is supplied;
    A detection terminal to which a detection signal of the sensor is input;
    A backup power supply unit that generates a backup power supply based on a main power supply supplied to the power supply terminal;
    A power supply switching unit that switches a power supply source from the main power supply to the backup power supply based on a detection signal input to the detection terminal;
    An unlocking unit for unlocking a door lock or a window lock using the switched backup power supply as an operation power supply;
    A control unit comprising:
  2. 　前記電源切り替え部は、
    　前記電源の供給源を前記メイン電源または前記バックアップ電源に切り替える電源スイッチと、
    　前記検出端子に検出信号が入力されたときに割り込み処理を実行する割り込み制御部と、
    　前記割り込み処理の実行に応じて前記電源スイッチを制御し、前記電源の供給源を前記メイン電源から前記バックアップ電源に切り替える電源制御部と、を含む、
    　請求項１に記載の制御ユニット。     The power switching unit is
    A power switch that switches the power source to the main power source or the backup power source;
    An interrupt control unit that executes an interrupt process when a detection signal is input to the detection terminal;
    A power control unit that controls the power switch in accordance with execution of the interrupt process and switches the power supply source from the main power source to the backup power source,
    The control unit according to claim 1.
  3. 　前記バックアップ電源部、前記電源切り替え部及び前記ロック解除部は、耐熱性及び防水性を有する半導体パッケージに封入されている、
    　請求項１に記載の制御ユニット。     The backup power supply unit, the power supply switching unit, and the lock release unit are enclosed in a semiconductor package having heat resistance and waterproofness.
    The control unit according to claim 1.
  4. 　前記半導体パッケージ内に第１の半導体チップを含み、
    　前記バックアップ電源部、前記電源切り替え部及び前記ロック解除部は、前記第１の半導体チップに実装されている、
    　請求項３に記載の制御ユニット。     Including a first semiconductor chip in the semiconductor package;
    The backup power supply unit, the power supply switching unit, and the lock release unit are mounted on the first semiconductor chip.
    The control unit according to claim 3.
  5. 　前記半導体パッケージ内に第１及び第２の半導体チップを含み、
    　前記バックアップ電源部は前記第１の半導体チップに実装され、前記電源切り替え部及び前記ロック解除部は前記第２の半導体チップに実装されている、
    　請求項３に記載の制御ユニット。     The semiconductor package includes first and second semiconductor chips,
    The backup power supply unit is mounted on the first semiconductor chip, and the power supply switching unit and the lock release unit are mounted on the second semiconductor chip.
    The control unit according to claim 3.
  6. 　前記バックアップ電源部、前記電源スイッチ、前記割り込み制御部、前記電源制御部及び前記ロック解除部は、耐熱性及び防水性を有する半導体パッケージに封入されており、
    　前記半導体パッケージ内に第１及び第２の半導体チップを含み、
    　前記割り込み制御部は前記第１の半導体チップに実装され、前記バックアック電源部、前記電源スイッチ、前記電源制御部及び前記ロック解除部は前記第２の半導体チップに実装されている、
    　請求項２に記載の制御ユニット。     The backup power supply unit, the power switch, the interrupt control unit, the power control unit, and the lock release unit are sealed in a heat-resistant and waterproof semiconductor package,
    The semiconductor package includes first and second semiconductor chips,
    The interrupt control unit is mounted on the first semiconductor chip, and the backup power supply unit, the power switch, the power control unit, and the lock release unit are mounted on the second semiconductor chip.
    The control unit according to claim 2.
  7. 　前記バックアップ電源部は、容量素子であり、
    　前記容量素子が前記メイン電源を充電することで、前記バックアップ電源を生成する、
    　請求項１に記載の制御ユニット。     The backup power supply unit is a capacitive element,
    The capacitive element generates the backup power supply by charging the main power supply.
    The control unit according to claim 1.
  8. 　前記センサは、車両の衝突を検出する衝突センサを含み、
    　前記衝突センサから衝突の検出に応じて前記検出信号が入力されたときに、前記電源切り替え部が前記電源の供給源を切り替え、さらに、前記ロック解除部が前記ロック解除を行う、
    　請求項１に記載の制御ユニット。     The sensor includes a collision sensor that detects a collision of a vehicle,
    When the detection signal is input from the collision sensor in response to the detection of a collision, the power supply switching unit switches the power supply source, and the lock release unit performs the unlocking.
    The control unit according to claim 1.
  9. 　前記センサは、車両の温度を検出する温度センサを含み、
    　前記温度センサから所定の温度の検出に応じて前記検出信号が入力されたときに、前記電源切り替え部が前記電源の供給源を切り替え、さらに、前記ロック解除部が前記ロック解除を行う、
    　請求項１に記載の制御ユニット。     The sensor includes a temperature sensor that detects a temperature of the vehicle,
    When the detection signal is input in response to detection of a predetermined temperature from the temperature sensor, the power supply switching unit switches the power supply source, and the unlocking unit performs the unlocking;
    The control unit according to claim 1.
  10. 　前記センサは、車両の湿度を検出する湿度センサを含み、
    　前記湿度センサから所定の湿度の検出に応じて前記検出信号が入力されたときに、前記電源切り替え部が前記電源の供給源を切り替え、さらに、前記ロック解除部が前記ロック解除を行う、
    　請求項１に記載の制御ユニット。     The sensor includes a humidity sensor that detects the humidity of the vehicle,
    When the detection signal is input from the humidity sensor in response to detection of a predetermined humidity, the power supply switching unit switches the power supply source, and the lock release unit performs the unlocking.
    The control unit according to claim 1.
  11. 　前記センサは、キーシリンダにイグニッションキーが挿入されたことを検出するキーセンサを含み、
    　前記センサから前記検出信号が入力され、かつ、前記イグニッションキーが挿入されている場合に、前記電源切り替え部が前記電源の供給源を切り替え、さらに、前記ロック解除部が前記ロック解除を行う、
    　請求項１に記載の制御ユニット。     The sensor includes a key sensor that detects that an ignition key has been inserted into the key cylinder,
    When the detection signal is input from the sensor and the ignition key is inserted, the power supply switching unit switches the power supply source, and the unlocking unit performs the unlocking;
    The control unit according to claim 1.
  12. 　前記センサから前記検出信号が入力され、かつ、車両のエンジンが作動している場合に、前記電源切り替え部が前記電源の供給源を切り替え、さらに、前記ロック解除部が前記ロック解除を行う、
    　請求項１に記載の制御ユニット。     When the detection signal is input from the sensor and the engine of the vehicle is operating, the power switching unit switches the power supply source, and the unlocking unit performs the unlocking;
    The control unit according to claim 1.
  13. 　それぞれ個別に電源が供給される複数の電源供給領域を備え、
    　前記バックアップ電源部は、前記ロック解除部を含む前記電源供給領域に前記バックアップ電源を供給する、
    　請求項１に記載の制御ユニット。     It has a plurality of power supply areas where power is individually supplied,
    The backup power supply unit supplies the backup power to the power supply area including the lock release unit.
    The control unit according to claim 1.
  14. 　それぞれ個別に電源が供給される第１及び第２の電源供給領域を備え、
    　前記第１の電源供給領域は、前記割り込み制御部を含み、
    　前記第２の電源供給領域は、前記電源制御部及び前記ロック解除部と含み、
    　前記バックアップ電源部は、前記第２の電源供給領域に前記バックアップ電源を供給する、
    　請求項２に記載の制御ユニット。     A first power supply region and a second power supply region to which power is individually supplied;
    The first power supply area includes the interrupt control unit,
    The second power supply region includes the power control unit and the lock release unit,
    The backup power supply unit supplies the backup power to the second power supply region;
    The control unit according to claim 2.
  15. 　前記電源の供給源を前記メイン電源から前記バックアップ電源に切り替えた場合に、前記割り込み制御部と前記電源制御部との間の信号の伝達を遮断するアイソレータを備える、
    　請求項２に記載の制御ユニット。     An isolator that cuts off transmission of signals between the interrupt control unit and the power supply control unit when the power supply source is switched from the main power supply to the backup power supply;
    The control unit according to claim 2.
  16. 　前記供給されるメイン電源の電圧が所定の電圧よりも低下した場合に、前記電源切り替え部が前記電源の供給源を切り替え、さらに、前記ロック解除部が前記ロック解除を行う、
    　請求項１に記載の制御ユニット。     When the voltage of the supplied main power source is lower than a predetermined voltage, the power source switching unit switches the power source, and the unlocking unit performs the unlocking.
    The control unit according to claim 1.
  17. 　バックアップ電源を生成するバックアップ電源部と、
    　ドアロックまたはウィンドウロックのロック解除を行うロック解除部と、
    　前記ロック解除部と前記バックアップ電源との接続を切り替える電源切り替え部と、
    　前記バックアップ電源部、前記ロック解除部及び前記電源切り替え部を実装する基板と、
    　前記電源切り替え部に接続され、外部のセンサと電気的に接続するための外部端子を備えたコネクタと、
    　前記基板の全体と、前記コネクタの一部とを一体封止する樹脂と、
    　を備える半導体装置。     A backup power supply for generating a backup power supply;
    An unlocking unit for unlocking the door lock or window lock,
    A power switching unit that switches connection between the unlocking unit and the backup power source;
    A substrate on which the backup power supply unit, the lock release unit and the power supply switching unit are mounted;
    A connector having an external terminal connected to the power supply switching unit and electrically connected to an external sensor;
    A resin for integrally sealing the whole of the substrate and a part of the connector;
    A semiconductor device comprising:
  18. 　前記コネクタは、防水性及び耐熱性を有するコネクタであり、
    　前記樹脂は、防水性及び耐熱性を有する樹脂である、
    　請求項１７に記載の半導体装置。     The connector is a connector having waterproofness and heat resistance,
    The resin is a resin having waterproofness and heat resistance.
    The semiconductor device according to claim 17.
  19. 　前記コネクタと前記センサとはケーブルを介して接続され、
    　前記ケーブルは、防水性及び耐熱性を有するシールドにより覆われている、
    　請求項１７に記載の半導体装置。     The connector and the sensor are connected via a cable,
    The cable is covered with a shield having waterproofness and heat resistance,
    The semiconductor device according to claim 17.
  20. 　メイン電源が供給される電源端子と、センサの検出信号が入力される検出端子とを備えた制御ユニットの制御方法であって、
    　前記電源端子に供給されたメイン電源に基づきバックアップ電源を生成し、
    　前記検出端子に入力された検出信号に基づき電源の供給源を前記メイン電源から前記バックアップ電源に切り替え、
    　前記切り替えられたバックアップ電源を動作電源としてドアロックまたはウィンドウロックのロック解除を行う、
    　制御ユニットの制御方法。     A control method for a control unit including a power supply terminal to which main power is supplied and a detection terminal to which a detection signal of a sensor is input,
    A backup power source is generated based on the main power source supplied to the power terminal,
    Based on the detection signal input to the detection terminal, the power source is switched from the main power source to the backup power source,
    Unlocking the door lock or window lock using the switched backup power supply as an operation power supply,
    Control method of the control unit.
PCT/JP2012/005304 2012-08-24 2012-08-24 Control unit, semiconductor device, and method for controlling control unit WO2014030190A1 (en)

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