JP6009606B1 - Vehicle control device - Google Patents

Abstract

An object of the present invention is to provide a vehicle control device in which the anti-theft control function is not impaired due to communication failure due to noise or the like. When a first control unit in an in-vehicle control device receives a second authentication code transmitted from a portable device by a first receiving circuit, the received second authentication code is the first Whether to match the first authentication code stored in the storage circuit is determined, and the timing for transmitting the authentication code request signal is shifted with respect to the timing for generating an ignition spark in the engine spark plug. The first transmission circuit is controlled. [Selection] Figure 1

Description

  The present invention relates to a vehicle control device that is used in a vehicle such as a motorcycle and has an engine control function and an antitheft control function.

  In recent years, even in small motorcycles that are inexpensive specifications among motorcycles, vehicles equipped with an electronically controlled fuel injection system in an engine control device have become mainstream. The electronically controlled fuel injection system is based on engine information such as crank angle sensor, throttle opening sensor, intake pipe pressure sensor, temperature sensor, etc., and injectors that inject fuel and high voltage to the spark plug to ignite the air-fuel mixture Optimal control of the ignition coil to be output and the device that controls the amount of bypass air has great benefits such as cleaner exhaust gas, reduced fuel consumption, improved startability, and stable idling. Is expected to increase.

  On the other hand, the vehicle anti-theft device transmits the authentication code registered in the ignition key or the portable terminal to the authentication device attached to the vehicle body side, and the relationship with the authentication code registered in advance in the authentication device matches. The engine is allowed to start. In motorcycles, installation has started from high-end vehicles, and for security reasons, it is expected that the need for installation will increase even in cheaper vehicles in the future.

  The conventional vehicle antitheft device disclosed in Patent Document 1 performs wireless communication between a transceiver (electronic key) carried by a user and a control device mounted on an actual vehicle, and collates the ID. This is an electronic key system for a vehicle suitable for use in a motorcycle in which the engine is started or the like when it is a request from an authorized user. A feature of the conventional vehicle antitheft device disclosed in Patent Document 1 is that a warning can be output when the user drops the electronic key while the vehicle is stopped and running. In other words, the probability of losing the electronic key due to the user dropping the electronic key is minimized.

Japanese Patent No. 3913652

  However, a space for mounting an electronic control device is limited in a small two-wheeled vehicle. In the conventional vehicle antitheft device disclosed in Patent Document 1, an antitheft control device and an engine control are provided. Two control devices of the device must be mounted, and there are difficulties in mounting and layout. As a measure for avoiding this mountability problem, it is conceivable to provide the anti-theft control device and the engine control device in the same casing.

  In addition, since a small motorcycle has a low vehicle price, a device that is inexpensive in cost compared to a large motorcycle is required. From this point of view, the anti-theft control device and the engine control device are arranged in the same housing, and furthermore, the electronic circuit of the anti-theft control device and the engine control device is configured on the same board, and the power supply circuit and microcomputer are shared. Obviously, the more common parts, such as, the more advantageous the cost.

  However, when the anti-theft control device and the engine control device are arranged in the same casing, there is a concern that each control device malfunctions due to electromagnetic noise generated by each control device. In particular, among the actuators driven by the engine control device, theft is usually detected to detect portable devices due to the noise at the ignition timing (at the time of primary current interruption) of the ignition coil that has the largest current voltage change during driving. An LF (Low Frequency) signal that is transmitted from the control device to the portable device held by the user is obstructed, and communication failure may occur. In the case of motorcycles, LF band signals are limited to the area of [(distance to the driver's seat) + (slight distance)] from the viewpoint of theft prevention and antenna cost. It is prone to communication failure due to noise.

  If the transmission code from the anti-theft control device to the portable device cannot be recognized by the portable device due to poor communication, the portable device will not reply naturally, so the anti-theft control device cannot recognize the presence of the portable device. There was a problem of warning that the user dropped the mobile device.

  The present invention has been made to solve the above-described problems in a conventional vehicle control device having an engine control function and an anti-theft control function, and prevents theft due to poor communication due to noise or the like. It is an object of the present invention to provide a vehicle control device that does not impair the control function.

The vehicle control device according to the present invention comprises:
A first control unit mounted on a vehicle and having a first transmission circuit, a first reception circuit, an engine control function for controlling the engine of the vehicle, and an anti-theft control function for the vehicle, and a first authentication A vehicle-mounted control device having a first storage circuit storing a code;
A portable device carried by the driver or passenger of the vehicle and having a second transmission circuit, a second reception circuit, a second storage circuit storing a second authentication code, and a second control unit. Machine,
A vehicle control device comprising:
The second control unit in the portable device receives the authentication code request signal transmitted from the first transmission circuit of the in-vehicle control device by the second reception circuit, and then stores the second storage unit. A second authentication code stored in a circuit is configured to be transmitted to the in-vehicle control device by the second transmission circuit;
The first transmission circuit in the in-vehicle control device is configured to transmit the authentication code request signal using a frequency belonging to a long wave band,
The second transmission circuit in the portable device is configured to transmit the second authentication code using a frequency belonging to a frequency band higher than a frequency belonging to the long wave band,
When the first control unit in the in-vehicle control device receives the second authentication code transmitted from the portable device by the first receiving circuit, the received second authentication code is It is determined whether or not the first authentication code stored in the first storage circuit matches , and predetermined after an ignition spark is generated in the ignition plug of the engine based on the terminal voltage of the ignition coil older than time, and the transmission terminal voltage of the spark plug is the authentication code request signal by Uni the first that sends when in voltage difference within a predetermined range with respect to the onboard battery voltage to the vehicle Configured to control the circuit,
It is characterized by that.

In addition, the vehicle control device according to the present invention includes:
A first control unit mounted on a vehicle and having a first transmission circuit, a first reception circuit, an engine control function for controlling the engine of the vehicle, and an anti-theft control function for the vehicle, and a first authentication A vehicle-mounted control device having a first storage circuit storing a code;
A portable device carried by the driver or passenger of the vehicle and having a second transmission circuit, a second reception circuit, a second storage circuit storing a second authentication code, and a second control unit. Machine,
A vehicle control device comprising:
A first control mode is executed when the engine speed is less than a predetermined value, and a second control mode is executed when the engine speed is greater than or equal to a predetermined value;
The first control mode is:
Wherein in the first control unit to the vehicle control device, said relative timing of generating an ignition spark in the spark plug of the engine so as shifting the timing of transmitting the authentication code request signal first transmission circuit When the second control unit in the portable device receives the authentication code request signal transmitted from the first transmission circuit of the in-vehicle control device by the second reception circuit, A control mode in which the second authentication code stored in the second storage circuit is transmitted to the in-vehicle control device by the second transmission circuit;
The second control mode is:
The first control unit in the in-vehicle control device transmits information indicating that the engine speed is a predetermined value or more together with the authentication code request signal to the portable device, and then the engine speed is The first transmission circuit is controlled to stop transmission of the authentication code request signal until the predetermined value is less than the predetermined value, and the second control unit in the portable device is configured so that the second reception circuit is Upon receiving the authentication code request signal and recognizing that the engine speed is greater than or equal to the predetermined value, the in-vehicle control device stores the second authentication code stored in the second storage circuit at predetermined time intervals. A control mode for controlling the second transmission circuit so as to continue transmission to
The first transmission circuit in the in-vehicle control device is configured to transmit the authentication code request signal using a frequency belonging to a long wave band,
The second transmission circuit in the portable device is configured to transmit the second authentication code using a frequency belonging to a frequency band higher than a frequency belonging to the long wave band,
When the first control unit in the in-vehicle control device receives the second authentication code transmitted from the portable device by the first receiving circuit, the received second authentication code is A determination function for determining whether or not the first authentication code stored in the first storage circuit matches;
It is characterized by that.

Furthermore, the vehicle control device according to the present invention provides:
A first control unit mounted on a vehicle and having a first transmission circuit, a first reception circuit, an engine control function for controlling the engine of the vehicle, and an anti-theft control function for the vehicle, and a first authentication A vehicle-mounted control device having a first storage circuit storing a code;
A portable device carried by the driver or passenger of the vehicle and having a second transmission circuit, a second reception circuit, a second storage circuit storing a second authentication code, and a second control unit. Machine,
A vehicle control device comprising:
A first control mode is executed when the engine speed is less than a predetermined value, and a second control mode is executed when the engine speed is greater than or equal to a predetermined value;
The first control mode is:
Wherein in the first control unit to the vehicle control device, said relative timing of generating an ignition spark in the spark plug of the engine so as shifting the timing of transmitting the authentication code request signal first transmission circuit When the second control unit in the portable device receives the authentication code request signal transmitted from the first transmission circuit of the in-vehicle control device by the second reception circuit, A control mode in which the second authentication code stored in the second storage circuit is transmitted to the in-vehicle control device by the second transmission circuit;
The second control mode is:
If the second control unit in the portable device does not receive the authentication code request signal for a predetermined period after receiving the authentication code request signal by the second receiving circuit, the engine speed is Controlling the second transmission circuit to continue to transmit the second authentication code stored in the second storage circuit to the in-vehicle control device at a predetermined time interval by determining that the predetermined value or more has been reached, A control mode in which the first control unit in the in-vehicle control device controls the first transmission circuit to stop the transmission of the authentication code request signal until the rotational speed of the engine becomes less than the predetermined value. And
The first transmission circuit in the in-vehicle control device is configured to transmit the authentication code request signal using a frequency belonging to a long wave band,
The second transmission circuit in the portable device is configured to transmit the second authentication code using a frequency belonging to a frequency band higher than a frequency belonging to the long wave band,
When the first control unit in the in-vehicle control device receives the second authentication code transmitted from the portable device by the first receiving circuit, the received second authentication code is A determination function for determining whether or not the first authentication code stored in the first storage circuit matches;
It is characterized by that.

According to the vehicle control device of the present invention, the second transmission circuit in the portable device transmits the second authentication code using a frequency belonging to a frequency band higher than a frequency belonging to the long wave band. The first control unit in the in-vehicle control device is configured to receive the second authentication code transmitted from the portable device when the first reception circuit receives the second authentication code. It is determined whether or not a second authentication code matches the first authentication code stored in the first storage circuit, and an ignition spark is applied to the ignition plug of the engine based on the terminal voltage of the ignition coil. It is transmitted but elapsed from the occurrence predetermined time or more, and the authentication code request signal when in the voltage difference within a predetermined range with respect to the voltage of a battery mounted terminal voltage of the spark plug to the vehicle Since I is configured to controlled so the first transmission circuit, it is possible to reduce the influence on the LF communication noise by blocking the primary current of the ignition coil, the buzzer sounding unnecessarily There is an effect that no alarm is displayed on the instrument panel.

According to the vehicle control apparatus of the present invention, the first control mode is executed when the engine speed is less than a predetermined value, and the second control is performed when the engine speed is greater than the predetermined value. is configured to perform mode, the first control mode, the in the first control unit to the vehicle control device, authentication code to the timing of generating an ignition spark in the spark plug of the engine The first transmission circuit is controlled to shift the timing of transmitting the request signal, and the second control unit in the portable device is transmitted from the first transmission circuit of the in-vehicle control device. When the authentication code request signal is received by the second receiving circuit, the second authentication code stored in the second storage circuit is transmitted to the in-vehicle control device by the second transmission circuit. In the second control mode, the first control unit in the in-vehicle control device transmits information indicating that the engine speed is a predetermined value or more together with the authentication code request signal to the portable device. After that, the first transmission circuit is controlled to stop the transmission of the authentication code request signal until the rotational speed of the engine becomes less than the predetermined value, and the second control unit in the portable device is When the second receiving circuit receives the authentication code request signal and recognizes that the engine speed is equal to or higher than the predetermined value, the second authentication code stored in the second storage circuit is determined in advance. Is a control mode in which the second transmission circuit is controlled so as to continue transmission to the in-vehicle control device at a time interval of, and the first transmission circuit in the in-vehicle control device uses a frequency belonging to a long wave band. The authentication code request signal is transmitted, and the second transmission circuit in the portable device uses the second authentication code using a frequency belonging to a frequency band higher than a frequency belonging to the long wave band. The first control unit in the in-vehicle control device receives the second authentication code transmitted from the portable device when the first receiving circuit receives the second authentication code. Since the determination function for determining whether or not the second authentication code matches the first authentication code stored in the first storage circuit is provided, the transmission of the engine whose transmission is not completed within the ignition cycle is provided. It is possible to detect the fall of the portable device, etc. at high revolutions, and no buzzer will sound without warning or alarm display on the instrument panel even at high revolutions of the engine. There are effects such as.

Furthermore, according to the vehicle control apparatus of the present invention, the first control mode is executed when the engine speed is less than the predetermined value, and the second control is performed when the engine speed is greater than the predetermined value. is configured to perform mode, the first control mode, the in the first control unit to the vehicle control device, authentication code to the timing of generating an ignition spark in the spark plug of the engine The first transmission circuit is controlled to shift the timing of transmitting the request signal, and the second control unit in the portable device is transmitted from the first transmission circuit of the in-vehicle control device. When the authentication code request signal is received by the second receiving circuit, the second authentication code stored in the second storage circuit is transmitted to the in-vehicle control device by the second transmission circuit. In the second control mode, the second control unit in the portable device receives the authentication code request signal for a predetermined period after receiving the authentication code request signal by the second receiving circuit. Otherwise, it is determined that the rotational speed of the engine has become equal to or greater than the predetermined value, and the second authentication code stored in the second storage circuit is continuously transmitted to the in-vehicle control device at predetermined time intervals. 2, and the first control unit in the in-vehicle control device stops the transmission of the authentication code request signal until the rotational speed of the engine becomes less than the predetermined value. 1 is a control mode for controlling one transmission circuit, and the first transmission circuit in the in-vehicle control device is configured to transmit the authentication code request signal using a frequency belonging to a long wave band, The second transmission circuit is configured to transmit the second authentication code using a frequency belonging to a frequency band higher than a frequency belonging to the long wave band, and the vehicle-mounted control device includes: When the first control unit receives the second authentication code transmitted from the portable device by the first receiving circuit, the received second authentication code is stored in the first storage circuit. Since it has a determination function for determining whether or not it matches the first authentication code that has been made, it is possible to detect the fall of the portable device at the time of high engine rotation when transmission is not completed within the ignition cycle. This is advantageous in that the buzzer will sound without darkness even when the engine is running at a high speed and the alarm will not be displayed on the instrument panel.

It is a block diagram which shows the whole structure of the control apparatus for vehicles by Embodiment 1 and Embodiment 2 of this invention. It is a flowchart explaining operation | movement of the vehicle control apparatus by Embodiment 1 of this invention. It is a time chart explaining operation | movement of the control apparatus for vehicles by Embodiment 1 of this invention. It is a flowchart explaining the operation | movement by embodiment of this invention.

Embodiment 1 FIG.
FIG. 1 is a configuration diagram showing the overall configuration of a vehicle control apparatus according to Embodiment 1 of the present invention and Embodiment 2 described later. In FIG. 1, an in-vehicle control device 1 in which an engine control function and an antitheft control function are housed in a single housing includes a power supply circuit 3, a first control unit 4, a first storage circuit 5, LF transmission circuit 6 as one transmission circuit, UHF reception circuit 7 as a first reception circuit, battery output voltage detection circuit 31, and a first interface circuit (hereinafter referred to as a first I / F) 32, a second interface circuit (hereinafter referred to as a second I / F) 33, a third interface circuit (hereinafter referred to as a third I / F) 34, and an ignition coil terminal voltage detection circuit 35. For example, a switch element 36 composed of a power transistor, a fourth interface circuit (hereinafter referred to as a fourth I / F) 37, and a fifth interface circuit (hereinafter referred to as a fifth I / F). 38) Provided.

  The power supply circuit 3 generates a power supply for the first control unit 4 and the like provided in the in-vehicle control device 1 based on the voltage supplied from the battery 2. The first control unit 4 is operated by the power supply generated by the power supply circuit 3. The LF transmission circuit 6 transmits an LF signal 21 that is a radio wave in the LF band (for example, 30 to 300 [KHz]) to the portable device 14. The UHF receiving circuit 7 receives a UHF signal 22 that is a radio wave in a UHF (Ultra High Frequency) band (for example, 300 to 3000 [MHz]) from the portable device 14.

  A specific first authentication code is stored in the first storage circuit. The battery output voltage detection circuit 31 detects the output voltage of the battery 2 and inputs it to the first control unit 4. A start switch 8 provided outside the in-vehicle control device 1 is connected to the first control unit 4 via the first I / F 32, and includes a vehicle state confirmation device including various sensors for confirming the vehicle state. 9 is connected to the first control unit 4 via the second I / F 33. The ignition coil terminal voltage detection circuit 35 detects the terminal voltage of the ignition coil 11 provided outside the in-vehicle control device 1 and inputs it to the control unit 4.

  The warning device 10 provided outside the in-vehicle control device 1 is connected to the first control unit 4 via the third I / F 34, and when the fall of the portable device 14 is detected, the warning device 10 is provided to the driver. A warning sound is emitted to warn. The ignition coil 11 is connected to the first control unit 4 via a switch element 36 in order to control the engine. An injector 12 and a fuel pump 13 provided outside the in-vehicle control device 1 are connected to the control unit 4 via a fourth I / F 37 and a fifth I / F 38, respectively.

  In FIG. 1, the engine control function and the anti-theft control function are housed in a single casing and configured as the in-vehicle control device 1. There is no particular problem even if each substrate is provided, or the first control unit 4 is provided separately for the engine control function and the antitheft control function.

  The portable device 14 operates with the battery 18 as a power source, and includes an LF reception circuit 15 as a second reception circuit that performs wireless communication with the in-vehicle control device 1 and a UHF transmission circuit 16 as a second transmission circuit. Also, a second storage circuit 19 that stores a specific second authentication code, a time passage confirmation device 20 for managing the passage of time, an LF reception circuit 15, a UHF transmission circuit 16, and a time passage confirmation device 20 And a second control unit 17 for controlling. Note that the clock in the second control unit 17 may be used in place of the time elapse confirmation device 20.

  FIG. 2 is a flowchart for explaining the operation of the vehicle control apparatus according to Embodiment 1 of the present invention. In FIG. 2, it is assumed that the portable device 14 is sleeping before the vehicle is started. In step S1, the driver who has the portable device 14 switches the start switch 8 of the vehicle to which the vehicle-mounted control device 1 is attached from off to on.

When the start switch 8 is turned on, the process proceeds to step S <b> 2, and the in-vehicle control device 1 wirelessly transmits an authentication code request signal from the LF transmission circuit 6 to the portable device 14 using the LF signal 21. The portable device 14 receives the LF signal 21 from the LF transmission circuit 6 of the in-vehicle control device 1 by the LF reception circuit 15, leaves the sleep state, and stores the second authentication code stored in the second storage circuit 25. The UHF transmission circuit 16 transmits the UHF signal 22 to the in-vehicle control device 1. The in-vehicle control device 1 receives the second authentication code transmitted from the portable device 14 by the UHF receiving circuit 7 and then collates with the first authentication code stored in the first storage circuit 5. As a result of the collation, if these authentication codes match (Yes), the process proceeds to step S3. If the authentication codes do not match (No), the process returns to step S1. In addition, while returning to step S1, the vehicle-mounted control apparatus 1 may notify a driver | operator of the mismatch of an authentication code using the warning device 10. FIG.

  In step S3, since the authentication codes match, the start of the engine is permitted, the in-vehicle control device 1 controls the ignition coil 11, the injector 12, and the fuel pump 13 to start engine control. When engine control is started, the process proceeds to step S4. Step S4 is a step of determining whether or not authentication communication for detecting the portable device 14 may be performed.

  Next, the contents of the process in step S4 will be described with reference to FIG. FIG. 3 is a time chart for explaining the operation of the vehicle control apparatus according to Embodiment 1 of the present invention. In FIG. 3, (a) shows an operation process of the four-cycle engine attached to the vehicle, and represents an “intake process”, a “compression process”, a “combustion process”, and an “exhaust process”. (B) shows the primary current of the ignition coil, and represents the current flowing through the coil on the in-vehicle control device 1 side of the ignition coil 11. (C) shows the terminal voltage of the ignition coil, and represents the voltage obtained from the ignition coil terminal voltage detection circuit 35. (D) shows the LF transmission timing, and represents the timing at which the in-vehicle control device 1 transmits the LF signal 21.

  In FIG. 3, the first control unit 4 of the in-vehicle control device 1 confirms the stroke of the engine operation stroke based on the input signal from the vehicle state confirmation device 9 and supplies the primary current to the ignition coil 11. At the time t1, which is the timing, the switch element 35 is turned on to store magnetic energy in the magnetic body of the ignition coil 11. As a result, the terminal voltage of the ignition coil 11 becomes 0 [V] as shown in (c), and the primary current of the ignition coil starts to flow in the primary coil of the ignition coil 11 as shown in (b). Next, the switch element 35 is turned off at time t2. At time t2 when the switch element 35 is turned off, the first control unit 4 operates the engine based on input signals from various sensors such as a crank angle sensor and an intake pressure sensor that constitute the vehicle state confirmation device 9. This is the timing at which it is determined that this is the initial stage of the “combustion stroke” in the stroke.

  By turning off the switch element 35 at time t2, the primary current flowing to the primary side of the ignition coil 11 becomes 0 [A], and the reverse is caused by the magnetic energy stored in the period from time t1 to time t2. Voltage is generated. The reverse voltage is induced on the secondary side of the ignition coil 11, and spark discharge is generated from the spark plug connected to the secondary side of the ignition coil 11. At the instant when the primary current of the ignition coil becomes 0 [A], that is, at the instant of time t2, a very large noise is generated inside the in-vehicle control device 1. Since the reverse voltage is generated not only on the secondary side of the ignition coil 11 but also on the primary side, the ignition coil terminal voltage rises steeply as shown in FIG. Thereafter, since spark discharge occurs in the spark plug, the terminal voltage of the ignition coil gradually decreases to a battery voltage (for example, 14 [V]) as shown in (c).

  The first control unit 4 causes the LF transmission circuit 6 of the in-vehicle control device 1 to transmit the LF signal 21 at time t3. At this time t3, the ignition coil terminal voltage detection circuit 35 detects the terminal voltage of the ignition coil (battery voltage ± 1.0 [V]), the spark discharge of the spark plug ends, and the noise is reduced. It's time. This time t3 is, for example, a time when 10 [ms] or more has elapsed since the ignition of the fuel by the spark discharge of the spark plug, and is determined by the first control unit 4. The transmission of the LF signal 21 from the LF transmission circuit 6 is performed during the transmission time from time t3 to time t4, and the authentication code request signal is wirelessly transmitted to the portable device 14 by the LF signal 21. Since the transmission of the LF signal 21 is performed in a state where the spark discharge of the spark plug ends and the noise is reduced, the possibility of successful LF communication is increased.

  The portable device 14 receives the LF signal 21 from the LF transmission circuit 6 of the in-vehicle control device 1 by the LF reception circuit 15 and receives the second authentication code stored in the second storage circuit 25 from the UHF transmission circuit 16. It transmits to the vehicle-mounted control apparatus 1 by the UHF signal 22. Since the UHF signal 22 is originally used for an answer back, the communication distance is designed in the range of several tens [m], and the frequency is as high as 300 to 3000 [MHz]. There is no need to measure the timing.

  As described above, in order to start LF communication at time t3, in step S4, the battery voltage value obtained from the battery output voltage detection circuit 31 after several [ms] (for example, 10 [ms]) from ignition. And the ignition coil terminal voltage value obtained from the ignition coil terminal voltage detection circuit 35 of the ignition coil 11 are compared by the first control unit 4, and the deviation of these voltage values is ± several [V] (for example, ± 1. 0 [V]) or less (Yes), the authentication communication start is permitted, and the process proceeds to step S5. If either one of the conditions is not satisfied (No), the process returns to step S4 again and the above-described step S4 is performed. Repeat the process.

  In step S5, since the second authentication code is transmitted from the portable device 14 to the in-vehicle control device 1 by the UHF signal 22 avoiding the timing at which noise is generated by the ignition coil 11, the above-described operation is not affected by noise. As in step S2, the first authentication code stored in the first storage circuit 5 is compared with the second authentication code. As a result of the collation, if these authentication codes match (Yes), the process proceeds to step S6. If the authentication codes do not match (No), the process proceeds to step S7.

  In step S6, the in-vehicle control device 1 determines whether or not the engine is stopped. Since the vehicle-mounted control apparatus 1 is controlling the ignition coil 11 and the injector 12, if it has stopped, it will judge that the engine has stopped. If the in-vehicle control device 1 determines that the engine is stopped (Yes), the processing flow shown in FIG. 2 ends. If the engine is not stopped (No), the process returns to step S4, and the above-described presence confirmation operation of the portable device 14 is continued.

  On the other hand, if these authentication codes do not match as a result of the verification of the first authentication code and the second authentication code in step S5 (No), in-vehicle control device 1 in step S7 The number of times the reception of the UHF signal 22 has failed despite the transmission of the LF signal 21 is counted. For example, if the in-vehicle control device 1 fails to receive the UHF signal 22 three times consecutively, the first authentication code and the second authentication code do not match three times in succession, and the in-vehicle control device 1 and the portable device 14 The distance is more than the communication distance and it is determined that the portable device 14 has fallen (Yes), the process proceeds to step S8, and the driver is notified using the warning device 10.

  If the number of unsuccessful receptions of the UHF signal 22 is within 2 consecutive times, that is, if the mismatch between the first authentication code and the second authentication code is within 2 times (No), the process returns to step S4, and the above-described portable device 14 Continue the existence check operation. The reason for returning to step S4 is that if the number of reception failures is within two, communication may have failed due to other factors even though the portable device 14 has not actually dropped. It is.

  As described above, when the engine control function and the anti-theft control function are housed in one case, the current is cut off compared to the conventional configuration in which the engine control function and the anti-theft control function are provided in separate cases. Since the switch element 35 and the LF transmission circuit 6 that transmits the LF signal 21 for detecting the portable device 14 are close to each other, the influence on the LF communication due to noise generated by blocking the primary current of the ignition coil 11 is increased. However, according to the control apparatus for a vehicle according to the first embodiment of the present invention, the timing for driving the LF transmission circuit 6 is avoided with respect to the timing at which noise is generated due to the interruption of the primary side current of the ignition coil 11. By interrupting the primary side current of the ignition coil 11, it is possible to eliminate the influence on the LF communication caused by noise generated, and the buzzer sounds silently. It and alarm instrument panel that is being it is no display.

  In addition, according to the vehicle control device according to the first embodiment of the present invention, the engine control function and the anti-theft control function are housed in one housing, and the communication line between the devices can be eliminated. Thus, the restrictions on the layout of the in-vehicle control device 1 can be reduced. Furthermore, the cost of the electronic component can be reduced by unifying the substrate and the control unit.

  Further, according to the vehicle control apparatus of the first embodiment of the present invention, the engine control function and the anti-theft control function are integrated into one control unit, so that the electronic control of the internal combustion engine, which has been conventionally required, is performed. Since the communication line between the device and the anti-theft device can be eliminated and the delay time due to the communication can be eliminated, LF communication can be performed while reliably avoiding the timing at which ignition coil noise occurs.

  Note that the detection of the portable device does not require a long communication distance as in the case of remote operation of the portable device. Therefore, the area where the communication distance of the UHF communication can sufficiently surround the periphery of the vehicle, for example, the radius is substantial. The life of the battery 18 of the portable device 14 can be extended by reducing the amount of power used by the portable device 14 for UHF communication to the inside of the circular area of the vehicle length (about 2 meters). is there.

  Further, when the in-vehicle control device 1 recognizes that the vehicle is in a stable state (for example, constant speed running) based on the signal input from the vehicle state confirmation device 9, the LF signal 21 is transmitted from the in-vehicle control device 1. If the cycle is lengthened, the power consumption of the portable device 14 can be suppressed, and the life of the battery 18 can be extended.

Embodiment 2. FIG.
Next, a vehicle control apparatus according to Embodiment 2 of the present invention will be described. FIG. 1 is a configuration diagram showing the overall configuration of a vehicle control apparatus according to Embodiment 2 of the present invention, which is the same as that in Embodiment 1 described above. FIG. 4 is a flowchart for explaining the operation according to the embodiment of the present invention. In the following description, a description will be given mainly of parts different from the flowchart of FIG. The vehicle control apparatus according to the second embodiment of the present invention performs control in the first control mode when the engine speed is less than a predetermined value, and the second control mode when the engine speed is greater than or equal to a predetermined value. It is to be controlled by. Here, in the second embodiment, the first control mode is the same as the control mode in the first embodiment described above. It should be noted that the engine speed and the engine speed are conceptually equivalent and any of them may be used. In the following description, the engine speed will be used.

  1 and 4, in step S9 added between step S3 and step S4, whether or not the engine speed is less than a predetermined value (6000 [r / min] in the second embodiment). Determine whether. That is, the first control unit 4 of the in-vehicle control device 1 obtains the engine rotational speed information from the vehicle state confirmation device 9, and the engine speed is less than a predetermined value of 6000 [r / min] in a low speed range. If there is (Yes), the process proceeds to step S4 where control is performed in the first control mode, which is the same process as in the first embodiment, and the engine speed is 6000 [r / min], which is a predetermined value. If it is the above high rotation area (No), it will transfer to step S10.

  In step S10, the previous rotational speed of the engine is determined. That is, based on the rotational speed information obtained in the same manner as in step S9, if the previous engine speed is a low speed range (less than 6000 [r / min] in the second embodiment) (Yes). ) Since it is necessary to switch from the first control mode to the second control mode, the process proceeds to step S11. If the speed of the previous engine is a high speed range that is equal to or higher than a predetermined value (in this second embodiment, 6000 [r / min] or higher) (No), there is no need to switch the control mode. Transition.

  Here, the second control mode, which is a control mode when the engine speed is in a high speed range equal to or higher than a predetermined value, will be described. When LF communication is performed in the control mode in the case of the first embodiment, that is, when the engine is in the high speed range, that is, at the timing to avoid the noise of the ignition coil cutoff current, the time between time t3 and time t4 in FIG. The LF transmission time becomes longer than the time between time t3 and time t4, and there is a possibility of being affected by the noise of the cutoff current of the ignition coil. Therefore, in the second embodiment, the UHF signal of the portable device 14 that is not easily affected by the noise of the ignition coil cutoff current is transmitted at regular intervals in the high rotation range. This is referred to as a second control mode. In the second embodiment, the communication distance for remote control with the portable device 14 is designed to be several tens [meters]. By determining the detection of the portable device 14 using this second control mode, the buzzer will not sound and the alarm will not be displayed on the instrument panel.

  Step S11 is a step executed in response to the transition from the previous engine speed in the low engine speed range to the current engine speed in the high engine speed range. LF signal 21 carrying information indicating that it has shifted to the area is transmitted to portable device 14, and portable device 14 recognizes that it has shifted to the high rotation range, and also causes portable device 14 to periodically transmit as the second control mode. The start command is given. When the portable device 14 recognizes that the engine has shifted to the high rotation range, the portable device 14 proceeds to step S12.

  In step S12, the portable device 14 that has recognized that the engine has shifted to the high rotation range continues periodically at a predetermined time interval (for example, 500 [ms]), and sends the second authentication code to the UHF transmission circuit. The process transits to the second control mode in which the vehicle-mounted control device 1 is periodically transmitted through the UHF signal 22 emitted from 16. At this time, the in-vehicle control device 1 stops transmitting the LF signal 21 for detecting the portable device 14 until the rotational speed of the engine is less than a predetermined value (less than 6000 [r / min] in the second embodiment). To do. When the periodic transmission of the UHF signal 22 from the portable device 14 is started, the process proceeds to step S13.

  In step S13, the in-vehicle control device 1 receives the UHF signal 22 transmitted from the portable device 14, and determines whether the second authentication code received from the portable device 14 matches the first authentication code. . If it is determined in step S13 that the UHF signal 22 is received by the vehicle-mounted control device 1 and the first authentication code and the second authentication code match (Yes), the process proceeds to step S6, where the match is found. If not, the process proceeds to step S7.

  If it is determined in step S10 that the previous engine speed is in the high engine speed range (No), the engine speed will shift from the previous high engine speed area to the current high engine speed area. In this case, since the processes in steps S11 and S12 for switching the control are not necessary, the process directly proceeds to step S13.

  In step S10, it is determined that the previous engine speed is in the low engine speed range (Yes), and when the engine speed is shifted to the high engine speed area as described above, the engine speed is increased to the high engine speed area as described above. Since the vehicle-mounted control apparatus 1 stops transmitting the LF signal 21 when the transition is made, the portable device 14 cannot receive the LF signal 21 for a certain period. Therefore, the portable device 14 determines that the engine speed has shifted to the high engine speed range due to the inability to receive the LF signal 21 for a certain period, and continues periodically at predetermined time intervals to generate the second authentication code. May be shifted to the second control mode for transmitting to the in-vehicle control device 1 via the UHF signal 2 emitted from the UHF transmission circuit 16.

  In step S10, when it is determined that the previous engine speed is in the low engine speed range (Yes) and the engine speed is shifted to the high engine speed area, the accelerator speed is determined in addition to the engine speed. If the predetermined position of the accelerator position or the predetermined change amount of the accelerator position is detected based on the position sensor information, the vehicle-mounted control device 1 determines that the engine speed shifts to the high rotation range, and the high rotation speed LF signal 21 carrying information that it has shifted to a zone is transmitted to portable device 14, and portable device 14 periodically continues at a predetermined time interval to generate a second authentication code from UHF transmission circuit 16 UHF You may make it change to the 2nd control mode transmitted to the vehicle-mounted control apparatus 1 through the signal 22. FIG.

The vehicle control apparatus according to the first and second embodiments of the present invention described above embodies at least one of the following inventions. Within the scope of the invention, The embodiment can be modified or omitted as appropriate.
(1) A first control unit mounted on a vehicle and having a first transmission circuit, a first reception circuit, an engine control function for controlling the engine of the vehicle, and an anti-theft control function for the vehicle; An in-vehicle control device having a first storage circuit storing one authentication code;
A portable device carried by the driver or passenger of the vehicle and having a second transmission circuit, a second reception circuit, a second storage circuit storing a second authentication code, and a second control unit. Machine,
A vehicle control device comprising:
The second control unit in the portable device receives the authentication code request signal transmitted from the first transmission circuit of the in-vehicle control device by the second reception circuit, and then stores the second storage unit. A second authentication code stored in a circuit is configured to be transmitted to the in-vehicle control device by the second transmission circuit;
The first transmission circuit in the in-vehicle control device is configured to transmit the authentication code request signal using a frequency belonging to a long wave band,
The second transmission circuit in the portable device is configured to transmit the second authentication code using a frequency belonging to a frequency band higher than a frequency belonging to the long wave band,
When the first control unit in the in-vehicle control device receives the second authentication code transmitted from the portable device by the first receiving circuit, the received second authentication code is It is determined whether or not the first authentication code stored in the first storage circuit matches , and predetermined after an ignition spark is generated in the ignition plug of the engine based on the terminal voltage of the ignition coil older than time, and the transmission terminal voltage of the spark plug is the authentication code request signal by Uni the first that sends when in voltage difference within a predetermined range with respect to the onboard battery voltage to the vehicle Configured to control the circuit,
A control apparatus for a vehicle.
According to the present invention, it is possible to reduce the influence of noise on LF communication by blocking the primary side current of the ignition coil, and it is possible to prevent a buzzer from ringing and a warning from being displayed on the instrument panel. There is an effect.

(2) a first control unit mounted on a vehicle and having a first transmission circuit, a first reception circuit, an engine control function for controlling the engine of the vehicle, and an antitheft control function for the vehicle; An in-vehicle control device having a first storage circuit storing one authentication code;
A portable device carried by the driver or passenger of the vehicle and having a second transmission circuit, a second reception circuit, a second storage circuit storing a second authentication code, and a second control unit. Machine,
A vehicle control device comprising:
A first control mode is executed when the engine speed is less than a predetermined value, and a second control mode is executed when the engine speed is greater than or equal to a predetermined value;
The first control mode is:
Wherein in the first control unit to the vehicle control device, said relative timing of generating an ignition spark in the spark plug of the engine so as shifting the timing of transmitting the authentication code request signal first transmission circuit When the second control unit in the portable device receives the authentication code request signal transmitted from the first transmission circuit of the in-vehicle control device by the second reception circuit, A control mode in which the second authentication code stored in the second storage circuit is transmitted to the in-vehicle control device by the second transmission circuit;
The second control mode is:
The first control unit in the in-vehicle control device transmits information indicating that the engine speed is a predetermined value or more together with the authentication code request signal to the portable device, and then the engine speed is The first transmission circuit is controlled to stop transmission of the authentication code request signal until the predetermined value is less than the predetermined value, and the second control unit in the portable device is configured so that the second reception circuit is Upon receiving the authentication code request signal and recognizing that the engine speed is greater than or equal to the predetermined value, the in-vehicle control device stores the second authentication code stored in the second storage circuit at predetermined time intervals. A control mode for controlling the second transmission circuit so as to continue transmission to
The first transmission circuit in the in-vehicle control device is configured to transmit the authentication code request signal using a frequency belonging to a long wave band,
The second transmission circuit in the portable device is configured to transmit the second authentication code using a frequency belonging to a frequency band higher than a frequency belonging to the long wave band,
When the first control unit in the in-vehicle control device receives the second authentication code transmitted from the portable device by the first receiving circuit, the received second authentication code is A determination function for determining whether or not the first authentication code stored in the first storage circuit matches;
A control apparatus for a vehicle.
According to the present invention, it is possible to detect the fall of the portable device at the time of high engine rotation that transmission is not completed within the ignition cycle, and the buzzer sounds silently even at high engine rotation. There is an effect that alarm is not displayed on the instrument panel.

(3) a first control unit mounted on a vehicle and having a first transmission circuit, a first reception circuit, an engine control function for controlling the engine of the vehicle, and an antitheft control function for the vehicle; An in-vehicle control device having a first storage circuit storing one authentication code;
A portable device carried by the driver or passenger of the vehicle and having a second transmission circuit, a second reception circuit, a second storage circuit storing a second authentication code, and a second control unit. Machine,
A vehicle control device comprising:
A first control mode is executed when the engine speed is less than a predetermined value, and a second control mode is executed when the engine speed is greater than or equal to a predetermined value;
The first control mode is:
Wherein in the first control unit to the vehicle control device, said relative timing of generating an ignition spark in the spark plug of the engine so as shifting the timing of transmitting the authentication code request signal first transmission circuit When the second control unit in the portable device receives the authentication code request signal transmitted from the first transmission circuit of the in-vehicle control device by the second reception circuit, A control mode in which the second authentication code stored in the second storage circuit is transmitted to the in-vehicle control device by the second transmission circuit;
The second control mode is:
If the second control unit in the portable device does not receive the authentication code request signal for a predetermined period after receiving the authentication code request signal by the second receiving circuit, the engine speed is Controlling the second transmission circuit to continue to transmit the second authentication code stored in the second storage circuit to the in-vehicle control device at a predetermined time interval by determining that the predetermined value or more has been reached, A control mode in which the first control unit in the in-vehicle control device controls the first transmission circuit to stop the transmission of the authentication code request signal until the rotational speed of the engine becomes less than the predetermined value. And
The first transmission circuit in the in-vehicle control device is configured to transmit the authentication code request signal using a frequency belonging to a long wave band,
The second transmission circuit in the portable device is configured to transmit the second authentication code using a frequency belonging to a frequency band higher than a frequency belonging to the long wave band,
When the first control unit in the in-vehicle control device receives the second authentication code transmitted from the portable device by the first receiving circuit, the received second authentication code is A determination function for determining whether or not the first authentication code stored in the first storage circuit matches;
A control apparatus for a vehicle.
According to the present invention, it is possible to detect the fall of the portable device at the time of high engine rotation that transmission is not completed within the ignition cycle, and the buzzer sounds silently even at high engine rotation. There is an effect that alarm is not displayed on the instrument panel.

(4) When the rotational speed of the engine shifts from a state above the predetermined value to a state below the predetermined value,
The first control unit in the in-vehicle control device transmits information indicating that the engine speed has shifted to a state below a predetermined value together with the authentication code request signal to the portable device,
When the second control unit in the portable device recognizes that the second reception circuit receives the authentication code request signal and the engine speed is less than the predetermined value, the second control unit The operation of continuously transmitting the authentication code to the in-vehicle control device at a predetermined time interval is stopped, and the operation in the second control mode is switched to the operation in the first control mode. The vehicle control device according to (2) or (3) above.
According to the present invention, the first control mode and the second control mode can be switched smoothly according to the engine speed.

(5) At least the first transmission circuit, the first reception circuit, the first storage circuit, and the first control unit are mounted on the same substrate.
The vehicle control device according to claim 1, wherein the vehicle control device is a vehicle control device.
According to the present invention, the in-vehicle control device can be configured compactly.

(6) The first control unit in the in-vehicle control device includes at least the first transmission circuit, the first reception circuit, the first storage circuit, an input circuit for controlling the engine, and Has a function to control the output circuit,
The vehicle control device according to any one of (1) to (5) above, wherein
According to this invention, a vehicle-mounted control apparatus can be reduced in size.

(7) The communicable distance between the in-vehicle control device and the portable device is within the length of the vehicle.
The vehicle control device according to any one of (1) to (6) above, wherein:

(8) The vehicle-mounted control device increases a transmission cycle of the authentication code request signal when the vehicle is traveling at a constant speed or stopped.
The vehicle control device according to any one of (1) to (7), characterized in that:
According to the present invention, when it is recognized that the vehicle is in a stable running state, there is an effect that the battery consumption of the portable device can be suppressed to be small by increasing the transmission period of the LF signal from the in-vehicle control device.

  The present invention is applicable not only to motorcycles but also to motorbikes, general automobiles, riding agricultural machines, riding construction machines, or ships using power.

DESCRIPTION OF SYMBOLS 1 Vehicle-mounted control apparatus, 2 Battery, 3 Power supply circuit, 4 1st control part, 5 1st memory circuit, 6 LF transmission circuit, 7 UHF reception circuit, 31 Battery output voltage detection circuit, 32 1st interface circuit, 33 second interface circuit, 34 third interface circuit, 35 ignition coil terminal voltage detection circuit, 36 switch element, 37 fourth interface circuit, 38 fifth interface circuit, 8 start switch, 9 vehicle condition confirmation device, DESCRIPTION OF SYMBOLS 10 Warning device, 11 Ignition coil, 12 Injector, 13 Fuel pump, 14 Portable machine, 15 LF receiving circuit, 16 UHF transmission circuit, 17 2nd control part, 18 Battery of portable machine, 19 2nd memory circuit, 20 Time elapsed confirmation device

Claims (8)

A first control unit mounted on a vehicle and having a first transmission circuit, a first reception circuit, an engine control function for controlling the engine of the vehicle, and an anti-theft control function for the vehicle, and a first authentication A vehicle-mounted control device having a first storage circuit storing a code;
A portable device carried by the driver or passenger of the vehicle and having a second transmission circuit, a second reception circuit, a second storage circuit storing a second authentication code, and a second control unit. Machine,
A vehicle control device comprising:
The second control unit in the portable device receives the authentication code request signal transmitted from the first transmission circuit of the in-vehicle control device by the second reception circuit, and then stores the second storage unit. A second authentication code stored in a circuit is configured to be transmitted to the in-vehicle control device by the second transmission circuit;
The first transmission circuit in the in-vehicle control device is configured to transmit the authentication code request signal using a frequency belonging to a long wave band,
The second transmission circuit in the portable device is configured to transmit the second authentication code using a frequency belonging to a frequency band higher than a frequency belonging to the long wave band,
When the first control unit in the in-vehicle control device receives the second authentication code transmitted from the portable device by the first receiving circuit, the received second authentication code is It is determined whether or not the first authentication code stored in the first storage circuit matches , and predetermined after an ignition spark is generated in the ignition plug of the engine based on the terminal voltage of the ignition coil older than time, and the transmission terminal voltage of the spark plug is the authentication code request signal by Uni the first that sends when in voltage difference within a predetermined range with respect to the onboard battery voltage to the vehicle Configured to control the circuit,
A control apparatus for a vehicle. A first control unit mounted on a vehicle and having a first transmission circuit, a first reception circuit, an engine control function for controlling the engine of the vehicle, and an anti-theft control function for the vehicle, and a first authentication A vehicle-mounted control device having a first storage circuit storing a code;
A portable device carried by the driver or passenger of the vehicle and having a second transmission circuit, a second reception circuit, a second storage circuit storing a second authentication code, and a second control unit. Machine,
A vehicle control device comprising:
A first control mode is executed when the engine speed is less than a predetermined value, and a second control mode is executed when the engine speed is greater than or equal to a predetermined value;
The first control mode is:
Wherein in the first control unit to the vehicle control device, said relative timing of generating an ignition spark in the spark plug of the engine so as shifting the timing of transmitting the authentication code request signal first transmission circuit When the second control unit in the portable device receives the authentication code request signal transmitted from the first transmission circuit of the in-vehicle control device by the second reception circuit, A control mode in which the second authentication code stored in the second storage circuit is transmitted to the in-vehicle control device by the second transmission circuit;
The second control mode is:
The first control unit in the in-vehicle control device transmits information indicating that the engine speed is a predetermined value or more together with the authentication code request signal to the portable device, and then the engine speed is The first transmission circuit is controlled to stop transmission of the authentication code request signal until the predetermined value is less than the predetermined value, and the second control unit in the portable device is configured so that the second reception circuit is Upon receiving the authentication code request signal and recognizing that the engine speed is greater than or equal to the predetermined value, the in-vehicle control device stores the second authentication code stored in the second storage circuit at predetermined time intervals. A control mode for controlling the second transmission circuit so as to continue transmission to
The first transmission circuit in the in-vehicle control device is configured to transmit the authentication code request signal using a frequency belonging to a long wave band,
The second transmission circuit in the portable device is configured to transmit the second authentication code using a frequency belonging to a frequency band higher than a frequency belonging to the long wave band,
When the first control unit in the in-vehicle control device receives the second authentication code transmitted from the portable device by the first receiving circuit, the received second authentication code is A determination function for determining whether or not the first authentication code stored in the first storage circuit matches;
A control apparatus for a vehicle. A first control unit mounted on a vehicle and having a first transmission circuit, a first reception circuit, an engine control function for controlling the engine of the vehicle, and an anti-theft control function for the vehicle, and a first authentication A vehicle-mounted control device having a first storage circuit storing a code;
A portable device carried by the driver or passenger of the vehicle and having a second transmission circuit, a second reception circuit, a second storage circuit storing a second authentication code, and a second control unit. Machine,
A vehicle control device comprising:
A first control mode is executed when the engine speed is less than a predetermined value, and a second control mode is executed when the engine speed is greater than or equal to a predetermined value;
The first control mode is:
Wherein in the first control unit to the vehicle control device, said relative timing of generating an ignition spark in the spark plug of the engine so as shifting the timing of transmitting the authentication code request signal first transmission circuit When the second control unit in the portable device receives the authentication code request signal transmitted from the first transmission circuit of the in-vehicle control device by the second reception circuit, A control mode in which the second authentication code stored in the second storage circuit is transmitted to the in-vehicle control device by the second transmission circuit;
The second control mode is:
If the second control unit in the portable device does not receive the authentication code request signal for a predetermined period after receiving the authentication code request signal by the second receiving circuit, the engine speed is Controlling the second transmission circuit to continue to transmit the second authentication code stored in the second storage circuit to the in-vehicle control device at a predetermined time interval by determining that the predetermined value or more has been reached, A control mode in which the first control unit in the in-vehicle control device controls the first transmission circuit to stop the transmission of the authentication code request signal until the rotational speed of the engine becomes less than the predetermined value. And
The first transmission circuit in the in-vehicle control device is configured to transmit the authentication code request signal using a frequency belonging to a long wave band,
The second transmission circuit in the portable device is configured to transmit the second authentication code using a frequency belonging to a frequency band higher than a frequency belonging to the long wave band,
When the first control unit in the in-vehicle control device receives the second authentication code transmitted from the portable device by the first receiving circuit, the received second authentication code is A determination function for determining whether or not the first authentication code stored in the first storage circuit matches;
A control apparatus for a vehicle. When the engine speed has shifted from a state above the predetermined value to a state below the predetermined value,
The first control unit in the in-vehicle control device transmits information indicating that the engine speed has shifted to a state below a predetermined value together with the authentication code request signal to the portable device,
When the second control unit in the portable device recognizes that the second reception circuit receives the authentication code request signal and the engine speed is less than the predetermined value, the second control unit The operation of continuously transmitting the authentication code to the in-vehicle control device at a predetermined time interval is stopped, and the operation in the second control mode is switched to the operation in the first control mode. The vehicle control device according to claim 2 or 3. At least the first transmission circuit, the first reception circuit, the first storage circuit, and the first control unit are mounted on the same substrate.
The vehicle control device according to claim 1, wherein the vehicle control device is a vehicle control device. The first control unit in the in-vehicle control device includes at least the first transmission circuit, the first reception circuit, the first storage circuit, and an input circuit and an output circuit for controlling the engine. It has a function to control,
The vehicle control device according to any one of claims 1 to 5, wherein The communicable distance between the in-vehicle control device and the portable device is within the length of the vehicle.
The vehicle control device according to claim 1, wherein the vehicle control device is a vehicle control device. The in-vehicle control device increases the transmission cycle of the authentication code request signal when the vehicle is running at a constant speed or stopped.
The vehicle control device according to any one of claims 1 to 7, characterized in that

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