JP4745821B2 - Anti-theft system, control method thereof, anti-theft device and in-vehicle device - Google Patents

Description

  The present invention relates to an anti-theft device for preventing theft of a vehicle, a control method thereof, an anti-theft device and an in-vehicle device.

Conventionally, there is an anti-theft device that prevents the vehicle from being stolen. This type of device operates independently without cooperation with in-vehicle devices such as in-vehicle audio devices such as immobilizers (electronic movement lock devices), making it impossible to start the engine or sounding a warning sound. (See, for example, Reference 1).
JP-A-2005-297908

In recent years, the theft of in-vehicle devices has increased, and an in-vehicle anti-theft device suitable for preventing the in-vehicle devices from being stolen is desired.
However, since the conventional in-vehicle audio equipment has only a function as a main unit for controlling the external device connected via the BUS communication line, even if the antitheft device is connected via the BUS communication line, The anti-theft device could not control the on-vehicle audio equipment. For this reason, even if the anti-theft device detects the theft, it has not been possible to take the anti-theft measure that issues a warning sound from a speaker connected to the in-vehicle acoustic device.
On the other hand, in order to prevent the in-vehicle audio equipment from being stolen, a method of mounting the anti-theft function on the in-vehicle audio equipment itself is conceivable. It becomes necessary to newly store a prevention program.

  SUMMARY OF THE INVENTION An object of the present invention is to provide an anti-theft system, a control method thereof, an anti-theft device, and an in-vehicle device capable of taking anti-theft measures using in-vehicle devices connected by a communication line.

The present invention is an anti-theft device mounted on a vehicle, and is configured separately from the anti-theft device, and is connected to a controlled device including the anti-theft device via a communication line and can control the controlled device. An in-vehicle device, and one of the in-vehicle device and the anti-theft device functions as a control device, and the other functions as a controlled device controlled by the control device. When the power is turned off, the in-vehicle device shifts to a sleep mode in which processing is not performed until there is an input from an external device, and the anti-theft device shifts to a theft monitoring mode for monitoring theft The anti-theft device detects an abnormality related to theft, and detects an abnormality related to theft during the transition to the theft monitoring mode when the ACC power is turned off. The in-vehicle device is caused to function as a controlled device controlled by the anti-theft device by transmitting a switching signal instructing the in-vehicle device to switch to the controlled mode. The vehicle-mounted device receives the switching signal and the anti-theft signal, and receives the switching signal during the transition to the sleep mode when the ACC power is turned off. If it is switched to the controlled mode that operates under the control of the anti-theft device, and receives the anti-theft signal in this controlled mode, it has a control means for executing processing according to the anti-theft signal It is characterized by.

  In this case, when the control unit of the in-vehicle device receives the switching signal, the function address of the in-vehicle device may be changed from the function address as the control device to the function address as the controlled device. When changing the function address of the in-vehicle device to the function address as the controlled device, the control unit of the in-vehicle device sends the function address from the function address as the controlled device to the function as the control device. You may instruct a change to an address. The control unit of the in-vehicle device may perform a process of issuing a warning sound when receiving a theft countermeasure signal in the controlled mode.

The present invention also provides an antitheft device mounted on a vehicle, and is configured separately from the antitheft device, and is connected to a controlled device including the antitheft device via a communication line to control the controlled device. An in-vehicle device that can be used, and one of the in-vehicle device and the antitheft device functions as a control device, and the other functions as a controlled device controlled by the control device. When the ACC power is turned off, the in-vehicle device shifts to a sleep mode in which processing is not performed until an input from an external device is received, and the anti-theft device shifts to a theft monitoring mode for monitoring theft. The anti-theft system control method is configured such that an anti- theft device mounted on a vehicle detects an abnormality related to theft during the transition to the anti- theft monitoring mode when the ACC power is turned off. A process of transmitting a switching signal for instructing switching to the controlled mode to the in-vehicle device when detected, and a process of transmitting a theft countermeasure signal for theft countermeasure, and a controlled device including the antitheft device via a communication line When the vehicle-mounted device that is connected and can control the controlled device receives the switching signal during the transition to the sleep mode when the ACC power is turned off, the controlled mode that operates under the control of the antitheft device And when the anti-theft signal is received in the controlled mode, a process of executing processing corresponding to the anti-theft signal is provided.

Further, the present invention is an anti-theft device that is mounted on a vehicle and can be controlled by an in- vehicle device, and one of the in-vehicle device and the anti-theft device functions as a control device, and the other is from the control device. When configured to function as a controlled device to be controlled and when the ACC power is turned off, the in-vehicle device shifts to a sleep mode in which processing is not performed until there is an input from an external device, and The anti-theft device is configured to shift to a theft monitoring mode for monitoring the theft , detects an abnormality relating to theft, and detects an abnormality relating to theft while shifting to the theft monitoring mode when the ACC power is turned off. The in-vehicle device is controlled by the anti-theft device by transmitting a switching signal instructing the in-vehicle device to switch to the controlled mode. And a transmission means for transmitting a theft countermeasure signal for a theft countermeasure.

The present invention also relates to an in-vehicle device that is connected to a controlled device including a theft prevention device mounted on a vehicle via a communication line and can control the controlled device. One of these functions as a control device, and the other functions as a controlled device controlled by the control device, and when the ACC power is turned off, the in-vehicle device receives an input from an external device. The anti-theft device is configured to shift to a theft monitoring mode for monitoring theft, and the mode is switched to the controlled mode transmitted from the anti-theft device. receiving means for receiving a switching signal and theft addressing signal for instructing, when receiving the switching signal during the transition to the sleep mode, dynamic under the control of the anti-theft device To switch to the control mode, when receiving the theft address signal when the controlled mode, and having a control means for executing processing corresponding to the theft cope signal.

  ADVANTAGE OF THE INVENTION According to this invention, a theft countermeasure can be aimed at using the vehicle equipment connected by the communication line.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a block diagram showing an anti-theft system 100 according to the present embodiment.
The anti-theft system 100 is mounted on a vehicle such as an automobile, detects an abnormality related to theft of the vehicle, and notifies the user and the surroundings of the abnormality. The audio device 1, the anti-theft device 2, the external connection device 3a, 3b and speakers 5a and 5b. The acoustic device 1, the anti-theft device 2 and the external connection devices 3a and 3b are each provided with communication circuits 1a, 2b, 3c and 3d, and are connected via a BUS communication connection 4 connected to these communication circuits 1a to 3d. In addition, speakers 5 a and 5 b are further connected to the acoustic device 1. The externally connected devices 3a and 3b are controlled devices that are controlled by the audio device 1 such as a CD changer or a DVD player.

As shown in FIG. 2, the acoustic device 1 includes an acoustic device-side microcomputer 6. The acoustic device-side microcomputer 6 functions as a computer serving as a control center of the acoustic device 1, and includes a CPU, a memory, and the like. The CPU executes various control programs stored in the memory, so that the communication circuit 1a is configured. When a signal is transmitted / received between the externally connected devices 3a and 3b and the anti-theft device 2 via an audio signal output from the externally connected devices 3a and 3b, an acoustic effect setting process and an amplification process are performed on the audio signal. The processed audio signal is output to the speakers 5a and 5b.
The antitheft device 2 includes an abnormality detection unit (abnormality detection means) 2a that detects an abnormality related to theft of the vehicle, and an antitheft device side microcomputer 7. The abnormality detection unit 2a includes, for example, a vibration sensor, and is configured to be able to detect abnormal vibration of the vehicle by the vibration sensor. The anti-theft device-side microcomputer 7 functions as a computer serving as a control center of the anti-theft device 2, and includes a CPU, a memory, and the like, and the CPU executes various control programs stored in the memory, so that the communication circuit While transmitting and receiving signals to and from the acoustic device 1 via 2b, the operation of the abnormality detection unit 2a is controlled.

  Each of the acoustic device 1, the anti-theft device 2, and the external connection devices 3a and 3b is set with a function address (individual ID on the communication format). Based on this function address, the master-slave relationship in control and the function specification, instruction range, and the like of each device connected to the BUS communication connection 4 are determined.

The function address will be described. The functional addresses include functional addresses “00”, “01”, “02”, and “03”. Among these, the function address “00” is defined as the main unit function address set in the management dedicated address device (control device), and the function address “01” is defined as the additional device function address set in the additional device such as the CD changer. Define the function address “02” as a slave function address set to the subordinate machine, and define the function address “03” as an alternative function address set to the device that released the “00” function. Yes. Each device to which the function addresses “01”, “02”, and “03” are set is controlled by a management-dedicated address device.
In this antitheft system 100, the main unit function address “00” is set in the audio device 1, the follower function address “02” is set in the antitheft device 2, and the additional device function address “01” is set in the externally connected devices 3a and 3b. "Is set as normal mode. In this normal mode, a playback instruction or the like is given from the audio device 1 in which the main unit function address “00” is set to the externally connected devices 3a and 3b such as a CD changer in which the additional device function address “01” is set. It is possible to control the anti-theft device 2 to which the slave device function address “02” is set from the audio equipment 1.

  Thereby, in the normal mode, the acoustic device 1 controls the operations of the externally connected devices 3 a and 3 b and the antitheft device 2 connected to the BUS communication connection 4. In this case, the externally connected devices 3a and 3b play back a CD, a DVD, or the like under the control of the audio device 1, and return a response to the instruction from the audio device 1 or an input request to the audio device 1. The anti-theft device 2 starts or stops the abnormality detection process under the control of the audio device 1 and returns a response to the instruction from the audio device 1 to the audio device 1.

In this embodiment, the acoustic device-side microcomputer 6 of the acoustic device 1 monitors the presence or absence of power supply from the vehicle to the acoustic device 1 (hereinafter referred to as ON / OFF of ACC (accessory power supply)), and the ACC Is switched to OFF, the antitheft system 100 is shifted to the theft mode. When the anti-theft system 100 shifts to the anti-theft mode, the audio device 1 is first shifted to a sleep mode where no processing is performed until an input is received from the anti-theft device 2, and the anti-theft device 2 is monitored for theft. Switch to theft monitoring mode. When the anti-theft device 2 detects the theft, the audio device 1 is shifted to an anti-theft mode that operates under the control of the anti-theft device 2 and the anti-theft device 2 controls the audio device 1. Switch to prevention mode.
Hereinafter, the anti-theft mode of the audio device 1 and the anti-theft mode of the anti-theft device 2 are distinguished from the controlled mode in that the anti-theft mode of the audio device 1 is controlled by the anti-theft device 2 in order to make it easy to distinguish between them. The anti-theft mode of the anti-theft device 2 is expressed as a control mode in terms of controlling the audio device 1.

Next, the operation of the audio device 1 when the anti-theft system 100 shifts to the theft mode, that is, when the ACC is switched off will be described in detail. FIG. 3 is a flowchart showing the operation of the acoustic device 1 in this case.
The acoustic device-side microcomputer 6 of the acoustic device 1 first issues a main machine function address “00” to the acoustic device 1 (step S1). In this case, the acoustic device side microcomputer 6 determines whether or not the acoustic device 1 is in the controlled mode. If the controlled device is in the controlled mode, the controlled mode is forcibly canceled and the main unit function address “00” is set. Issue.

Next, the acoustic device side microcomputer 6 determines whether or not the antitheft device 2 is connected via the BUS communication connection 4 (step S2). If it is determined that the antitheft device 2 is not connected (step S2: No), the audio equipment side microcomputer 6 ends the process without shifting to the controlled mode.
On the other hand, when it is determined in step S2 that the anti-theft device 2 is connected (step S2: Yes), the audio equipment side microcomputer 6 transmits an anti-theft instruction to the anti-theft device 2 (step S3). In this case, the anti-theft device 2 that has received the anti-theft instruction shifts to the anti-theft monitoring mode for monitoring the theft. More specifically, the anti-theft microcomputer 7 operates the abnormality detection unit 2a to detect the abnormality detection unit. Wait for signal input from 2a.

Next, the audio equipment side microcomputer 6 waits for the reception of the theft interrupt from the anti-theft device 2 (step S4). If no theft interrupt is received during the predetermined standby period, the process ends. When the theft interrupt is received, it is determined whether or not the theft interrupt is permitted (step S5).
The anti-theft interrupt is transmitted when the anti-theft device 2 detects an abnormality related to the anti-theft, and is a switching signal for instructing switching to a controlled mode that operates under the control of the anti-theft device 2. Is included.

The sound device side microcomputer 6 proceeds to the processing of step 3 when the theft interrupt is not permitted, while when the theft interrupt is permitted, the function address of the sound device 1 is set to the alternative function address “03” and the theft is also performed. An instruction to replace the function address with the main machine function address “00” is transmitted to the prevention device 2 (step S6). Accordingly, the main unit function address “00” of the audio equipment 1 is switched to the alternative function address “03”, and the function address of the antitheft device 2 is switched from the function address in the normal mode to the main unit function address “00”.
As a result, the acoustic device 1 shifts to a controlled mode that can operate under the control of the anti-theft device 2, and the anti-theft device 2 shifts to a control mode that can control the acoustic device 1.
In addition, the acoustic device side microcomputer 6 sends a response from the antitheft device 2 (for example, main function address “00” of the antitheft device 2) to confirm whether or not the antitheft device 2 has shifted to the control mode. When waiting (step S7) and receiving a response, the process is terminated and the controlled mode is held. As a result, when the anti-theft signal that instructs the alarm device 1 to issue a warning sound is transmitted from the anti-theft device 2, the audio device 1 issues an alarm sound via the speakers 5a and 5b.
On the other hand, when a response is not received, the audio equipment side microcomputer 6 transfers to the process of step 1, and performs the transfer process to the controlled mode which passed the process of step S1-step S7 again.

Next, in the theft prevention system 100, the theft mode is canceled and the normal mode is entered. Hereinafter, the operation of the audio device 1 when shifting to the normal mode will be described in detail. FIG. 4 is a flowchart showing the operation of the acoustic device 1 in this case.
First, the acoustic device-side microcomputer 6 issues an alternative function address “03” to the acoustic device 1 (step S11).

Next, the audio equipment-side microcomputer 6 waits for reception of a control mode release instruction interrupt from the anti-theft device 2 (step S12), and if no release instruction interrupt is received during a predetermined standby period, the processing is performed. On the other hand, when a release instruction interrupt is received, it is determined whether or not this interrupt is permitted (step S13).
Here, this cancellation instruction interrupt is transmitted when the anti-theft device 2 cancels the control mode, and includes a switching signal that instructs switching to the normal mode that operates under the control of the audio equipment 1. Yes.

If the cancellation instruction interrupt is not permitted, the audio equipment side microcomputer 6 proceeds to the process of step S11. On the other hand, if the cancellation instruction interrupt is permitted, the audio equipment side microcomputer 6 confirms whether or not the antitheft device 2 has shifted to the theft monitoring mode. Therefore, a response from the anti-theft device 2 (for example, a response of the slave device function address “02” of the anti-theft device 2) is waited (step S14), and when the response is received, the function address of the acoustic device 1 is set to “00”. The process is replaced and the process is terminated, and the process shifts to the normal mode.
On the other hand, when a response is not received, the audio equipment side microcomputer 6 transfers to the process of step S11, and performs the transfer process to the normal mode which passed through the process of step S11-step S14 again.

FIG. 5 shows the operating state of the acoustic device 1 and the antitheft device 2 in the main operating state of the vehicle on which the antitheft system 100 is mounted.
The main operation states of the vehicle equipped with the anti-theft system 100 are the operation state m1 when the engine is stopped, the engine start / ACC-ON operation state m2, the power-on operation state m3, and the audio equipment 1 is operating. There are eight operation states: an operation state m4, a power-off operation state m5, an engine stop / ACC-OFF operation state m6, a theft operation state m7, and a theft release operation state m8.
In the operation state m1 when the engine is stopped, the acoustic device 1 is in a sleep operation state (sleep mode), and performs a clock operation or power-on monitoring. At this time, the anti-theft device 2 is in the anti-theft operation state (theft monitoring mode), performs anti-theft monitoring, and the anti-theft device 2 is activated by a trigger by the abnormality detection unit (sensor) 2a.
In the engine start / ACC-ON operation state m2, the acoustic device 1 is in a standby operation state (normal mode), detects ACC-ON, and turns on an illumination lamp or the like if necessary. At this time, the antitheft device 2 is released from the antitheft monitoring mode and is in a standby operation state (normal mode).

  In the operating state m3 in which the power is turned on and the operating state m4 in which the audio device 1 is operating, the audio device 1 is in the normal operation state (normal mode), and the audio device 1 (set) is turned on and the audio is operated. It is in a state such as a mode and the presence / absence of the anti-theft device 2 is confirmed. At this time, the anti-theft device 2 is in a sleep operation state (normal mode) and is out of function.

In the power-off operation state m5, the acoustic device 1 is in a standby operation state (normal mode), detects power-off, turns on an illumination lamp or the like if necessary, and cancels the audio mode or the like. At this time, the antitheft device 2 is in the sleep operation state (normal mode), and the function stop is held.
In the engine stop / ACC-OFF operation state m6, the acoustic device 1 turns off the power and enters the sleep operation state (sleep mode). At this time, the antitheft device 2 is in a theft monitoring state (theft monitoring mode), performs theft monitoring, and the antitheft device 2 is activated by a trigger by the abnormality detection unit 2a.

In the operation state m7 during the theft, the acoustic device 1 shifts from the sleep mode to the controlled mode (theft prevention mode) and is in the passive operation state. Performs operations such as sound (alarm) reporting. At this time, the anti-theft device 2 shifts from the anti-theft monitoring mode to a control mode (the anti-theft mode) and performs operation control such as operation lock of each device and alarm alarm sound.
In the operation state m8 for releasing the theft, the audio device 1 shifts from the controlled mode (theft prevention mode) to the sleep mode and enters the sleep operation state, and the operation lock of the device and the alarm sound (alarm) is issued. Cancel the operation. At this time, the antitheft device 2 is in a theft monitoring state (theft monitoring mode), performs theft monitoring, and the antitheft device 2 is activated by a trigger by the abnormality detection unit 2a.

  According to the present embodiment, when the vehicle ACC is ON, the anti-theft system 100 operates in the normal mode, the main machine function address “00” is set in the audio equipment 1, and the auxiliary function address “ Since “02” is set, the audio device 1 can control the anti-theft device 2 and the function is stopped so that the anti-theft device 2 does not detect an abnormality related to the theft. When the ACC of the vehicle is switched off, the audio device 1 controls the anti-theft device 2 to the anti-theft monitoring mode. When the anti-theft device 2 detects an abnormality, the audio device 1 is notified to that effect, and the audio device 1 Instructs the anti-theft device 2 to change the address to the main unit function address “00” and replaces its own function address with the alternative function address “03”, so that the anti-theft device 2 can control the audio equipment 1 and The prevention device 2 can control the audio device 1 and notify the abnormality using the speakers 5a and 5b in the vehicle.

  The audio device 1 can be configured by changing the function address of the own device to the conventional audio device and adding software for instructing the address change to the anti-theft device 2. There is no need for additional hardware, and the amount of software to be added is small compared to those equipped with. Thereby, it is easy to construct the anti-theft system 100 using conventional audio equipment, and the anti-theft system 100 can be constructed only when the user needs an anti-theft function.

As mentioned above, although this invention was demonstrated based on one Embodiment, this invention is not limited to this. For example, although the acoustic device 1 is used in the above configuration, the present invention is not limited to this, and a car navigation device or the like may be used.
In the above configuration, the anti-theft system 100 issues a warning sound from the speakers 5a and 5b when a theft state is detected. However, the present invention is not limited to this. It may be configured to report to a communication means such as a telephone.

It is a block diagram which shows the functional structure of a theft prevention system. It is a block diagram which shows the audio equipment and antitheft device which were connected by BUS communication connection. It is a flowchart which shows operation | movement of the audio equipment when making a theft prevention system transfer from normal mode to theft mode. It is a flowchart which shows operation | movement of the audio equipment in the case of making a theft prevention system transfer from a theft mode to a normal mode. It is a figure which shows the operation state of the audio equipment and antitheft device in the main operation state of the vehicle carrying the antitheft system.

Explanation of symbols

1 Audio equipment (vehicle equipment)
1a Communication circuit (receiving means)
2 Anti-theft device 2a Abnormality detection unit (abnormality detection means)
2b Communication circuit (transmission means)
4 BUS communication connection (communication line)
7 Anti-theft microcomputer (control means)
100 anti-theft system

Claims (7)

An anti-theft device mounted on a vehicle, and an in-vehicle device configured separately from the anti-theft device, connected to a controlled device including the anti-theft device via a communication line, and capable of controlling the controlled device. Prepared,
Among the in-vehicle device and the antitheft device, either one functions as a control device and the other functions as a controlled device controlled from the control device,
When the ACC power is turned off, the in-vehicle device shifts to a sleep mode in which processing is not performed until an input from an external device is received, and the anti-theft device shifts to a theft monitoring mode for monitoring theft. With the configuration,
The anti-theft device includes an abnormality detecting means for detecting an abnormality related to theft, and switching to the controlled mode in the in-vehicle device when detecting an abnormality related to theft during the transition to the anti- theft monitoring mode when the ACC power is turned off. Transmitting the switching signal instructing the in- vehicle device as a controlled device controlled by the anti-theft device , and having a transmission means for transmitting the anti-theft signal for anti- theft,
The in-vehicle device receives the switching signal and the anti-theft signal, and when receiving the switching signal during the transition to the sleep mode when the ACC power is turned off, The anti-theft system characterized by comprising control means for executing processing corresponding to the anti-theft signal when the anti-theft signal is received in the controlled mode.   The control unit of the in-vehicle device, when receiving the switching signal, changes the function address of the in-vehicle device from a function address as the control device to a function address as the controlled device. Anti-theft system.   When changing the function address of the in-vehicle device to the function address as the controlled device, the control unit of the in-vehicle device sends the function address from the function address as the controlled device to the function as the control device. The anti-theft system according to claim 2, wherein a change to an address is instructed.   The anti-theft system according to any one of claims 1 to 3, wherein the control unit of the in-vehicle device performs a process of issuing a warning sound when receiving a theft countermeasure signal in the controlled mode. . An anti-theft device mounted on a vehicle, and an in-vehicle device configured separately from the anti-theft device, connected to a controlled device including the anti-theft device via a communication line, and capable of controlling the controlled device. And either one of the in-vehicle device and the anti-theft device functions as a control device, and the other functions as a controlled device controlled by the control device, and the ACC power is turned off. The in-vehicle device shifts to a sleep mode in which processing is not executed until there is an input from an external device, and the anti-theft device shifts to a theft monitoring mode for monitoring theft. A control method of a prevention system,
The anti-theft device mounted on the vehicle transmits a switching signal instructing the vehicle-mounted device to switch to the controlled mode when detecting an abnormality related to the theft during the transition to the anti- theft monitoring mode when the ACC power is turned off. Along with the process of sending anti-theft anti-theft signals,
When an in-vehicle device that is connected to a controlled device including the anti-theft device via a communication line and can control the controlled device receives the switching signal during the transition to the sleep mode when the ACC power is turned off Switching to a controlled mode that operates under the control of the anti-theft device, and when receiving the anti-theft signal in the controlled mode, a process of executing processing according to the anti-theft signal A control method of the anti-theft system characterized. In an anti-theft device that is mounted on a vehicle and can be controlled by an in-vehicle device,
Among the in-vehicle device and the antitheft device, either one functions as a control device and the other functions as a controlled device controlled from the control device,
When the ACC power is turned off, the in-vehicle device shifts to a sleep mode in which processing is not performed until an input from an external device is received, and the anti-theft device shifts to a theft monitoring mode for monitoring theft. With the configuration,
An abnormality detection means for detecting an abnormality relating to theft, and a switching signal for instructing the vehicle-mounted device to switch to the controlled mode when an abnormality relating to theft is detected during the transition to the theft monitoring mode when the ACC power is turned off. An anti-theft device comprising: a transmitting unit that transmits the anti-theft signal for anti-theft while making the in-vehicle device function as a controlled device controlled by the anti-theft device by transmitting. In an in-vehicle device that is connected to a controlled device including an anti-theft device mounted on a vehicle via a communication line and can control the controlled device,
Among the in-vehicle device and the antitheft device, either one functions as a control device and the other functions as a controlled device controlled from the control device,
When the ACC power is turned off, the in-vehicle device shifts to a sleep mode in which processing is not performed until an input from an external device is received, and the anti-theft device shifts to a theft monitoring mode for monitoring theft. With the configuration,
Receiving means for receiving a switching signal and an anti-theft countermeasure signal for instructing switching to the controlled mode transmitted from the anti-theft device; and when receiving the switching signal during the transition to the sleep mode, the anti-theft device An in-vehicle device characterized by comprising control means for switching to a controlled mode that operates under the control of the system and executing processing corresponding to the anti-theft signal when receiving the anti-theft signal in the controlled mode.

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