JPH084387A - Remote control device of load for car - Google Patents

Abstract

PURPOSE:To improve facility by equalizing the working distances of two load for a car when two load for the car is driven by continuously operating a control switch for a radio key. CONSTITUTION:An unlock switch 5 for a radio key is connected to a timer circuit 17 and a decision circuit 16 through an input circuit 15, an unlock signal is output until a timer time passes by the decision circuit 16 when the operation of the connection is continued, and a trunk open signal is outputted. A code- signal generating circuit 18 forms a code signal containing a corresponding code, and repeatedly outputs the code signal as a radio signal through a modulation circuit 19. When a receiver receives the unlock signal or the trunk open signal, the receiver drives a door lock mechanism or a trunk opener. Even when the state of reception is deteriorated and interrupted on its midway, both signals are received equally and the door lock mechanism or the trunk opener can be driven, thus improving facility and reliability.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle load adapted to drive a load mounted on a vehicle when an airborne signal from a transmitter is received by a vehicle-side receiver. The present invention relates to a remote control device.

[0002]

2. Description of the Related Art For example, some automobiles are configured so that door locking and unlocking operations can be remotely controlled using a radio wave key. When the operation switch is operated, the radio wave key is configured to output, as a radio wave signal, a lock signal for causing a lock operation or an unlock signal for performing an unlock operation by a transmission circuit provided inside. . On the automobile side, a receiving device for receiving a radio wave signal is provided. When the radio wave signal from the radio wave key is received, the lock signal or the unlock signal is identified and the door lock mechanism is driven to lock the door. It is configured to perform an operation or an unlock operation.

By the way, it has been considered to open the trunk of an automobile by utilizing such a remote control function using a radio wave key. In this case, if the radio key is provided with a separate operation switch, the whole size becomes large.Therefore, by performing signal processing based on the reception of the door lock signal or unlock signal as described below, the trunk open signal Is configured to output.

That is, for example, when the unlock switch of the radio wave key is operated for a certain time or longer, the control circuit of the receiving device on the automobile side causes the door lock mechanism to perform the unlocking operation when the unlock signal is received. After that, when the unlock signal is received over the determination time ts,
A trunk open signal is generated to drive the trunk opener.

FIG. 5 is an example showing the control contents. For example, when the unlock operation switch of the radio wave key is operated, the transmission circuit of the radio wave key repeatedly transmits the unlock signal, and the reception signal is received. In the device, when the unlock signal is received twice, for example, the unlock operation signal is output, and when the unlock signal is continuously received for a certain period of time or more thereafter, it is determined that the signal is a transmission signal indicating the opening operation of the trunk and the trunk is opened. It is configured to output an opener open signal.

Therefore, if the user continues to operate the unlock operation switch of the radio wave key for, for example, 2 seconds or more, he / she can unlock the door and then open the trunk. By operating the operation switch, it is possible to provide a plurality of remote operation functions without separately providing an operation switch on the radio wave key.

[0007]

However, with the conventional configuration as described above, for example, when the reception environment of the radio wave is bad and the reception is interrupted midway, the door unlock operation can be performed. However, there is a problem that the trunk opener cannot be driven.

That is, as shown in FIG. 6, although the door unlock signal from the radio wave key is repeatedly transmitted, the door unlock signal is continuously transmitted because the receiving environment of the receiving device is bad. In the case where reception is not possible, for example, after receiving the first two unlock signals as shown in the figure, once reception is interrupted and reception is resumed, the receiving device newly receives the unlock signal. As a result, when the door unlock signal is received twice again, the door locking mechanism is unlocked, and even if the user operates the unlock switch for a certain period of time or more, the receiving device side determines the determination time ts. The trunk open signal is not output because the unlock signal is not received until the time elapses.

In other words, in order to open the trunk opener, it is necessary to have a receiving environment in which the unlock signal can be continuously received repeatedly for the determination time ts or more. In other words, in this way, the receiving environment is changed. In the worst case, the working distance required for opening the trunk will be significantly shorter than the working distance required for the door unlocking operation. It will be placed in a situation where it cannot be performed, and the usability will deteriorate.

The present invention has been made in view of the above circumstances. An object of the present invention is to provide a load driving signal from a transmitter which cannot be continuously received due to a bad reception environment of radio waves. Provided is a remote control device for a load for a vehicle, in which a condition for receiving a second load drive signal transmitted subsequently to a load drive signal is set to be the same and working distances are made equal to allow remote control. Especially.

[0011]

SUMMARY OF THE INVENTION The present invention is for a vehicle adapted to drive a load mounted on a vehicle when an airborne signal from a transmitter is received by a vehicle-side receiver. It is intended for load remote control devices,
The transmitter is provided with an operation switch, and drive signal output means for switching to a state in which the first load drive signal is repeatedly output a predetermined number of times in the operating state of the operation switch and then the second load drive signal is repeatedly output. And receiving the airborne signal, the receiver starts a receiving operation, drives the first vehicle load when the first load driving signal is received, and drives the second load driving device. It is characterized in that the control means for driving the second vehicle load when the signal is received is provided.

Further, the drive signal output means in the transmitter starts operating when the operation switch is operated and counts a fixed time, and the first circuit when the operation switch is operated. A signal generating circuit that generates a load driving signal and generates the second load driving signal from the time when the timer circuit counts a certain time, and a first or second load driving signal supplied from the signal generating circuit. It is preferable to include a transmitting unit that outputs as an airborne signal.

Further, the control means in the receiver may be configured to drive both the first and second vehicle loads when the second load drive signal is received.

[0014]

According to the remote control device for a vehicle load of the present invention, when the operation switch is operated in the transmitter, the drive signal output means repeatedly outputs the first load drive signal a predetermined number of times. After that, the second load drive signal is repeatedly output. On the other hand, in the receiver, when the control means receives the aerial propagation signal, the reception operation is started and the first load drive signal is started. The first vehicle load is driven when the signal is received, and the second vehicle load is driven when the second load drive signal is received.

As a result, for example, when the receiving environment of the receiver is bad and the first load drive signal repeatedly transmitted from the transmitter cannot be partially received on the way, the second load drive signal following the second load drive signal can be received. When the load drive signal is received, the second vehicle load can be driven, and the first load drive signal and the second load drive signal transmitted in response to the operation of the operation switch of the transmitter are transmitted. Since the receiver can perform the same reception, the working distances of the remote operation of the first and second vehicle loads can be made equal, and the usability for the user can be improved.

According to another aspect of the remote control device for a vehicle load of the present invention, when the operation switch provided on the transmitter is operated, the timer circuit starts operating and the signal generating circuit outputs the first load drive signal. The first load drive signal is generated and transmitted as the air propagation signal repeatedly a predetermined number of times. After that, when the timer time of the timer circuit elapses, the signal generating circuit generates the second load drive signal. The second load driving signal is repeatedly transmitted by the transmitting means a predetermined number of times. With this, by operating a single operation switch while maintaining a simple structure, the first
And it becomes possible to transmit the first and second load drive signals for driving the second vehicle load.

According to the remote control device for a vehicle load of the present invention, even if the receiver cannot reliably receive the first load drive signal when the first load drive signal is transmitted from the transmitter, When the second load drive signal is received by the receiver at the time when the second load drive signal output following the first load drive signal is transmitted, the control means controls the first and second vehicles. Since the operating load is driven, the remote control function can be improved.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment in which the present invention is applied to a radio wave key device for an automobile will be described below with reference to FIGS. FIG. 2 shows the overall configuration. A radio wave key 1 as a transmitter has a key plate 2 that can be locked and unlocked by inserting and rotating it in a key cylinder, and a key that holds this key plate 2. It is composed of a grip 3. The key grip 3 is provided with a lock switch 4 and an unlock switch 5 which are operation switches for performing a lock operation or an unlock operation of the door. When these switches 4 and 5 are operated,
The transmission circuit 6 provided inside the key grip 3 (see FIG.
As described later, the lock signal and the unlock signal as the load drive signal are output as radio wave signals.

The receiving device 7 as a receiver provided on the automobile side includes an antenna 8 for receiving radio waves, a receiving circuit 9, and a control circuit 10 as a control means. The control circuit 10 includes a microcomputer, a ROM,
A drive circuit 12 for driving the door lock mechanism 11 and a drive circuit 14 for driving the trunk opener 13 are connected to an output terminal thereof having a RAM or the like. The door lock mechanism 11 locks and unlocks a door (not shown), and the trunk opener 13 opens a trunk (not shown).

As will be described later, the control circuit 10 receives the radio signal, which is demodulated into a code signal via the antenna 8 and the receiving circuit 9, and then receives the code signal from the door lock mechanism 11 or the trunk. The drive signal of the opener 13 is determined and the corresponding one is driven via the drive circuit 12 or 14.

FIG. 1 shows a block configuration of a transmission circuit 6 incorporated in the radio wave key 1, and the lock switch 4 and the unlock switch 5 described above are connected to an input circuit 15. The input circuit 15 outputs an operation signal according to which one of the lock switch 4 and the unlock switch 5 is operated, and its output terminal is connected to the determination circuit 16 and the timer circuit 17 as drive signal output means. ing.

The timer circuit 17 outputs an "H" level signal for a certain time and then outputs an "L" level signal during the period in which the signal is supplied from the input circuit 15. . The decision circuit 16 has a code signal generation circuit 18 as a signal generation circuit connected to its output terminal. When a lock signal is given from the input circuit 15, the decision circuit 16 gives this to the code signal generation circuit 18 and inputs it. In the state where the unlock signal is given from the circuit 15, the lock signal is output when the signal from the timer circuit 17 is at the “H” level, and when the signal from the timer circuit 17 changes to the “L” level, the trunk It is designed to output an open signal.

The code signal generation circuit 18 includes a judgment circuit 17
It outputs a code signal stored therein in response to a lock signal, an unlock signal or a trunk open signal given from the output terminal of which is connected to an antenna 20 through a modulation circuit 19. In this case, the code signal is generated including a code obtained by combining the code for driving the door lock mechanism 11 or the trunk opener 13 and the code unique to each vehicle. The modulation circuit 19 outputs a radio wave signal as a load drive signal to the outside via the antenna 20 according to the code signal given from the code signal generation circuit 18.

Next, the operation of this embodiment will be described with reference to FIGS. 3 and 4. First, a case where the radio wave reception environment is favorable will be described with reference to FIG. When the lock switch 4 or the unlock switch 5 of the radio wave key 1 is pressed, a lock signal or an unlock signal is output as a radio wave signal, but here, it is the first load drive signal in the present invention. An operation of outputting the unlock signal and subsequently outputting the trunk open signal which is the second load drive signal will be described.

That is, when the unlock switch 5 of the radio wave key 1 is pressed, in the transmission circuit 6, the input circuit 15 sends an "H" level signal to the unlock input terminal of the determination circuit 16 and the timer circuit 17. It will output. When the timer circuit 17 is supplied with the "H" level signal, the timer circuit 17 outputs the "H" level signal until the timer time TS elapses, and thereafter outputs the "L" level signal.

Further, the determination circuit 16 receives the "H" level signal from the unlock input terminal when the timer circuit 1
The unlock signal is output when the signal from 7 is at the "H" level, and the trunk open signal is output when the signal from the timer circuit 17 is at the "L" level. As a result, the code signal generation circuit 18 generates a code signal corresponding to the lock signal, the unlock signal, or the trunk open signal given from the determination circuit 16, outputs the code signal to the modulation circuit 19, and outputs the high-frequency radio signal from the antenna 20. Come to do. In this case, when the unlock switch 5 is continuously pressed (see FIG. 3).
(See (a)), in the transmission circuit 6, the timer circuit 17
After the unlock signal is repeatedly output for the timer time TS of (see (b) in the figure), the trunk open signal is repeatedly output (see (c) in the figure).

The receiving device 7 performs the receiving operation as follows. That is, when the radio wave signal is received by the antenna 8, it is demodulated in the receiving circuit 9 and input to the control circuit 10. In the control circuit 10, as shown in FIG. 3D, when the door unlock signal is received, the reception state of the door unlock signal is determined and the unlock signal is given to the door lock mechanism 11 via the drive circuit 12. (See (f) in the figure), the unlocking operation is performed.

Thereafter, when the trunk open signal is input (see (e) in the figure), the control circuit 10 judges the reception state of the trunk open signal when the trunk open signal is received, and determines the drive circuit. A trunk open signal is given to the trunk opener 13 via 14 (see (g) in the figure) to open the trunk.

Therefore, when the user unlocks the door and opens the trunk, the unlock switch 5 of the radio wave key 1 is continuously pressed and held so that the trunk is opened after the unlock signal. When a signal is output and is received by the vehicle-side receiver 7, the door lock mechanism 11 and the trunk opener 13 can be driven.

Next, when the receiving environment of the receiving device 7 on the automobile side is bad with respect to the radio signal output from the radio key 1, the following operation is performed. That is, when the unlock switch 5 of the radio wave key 1 is pressed in the same manner as described above,
As shown in FIGS. 4A, 4B, and 4C, the trunk open signal is repeatedly output after the door lock signal is repeatedly output.

On the other hand, in the receiving device 7, the control circuit 1
In the same manner as described above, 0 will drive the door lock mechanism 11 to perform the unlocking operation when the unlock signal is received (see (c) and (e) in the same figure), and subsequently, When the trunk open signal is received, the trunk opener 13 is driven to open the trunk. At this time, as shown in the figure, even if the reception of the trunk open signal is interrupted due to a radio wave reception failure (there is an unreceivable period), if the trunk open signal is received regardless of this, the trunk opener 13 is driven. Will be able to.

Although not shown, in the case where the reception environment of the radio wave is bad as described above, the receiving device 7 does not receive the unlock signal continuously twice, and then,
When the trunk open signal is received twice consecutively, the door lock mechanism 11 is caused to perform the unlocking operation and the trunk opener 13 is opened at the time of receiving the trunk open signal.

According to this embodiment, the radio wave key 1
The transmission circuit 6 of FIG. 1 transmits an unlock signal until the timer time TS of the timer circuit 17 elapses when the unlock switch 5 is pressed, and then the trunk circuit is provided without separately providing an operation switch. Since the open signal is transmitted, the door lock mechanism 11 or the trunk opener 13 can be driven according to the reception of the unlock signal or the trunk open signal on the receiving device 7 side. Even if the radio wave reception environment is poor, both radio signals can be received and operated in the same way, that is, the working distances of both can be made equal, improving the usability for the user and improving the reliability. Can be improved.

Further, according to the present embodiment, in the transmitting circuit 6, the timer circuit 17 and the judging circuit 16 switch the two kinds of radio signals and output them.
The configuration of the radio wave key 1 can be made simple and inexpensive.

According to this embodiment, even if the receiving device 7 does not receive the unlock signal, the door lock mechanism 11 is unlocked and the trunk opener is received at the time when the trunk open signal is received thereafter. 1
Since 3 can be driven, even if the reception environment of the radio wave is bad, it is possible to operate by assuming that the unlock signal is transmitted prior to the transmission of the trunk open signal, and that both are received. become able to.

The present invention is not limited to the above embodiment, but can be modified or expanded as follows. A counter may be provided in place of the timer circuit to count the number of times the door unlock signal (first load drive signal) is output, repeatedly output the predetermined number of times, and then repeatedly output the trunk open signal. The receiving device 7 may be configured to determine the reception state and output the drive signal when the lock signal, the unlock signal, or the trunk open signal is continuously received a plurality of times. As the aerial radio wave signal, an optical signal such as an infrared ray or a sound wave signal such as an ultrasonic wave can be used in addition to the radio wave. It can be used together with the lock signal instead of the unlock signal. A trunk open signal may be output after a predetermined time for both the unlock signal and the lock signal. A vehicle load other than the trunk opener may be driven.

[0037]

As is apparent from the above description, the remote control device for a vehicle load according to the present invention provides the following effects. That is, according to the remote control device for a vehicle load according to claim 1, the second load drive signal is repeatedly output to the transmitter after repeatedly outputting the first load drive signal a predetermined number of times in the operating state of the operation switch. Drive signal output means for switching to a state in which the first vehicle load is driven when the receiver receives the airborne signal and starts the receiving operation, and when the first load drive signal is received. Since the control means for driving the second vehicle load when the second load drive signal is received is provided, for example, when the receiving environment of the receiver is bad, the transmitter repeatedly transmits the signal. Even if the first load drive signal cannot be received partially on the way, the second vehicle load can be driven by receiving the subsequent second load drive signal. Operation The first load driving signal and the second load driving signal transmitted according to the operation of the switch can be equally received at the receiver side, so that the first and second vehicle loads can be received. This has the excellent effect of improving the usability of the user by making the working distances of the remote control equal to each other.

According to another aspect of the remote control device for a vehicle load of the present invention, the drive signal output means in the transmitter comprises a timer circuit, a signal generation circuit and a transmission means, and a signal is output according to the operation of the operation switch. The generator circuit outputs the first load drive signal until the timer circuit counts a certain time, and then outputs the second load drive signal,
Since the transmitting means transmits the signal as an aerial propagation signal, the first and second vehicle loads for driving the first and second vehicle loads can be operated by operating one operating switch while having a simple structure. The load drive signal can be transmitted.

According to another aspect of the vehicle load remote control device of the present invention, the control means in the receiver drives the first and second vehicle loads when the second load drive signal is received. Since the first load drive signal is transmitted from the transmitter, even if the receiver cannot reliably receive the first load drive signal, the transmitter outputs the first load drive signal subsequent to the first load drive signal. When the second load drive signal is received by the receiver at the time when the second load drive signal is transmitted, the control means can drive the first and second vehicle loads, and the remote control function is provided. It has an excellent effect that it can improve.

[Brief description of drawings]

FIG. 1 is a block diagram of a transmitter showing an embodiment of the present invention.

FIG. 2 is a block diagram of a receiver.

FIG. 3 is a time chart showing a signal output state of each part in a place with a good radio environment

FIG. 4 is a diagram corresponding to FIG. 3 in a place where the radio wave environment is poor.

FIG. 5 is a view corresponding to FIG. 3 showing a conventional example.

FIG. 6 is a view corresponding to FIG.

[Explanation of symbols]

1 is a radio wave key (transmitter), 4 is a lock switch, 5 is an unlock switch (operation switch), 6 is a transmission circuit, 7
Is a receiving device (receiver), 8 is an antenna, 9 is a receiving circuit,
Reference numeral 10 is a control circuit (control means), 11 is a door lock mechanism (first vehicle load), 12 is a drive circuit, 13 is a trunk opener (second vehicle load), 14 is a drive circuit, 1
5 is an input circuit, 16 is a determination circuit (drive signal output means),
Reference numeral 17 is a timer circuit (driving signal output means), 18 is a code signal generation circuit (signal generation circuit), 19 is a modulation circuit, 20
Is an antenna.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Toshihisa Toda No. 1 Noda, Toyoda, Oguchi-cho, Niwa-gun, Aichi Prefecture Tokai Rika Electric Co., Ltd.

Claims (3)

[Claims] 1. A remote control device for a vehicle load, which drives a load mounted on a vehicle in response to the reception of an airborne signal from a transmitter by a vehicle-side receiver. The transmitter includes an operation switch and a drive signal output unit that switches to a state in which the first load drive signal is repeatedly output a predetermined number of times in the operating state of the operation switch and then the second load drive signal is repeatedly output. The receiver starts the receiving operation when receiving the airborne signal, drives the first vehicle load when receiving the first load drive signal, and receives the second load drive signal. A remote control device for a vehicle load, comprising a control means for driving a second vehicle load at times. 2. The drive signal output means in the transmitter includes a timer circuit that starts operation when the operation switch is operated and counts a certain time, and the first circuit when the operation switch is operated. A signal generating circuit that generates a load driving signal and generates the second load driving signal from the time when the timer circuit counts a certain time, and a first or second load driving signal supplied from the signal generating circuit. 2. The remote control device for a vehicle load according to claim 1, wherein the remote control device includes a transmitting means for outputting as an airborne signal. 3. The control means in the receiver is configured to drive both the first and second vehicle loads when receiving the second load drive signal. The remote control device for a vehicle load according to claim 1 or 2.