JP3373693B2 - Remote control device for vehicle load - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote control device for a vehicle load, which is provided with a transmitter capable of transmitting an operation signal corresponding to a plurality of vehicle loads.

[0002]

2. Description of the Related Art Conventionally, there is a radio wave key as this type of device. In this system, the door lock mechanism of the automobile can be locked and unlocked, or the engine can be started and stopped remotely by operating a radio wave key from a place remote from the automobile.

Thus, it is not necessary to insert and rotate the key in the door key cylinder each time in order to lock and unlock the door lock mechanism from the outside of the automobile, which is excellent in usability even in a dark environment. Even if you forget to lock after moving to a position away from the car, you can still lock from that location. Further, even when the engine of the automobile is started before the warm-up operation in a cold morning or the like, there is an advantage that the engine can be remotely controlled from the room without going to the automobile.

[0004]

However, in the above-described radio wave key, since the door lock mechanism is operated and the engine is started / stopped from a position away from the automobile, for example, the operation switch of the radio wave key is mistakenly operated. If the user touches, the user may be caused to perform an unintended operation.

Further, in such a case, for example, when a signal for a lock operation to the door lock mechanism or an operation signal for stopping the engine is transmitted, there is no problem because it operates on the safe side, but an operation signal is given for the unlock operation. If it is sent, the door lock mechanism will be unlocked, so in order to prevent such a situation, the user should always perform the locking operation when the user is far from the vehicle. You need to be careful.

The present invention has been made in view of the above circumstances, and an object of the present invention is to prevent a vehicle load from malfunctioning by an inadvertent operation of a transmission device, while ensuring reliable operation when necessary. To provide a remote control device.

[0007]

A remote control device for a vehicle load according to the present invention generates an operation signal corresponding to a plurality of vehicle loads by operating an operation switch and outputs the operation signal for an operation time of the operation switch. A transmission device that outputs as an airborne signal only for a transmission time according to, and when receiving an operation signal from the transmission device provided on the vehicle side, which one of the plurality of vehicle loads corresponds to the operation signal Receiving means for determining and receiving the reception time,
Storage means for storing the minimum reception time of the operation signal set for each of the plurality of vehicle loads; and when the reception time of the operation signal received by the reception means exceeds the minimum reception time. The present invention is characterized in that it is provided with a determination means for outputting a drive signal to a corresponding vehicle load (the invention of claim 1).

Further, the remote control device for a vehicle load according to the present invention generates an operation signal corresponding to a plurality of vehicle loads by operating the operation switch and transmits the operation signal according to the operation time of the operation switch. A transmitting device that outputs as an air propagation signal only for time, and when receiving an operation signal from the transmitting device that is provided on the vehicle side, determine which of the plurality of vehicle loads the operation signal corresponds to, Receiving means for detecting the receiving time and receiving strength, storage means for storing the minimum receiving time corresponding to the receiving strength of the operation signal set for each of the plurality of vehicle loads, and receiving means for receiving by the receiving means. When the reception time of the selected operation signal exceeds the minimum reception time with respect to the reception intensity at that time, the determination hand that outputs the drive signal to the corresponding vehicle load It may be constructed by providing the bets (the invention of claim 2).

Then, the minimum reception time value set corresponding to the plurality of vehicle loads can be set to be long when the reception intensity of the operation signal is small (the invention of claim 3).

[0010]

According to the means of the first aspect, when the vehicle load is to be driven by remote control, the operation switch of the transmitter is operated to output the operation signal of the corresponding vehicle load. Send. Upon receiving the operation signal, the receiving device determines which vehicle load the operation signal corresponds to, and detects the reception time of the operation signal. When the reception time of the received operation signal exceeds the minimum reception time set for the corresponding vehicle load, the determination means outputs the drive signal to the vehicle load.

Therefore, when an operation signal having a short reception time that does not exceed the minimum reception time is received, the corresponding vehicle load is not driven and the user inadvertently operates the transmitter. Even if it does, if it is a short time operation without intention to operate, the operation load transmitted by this will not operate the vehicle load, improving the usability and surely when driving it. You will be able to operate.

Further, by setting the minimum reception time according to the vehicle load in this way, by setting the minimum reception time long for the vehicle load that is difficult to operate by careless operation, It becomes possible to perform a safer and more reliable operation that prevents malfunction.

According to the second aspect of the invention, when the vehicle load is to be driven by remote control, the operation switch of the transmitter is operated to transmit the operation signal of the corresponding vehicle load. When receiving the operation signal, the receiving device determines which vehicle load the operation signal corresponds to, and detects the reception intensity and the reception time of the operation signal. The determination means outputs a drive signal to the vehicle load when the received intensity of the received operation signal exceeds the minimum reception time set for the vehicle load. As a result, the minimum reception time is set according to the reception intensity of the received operation signal. Therefore, if the conditions are set differently according to the type of vehicle load and the operation mode, careless It is possible to prevent the operation from operating on the side where the safety is impaired.

According to the third aspect of the invention, when the transmitter is used at a position distant from the receiver, the reception intensity of the operation signal when received by the receiver becomes small. In other words, when trying to drive and operate the vehicle load from a distance, it becomes possible to drive it when the user intentionally operates the operation switch for a certain period of time or more,
On the other hand, when operating from a close range of the vehicle, when the reception strength of the operation signal by the receiving device is strong, the minimum operation time will exceed the minimum operation time even if the operation time is short, so it will be possible to drive quickly. , The usability is improved.

[0015]

The first embodiment of the present invention applied to an automobile will be described below.
An embodiment of the above will be described with reference to FIGS. FIG. 1 shows an overall schematic block configuration. A portable transmission device 1 as a transmission means includes a door lock mechanism that is locked and unlocked at a position distant from an automobile, and an engine is started. Also, the transmission circuit 2 is provided inside for the purpose of performing a stop operation.
Operation switches 3 and 4 and a changeover switch 5 are provided on the front surface of the transmission device 1, and an operation signal is generated by the transmission circuit 2 in response to these operations and is an air propagation signal via an antenna 6. It is designed to be output as a radio signal.

In this case, the transmitter 1 has the operation switch 3
When only one is operated, a lock signal is generated, when only the operation switch 4 is operated, an unlock signal is generated, when the changeover switch 5 and the operation switch 3 are operated, an engine start signal is generated, and the changeover switch is further generated. When the control switch 5 and the operation switch 4 are operated, an engine stop signal is generated and transmitted.

Further, the transmission signal output from the transmission device 1 is added with an ID code set uniquely for each vehicle, and an operation signal for the door lock mechanism 7 and the engine 8 which are loads for the vehicle is added. Output is made during the time when the operation switches 3 and 4 are operated.

When the radio wave signal is received via the antenna 10, the receiving device 9 provided on the automobile side has a receiving circuit 11 as a receiving means for demodulating the radio wave signal and a level judgment for judging the signal strength of the received signal. It is composed of a circuit 12 and a control device 13 composed of a microcomputer, ROM, RAM and the like. In this case, the level determination circuit 12 is, for example, an IC for FM demodulation as a receiving circuit.
You may make it use the RSSI output built in.
The control device 13 also has a function as a determination unit and a storage unit.

The above-mentioned door lock mechanism 7 is connected to the control device 13 via the door lock control circuit 14, and can be locked or unlocked by a lock signal or an unlock signal from the control device 13. ing. Further, the engine 8 has an engine starting circuit 15
Is connected to the control device 13 via
A start or stop operation is performed by an engine start signal or an engine stop signal from the.

Next, the operation of this embodiment will be described with reference to the flowcharts of FIGS. 2 and 3. That is,
First, the minimum reception time set for each operation of the door lock mechanism 7 and the engine 8 which are the above-described vehicle loads will be described. This is set to be short, for example, when operating on the safe side and long when operating on the opposite side, so that the user performs a reliable operation by intentionally driving the corresponding load. It is set to operate only when. In this case, the minimum receiving time t1 to t4 is set such that the minimum receiving time t becomes a shorter time for each of engine start, stop, door unlock, and door lock (t1>t2>).
t3> t4).

Now, when a signal is received from the outside through the receiving circuit 11, the control device 13 executes the receiving processing routine shown in FIG. 2 to make a determination. That is, the control device 13 executes a signal receiving process (step S1) and determines whether or not the received signal includes a code signal (step S2). When the signal is the signal from the transmission device 1, the control device 13 determines “YE” in step S2.
S "is determined, the process proceeds to step S3, and the ID code included in the transmitted signal is compared and collated.

If the ID codes match, the control device 13 determines that the signal is a transmission signal for itself and proceeds to step S5 to execute an output determination routine to determine whether to perform an operation according to the operation signal. It comes to judge. This output determination routine has a flowchart shown in FIG. 3, and the control device 13 first determines that the received operation signal is either a start signal or a stop signal, or a lock signal,
It is determined which one of the unlock signals (step T1.
T4).

When the control device 13 determines which operation signal is received, whether the reception time of the reception signal at that time exceeds the minimum reception time t1 to t4 set for the operation signal. It is determined whether or not (step T5
~ T8), if "YES", the corresponding control signal is output (steps T9 to T12), and if "NO", the process directly returns to the reception processing routine.

As a result, when the control device 13 returns to step S6 of the reception processing routine, it determines whether or not there is an output signal. If "YES", the process proceeds to step S to issue an instruction corresponding to the output signal. It will be executed, and then it will return to the main program.

According to the first embodiment as described above, the minimum reception time is set according to the operation signal of the transmission signal from the transmission device 1, so that inadvertent operation due to an erroneous operation for a short time, etc. The operation signal that does not operate on the safe side can be prevented from being driven, and as a result, the operation signal can be driven only when the operation is reliably performed.

FIG. 4 and FIG. 5 show a second embodiment of the present invention, and the portions different from the first embodiment will be described below. In the second embodiment, the minimum reception time is set according to the reception intensity of the radio signal from the operating device 1, that is, the distance between the automobile and the operating device 1. In this case, the minimum reception time t as a condition for command execution of the operation signal is set as follows according to the signal reception intensity S at that time (see also FIG. 5).

[0027]

Now, the operation switches 3, 4, of the transmitter 1
When 5 is operated, a radio signal of the operation signal is output, but in the control device 13 that receives this, the reception intensity of the operation signal decreases as the distance from the transmission device 1 increases. When a signal is received from the outside via the receiving circuit 11, the control device 13 executes the reception processing routine shown in FIG. 4 to make a determination. That is, the control device 13 executes a signal receiving process (step P
1) It is determined whether the received signal includes a code signal (step P2). Then, when the code signal is included, the control device 13 starts the timer (step P3).

After that, the control device 13 continues the signal receiving operation (step P4) and when the code signal is no longer received (step P5) or when the code signal is repeatedly received for 1 second or more. In (step P6), the process moves to step P7 to stop the timer.

Then, the control device 13 compares and collates the ID code included in the received signal (step P8),
If the collation results match (step P9),
If "YES" is determined, the process proceeds to step P10, and "N
When it is determined to be "O", the program is terminated and returns to the main program. At this time,
A signal corresponding to the reception intensity S of the reception signal at that time is input to the control device 13 from the level determination circuit 12.

Now, the control device 13 determines that the reception time t of the reception signal at that time is 0.5 seconds or less, is larger than that and is 1.0 seconds or less, or is larger than 1.0 seconds. Whether or not it is sequentially determined in steps P10 and P11,
Whether or not the magnitude of the reception intensity S at that time is equal to or higher than the above-described level according to each time is determined in steps P12 and P1.
3, P14 will come to judge. That is, the control device 13 determines whether or not the values of the reception intensity S of the reception signal and the reception time t are in the area side indicated by the diagonal lines in FIG.
If "YES", the process proceeds to step P15 to execute the corresponding command.

According to the second embodiment as described above, when the reception intensity S is small, the minimum reception time t is set to be long,
When the reception intensity S is high, the minimum reception time is set to be short. Therefore, when operating the transmission device 1 at a long distance, it is necessary to operate it reliably for a long time. In this case, the operation switch is mistakenly operated. The operation does not occur even when 3 to 5 are operated, and when the transmitter 1 is operated in the vicinity of the automobile, the transmitter 1 can be driven in a short time, improving the safety against erroneous operation. It is possible to improve usability while aiming for

The present invention is not limited to the above embodiment, but can be modified or expanded as follows. The transmission radio wave output from the transmission device may be configured to transmit the transmission signal only for a time preset according to the operation time, in addition to the configuration for outputting only the time when the operation switch is turned on. The reception level and the minimum reception time may be set for each operation command. Also, the reception intensity S and the reception time t
The same purpose can be achieved by setting the value of the product of and.

[Brief description of drawings]

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

FIG. 2 is a flowchart of a reception processing routine.

FIG. 3 is a flowchart of an output determination routine

FIG. 4 is a view corresponding to FIG. 2 showing a second embodiment of the present invention.

FIG. 5 is a diagram showing the relationship between the reception intensity and the minimum reception time.

[Explanation of symbols]

1 is a transmitter, 2 is a transmitter circuit, 3 and 4 are operation switches,
5 is a changeover switch, 6 is an antenna, 7 is a door lock mechanism, 8 is an engine (vehicle load), 9 is a receiving device (vehicle load), 10 is an antenna, 11 is a receiving circuit (receiving means), and 12 is a level. A determination circuit, 13 is a control device (determination means, storage means), 14 is a door lock control circuit, and 15 is an engine starting circuit.

Continuation of the front page (56) Reference JP-A 64-66381 (JP, A) JP-A-3-70296 (JP, A) JP-A 63-11781 (JP, A) JP-A 5-153664 (JP , A) JP 7-109859 (JP, A) JP 3-171995 (JP, A) (58) Fields investigated (Int.Cl. ⁷ , DB name) H04Q 9/00-9/16 H03J 9/00-9/06 B60R 16/02 E05B 65/12

Claims (3)

(57) [Claims] 1. A transmission device that generates an operation signal corresponding to a plurality of vehicle loads by operating the operation switch and outputs the operation signal as an air propagation signal for a transmission time corresponding to the operation time of the operation switch. When receiving an operation signal from the transmission device, which is provided on the vehicle side, it is determined which of the plurality of vehicle loads the operation signal corresponds to, and a receiving unit that detects the reception time, Storage means for storing the minimum reception time of the operation signal set for each of the vehicle loads, and when the reception time of the operation signal received by the reception means exceeds the minimum reception time. A remote control device for a vehicle load, comprising: a determination unit that outputs a drive signal to the vehicle load. 2. A transmission device that generates an operation signal corresponding to a plurality of vehicle loads by operating the operation switch and outputs the operation signal as an airborne signal for a transmission time corresponding to the operation time of the operation switch. When receiving an operation signal from the transmitter provided on the vehicle side, it is determined which of the plurality of vehicle loads the operation signal corresponds to, and a receiving unit that detects the reception time and the reception intensity. Storage means for storing a minimum reception time according to the reception intensity of the operation signal set for each of the plurality of vehicle loads, and reception time of the operation signal received by the reception means at that time Load for vehicle, comprising: a determination unit that outputs a drive signal to the corresponding load when the minimum reception time for the intensity is exceeded. Remote control device. 3. The minimum reception time value set corresponding to the plurality of vehicle loads is set to have a relationship of increasing as the reception intensity of the operation signal decreases. Remote control device for vehicle loads.