JP3442914B2 - Vehicle remote control device - Google Patents

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a vehicle for driving and controlling a vehicle device based on receiving a radio signal transmitted from a transmitter. It relates to a remote control device. [0002] As this kind of vehicle remote control device, there is one having a function of locking or unlocking, for example, a door lock device by operating a transmitter. In this configuration, a receiver is provided in a vehicle, and the receiver receives a radio signal transmitted from a transmitter. The receiver is configured to lock or unlock the door lock device according to the received content when the identification code (ID code) included in the received signal matches the identification code registered in advance. ing. In addition, the above-mentioned remote control device for a vehicle uses a specific low-power radio, and a plurality of remote control devices, for example, one, are provided in order to prevent the channel occupancy from increasing.
It is configured to use all zero channels. Specifically, as shown in FIG. 4, the transmitter 1 is configured to use only one of the ten channels. That is, ten types of transmitters 1 corresponding to the first to tenth channels are prepared. The transmitter 1 is assigned an identification code for identifying itself from other transmitters 1, and the transmitter 1 is configured to transmit the identification code included in the radio signal. . On the other hand, the receiver 2 is configured to be able to use any of the ten channels, and a dip switch 3 is provided on a side surface of the main body of the receiver 2 as a changeover switch for switching channels. I have. FIG. 5 shows a schematic electrical configuration of the receiver 2. As shown in FIG. 5, a receiver 2 includes an amplifier 5 for amplifying a received signal received by an antenna 4, a local oscillation circuit 6 of a PLL system, a mixing circuit 7 for mixing a received signal and a local oscillation frequency signal, A demodulation circuit 8 for demodulating a signal from the mixing circuit 7 and an A / D converter for A / D converting the demodulated signal from the demodulation circuit 8
/ D conversion circuit 9, CPU 10 for receiving a signal from A / D conversion circuit 9, EEPROM 1 for storing an identification code
1, a power supply circuit 12 and the like. In this case, the local oscillation circuit 6 is configured to be able to generate ten types of local oscillation frequency signals respectively corresponding to ten channels, and according to the switching mode of the dip switch 3, of the ten types of local oscillation frequency signals. It is configured to generate one. Thus, by operating the DIP switch 3, any one of the ten channels
Set one channel and set the transmitter 1 for that channel
It is configured to be able to receive a radio signal from the Internet. Here, an operation of registering an identification code in the receiver 2 having the above-described configuration will be described with reference to FIG.
In this case, since the channel of the transmitter 1 to be registered is not known, the operator waits until the radio signal from the transmitter 1 can be received (that is, until the identification code can be registered).
In this configuration, the DIP switch 3 of the receiver 2 must be switched to perform an operation of sequentially switching channels. Specifically, first, DIP switch 3
To set the first channel (step S1 in FIG. 6). Subsequently, a specific operation for setting the registration mode is performed, and the apparatus enters the registration mode (step S2). Then, a radio signal is transmitted from the transmitter 1 by operating a switch of the transmitter 1 (step S3). Then, the receiver 2
Receives the radio signal from the transmitter 1 and writes the identification code included in the radio signal into the EEPROM 11 for storage (registration) (step S4). Here, if the channel set in the receiver 2 does not match the channel of the transmitter 1, the receiver 2 cannot receive the radio signal from the transmitter 1, so the identification code is set to the EEPROM.
11, that is, it cannot be registered. Next, the process proceeds to step S5, where it is determined whether or not the identification code has been registered. If the registration has not been completed, the process proceeds to "NO", returns to step S1, and operates the dip switch 3 to switch and set the second channel. Then, the same processing as the above-described registration processing is repeatedly executed. Hereinafter, until the identification code can be registered, the DIP switch 3 is operated to switch and set the next channel, and the registration process is repeated. However, in the above configuration, the registration operation must be repeatedly performed while operating the DIP switch 3 to switch and set the next channel until the identification code can be registered. There is a problem that the time required for the operation is long. In addition, since the DIP switch 3 can be operated even after the identification code is registered, the user may erroneously operate the DIP switch 3.
Is operated, the channel is switched, so that the radio signal transmitted from the transmitter 1 with the registered identification code may not be able to be received. Therefore, an object of the present invention is to facilitate the work of registering an identification code, shorten the time required for the registration work, and prevent erroneous switching of the set channel. A remote control device for a vehicle is provided. A vehicle remote control device according to the present invention controls the driving of a vehicle device based on receiving a radio signal transmitted from a transmitter. In a unit configured to be able to receive a signal on a plurality of channels, a storage unit for storing an identification code for identifying the transmitter and a registration mode for performing a process of writing the identification code in the storage unit are entered. Channel switching means for automatically switching the channel until a radio signal transmitted from the transmitter is received, and fixing the channel at the time of reception of the radio signal, an identification code contained a registration means for writing in the storage means, the registration hands
The stage stores channel data representing the channel at the time of reception.
To write in the storage means together with the identification code
It is characterized by its structure. According to the above means, when entering the registration mode, the channel is automatically switched until a radio signal transmitted from the transmitter is received, and when the radio signal is received, the channel at the time of reception is used. Become fixed. Then, the identification code included in the radio signal received in this manner is written and registered in the storage unit by the registration unit. In the case of the above configuration, since the operator does not need to perform the operation of switching channels, the operation of registering the identification code can be easily performed, and the time required for the registration operation can be reduced. Further, in the case of the above configuration, since the radio signal is fixed at the channel at the time of reception and the DIP switch for channel switching is not provided, unlike the conventional configuration, the set channel is erroneously switched. Can be reliably prevented. An embodiment of the present invention will be described below with reference to FIGS. 1 to 3. First, the remote control device for a vehicle according to the present embodiment uses a specific low-power radio, and its schematic electrical configuration is shown in FIG. In FIG. 1, the transmitter 21 is configured to use only one of the ten channels,
In this case, ten types corresponding to the first to tenth channels are prepared. The transmitter 21 is assigned an identification code for identifying itself from other transmitters 21. The transmitter 21 has a function of transmitting the identification code included in a radio signal. . The transmitter 21 is provided with various key switches 22 such as a door lock key switch and a door lock release key switch. On the other hand, a receiver 23 provided on the vehicle body side
Is, for example, a superheterodyne receiver,
It is configured so that any of the zero channels can be used (received). Specifically, as shown in FIG. 1, the receiver 23 is provided on the vehicle body side and amplifies the received signal received by the antenna 24, and selects ten types of local oscillation frequency signals for channel selection. Local oscillation circuit 26 of the PLL system which is generated in a random manner, a mixing circuit 27 for mixing the received signal and the local oscillation frequency signal,
A demodulation circuit 28 for demodulating the signal from
A / D conversion circuit 2 for A / D converting the demodulated signal from
9. CPU receiving signal from A / D conversion circuit 29
30, D / A for D / A conversion of a control signal from CPU 30
An A conversion circuit 31, an EEPROM 32 as storage means for storing an identification code, a power supply circuit 33, and the like are provided. Here, the local oscillation circuit 26 includes a CPU
In response to a control signal provided from D / A conversion circuit 31 from D / A conversion circuit 31, that is, one of ten types of local oscillation frequency signals respectively corresponding to ten channels in response to a switching command signal for commanding channel switching. PLL (phase
(locked loop) method. Thus, when the local oscillation circuit 26 is generating the local oscillation frequency signal corresponding to the n-th channel, the radio signal from the transmitter 21 of the n-th channel can be received. The demodulation circuit 28 demodulates the signal mixed by the mixing circuit 27, that is, the signal obtained by mixing the received signal and the local oscillation frequency signal, and converts the demodulated signal into an A / D signal.
It is configured to provide the data to the CPU 30 via the conversion circuit 29. At the same time, when the level of the demodulated signal (received signal) exceeds the set value, that is, when it detects that the radio signal transmitted from the transmitter 21 has been received, It is configured to output a high level carrier sense signal (see FIG. 3C). Further, the CPU 30 outputs a switching command signal (FIG. 3) until receiving a carrier sense signal from the demodulation circuit 28.
(B) is applied to the local oscillation circuit 26 every predetermined time, for example, every 10 ms. In this case, as shown in FIG. 3B, suppose that the registration mode is entered at time t1 and the switching command signal is a signal ch8 for commanding the eighth channel up to that time. Is changed to a signal ch9 for commanding the ninth channel, and thereafter, the switching command signal switches to ch10, ch1, ch2,... Every 10 ms. When the switching command signal is changed to ch6 and a carrier sense signal is received from the demodulation circuit 28, the CPU
Numeral 30 is configured to fix the switching command signal on ch6 (that is, the sixth channel). In this configuration, the local oscillation circuit 26, the demodulation circuit 28, and the CPU 30 constitute a channel switching unit 34. After receiving the carrier sense signal from the demodulation circuit 28, the CPU 30 writes an identification code contained in the received radio signal into the EEPROM 32 (see FIG. 3D). At this time, CPU3
0 is channel data representing a channel at the time of reception;
In the case of FIG. 3, the channel data indicating the sixth channel, for example, "ch6" is added to the EEPR together with the identification code.
It is configured to write to the OM32. When a switch signal from a door courtesy switch 35 for detecting the open / closed state of a vehicle door is given to the CPU 30, a key switch 36 for detecting whether or not an ignition key is inserted into a key cylinder of the ignition switch. Is provided. Further, the CPU 30 is configured to lock or unlock the door by giving a control signal corresponding to the content of the received signal to, for example, a controller (not shown) of a door lock device as a vehicle device. Further, the CPU 30 is configured to be able to drive and control other devices (not shown) of the vehicle according to the content of the received signal. Next, the operation of registering the identification code in the receiver 23 having the above-described configuration will be described with reference to the flowchart of FIG. In this case, first, the operator performs a specific operation for setting the registration mode, and enters the registration mode (step S101). Subsequently, the operator operates the key switch 22 of the transmitter 21 to register the identification code, and transmits a radio signal from the transmitter 21 (step S10).
2). Here, when entering the registration mode as described above, the CPU 30 (channel switching means 34) performs a process of automatically switching channels (step S1).
03). Specifically, as shown in FIGS. 3A and 3B, it is assumed that the registration mode has been entered at time t1, and that the switching instruction signal of the CPU 30 has been the signal ch8 for instructing the eighth channel until then. Then, at this point, the CP
The switching command signal of U30 is switched to the signal ch9 for commanding the ninth channel, and the signal can be received on the ninth channel. In this state, the transmitter 2 that transmitted the radio signal
When the first channel is not the ninth channel, the receiver 23 cannot receive the transmitted radio signal.
Do not output to 0. Therefore, 10 ms from the time t1.
Has elapsed, the process proceeds to "NO" in step S104, and the CPU 30 switches the switching instruction signal from the signal ch9 for instructing the ninth channel to the signal ch10 for instructing the tenth channel. As a result, reception on the tenth channel becomes possible. Thereafter, the CPU 30 automatically switches the switching command signal in order of ch1, ch2,... Every 10 ms until receiving the carrier sense signal from the demodulation circuit 28. In this case, assuming that the channel of the transmitter 21 is the sixth channel, when the switching command signal is switched to the signal ch6 for commanding the sixth channel, the carrier sense signal (high-level signal) is output from the demodulation circuit 28.
Is output. As a result, “Y
ES ", the CPU 30 performs a process of registering the identification code included in the radio signal (ie, the received signal) transmitted from the transmitter 21 and a process of fixing the switching command signal to ch6 (ie, the sixth channel). Execute (Step S1
05). In this case, when registering the identification code, the CPU 30 stores in the EEPROM the channel data indicating the sixth channel together with the identification code.
32 to be stored. Thereby, the registration work of the identification code is completed. After the registration of the identification code is completed, a normal reception operation is performed, that is, the radio signal transmitted from the transmitter 21 is received, and the identification code included in the received signal is EE.
When the ID code matches the identification code registered in the PROM 32, the apparatus controls the drive of the vehicle according to the received content (for example, locks or unlocks the door lock device). According to the present embodiment having such a configuration, when entering the registration mode, the channel is automatically switched by the channel switching means 34 and the radio signal transmitted from the transmitter 21 can be received. In addition, when a radio signal is received, it is configured to be fixed on the channel at the time of reception. Then, the identification code included in the radio signal thus received is transmitted to the EEP by the CPU 30.
It is configured to write and register in the ROM 32. This eliminates the need for the operator to manually switch channels, and thus the conventional configuration (see FIGS. 4 to 6).
As compared with the above, the work of registering the identification code can be easily executed, and the time required for the registration work can be shortened. Further, in the case of the above embodiment, since the radio signal is fixed at the channel at the time of reception and the DIP switch for channel switching is not provided, unlike the conventional configuration, the set channel is incorrectly set. Switching can be reliably prevented. In the above embodiment, the channel data representing the channel at the time of reception (ie, the channel of the transmitter 21) is transmitted along with the identification code of the transmitter 21 to the EEPRO.
Since the data is written in M32, when the power of the receiver 23 is turned off, when the power is turned on again, the channel is automatically set based on the channel data stored in the EEPROM 32. can do. Therefore, it is not necessary to perform a special operation for setting a channel when the power is turned on again. Further, in the above embodiment, a local oscillation circuit 26 for selectively generating a plurality of local oscillation frequency signals for channel selection, and a signal obtained by mixing a received signal and a local oscillation frequency signal are demodulated and received. A demodulation circuit 28 for outputting a detection signal when detecting that
And a CPU 30 for providing a local oscillator circuit 26 with a switching command signal for switching the local oscillation frequency signal until a detection signal is received from the CPU 30 at predetermined time intervals. Thus, the channel switching means 34 can be easily realized with a simple configuration. Further, in the above embodiment, when the channel is switched by the CPU 30, the switching is performed every 10 ms, so that the time required for one cycle of the channel is 110 ms. For this reason, after entering the registration mode, the radio signal is transmitted from the transmitter 21 for 0.11 seconds (110 m
s) If transmission is performed continuously, the registration of the identification code and the setting of the channel can be executed. In the above embodiment, as shown in FIG. 3, when a key switch of the transmitter 21 is operated, a radio signal is transmitted from the transmitter 21 for, for example, one second. Note that the predetermined time for channel switching is not limited to the above-mentioned time of 10 ms, but if the processing performance of the hardware configuration allows, the predetermined time is 10 ms.
The time may be appropriately set to be less than 10 ms or more than 10 ms. Further, the time for transmitting the radio signal from the transmitter 21 is not limited to the above-mentioned one second, and may be appropriately set to a time less than one second or more than one second. Further, in the above embodiment, the storage means is an EEPROM 3 which is a nonvolatile memory.
2, but may be constituted by a RAM with a backup function. As is apparent from the above description, the present invention automatically switches channels until a radio signal transmitted from a transmitter is received when entering a registration mode. Because the channel at the time of reception is fixed when received, the work of registering the identification code can be easily executed, the time required for the registration work can be shortened, and the set channel can be incorrectly set. This has an excellent effect that switching can be prevented.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a block diagram of a vehicle remote control device showing one embodiment of the present invention. FIG. 2 is a flowchart. FIG. 3 is a time chart. FIG. FIG. 5 is a perspective view of the device. FIG. 5 is a block diagram. FIG. 6 is a flowchart. Explanation of reference numerals. 21 is a transmitter, 23 is a receiver, 26 is a local oscillator circuit, 2
8 is a demodulation circuit, 30 is a CPU (registering means), 32 is EE
PROM (storage means), 34 indicates channel switching means.

────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Tadashi Wakitani No. 1 Noda, Toyota, Oguchi-machi, Oguchi-machi, Niwa-gun, Aichi Prefecture Tokai Rika Electric Machinery Works (56) References JP-A-5-30570 (JP, A) JP-A-3-250399 (JP, A) JP-A-6-325283 (JP, A) JP-A-5-287947 (JP, A) JP-A-7-48966 (JP, A) JP-A-57-180241 (JP, A) JP-A-63-26128 (JP, A) JP-A-2-130100 (JP, U) JP-A-6-39637 (JP, U) (58) Fields investigated (Int. Cl. ⁷⁾ , DB name) H04Q 9/00

Claims (1)

(57) [Claim 1] Drive control of vehicle equipment based on receiving a radio signal transmitted from a transmitter, and a radio signal can be received on a plurality of channels. In the vehicle remote control device configured as above, storage means for storing an identification code for identifying the transmitter, and when entering a registration mode for performing a process of writing the identification code to the storage means, Channel switching means for automatically switching channels until a radio signal transmitted from the transmitter is received and fixing the channel at the time of reception of the radio signal, an identification code included in the received radio signal the a registration means for writing in said memory means, said registration means, represents the channel in reception channel
File data together with the identification code in the storage means.
A remote control device for a vehicle, characterized in that the remote control device is configured to be inserted therein .