JPH01121475A - Radio type door lock controller - Google Patents

Abstract

PURPOSE: To easily and accurately lock and unlock a desired door, to reduce power consumption and to prevent the door from being left unlocked by selectively actuating door lock mechanism corresponding to a receiving antenna with the highest receiving level. CONSTITUTION: A control device is composed of receiving antennas 2, 3 corresponding to lateral doors; door lock mechanism 4, 5 corresponding to them; a comparing means 6 for comparing the receive level; and a selecting means 7 for selectively actuating the door lock mechanisms 4, 5. When a transmitter 1 is operated near the left (right) door, the comparing means 6 compares the receive level of the antenna 2 (3) and outputs a signal to the selecting means on the basis of the compared result. The selecting means 7 selects and actuates the door lock mechanism 4 (5) corresponding to the antenna 2 (3) with the high receive level. The desired left (right) door can therefore be locked/unlocked with a single transmitter 1.

Description

DETAILED DESCRIPTION OF THE INVENTION (Field of Industrial Application) The present invention relates to a wireless door lock system that operates a door lock mechanism in response to a code signal transmitted from a transmitter.

(Prior Art) Conventionally, as shown in, for example, Japanese Utility Model Application Publication No. 61-137976, a transmitter that transmits a predetermined code signal and a receiver that receives this code signal are provided. A wireless door lock system is known that operates a door lock mechanism to automatically lock or unlock a door when it is confirmed that a signal has been transmitted. By the way, in the above-mentioned conventional device, each door lock mechanism is normally configured to operate simultaneously when a code signal is transmitted, and unused doors are also locked or unlocked, which wastes MB. However, there is a problem in that when a door is manually locked after being unlocked by the door locking mechanism, the user may forget to lock another door.

In addition, in order to activate only a specific door lock mechanism, multiple transmitters corresponding to each door may be provided, or
Alternatively, it is possible to provide a selection switch on the transmitter to select the door, but what is the structure in this case? ! There is a problem that the operation is complicated and it is necessary to select and activate a specific transmitter or switch during use.

(Object of the Invention) The present invention was made to solve the above problems, and provides a wireless door lock control device that can easily lock and unlock a desired door with a simple configuration. It is something to do.

(Structure of the Invention) The present invention provides a wireless door lock control device that operates a door lock mechanism according to a code signal transmitted from a transmitter, in which a plurality of receiving antennas are provided at positions corresponding to a plurality of doors. and a door lock mechanism installed corresponding to each antenna, a comparison means for comparing the reception level of each antenna, and an antenna with the highest reception level according to the i control signal outputted from this comparison means. and a selection means for selecting and operating the door lock mechanism.

According to the above configuration, the reception level of the code signal received by the antenna of the door closest to the operator is the loudest, so the door lock mechanism corresponding to the door is activated and the door is locked. and unlocking is performed.

(Embodiment) FIG. 1 shows a schematic configuration of a wireless door lock control device according to the present invention. This wireless door lock control is
A transmitter 1 that transmits a predetermined code signal, and a pair of receiving antennas 2 provided on the left and right doors of the automobile.
3, a pair of door lock mechanisms 4.5 installed corresponding to each antenna 2.3, a comparison means 6 for comparing the reception levels of both antennas 2.3, and an output from this comparison means 6. A selection means 7 is provided for selecting and operating the door lock mechanism 4.5 corresponding to the receiving antenna 2.3 having the higher reception level in accordance with the signal.

The transmitter 1 has an operation switch 8 as shown in FIG.
and a code signal output means 9 which alternately outputs code signals for locking and unlocking the door in accordance with the operation of the operation switch 8, and a high frequency signal corresponding to the code signal output from the code signal output means 9. Generated high frequency transmitting means 1
0, and a transmitting antenna 11 that transmits a high frequency wave carrying the code signal.

As shown in FIG. 3, the receiving antenna 2.3 receives the high frequency signal transmitted from the transmitter I11, and transmits the received signal to the comparing means 6 via the amplified signal 12.13 and the detecting means 14.15. is configured to input. Further, the comparing means 6 compares the level of the received signal inputted from the detection means 14.15, and after a predetermined time has elapsed from the time when the received signal is inputted, the comparing means 6 compares the level of the received signal inputted from the detecting means 14.15. It is configured to output, via a delay circuit 19, a control signal for turning on the switch 17 and a control signal for switching the selection switch 18 of the door lock mechanisms 4 and 5 according to the comparison result of the received levels. There is.

The door lock mechanism 4.5 includes a drive motor 20.21 that drives the door lock, a relay 26.27 consisting of a drive coil 22.23 and an interlocking changeover switch 24.25.
and relay protection diodes 28 and 29, and the drive motors 20 and 21 rotate forward or reverse in response to a code signal transmitted from the transmitter 1 to lock or unlock the door. . That is, based on the code signal inputted from the comparing means 6 via the waveform shaping means 30, the code signal determining means 31 determines which of the code signals for locking or unlocking the door has been transmitted, and based on this determination result. Each time the changeover switch 32, which opens and closes the current flow path to the drive coil 22.23, is turned on and off, the interlocking changeover switch 24.25
The current flow path to the drive motors 20 and 21 is changed by switching the drive motors 20 and 21.

In the above configuration, when the operator stands near the left door of the car and presses the operation switch 8 of the transmitter 1fi1 to transmit a code signal to unlock the door, a high frequency signal carrying this code signal is transmitted to the receiving antenna 2. .3, and the received signals are input to the comparing means 6 via the amplifying means 12, 13 and the detecting means 14, 15.

The comparison means 6 compares the levels of the received signals, and the received signal with the higher reception level is outputted to the code signal discrimination means 31 via the waveform shaping means 30 to discriminate the code signal. As a result of this determination, if it is confirmed that a code signal has been sent to unlock the door,
A control signal for turning on the changeover switch 32 is output, and the changeover switch 32 is operated to a state where the drive motors 20 and 21 can be reversed.

Next, after a predetermined period of time has elapsed, the comparison means 6 outputs a control signal to turn on the power switch 17 via the delay circuit 19, and the selection switch 18 is moved to the door lock mechanism 4 side corresponding to the left door. A control signal for switching is output.

As a result, current is supplied from the power source 33 to the drive coil 22 of the relay 26, and the interlocking type changeover switch 24 is switched to the reverse side of the drive motor 20, and the current from the power source 33 is supplied to the interlocking type changeover switch 24. The signal is supplied to the drive morph 2o through the drive motor 20, and the drive motor 20 is driven in the reverse direction to release the left door.

Further, when the operator stands near the right door and operates the transmitter 1, the selection switch 18 is switched to the right door locking mechanism 5 side by the control signal output from the selection means 6, and the drive motor 21 is driven to rotate. It will be done. Further, when the transmitter 1 outputs a code signal for locking the door, the code signal determining means 31 outputs a control signal for turning off the changeover switch 32, and the relay 26.27
Since the supply of current to the drive coil 22.23 is stopped, the interlocking changeover switch 24.25 is switched to a state in which the drive motor 20.21 is rotated in the normal direction.

In this way, the comparison means 6 compares the reception levels of the reception antennas 2.3 installed corresponding to the left and right doors of the automobile, and based on the comparison result, a control signal is sent to the selection means 7 consisting of the selection switch 18. By outputting a Unlocking can be done easily and accurately. Therefore, it is possible to reduce power consumption compared to locking and unlocking all doors at the same time, and to avoid inconveniences such as forgetting to lock other doors when manually locking a door after unlocking. Occurrence can be prevented.

Additionally, if one of the receiving antennas 2 or 3 breaks down and poor reception occurs, the door lock mechanism corresponding to the antenna that is in a normal state will always operate regardless of the operator's position. The failure can be detected in the 9th period.

Please note that the above antenna and door lock mechanism are
It is not limited to the left and right doors, but may be provided corresponding to other doors such as a back door.

(Effects of the Invention) As explained above, the present invention compares the reception levels of reception antennas installed corresponding to a plurality of doors in a comparison means, and outputs υl1 from the comparison means.
Since the door lock mechanism corresponding to the antenna with the highest reception level is selected and activated by the selection means in accordance with the No. 11 signal, by operating a single transmitter while being close to the desired door, The above doors can be locked and unlocked easily and accurately (door lock)
This has the advantage that it is possible to reduce power consumption when operating one structure, and also to prevent forgetting to lock doors other than the door marked t after unlocking.

[Brief explanation of the drawing]

FIG. 1 is a block diagram showing a schematic configuration of a wireless door lock control device according to the present invention, FIG. 2 is a block diagram showing a specific configuration of a transmitter, and FIG. 3 is a block diagram showing the configuration of the above-mentioned door lock control device. FIG. 2 is a circuit diagram showing a specific example of a receiver. 1...Transmitter, 2.3...Antenna, 4.5...
Door lock mechanism, 6... Comparison means, 7... Selection means. Patent applicant: Mazda Corporation Representative: Patent attorney: Etsushi Kotani Figure 1 Figure 2 Figure 3

Claims (1)

[Claims] 1. In a wireless door lock control device that operates a door lock mechanism in response to a code signal transmitted from a transmitter, there are multiple reception antennas installed at positions corresponding to multiple doors, and a Comparison means for comparing the reception level of each antenna with the door lock mechanism installed at A wireless door lock control device comprising: a selection means for selecting a wireless door lock;