JPH04321399A - remote control device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

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 oscillating a coded electromagnetic wave signal and receiving the signal without using a power source.

0002

2. Description of the Related Art Conventionally, as a remote control device, a device that uses infrared rays or radio waves to send out a coded signal according to the content of an operation has been widely used. This kind of remote control device was developed in the 1970s.
A door lock control device using infrared rays as shown in Japanese Patent Application Laid-open No. 1-181468 and a door lock control device using radio waves as shown in Japanese Patent Application Laid-Open No. 63-44089 are known. Furthermore, devices that use infrared rays to control audio/video equipment and the like are also widely used.

0003

However, such conventional remote control devices require an oscillation energy source such as a battery, and have the disadvantage that they are no longer able to send signals when the batteries are exhausted. As a remote control device that does not have such drawbacks and can be used without a power source, a device that uses spark discharge using a piezoelectric element is known. However, such a device only provides on/off information, and has the disadvantage that the amount of information is small and cannot be provided with a wide variety of functions.

The present invention has been made in view of the problems of conventional remote control devices, and is capable of transmitting signals without a power source, and furthermore, by coding, signals can be transmitted without being affected by disturbances. The technical challenge is to make it possible to transmit.

[0005]

[Means for Solving the Problems] The present invention is a remote control device having a transmitter for transmitting a coded electromagnetic wave signal and a receiver for receiving the signal, wherein the transmitter is configured to transmit a coded electromagnetic wave signal along a sliding direction. A trigger lever has trigger pieces arranged in a coded manner and is slidably held within a predetermined range, a biasing means for biasing the trigger lever in a predetermined direction, and a trigger lever provided fixedly in the direction of movement of the trigger lever. and a piezoelectric element whose actuator is energized in response to disconnection with the trigger piece as the trigger lever slides, and the receiver receives a signal at a frequency generated by the piezoelectric element of the transmitter. It is characterized by having a receiving section, a waveform shaping section that shapes the waveform of the output of the receiving section, and data determining means that determines whether the code of the transmitter held in advance matches and provides a received output when there is a match. It is something to do.

[0006]

[Operation] According to the present invention having such characteristics, by biasing the trigger lever against the biasing means at a constant speed along the sliding direction, the actuator is activated by the disconnection of the trigger lever with the trigger piece. is energized, and the piezoelectric element intermittently oscillates radio waves of a constant frequency. The oscillation intervals are oscillated at timings corresponding to the trigger pieces of the coded array. This signal is received by a receiving section and shaped by a waveform shaping section, thereby obtaining a coded signal sequence. A received signal is obtained by discriminating this signal string by a data discriminating means.

[0007]

DESCRIPTION OF THE PREFERRED EMBODIMENTS FIG. 1(a) is a front view and side view showing the configuration of a transmitter of a remote control device according to an embodiment of the present invention, and FIG. 1(b) is a longitudinal sectional view thereof. As shown in these figures, the transmitter 1 is provided with an F-shaped groove 3 in the case 2. The groove 3 is provided with notches 3a and 3b as shown in the figure, and the notch 3a is provided with a handle portion 4a of the trigger lever 4.
is protruding to the outside. The trigger lever 4 is held slidably in the left and right directions along a shaft 5, and is biased in the direction of arrow A within the case 2 by a tension spring 6 as shown. Further, an impact interference member 5a is provided at one end of the shaft 5. The trigger lever 4 is provided with a plurality of trigger pieces 4b, six in this case, at coded intervals as shown in the figure. A piezoelectric element 7 is provided at a position driven by the trigger piece 4b when the trigger lever 4 is biased in the direction of arrow B. The piezoelectric element 7 has an actuator 7a protruding at a position corresponding to the trigger piece 4b, and is fixed by a tension spring 8. The piezoelectric element 7 is an actuator 7a
Each time the button is pressed, a radio wave of a constant frequency is intermittently oscillated, and an antenna 9 is connected to one end of the radio wave. The transmitter 1 transmits two types of code strings C and D by sliding the trigger lever 4 from the notch 3a or 3b of the groove 3.
It sends out a signal.

Next, a receiver used in correspondence with the transmitter 1 of this embodiment will be explained. FIG. 2 is a block diagram showing the configuration of the receiver 10 according to this embodiment. In this figure, a receiver 10 is provided with an antenna 11, to which a coil L is connected so that it can receive a signal corresponding to the frequency of the piezoelectric element. A rectifier circuit including a diode D and capacitors C1 and C2 is connected to the end of the coil L.
The output is given to an amplifier circuit using FET12. F
The output of the ET 12 is amplified to a predetermined level via the amplifying section 13 and is provided to the waveform shaping section 14 . Waveform shaping section 14
converts this signal into a rectangular wave pulse train, and the signal is given to the data discriminator 15. A code memory 16 that holds a code corresponding to a pulse train sent out by a transmitter is connected to the data discriminator 15. In this embodiment, as described above, it is assumed that two types of codes C and D are held corresponding to the notches 3a and 3b, respectively. If the sent pulse train matches these codes C or D, the data discrimination unit 15 selects the drive unit 17 or 1, respectively.
8 gives a match signal. The drive units 17 and 18 rotate a motor 19 or 20 for energizing the actuator based on an input signal. Here, the receiver 10 includes an antenna 11, a coil L and its rectifier circuit, an FET 12,
The amplifying section 13 constitutes a receiving section that receives the frequency signal sent out from the transmitter 1, and the data determining section 15 and code memory 16 determine whether the code matches the transmitter's code and provide a reception output when there is a match. It constitutes data discrimination means.

Next, the operation of this embodiment will be explained. First, the handle 4a of the trigger lever 4 is rotated from the notch 3a of the groove provided in the case 1, and the trigger lever 4 is slid in the direction of arrow B all at once. Then, the trigger pieces 4b each come into contact with the actuator 7a of the piezoelectric element 7 and slide. Since the piezoelectric element 7 is energized every time the trigger piece 4b comes into contact with the actuator 7a, the piezoelectric element 7
The signal shown in is output. This signal is transmitted to antenna 9
It is output as radio waves via .

Now, when the receiver 10 receives a signal corresponding to the frequency of the piezoelectric element 7, the signal is rectified via the antenna 11, the coil L, the diode D, and the capacitors C1 and C2. Then, via the FET 12, the amplifier section 13
is amplified to a predetermined level. This signal is converted by the waveform shaping section 14 into a pulse train as shown in FIG. 3(b). The data determining unit 15 determines whether this signal matches the code stored in the code memory 16 that previously held codes C and D. For example, if the code matches code C, a matching signal is given from the data determining section 15 to the driving section 17, and the motor 19 is driven for a certain period of time.

Furthermore, when the trigger lever 4 is urged in the direction of arrow B from the notch 3b of the groove 3, the signal shown in FIG. 3(c) is outputted from the piezoelectric element 7 by a similar operation. By receiving this radio wave in the same way and shaping the waveform,
The formatted output shown in (d) is obtained. If this signal matches the code D held in the code memory 16, the matching signal is given to the drive section 18 and the motor 20 is driven for a certain period of time.

As described above, according to the present invention, a predetermined coded signal can be output using one piezoelectric element. Furthermore, by changing the starting position of the cutout piece, signals of different code sequences can be output, and the receiver can be configured to perform different functions.

In this embodiment, one piezoelectric element is used in the transmitter 1, and the piezoelectric element is energized by a fixed arrangement of trigger pieces, but FIG. 4 shows a transmitter 20 according to a second embodiment. As shown, it is also possible to arrange a plurality of piezoelectric elements 21 and 22 in parallel, and to provide two sets of trigger pieces 4c and 4d having different attachment positions in the axial direction of the trigger pieces of the trigger lever 4. By biasing the trigger lever 4 in the direction of arrow B from the notch 3a or 3b, the piezoelectric element 21 or 2
2 can also output a predetermined coded signal sequence. In this case, multiple piezoelectric elements are used, so
The number of times the piezoelectric element is driven is reduced by a factor of 1/the number of piezoelectric elements, and durability can be greatly improved.

[0014]

[Effects of the Invention] As explained in detail above, in the present invention,
A transmitter transmits a coded signal sequence using a piezoelectric element, and a receiver receives this signal and performs a predetermined function. Therefore, the transmitter can be constructed without using a power source or electronic circuit components. Furthermore, the advantage is that multiple pieces of information that accomplish multiple functions can be easily transmitted.

[Brief explanation of drawings]

FIG. 1(a) is a front view and a side view of a transmitter according to a first embodiment of the present invention, and FIG. 1(b) is a longitudinal sectional view thereof.

FIG. 2 is a block diagram showing the configuration of a receiver according to the first embodiment of the present invention.

FIG. 3 is a time chart showing the operation of this embodiment.

FIG. 4 is a longitudinal cross-sectional view of a transmitter according to a second embodiment of the invention.

[Explanation of symbols]

1 Transmitter 2 Case 3 groove 3a, 3b Notch 4 Trigger lever 4a Handle 4b, 4c, 4d Trigger piece 5 axis 7, 21, 22 Piezoelectric element 7a Actuator 9,11 Antenna 10 Receiver 13 Amplification section 14 Waveform shaping section 15 Data discrimination section 16 Code memory 17, 18 Drive section 19,20 Motor

Claims (1)

[Claims] 1. A remote control device comprising a transmitter for transmitting a coded electromagnetic wave signal and a receiver for receiving the signal, the transmitter comprising a coded array along the sliding direction. a trigger lever having a trigger piece and slidably held within a predetermined range; urging means for urging the trigger lever in a predetermined direction; and a piezoelectric element that energizes the actuator in response to disconnection with the trigger piece as it slides, and the receiver is a receiver that receives a signal at a frequency generated by the piezoelectric element of the transmitter. a waveform shaping section that shapes the waveform of the output of the receiving section; and data determining means that determines whether a code of the transmitter stored in advance matches the code and provides a received output when there is a match. A remote control device characterized by: