JPH01101097A - Battery down alarming device for remote control equipment - Google Patents

Abstract

PURPOSE:To simply detect the drop of battery voltage and to replace a battery by providing a transmission part with a battery down detecting means for detecting the drop of battery voltage and a means for forming a waveform signal pattern whose timing is different from that of a normal battery voltage at the time of battery down. CONSTITUTION:When the voltage of a small battery 13 is less than a regulated value, a lock knob 2 is driven at the timing of a signal 6-C', and when the voltage is more than the regulated value, the lock knob 2 is driven at the time of a signal 6-C. Since there is a difference between the signals 6-C and 6-C', an operator can easily detect the voltage drop. Since the voltage drop can be detected from the length of time up to the operation start of the lock knob, an alarming device such as an exclusive pilot lamp buzzer can be omitted. Since an exclusive alarm output device can be omitted, the transmission part can be miniaturized and its cost can be reduced.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a dead battery warning device for a remote control device, which includes a transmitter powered by a battery and a receiver having a mechanism control output. This invention relates to a battery exhaustion alarm device that does not require a dedicated alarm for alarming when voltage drops.

[Conventional technology]

A conventional remote control device includes a transmitter that is powered by a battery, and a receiver that receives a command signal sent from the transmitter and converts it into a signal for controlling the mechanism. It consists of two parts.

In such a remote control device, when the voltage of the battery in the transmitting section decreases, the level of the signal output from the transmitting section decreases, making it impossible for the receiving section to accurately receive command signals. Furthermore, when the output level of the transmitting section decreases, the receiving section is more susceptible to the influence of noise, and the controlled mechanism becomes erroneous.
lEIIfi: A problem occurs.

For this reason, it is important to detect in advance whether the battery in the transmitter is running out. Conventionally, in order to notify the user that the battery is running out, the transmitter has been provided with a switch for detecting the battery running out and warning means such as a pilot lamp that lights up when the switch is pressed.

[Problem that the invention seeks to solve]

The above conventional technology requires an alarm device dedicated to detecting a dead battery to be installed in the transmitter, so no consideration is given to the installation space, and the transmitter is large due to the space required for installation. There was a problem. In addition, the manufacturing cost was high, and there was also a problem in terms of economy.

The object of the present invention is to eliminate the problems of the prior art as described above,
An object of the present invention is to provide an economical and space-saving battery exhaustion alarm device capable of issuing an alarm.

[Elaborate means to solve problems]

The above purpose is to shift the timing of the mechanism control output from the normal output when the battery voltage drops in a remote control device consisting of a transmitting section using a battery as a power source and a receiving section having a mechanism control output. , achieved.

[Effect]

Based on the data sent from the battery-powered transmitter, the receiver outputs a signal for controlling the mechanism. If the data does not include information on battery voltage drop, the signal is output immediately. However, if the data includes information on battery voltage drop, the signal is output after a certain time delay.

As a result, the operation timing of the mechanism section is shifted, so
It is possible to detect a drop in battery voltage and replace the battery before the battery-powered transmitter becomes unusable.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1, 2, and 3. Although this embodiment relates to a remote control device for a lock knob of an automobile, the present invention can also be used for other remote control devices.

In FIG. 1, 1 is a vehicle body, 2 is a lock knob, 3 is a request switch, 4 is a radio wave card, and 5 is an antenna. In this embodiment, the antenna 5 is incorporated inside the door mirror. 6 is a transmitter/receiver.

The second factor is a block diagram of the radio wave card 4 and the transceiver 6. In the figure, 2 is a lock knob, 2' is a peripheral circuit that moves the lock knob up and down in the direction of the arrow, 3 is a request switch, 4 is a radio wave card, 5 is an antenna (mirror built-in), and 6 is a transmitter/receiver. It corresponds to the sign. Further, 7 is an antenna, 8 is an amplifier, 9 is a waveform shaper, 10 is a CPU (micro combinator), 11 is an oscillation circuit, 12 is a dead battery detection circuit, and 13 is a small battery. Further, 18 is an amplifier, 19 is a waveform shaper, 20 is a CPU, and 21 is an oscillation circuit.

FIG. 3 shows an operation flowchart of the cpυ10 and the CPU 20, and FIG. 4 shows the signal waveform 6-Jl sent out from the antenna 5, the signal waveform 4-8+4a' sent out from the antenna 7, and the peripheral circuit 2
' Signal waveforms 6-Q and 6-c'-1i are shown.

Next, the operation of this embodiment will be explained with reference to FIGS. 3 and 4. When the request switch 3 in FIG. 2 is pressed and made conductive (step 81 in FIG. 3), the CPT
320 instructs the oscillation circuit 21 of the transceiver 6 to transmit the waveform signal 6-at- shown in FIG. 4 (step 82).
). This ninth oscillation circuit 21 sends out an evening waveform signal 6-a't- to the antenna 5. The signal 6-a sent from the antenna 5 is received by the antenna 7 of the radio wave card 4 shown in FIG. 2, passes through the amplifier 8 and the waveform shaper 9, and is input to the CPU 10. CPolo checks whether the input signal is the same as the waveform signal (steps 810, 511).

If the input signal is equal to the waveform signal 6-a (YES in step 811), the CPUH)
2, read the voltage of the small battery 13.

This operation is performed by comparing the voltage of the small battery 13 with a predetermined value by the comparator of the dead battery detection circuit 12, and reading the comparison result t-CP01G. C
If the voltage of the small battery 15 is above the specified value (step S12 is YES), Polo generates a pattern of the waveform signal 4-a (step 513), and sends an instruction to the oscillation circuit 11 to send the pattern.
Output to. (Step 514) On the other hand, if the voltage of the small battery 130 is below the specified value (step 312 is NO), the CPU 10 creates a pattern of the waveform signal 4-a' (step 515) and outputs a sending instruction to the oscillation circuit 11. (step 516).

- The oscillation circuit 11 of the radio wave card 4 sends out the signal to the antenna 7 based on the instruction.

The signal is received by the antenna 5 of the transceiver 6 and the amplifier 1
8. The signal passes through the waveform shaper 19 and is input to the CPU 20.

The CPU 20 determines the signal, and if the waveform signal 4-a is (
(Yes in step S5), the signal pattern 6-QQ is created (step S4), and the signal 6-Cf is output to the peripheral circuit 2' (step S5). With this, lock knob 2
is activated.

On the other hand, if the signal is the waveform signal 4-a' (step S6
is YES), the signal pattern 6-C'' (step S7), and the signal 6-C' is output to the peripheral circuit 2' (
Step 3a). This causes the lock knob 2 to be operated.

As a result of this series of operations, the lock knob 2 operates at the timing of the signal 6-C' when the voltage of the small battery 13 shown in FIG. , the lock knob 2 operates at the timing of the signals b-c. Since there is a difference of 7 hours between signal 6-C and signal 6-01, the operator can easily detect the voltage drop.

According to this embodiment, a voltage drop can be detected based on the length of time until the lock knob starts operating, so there is no need for a dedicated pilot lamp, buzzer, or other alarm device.

〔Effect of the invention〕

According to the present invention, there is no need for a dedicated alarm output device, so
This has the effect that the transmitter can be made smaller and the cost can be reduced.

[Brief explanation of the drawing]

FIG. 1 is an overall diagram of an embodiment of the present invention, FIG. 2 is a block diagram of the embodiment, FIG. 3 is a 70-chart of the CPU, and FIG. 4 is an operation waveform diagram of each part. Explanation of symbols 2...Lock knob, 2'...Peripheral circuit, 1G...
CPU20...CPU, 12...Battery dead detection circuit, 13...Small battery Figure 1

Claims (1)

[Scope of Claims] 1. A dead battery warning device for a remote control device comprising a transmitting section using a battery as a power source and a receiving section having a mechanism control output, wherein the transmitting section detects a voltage drop in the battery. The receiver comprises a dead battery detection means, a means for creating a waveform signal pattern whose timing is different from that when the battery voltage is normal when the battery runs out, and a means for transmitting the waveform signal, which the receiving section outputs when the battery runs out. A low-battery alarm device for a remote control device, characterized in that the timing of mechanism control is shifted from normal timing. 2. A dead battery warning device for a remote control device according to claim 1, wherein the output timing of the mechanism control is delayed from the normal output.