JP2001096229A - Electronic apparatus with vibration alarm function - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an electronic apparatus with a vibration alarm function which satisfies the spatial restriction on the small-sized electronic apparatus and is capable of imparting always optimum vibrations to a person to be alarmed. SOLUTION: The eccentric weight of a vibration motor 104 is rotated by external vibrations and a counter-electromotive voltage is generated while the motor is not driven. This counter-electromotive voltage is measured by a counter-electromotive voltage analyzing means 103 which maintains its intensity and the characteristics in terms of time. In driving the vibration motor 104, a signal which is a sign to drive the motor by a drive signal transmission means 101 is outputted to a vibration alarm control means 102. The vibration alarm control means 102, then, inputs the signal held in the counter-electromotive voltage analyzing means 103 and inputs the optimum vibration patterns from the vibration patterns stored in a vibration pattern memory means 105, thereby driving and stopping the vibration motor 104.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electronic device having a vibration notifying function for notifying information such as an alarm by a vibration motor for rotating an eccentric weight.

[0002]

2. Description of the Related Art In a conventional electronic device having a vibration notifying function using a vibration motor, an arbitrary vibration pattern can be selected by a person to be notified in order to notify the person to be notified with optimal vibration.

[0003]

However, there are the following problems in the conventional electronic equipment with a vibration notification function. (1) An arbitrary vibration pattern can be selected by the person to be notified, but since this is determined before the vibration notification,
When the person to be notified is operating or receiving another vibration during the vibration notification, the vibration from the electronic device with the vibration notification function may not be detected or may be detected as unpleasant vibration. (2) As a solution, it is conceivable to add a pressure sensor or an acceleration sensor for detecting the portable state of the person to be notified to the electronic device with the vibration notifying function. Is not desirable.

[0004]

Therefore, in order to solve the above-mentioned problems, the present invention employs the following means as shown in FIG.

As shown in FIG. 1, the electronic device with a vibration notifying function according to claim 1 includes a vibration motor 104 for rotating an eccentric weight, a driving signal transmitting means 101 for generating a signal for driving the vibration motor 104, A vibration notification control means 102 for driving the vibration motor 104 in a vibration pattern determined when a signal is input from the drive signal transmission means 101, and a counter-electromotive voltage generated by the vibration motor 104 for the vibration notification control means 1.
02 is provided.

With this configuration, the vibration motor 104
Is not driven, the vibration motor 104 is in a state in which the eccentric weight can be rotated by external vibration. Here, when the eccentric weight is rotated by external vibration, the vibration motor 1
04 generates a back electromotive voltage proportional to the rotation. The back electromotive voltage is measured by the back electromotive voltage analysis means 103, and a signal corresponding to the voltage is held.

The procedure when the vibration motor 104 is driven is as follows. First, a signal that signals the driving of the vibration motor 104 by the drive signal transmission means 101 is output to the vibration notification control means 102. Then, the vibration notification control means 102 inputs the signal held in the back electromotive force analysis means 103, and the vibration motor 104
Is determined, and the vibration motor 104 is driven.

[0008] Therefore, the vibration motor 104 also serves as a sensor for detecting the portable state of the person to be notified, and has an effect that a small electronic device satisfying the space restriction can be obtained.

According to a second aspect of the present invention, there is provided a back electromotive force analysis circuit comprising:
It is characterized in that it has a function of measuring the intensity of the back electromotive voltage generated from the signal 04 and outputting the result as a signal of two or more stages.

In this case, the portable state can be grasped by a relatively simple circuit, and the person to be informed can be notified with the optimum vibration.

A back electromotive voltage waveform analysis circuit according to claim 3
08 is characterized in that the back electromotive force analysis means 103 according to claim 1 has a function of taking back electromotive force generated from the vibration motor 104 in a time series and outputting a time characteristic thereof.

With this configuration, it is possible to more accurately detect the portable state, and it is possible to always notify the person to be informed with the optimum vibration.

A vibration pattern storage means 1 according to claim 4.
An electronic device with a vibration notifying function according to the present invention has a function of storing a plurality of vibration patterns.

In this way, the vibration pattern can be changed according to the taste of the person to be notified.

In the electronic device with a vibration notifying function according to a fifth aspect of the present invention, the electronic device with the vibration pattern storing means
From among the three or more vibration patterns,
The vibration notification control means 102 selects the optimum vibration pattern by the output of the third and drives the vibration motor 104.

In this case, there is an effect that the notification can always be made with the optimum vibration that matches the taste of the person to be notified.

[0017]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

(1) First Embodiment FIG. 2 is a circuit diagram showing a first embodiment of the present invention. FIG.
Correspond to the components described in FIG. 1 as follows.

First, the drive signal transmission circuit 202 shown in FIG.
Corresponds to the drive signal transmitting means 101 shown in FIG. The vibration notification control circuit 203 shown in FIG. 2 corresponds to the vibration notification control means 102 shown in FIG. 1, and the full-wave rectification circuit 204 and the comparator 205 shown in FIG. The vibration motor 201 shown in FIG. 2 corresponds to the vibration motor 104 shown in FIG.

Next, a circuit diagram of the present embodiment will be described with reference to FIG.

When the vibration motor 201 is not driven, the vibration motor 201 is in a state where the eccentric weight can be rotated by external vibration. Here, when the eccentric weight rotates due to external vibration, a back electromotive voltage Vmtr proportional to the rotation is generated from the vibration motor 201.

At this time, the switches 211 and 212 are turned off.
Since the switch 213 is ON, the back electromotive voltage Vmtr is applied to the full-wave rectifier circuit 204 and is compared by the comparator 205 with the voltage Vreg of the regulator 206. Here, if Vmtr> Vreg, the output CMP of the comparator 205 becomes “H” level and is output to the input D of the D-flip-flop 208. If Vmtr <Vreg, the comparator 205
Output CMP becomes 'L' level and is similarly output to the input D of the D-flip-flop 208.

Next, the procedure for driving the vibration motor 201 is as follows. First, the drive signal transmission circuit 202
Signal T which is a signal to drive the vibration motor 201 by
RG is output to the vibration notification control circuit 203. When the signal TRG is input to the input C of the D-flip-flop 208 in the vibration notification control circuit 203, the output Q outputs the “H” level or “L” level signal Q1 held at the input D to the transistor 209. Output to Then, the transistor 209 plays a role of switching and is turned on if the signal is at “H” level according to the level of the signal Q 1, and the voltage V 1 applied to the vibration motor 201 becomes equal to the voltage Vcc of the power supply 214. In addition, if the level is 'L', O
The voltage V1 applied to the vibration motor 201 in the FF state
Is V1 = Vcc · Rmtr / (Rmtr) from the resistance value Rs of the resistor 210 and the internal resistance value Rmtr of the vibration motor 201.
+ Rs), which is lower than the voltage Vcc of the power supply 214 determined by (+ Rs).

The signal TRG output from the drive signal transmission circuit 202 is also output to the drive timer 207. When the drive timer 207 receives the signal TRG, the switch 2
11, 212 are turned on, the switch 213 is turned off, and time counting is started. Time count is 1
At 0 seconds, the switches 211 and 212 are turned off to stop the vibration motor 201, and the switch 213 is turned off.
Set to N.

In this manner, the voltage V1 for driving the vibration motor 201 can be changed in two stages according to the magnitude of the external vibration immediately before driving the vibration motor 201. When the external vibration is large, the vibration motor 201 is switched off. The driving voltage can be increased, and strong vibration can be given to the person to be notified so as to be easily recognized.

Here, the voltage V1 for driving the vibration motor 201 is not limited to two stages, but may be any stage. Accordingly, the number of the comparator 205, the D-flip-flop 208, the transistor 209, and the resistor 210 is not limited to one, and may be plural. Any other device having the same function may be used. The time counted by the drive timer 207 is not limited to 10 seconds, but may be any time.
2 is not limited to the one shown in FIG. 2, but may be any other object as long as it has a function of switching the drive of the vibration motor 201 by ON / OFF.

(Second Embodiment) FIG. 3 is a circuit diagram showing a second embodiment of the present invention. Each component in FIG. 3 corresponds to each component described in FIG. 1 as follows.

First, the driving signal transmission circuit 302 shown in FIG.
Corresponds to the drive signal transmitting means 101 shown in FIG. The contents of the vibration notification control circuit 303 shown in FIG. 3 correspond to the vibration notification control means 102 shown in FIG. 1, and the full-wave rectification circuit 304, the amplifier, the A / D converter 306, and the FFT shown in FIG.
The calculator 307 and the back electromotive force waveform analysis circuit 308 correspond to the back electromotive force analysis means 103 shown in FIG. 1, and the vibration pattern storage circuit 309 shown in FIG. 3 corresponds to the vibration pattern storage means 105 shown in FIG. The vibration motor 30 shown in FIG.
Reference numeral 1 corresponds to the vibration motor 104 shown in FIG.

Next, a circuit diagram of this embodiment will be described with reference to FIG.

When the vibration motor 301 is not driven, the vibration motor 301 is in a state where the eccentric weight can rotate due to external vibration. Here, when the eccentric weight rotates due to external vibration, a counter electromotive voltage Vmtr proportional to the rotation is generated from the vibration motor 301.

At this time, the switches 312 and 313 are turned off.
Since the switch 314 is ON, the back electromotive voltage Vmtr is applied to the full-wave rectifier circuit 304 and is amplified by the amplifier circuit 305. Converted to a signal. This digital signal is time-sequentially converted by the FFT
07 to obtain a frequency spectrum. Here, when the back electromotive voltage generated from the vibration motor 301 is large enough, the amplifier circuit 305 may not be provided. Further, if a temporal characteristic of the back electromotive voltage can be obtained, FFT
Not only the arithmetic unit 307 but also any other unit may be used, and a plurality of them may be used.

The back electromotive force waveform analysis circuit 308 calculates the peak frequency of the frequency spectrum obtained from the FFT calculator 307 and holds the value F. Here, the value calculated by the back electromotive force waveform analysis circuit 308 is not limited to the peak frequency of the frequency spectrum, but may be the frequency of the smallest intensity in a certain frequency range, or may exhibit characteristics of the back electromotive force waveform. Any value is possible as long as it is possible.

The procedure for driving the vibration motor 301 is as follows. First, a signal TR which is a signal for driving the vibration motor 301 by the drive signal transmission circuit 302
G is output to the drive timer 310 in the vibration notification control circuit 303. When the driving timer 310 receives the signal TRG, the driving timer 310 starts time counting and outputs the signal TMR1.
Is turned on and the switch 314 is turned off. When the time count reaches 10 seconds, the signal TMR1 is turned off and the switch 314 is turned on to stop the vibration motor 301.
To Here, the time counted by the drive timer 310 is not limited to 10 seconds, but may be any time.

The vibration pattern storage circuit 309 stores two types of vibration pattern 1 having a driving cycle of 1 Hz and vibration pattern 2 having a driving cycle of 1.25 Hz. When the signal TMR1 is turned on, the vibration pattern selection circuit 311 inputs the value F held in the back electromotive voltage waveform analysis circuit 308. If the value F is close to a multiple of 1 Hz, the vibration pattern 2
Is selected, and if it is close to a multiple of 1.25 Hz, the vibration pattern 1 is selected, and the vibration pattern of the vibration pattern storage circuit 309 is input.

Thereafter, the signal T from the drive timer 310
While MR1 is ON, the drive frequency selection circuit operates the switches 312 and 313 at the drive cycle of the selected vibration pattern.
Switching between N and OFF drives the vibration motor 301.

Here, the vibration pattern stored in the vibration pattern storage circuit 309 is not limited to two types, and can have an arbitrary number of patterns. Various things such as voltage and driving time are possible, and any combination may be used among them, and each of them may change with time instead of a fixed value.

In this way, it is possible to more accurately detect the portable state for a certain period immediately before driving the vibration motor 301, and it is possible to obtain an effect that the person to be notified can always be notified with the optimum vibration.

[0038]

As described above, according to the present invention,
By measuring the back electromotive force generated by the vibration motor and feeding back its intensity and temporal characteristics, a small electronic device that meets the spatial constraints can be obtained, and the optimum vibration can always be given to the person to be notified. it can.

[Brief description of the drawings]

FIG. 1 is a block diagram showing a basic configuration of the present invention.

FIG. 2 is a circuit diagram showing a first embodiment of the present invention.

FIG. 3 is a circuit diagram showing a second embodiment of the present invention.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 101 Drive signal transmission means 102 Vibration notification control means 103 Back electromotive voltage analysis means 104 Vibration motor 105 Vibration pattern storage means 201 Vibration motor 202 Drive signal transmission circuit 203 Vibration notification control circuit 204 Full-wave rectifier circuit 205 Comparator 206 Regulator voltage 207 Drive timer 208 D-flip-flop 209 Transistor 210 Resistance 211-213 Switch 214 Power supply 301 Vibration motor 302 Drive signal transmission circuit 303 Vibration notification control circuit 304 Full-wave rectification circuit 305 Amplification circuit 306 A / D converter 307 FFT calculator 308 Back electromotive force Waveform analysis circuit 309 Vibration pattern storage circuit 310 Drive timer 311 Vibration pattern selection circuit 312 to 314 Switch 315 Power supply

Claims (5)

[Claims] A vibration motor that rotates an eccentric weight; a driving signal transmitting unit that generates a signal for driving the vibration motor; and a vibration pattern determined when a signal is input from the driving signal transmitting unit. An electronic device with a vibration notification function, comprising: a vibration notification control unit that is driven; and a back electromotive voltage analysis unit that detects a back electromotive voltage generated by the vibration motor and outputs the back electromotive voltage to the vibration notification control unit. 2. The method according to claim 1, wherein the back electromotive voltage analysis means measures the intensity of the back electromotive voltage generated from the vibration motor, and determines a result of the measurement.
The electronic device with a vibration notification function according to claim 1, further comprising a back electromotive voltage analysis circuit that outputs a signal of more than one stage. 3. The back electromotive voltage analysis means has a back electromotive voltage waveform analysis circuit which takes in a back electromotive voltage generated from the vibration motor in a time series and outputs a time characteristic thereof. Or the electronic device with a vibration notification function according to 2. 4. The electronic apparatus with a vibration notifying function according to claim 1, further comprising a vibration pattern storage unit that stores two or more types of vibration patterns for driving said vibration motor. 5. The vibration notification control means selects an optimum vibration pattern from the two or more vibration patterns stored in the vibration pattern storage means according to an output of the back electromotive force analysis means, and The electronic device with a vibration notification function according to claim 4, wherein the electronic device has a function of driving a motor.