JPS6033406Y2 - Speedometer for bicycles, etc. - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a speedometer that uses voice synthesis to notify information related to speed by voice.

Below, attach the pickup coil to the magnetic body of the wheel,
The present invention will be explained by taking as an example a speedometer that detects rotation by utilizing voltage induced in a pickup coil when a wheel rotates, and calculates speed from the number of rotations per unit time.

FIG. 1 is a diagram showing a part of a bicycle equipped with a reflector according to an embodiment of the present invention. Reference numeral 1 denotes a frame that holds a wheel 6, and a pickup coil 2 is fixed to this frame through a lead wire 3. It is connected to the electrical circuit shown in 4.

As shown in FIGS. 2 and 3, reference numeral 4 is a reflective plate molded from resin and has a magnet 4a integrated therein, and spokes 5 are fitted and fixed in recesses 4c.

4b is a diamond-cut reflective surface, and 4a is a magnet embedded during molding.

As can be seen from the above explanation, the present invention improves convenience by integrating the magnet required for rotation detection and the reflector required for traffic safety.

The reflector 4 is inserted between the spokes 5 and fixed to the wheel, and the magnet 4a is arranged to face the pickup coil 2.

Therefore, as the wheel 6 rotates, the magnet 4a passes near the pickup coil 2, inducing a voltage in this coil.

FIG. 4 shows a speed calculation circuit, 7 is a general control circuit, 8 is a generating circuit for a clock pulse P having a constant period (for example, 500 Hz) as shown in FIG.
has been introduced.

On the other hand, the voltage induced in the coil 2 is amplified and waveform-shaped by the comparator 9, and then introduced into the terminal IaO.

That is, the voltage Vin is a voltage obtained by dividing VDD by R□ and R2 when the magnet 4a does not cross the pickup fill 2.

On the other hand, Vref is a voltage divided by R3 and R4, and is connected to a non-inverting input and an inverting input, respectively.

Here, when a voltage is induced in the pickup coil 2 due to the rotation of the wheel, Vin changes as shown in FIG.
A signal such as Pl is input.

If this period is Ti, Ti is inversely proportional to the speed.

Now, the general control circuit 7 detects the falling edge t of Iao.

When it detects, the counter CU set inside it is set to the value 4.
6099, and at the same time, the value of this counter is incremented by 1 using the arithmetic circuit F every time a falling edge of Ia□ is detected.

This continues until the fall of Iao is detected again, at which point the count up is stopped and the counter value N at this time is stored in a speed memory M set separately.

Thereafter, the counter cu is preset to "0" and the same operation is repeated, while the speed data corresponding to N is taken out from the ROM 1 and outputted to the display circuit 10 through the output terminals 01-02 for digital display.

The relationship between the number of counters CU and speed data is shown in FIG.

In FIG. 4, reference numeral 11 denotes an instruction switch for audible notification of the current speed, which is provided near the band grip 13 of the bicycle bundle 12, as shown in FIG.

When this switch 11 is operated, the contents of the memory M are supplied to the speech synthesis circuit 7a.

The voice synthesis circuit 7a converts the current speed into voice in accordance with the contents of the memory, and outputs the voice from the speaker SP provided in the bundle 12 as, for example, 1 kilometer.

Next, the speech synthesis circuit 7a will be explained according to FIG.

When the switch 11 is operated, the contents of the memory M are converted in the decoder state into the value of the start address of the word order pattern of the sentence (in this case, °°) and latched into the address counter ACl.

The ROM 2 stores as data the start address of each segment in the ROM 3, which stores audio digital quantization information of the segment, which will be shown later.

Therefore, data N13 is set in the address counter AC2, and the data is transferred from the ROM3 to the D/A converter D/ and the low-pass filter LPF.

A signal is sent to the driver DR speaker SP in order, and audio is output.

That is, one digit is sounded according to the count up of the address counter AC2.

An end code EF2 is included at the end of the information 'sick', and when the EF2 discriminator JEF2 detects this, the address counter AC2 is cleared and the address counter ACi is counted up.

Therefore, N2 is set in the address counter AC2, and the sentence is repeatedly pronounced in the same manner.

An end code EF_l is included at the end of "E99," and when the EF1 discriminator JEF_l detects this, it clears the address counter ACl and has the next instruction.

[Other Examples]

(1) Even if the switch 11 is not turned on, it is possible to automatically generate a warning such as "Kilometer speed" when the speed reaches a preset speed (for example, 30 b/h).

That is, as shown in FIG. 9, a coincidence detection circuit CC is provided which detects whether or not the contents of the memory M have reached a value corresponding to 30h/h, and outputs an output when the content has reached a value corresponding to 30h/h. The configuration is such that the output is supplied.

In this case, the start address "°" is set.

(2) This invention can be used not only for bicycles but also for minibikes, trains, etc.

Furthermore, although the above description deals with speed detection, it can also be applied to an odometer that integrates the number of revolutions.

Furthermore, it goes without saying that the magnet and the reflector can be integrated not only by integral molding, but also by making the magnet and the reflector separately and fixing them with screws or the like.

According to the present invention, for example, if you want to know the speed while driving, conventionally you would have to look at a display like the one shown at 10 in FIG.

This is not good for traffic safety as it means looking elsewhere.

If you press the switch 11 shown in FIG. 8, you will be notified by voice, so there is no need to worry about the above.

Additionally, if you drive too fast, a voice will automatically appear to remind you to slow down, which is very helpful for traffic safety.

As mentioned above, according to the present invention, it is possible to automatically detect excessive speed, etc., and notify this by voice, which is useful for preventing accidents.

[Brief Description of the Drawings] Figure 1: A side view of the main parts of the bicycle implementing the present invention, Figure 2: An enlarged view of the main parts, Figure 3: A cross-sectional view taken along line AA' in Figure 2,
Fig. 4: Block diagram of the main parts of the present invention; Fig. 5: Time chart for explaining the operation of Fig. 4; Fig. 6: Correlation diagram between the number of counters and speed; Fig. 7: Explanation of the bicycle bundle section. 8: A block diagram of a speech synthesis circuit. FIG. 9: A block diagram of another embodiment. Symbol, M: memory, CC-coincidence detection circuit, 7a: speech synthesis circuit.

Claims (1)

[Scope of utility model registration request] A speed detection means that detects the speed of a bicycle, etc., a speed memory that stores the speed obtained by this detection means as digital information, and a match is detected by comparing the contents of the speed memory with a preset value. The present invention is characterized by comprising a detecting means for detecting the information, a means for deriving preset voice information from the ROM based on the output of the detecting means, and a voice synthesizing means for sequentially converting the voice information into voice and notifying the user. speedometer for bicycles, etc.