JPS6313231B2 - - Google Patents

Description

[Detailed description of the invention] The present invention relates to a pedometer.

Conventionally, in this type of pedometer, Fig. 6a,
As shown in b, the free end of the pendulum 9' with one end pivoted is supported on the main body 13' by a spring 11', and the vibration of the pendulum 9' due to the vertical movement of the pedestrian's body during walking or walking is prevented. The gear 2' or the indicator 5' was rotated one pitch at a time in a single direction, but this was not possible even in response to the vibrations of the pendulum caused by the individual differences of pedestrians or unexpected vibrations. There was a problem in that the gear 2' to the indicator 5' rotated, making it impossible to accurately measure the number of steps. The present invention seeks to provide a pedometer that eliminates the above-mentioned drawbacks.

Hereinafter, the pedometer of the present invention will be explained along with the drawings.

In FIGS. 1 and 2, numeral 1 denotes a detection circuit that outputs a digital signal in response to walking movement, and is formed of a reed switch 2 and the like. Reference numeral 3 denotes a gate circuit connected to the detection circuit 1, which prevents passage of other digital signals that arrive within a predetermined time ΔT from the falling edge of the input digital signal. 4
is a counter that adds up the number of digital signals given through the gate circuit 3, and the counted value is displayed on the subsequent display 5.

6 is a permanent magnet that drives the reed switch 2 to open and close; one end is fixed to a fulcrum shaft 8 with a fixing screw 7, and a weight 10 is attached to the free end of a pendulum 9 that vibrates in the vertical direction.
It is located with. Reference numeral 11 denotes a spring whose one end is fixed to the main body 13 which is pivotally supported by the fulcrum shaft 8 by a fixing pin 12, and the other end is fixed to the free end of the pendulum 9 by another fixing pin 14. 15, 16
1 and 2 are stoppers each formed of a buffer material, which cushion the free end of the pendulum 9 from colliding with the inner wall of the main body 13 in the event of excessive vibration.

Thus, when the pedometer of the present invention is carried, the free end of the pendulum 9 repeatedly moves up and down in a vertical plane by the spring 11 during walking.

When the free end of the pendulum 9 exhibits an accelerated movement as shown in FIG. 3a, the reed switch 2 is turned on and off by the permanent magnet 6 fixed to the free end as shown in FIG. 3b. Turning on/off the reed switch 2
The off signal is outputted as a digital output signal of the detection circuit 1 and given to the gate circuit 3. The blocking time ΔT of the gate circuit 3 is set to about 240 milliseconds, and since the interval between successive input signals is larger than the blocking time ΔT, the signals are passed through and given to the subsequent counter 4 as shown in FIG. 3c. . The counted value of the counter 4 is displayed on the display 5.

When the acceleration movement of the free end of the pendulum 9 can be shown as shown in FIG. 4a due to individual differences among pedestrians, the reed switch 2 is
is turned on and off as shown in FIG. 4b. At this time, a digital output signal that does not correspond to the number of steps of the pedestrian is output from the detection circuit 1 even within the blocking time ΔT of the gate circuit 3, but it is blocked by the gate circuit 3 and not supplied to the subsequent counter 4. You won't be disappointed.

The acceleration motion of the free end of the pendulum 9 is the fifth when the pendulum is running.
It is repeated in short cycles as shown in Figure a. In this case, it is preferable to set the blocking time ΔT of the gate circuit 3 to about 110 milliseconds. As a result, in exactly the same way as in FIGS. 4a to 4c, among the digital output signals of the detection circuit 1 as shown in FIG. 5b, a signal corresponding one-to-one to the time required for one step is generated as shown in FIG. The signal is applied to a counter 4 to a display 5 via a gate circuit 3.

The blocking time ΔT of the gate circuit 3 is preferably (240±10) milliseconds for normal walking and (110±10) milliseconds for normal walking.

Although the case has been described in which the detection circuit is a reed switch opened and closed by a permanent magnet, it will be clear that other detection devices for detecting vertical movement of the body may be used.

As is clear from the above, the pedometer of the present invention has the following features:
Since the output signal of the detection circuit is given to the counter via a gate circuit that is temporarily closed after the output signal of the detection circuit passes through, (a) A count value of 1 can be obtained correctly.

(b) Counting errors due to pedestrian walking style, individual differences, or unexpected vibrations can be removed.

Achieve remarkable effects such as

[Brief explanation of the drawing]

Fig. 1 is an embodiment of the pedometer of the present invention, Fig. 2 is a detailed view of the same part, Figs. 3 a to c, Figs. 4 a to c, and Fig. 5.
Figures a to c are explanatory diagrams of the same operation, and Figures 6a and 6b show a conventional example. 1...Detection circuit, 2...Reed switch, 3...
...Gate circuit, 4...Counter, 5...Display device, 6
... Permanent magnet, 7 ... Fixing screw, 8 ... Fulcrum shaft,
9... Pendulum, 10... Weight, 11... Spring, 12,
14...Fixing pin, 15...Body, 15, 16...
...Stotsupa.

Claims (1)

[Claims] 1. A detection circuit that detects vibration motion, a gate circuit that is temporarily closed after passing an output signal of the detection circuit, and a counter that counts the output signal of the gate circuit. A pedometer that is characterized by: 2. The pedometer according to claim 1, characterized in that the closing time of the gate circuit is switched between (110±10) milliseconds and (240±10) milliseconds.