JPS5854489A - Pedometer - Google Patents

Abstract

PURPOSE:To avoid a counting error, by providing a step number discriminating part between a step number detecting part and a counter and then obtaining an output signal at all times and per step through step number discriminating part. CONSTITUTION:A step number detecting part 20 detects the up-down movement of a human body when he or she walks and then delivers a detection output. A step number discriminating part 30 is provided between the part 20 and a counter 40. The part 30 is provided with monostable multivibrators 32 and 33 which deliver two pulses and an AND gate 31 which feeds the output signals of the vibrators 32 and 33 and the output signal of the part 20. The output signals of the part 30 are counted in the form of numbers of steps. The part 30 always produces an output signal for each step regardless of the walking speed even though an extra pulse is produced for the output signal of the part 20 owing to plural swings produced per step. As a result, the number of steps can be counted in an accurate way.

Description

[Detailed description of the invention] The present invention relates to a step counting hand.

Among devices that count and display the number of steps taken while walking and running, there is a pedometer that has been well known for some time, and is similar to a line machine. O shown in the first @ is an example of its configuration, and 1
is a pendulum, 2 is a weight, 3 is a d-ne, 4 is a base plate, 5 is a pendulum fulcrum shaft, 6 is a gear, T is a driving diagonal, 8 is a reverse rotation prevention diagonal, 9#
fd fixing pin, 16 is the ST2-%1iFi case fixing part, 12 is the step count display board, 13 is the indicator needle, and it is attached to a part of the body such as the waist with the arrow direction in the figure vertically upward. and use it. When the pendulum 1 swings up and down while walking or running, the gear 6 is advanced one tooth at a time by the light-transmitting cinch 7 attached to the pendulum 1, and the mechanism connected to the gear 6 (see Fig. (not shown) K drives the indicator hand U to display the number of steps.

Next, Fig. 2 shows a pedometer with pedometer hands that counts electrically without using the aforementioned gear mechanism.It has the same function as the large one shown in Fig. KFi are given the same reference numerals. Pendulum 1. Weight 2. -f
Ne3. Pendulum fulcrum shaft5.・The paddle fixing bottle 9 is the same as the l1lil one), and there is also a permanent magnet 14 * 9
-y switch! 5 has been newly established.

To explain the operation below, the pendulum 1 swings due to the vertical movement of the body accompanying walking or running, and the permanent magnet 14 attached to the tip of the pendulum l swings up and down on one side of the reed switch 15. By approaching and moving away from the reed switch 15, the reed switch 1
Opening/closing signals corresponding to the vertical movement of the pendulum 1 are obtained at both ends of the pendulum 5.

The signal obtained from this reed switch is counted by a counter, and the value is displayed on a display or the like.

By the way, in Figure 3 (< indicates vertical acceleration [G] with respect to time t during walking, the vertical movement of the human body during walking or running depends on walking speed and individual differences, but it is not a single tremor) It is a large one, especially one that causes 11-degree shaking two to three times, including the aftershock of one step (S, S2 in Figure 3 (a) indicates the time required for one step). In the step count sensor shown in FIG. 2, a plurality of detection signals a from the reed switch 15 are generated for each step, as shown in FIG. 3 (dJ), which causes erroneous counting of the number of steps.

Reed switch 15 to the nine step number senna and counter and O
detection signal for a certain period of time (for example, 130
(-a@s)) )) There is also a device that is provided with a signal expansion circuit that extends the signal and obtains a detection signal of 150 (steps/minute) per step.
When walking at varying speeds, the detection signal a' (hereinafter referred to as the extension signal) is extended by one step as shown in Fig. 4C) and is detected using a microcomputer or the like. When counting signals, these signals cannot be identified as signals based on two steps, and the number of steps is mistakenly counted as one, resulting in a number of steps being counted less than the actual number of steps.

The present invention has been proposed in view of the above-mentioned points, and its purpose is to detect the number of steps consisting of a monostable multi-paddle iterator, an P gate, etc. in relation to a step count detection section consisting of a step count sensor, etc., and a counter. A KL is provided with a discrimination section, and the step count discrimination section discriminates the detection signal of the step count seven sensor section and always obtains one output signal for each step. It is on offer.

DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

- Figure 5 is a block diagram showing the remaining configuration of the present invention. In the figure, 20Fi 21st shows a permanent magnet that moves with the vertical movement of the body when walking or running, as shown in the step count sensor, and this permanent magnet. This is a step count detection unit consisting of a reed switch that is turned on and off by the contact and separation of a magnet. The output terminal of the step count detecting section of ε is connected to the input terminal AK of the step count discriminating section (equipment) configured as shown in FIG.

In FIG. 8, there is a three-man power AND r-) 31 formed by connecting the step count determination unit 30F1 input terminal to the L input terminal, and an input terminal 1,000 and AND? -) Two monostables connected respectively between the other two input terminals of 31! Consists of 33 multipaitora proverbs. One of these is a cheap noodle multi-pie!
For example, 131 (ms) from the falling edge of the input signal
During @c), it operates so that the output signal voltage becomes the L rail, and the other monostable multi-layer plate 33F! It operates so that the output signal voltage is at H level for a period of d 1 (m-·C) from the rise of the input signal.

As shown in FIG. 5, the output terminal of the step count discriminator is connected to an internal counter 40KII of a miter-related computer, etc.), which counts the output signal of the step count discriminator I as the number of steps. ing. - Next, perform this operation in the 611th. Explaining according to FIGS. 7 and 9, first, for the vertical acceleration fGK of the waveform shown in FIG. , Thus, the first Δlus signal p1 within the time required for one step S, ,S2
．． For example, within 13G (was@e) of the falling edge of p;, the next drus signal p2. If there is a rising edge of p, ', this signal is determined to be based on the aftershock accompanying the walking motion of p,,p;Fil#0, and after determining the number of steps, The output signal D due to the Δrus signals p, ,p,' is as follows.
′ is output.

In addition, the output signal of the step count detecting unit for the vertical acceleration G of the waveform shown in Fig. 6 (→) is as shown in Fig. 6 (E). In this case, there is no signal due to aftershock. Therefore, only the output signal D'tj after the number of steps has been determined/corresponds to the pulse signals P, , P;.Therefore, as shown in FIG. Regardless of the presence or absence of P;, it is sufficient to output one pulse signal for each step as an output signal from the step count discriminating section I, as shown in the figure (.).

That is, the number of steps discriminating unit shown in FIG.
As shown in Figure 4, the input signal to the input terminal 1,000 people (in Figure 9, the symbol attached to the left end of each waveform indicates the signal waveform of the corresponding reporting point in Figure 8), in other words, the step count detection section From the fall of the first medium pulse signal P of the output signal A of the addition to the fall of the second Δ pulse signal P due to aftershock) t is 131 (m
s**), the monostable multi/gulator proverb.

The output waveforms at the three points and the zero point after passing through A are as shown in the figure, and a single pulse signal appears at the output terminal as the logical product of these three outputs A, B, and C.

Next, in Fig. 9 (as shown in c4, from the fall of the pulse signal P to the rise of the /4 pulse signal P2) t is 131 (mm・C)
yo #) % short value, for example 130 (m@*e),
Moreover, the armpit signal? , () If the falling edge is after 131 (mm*c) from the falling edge of the Δ pulse signal P, then the output waveform at point Ktj and 0 is the pulse signal P2.
At the start-up and downtime of the Kft level, but after that 1 (m
s @ s) After the 3 outputs A, B, C are inverted to L level again, the Δ pulse signal D causes erroneous counting.
There is no case where both are at the Kit level, and only a single signal corresponding to one step is output from the output terminal.

As shown in Fig. 9 of Maraji (←), if the period from the falling edge of the Δ pulse signal P to the rising edge of the second pulse signal exceeds 131 (ms@e), such a pulse signal is The normal 0 due to the next 01 step, not the one attached to the drus signal P,
/# Since it is determined that the pulse signal P is at the crab level, the two outputs B and C are both at the H level, which corresponds to two steps from the output terminal. Two pulse signals will be output.

As described above, according to the present invention, two monostable multivibrators that receive the output signal of the step count detection unit as input and output two pulse signals having different waveforms, and output signals of both monostable multivibrators and an output signal of the step count detection unit.

Since the output signal of this step count discriminator is counted as the number of steps, even if there are multiple tremors per step and an extra 9 pulse signal appears in the output signal of the step count detector,
The number of steps determining section can determine whether the lever 0'f pulse signal is correct or not and remove it, so that one output signal is always obtained for each step regardless of the walking speed, and the number of steps can be accurately counted.

[Brief explanation of drawings]

111 (7i), (→ is an explanatory diagram of a pedometer, Fig. 2 is an explanatory diagram of a conventional step count sensor, Fig. 3 (a) is a waveform diagram showing the relationship between time and vertical acceleration, Figure <t4 is a time chart of the reed switch detection signal, Figure 4 (4F1
Waveform diagram showing the relationship between time and vertical acceleration, the same figure (
→ is the time chart of the detection signal of the reed switch.
1i (c) is a time chart of the expanded signal, FIG. 5 is a block diagram showing an embodiment of the present invention, and FIGS. 6(a) and (
-4 is a waveform diagram showing the relationship between time and vertical acceleration;
The same figure (→ and (e) are time charts of the output signal of the step count detection section, V1 and (f) of the same figure are time charts of the output signal after step count discrimination % @ figure 7 (4 company time and vertical acceleration chamber 8 is a waveform diagram showing the relationship between the step count detection unit and the output signal of the step count detection unit. ((), f mouth), G-field are respectively @
8 is a time chart at each corresponding point in FIG. Addition: step count detection unit; multi-dibrator. xK1 Figure 1 Figure 2 Figure 3 Figure 4 Figure 5 l1146 Figure! Figure 7

Claims (1)

[Claims] A step count detection unit that detects the vertical movement of the human body during walking and outputs a detection signal, a step count determination unit that is connected to the KII on the output side of the intermittence detection unit, and a wrinkled step count determination unit that counts the output signal of the wrinkled step count determination unit as the number of steps. The step count discriminating section receives the output signal of the step count detecting section and outputs a separate -9 pulse signal. The output signal of an ANDC circuit which has a 7-chi d iterator, and receives the output signals of both of the monostable multivibrators and the output signal of the step count detection section as input.
A step count needle configured to add to an Ij period counter.