JPS6282388A - Timepiece with human body detecting device - Google Patents

Abstract

PURPOSE:To measure operation hours automatically by detecting a person at a specific position by a human body detection sensor and clocking the hours. CONSTITUTION:When a person sits at a desk, infrared rays from the person are detected by an infrared sensor 6, which generate pulses. When the person sits at the desk, the level of the pulses is higher than the reference level of a comparing circuit 10, which generates pulses. Then, a one-shot pulse generating circuit 11 continues to generate pulses with said pulses and a switching circuit 14 is held on. Then, the output of an oscillation frequency dividing circuit 12 is supplied to a counter 13 and clocking operation is started. If the person leaves the desk in the middle, the pulses from the circuit 11 are ceased and the circuit 14 is closed, so that the counter 13 stops clocking the time. When the person returns to the desk, the circuit 11 continues to generate pulses again with the pulses from the circuit 10 and the circuit 14 is opened, so that the counter 13 begins to clock the time again. Thus, the hours when the person sits at the desk are integrated and the operation time is measured automatically.

Description

[Detailed description of the invention] (Industrial application field) The present invention relates to a watch with a human body detection device.

(Conventional technology) For example, many students work hard at studying by setting a goal of how many hours they will study per day, but in order to measure the amount of time they have studied, they must look at the clock and study from what time to what time. It is calculated from the difference.

(Problem that the invention aims to solve) If you measure the time by looking at the clock, you will have to measure and subtract the time when you take a break or leave your desk to run an errand. , it was extremely bothersome and sometimes I couldn't concentrate on studying.

The present invention is designed to automatically measure the time spent on tasks such as studying.

(Means for Solving the Problems) The present invention includes a sensor that detects a human body within a specific range, and a timing circuit that measures time while the human body is detected based on the output of this sensor. The apparatus is provided with a display section for displaying information, and further provided with an alarm device that generates an alarm sound when the measured time reaches a set time.

(Example) In FIGS. 1 and 2, 1 is a time display section, and 2 is a display section for the time when a human body is detected. Reference numeral 3 denotes a sensor device for detecting a human body, which includes a motor 4 and a rotor 4 consisting of a drive coil 4as, a stator 4b, and a rotor 4C.
It consists of a chopper rotating body 5 and a sensor block 6 fixed to the shaft of C. The motor 4 is driven by a signal from a clock frequency dividing circuit (not shown). The rotating body 5 has two fan-shaped holes 5as'5a. An infrared sensor 6a is exposed in the sensor block 6 located at the rear of the rotating body 5, and a hole 61b is bored in a portion located in front of the sensor 6a. Reference numeral 7 denotes a reset button for a human body detection time counter, which will be described later. When the reset button 7 is depressed, a switch 8 is closed.

In FIG. 3, 9 is an amplifier that amplifies the output of the infrared sensor 6a, 10 is a comparator circuit that generates an output when the output of the amplifier 9 is higher than the standard level, and 11 is a retriggerable one-shot pulse generation circuit. In the example, the output is set to be generated while human power is supplied at a cycle of 1/8 seconds or less.

12 is a clock oscillation frequency dividing circuit, 13 is a counter, 14 is a switching circuit, and 15 is an alarm circuit.

Next, the operation will be explained. When the switch 8 in FIGS. 1 and 2 is closed, the counter 13 in FIG. 3 is held in a reset state, and 0 is displayed on the display section 2 in FIG. Further, no drive signal is supplied to the motor 4, so it does not rotate.

So, when I put this clock device on my desk and sit down to study, I release the reset button 7 and open the switch 8. As a result, a drive signal is supplied to the motor 4, causing the rotating body 5 to rotate, and the counter 1 in FIG.
3 reset is released.

As the rotating body 5 rotates, infrared rays from the human body entering through the hole 1b are chopped. In this example, the rotation period of the rotating body 5 is set to 4 Hz, and since the rotating body 4 is provided with two holes, an 8 Hz pulse is generated from the infrared sensor 6a. When a person is sitting in front of the desk, the level of the pulse is higher than 25 lB of the comparator circuit 10, and the comparator circuit 10 generates a pulse of 8 Hz. Due to this pulse, the one-shot pulse generation circuit 11 continues to generate pulses, and the switching circuit 14
is kept on. Therefore, the output from the oscillation frequency divider circuit 12 is supplied to the counter 13 to start counting time.

The contents of this time measurement are displayed on the display section 2 in FIG.

If the user leaves the desk midway, the pulse from the one-shot pulse generating circuit 11 stops, the switching circuit 14 closes, and the counter 13 stops measuring time. When the user sits down at the desk again, the one-shot pulse generating circuit 11 generates a pulse in response to the pulse from the comparator circuit 10, the switching circuit 14 opens, and the counter 13 starts counting 11 steps.

In this way, the time spent sitting at the desk is accumulated.

The counter 13 generates an output every time one hour is counted,
This output causes the alarm circuit 15 to generate an alarm sound for a certain period of time.

After studying for the P fixed period of the day, the user presses the reset button 7 to close the switch 8, reset the counter 13, and stop the drive signal for the motor 4.

Figure 4 shows an example in which an alarm sound is generated when a preset time has elapsed.
1 is a time setting means, 17 is a register, and 18 is a comparison circuit.

Note that the same numbers as in FIG. 4 indicate the same things.

In the above configuration, first, the setting means 16 sets the scheduled time in the register 17. Then, the reset button 7 is raised to release the reset of the counter 13 and start timekeeping. The contents of the counter 13 are compared with the set time of the register by a comparison circuit 18. When the contents of the counter 13 match the set time, the comparison circuit 18 generates an output and the alarm circuit 15 generates an alarm sound. Therefore, the user can know that the scheduled time has elapsed without looking at the time display.

Note that if there is no input to the counter for a long time while the switch 8 is open, the counter may be automatically reset by measuring this time.

(Effects of the Invention) According to the present invention, a sensor detects the presence of a person in a specific position and measures the time, so for example, the time when a person is sitting at a desk and studying is automatically If you leave your seat halfway, the time will not be accumulated, but when you return to your seat, the time will automatically be restarted, allowing you to accurately measure the accumulated time.

Also, by displaying the clock time, it is possible to check the time spent at the seat.

Furthermore, by generating an alarm sound when a preset time has elapsed, it is possible to know that the scheduled time has elapsed without looking at the display.

[Brief explanation of drawings]

Fig. 1 is a front view showing an embodiment of the present invention, Fig. 2 is a sectional view taken along the line ■-■ in Fig. 1, Fig. 3 is a block diagram showing an example of the circuit configuration, and Fig. 4 is a circuit diagram. FIG. 3 is a block diagram showing another example of the configuration. 2...Display section 3...Sensor device 4...Motor 5...Rotating body 6a...Infrared sensor 13...Counter 15...Alarm circuit 16...Setting means 17... Register 18...comparison circuit and above

Claims (3)

[Claims] (1) A watch with a human body detection device, which includes a sensor that detects a human body within a specific range, and a timekeeping circuit that measures time while the human body is detected by the sensor. (2) A human body detection device that includes a sensor that detects a human body within a specific range, a timing circuit that measures time while the human body is detected by this sensor, and a display unit that displays the time measurement content of this timing circuit. A clock. (3) A sensor that detects a human body within a specific range, a timing circuit that measures time while the human body is detected by this sensor, and an alarm device that generates an alarm sound when this timing circuit measures a set time. A watch with a human body detection device.