JP4225469B2 - counter - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a counter, and more particularly, to a technique that can automatically and easily count the number of people passing by.
[0002]
[Prior art]
Usually, when investigating the number of people passing by, a method of counting the number of people using an analog counter by hand such as a part-time job is generally performed.
[0003]
In recent years, this type of survey has increased and labor costs have soared due to the need for labor, which has led to high costs for surveys, as well as forgetting to push or push pushbuttons to manually count with an analog counter. Mistakes occurred and accurate counting was difficult.
[0004]
[Problems to be solved by the invention]
The present invention has been made paying attention to such a problem. Light changes are received by an optical sensor, counted by a counter connected to the optical sensor, and displayed on the display. The purpose is to provide a portable counter that does not require manpower.
[0005]
[Means for Solving the Problems]
In order to solve the above problems, a counter according to the present invention includes a switch body that includes a switch for turning on / off a power source, a display lamp, and a counter display unit, and a light receiving window;
An optical sensor that receives electromagnetic waves radiated from an object having temperature through the light receiving window, and converts a change in the amount of received light into an electrical signal;
An amplifying unit for amplifying the electrical signal;
A detection unit that detects a change in light amount based on an electrical signal corresponding to a change in the amount of light amplified by the amplification unit, detects a change in light amount from dark to bright and changes from light to dark, and transmits a pulse. When,
A one-shot timer unit for transmitting the pulse when the pulse transmitted from the detection unit is received in a set detection time;
A relay drive unit that operates in response to a pulse transmitted from the one-shot timer unit;
A relay unit connected to the relay drive unit, and performing a connection between the display lamp and a power source by an operation of the relay drive unit;
A counting unit that is electrically connected to the relay unit, counts pulses of the relay drive unit by operation of the relay drive unit, and displays the counter display unit;
A power source is connected via the switch to a relay board composed of the amplification unit, detection unit, one-shot timer unit, relay drive unit, and relay unit, and when the switch is turned on, the display lamp is turned on to investigate. It is characterized by being able to confirm whether it is possible .
According to this feature, it is configured so that a person or an object can approach or change the amount of light passing through and can be converted into a count and displayed on the counter display. By installing it in the center, it is possible to count the number of people who pass accurately without requiring manual labor, and a significant reduction in labor costs can be expected.
[0006]
In the counter of the present invention, since an indicator lamp for displaying on / off of the switch is attached to a predetermined portion of the counter body, it can be confirmed whether or not the investigation is possible by checking whether the indicator lamp is lit.
[0007]
In the counter of the present invention, it is preferable that the power source is composed of a dry cell or the like.
In this way, the counter of the present invention can be freely carried and installed anywhere.
[0008]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0009]
1 to 6 show an embodiment of the present invention. FIG. 1 is a front view of a counter according to the present invention, FIG. 2 is a back view, FIG. 3 is a side view, FIG. 4 is a plan view, and FIG. Is a bottom view, and FIG. 6 is a block diagram according to the present invention.
[0010]
Reference numeral 1 shown in FIG. 1 indicates a counter body. The counter body 1 is integrally formed of a metal such as aluminum or iron or a synthetic resin.
A light receiving window 3 for receiving electromagnetic waves is provided at a predetermined location on the front surface 2 of the counter body 1.
[0011]
The wavelength of the electromagnetic wave is longer than visible light and shorter than microwave. Generally, it is called infrared rays, and this infrared ray has a characteristic that it is naturally emitted from all objects having temperature with a wavelength distribution corresponding to the temperature.
[0012]
The wavelength range of electromagnetic waves collectively called infrared rays is about 0.76 μm to 1 mm.
An optical sensor 4 for converting received light into an electrical signal is provided in the vicinity of the light receiving window 3 inside the counter body 1.
[0013]
The optical sensor 4 is connected to a relay board 6 provided on the bottom 5 in the counter body 1. The relay board 6 will be described later.
[0014]
The relay board 6 is electrically connected to the counting unit 9, and the counter display unit 10 of the counting unit 9 is provided at a predetermined position on the rear surface 11 of the counter body 1, but is not necessarily limited to the light receiving window 3 and the counter display unit 10. Need not be limited to the front surface 2 and the rear surface 11 of the counter body 1, and the light receiving window 3 can be provided in a place where the light of the counter body 1 is easily received, and the counter display unit 10 can be easily viewed. It is possible to provide it.
Reference numeral 18 denotes a push button for clearing the display on the counter display unit 10.
[0015]
The switch 12 is provided at a predetermined position of the counter body 1 and may be a commercially available on / off switch such as a push type or a lever type.
[0016]
The switch 12 is connected to a relay board 6 and a stabilized power source 7 (for example, a dry battery).
The display lamp 14 for displaying on / off of the switch 12 uses a commercially available color lamp and is attached to a predetermined portion of the counter body 1.
Further, a paper filter 15 made of synthetic resin or cellophane for adjusting the amount of light received by the optical sensor 4 is detachably attached or fixed with an adhesive or the like in the vicinity of the light receiving window 3 and the optical sensor 4. Is also possible.
[0017]
The relay board 6 will be described in detail with reference to the block diagram of FIG.
[0018]
The optical sensor 4 can detect a change in the amount of light with Cds (cadmium sulfide cell).
The change in the amount of light captured is amplified by the amplifying unit 8. The + change (dark → bright change) and −change (bright → dark change) detection unit 13 detects the +, − change by dividing the threshold voltage of the voltage of the input unit with a resistance, and detects the change in the amount of light. Detect and send a pulse.
[0019]
Next, when the one-shot timer unit 14 sets a detection time of 3 to 5 seconds, the transmitted pulse is transmitted to the relay drive unit 16 only once every 3 to 5 seconds.
[0020]
The relay drive unit 16 turns on, for example, an LED display lamp 14 via the relay unit 17.
[0021]
On the other hand, the pulses of the relay drive unit 16 are counted by the counting unit 9 electrically connected to the relay 17 and displayed on the counter display unit 10 as a count.
[0022]
In addition, since the stabilized power source 7 made of a dry battery or the like is connected to the relay board 6 via the power switch 12, the relay board 6 is activated by turning on the power switch 12, and the optical sensor 4 moves the person or the like. Is regarded as a change in the amount of light.
Further, a sensitivity adjustment dial 19 of the optical sensor 4 connected to the relay board 6 is provided on the rear surface 11 of the counter body 1, and the sensitivity can be freely adjusted by turning the dial 19.
[0023]
Although the embodiments of the present invention have been described with reference to the drawings, the specific configuration is not limited to these embodiments, and modifications and additions within the scope of the present invention are included in the present invention. It is.
[0024]
【The invention's effect】
According to the present invention, the following effects can be obtained.
[0025]
(A) According to the invention described in claim 1, since it is configured such that a person or an object approaches or changes the amount of light passing therethrough, can be converted into a count and displayed on the counter display section. By installing this counter at the location to be investigated, it is possible to accurately count the number of people who pass without requiring human labor, and a significant reduction in labor costs can be expected.
[0026]
In addition, it is possible to check whether the investigation is possible by checking whether the display lamp is lit.
[0027]
(B) According to the invention described in claim 2 , since the dry battery is used as the power source, the counter of the present invention can be freely carried and installed anywhere.
[Brief description of the drawings]
FIG. 1 is a front view of a counter according to the present invention.
FIG. 2 is a rear view of a counter according to the present invention.
FIG. 3 is a side view of a counter according to the present invention.
FIG. 4 is a plan view of a counter according to the present invention.
FIG. 5 is a bottom view of a counter according to the present invention.
FIG. 6 is a block diagram according to the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Counter main body 2 Front surface 3 Light reception window 4 Optical sensor 5 Bottom part 6 Relay board 7 Stabilized power supply 8 Amplification part 9 Counting part 10 Counter display part 11 Rear surface 12 Switch 13 Detection part 14 One shot timer part 15 Filter 16 Relay drive part 17 Relay Part 18 Push button 19 Sensitivity adjustment dial

Claims (2)

A counter body including a switch for turning on and off the power, a display lamp, and a counter display unit, and having a light receiving window;
An optical sensor that receives electromagnetic waves radiated from an object having temperature through the light receiving window, and converts a change in the amount of received light into an electrical signal;
An amplifying unit for amplifying the electrical signal;
A detection unit that detects a change in light amount based on an electrical signal corresponding to a change in the amount of light amplified by the amplification unit, detects a change in light amount from dark to bright and changes from light to dark, and transmits a pulse. When,
A one-shot timer unit for transmitting the pulse when the pulse transmitted from the detection unit is received in a set detection time;
A relay drive unit that operates in response to a pulse transmitted from the one-shot timer unit;
A relay unit connected to the relay drive unit, and performing a connection between the display lamp and a power source by an operation of the relay drive unit;
A counting unit that is electrically connected to the relay unit, counts pulses of the relay drive unit by operation of the relay drive unit, and displays the counter display unit;
A power source is connected via the switch to a relay board composed of the amplification unit, detection unit, one-shot timer unit, relay drive unit, and relay unit, and when the switch is turned on, the display lamp is turned on to investigate. A counter characterized by being able to check whether it is possible . The counter according to claim 1, wherein the power source includes a dry battery or the like.

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