CN114931374A - A kind of physical fitness testing device and testing method - Google Patents

Abstract

The invention provides a physical fitness test device and a physical fitness test method, relates to the technical field of physical fitness tests, and aims to solve the technical problem that the existing physical fitness test is inconvenient; the physical fitness testing device comprises a base, a first photoelectric sensor, a lifting mechanism and a cross beam; the base comprises a weighing platform and two stand columns, wherein the two stand columns are respectively arranged on two sides of the weighing platform; the number of the first photoelectric sensors is a plurality, each first photoelectric sensor comprises a first transmitting end and a first receiving end, each first transmitting end is arranged on one of the two stand columns at intervals along the height direction of the stand column, and each first receiving end is correspondingly arranged on the other of the two stand columns; the lifting mechanism comprises a power unit and two supports, the two supports are correspondingly arranged on the two upright posts and driven by the power unit, and the two supports can synchronously ascend or descend on the upright posts; two ends of the cross beam are respectively arranged on the two brackets. The physical fitness test device can conveniently test physical fitness.

Description

A kind of physical fitness testing device and testing method

technical field

The invention relates to the technical field of physical fitness testing, in particular, to a name of a physical fitness testing device and a testing method.

Background technique

Physical fitness test is the detection and evaluation of the comprehensive ability of the human body in the process of adapting to the environment, including the detection and evaluation of the human body with the goal of improving health and basic activity ability, as well as the human body's competitive ability in sports competitions. testing and evaluation.

Common physical fitness tests include body shape, function and quality. Among them, body shape refers to the basic structural characteristics of the body, such as height, arm length, weight, etc.; and body function is the function of various organ systems in the body, such as various metabolic capabilities. , various blood sugar and the like; physical quality mainly includes speed, strength, endurance, sensitivity and flexibility. At present, common physical fitness tests generally require the assistance of coaches. For example, when measuring body shape, the coach needs to record, and when measuring physical fitness, the coach needs to count the number of movements of the subject. At present, some devices can automatically monitor the physical fitness test of the subject.

However, the functions of the existing equipment are relatively single, and when testing groups such as students or soldiers, multiple equipments are required, the cost is high, and the measurement is inconvenient.

SUMMARY OF THE INVENTION

To this end, the present invention proposes a name of a physical fitness test device and a test method, so as to solve the technical problem that the function of the existing test equipment is relatively single.

The technical scheme of the present invention is as follows:

In a first aspect, the present invention provides a physical fitness test device, comprising:

a base, including a weighing platform and two uprights, the two uprights are located on both sides of the weighing platform;

A first photoelectric sensor, there are several first photoelectric sensors, each of the first photoelectric sensors includes a first transmitting end and a first receiving end respectively, and each of the first transmitting ends is spaced along the height direction of the column. is arranged on one of the two uprights, and each of the first receiving ends is correspondingly arranged on the other of the two uprights;

The lifting mechanism includes a power unit and a bracket, the two brackets are correspondingly arranged on the two uprights, and are driven by the power unit, and the two brackets can rise or fall synchronously on the uprights;

A beam, two ends of the beam are respectively arranged on the two brackets.

Further, the lifting mechanism includes a motor, a lead screw and a guide rail; the motor is arranged on one of the two uprights, the lead screw is coaxially connected to the output shaft of the motor, and the guide rail is fixed On the other of the two uprights; one of the two brackets is threadedly connected with the lead screw, and the other of the two brackets is slidably arranged on the guide rail.

Further, the beam includes a main body section and an extension section, an outer periphery of one end of the main body section is provided with an external thread, the extension section is provided with a threaded hole, and the external thread is threadedly connected with the threaded hole;

The bracket located on the guide rail is provided with an insertion hole, and with the rotation of the extension section on the main body section, the extension section can be inserted into the insertion hole, or can be inserted from the insertion hole. inside out.

Further, a holding member is provided on the bracket located on the guide rail, and an elastic member is arranged between the holding member and the bracket,

Pushed by the elastic member, the gripping member can grip the guide rail;

The extended section can push the gripping member and compress the elastic member, so that the gripping member releases the guide rail.

Further, it also includes a second photoelectric sensor, and the second photoelectric device includes a second transmitting end and a second receiving end respectively; the second transmitting end and the second receiving end are separated on the two brackets .

Further, it also includes a control module, a touch screen, a fingerprint identification module, a communication module and a server; the control module is respectively connected with the weighing platform, each of the first photoelectric sensors, the touch screen, the fingerprint identification module, the communication module is electrically connected;

The fingerprint recognition module is used to identify the tester, the touch screen is used for the tester to click on the test items, the weighing platform is used to measure the tester's weight, the first photoelectric sensor is used to measure the tester's height, and so on. The communication module is used for data exchange between the control module and the server.

Further, a ranging module is also provided on the base, and the ranging module is connected with the control module; the ranging module is used to measure the distance between the base and the target, and send it to the The control module controls the touch screen to display the distance.

In a second aspect, the present invention provides a physical fitness testing method, using the above physical fitness testing device, comprising the following steps:

Identify the test subject;

Select test items;

The physical fitness test device and the test subject act according to the selected items.

Further, the described selection test item is to choose the pull-up test;

The actions performed by the physical fitness testing device and the subject according to the selected items include:

The person to be measured stands on the weighing platform and is blocked between each first transmitting end and the first receiving end, and the height of the person to be measured is determined by each first photoelectric sensor;

Adjust the height of the beam according to the height of the test subject;

The person to be tested begins to perform pull-ups and counts;

Among them, the counting method is: according to the tester's first maximum pull-up height to determine the maximum height of the test subject, and count as 1; within the test time, each time the test subject reaches the maximum rising height, the test subject will be tested. Increase the number of pull-ups by 1.

Further, the described selection test item is to select touch high jump;

The actions performed by the physical fitness testing device and the subject according to the selected items include:

After the physical fitness test device raises the beam to a certain height, remove the beam;

The person to be tested takes off at the predetermined position and touches high;

Calculate the touch height and jump height of the test subject;

Wherein, according to the height of the second photoelectric device and the time when the person to be tested blocks the second photoelectric sensor, the height of the person to be tested is calculated.

The working principle and beneficial effects of the present invention are:

In the physical fitness testing device and physical fitness testing method provided by the present invention, in the physical fitness testing device, a weighing platform and two uprights are arranged, and several first photoelectric sensors, a lifting mechanism and a beam are arranged on the two uprights; The sensors are arranged at intervals along the height direction of the column, so that the physical fitness testing device can measure the weight of the person to be measured by the weighing platform, measure the height of the person to be measured through the first photoelectric sensors, and can measure the height of the person to be measured through the first photoelectric sensors. The movements of the person with body displacement are counted. That is to say, the physical fitness test device can not only automatically measure the height of the test subject, but also automatically count various movements of the test subject, such as pull-ups, push-ups, sit-ups and squats, etc., with comprehensive functions. , which can easily test the physical fitness of group personnel.

Description of drawings

The present invention will be described in further detail below with reference to the accompanying drawings and specific embodiments.

1 is a front view of a physical fitness testing device provided by an embodiment of the present invention;

Fig. 2 is the partial enlarged view of A place in Fig. 1;

Fig. 3 is a partial enlarged view at B in Fig. 1;

4 is a top view of a physical fitness testing device provided by an embodiment of the present invention;

Fig. 5 is the sectional view at C-C place in Fig. 1;

FIG. 6 is another state view of the components of FIG. 5 .

FIG. 7 is a schematic diagram of a process of touching a height and jumping according to an embodiment of the present invention.

In the picture: 100-weighing platform, 210-first column, 220-second column, 310-first transmitter, 320-first receiver, 400-power unit, 410-motor, 411-lead screw, 412 -rail, 421-first bracket, 422-second bracket, 4221-insertion hole, 500-beam, 510-body section, 520-extension section, 600-clamping piece, 610-elastic piece, 710-second The transmitting end, 720-the second receiving end.

Detailed ways

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts are all related to the protection scope of the present invention.

This embodiment provides a physical fitness testing device, as shown in FIG. 1 to FIG. 4 , which includes a base, a first photoelectric sensor, a lifting mechanism, and a beam 500 . Wherein, the base includes a weighing platform 100 and two uprights, and the two uprights are located on both sides of the weighing platform 100; there are several first photoelectric sensors, and each first photoelectric sensor includes a first transmitting end 310 and a first photoelectric sensor respectively. A receiving end 320, each first transmitting end 310 is arranged on one of the two uprights at intervals along the height direction of the upright, and each first receiving end 320 is correspondingly arranged on the other of the two uprights; the lifting mechanism includes The power unit 400 and two brackets, the two brackets are correspondingly arranged on the two uprights, and driven by the power unit 400, the two brackets can rise or fall synchronously on the uprights; the two ends of the beam 500 are respectively arranged on the two brackets superior.

Referring to FIG. 1 , in this embodiment, by setting the above-mentioned weighing platform 100 , when the tester stands on the weighing platform 100 , the tester’s weight can be measured; , and several first photoelectric sensors arranged on the column, when the tester stands between the two columns, part of the first photoelectric sensor can be blocked, and the highest blocked first photoelectric sensor and the weighing platform 100 The distance between them can be used to know the height of the tester. It should be noted that the structures of the weighing platform 100 and each of the first photoelectric sensors may refer to the prior art, which will not be repeated here.

In addition, in this embodiment, by arranging a lifting mechanism and a beam 500, the lifting mechanism drives the beam 500 to rise or fall, so that the physical fitness testing device can be used for the tester to perform a pull-up test, and the lifting mechanism drives the beam 500. Lifting, so that the physical fitness test device can be better applied to the pull-up test for people of different heights.

For ease of description, in the following, one of the two uprights will be referred to as the first upright 210, the other upright will be referred to as the second upright 220, and the two brackets will be referred to as the first bracket 421 and the second bracket 422, respectively . Referring to FIG. 1 , the above-mentioned power unit 400 includes a motor 410 , a lead screw 411 and a guide rail 412 . The motor 410 is arranged on the first column 210 , and the lead screw 411 is rotatably arranged on the first column 210 and is coaxially fixed with the output shaft of the motor 410 , that is to say, the motor 410 can drive the lead screw 411 to rotate ; In this embodiment, a threaded through hole is provided on the first bracket 421, the threaded through hole is threadedly connected with the lead screw 411, and when the lead screw 411 rotates, the first bracket 421 can move along the axial direction of the lead screw 411 .

The guide rail 412 is fixed on the second column 220 , the second bracket 422 is provided with a guide hole, and the guide hole is sleeved on the second column 220 , so that the second bracket 422 can slide along the axial direction of the second column 220 .

Based on the above structure, when the beam 500 is connected between the first bracket 421 and the second bracket 422 , the rotation of the output shaft of the motor 410 will drive the lead screw 411 to rotate, and the rotation of the lead screw 411 will drive the first bracket 421 to rotate along the lead screw 411 The axial movement of the first bracket 421 will drive the second bracket 422 to move synchronously through the beam 500 .

In this embodiment, as shown in FIGS. 5 and 6 , an insertion hole 4221 is provided on the second bracket 422 ; and the beam 500 includes a main body section 510 and an extension section 520 ; wherein, on the outer circumference of one end of the main body section 510 An external thread is provided, and a threaded hole is provided on the extension section 520 , and the threaded hole is threadedly connected with the external thread on the main body section 510 . And with the rotation of the extension section 520 on the main body section 510 , the extension section 520 can be inserted into the insertion hole 4221 or pulled out from the insertion hole 4221 .

That is to say, through the screw connection between the extension section 520 and the main body section 510, the overall length of the beam 500 can be elongated or shortened by rotating the extension section 520; when the beam 500 is elongated, it can be inserted between the two Between two brackets, when the beam 500 is shortened, it can be taken out from between the two beams 500 . Wherein, when the beam 500 is inserted between the two brackets, the physical fitness testing device can be used for the pull-up test, and when the beam 500 is removed from the two brackets, the physical fitness testing device can be used for touching heights Jump test, the specific method of the physical fitness test device used for the touch height jump test is as follows.

Referring to FIGS. 5 and 6 , in this embodiment, the second bracket 422 is provided with a gripping member 600 , and an elastic member 610 is provided between the gripping member 600 and the second bracket 422 , and is driven by the elastic member 610 , the gripping member 600 can grip the guide rail 412 , and the above-mentioned extension section 520 can push the gripping member 600 and compress the elastic member 610 , so that the gripping member 600 can release the guide rail 412 .

That is to say, in the physical fitness testing device of this embodiment, when the beam 500 is inserted into the insertion hole 4221, that is, when the first bracket 421 and the second bracket 422 are connected through the beam 500, as shown in FIG. 5 . As shown, the beam 500 pushes the gripping member 600 and compresses the elastic member 610, so that the gripping member 600 releases the guide rail 412. At this time, the motor 410 can drive the first support 421 and the second support 422 to rise or fall.

When the beam 500 is disengaged from the insertion hole 4221, the elastic member 610 will push the holding member 600, so that the holding member 600 can hold the guide rail 412 tightly, that is, the guide rail 412 of the holding member 600 is in close contact, so that the holding member 600 can be tightly The friction force between the component 600 and the guide rail 412 prevents the second bracket 422 from sliding on the guide rail 412 , or maintains the position of the second bracket 422 on the guide rail 412 .

In general, in this embodiment, by arranging the beam 500 and the holding member 600 with the above-mentioned structure, when the first bracket 421 and the second bracket 422 are connected by the beam 500, the first bracket 421 and the second bracket 422 can be connected. When the first bracket 421 and the second bracket 422 are separated, the second bracket 422 can be kept in the current position, which is convenient for the next installation of the beam 500 between the first bracket 421 and the second bracket 422. It should be noted that the position of the first bracket 421 is maintained by the motor 410, and when the output shaft of the motor 410 does not rotate, the position of the first bracket 421 will also remain unchanged.

In this embodiment, the above-mentioned elastic member 610 is a spring.

The physical fitness testing device in this embodiment further includes a second photoelectric sensor, and the second photoelectric device includes a second transmitting end 710 and a second receiving end 720 respectively; the second transmitting end 710 and the second receiving end 720 are divided into on both of the brackets.

In this embodiment, by arranging the two second photoelectric sensors, the tester's jump height can be measured. The specific measurement method is as follows.

The physical fitness testing device of this embodiment further includes a control module, a touch screen, a fingerprint identification module, a communication module and a server; the control module is respectively electrically connected to the weighing platform 100, each first photoelectric sensor, the touch screen, the fingerprint identification module, and the communication module; The fingerprint recognition module is used to identify the tester, the touch screen is used for the tester to click on the test items, the weighing platform 100 is used to measure the tester's weight, the first photoelectric sensor is used to measure the tester's height, and the communication module is used for data in the control module. exchange with the server.

In this embodiment, by arranging the above modules, the physical fitness testing device can automatically record and summarize the test data of the subject to be tested; the specific usage of each module is detailed below. It should be noted that the control module, the touch screen, the fingerprint identification module, the communication module and the server side can all use existing products, which will not be repeated here.

In this embodiment, a distance measuring module is also provided on the base, and the distance measuring module is connected with the control module; the distance measuring module is used to measure the distance between the base and the target, and send it to the control module, and the control module controls the distance between the base and the target. The touch screen shows the distance.

In this embodiment, by setting the distance measuring module, the distance between the two physical fitness testing devices can be better measured, that is, the running distance can be conveniently defined, so that the physical fitness testing device can be conveniently used for running 's test.

Based on the above physical fitness test, the present embodiment also provides a physical fitness testing method. The physical fitness testing method applies the above physical fitness testing device, which includes the following steps: identifying the identity of the person to be tested; selecting a test item; Take action.

Wherein, identifying the identity of the person to be measured includes: collecting the fingerprint of the person to be measured through the fingerprint identification module, and the control module compares the fingerprint of the person to be measured with a pre-recorded fingerprint database, and then determines the identity of the person to be measured.

In some embodiments,

Select the test item as the option Body Shape Measurement.

The actions performed by the physical fitness testing device and the test subject according to the selected item include: the test subject stands on the weighing platform 100 and is blocked between each first transmitting end 310 and the corresponding first receiving end 320 . At this time, the weighing platform 100 can send the weight data of the person to be measured to the control module, and the control module simultaneously collects the height data of the person to be measured, and sends the above data to the server.

In some embodiments,

The selected test item is pull-up.

The physical fitness test device and the person to be tested perform actions according to the selected items, including:

The physical fitness testing device measures the height of the subject, and adjusts the height of the beam 500 according to the height of the subject.

The subject begins to perform pull-ups and counts.

Among them, the counting rule is: each first photoelectric sensor determines the maximum ascent height of the test subject according to the tester's first maximum pull-up height, and counts it as 1; within the test time, each subsequent maximum ascent height is reached. , add 1 to the number of pull-ups the subject has done.

In some embodiments,

The selected test item is push-up;

The physical fitness test device and the person to be tested perform actions according to the selected items, including:

The tester adjusts the position so that his head is between the two uprights;

The tester begins to perform push-ups and counts;

Among them, the counting rule is: when the test subject is in the ready state, each first photoelectric sensor determines the height of the subject's head; plus 1.

In some embodiments, the selected test item is a sit-up.

The physical fitness test device and the person to be tested perform actions according to the selected items, including:

The tester adjusts the position so that his head is between the two uprights after he is raised;

The tester begins to do sit-ups and counts;

Wherein, the counting rule is: each first photoelectric sensor determines the raised height of the test subject according to the first raised height of the test subject, and counts it as 1;

During the test time, the number of sit-ups of the test subject is increased by 1 each time the subsequent sit-up height is reached.

In some embodiments, the selected test item is a 100-meter run.

The physical fitness test device and the person to be tested perform actions according to the selected items, including:

The two physical fitness testing devices are arranged at an interval of 100 meters, wherein the distance between the two physical fitness testing devices can be adjusted by a range finder set on the base, so that the distance between the two physical fitness testing devices can reach 100 meters.

The testers use one physical fitness test device as the starting point and another test device as the end point for the running test.

According to the time difference when the first photoelectric sensor on the two physical fitness testing devices is blocked, the time for the tester to run 100 meters is determined.

It should be noted that the two physical fitness test devices can also be used for measurement of 1000 meters, 3000 meters, etc.; for example, taking a circle of 400 meters in a standard field as an example, the distance between the two physical fitness testing devices can be placed 200 meters. Running two laps plus 200 meters is 1000 meters, which has the same principle as the 100-meter test, and will not be repeated here.

In some embodiments,

The selected test item is touch high jump.

The physical fitness test device and the person to be tested perform actions according to the selected items, including:

After the physical fitness test device lifts the beam 500 to a certain height, the beam 500 is removed;

The person to be tested takes off at a predetermined position and touches the height. According to the time that the person to be tested blocks the second photoelectric sensor, the maximum height of the person to be tested is calculated.

Among them, the specific calculation principle is:

A schematic diagram of the take-off and fall process of the tester's touch-height jump is shown in Figure 7. In Figure 7, the three lines from bottom to top are the tester's take-off plane, the light emitted by the second emitting end 710, and the tester's theory. The maximum touch height;

During the take-off process, the tester's hand blocks the second photosensor for the first time at time t1; during the tester's descent, at time t2, the tester's hand detaches and blocks the second photosensor for the second time.

As shown in Figure 7, the height L1 of the second photoelectric sensor from the tester's take-off plane is known data;

The calculation formula of the height L2 of the tester's hand exceeding the second photoelectric sensor is:

L2=1/2*g*((t2-t1)/2)^2;

where g is the local gravitational acceleration.

Since the above data are known, the L2 value can be obtained by solving.

The maximum touch height H of the tester's maximum in-situ touch height jump is:

H=L1+L2.

It should be noted that the physical fitness test device can also be used for the test of the run-up and high-jump.

Compared with the existing solutions of hanging height signs on walls or columns, on the one hand, the data is not easy to observe and record by hanging height signs; Take off, and in the solution of this embodiment, during the takeoff process, there is no risk of encountering obstacles, and the risk of injury to the subject is small.

To sum up, the physical fitness testing device and physical fitness testing method of the present invention can comprehensively and automatically test the physical fitness of the subject to be tested, and the data can be automatically collected, which is suitable for physical fitness testing of batches such as students and troops.

The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention. within.

Claims (10)

1. A fitness test device, comprising:

the base comprises a weighing platform (100) and two upright columns, wherein the two upright columns are respectively arranged on two sides of the weighing platform (100);

the number of the first photoelectric sensors is a plurality, each first photoelectric sensor comprises a first emitting end (310) and a first receiving end (320), each first emitting end (310) is arranged on one of the two upright posts at intervals along the height direction of the upright post, and each first receiving end (320) is correspondingly arranged on the other of the two upright posts;

the lifting mechanism comprises a power unit (400) and supports, the two supports are correspondingly arranged on the two upright posts and driven by the power unit (400), and the two supports can synchronously ascend or descend on the upright posts;

the two ends of the cross beam (500) are respectively arranged on the two brackets.

2. The fitness test device of claim 1, wherein the lifting mechanism comprises a motor (410), a lead screw (411) and a guide rail (412); the motor (410) is arranged on one of the two upright posts, the lead screw (411) is coaxially and fixedly connected with an output shaft of the motor (410), and the guide rail (412) is fixedly arranged on the other of the two upright posts; one of the two brackets is in threaded connection with the lead screw (411), and the other of the two brackets is slidably arranged on the guide rail (412).

3. The physical fitness test device according to claim 2, wherein the cross beam (500) comprises a main body section (510) and an extension section (520), wherein an external thread is arranged on the periphery of one end of the main body section (510), a threaded hole is arranged on the extension section (520), and the external thread is in threaded connection with the threaded hole;

the support on the guide rail (412) is provided with an insertion hole (4221), and the extension section (520) can be inserted into the insertion hole (4221) or be removed from the insertion hole (4221) along with the rotation of the extension section (520) on the main body section (510).

4. The fitness test device according to claim 3, wherein a clasp (600) is provided on the support on the guide rail (412), and an elastic member (610) is provided between the clasp (600) and the support,

the clasping piece (600) can clasp the guide rail (412) pushed by the elastic piece (610);

the extended segment (520) is capable of pushing the clasp (600) and compressing the resilient member (610) to cause the clasp (600) to release the rail (412).

5. The fitness test device of claim 4, further comprising a second photosensor, the second photosensor comprising a second emitting end (710) and a second receiving end (720), respectively; the second transmitting end (710) and the second receiving end (720) are respectively arranged on the two brackets.

6. The physical fitness test device according to any one of claims 1 to 5, further comprising a control module, a touch screen, a fingerprint identification module, a communication module and a server terminal; the control module is respectively and electrically connected with the weighing platform (100), each first photoelectric sensor, the touch screen, the fingerprint identification module and the communication module;

the fingerprint identification module is used for identifying a tester, the touch screen is used for allowing the tester to click a test item, the weighing platform (100) is used for measuring the weight of the tester, the first photoelectric sensor is used for measuring the height of the tester, and the communication module is used for exchanging data between the control module and the server.

7. The physical fitness test device of claim 6, wherein the base is further provided with a distance measurement module, and the distance measurement module is connected with the control module; the distance measurement module is used for measuring the distance between the base and the target object and sending the distance to the control module, and the control module controls the touch screen to display the distance.

8. A fitness test method using the fitness test device according to any one of claims 1 to 7, comprising the steps of:

identifying the identity of a person to be tested;

selecting a test item;

the physical fitness test device and the person to be tested act according to the selected items.

9. The fitness test method of claim 8,

the selected test item is a selected pull-up test;

the physical fitness test device and the person to be tested performing actions according to the selected items comprise:

the person to be measured stands on the weighing platform and is blocked between each first transmitting end and each first receiving end, and the height of the person to be measured is determined by each first photoelectric sensor;

adjusting the height of the beam according to the height of the person to be measured;

starting the person to be tested to pull up and counting;

wherein, the mode of count does: determining the maximum rising height of the testee according to the first maximum pull-up height of the testee, and counting to be 1;

in the test time, the number of times of the pull-up of the testee is increased by 1 when the testee reaches the maximum rising height every time.

10. The physical fitness test method of claim 8,

selecting a test item as a high jump;

the physical ability testing device and the person to be tested act according to the selected items, and the physical ability testing device and the person to be tested comprise the following steps:

after the physical ability testing device lifts the cross beam to a certain height, the cross beam is taken down;

jumping and reaching high at a preset position by a person to be tested;

calculating the height jump of the person to be measured;

and calculating the height jump of the person to be measured according to the height of the second photoelectric device and the time for the person to be measured to block the second photoelectric sensor.

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