JP2022129216A - Measurement device and diagnosis device of tensioning force, and inspection system - Google Patents

Abstract

To inspect a tensioning force of a tension device such as a ground anchor easily and efficiently.SOLUTION: A measurement circuit board 29 and a physical property sensor (a strain sensor) 23 are assembled into an anchor plate 37 of a ground anchor 3. The measurement circuit board 29 detects physical property change of the anchor plate 37 using the physical property sensor 23 to measure a tensioning force of the ground anchor 3 and transmits the measurement data to an outside by radio. The measurement circuit board 29 and the physical property sensor 23 are covered by protective materials 45, 47. On the protective material 45 of the measurement circuit board 29, a marker protrusion 49 exhibiting a position of the measurement circuit board 29 is provided.SELECTED DRAWING: Figure 3

Description

The present invention is for measuring and diagnosing the tension in a tensioning device such as a ground anchor, an anchor bolt, or a sling that uses tension to fix or support an object such as a structure at a specific location. and systems combining these devices.

For example, known techniques for inspecting the tension of ground anchors are disclosed in Patent Documents 1 to 3, for example.

Patent Literature 1 discloses an invention relating to a ground anchor lift-off test. Patent Literature 2 discloses a technique of mounting a magnetic permeability sensor on an anchor plate during inspection. Patent Literature 3 discloses a technique in which a measurement piece is preliminarily sandwiched between a nut on the head of a ground anchor and an anchor plate, and a detection probe is brought into contact with the surface of the measurement piece during inspection.

Japanese Patent Application Laid-Open No. 2011-231515 Japanese Patent Application Laid-Open No. 2002-048659 Japanese Patent Application Laid-Open No. 2007-101205

A lift-off test such as that described in Patent Document 1 requires a heavy jack, a lot of work, and a long time, is expensive to inspect, and is inefficient. Compared to this, according to the techniques described in Patent Document 2 and Patent Document 3, the labor and cost of the inspection are small. However, in the case of the technique described in Patent Document 2, the surface of the dirty anchor plate is washed before inspection, and in the case of the technique described in Patent Document 3, the protective cap of the anchor head is removed before inspection and after inspection. Considerable work and time are required for pre-examination preparation and post-examination clean-up, such as re-attachment of the device.

SUMMARY OF THE INVENTION It is an object of the present invention to make tension testing easier and more efficient.

A tension force measuring device according to one embodiment is applied to a tension device having the following configuration. That is, the tension device has a tendon having a head, and a washer having a flange portion interposed between the head of the tendon and the object and projecting outward from the head. Then, the head presses the object through the washer.

A measuring device according to one embodiment applied to such a tensioning device includes the washer, a physical property sensor fixed to the flange portion of the washer, and a physical property sensor fixed to the flange portion of the washer and attached to the physical property sensor. and a measurement circuit board electrically connected.

The measurement circuit board measures a physical property change occurring in the flange portion of the washer according to the tension force through the physical property sensor, and wirelessly transmits measurement data indicating the measurement result to the outside. be done.

When the washer has a polygonal shape in plan view, the physical property sensor may be arranged on or near the diagonal line of the surface of the flange portion of the washer.

Further, a sensor protective material that covers and protects the physical property sensor from the outside may be fixed to the flange portion of the washer. Similarly, a circuit protector covering and protecting the measuring circuit board from the outside may be fixed to the flange portion of the washer.

Furthermore, a marker projection may be provided on the flange portion of the washer near the measurement circuit board.

Further, when a protective cap that protects the head of the tendon is fixed to the surface of the flange portion of the washer, the physical property sensor may be arranged inside the protective cap of the flange portion.

A diagnostic system for a tensioning device, according to one embodiment, is applied to the tensioning device as follows. That is, it is a tensioning device with a measuring device that wirelessly transmits tension force measurement data.

A diagnostic device according to one embodiment, applied to such a tensioning device, comprises a communication antenna for wirelessly receiving the measurement data from the measuring device, and an activation device that turns on when pressed against a predetermined location of the tensioning device. a switch mechanism; a diagnostic circuit for executing an inspection process in response to turning on of the activation switch mechanism;

Then, in the inspection process, the diagnostic circuit receives the measurement data from the measurement circuit through the communication antenna, diagnoses the tension using the received measurement data, and performs a diagnosis according to the diagnosis result. to cause the diagnostic lamp to emit light.

Further, the diagnostic device according to one embodiment has an overall size and weight that allows it to be carried in one hand by an operator.

A diagnostic apparatus according to one embodiment comprises a bar-shaped handle for an operator to hold by hand, the communication antenna and the activation switch mechanism are arranged at one end of the handle, and an extension arm is provided at the other end of the handle. A connection is provided for connection.

The diagnostic circuit may comprise means for storing the measurement data and the diagnosis result, and means for transmitting the measurement data and the diagnosis result to an external general-purpose information processing terminal.

A testing system for a tensioning device, according to one embodiment, comprises a measuring device and a diagnostic device as described above.

1 shows a system configuration of a tension test system according to one embodiment; The block configuration of the measuring device of the same system is shown. The partial cross section view of the principal part of the ground anchor with which the same measuring apparatus was integrated is shown. The plane arrangement on the anchor plate of the same measuring device is shown. The side view of the diagnostic device of the same system is shown. The front view of the same diagnostic apparatus is shown. The bottom view of the same diagnostic apparatus is shown. The flow of the inspection process of the same diagnostic device is shown.

A tension testing system (hereinafter referred to as the present system) according to one embodiment applied to tension testing of ground anchors will be described below.

FIG. 1 shows the system configuration of this system.

As shown in FIG. 1, the system 1 has a measuring device 5, a diagnostic device 7, a display communication device 9, and a management device 11. FIG.

The measuring device 5 is already incorporated in the ground anchor 3 when the installation of the ground anchor 3 is completed, and thereafter always remains mounted on the ground anchor 3 both during inspection and during non-inspection. In a site where multiple ground anchors 3 are installed, one measuring device 5 can be installed in each ground anchor 3 .

The measuring device 5 has a function of measuring changes in physical properties, such as the magnitude of mechanical strain, caused in the anchor plate of the ground anchor 3 (see FIG. 3, which will be described later) due to the tension of the ground anchor 3 . The inspection device 5 stores the identification code (hereinafter referred to as ID) of the ground anchor 3, and can transmit the measurement data 15 including the measurement result and the ID to the diagnostic device 7 in a contactless (wireless) manner.

Diagnosis device 7 has an overall size and weight that allows an operator to carry and operate it with one hand, and is spatially separated from inspection device 5 . The diagnostic device 7 is configured to initiate an inspection process when an operator presses it against a marker projection (described below, see FIG. 3) provided on the ground anchor 3 .

When the diagnostic device 7 starts the inspection process, the diagnostic device 7 first supplies the driving power 13 to the measuring device 5 in a non-contact (wireless) manner to activate the measuring device 5 , and then the measurement device 5 sends the It receives the measured data 15 in a non-contact (wireless) manner. Subsequently, the diagnostic device 7 stores the received measurement data 15 in the diagnostic device 7 and diagnoses the tension of the ground anchor 3 using the measurement data 15 .

The diagnostic result of tension can be, for example, three levels of normal, abnormal, and caution (for example, a state where the nut of the anchor head should be retightened). Subsequently, the diagnostic device 7 associates the diagnostic result with the ID of the ground anchor 3 and saves it in the diagnostic device 7, and uses a method that allows the operator to recognize with the five senses (for example, sight and hearing). The diagnostic results are displayed by the illumination of lamps in different colors of green, red and yellow for normal, abnormal and caution respectively. The time required for the above series of inspection processes is about 2 to 3 seconds. Even at a site where many ground anchors 3 exist, the operator can efficiently diagnose all the ground anchors 3 in a short time while grasping the diagnostic results of each ground anchor 3 in real time.

The diagnostic device 7 further transmits diagnostic data 17 including measurement data 15 and diagnostic results of one or more ground anchors 3 stored in the diagnostic device 7 to the external display communication device 9 in a contactless (wireless) manner. can do.

The display communication device 9 has a role of relaying communication of diagnostic data between the diagnostic device 7 and the remote management device 11, and a role of analyzing and displaying inspection data of the ground anchor 3 in detail. It is desirable that the display communication device 9 be capable of communication using a wide-area communication network such as the Internet or a mobile communication network, have a display screen for displaying detailed information, and be capable of performing complex information processing. In that respect, for example, a popular general-purpose information processing device such as a so-called smart phone, tablet terminal, or personal computer can be employed as the display communication device 9 .

The display communication device 9 receives diagnostic data 17 of one or more ground anchors 3 from the diagnostic device 7 and displays the details of each diagnostic data 17 on a display screen and analyzes each diagnostic data 17. and display the analysis results on the display screen. Furthermore, the display communication device 9 saves the diagnostic data 17 of one or more ground anchors 3 and the analysis results thereof in the display communication device 9, and also transmits the saved diagnostic data 17 and the analysis results thereof through the communication network. Send to the remote management device 11 .

The management device 11 receives detailed diagnostic data 19 of one or more ground anchors 3 from the display communication device 9 and stores the received detailed diagnostic data 19 in the management device 11 . The management device 11 uses the stored detailed diagnostic data 19 to perform information processing for maintenance and inspection management of each site where a plurality of ground anchors are installed and maintenance and inspection management of each ground anchor 3 .

FIG. 2 shows a block configuration of the measuring device 5. As shown in FIG.

As shown in FIG. 2, the measuring device 5 includes a measuring circuit 21, one or more physical property sensors, for example, one or more strain sensors 23, a power receiving antenna (power receiving coil) 25, and a communication antenna (communication coil) 27. have. The measurement circuit 21 is electrically connected to the strain sensor 23 , the power receiving antenna (power receiving coil) 25 and the communication antenna (communication coil) 27 .

The strain sensor 23 as a physical property sensor senses changes in physical properties that occur in an anchor plate (see FIG. 3, which will be described later) according to the tension of the ground anchor 3, such as mechanical strain of the anchor plate. The strain sensor 23 is, for example, a resistance strain gauge using semiconductor or metal, and is fixed to the surface of the anchor plate.

The measurement circuit 21 is an electronic circuit that uses a strain sensor 23 to measure a value corresponding to the magnitude of mechanical strain of the anchor plate, and a known configuration can be adopted for its specific configuration. The measured value measured by the measuring circuit 21 substantially indicates the tension magnitude of the ground anchor 3 . The measurement circuit 21 stores the ID of the ground anchor 3 on which it is mounted, and transmits the measurement data 15 including the ID and the above measured values to the external diagnostic device 7 through the communication antenna (communication coil) 27. can be sent to

The measuring circuit 21 does not have a built-in power supply, and is activated when it receives the driving power 13 from the diagnostic device 7 through the power receiving antenna (power receiving coil) 25, and performs the above operation.

The measurement circuit 21, the power receiving antenna (power receiving coil) 25, and the communication antenna (communication coil) 27 are mounted on, for example, a single circuit board and formed into a thin flat plate (or sheet or film) (hereinafter referred to as the measurement circuit board ) 29 . This measurement circuit board 29 is then fixed on the surface of the anchor plate of the ground anchor 3 .

FIG. 3 shows a partial cross-sectional view of the main part of the ground anchor 3 incorporating the measuring device 5 described above.

As shown in FIG. 3, the ground anchor 3 has an elongated tendon 31, and the main body of the tendon 31 (lower portion not shown in FIG. 3) is fixed to, for example, the underground ground. A head portion 31A of the tendon 31 penetrates an object 33 such as a structure on the ground surface and protrudes to the surface of the object 33 . A head portion 31A of the tendon 31 has a male thread, and a nut 35 is screwed onto the male thread. A washer or anchor plate 37 is sandwiched between the nut 35 and the object 33 . The anchor plate 37 is generally a steel plate having a polygonal (typically square or rectangular) shape when viewed from above, and is provided with a through hole in its center, through which the tendon 31 is inserted. Head 31A is inserted. Since the area of the anchor plate 37 in plan view is much larger than the nut 35, the anchor plate 37 has a portion projecting outward beyond the nut 35, and this portion is called a flange portion.

By tightening the nut 35, the nut 35 presses the object 33 via the anchor plate 37, and at the same time the tendon 31 is tensed, and the tensed force produces a pressing force. At that time, a stress having a magnitude corresponding to the magnitude of the tension is generated in each portion of the anchor plate 37, and changes in physical properties, such as mechanical strain, occur according to the magnitude of the stress.

Among the ground anchors 3, the structure for pressing the anchor plate 37 including the head 31A of the tendon 31 and the nut 35 screwed thereon is called an anchor head 39 here. The anchor head 39 is covered with an anchor cap 41 for protecting it from the outside. The anchor cap 41 is a cylindrical body with a closed top and has a cap nut 43 inside. The anchor cap 41 is fixed to the anchor head 39 by screwing the cap nut 43 onto the head 31A of the tendon 31 . The hem at the lower end of the anchor cap 41 is in close contact with the surface of the anchor plate 37 to prevent moisture from entering from the outside.

A measurement circuit board 29 and one or more strain sensors 23 (23A, 23B, 23C, etc.) constituting the measurement circuit 5 are fixed on the surface of the flange portion (the portion that protrudes outward from the anchor head 39) of the anchor plate 37. be. All of the measuring circuit board 29 , or at least part of the power receiving and communication antenna, is arranged outside the anchor cap 41 on the surface of the anchor plate 37 . Accordingly, communication with the diagnostic device 7 and power reception are less likely to be interfered with by the anchor cap 41 . In addition, the position between the power receiving/communication antennas (power receiving/communication coils) 25, 27 (see FIG. 2) of the measuring circuit board 29 and the anchor plate 37, for example, the surface of the measuring circuit board 29 in contact with the anchor plate 37 has A plate (film or sheet) 42 made of a magnetic material (for example, ferrite) is provided for electromagnetic shielding, which suppresses the energy of power supply and communication from being absorbed by the anchor plate 37 .

One or more strain sensors 23 (23A, 23B or 23C) may be located inside the anchor cap 41, such as strain sensor 23B, or may be located inside anchor cap 41, such as strain sensors 23A and 23C. It may be arranged outside. The strain sensor 23 arranged inside the anchor cap 41 is protected by the anchor cap 41 .

The measuring circuit board 29 and the strain sensors 23 (23A and 23C) arranged outside the anchor cap 41 on the surface of the anchor plate 37 are covered with protective materials 45 and 47 for protecting them from the outside. For example, the measurement circuit board 29 is covered with a protective material (plate, sheet, film or coating layer) 45 fixed on the surface of the anchor plate 37 and made of a material that does not affect contactless power supply and wireless communication. Also, the strain sensor 23 may be protected together with the measuring circuit board 29 by the same protective plate 45, for example strain sensor 23A, or may be protected on the surface of the anchor plate 37, for example strain sensor 23C. may be protected by another protective material (plate, sheet, film or coating layer) 47 fixed to the .

A marker projection 49 is provided on the outer surface of the protective material 45 covering the measurement circuit board 29 . The marker projection 49 is, for example, a cylindrical projection with a diameter of about 2-3 cm and a height of about 1-2 cm. When the operator presses the diagnostic device 7 against the marker projection 49, the diagnostic device 7 automatically starts the inspection process.

FIG. 4 shows an example of planar arrangement of the measurement circuit board 29 and the strain sensor 23 constituting the measurement device 5 on the anchor plate 37 .

As shown in FIG. 4 , the measuring circuit board 29 is arranged on the surface of the portion of the flange portion of the anchor plate 37 that protrudes outward from the nut 35 , protruding outward from the anchor cap 41 . One or more strain sensors 23 (23D, 23E, 23F, 23G, 23H or 23J) are positioned diagonally 51 on the surface of the flange portion of anchor plate 37, such as strain sensors 23D, 23E, 23F. or in the vicinity of the diagonal line 51, such as the strain sensors 23G, 23H, 23J.

According to computer simulation analysis of the distribution of stress generated in the anchor plate 37 due to the tension force, the closer the nut 35 located in the center of the anchor plate 37 is, the greater the stress is, and the distance from the nut 35 is the same. If so, there is a tendency that the closer to the diagonal line 51 of the polygonal planar shape of the anchor plate 37, the greater the stress. That is, the portion directly pressed by the nut 35 has the highest stress. In the outwardly protruding flange portion of the nut 35, the portion 51 surrounded by the two-dot chain line and indicated by the dense satin finish has the second highest stress. Furthermore, the portion 55 indicated by the coarse pear-skinned area surrounded by the dashed-dotted line has the third highest stress, and the portion indicated by the white-skinned area further outside thereof has the lowest stress. According to such a stress distribution of the anchor plate 37, placing the strain sensor 23 on or near the diagonal line 51 on the surface of the flange portion increases the sensitivity of measurement of strain caused by stress. preferred. In addition, a position closer to the nut 35 on or near the diagonal 51, for example, a position inside the anchor cap 41, or within a half of the distance from the center to the corner end of the diagonal 51 toward the center It is preferable to dispose the strain sensor 23 in the distance range of and its neighboring area (that is, the area 53 in the figure).

5, 6 and 7 show side, front and bottom views of diagnostic device 7, respectively.

As shown in FIGS. 5, 6 and 7, the diagnostic device 7 has a bar-shaped handle 3 that can be grasped by an operator with one hand. A battery case 63 and a main circuit case 65 are provided at the rear end of the handle 3 . An antenna case 67 is provided at the front end of the handle 3 .

A battery 71 that is a power source for the diagnostic device 7 is accommodated in the battery case 63 . A main circuit board 73 is accommodated in the main circuit case 65 . The main circuit board 73 has a diagnostic circuit for receiving measurement data from the measuring device 5 of the ground anchor 3 and diagnosing the tension of the ground anchor 3 . The main circuit board 73 also has communication circuitry for wireless and wired communication with the external display communication device 9 . Further, the main circuit board 73 is electrically connected to various electrical components (described later) inside the antenna case 67 .

A main power switch 75 is provided on the outer surface of the main circuit case 65 for the operator to turn on and off the power of the main circuit board 73 . An illumination switch 77 is provided on the outer surface of the main circuit case 65 near the handle 62 for the operator to turn on/off the illumination lamp 89 of the antenna case 67 .

The antenna case 67 has a flat front surface 67A at the farthest position from the handle 61. As shown in FIG. A disk-shaped switch plate 81, for example, is provided in the central portion of the front surface 67A. The switch plate 81 is movable in the front-rear direction by a small distance of about 0.5 to 1 cm, and is moved forward by a spring member 83 arranged behind the switch plate 81 in the antenna case 67 . is elastically pushed to Also, behind the switch plate 81, an activation switch 85 is arranged which is turned on by the retreat of the switch plate 81. As shown in FIG. In response to turning on the activation switch 85, the main circuit board 73 initiates the inspection process (measurement data receiving operation and tension diagnostic operation).

An antenna set 87 is also accommodated within the antenna case 67 . The antenna set 87 has a feeding antenna (feeding coil) for contactlessly feeding power to the measuring device 5 and a communication antenna (communication coil) for wirelessly receiving measurement data from the measuring device 5 . The antenna set 87 is arranged near the front surface 67A in the antenna case 67 and near the switch plate 81, for example.

Furthermore, one or more illumination lamps 89 are provided on the front surface 67A of the antenna case 67. As shown in FIG. The illumination lamp 89 illuminates the front (lower side in the figure) of the antenna case 67 with light. The illumination lamp 89 is turned on and off by an illumination switch 77 provided near the handle 61 . An illumination lamp 89 helps the operator to visually locate the ground anchor 5 when inspecting in a dark site.

One or more diagnostic lamps 91 are provided on the rear surface 67B of the antenna case 67 facing the handle 61 and not hidden behind the hand holding the handle 67 when viewed from the operator. A diagnostic lamp 91 is driven by the main circuit board 73 to display diagnostic results. The diagnostic lamp 91 can illuminate in four different colors, for example blue, green, red and yellow. When the main circuit board 73 starts the inspection process, first, the diagnostic lamp 91 is lit blue, for example, and then when the diagnostic result comes out, for example, green for normal, red for abnormal, and yellow for caution. The diagnosis lamp 91 is lit in a color corresponding to the result.

A connecting portion (for example, a screw hole) 11 for connecting an extension arm (not shown) is provided at the rear end portion of the diagnostic device 7 farthest from the antenna case 67 . By connecting the extension arm to the connection part of the diagnostic device 7, the diagnostic device 7 can reach the ground anchor 3 which is out of reach of the operator to inspect it.

When inspecting the ground anchor 3, the operator grasps the handle 61 of the diagnostic device 7 by hand and moves the switch plate 81 on the front surface 67A of the antenna case 67 to the marker projection 49 on the anchor plate 37 of the ground anchor 3 (Fig. 3). The diagnostic device 7 then initiates the examination process.

FIG. 8 shows the flow of the inspection process of diagnostic device 7 .

As shown in FIG. 8, the diagnostic device 7 continues to periodically check whether the activation switch 85 is turned on in step S1 when the main power supply is on. When the turn-on of activation switch 85 is detected, the testing process begins. In the inspection process, power is supplied to the measuring device 5 in step S2. Measurement data is received from the measurement device 5 in step S3. In step S4, the power supply to the measuring device 5 is terminated, and in step S5, the tension is diagnosed using the received measurement data, and the diagnostic results are stored in the diagnostic device 7. FIG. At step S6, the diagnosis lamp 91 lights up in a color corresponding to the diagnosis result.

The embodiments described above are merely examples for explanation, and are not meant to limit the scope of the present invention to only those embodiments. The present invention can be embodied in various forms other than the embodiments described above.

The present invention can also be applied to tensioning devices other than ground anchors, such as anchor bolts, slings, fastening bolts, and the like. In addition, the diagnostic device according to the present invention is not only applicable to the tension device in which the measuring device is incorporated in the washer as in the above-described embodiment. It can also be applied to those in which the measuring device is incorporated in the head or body of the tendon, such as the fastening bolt described. For example, when applying the diagnostic device according to one embodiment to the fastening bolt described in Japanese Patent Application Laid-Open No. 2020-177034, if the switch plate of the diagnostic device is pressed against the head of the fastening bolt, the diagnostic device automatically inspects. I do.

1 Inspection system 3 Ground anchor (tension device)
5 measuring device 7 diagnostic device 9 display communication device 11 management device 13 drive power 15 measurement data 17 diagnostic data 25 power receiving antenna 27 communication antenna 21 measurement circuit 29 measurement circuit board 23 strain sensor (physical property sensor)
31 tendon 33 object 35 nut 37 anchor plate (washer)
39 anchor head 41 anchor cap (protective cap)
45, 47 Protective material 49 Marker projection 51 Diagonal line 61 Handle 63 Battery case 65 Main circuit case 67 Antenna case 71 Battery 73 Main circuit board 81 Switch board 83 Spring member 85 Starting switch 87 Antenna set 89 Lighting lamp 91 Diagnostic lamp

Claims (10)

a tendon having a head; and a washer having a flange portion interposed between the head of the tendon and the object and projecting outward from the head. A device for measuring the tension of the tendon for a tensioning device configured to press the mating object through a washer,
the washer;
a physical property sensor fixed to the flange portion of the washer;
a measurement circuit board fixed to the flange portion of the washer and electrically connected to the physical property sensor;
The measurement circuit board is configured to measure, through the physical property sensor, changes in physical properties that occur in the flange portion of the washer according to the tension force, and to wirelessly transmit measurement data indicating measurement results to the outside. ,
measuring device. The measuring device according to claim 1,
The measuring device according to claim 1, wherein the physical property sensor is arranged on or near a diagonal line of the surface of the flange portion of the washer when the washer has a polygonal shape in plan view. In the measuring device according to any one of claims 1 and 2,
a sensor protection member fixed to the flange portion of the washer and covering and protecting the physical property sensor from the outside;
a circuit protection material fixed to the flange portion of the washer and covering and protecting the measurement circuit board from the outside;
A measuring device further comprising: In the measuring device according to any one of claims 1 to 3,
The measurement device further comprising a marker projection secured to the flange portion of the washer adjacent the measurement circuit board. In the measuring device according to any one of claims 1 to 4,
A measuring device, wherein when a protective cap for protecting the head of the tendon is fixed to the surface of the flange of the washer, the physical property sensor is arranged inside the protective cap of the flange. In the measuring device according to any one of claims 1 to 5,
The measurement circuit board includes a power receiving antenna for receiving power from the outside without contact, a communication antenna for wirelessly communicating with the outside, and an electromagnetic field disposed between the power receiving antenna and the communication antenna and the washer. and a magnetic member for target blocking. In a diagnostic device for a tension device with a measuring device that wirelessly transmits tension measurement data,
a communication antenna for wirelessly receiving the measurement data from the measurement device;
an activation switch mechanism that turns on when pressed against a predetermined location of the tensioning device;
diagnostic circuitry for performing a test process in response to turning on the activation switch mechanism;
a diagnostic lamp that emits light to display the diagnostic result determined by the diagnostic circuit;
The diagnostic circuit receives the measurement data from the measurement circuit through the communication antenna in the inspection process, diagnoses the tension using the received measurement data, and according to the result of the diagnosis, configured to cause a diagnostic lamp to indicate luminescence;
Further, the diagnostic device is configured to have an overall size and overall weight that can be held and carried in one hand by an operator. The diagnostic device of claim 7, wherein
Equipped with a rod-shaped handle for the operator to grasp by hand,
The communication antenna and the activation switch mechanism are arranged at one end of the handle,
A connecting part for connecting an extension arm is provided at the multi-end of the handle,
diagnostic equipment. In the diagnostic device according to any one of claims 7 and 8,
The diagnostic circuit
means for storing the measurement data and the diagnostic results;
and means for transmitting the measurement data and the diagnosis result to an external general-purpose information processing terminal. A test system for a tension device, comprising a measuring device according to claim 1 and a diagnostic device according to claim 7.

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