JP2006118964A - Load testing machine - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a load testing machine setting easily a test condition or a test result when performing a test, and improving workability. <P>SOLUTION: This load testing machine is equipped with a load cell 2 for measuring the load by applying the load to a test object, and a moving device 3 equipped with a slide mechanism for changing the relative distance between the load cell 2 and the test object, and is used for measuring a load displacement characteristic by applying a prescribed load or displacement to the test object. The load testing machine is also equipped with: a reading device 4 for reading an IC tag 10 wherein data for showing the test condition of the test object are stored; a control device for operating the moving device 3 and the load cell 2 according to the data read by the reading device 4; a USB interface 30 for transmitting a measurement result measured by the load testing machine and the data stored in the IC tag 10 to an external personal computer; and the like. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a load testing machine that applies a predetermined load to a test object and measures a load displacement characteristic in which the load and the displacement are associated with each other.

  Conventionally, in order to evaluate the physical properties of the DUT, such as mechanical strength and elastic force, a predetermined load and displacement are applied to the DUT and the load and displacement are correlated to obtain a load displacement characteristic. It has been broken. As a load cell that applies load and displacement to the DUT, it is generally equipped with a terminal for applying tension or pressing force to the DUT, and the load transmitted through the terminal is detected and displayed via the load sensor. (For example, refer to Patent Document 1).

  A load meter is attached to the slide mechanism, and the load meter is slid along the direction of displacement of the DUT, so that a load and displacement can be applied to the DUT and the load and displacement can be correlated and measured. There is a load testing machine (see, for example, Patent Document 2). Further, in the load testing machine configured as described above, the displacement of the DUT is detected from the slide movement amount of the load cell.

In general, when performing a test, the operator confirms information on the DUT, adjusts the speed and amount of displacement applied to the DUT according to the information, and loads each predetermined amount of displacement. The operation of reading the load through a meter and recording the result on a recording medium was repeatedly performed.
Japanese Patent Laid-Open No. 2001-208634 JP 7-45661 A

  As in the conventional example, the operator confirms information on the DUT and adjusts the speed and amount of displacement applied to the DUT according to the information, or through a load meter for each predetermined amount of displacement. According to the method of reading the load and recording the result on a recording medium, setting of test conditions and recording of the test result are complicated for the operator, and there is room for improving workability. Therefore, an object of the present invention is to provide a load testing machine capable of easily setting test conditions and test results and improving workability when performing a test.

  The invention according to claim 1, which has been made to achieve the above object, applies a load to the DUT, changes a relative distance between the load meter and the DUT, the load meter for measuring the load. A load tester for applying a predetermined load and displacement to the DUT and measuring a load-displacement characteristic in which the load and the displacement are associated with each other. A reading device that reads an identifier in which data representing the test conditions is stored, a control device that operates the moving device and the load cell based on the data read by the reading device, and an external personal computer, An interface for transmitting the measurement result measured by the load tester and the data stored in the identifier.

  According to the load testing machine of claim 1, the reading device that reads the identifier storing the data representing the test condition of the DUT, and the moving device and the load cell are operated based on the data read by the reading device. Control interface and an interface for transmitting the measurement results measured by the load tester and the data stored in the identifier to an external personal computer. Test results can be set easily and workability can be improved. In other words, this load testing machine allows the operator to check the information on the DUT and adjust the speed and amount of displacement applied to the DUT according to the information, or use a load meter for each predetermined amount of displacement. Thus, it is possible to easily set test conditions and record test results without reading the load and recording the results on a recording medium.

  Next, an invention according to claim 2 is an IC tag according to the load testing machine according to claim 1, wherein the identifier includes an integrated circuit that stores the data and an antenna that wirelessly communicates the data. It is characterized by being.

  According to the load testing machine of claim 2, since the identifier is an IC tag including an integrated circuit that stores data and an antenna that wirelessly communicates data, the test conditions relating to the test via the integrated circuit And abundant information on the test article can be stored, and this information can be transmitted to the load tester via the antenna.

  Next, according to a third aspect of the present invention, in the load testing machine according to the first or second aspect, the control device is provided with an input means for storing the measurement result in the IC tag. It is characterized by that.

  According to the load testing machine of the third aspect, since the control device is provided with the input means for storing the measurement result in the IC tag, the control device is associated with the information on the DUT stored in advance in the IC tag. Measurement results can be stored in the IC tag, and these measurement results and information can be transmitted to a personal computer as necessary.

  Next, according to a fourth aspect of the present invention, in the load tester according to any one of the first to third aspects, the test conditions are input to the IC tag by communication from the personal computer, and the IC tag The moving device and the load cell are configured to operate via a tag.

  According to the load testing machine of the fourth aspect, the test condition is input to the IC tag by communication from the personal computer, and the moving device and the load meter are operated via the IC tag. The load displacement characteristics of the DUT can be easily measured by operating a personal computer, and the added value is excellent.

  Next, the invention according to claim 5 is the load testing machine according to any one of claims 1 to 4, wherein when the control device applies a predetermined load to the device under test, It is characterized by comprising zero point forming means for setting the position of the DUT as a zero point of displacement.

  According to the load testing machine of the fifth aspect, when the control device is applied with a predetermined load, the control device is provided with a zero point constituting means for setting the position of the DUT as a zero point of displacement. Therefore, there is no play in the displacement direction between the DUT and the load cell, and a zero point can be obtained, and the load displacement characteristic can be measured with high accuracy.

  Next, according to a sixth aspect of the present invention, in the load tester according to any one of the first to fourth aspects, the control device applies a predetermined load to the DUT, and the load decreases. The load meter is moved in the direction to detect a position where the load becomes zero, and a second zero point constituting unit is provided which sets the detected position as a zero point of the displacement of the test object. To do.

  According to the load testing machine of the sixth aspect, the control device applies a predetermined load to the DUT and moves the load meter in a direction in which the load decreases to detect a position where the load becomes zero. Since the second zero point constituting means for setting the detected position as the zero point of the displacement of the DUT is provided, the zero point of the displacement can be obtained with high accuracy.

  Next, in the invention according to claim 7, in the load testing machine according to any one of claims 1 to 6, the first and second loads associated with the end points on both sides of the displacement direction are set. And a first measurement operation mode for displacing the DUT within the first and second load ranges and measuring a displacement load characteristic therebetween. .

  According to the load testing machine of claim 7, the load testing machine includes end point load setting means for setting the first and second loads associated with the end points on both sides in the displacement direction, and the first and second load ranges. Since the first measurement operation mode is provided for displacing the device under test and measuring the displacement load characteristics during that time, the displacement range can be set in correspondence with the load, and the operability is excellent.

  Next, according to an eighth aspect of the present invention, in the load testing machine according to any one of the first to sixth aspects, a plurality of displacements for measuring the load are set, and the displacement is determined for each displacement. Is maintained for a predetermined time, and a load is measured, and a second measurement operation mode for sequentially performing a displacement operation and a load measurement is provided.

  According to the load testing machine according to claim 8, a plurality of displacements for measuring the load are set, and for each displacement, the displacement is maintained for a predetermined time to measure the load, and the displacement operation and the load are sequentially performed. Since the second measurement operation mode for performing the measurement is provided, the load can be accurately measured in association with a plurality of displacements.

  According to the load testing machine of the present invention, the operator confirms information on the DUT and adjusts the speed and amount of displacement applied to the DUT according to the information, or loads the load every predetermined amount of displacement. It is possible to easily set test conditions and record test results without reading the load via a meter and recording the result on a recording medium. In addition, by providing an IC tag equipped with an integrated circuit that stores data and an antenna that wirelessly communicates data as identifiers, it is possible to store abundant information on test conditions and test items related to testing via the integrated circuit. These pieces of information can be transmitted to the load tester via the antenna.

  In addition, according to the load testing machine of the present invention, the measurement results and other information stored in the IC tag are transmitted to the personal computer via the antenna provided in the IC tag, and the data is edited and stored using the personal computer. Can do. According to the load testing machine of the present invention, the measurement result can be stored in the IC tag in association with the information on the test object and the test condition, and the information can be transmitted to the personal computer as necessary. Furthermore, according to the load testing machine of the present invention, the load displacement characteristic of the DUT can be easily measured by operating the personal computer.

  Further, according to the load testing machine of the present invention, the zero point of displacement can be obtained without play between the DUT and the load cell in the displacement direction, and the load displacement characteristic can be measured with high accuracy. Furthermore, according to the load testing machine of the present invention, it is possible to accurately measure the load in association with a plurality of displacements.

  Next, an embodiment of the load tester of the present invention will be described with reference to the drawings. FIG. 1 is an external view showing the external appearance of the load tester according to the present invention, FIG. 2 is a block diagram showing a control system of the load tester, and FIGS. 3, 4, and 5 are measurement modes provided in the load tester. It is explanatory drawing for demonstrating.

  As shown in FIG. 1, the load testing machine 1 includes a load meter 2 that applies a load to the DUT and measures the load, and a slide mechanism that changes the relative distance between the load meter 2 and the DUT. The moving device 3, the reading device 4 that reads the IC tag 10 in which the data representing the test conditions of the DUT are stored, and the control that operates the moving device 3 and the load meter 2 based on the data read by the reading device 4 A device 5 and an interface connection cable 11 for performing data communication between the control device 5 and a personal computer (not shown) are provided. In the present embodiment, the IC tag 10 is supplied integrally with the device under test, and is configured so as to be removed from the device under test and used as necessary.

  The load meter 2 includes a power key 2a, a liquid crystal display 2b for displaying the measurement result, a zero point calibration key 2s for calibrating the measurement value to zero, and a peak output key for instructing output of a peak value of the load read continuously. 2d, a unit switching key 2e for switching the unit of load (for example, Kgf or N), a terminal 2f for applying tension or pressing force to the DUT, and the like. Further, the load cell 2 has a built-in drive circuit (reference numeral 2g in FIG. 2) for controlling the measurement operation based on the command signals from the respective keys described above, and the load cell 2 and the control device 5 are connected to the communication cable. (Not shown).

  Next, the moving device 3 is rotatably supported via a support column 3f, a bearing 3c and a coupling 3b, and a bearing 3c and a coupling 3b provided upright on the control device 5, and is spirally formed along the outer periphery. The screw 3a and the screw 3a on which the screw is formed are combined via a female screw (not shown), and the load meter 2 is fixed while sliding along the axial direction of the screw 3a as the screw 3a rotates. A holder 3g is provided.

  Further, one end of the screw 3a is connected to a rotating shaft of a motor provided in the control device 5 through a coupling 3b. And the moving apparatus 3 is comprised so that the rotation operation | movement of a motor may be converted into the linear motion which slides the load cell 2 up and down via the screw 3a and the holder 3g. The function of the slide mechanism of the present invention is expressed by the motor, the support 3f, the screw 3a, the bearing 3c, the coupling 3b, the holder 3g, and the like provided in the control device 5.

  Next, the control device 5 includes an operation panel 8 for an operator to operate the measurement operation and slide operation of the load cell 2. The operation panel 8 has speed setting knobs 8b and 8c for setting the sliding speed of the load cell 2, a direction command key 8d for instructing the sliding direction of the load cell 2 upward (arrow U direction), and the sliding direction of the load cell downward ( Direction command key 8e for commanding in the direction of arrow D), measurement mode selection key 8f for setting each measurement mode to be described later, liquid crystal display 8k for setting operation speed, displacement, load, etc. in the measurement mode, and numeric input keys 8m, 8n A start key 8p for instructing start of the measurement operation based on the set measurement mode, a stop key 8h for instructing stop of the measurement operation, and the like are provided.

  Next, as shown in FIG. 2, the load testing machine 1 includes a control system 100 that controls the operation of the moving device 3 and the load cell 2. The control system 100 is configured as a microcomputer centering on the CPU 21, ROM 22, and RAM 23, and the CPU 21 uses the ROM 22, RAM 23, and the like for each function based on a command signal input from the operation panel 8 or the IC tag 10. Execute the process.

  The IC tag 10 includes an integrated circuit that stores data and an antenna that wirelessly communicates data. The IC tag 10 stores data associated with test conditions for testing the load displacement characteristics of the DUT and data such as the type and date of manufacture of the DUT in the integrated circuit. When placed on (or close to) 4, the data is output to the reading unit 4 via the antenna. Further, the IC tag 10 includes a receiving unit (not shown) that receives data representing the test conditions transmitted from the personal computer.

  Next, the control system 100 receives the radio signal output from the IC tag 10, converts it into a digital signal and outputs it to the CPU 21, counts the elapsed time, and outputs a signal representing the elapsed time to the CPU 21. The time counter 33, the motor control unit 24 that outputs a drive signal to the motor 25 based on the output signal from the CPU 21, the motor 25 that rotates based on the drive signal input from the motor control unit 24, and the rotational force of the motor 25 A moving device 3 for moving the load meter 3 in the directions of arrows U and D in FIG.

  The load cell 2 applies a pressing force or a tensile force to the DUT and transmits the load to the load cell 2d. The load cell 2s and load cell 2s generate an electrical signal corresponding to the load transmitted through the terminal 2f. The drive circuit 2g etc. which convert the electric signal produced | generated by (1) into a digital signal and output to CPU21 are provided. The drive circuit 2g is based on the command signal input from the power key 2a, the zero point calibration key 2s, the peak output key 2d, the unit switching key 2e, etc., and the command signal input from the CPU 21. 2 is provided.

  In addition, the control system 100 serializes data between a RAM 23 that stores data input from the reading unit 4 via the CPU 21, a ROM 22 that stores a measurement operation mode program described later, and the CPU 21 and an external personal computer. USB interface (so-called Universal Serial Bus-equipped device for data communication and corresponding to the interface in the present invention) 30, for example, a pen recorder or the like, An analog voltage output unit 31 that outputs displacement as a voltage signal, a pair of upper and lower limit switches 32a and 32b that operate at a predetermined slide position of the load cell 2 and output a stop signal to stop the slide operation to the CPU 21, operated by an operator Command signal to CPU2 1 is constituted by an operation panel 8 or the like for sending to 1.

  The USB interface 30 converts the measurement data measured by the load testing machine 1 and the data stored in the IC tag 10 into a signal for communicating with a personal computer. Further, the control device 5 includes a transmission device 35 that transmits measurement data input via the CPU 21 to the IC tag 10. A command for storing the measurement data in the IC tag 10 is input to the CPU 21 when the operator operates an operation key (not shown) provided on the operation panel 8. The function of the input means of the present invention is expressed by the CPU 21, the transmitter 35, operation keys (not shown), and the like.

  Further, the control system 100 inputs data associated with the test conditions to the CPU 21 through communication from the personal computer via the USB interface, and inputs this data to the IC tag 10 via the transmitter 35. Data input to the tag 10 is read by the reading device 4 so that the moving device 3 and the load cell 2 can be operated.

  Next, the load testing machine 1 is provided with a plurality of measurement operation modes that operate according to a command signal input from the IC tag 10 or the operation panel 8 or the like. Hereinafter, the measurement operation mode will be described with reference to FIGS. 3 to 5, the vertical axis represents the displacement amount S and the horizontal axis represents the elapsed time T.

  In the measurement operation mode shown in FIG. 3A, the load cell 2 starts from P0 and maintains the sliding motion stopped until reaching P1, and the load cell 2 is moved upward from P1 (U in FIG. 1). When the upper limit switch 32a is actuated (PULL LS), the sliding operation is stopped and the stop state is maintained until P3, and then the load cell 2 is moved downward (FIG. 1). When it slides to the position (PUSH LS) where the lower limit switch 32b is operated, the slide operation is stopped and the measurement is finished. In this measurement operation mode, it is possible to detect the load by applying a tensile force and a pressing force to the DUT in accordance with the above-described operation.

  Next, in the measurement operation mode shown in FIG. 3B, the load meter 2 starts from P0 and keeps the sliding motion stopped until reaching P1, and the load meter 2 moves downward from P1 (FIG. 1). When the limit switch 32b on the lower side is activated (PUSH LS), the slide operation is stopped and the stop state is maintained until P3 is reached. When it slides in the (U direction in FIG. 1) and reaches the position (PUSH LS) where the lower limit switch 32a is operated, the sliding operation is stopped and the measurement is finished. In this measurement operation mode, it is possible to detect the load by applying a tensile force and a pressing force to the DUT in accordance with the above-described operation.

  Next, in the measurement mode shown in FIG. 3 (c), the load meter 2 starts from P0 and keeps the sliding motion stopped until reaching P1, and the load meter 2 moves upward from P1 (in FIG. 1). When the load A reaches a predetermined load A, the sliding operation is stopped and the stop state is maintained until P3 is reached, and then the load cell 2 is moved downward (D direction in FIG. 1). When it slides and reaches a predetermined load B, the sliding operation is stopped and the measurement is finished. Then, a tensile force and a compressive force can be applied to the DUT along with the above-described operation, and the load can be detected continuously. At this time, the CPU 21 continuously inputs a parameter corresponding to the load continuously detected from the load cell 2 to the CPU 21, and the CPU 21 corresponds to the predetermined loads A and B. When the load A or B is reached, the sliding operation of the load cell 2 is stopped.

In the measurement mode shown in FIG. 3D, the load meter 2 starts from P0 and maintains the sliding motion stop state until reaching P1, and the load meter 2 moves downward from P1 (D direction in FIG. 1). ), When the predetermined load B is reached, the sliding operation is stopped and the stopped state is maintained until P3, and then the load cell 2 slides upward (in the U direction in FIG. 1), When the predetermined load BA is reached, the slide operation is stopped and the measurement is terminated. In addition, a tensile force and a pressing force can be applied to the DUT along with the above-described operation, and the load can be detected continuously. At this time, the CPU 21 continuously inputs a parameter corresponding to the load detected continuously from the load cell 2 to the CPU 21, and the CPU 21 corresponds to the predetermined loads A and B. When the load A or B is reached, the sliding operation of the load cell 2 is stopped.

  As described above, the measurement operation modes shown in FIGS. 3C and 3D have the first load (load A) and the second load (load) associated with the end points on both sides in the displacement direction. B) is set, the test object is displaced within the range from the first load to the second load, and the displacement load characteristic between them is measured, which corresponds to the first measurement operation mode of the present invention. To do. The load A and the load B are stored in advance in the IC tag 10 together with command data for instructing the measurement operation mode, read by the reading device 4, input to the CPU 21, and stored in the RAM 23. Further, the load A and the load B may be input to the CPU 21 by the operator via the operation panel 8. The function of the end point load setting means of the present invention is manifested by the CPU 21, RAM 23, IC tag 10, reader 4 or operation panel.

  Further, at P0 in FIGS. 3A to 3D, a predetermined load close to a predetermined zero is applied to the DUT through a load meter terminal, and the position of the DUT is set to zero displacement. A point. The predetermined load close to zero is stored in advance in the IC tag 10 together with command data for instructing the measurement operation mode, read by the reading device 4, input to the CPU 21, and stored in the RAM 23. Further, the load A and the load B may be input to the CPU 21 by the operator via the operation panel 8. The function of the zero point constructing means of the present invention is manifested by the CPU 21, RAM 23, IC tag 10, reader 4 or operation panel 8 or the like.

  Next, the measurement operation mode shown in FIG. 4A is a cycle in which the upward and downward slide operations shown in FIG. 3A are repeated for two cycles, which are shown in FIG. 4B. In the measurement operation mode, the slide operation directed upward and downward shown in FIG. 3D is repeated for two cycles.

  Next, in the measurement operation mode shown in FIG. 5, a plurality of displacements L1, L2, L3, L4, and L5 for which a load is to be measured are set, and for each displacement, the displacement is maintained for a predetermined time and the load is applied. Measure and sequentially perform displacement operation and load measurement (so-called second measurement operation mode of the present invention).

  In the measurement operation mode shown in FIG. 5, at the start point (START), the terminal 2f of the load cell 2 is separated from the test object. Next, the load meter 2 slides downward (in the direction D in FIG. 1), abuts against the object to be tested, applies a load, and reaches a predetermined load C (which is the position of PT) to perform a sliding operation. After stopping and maintaining the stop state for a predetermined time, the slide is made upward (in the U direction in FIG. 1), and the slide operation is stopped at P0 where the load becomes zero. Next, the load meter maintains the stop state at the position P0 for a predetermined time, and then, with reference to P0, P1, the displacement of L1, P2, the displacement of L2, P3, the displacement of L3, and P4 of the displacement of L4 The load is detected by maintaining a predetermined time at each position via P5, which is the displacement of L5, and returns to the same height as P0, and the measurement operation is terminated (END). The measurement operation mode is stored in advance in the IC tag 10 together with command data for instructing the measurement operation mode, read by the reading device 4, input to the CPU 21, and stored in the RAM 23. Further, the operator may input the measurement operation mode to the CPU 21 via the operation panel 8. In this measurement operation mode, a predetermined load is applied to the DUT, the load meter is moved in the direction in which the load decreases, the position where the load becomes zero is detected, and the detected position is determined as the DUT. The so-called second zero point constituting means of the present invention, which is the zero point (P0) of the displacement, is configured. The function of the second zero point constructing means of the present invention is expressed by the CPU 21, RAM 23, IC tag 10, reading device 4 or operation panel 8 or the like.

  Below, the effect of the load testing machine 1 is described in the Example which has the said structure.

  According to the load testing machine 1 described in the present embodiment, the reading device 4 that reads the IC tag 10 in which the data representing the test condition of the DUT is stored, and the moving device 3 based on the data read by the reading unit 4. And a control device 5 for operating the load meter 2 and a USB interface 30 for transmitting the measurement result measured by the load tester 1 and the data stored in the IC tag 10 to an external personal computer. Therefore, when performing a test, test conditions and test results can be easily set, and workability can be improved. That is, the load testing machine 1 is configured such that the operator confirms information on the DUT and adjusts the speed and amount of displacement applied to the DUT according to the information, or loads the load meter for each predetermined amount of displacement. It is possible to easily set the test conditions and record the test results without reading the load through the recording medium and recording the result on the recording medium.

  Further, according to the load testing machine 1 described in the present embodiment, since the control device 5 is provided with the transmitting device 35 for storing the measurement result in the IC tag 10, the measurement result is stored in the IC tag 10 in advance. The information can be stored in the IC tag 10 in association with the information on the device under test, and these measurement results and information can be transmitted to a personal computer as necessary.

  Moreover, according to the load testing machine 1 described in the present embodiment, the test condition is input to the IC tag 10 by communication from the personal computer, and the moving device 3 and the load cell 2 are operated. By operating the personal computer, it is possible to easily measure the load displacement characteristics of the DUT.

  Further, according to the load testing machine 1 described in the present embodiment, when testing the load displacement characteristics, when the control device 5 applies a predetermined load to the DUT, the position of the DUT Is provided with zero point construction means for setting the zero point of displacement as a zero point, and the zero point can be obtained without play in the displacement direction of the DUT and the load cell 2 and the load displacement characteristics can be measured with high accuracy.

  As mentioned above, although one Example of this invention was described, this invention is not limited to the said Example, It can take various aspects. For example, although the IC tag 10 including an integrated circuit and an antenna is used as the identifier of the present invention, a label on which information on the DUT is displayed in a barcode may be used instead of the IC tag 10. At this time, a barcode scanner is provided in place of the reading device 4, and the test conditions corresponding to the barcode may be stored in the ROM 23 in advance.

It is an external view showing the external appearance of the load testing machine in one Example of this invention. It is a block diagram showing the control system of the load testing machine in the Example. It is explanatory drawing of the measurement mode with which the load testing machine was equipped in the Example. It is explanatory drawing of the measurement mode with which the load testing machine was equipped in the Example. It is explanatory drawing of the measurement mode with which the load testing machine was equipped in the Example.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 ... Load tester, 2 ... Load meter, 2a ... Power key, 2b ... Liquid crystal display part, 2d ... Peak output key, 2e ... Measurement unit switching key, 2f ... Terminal, 2s ... Load cell, 3 ... Moving device, 3a ... Screw, 3b ... coupling, 3c ... bearing, 3d ... DUT mounting table, 3g ... holder, 4 ... reading device, 5 ... control device, 8 ... operation panel, 10 ... IC tag, 11 ... interface connection cable, 21 ... CPU, 22 ... ROM, 23 ... RAM, 24 ... motor control unit, 25 ... motor, 30 ... USB interface, 31 ... analog voltage output unit, 32 ... limit switch, 33 ... time counter.

Claims (8)

A load cell that applies a load to the DUT and measures the load;
A moving device including a slide mechanism that changes a relative distance between the load cell and the DUT;
A load testing machine that applies a predetermined load and displacement to the DUT and measures a load-displacement characteristic that associates the load with the displacement,
A reader for reading an identifier in which data representing test conditions of the DUT is stored;
A control device for operating the moving device and the load cell based on the data read by the reading device;
An interface for transmitting the measurement result measured by the load tester and the data stored in the identifier to an external personal computer,
A load testing machine comprising:   The load tester according to claim 1, wherein the identifier is an IC tag including an integrated circuit that stores the data and an antenna that wirelessly communicates the data.   The load testing machine according to claim 1, wherein the control device includes an input unit that stores the measurement result in the IC tag. The test condition is input to the IC tag by communication from the personal computer, and the moving device and the load cell are operated via the IC tag.
The load tester according to any one of claims 1 to 3, wherein The control device includes a zero point configuration unit that sets the position of the DUT as a zero point of displacement when a predetermined load is applied to the DUT.
The load tester according to any one of claims 1 to 4, wherein The control device applies a predetermined load to the DUT, moves the load meter in a direction in which the load decreases, detects a position where the load becomes zero, and detects the detected position of the DUT. Comprising a second zero-point constructing means as a zero point of displacement,
The load tester according to any one of claims 1 to 4, wherein End point load setting means for setting the first and second loads associated with the end points on both sides of the displacement direction is provided, the test object is displaced within the range of the first and second loads, It has a first measurement operation mode that measures displacement load characteristics.
The load tester according to any one of claims 1 to 6, wherein A plurality of displacements for measuring the load is set, and for each displacement, the displacement is maintained for a predetermined time, the load is measured, and the displacement measurement and the load measurement are sequentially performed. ing,
The load tester according to any one of claims 1 to 6, wherein

Images