Calibration method of elevator detector

Abstract

According to the calibration method of the elevator detector, the elevator multifunctional calibration device is adopted to calibrate the elevator detector; the calibration method comprises the following steps: S1, installing a speed measurement sensor of an elevator detector on the adjustable multi-axis sensor clamp, and enabling the speed measurement sensor to correspond to the high-precision speed measurement device; s2, controlling the high-precision speed measuring device to output a set rotating speed through the balance coefficient controller, and controlling the high-precision three-phase power source to synchronously output set power; and S3, the balance coefficient controller synchronously collects standard speed data generated by the high-precision speed measurement device and standard power data generated by the high-precision three-phase power source. According to the calibration method of the elevator detector, the speed and the power are detected at the same time, the balance coefficient is directly calculated, and the problems that according to an original method, multiple devices are used for detecting all indexes respectively, the system error is too large, and the detection procedure is tedious are effectively solved.

Description

Technical Field

[0001] This invention relates to the field of elevator calibration technology, and more particularly to a calibration method for an elevator testing instrument. Background Technology

[0002] Elevators are common special equipment in residential communities, shopping malls, office buildings, and other public places, and their safety performance is receiving increasing attention. Elevator traction performance and balance coefficient are key parameters. A balance coefficient that is too small or too large will disrupt the balance of the elevator's traction force, leading to greater braking force requirements, deteriorating the elevator's operating conditions, and easily causing equipment damage, accidents, or even personal injury. Therefore, accurate calibration and testing of traction performance and balance coefficient are extremely important. However, currently, there are no dedicated calibration instruments or methods that cover the traceability of elevator traction performance and balance coefficient testing equipment. To ensure the normal operation of elevators and the safety of passengers, researching and designing a compliant calibration and testing device and calibration specifications is of great significance. Summary of the Invention

[0003] To address the aforementioned issues, this technical solution provides a multifunctional calibration device for calibrating elevator traction performance and balance coefficient.

[0004] To achieve the above objectives, the technical solution is as follows: A calibration method for an elevator tester is provided, which uses a multi-functional elevator calibration device to calibrate the tester. The multi-functional elevator calibration device includes a balance coefficient controller, a high-precision speed measuring device, an adjustable multi-axis sensor fixture, and a high-precision three-phase power source. The calibration method includes the following steps: S1: Install the speed measurement sensor of the elevator detector onto the adjustable multi-axis sensor fixture, and align it with the high-precision speed measuring device; S2: The high-precision speed measuring device is controlled to output a set rotational speed by the balance coefficient controller, and the high-precision three-phase power source is controlled to synchronously output a set power. S3: The balance coefficient controller synchronously collects the standard speed data generated by the high-precision speed measuring device and the standard power data generated by the high-precision three-phase power source; S4: The balance coefficient controller compares the collected standard data with the measurement readings of the detector, and calculates the reading error of the calibrated parameter according to the preset formula to complete the calibration.

[0005] The calibration method for an elevator detector as described above, wherein the parameter to be calibrated includes the operating speed, and the calibration steps include: S101: Select multiple measurement points within the operating speed range of the high-precision speed measuring device; S102: At each measurement point, using the formula Calculate the standard rotational speed corresponding to this operating speed. ,in: The speed is measured in m / s. This is the standard rotational speed value, in r / min. The diameter of the turntable clamp is in meters (m). S103: Adjust the standard rotation speed value of the high-precision speed measuring device. The operating speed of the detector is tested, and after the detector reading stabilizes, the operating speed value is read. ; S104: Calculate the speed indication error based on the following formula: in: This is the speed indication error; The speed reading of the detector is in m / s; the actual measured speed of the high-precision speed measuring device is... The unit is m / s.

[0006] In the elevator testing instrument calibration method described above, in step S103, three tests are performed on each measurement point, and the average of the three operating speed readings is taken as the operating speed reading. .

[0007] As described above, the calibration method for an elevator testing instrument involves uniformly selecting five operating speeds as measurement points.

[0008] The calibration method for an elevator detector as described above, wherein the parameter to be calibrated includes the lifting height, and the calibration steps include: S201: Set the operating speed of the high-precision speed measuring device and load it to a constant speed. According to steps S101-S103, obtain the measured value of the operating speed. ; S202: Start the timer, record the lifting height, and calculate the height indication error according to the following formula: in, This is for the height indication error; The height reading of the detector is in meters (m); the measured running speed is in meters per second (m / s). The time required to increase altitude is measured in seconds (s).

[0009] The calibration method for an elevator testing instrument as described above, wherein the parameters to be calibrated include braking deceleration and braking distance, and the calibration steps include: S301: Set the operating speed of the high-precision speed measuring device and load it to a constant speed. According to steps S101-S103, obtain the measured value of the operating speed. As initial velocity ; S302: Start the timer, decelerate to a constant speed, measure the final velocity, and obtain the final velocity. Record the readings of the braking deceleration and braking distance from the detector, and then calculate the braking deceleration reading error using the following formulas. and braking distance indication error ,Right now: in: This refers to the error in the indicated braking deceleration value; The braking deceleration reading of the detector is in m / s². 2 ; The measured value of the initial velocity. These are measured values ​​of the final velocity, all in m / s; The time it takes for the initial velocity to decelerate to the final velocity, expressed in seconds; in: This is the error in the indicated braking distance; The braking distance reading of the detector is in meters (m). The measured value of the deceleration is given in m / s². 2 , The time taken for the initial velocity to decelerate to the final velocity, expressed in seconds (s).

[0010] The calibration method for an elevator testing instrument as described above, wherein the parameter to be calibrated includes no-load power, and the calibration steps include: S401: Connect the voltage and current terminals of the detector to the high-precision three-phase power source, and calibrate by uniformly selecting 5 measurement points within the power range; S402: Adjust the output voltage of the high-precision three-phase power source to the rated value U and set the power factor cosφ; then, adjust the output current to make the output power reach the measurement point P, then read the no-load power reading, and calculate its indication error according to the following formula: in: This is the power indication error; The power reading of the detector is in watts (W). This is the power output value of a high-precision three-phase power source, expressed in watts (W).

[0011] The calibration method for an elevator detector as described above, wherein the parameter to be calibrated includes a balance coefficient, and the calibration steps include: S501: Connect the detector to the high-precision three-phase power source and the high-precision speed measuring device, and select multiple measurement points for calibration within the balance coefficient range; S502: Set the traction ratio, conduct an upward test, and after the running speed and power stabilize, run for a preset time before ending the test; S503: Change the running direction of the high-precision speed measuring device, perform a downward test, and read the value of the balance coefficient. Then calculate the error of the balance coefficient value using the following formula. : in: This is the error in the indication of the balance coefficient; The value of the balance coefficient of the detector; This is the standard value for the balance coefficient.

[0012] The above describes a calibration method for an elevator testing instrument. In step S501, the multiple measurement points include 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, and 0.8; In step S502, the traction ratio is 1 and the preset time is 30s.

[0013] The beneficial effects of this application are: This invention provides a calibration method for an elevator testing instrument, which can restore the working conditions of the testing process to the greatest extent, realize the simultaneous detection of speed and power and the direct calculation of the balance coefficient, and effectively solve the problems of the original method, such as using multiple devices to detect various indicators separately, excessive system error, and cumbersome testing procedures. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments will be briefly introduced below.

[0015] Figure 1 This is a schematic diagram of the structure of the present invention; Figure 2 This is the test interface for the balance coefficient controller; Figure 3 This is the connection diagram for no-load power calibration; Figure 4 This is the connection diagram for balance coefficient calibration; Figure 5 This is a schematic diagram of the adjustable multi-axis sensor fixture. Figure 1 ; Figure 6 This is a schematic diagram of the adjustable multi-axis sensor fixture. Figure 2 ; Figure 7 This is the electrical connection diagram of the present invention. Detailed Implementation

[0016] To make the technical problems solved, the technical solutions, and the beneficial effects of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

[0017] A calibration method for an elevator detector, wherein the elevator detector is calibrated using a multi-functional elevator calibration device, wherein the multi-functional elevator calibration device includes a balance coefficient controller, a high-precision speed measuring device, an adjustable multi-axis sensor fixture, and a high-precision three-phase power source. The calibration method includes the following steps: S1: Install the speed measurement sensor of the elevator detector onto the adjustable multi-axis sensor fixture, and align it with the high-precision speed measuring device; S2: The high-precision speed measuring device is controlled to output a set rotational speed by the balance coefficient controller, and the high-precision three-phase power source is controlled to synchronously output a set power. S3: The balance coefficient controller synchronously collects the standard speed data generated by the high-precision speed measuring device and the standard power data generated by the high-precision three-phase power source; S4: The balance coefficient controller compares the collected standard data with the measurement readings of the elevator detector, and calculates the reading error of the calibrated parameter according to the preset formula to complete the calibration.

[0018] This invention provides a calibration method for an elevator testing instrument. The device, through research and optimization of core functions such as the speed and power modules, and the addition of calibration modules for key parameters such as elevator lifting height, braking deceleration, and braking distance, can maximally reproduce the working conditions of the testing process. It enables simultaneous detection of speed and power and direct calculation of the balance coefficient, effectively solving problems such as the use of multiple devices to test various indicators, excessive system errors, and cumbersome testing procedures in previous methods. This provides a more reliable traceability basis for elevator testing instruments, ensuring the accuracy of the testing process. Furthermore, based on this, a set of compliant elevator testing instrument calibration specifications has been researched, developed, and implemented, solving the industry problem of mismatch between current technical specifications and practical applications. The research results are further applied to the calibration and testing work of elevator testing instruments, ensuring the accuracy of test data and providing technical support for special equipment supervision, elevator performance inspection, and elevator use and maintenance departments.

[0019] Furthermore, as a preferred embodiment of this solution and not a limitation, the parameter to be calibrated includes operating speed, and the calibration steps include: S101: Select multiple measurement points within the operating speed range of the high-precision speed measuring device; S102: At each measurement point, using the formula Calculate the standard rotational speed corresponding to this operating speed. Where: is the running speed, in m / s; This is the standard rotational speed value, in r / min. The diameter of the turntable clamp is in meters (m). S103: Adjust the standard rotation speed value of the high-precision speed measuring device. The operating speed of the elevator testing instrument was tested, and the reading was taken after the reading of the elevator testing instrument stabilized. ; S104: Calculate the speed indication error based on the following formula: in: This is the speed indication error; The reading of the elevator detector is the operating speed in m / s; the measured operating speed of the high-precision speed measuring device is... The unit is m / s.

[0020] Furthermore, as a preferred embodiment of this solution and not a limitation, in step S103, three tests are performed on each measurement point, and the average of the three running speed readings is taken as the running speed reading. .

[0021] Furthermore, as a preferred embodiment of this solution and not a limitation, five operating speeds are uniformly selected as measurement points.

[0022] Furthermore, as a preferred embodiment of this solution and not a limitation, the parameter to be calibrated includes the lifting height, and the calibration steps include: S201: Set the operating speed of the high-precision speed measuring device and load it to a constant speed. According to steps S101-S103, obtain the measured value of the operating speed. ; S202: Start the timer, record the lifting height, and calculate the height indication error according to the following formula: in, This is for the height indication error; This is the height reading of the elevator detector, in meters (m). The measured operating speed is expressed in m / s. The time required to increase altitude is measured in seconds (s).

[0023] Furthermore, as a preferred embodiment of this solution and not a limitation, the parameters to be calibrated include braking deceleration and braking distance, and the calibration steps include: S301: Set the operating speed of the high-precision speed measuring device and load it to a constant speed. According to steps S101-S103, obtain the measured value of the operating speed. As initial velocity ; S302: Start the timer, decelerate to a constant speed, measure the final velocity, and obtain the final velocity. Record the braking deceleration and braking distance readings of the elevator detector, and then calculate the braking deceleration reading error using the following formulas. and braking distance indication error ,Right now: in: This refers to the error in the indicated braking deceleration value; This is the braking deceleration reading from the elevator testing instrument, in m / s². 2 ; The measured value of the initial velocity. These are measured values ​​of the final velocity, all in m / s; The time it takes for the initial velocity to decelerate to the final velocity, expressed in seconds; in: This is the error in the indicated braking distance; This is the braking distance reading from the elevator detector, in meters (m). The measured value of the deceleration is given in m / s². 2 , The time taken for the initial velocity to decelerate to the final velocity, expressed in seconds (s).

[0024] Furthermore, as a preferred embodiment of this solution and not a limitation, the parameter to be calibrated includes no-load power, and the calibration steps include: S401: Connect the voltage and current terminals of the elevator detector to the high-precision three-phase power source, and calibrate by uniformly selecting 5 measurement points within the power range; S402: Adjust the output voltage of the high-precision three-phase power source to the rated value U and set the power factor cosφ; then, adjust the output current to make the output power reach the measurement point P, then read the no-load power reading, and calculate its indication error according to the following formula: in: This is the power indication error; The power reading of the elevator testing instrument is in watts (W). This is the power output value of a high-precision three-phase power source, expressed in watts (W).

[0025] Furthermore, as a preferred embodiment of this solution and not a limitation, the parameter to be calibrated includes a balance coefficient, and the calibration steps include: S501: Connect the elevator detector to the high-precision three-phase power source and the high-precision speed measuring device, and select multiple measurement points for calibration within the balance coefficient range; S502: Set the traction ratio, conduct an upward test, and after the running speed and power stabilize, run for a preset time before ending the test; S503: Change the running direction of the high-precision speed measuring device, perform a downward test, and read the value of the balance coefficient. Then calculate the error of the balance coefficient value using the following formula. : in: This is the error in the indication of the balance coefficient; This is the balance coefficient reading of the elevator testing instrument; This is the standard value for the balance coefficient.

[0026] Furthermore, as a preferred embodiment of this solution and not a limitation, in step S501, the plurality of measurement points include 0.2, 0.3, 0.4, 0.5, 0.6, 0.7 and 0.8; In step S502, the traction ratio is 1 and the preset time is 30s.

[0027] Elevator multi-functional calibration device, including A high-precision speed measuring device 1 is used to output a set rotational speed value to test the speed of the detector; High-precision three-phase power source 2, which is used to output the set standard current, voltage and power values ​​to perform power testing on the detector; The balance coefficient controller 3 is electrically connected to the high-precision speed measuring device 1 and the high-precision three-phase power source 2. Adjustable multi-axis sensor fixture 4, which is used to hold the detector.

[0028] This invention provides a multi-functional elevator calibration device. Through a high-precision speed measuring device and a high-precision three-phase power source, and unified control by a balance coefficient controller, it achieves integrated calibration of multiple parameters of the elevator testing instrument, including speed, no-load power, and balance coefficient, thus improving calibration efficiency and comprehensiveness. An adjustable multi-axis sensor fixture ensures stable installation of the elevator testing instrument, providing a foundation for accurate calibration.

[0029] The balanced coefficient controller coordinates the operation, enabling comprehensive calibration of the elevator testing instrument and improving the accuracy and efficiency of calibration. The adjustable multi-axis sensor fixture ensures the stable fixation of the testing instrument, adapting to testing instruments of different sizes and types, thus enhancing the versatility and practicality of the device.

[0030] The balance coefficient controller, as a control terminal, has a built-in intelligent control circuit board for realizing functional control, formula calculation, data collection, data display and data storage; A high-precision speed measuring device, as a speed data generation terminal, is used to output a set rotational speed value to perform speed testing on the instrument under test. Adjustable multi-axis sensor clamp for holding and adapting speed measurement sensors of different models of elevator balance coefficient / traction performance testers; A high-precision three-phase power source, serving as a multi-functional standard source, is used to output set standard current, voltage, and power values ​​to perform power testing on the instrument under test. The balance coefficient controller is electrically connected to the high-precision speed measuring device and the high-precision three-phase power source, and controls them to work together; the high-precision speed measuring device is mechanically connected to the adjustable multi-axis sensor fixture.

[0031] An adjustable multi-axis sensor clamp is used to clamp the speed measurement sensor of the elevator balance coefficient / traction performance tester. The high-precision speed measuring device obtains speed test data. During the speed test, a high-precision three-phase power source synchronously outputs power values ​​to obtain power test data. The balance coefficient controller collects both speed and power test data and calculates the balance coefficient using a formula. Based on relevant standards, the output data of the standard instrument is compared with the measured data of the elevator balance coefficient / traction performance tester to complete the data calibration test. Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the adjustable multi-axis sensor fixture 4 includes a transverse slide rail 41, a transverse slider 42 disposed on the transverse slide rail 41, a clamping platform 43 disposed on the transverse slider 42, and a transverse locking screw 44 for limiting the movement of the transverse slider 42. The transverse slide rail and transverse slider allow the entire clamping platform to move in the horizontal direction, facilitating quick alignment of the detector's installation position; the transverse locking screw reliably locks the transverse slider at any position on the transverse slide rail, preventing the fixture from shifting during calibration and ensuring clamping stability.

[0032] Furthermore, as a preferred embodiment of this solution and not a limitation, the clamping platform 43 is provided with a first moving platform 51 and a second moving platform 52, as well as an adjusting screw 53. The adjusting screw 53 is threadedly connected to the first moving platform 51 and the second moving platform 52, so that the first moving platform 51 and the second moving platform 52 move closer to or further away from each other. By rotating one adjusting screw, the first moving platform and the second moving platform can be driven to move towards or away from each other synchronously, realizing fast, accurate and symmetrical adjustment of the clamping width, which can adapt to detectors of different widths and is easy to operate.

[0033] Furthermore, as a preferred embodiment of this solution and not a limitation, the first moving platform 51 is provided with a first sleeve 54, and the second moving platform 52 is provided with a second sleeve 55. The adjusting screw 53 passes through the first sleeve 54 and the second sleeve 55. The thread direction of the adjusting screw 53 and the first sleeve 54 is opposite to the thread direction of the adjusting screw 53 and the second sleeve 55. The adjusting screw and the first and second sleeves are engaged with opposite threads, ensuring that when the adjusting screw is rotated, the first and second moving platforms can move towards or away from each other in strict synchronization, avoiding jamming during the adjustment process and ensuring the symmetry and accuracy of the movement of the two platforms.

[0034] Furthermore, as a preferred embodiment of this solution and not a limitation, the first mobile platform 51 is provided with a first lifting slide rail 61, a first lifting seat 62 cooperating with the first lifting slide rail 61, and a first longitudinal locking screw 63 for locking the first lifting seat 62; the second mobile platform 52 is provided with a second lifting slide rail 64, a second lifting seat 65 cooperating with the second lifting slide rail 64, and a second longitudinal locking screw 66 for locking the second lifting seat 65. The arrangement of the first lifting slide rail and the first lifting seat, and the second lifting slide rail and the second lifting seat, provides vertical adjustment freedom for the clamping component; the first longitudinal locking screw and the second longitudinal locking screw can independently lock the first lifting seat and the second lifting seat at the required height, so that the clamp can adapt to the height difference of the clamping point on the elevator detector, ensuring the stability and reliability of the clamping.

[0035] Furthermore, as a preferred embodiment of this solution and not a limitation thereof, the first lifting seat 62 is provided with a first clamping seat 71, and the first clamping seat 71 is provided with a support rod 72 hinged thereto for folding or unfolding relative to it. The hinged support rod can be flexibly unfolded to provide support according to the contour of the elevator detector, or folded up to avoid interference or save space, thereby enhancing the adaptability of the first clamping seat to elevator detectors of different shapes.

[0036] Furthermore, as a preferred embodiment of this solution and not a limitation, the first clamping base 71 is provided with a first receiving cavity 73 for the support rod 72 to be inserted. When the support rod is not in use, it can be folded and inserted into the first receiving cavity, making the clamp structure more compact, facilitating storage and transportation, and also preventing damage or inconvenience caused by accidental unfolding of the support rod.

[0037] Furthermore, as a preferred embodiment of this solution and not a limitation, the second lifting seat 65 is provided with a second clamping seat 74, and the second clamping seat 74 is provided with a support block 75 hinged thereto for folding or unfolding relative to it. The foldable support block on the second clamping seat, in conjunction with the support rod on the first clamping seat, can form multi-point, multi-form support, further improving the stability and adaptability when clamping complex-shaped elevator detectors.

[0038] Furthermore, as a preferred embodiment of this solution and not a limitation, the second clamping seat 74 is provided with a second receiving cavity 76 for the support block 75 to be embedded. The second receiving cavity provides storage space for the support block, and when the support block is folded and embedded, the outer side of the second clamping seat remains flat, which also serves to optimize the structure, facilitate storage, and protect the components.

[0039] Furthermore, as a preferred embodiment of this solution and not a limitation, the two support rods 72 are staggered with the support block 75 to allow space when the first clamping seat 71 and the second clamping seat 74 approach each other. This spatially staggered arrangement of the support rods and support block avoids structural interference between them when the first and second clamping seats approach each other to clamp a smaller elevator detector, ensuring smooth clamping action and availability of the entire adjustment range.

[0040] The above description is merely a preferred embodiment of this application and is not intended to limit the scope of this application. Any other embodiments whose principles and basic structures are the same as or similar to this application are within the protection scope of this application.

Claims

1. A calibration method for an elevator testing instrument, characterized in that, The elevator detector is calibrated using a multi-functional elevator calibration device, which includes a balance coefficient controller, a high-precision speed measuring device, an adjustable multi-axis sensor fixture, and a high-precision three-phase power source. The calibration method includes the following steps: S1: Install the speed measurement sensor of the elevator detector onto the adjustable multi-axis sensor fixture, and align it with the high-precision speed measuring device; S2: The high-precision speed measuring device is controlled to output a set rotational speed by the balance coefficient controller, and the high-precision three-phase power source is controlled to synchronously output a set power. S3: The balance coefficient controller synchronously collects the standard speed data generated by the high-precision speed measuring device and the standard power data generated by the high-precision three-phase power source; S4: The balance coefficient controller compares the collected standard data with the measurement readings of the elevator detector, and calculates the reading error of the calibrated parameter according to the preset formula to complete the calibration.

2. The calibration method for an elevator testing instrument according to claim 1, characterized in that, The parameters to be calibrated include operating speed, and the calibration steps include: S101: Select multiple measurement points within the operating speed range of the high-precision speed measuring device; S102: At each measurement point, using the formula Calculate the standard rotational speed corresponding to this operating speed. ,in: The speed is measured in m / s. This is the standard rotational speed value, in r / min. The diameter of the turntable clamp is in meters (m). S103: Adjust the standard rotation speed value of the high-precision speed measuring device. The operating speed of the elevator testing instrument was tested, and the reading was taken after the reading of the elevator testing instrument stabilized. ; S104: Calculate the speed indication error based on the following formula: in: This is the error in the speed indication; The reading of the elevator detector is the operating speed in m / s; the measured operating speed of the high-precision speed measuring device is... The unit is m / s.

3. The calibration method for an elevator testing instrument according to claim 2, characterized in that, In step S103, three tests are performed at each measurement point, and the average of the three running speed readings is taken as the running speed reading. .

4. The calibration method for an elevator testing instrument according to claim 2, characterized in that, Five running speeds were evenly selected as measurement points.

5. The calibration method for an elevator testing instrument according to claim 2, characterized in that, The parameter to be calibrated includes the lifting height, and the calibration steps include: S201: Set the operating speed of the high-precision speed measuring device and load it to a constant speed. According to steps S101-S103, obtain the measured value of the operating speed. ; S202: Start the timer, record the lifting height, and calculate the height indication error according to the following formula: in, This is for the height indication error; This is the height reading of the elevator detector, in meters (m). The measured operating speed is expressed in m / s. The time required to increase altitude is measured in seconds (s).

6. The calibration method for an elevator testing instrument according to claim 2, characterized in that, The parameters to be calibrated include braking deceleration and braking distance, and the calibration steps include: S301: Set the operating speed of the high-precision speed measuring device and load it to a constant speed. According to steps S101-S103, obtain the measured value of the operating speed. As initial velocity ; S302: Start the timer, decelerate to a constant speed, measure the final velocity, and obtain the final velocity. Record the braking deceleration and braking distance readings of the elevator detector, and then calculate the braking deceleration reading error using the following formulas. and braking distance indication error ,Right now: in: This refers to the error in the indicated braking deceleration value; This is the braking deceleration reading from the elevator testing instrument, in m / s². 2 ; The measured value of the initial velocity. These are measured values ​​of the final velocity, all in m / s; The time it takes for the initial velocity to decelerate to the final velocity, expressed in seconds; in: This is the error in the indicated braking distance; This is the braking distance reading from the elevator detector, in meters (m). The measured value of the deceleration is given in m / s². 2 , The time taken for the initial velocity to decelerate to the final velocity, expressed in seconds (s).

7. The calibration method for an elevator testing instrument according to claim 1, characterized in that, The parameter to be calibrated includes no-load power, and the calibration steps include: S401: Connect the voltage and current terminals of the elevator detector to the high-precision three-phase power source, and calibrate by uniformly selecting 5 measurement points within the power range; S402: Adjust the output voltage of the high-precision three-phase power source to the rated value U and set the power factor cosφ; then, adjust the output current to make the output power reach the measurement point P, then read the no-load power reading, and calculate its indication error according to the following formula: in: This is the power indication error; The power reading of the elevator testing instrument is in watts (W). This is the power output value of a high-precision three-phase power source, expressed in watts (W).

8. The calibration method for an elevator testing instrument according to claim 1, characterized in that, The parameter to be calibrated includes a balance coefficient, and the calibration steps include: S501: Connect the elevator detector to the high-precision three-phase power source and the high-precision speed measuring device, and select multiple measurement points for calibration within the balance coefficient range; S502: Set the traction ratio, conduct an upward test, and after the running speed and power stabilize, run for a preset time before ending the test; S503: Change the running direction of the high-precision speed measuring device, perform a downward test, and read the value of the balance coefficient. Then calculate the error of the balance coefficient value using the following formula. : in: This is the error in the indication of the balance coefficient; This is the balance coefficient reading of the elevator testing instrument; This is the standard value for the balance coefficient.

9. The calibration method for an elevator testing instrument according to claim 8, characterized in that, In step S501, the multiple measurement points include 0.2, 0.3, 0.4, 0.5, 0.6, 0.7, and 0.8; In step S502, the traction ratio is 1 and the preset time is 30s.

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