CN114104884A - Elevator load test device based on Internet of things - Google Patents
Elevator load test device based on Internet of things Download PDFInfo
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- CN114104884A CN114104884A CN202010881640.3A CN202010881640A CN114104884A CN 114104884 A CN114104884 A CN 114104884A CN 202010881640 A CN202010881640 A CN 202010881640A CN 114104884 A CN114104884 A CN 114104884A
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- singlechip
- elevator
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- acceleration sensor
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- 238000012360 testing method Methods 0.000 title claims abstract description 61
- 230000001133 acceleration Effects 0.000 claims abstract description 47
- 230000005540 biological transmission Effects 0.000 claims abstract description 18
- 230000005484 gravity Effects 0.000 claims abstract description 8
- 230000006855 networking Effects 0.000 claims description 2
- 238000012544 monitoring process Methods 0.000 abstract description 21
- 238000005259 measurement Methods 0.000 abstract description 10
- 238000012545 processing Methods 0.000 abstract description 4
- 238000004891 communication Methods 0.000 abstract description 2
- 238000005516 engineering process Methods 0.000 abstract description 2
- 238000007639 printing Methods 0.000 abstract description 2
- 238000007689 inspection Methods 0.000 description 8
- 238000009434 installation Methods 0.000 description 6
- 238000012423 maintenance Methods 0.000 description 5
- 238000000034 method Methods 0.000 description 5
- 230000010354 integration Effects 0.000 description 4
- 230000003068 static effect Effects 0.000 description 3
- 238000006073 displacement reaction Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000012790 confirmation Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B1/00—Control systems of elevators in general
- B66B1/34—Details, e.g. call counting devices, data transmission from car to control system, devices giving information to the control system
- B66B1/3476—Load weighing or car passenger counting devices
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66B—ELEVATORS; ESCALATORS OR MOVING WALKWAYS
- B66B5/00—Applications of checking, fault-correcting, or safety devices in elevators
- B66B5/0006—Monitoring devices or performance analysers
- B66B5/0018—Devices monitoring the operating condition of the elevator system
- B66B5/0025—Devices monitoring the operating condition of the elevator system for maintenance or repair
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M99/00—Subject matter not provided for in other groups of this subclass
- G01M99/007—Subject matter not provided for in other groups of this subclass by applying a load, e.g. for resistance or wear testing
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- Engineering & Computer Science (AREA)
- Automation & Control Theory (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Mechanical Engineering (AREA)
- Computer Networks & Wireless Communication (AREA)
- Maintenance And Inspection Apparatuses For Elevators (AREA)
- Indicating And Signalling Devices For Elevators (AREA)
Abstract
The invention provides an elevator load test device based on the Internet of things, which comprises: weight, reading ware, singlechip, three-dimensional acceleration sensor, weight dolly and cell-phone terminal, the RFID electronic tags has been pasted on the weight, it is the RFID read write line to read the ware, through the RFID read write line will RFID electronic tags's data transmission arrives the singlechip, singlechip and three-dimensional acceleration sensor install on the weight dolly, three-dimensional acceleration sensor's physics Z axle and gravity syntropy, three-dimensional accelerator sensor's data transmission arrives the singlechip, the singlechip data arrives through wireless transmission the cell-phone terminal, wireless transmission can select bluetooth to connect or wifi connects. The invention can utilize the mobile phone APP to carry out wireless communication on the monitoring terminal, realize the Internet of things technologies such as parameter setting, measurement data transmission and data processing, and realize remote printing of monitoring reports. Manpower and material resources are greatly reduced, and test data can be accurately obtained.
Description
Technical Field
The invention relates to a measuring device, in particular to an elevator load test device based on the Internet of things.
Background
Since the 80 s of the last century, with the rapid development of national economy, many high-rise buildings have been out of the ground, and the safety of operation of elevators as vertical transportation means which is indispensable in daily life is of great importance. The elevator keeping quantity, the annual output and the annual growth quantity of China are all located in the first place in the world. According to national laws and regulations, the installation and the use of the elevator need to be checked, and the elevator can be put into use after being checked to be qualified. However, government-dominated administrative tests have difficulty meeting the requirements of large markets, and the resulting inadequate tests are an important cause of frequent elevator accidents. The repeated inspection actually wastes a large amount of manpower and material resources, so that the very tense manpower resources for elevator installation, maintenance and inspection are tense.
Only by continuously improving the inspection efficiency, the elevator inspection device can adapt to the increase situation of the current elevator. Many measurements and tests are required during the inspection process. The method comprises an elevator load test, the whole testing process of the elevator load test consumes time and labor, and the elevator load test needs to place accurate testing loads in an elevator car to obtain a testing result for judging a testing conclusion. However, in actual practice, it is very difficult to perform the load test due to the field condition limitation.
How to obtain test data in a time-saving, labor-saving and accurate manner is the biggest problem encountered in the current elevator inspection. Therefore, an instrument is urgently needed, main parameters of a load test can be monitored, the weight of weights in a lift car is monitored, whether the load test is qualified by elevator installation and maintenance personnel is ensured, the load test is prevented from being repeatedly performed, side station confirmation of inspectors is effectively replaced, and the inspection efficiency is greatly improved.
Disclosure of Invention
The utility model provides an elevator load test device based on thing networking which characterized in that includes: the weight, read ware, singlechip, three-dimensional acceleration sensor, weight dolly and cell-phone terminal, paste RFID electronic tags on the weight, read the ware and be the RFID read write line, through the RFID read write line with RFID electronic tags's data transmission arrives the singlechip, singlechip and three-dimensional acceleration sensor install on the weight dolly, three-dimensional acceleration sensor's physics Z axle and gravity equidirectional, three-dimensional accelerator sensor's data transmission arrives the singlechip, the singlechip data are through wireless transmission to the cell-phone terminal.
Preferably, the wireless transmission can select Bluetooth connection or wifi connection.
Each weight in the elevator load test device is adhered with an RFID electronic tag, and the data of the RFID electronic tag is transmitted to the single chip microcomputer through the RFID reader-writer so as to monitor the load capacity of the elevator during the elevator load test.
A three-dimensional acceleration sensor and a monitoring terminal of a single chip microcomputer are installed on a weight trolley, the physical Z axis of the three-dimensional acceleration sensor is required to be always in the same direction as gravity during installation, the three-dimensional acceleration sensor can collect X, Y, Z axis signals, mainly focusing on Z axis (gravity direction) acceleration signals (the same as the running direction of a car), and Z axis pulse signal pulse signals of elevator braking are shown in a figure 2. The Z-axis acceleration signal is subjected to a first integral to obtain a Z-axis velocity signal V ═ a, and the Z-axis velocity signal is subjected to a second integral to obtain a braking distance data, that is, S ═ a. The displacement variation of the elevator car can be obtained through the secondary integration of the Z-axis acceleration, if each test is started from the lowest landing of the elevator, namely the initial position is confirmed, the real-time physical position of the elevator car can be obtained, and the braking distance of the elevator can be measured through the identification of the braking acceleration pulse.
The load capacity of the load test of the elevator and the real-time position of the elevator can be obtained through the steps, the real-time monitoring is obtained, meanwhile, the three-dimensional acceleration is subjected to data processing according to the standard of elevator riding quality measurement (GB/T24474-.
When the monitoring terminal selects no-load up-down operation, the vibration acceleration value A95 and peak-to-peak value of up-down operation can be measured, and whether the vibration acceleration value is qualified is judged according to the elevator riding quality measurement (GB/T24474-.
When the monitoring terminal selects a no-load brake test, whether the elevator car is in no-load is monitored, when the elevator runs from the bottommost layer to the middle landing, maintenance personnel cut off the power supply voltage of the motor, the elevator is effectively braked, the physical position and the braking distance during braking are monitored through the acceleration sensor, and whether the no-load brake test is qualified is obtained through comparing the braking distance with a valve value.
Through 40% and 50% load tests, the elevator which runs up and down to a middle landing (physical position is monitored through the No. 2) is measured through the pincerlike current monitoring module, and data are transmitted to the single chip microcomputer to obtain the balance coefficient of the elevator;
when the elevator is operated to the middle landing from top to bottom under the rated load of 50 percent of the load of the elevator, the operation speed of the elevator can be obtained through the primary integration of the acceleration of the Z axis, and the operation speed is compared with the valve value to judge whether the elevator is qualified;
when the monitoring terminal selects rated load for carrying out the test, the vibration acceleration value A95 and the peak value of the up-and-down running can be measured by detecting whether the load weight is rated load, and whether the test is qualified is judged according to the elevator riding quality measurement (GB/T24474-;
when the monitoring terminal selects a 125% braking test, whether the 125% braking test is qualified or not can be obtained by detecting whether the load capacity is 125% of rated load or not, measuring the braking distance when the elevator runs downwards from the highest floor to the middle landing and comparing the braking distance with a valve value;
when the monitoring terminal selects a static load test, whether the elevator slides and the like within 10 minutes can be monitored by detecting whether the load capacity is 125% of the rated load, and whether the elevator car displaces can be monitored.
When the monitoring terminal selects a safety gear braking test, whether the load capacity is 125% of the rated load can be detected, when the elevator runs downwards from the highest floor to the middle landing, the safety gear is manually operated, the braking distance of the safety gear is measured, and whether the safety gear braking test is qualified is judged by comparing the braking distance with a valve value.
The singlechip transmits the monitored data to the mobile phone APP through Bluetooth or wifi, and the mobile phone APP sets the initial value (such as rated speed, floor station number, lifting height and the like) of the singlechip through Bluetooth or wifi. The mobile phone can operate the remote printer through the APP to print the report of the elevator load test.
In order to improve the precision of the three-dimensional acceleration quadratic integral, the null shift of the acceleration sensor is inhibited, and the specific method is that when the lift car is not moved, the output value of the acceleration sensor is cleared, and the elevator speed output by the primary integral is also cleared simultaneously, so that the null shift can be effectively inhibited, and the precision is improved.
The invention has the beneficial effects that: the weight of the elevator car load is monitored in real time by using the RFID technology, so that the false phenomenon caused by maintenance and installation self-checking personnel is effectively avoided; utilize three-dimensional acceleration sensor to carry out parameter measurement to elevator no-load test, no-load braking, equilibrium coefficient measurement, speed test, volume load operation, 125% braking test, static test, full-load safety tongs braking test, include: braking distance, vibration acceleration (a95, etc.), running speed, balance coefficient, etc.; utilize cell-phone APP to carry out wireless communication to monitor terminal, realize internet of things such as parameter setting, measured data transmission, data processing to realize long-range printing monitoring report. Manpower and material resources are greatly reduced, and test data can be accurately obtained.
Drawings
FIG. 1 is a flow chart of the modules and inspection of an elevator load testing apparatus;
fig. 2 is a diagram of a Z-axis pulse signal of the three-dimensional acceleration sensor.
Detailed Description
The invention provides an elevator load test device based on the Internet of things, which comprises: weight, reading ware, singlechip, three-dimensional acceleration sensor, weight dolly and cell-phone terminal, the RFID electronic tags has been pasted on the weight, it is the RFID read write line to read the ware, through the RFID read write line will RFID electronic tags's data transmission arrives the singlechip, singlechip and three-dimensional acceleration sensor install on the weight dolly, three-dimensional acceleration sensor's physics Z axle and gravity syntropy, three-dimensional accelerator sensor's data transmission arrives the singlechip, the singlechip data arrives through wireless transmission the cell-phone terminal, wireless transmission can select bluetooth to connect or wifi connects.
Each weight in the elevator load test device is adhered with an RFID electronic tag, and the data of the RFID electronic tag is transmitted to the single chip microcomputer through the RFID reader-writer so as to monitor the load capacity of the elevator during the elevator load test.
A three-dimensional acceleration sensor and a monitoring terminal of a single chip microcomputer are installed on a weight trolley, the physical Z axis of the three-dimensional acceleration sensor is required to be always in the same direction as gravity during installation, the three-dimensional acceleration sensor can collect X, Y, Z axis signals, mainly focusing on Z axis (gravity direction) acceleration signals (the same as the running direction of a car), and Z axis pulse signal pulse signals of elevator braking are shown in a figure 2. The Z-axis acceleration signal is subjected to a first integral to obtain a Z-axis velocity signal V ═ a, and the Z-axis velocity signal is subjected to a second integral to obtain a braking distance data, that is, S ═ a. The displacement variation of the elevator car can be obtained through the secondary integration of the Z-axis acceleration, if each test is started from the lowest landing of the elevator, namely the initial position is confirmed, the real-time physical position of the elevator car can be obtained, and the braking distance of the elevator can be measured through the identification of the braking acceleration pulse.
The load capacity of the load test of the elevator and the real-time position of the elevator can be obtained through the steps, the real-time monitoring is obtained, meanwhile, the three-dimensional acceleration is subjected to data processing according to the standard of elevator riding quality measurement (GB/T24474-.
When the monitoring terminal selects no-load up-down operation, the vibration acceleration value A95 and peak-to-peak value of up-down operation can be measured, and whether the vibration acceleration value is qualified is judged according to the elevator riding quality measurement (GB/T24474-.
When the monitoring terminal selects a no-load brake test, whether the elevator car is in no-load is monitored, when the elevator runs from the bottommost layer to the middle landing, maintenance personnel cut off the power supply voltage of the motor, the elevator is effectively braked, the physical position and the braking distance during braking are monitored through the acceleration sensor, and whether the no-load brake test is qualified is obtained through comparing the braking distance with a valve value.
Through 40% and 50% load tests, the elevator which runs up and down to a middle landing (physical position is monitored through the No. 2) is measured through the pincerlike current monitoring module, and data are transmitted to the single chip microcomputer to obtain the balance coefficient of the elevator;
when the elevator is operated to the middle landing from top to bottom under the rated load of 50 percent of the load of the elevator, the operation speed of the elevator can be obtained through the primary integration of the acceleration of the Z axis, and the operation speed is compared with the valve value to judge whether the elevator is qualified;
when the monitoring terminal selects rated load for carrying out the test, the vibration acceleration value A95 and the peak value of the up-and-down running can be measured by detecting whether the load weight is rated load, and whether the test is qualified is judged according to the elevator riding quality measurement (GB/T24474-;
when the monitoring terminal selects a 125% braking test, whether the 125% braking test is qualified or not can be obtained by detecting whether the load capacity is 125% of rated load or not, measuring the braking distance when the elevator runs downwards from the highest floor to the middle landing and comparing the braking distance with a valve value;
when the monitoring terminal selects a static load test, whether the elevator slides and the like within 10 minutes can be monitored by detecting whether the load capacity is 125% of the rated load, and whether the elevator car displaces can be monitored.
When the monitoring terminal selects a safety gear braking test, whether the load capacity is 125% of the rated load can be detected, when the elevator runs downwards from the highest floor to the middle landing, the safety gear is manually operated, the braking distance of the safety gear is measured, and whether the safety gear braking test is qualified is judged by comparing the braking distance with a valve value.
The singlechip transmits the monitored data to the mobile phone APP through Bluetooth or wifi, and the mobile phone APP sets the initial value (such as rated speed, floor station number, lifting height and the like) of the singlechip through Bluetooth or wifi. The mobile phone can operate the remote printer through the APP to print the report of the elevator load test.
In order to improve the precision of the three-dimensional acceleration quadratic integral, the null shift of the acceleration sensor is inhibited, and the specific method is that when the lift car is not moved, the output value of the acceleration sensor is cleared, and the elevator speed output by the primary integral is also cleared simultaneously, so that the null shift can be effectively inhibited, and the precision is improved.
The above description is only a preferred embodiment of the present invention, and all equivalent changes and modifications made in accordance with the claims of the present invention should be covered by the present invention.
Claims (2)
1. The utility model provides an elevator load test device based on thing networking which characterized in that includes: the weight, read ware, singlechip, three-dimensional acceleration sensor, weight dolly and cell-phone terminal, paste RFID electronic tags on the weight, read the ware and be the RFID read write line, through the RFID read write line with RFID electronic tags's data transmission arrives the singlechip, singlechip and three-dimensional acceleration sensor install on the weight dolly, three-dimensional acceleration sensor's physics Z axle and gravity equidirectional, three-dimensional accelerator sensor's data transmission arrives the singlechip, the singlechip data are through wireless transmission to the cell-phone terminal.
2. The elevator load test device based on the internet of things as claimed in claim 1, wherein: the wireless transmission can select Bluetooth connection or wifi connection.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010881640.3A CN114104884A (en) | 2020-08-27 | 2020-08-27 | Elevator load test device based on Internet of things |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010881640.3A CN114104884A (en) | 2020-08-27 | 2020-08-27 | Elevator load test device based on Internet of things |
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| CN114104884A true CN114104884A (en) | 2022-03-01 |
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| CN202010881640.3A Pending CN114104884A (en) | 2020-08-27 | 2020-08-27 | Elevator load test device based on Internet of things |
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Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900675A (en) * | 2014-05-12 | 2014-07-02 | 华东交通大学 | Novel lift weighing device detection method based on pliers-type lever mechanism |
| CN207581094U (en) * | 2017-12-06 | 2018-07-06 | 重庆市特种设备检测研究院 | A kind of elevator load device |
| CN108267212A (en) * | 2018-01-05 | 2018-07-10 | 扬州工业职业技术学院 | Electronic scale school weight verifying attachment and its school weight method of inspection |
| CN208308166U (en) * | 2018-05-18 | 2019-01-01 | 江苏省特种设备安全监督检验研究院 | Elevator load tests TT&C system |
| CN109748168A (en) * | 2019-01-16 | 2019-05-14 | 安徽中科智能高技术有限责任公司 | A kind of 1.25 times of retardation test no-load test devices of towed elevator and test method |
| CN209940218U (en) * | 2019-02-27 | 2020-01-14 | 南京市特种设备安全监督检验研究院 | Elevator weight test device |
-
2020
- 2020-08-27 CN CN202010881640.3A patent/CN114104884A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103900675A (en) * | 2014-05-12 | 2014-07-02 | 华东交通大学 | Novel lift weighing device detection method based on pliers-type lever mechanism |
| CN207581094U (en) * | 2017-12-06 | 2018-07-06 | 重庆市特种设备检测研究院 | A kind of elevator load device |
| CN108267212A (en) * | 2018-01-05 | 2018-07-10 | 扬州工业职业技术学院 | Electronic scale school weight verifying attachment and its school weight method of inspection |
| CN208308166U (en) * | 2018-05-18 | 2019-01-01 | 江苏省特种设备安全监督检验研究院 | Elevator load tests TT&C system |
| CN109748168A (en) * | 2019-01-16 | 2019-05-14 | 安徽中科智能高技术有限责任公司 | A kind of 1.25 times of retardation test no-load test devices of towed elevator and test method |
| CN209940218U (en) * | 2019-02-27 | 2020-01-14 | 南京市特种设备安全监督检验研究院 | Elevator weight test device |
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Application publication date: 20220301 |