CN117092719B - Elevator light curtain reliability testing device and testing method - Google Patents
Elevator light curtain reliability testing device and testing method Download PDFInfo
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- CN117092719B CN117092719B CN202311058052.XA CN202311058052A CN117092719B CN 117092719 B CN117092719 B CN 117092719B CN 202311058052 A CN202311058052 A CN 202311058052A CN 117092719 B CN117092719 B CN 117092719B
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- 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
- B66B5/0087—Devices facilitating maintenance, repair or inspection tasks
- B66B5/0093—Testing of safety devices
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V13/00—Manufacturing, calibrating, cleaning, or repairing instruments or devices covered by groups G01V1/00 – G01V11/00
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01V—GEOPHYSICS; GRAVITATIONAL MEASUREMENTS; DETECTING MASSES OR OBJECTS; TAGS
- G01V8/00—Prospecting or detecting by optical means
- G01V8/10—Detecting, e.g. by using light barriers
- G01V8/20—Detecting, e.g. by using light barriers using multiple transmitters or receivers
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Abstract
The invention relates to the technical field of elevators, in particular to an elevator light curtain reliability testing device and an elevator light curtain reliability testing method. And a shelter path planning method is provided, so that detection dead angles are avoided. The shielding object can be in a stepped shaft shape, the purpose of simultaneous detection of the shielding objects with multiple specifications is achieved, a third mounting surface can be additionally arranged, and the testing efficiency is improved. And the service life of the light curtain can be calculated through retrograde aging test. The invention has the advantages of high automation degree, accurate test and high test efficiency.
Description
Technical Field
The invention relates to the technical field of elevators, in particular to an elevator light curtain reliability testing device and an elevator light curtain reliability testing method.
Background
An elevator light curtain is an elevator door safety protection device manufactured by utilizing a photoelectric induction principle and is used for protecting the safety of elevator personnel and articles. The door closing protection device generally adopts an infrared light curtain, the infrared light curtain is composed of a transmitting component and a receiving component, the transmitting end transmits an infrared light beam to the receiving end to receive the infrared light beam, and 5.3.6.2.2.1 in GB/T7588.1-2020 specifies:
1. the protection device (such as light curtain) can at least cover the area 25-1600 mm above the car sill
2. The protection device should be able to detect obstacles with a diameter not smaller than 50 mm.
However, the standard does not clearly mark how much the detection accuracy is qualified, so when a customer purchases the elevator light curtain of my department, the customer can set a purchase standard by himself, and the elevator light curtain provided by my department is required to meet the error rate of millions of times of detection below a certain value, so that the elevator light curtain can be regarded as qualified, and no testing device meeting the clear requirements exists in the market at present. There are also more stringent customers who require elevator light curtains to be able to detect obstacles having diameters of not less than 46 mm.
In the prior art, CN109655939B, a light curtain automatic testing device, the distance between the shielding object and the light curtain is fixed, the detection result is easy to be inaccurate, and the blind area cannot be detected.
CN 113624450B-a method and a system for testing a correlation light curtain, wherein the distance between a shielding object and the light curtain is fixed, the detection result is easy to be inaccurate, and a blind area cannot be detected.
CN 206378152U-a performance testing device for a double-layer light curtain sensor, although the distance between the shielding object and the light curtain is adjustable, the position of the blind area can not be detected.
Disclosure of Invention
The invention solves the problems that: in the prior art, a blind area of an elevator light curtain cannot be detected through millions of measurements, and the elevator light curtain reliability testing device and testing method are provided.
The invention is realized by the following technical scheme that the elevator light curtain reliability testing device comprises a frame, wherein two mounting surfaces are arranged on the frame, a TX end fixing bracket and an RX end fixing bracket are slidably arranged on the first mounting surface, the TX end fixing bracket and the RX end fixing bracket are mutually parallel, a light curtain TX end and a light curtain RX end are respectively arranged through a first clamping mechanism and a second clamping mechanism, a rectangular plane area from the top end to the bottom end between the light curtain TX end and the light curtain RX end is a detection area,
the second installation face of the frame is provided with a first moving mechanism, a switching support, a second moving mechanism, a reciprocating moving mechanism and a shielding object, the first moving mechanism and the second moving mechanism are provided with position control and position feedback functions, the first moving mechanism and the second moving mechanism can be selected in various manners, and the synchronous belt sliding table module comprises a servo sliding table, a linear motor, a synchronous belt sliding table module and the like. The two constitute cross slide mechanism, and reciprocating mechanism is installed to cross slide mechanism's active end, reciprocating mechanism's active end is installed and is sheltered from the thing, reciprocating mechanism is in the reciprocating motion process of extension/shortening, shelter from the thing and can pass/leave the detection zone, reciprocating mechanism department is provided with the sensor subassembly that can detect at least that reciprocating mechanism reaches extension/shortening limit stroke, can select to use photoelectric switch, linear displacement sensor, hall sensor etc. according to the function of sensor subassembly, and this scheme adopts groove type photoelectric switch.
The control box is installed to the frame side, be provided with button and control panel on the control box casing, be provided with the control unit in the control box, light curtain TX end, light curtain RX end, first moving mechanism, second moving mechanism, reciprocating motion mechanism, sensor subassembly all with control unit electric connection.
The reciprocating mechanism can adopt cylinder, servo slip table, linear electric motor, hold-in range slip table module etc. this scheme adopts step motor driven slider-crank structure, reciprocating mechanism includes connecting plate, first step motor, first speed reducer, crank, connecting rod, guide arm, linear bearing, the connecting plate is fixed on the movable end of cross slide mechanism, first step motor, first speed reducer, linear bearing are fixed on the connecting plate, first step motor and first speed reducer transmission are connected, output shaft crank, connecting rod, the guide arm of first speed reducer rotate in proper order and are connected, the outer slip of guide arm is provided with linear bearing, shelter from thing detachable installs the front end at the guide arm.
Further, the shielding object is a cylinder with the diameter of 50 mm. The sensor assembly adopts two groove-type photoelectric switches, a switch shielding piece is arranged on the reciprocating mechanism, and when the middle part of a shielding object passes through a detection area and the shielding object is far away from the detection area, the two groove-type photoelectric switches are shielded.
Further, the shielding object is in a stepped shaft shape, one end close to the reciprocating mechanism is a section of cylinder with the diameter of 50mm, the diameter of the cylinder far away from the direction of the reciprocating mechanism is gradually reduced, the diameter is 48mm, 46mm and 44mm in sequence, the sensor assembly is provided with 5 detection points, the middle position of the cylinder section with the diameter of 50mm is located at the plane of the detection area, the middle position of the cylinder section with the diameter of 48mm is located at the plane of the detection area, the middle position of the cylinder section with the diameter of 46mm is located at the plane of the detection area, the middle position of the cylinder section with the diameter of 44mm is located at the plane of the detection area, the shielding object is far away from the plane of the detection area, the sensor assembly adopts a groove type photoelectric switch, and the reciprocating mechanism is provided with a switch shielding piece, and the groove type photoelectric switch is shielded by the switch when the middle position of the cylinder with different diameters is just located at the plane of the detection area and the shielding object is far away from the detection area.
Further, the TX end fixing bracket and the RX end fixing bracket are driven to move on the first mounting surface through a third moving mechanism and a fourth moving mechanism respectively, and the third moving mechanism and the fourth moving mechanism have position control and position feedback functions.
Further, a third mounting surface is further arranged on the frame, the third mounting surface and the first mounting surface are symmetrically arranged, another group of TX end fixing brackets, RX end fixing brackets, a light curtain TX end and a light curtain RX end are arranged, the light curtain TX end on the first mounting surface and the light curtain TX end on the third mounting surface are located on different sides, another shielding object is symmetrically fixed at the rear of the shielding object, and the two shielding objects are driven to reciprocate by the reciprocating mechanism at the same time.
In another aspect of the invention, a method for testing reliability of an elevator light curtain is provided, which comprises the following steps:
step one, inputting parameters: parameters input through the control panel comprise the intervals of the light curtain TX end and the light curtain RX end, the heights of the light curtains and the set test times;
step two, executing movement: the control unit sends out a control instruction to control the first moving mechanism and the second moving mechanism to act, so that the shielding object moves in the detection area according to the set path, and meanwhile, the control unit sends out a control instruction to control the reciprocating mechanism to drive the shielding object to extend/retract in a reciprocating manner;
step three, data acquisition: the sensor component detects whether the reciprocating mechanism reaches the limit stroke of extension/shortening, the light curtain TX end continuously emits infrared scanning beams, the light curtain RX end detects whether the infrared scanning beams are shielded, and the first moving mechanism and the second moving mechanism feed back real-time coordinate positions of the shielding objects;
Step four, judging the process: when the sensor assembly detects that the reciprocating movement mechanism reciprocates once, the control unit records a system action, and during the period, the light curtain RX end records a continuous shielding signal once, checks the system action and the light curtain action, judges whether the signal which extends to the limit stroke and is detected by the sensor assembly only once is arranged between each section of continuous shielding signal, judges whether the signal which is retracted to the limit stroke and is detected by the sensor assembly only once is arranged between each section of continuous non-shielding signal, if the judgment result is yes, the judgment result is normal, if the judgment result is no, the coordinate point of the shielding object at the moment is recorded as abnormal coordinates, and the occurrence time of the abnormal state is abnormal time;
step five, obtaining a detection result: the device continuously operates until the system action times reach the set test times, the test is stopped, the obtained total abnormal times are compared with the standard values to obtain a test result, and whether a detection blind area appears or not is analyzed according to the abnormal coordinate points to finish the test.
Further, in the second step, the set path includes a plurality of double-circulation paths, each double-circulation path includes a single-circulation path covering a moving area twice, the moving area is a rectangular area after the detecting area is inwardly shifted by the radius length of the shielding object, the main directions of two single-circulation paths of the same double-circulation path are mutually perpendicular, the single-circulation path includes a plurality of single paths which are covered on the moving area and are arranged at equal intervals, and edge paths connecting the plurality of single paths into a continuous path at the edge of the moving area, the shape of the single paths is one of a straight line, a wavy line and a broken line, and when the next double-circulation path is performed after the one double-circulation path is completed, the next double-circulation path performs one or more of the following various adjustment schemes relative to the previous double-circulation path: not adjusting; performing offset adjustment on the position of the path node; changing the angle of the main direction of the path; changing the shape of the path; and (5) adjusting the moving speed.
Further, the TX end fixing support and the RX end fixing support are respectively driven to move on the first mounting surface through a third moving mechanism and a fourth moving mechanism, the third moving mechanism and the fourth moving mechanism are respectively provided with a position control and a position feedback function, in the first process, after the distance between the light curtain TX end and the light curtain RX end is input, the third moving mechanism and the fourth moving mechanism automatically move the light curtain TX end and the light curtain RX end to proper positions, and the control unit directly calibrates the position of the detection area according to the transverse coordinates fed back by the third moving mechanism and the fourth moving mechanism,
meanwhile, a dynamic detection mode is added: in the second process, the transverse coordinates of the light curtain TX end, the light curtain RX end and the shielding object are compared in real time, and the light curtain TX end and the light curtain RX end are driven by the third moving mechanism and the fourth moving mechanism to move left and right under the condition of not interfering the shielding object, so that the opening and closing actions of the elevator door are simulated.
Further, the shielding object is in a stepped shaft shape, and the testing steps are as follows:
step one, inputting parameters: the input parameters comprise the intervals of the light curtain TX end and the light curtain RX end, the heights of the light curtains and the set test times;
Step two, executing movement: the control unit sends out a control instruction to control the first moving mechanism and the second moving mechanism to act, so that the shielding object moves in the detection area according to the set path, and meanwhile, the control unit sends out a control instruction to control the reciprocating mechanism to drive the shielding object to extend/retract in a reciprocating manner;
step three, data acquisition: the sensor component detects the state positions of the shielding object, namely the shielding object is positioned at a plane far away from the detection area, the middle position of the 44mm cylindrical section is positioned at the plane of the detection area, the middle position of the 46mm cylindrical section is positioned at the plane of the detection area, the middle position of the 48mm cylindrical section is positioned at the plane of the detection area, the middle position of the 50mm cylindrical section is positioned at the plane of the detection area, the light curtain TX end continuously emits an infrared scanning beam, the light curtain RX end detects whether the infrared scanning beam is shielded or not, and the first moving mechanism and the second moving mechanism feed back the real-time coordinate positions of the shielding object;
step four, judging the process: when the sensor component detects that the reciprocating movement mechanism reciprocates once, the control unit records a system action, during which, each time the light curtain RX end detects a continuous shielding signal, the system action is recorded, the position signal detected by the sensor component in the process from the process of being far away from the detection area to the process of being completely in the detection area is checked with the light curtain action, when the middle position of the 44mm cylindrical section is positioned at the plane of the detection area, when the middle position of the 46mm cylindrical section is positioned at the plane of the detection area, when the middle position of the 48mm cylindrical section is positioned at the plane of the detection area, the light curtain detects the shielding signal, and judges whether the light curtain does not have the shielding signal when the shielding object is positioned at the plane of the detection area, if the shielding object is positioned at the plane of being far away from the detection area, the judgment result is yes, the system action is marked as normal, if the judgment result is no, the coordinate point of the shielding object is recorded, the abnormal state is abnormal time, and the time of occurrence of the abnormal state is calculated independently;
Step five, obtaining a detection result: the device continuously runs until the system action times reach the set test times, the test is stopped, the independent abnormal times of each segment of 50mm, 48mm, 46mm and 44mm are obtained, the test result of each segment is obtained compared with the standard value, whether a detection blind area appears or not is analyzed according to the abnormal coordinate points, and the test is completed.
Further, the frame bottom is provided with the gyro wheel, and the frame passes through the gyro wheel and removes to the high low temperature incasement, sets for operating temperature, humidity and operating time to with switch action number of times, switch action number of times and light curtain action number of times pass through the leading-in high low temperature control box of USB interface, the operating condition of real-time detection light curtain, through the environmental suitability of temperature simulation light curtain under the low temperature of in-service use or high temperature, high humidity environment and the recognition capability to standard shielding under different environment, increase the stability of product under actual environment, and evaluate product life-span, through built-in calculation formula:
wherein Lnomal is the average life of the product at normal temperature; lstress is the average lifetime of the product at high temperature; ea is the activation energy, typically estimated at 0.7eV according to electron transfer. K is Boltzmann constant, and the value is 8.617 multiplied by 10 < -5 > eV/K; tnormal is the kelvin temperature of the product under normal use, and the room temperature is generally 25 ℃, namely tnormal=25+273=298K; tstress is the experimental Kelvin temperature;
According to the actual real-time detection number, the service life of the product in a high-temperature and high-humidity environment is reduced, and the average life of the product is evaluated by testing the average time before the product is failed through multiple samples.
The beneficial effects of the invention are as follows:
1. the invention can set times, automatically detect rated times, realize automatic telescopic shielding to detect the action accuracy of the light curtain, record abnormal coordinate positions and abnormal time, facilitate analysis of blind areas of the elevator light curtain, improve detection accuracy and can be used for subsequent product improvement work.
2. The invention has the advantages that the light curtain TX end and the light curtain RX end can move according to the set parameters due to the existence of the third moving mechanism and the fourth moving mechanism, and can move in the test to simulate the opening and closing actions of the elevator door, thereby improving the authenticity of the test.
3. The path planning method of the invention realizes uniform detection without omission, the single circulation path forms equidistant sweeping coverage to the moving area through the combination of the single path and the edge path, two mutually perpendicular single circulation paths are overlapped to form a grid-shaped path, and adjacent double circulation paths are adjusted through various schemes, so that the shielding object can uniformly and repeatedly move in the moving area, the precise detection is realized, and the occurrence of dead angles of detection is avoided.
4. The shielding object can be in a stepped shaft shape, the accuracy of the action of the light curtain under the four-diameter shielding object can be tested in one round trip of the shielding object, the testing of the limiting light curtain is included in the testing of 44mm, and the performance of the light curtain can be deeply known.
5. The invention is also provided with a third mounting surface, and two groups of elevator light curtains and two shielding objects are symmetrically arranged, so that the action accuracy of the two groups of elevator light curtains can be tested at one time, and the light curtain testing efficiency is improved. The general customer needs to provide test data of four groups of light curtains, so that two groups of light curtains can be tested simultaneously, and the test time can be shortened by half.
6. The invention can also be provided with rollers, and the rollers can be pushed into a high-low temperature box for aging test, and the service life of the light curtain under the normal temperature environment and the failure rate curve of the product are converted by calculation through accelerated aging under the high-temperature and high-humidity environment.
Drawings
FIG. 1 is a schematic diagram of a first embodiment;
FIG. 2 is an enlarged view of a portion of the portion I in FIG. 1
FIG. 3 is an exploded view of the shuttle mechanism of FIG. 2;
FIG. 4 is a top view of the first embodiment;
FIG. 5 is a schematic diagram of a control panel according to a first embodiment;
FIG. 6 is a schematic diagram of a detection zone and a movement zone;
FIG. 7 is a schematic diagram of the structural composition of a dual circulation path;
FIG. 8 is a schematic diagram of a multiple dual cycle path stack;
fig. 9 is a schematic structural diagram of a second embodiment;
FIG. 10 is an enlarged view of a portion of FIG. 9 at II;
FIG. 11 is a top view of a second embodiment;
FIG. 12 is a schematic view of two stepped shaft-like shutters in a second embodiment operating simultaneously;
FIG. 13 is a schematic view of a control panel according to a second embodiment;
FIG. 14 is a schematic diagram of a test apparatus according to the third embodiment in a high-low temperature chamber;
fig. 15 is a schematic view of a control panel of the high and low temperature cabinet.
In the figure:
1, a frame; 101 a first mounting surface; 102 a second mounting surface; 103 a third mounting surface;
2TX end fixed support;
3RX end fixing bracket;
4, a first clamping mechanism;
5 a second clamping mechanism;
a light curtain TX end;
7, an RX end of the light curtain;
8 a first moving mechanism;
9, switching the bracket;
10 a second movement mechanism;
11 a reciprocating mechanism; 1101 a connection plate; 1102 a first stepper motor; 1103 first speed reducer; 1104 crank; 1105 a connecting rod; 1106 a guide rod; 1107 linear bearings;
12 a shade;
a 13 sensor assembly;
14, a control box;
15 detection area;
16 movement zones;
17 double circulation paths; 171 single circulation path; 1711 a single path; 1712 an edge path;
18, rolling wheels;
19 high-low temperature boxes;
a third movement mechanism 20;
21 a fourth movement mechanism.
Detailed Description
The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is apparent that the described embodiments are only some of the embodiments of the present invention, i.e. Shi Li, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
First embodiment, as shown in fig. 1-4, an elevator light curtain reliability testing device comprises a frame 1, two installation surfaces are arranged on the frame 1, a TX end fixing support 2 and an RX end fixing support 3 are slidably arranged on a first installation surface 101, the TX end fixing support 2 and the RX end fixing support 3 are respectively driven to move on the first installation surface 101 through a third moving mechanism 20 and a fourth moving mechanism 21, and the third moving mechanism 20 and the fourth moving mechanism 21 have position control and position feedback functions. The TX end fixing support 2 and the RX end fixing support 3 are parallel to each other, and the light curtain TX end 6 and the light curtain RX end 7 are respectively installed through the first clamping mechanism 4 and the second clamping mechanism 5, as shown in fig. 6, a rectangular plane area from top to bottom between the light curtain TX end 6 and the light curtain RX end 7 is a detection area 15. Due to the third moving mechanism 20 and the fourth moving mechanism 21, the light curtain TX end 6 and the light curtain RX end 7 can move according to set parameters, and can move in the test to simulate the opening and closing actions of the elevator door, so that the authenticity of the test is improved.
The second mounting surface 102 of the frame 1 is provided with a first moving mechanism 8, a switching bracket 9, a second moving mechanism 10, a reciprocating mechanism 11 and a shielding object 12, wherein the shielding object 12 is a cylinder with the diameter of 50 mm. The first moving mechanism 8 and the second moving mechanism 10 have the functions of position control and position feedback, and the first moving mechanism 8 and the second moving mechanism 10 can have various choices, including a servo sliding table, a linear motor, a synchronous belt sliding table module and the like. The two components form a cross sliding mechanism, a reciprocating mechanism 11 is arranged at the movable end of the cross sliding mechanism, a shielding object 12 is arranged at the movable end of the reciprocating mechanism 11, the shielding object 12 can pass through/leave a detection area 15 in the extending/shortening reciprocating movement process of the reciprocating mechanism 11, a sensor component 13 is arranged at the position of the reciprocating mechanism 11, a photoelectric switch, a linear displacement sensor, a Hall sensor and the like can be selected according to the function of the sensor component 13, the scheme adopts two groove-type photoelectric switches, as shown in fig. 2-3, a switch shielding sheet is arranged on the reciprocating mechanism 11, when the middle part of the shielding object 12 passes through the detection area 15 and the shielding object 12 is far away from the detection area 15, one groove-type photoelectric switch is shielded, the response of the groove-type photoelectric switch is sensitive, the cost is low, and the test requirement can be met.
The control box 14 is installed on the side face of the frame 1, keys and a control panel are arranged on the shell of the control box 14, a control unit is arranged in the control box 14, and the light curtain TX end 6, the light curtain RX end 7, the first moving mechanism 8, the second moving mechanism 10, the reciprocating mechanism 11 and the sensor component 13 are electrically connected with the control unit. The control box 14 is provided with a USB interface, and test parameters can be imported from the USB interface or can be set manually. The control panel may display information such as the number of switching operations, the number of light curtain operations, abnormal coordinate points, and abnormal time, as shown in fig. 5.
As shown in fig. 2-3, the reciprocating mechanism 11 may adopt a cylinder, a servo sliding table, a linear motor, a synchronous belt sliding table module and the like, the scheme adopts a crank sliding block structure driven by a stepping motor, the reciprocating mechanism 11 comprises a connecting plate 1101, a first stepping motor 1102, a first speed reducer 1103, a crank 1104, a connecting rod 1105, a guide rod 1106 and a linear bearing 1107, the connecting plate 1101 is fixed on the movable end of the cross sliding mechanism, the first stepping motor 1102, the first speed reducer 1103 and the linear bearing 1107 are fixed on the connecting plate 1101, the first stepping motor 1102 is in transmission connection with the first speed reducer 1103, an output shaft crank 1104 of the first speed reducer 1103, the connecting rod 1105 and the guide rod 1106 are sequentially connected in a rotating manner, the guide rod 1106 is provided with the linear bearing 1107 in an external sliding manner, and the shielding object 12 is detachably arranged at the front end of the guide rod 1106. The crank block structure converts the rotation of the first stepping motor 1102 into linear motion, and the shielding and the far-away actions of the shielding object are realized. In practical test, the time of retraction is not participated in detection after the shielding object is extended to the longest, so that the return time can be shortened, the rotating speed of the first stepping motor 1102 is regulated according to the signal of the groove type photoelectric switch, the first stepping motor 1102 slowly enters and rapidly exits, and unnecessary time loss is reduced.
The corresponding test method of the embodiment comprises the following steps:
step one, inputting parameters: parameters input through the control panel include the distance between the light curtain TX end 6 and the light curtain RX end 7, the height of the light curtain and the set test times, which are generally one million times; the third moving mechanism 20 and the fourth moving mechanism 21 automatically move the light curtain TX end 6 and the light curtain RX end 7 to appropriate positions,
step two, executing movement: the control unit sends out a control instruction to control the first moving mechanism 8 and the second moving mechanism 10 to act so that the shielding object 12 moves in the detection area 15 according to a set path, and at the same time, the control unit sends out a control instruction to control the reciprocating mechanism 11 to drive the shielding object 12 to extend and retract reciprocally; the control unit directly calibrates the position of the detection area 15 according to the transverse coordinates fed back by the third moving mechanism 20 and the fourth moving mechanism 21;
as shown in fig. 7-8, the set path of the shielding object 12 includes multiple double-circulation paths 17, each double-circulation path 17 includes two single-circulation paths 171 covering a moving area 1616, the moving area 1616 is a rectangular area after the detecting area 15 is shifted inward by the radius length of the shielding object 12, the main directions of two single-circulation paths 171 of the same double-circulation path 17 are perpendicular to each other, the single-circulation path 171 includes multiple single paths 1711 covering the moving area 16 and arranged at equal intervals, and edge paths 1712 connecting the multiple single paths 1711 into continuous paths at the edge of the moving area 16, the shape of the single paths 1711 is one of a straight line, a wavy line and a broken line, and after completing one double-circulation path 17, the next double-circulation path 17 performs one or more of the following adjustment schemes with respect to the previous double-circulation path 17: not adjusting; performing offset adjustment on the position of the path node; changing the angle of the main direction of the path; changing the shape of the path; and (5) adjusting the moving speed. As shown in fig. 7, the single circulation path 171 forms an equidistant sweeping coverage by the combination of the single path 1711 and the edge path 1712, two mutually perpendicular single circulation paths 171 are overlapped to form a grid-like path, and adjacent double circulation paths 17 are adjusted by various schemes, so that the shielding object 12 moves uniformly and repeatedly in the moving area 16, and the accurate detection thereof is realized.
In this step, the transverse coordinates of the light curtain TX end 6, the light curtain RX end 7 and the shielding object 12 are compared in real time, and the light curtain TX end 6 and the light curtain RX end 7 are driven by the third moving mechanism 20 and the fourth moving mechanism 21 to move left and right under the condition of not interfering the shielding object 12, so as to simulate the opening and closing actions of the elevator door, realize dynamic simulation, more approximate to the real situation, and improve the testing accuracy.
Step three, data acquisition: the sensor assembly 13 detects whether the reciprocating mechanism 11 reaches the limit stroke of extension/shortening, the light curtain TX end 6 continuously emits infrared scanning beams, the light curtain RX end 7 detects whether the infrared scanning beams are shielded, and the first moving mechanism 8 and the second moving mechanism 10 feed back real-time coordinate positions of the shielding objects 12;
step four, judging the process: every time the sensor assembly 13 detects the reciprocating movement of the reciprocating movement mechanism 11 once, the control unit records as a system action, during the period, the light curtain RX end 7 records as a light curtain action every time a continuous shielding signal is detected, the system action and the light curtain action are checked, whether the signal which extends to the limit stroke and is detected by the sensor assembly 13 is detected only once between each section of continuous shielding signals is judged, whether the signal which is retracted to the limit stroke and is detected by the sensor assembly 13 is detected only once between each section of continuous non-shielding signals is judged, if the judgment result is yes, the judgment result is normal, if the judgment result is no, the coordinate point of the shielding object 12 at the moment is recorded as abnormal coordinates, and the occurrence time of the abnormal state is abnormal time;
Step five, obtaining a detection result: the device continuously operates until the system action times reach the set test times, the test is stopped, the obtained total abnormal times are compared with the standard values to obtain a test result, and whether a detection blind area appears or not is analyzed according to the abnormal coordinate points to finish the test. As shown in fig. 5, the test procedure and results are displayed in real time through the control panel.
In the second embodiment, as shown in fig. 9 to 13, the difference between the present embodiment and the first embodiment is that: the shielding object 12 is in a stepped shaft shape, referring to fig. 10, one end, close to the reciprocating mechanism 11, of the shielding object is a section of cylinder with the diameter of 50mm, the diameter of the cylinder in the direction away from the reciprocating mechanism 11 is gradually reduced, 48mm, 46mm and 44mm are sequentially arranged, the sensor assembly 13 is provided with 5 detection points, namely, the middle position of the cylinder with the diameter of 50mm is located at the plane of the detection area 15, the middle position of the cylinder with the diameter of 48mm is located at the plane of the detection area 15, the middle position of the cylinder with the diameter of 46mm is located at the plane of the detection area 15, the middle position of the cylinder with the diameter of 44mm is located at the plane of the detection area 15, the shielding object 12 is away from the plane of the detection area 15, the sensor assembly 13 adopts 5 groove-type photoelectric switches, the reciprocating mechanism 11 is provided with switch shielding pieces, and when the middle position of the cylinder with the diameter of each different diameter is just located at the plane of the detection area 15, and the shielding object 12 is far away from the detection area 15, the groove-type photoelectric switches are shielded by the switch shielding pieces. The test of 4 diameter shields can be completed in one round trip of the shield, including the test of 44mm at the limit, and the performance of the light curtain can be further understood.
And a third mounting surface 103 is further arranged on the frame 1, the third mounting surface 103 and the first mounting surface 101 are symmetrically arranged, another group of TX end fixing brackets 2, an RX end fixing bracket 3, a light curtain TX end 6 and a light curtain RX end 7 are arranged, the light curtain TX end 6 on the first mounting surface 101 and the light curtain TX end 6 on the third mounting surface 103 are positioned on different sides, another shielding object 12 is symmetrically fixed behind the shielding object 12, and the two shielding objects 12 are simultaneously driven to reciprocate by the reciprocating mechanism 11. The scheme can test two groups of elevator light curtains at one time, and improves the light curtain test efficiency. The general customer needs to provide test data of four groups of light curtains, so that two groups of light curtains can be tested simultaneously, and the test time can be shortened by half.
The testing method corresponding to the embodiment comprises the following steps:
the test can be regarded as two groups of symmetrical testers, and the same group of first moving mechanism 8, second moving mechanism 10 and reciprocating mechanism 11 are shared, and two groups of light curtain TX ends 6 and light curtain RX ends 7 with the same specification are tested simultaneously, so that the test efficiency can be improved.
Step one, inputting parameters: parameters input through the control panel comprise the distance between the light curtain TX end 6 and the light curtain RX end 7, the height of the light curtain and the set test times; the third moving mechanism 20 and the fourth moving mechanism 21 automatically move the two sets of the light curtain TX end 6 and the light curtain RX end 7 to appropriate positions,
Step two, executing movement: the control unit sends out a control instruction to control the first moving mechanism 8 and the second moving mechanism 10 to act so that the shielding object 12 moves in the detection area 15 according to a set path, and at the same time, the control unit sends out a control instruction to control the reciprocating mechanism 11 to drive the shielding object 12 to extend and retract reciprocally; the control unit directly calibrates the position of the detection area 15 according to the transverse coordinates fed back by the third moving mechanism 20 and the fourth moving mechanism 21; the two groups of light curtain TX ends 6 and light curtain RX ends 7 are driven by the two groups of third moving mechanisms 20 and fourth moving mechanisms 21 to move left and right under the condition of not interfering with the shielding object 12, so as to simulate the opening and closing actions of the elevator door.
Step three, data acquisition: the sensor assembly 13 detects 5 status positions of the shade 12, as shown in fig. 12, respectively:
1. the shield 12 is located at a plane away from the detection area 15 on the first mounting surface 101, while the middle position of the 50mm cylindrical section of the other shield 12 is located at the plane of the detection area 15 on the third mounting surface 103;
2. the middle position of the 44mm cylindrical section is located at the plane of the detection area 15 on the first mounting surface 101, while the middle position of the 48mm cylindrical section of the other shutter 12 is located at the plane of the detection area 15 on the third mounting surface 103;
3. The middle position of the 46mm cylindrical section is located at the plane of the detection area 15 on the first mounting surface 101, while the middle position of the 46mm cylindrical section of the other shutter 12 is located at the plane of the detection area 15 on the third mounting surface 103;
4. the middle position of the 48mm cylindrical section is located at the plane of the detection area 15 on the first mounting surface 101, while the middle position of the 44mm cylindrical section of the other shutter 12 is located at the plane of the detection area 15 on the third mounting surface 103;
5. the middle position of the 50mm cylindrical section is located at the plane of the detection area 15 on the first mounting surface 101, while the other shutter 12 is located away from the plane of the detection area 15 on the third mounting surface 103;
the light curtain TX end 6 continuously emits infrared scanning light beams, the light curtain RX end 7 detects whether the infrared scanning light beams are shielded, and the first moving mechanism 8 and the second moving mechanism 10 feed back real-time coordinate positions of the shielding object 12; the two groups of light curtains are detected simultaneously.
Step four, judging the process: each time the sensor assembly 13 detects the reciprocating movement of the reciprocating movement mechanism 11, the control unit records a system action, during which, each time the continuous shielding signal is detected by the light curtain RX end 7, the system action is recorded, the position signal detected by the sensor assembly 13 in the process from the position far away from the detection area 15 to the position completely entering the detection area 15 in the system action is checked with the light curtain action, when the middle position of the 44mm cylindrical section is positioned at the plane of the detection area 15, when the middle position of the 46mm cylindrical section is positioned at the plane of the detection area 15, when the middle position of the 48mm cylindrical section is positioned at the plane of the detection area 15, the light curtain detects the shielding signal, and whether the light curtain does not have the shielding signal when the shielding object 12 is positioned at the plane far away from the detection area 15 is judged, if yes, the system action is marked as normal, if no, the coordinate point of the shielding object 12 is recorded, the time when the abnormal state occurs is abnormal time, and the detection results of four segments of 50mm, 48mm, 46mm and 44mm are calculated independently; the light curtain on the first installation surface and the third installation surface are judged independently.
Step five, obtaining a detection result: the device continuously runs until the system action times reach the set test times, the test is stopped, the independent abnormal times of the sections of 50mm, 48mm, 46mm and 44mm of the two groups of light curtains are obtained, the test results of the sections are obtained compared with the standard values, whether the detection blind areas appear or not is analyzed according to the abnormal coordinate points, and the two groups of light curtain tests are completed. The general customer needs to provide test data of four groups of light curtains, so that two groups of light curtains can be tested simultaneously, and the general test time can be shortened. This scheme can once only test two sets of elevator light curtains, improves light curtain efficiency of software testing.
14-15, the roller 18 is disposed at the bottom of the frame 1, the frame 1 moves into the high-low temperature box 19 through the roller 18, the working temperature, the humidity and the working time are set, the switching operation times and the light curtain operation times are led into the high-low temperature control box 14 through the USB interface, the working state of the light curtain is detected in real time, the environmental adaptability of the temperature simulation light curtain in the low-temperature or high-temperature and high-humidity environment in actual use and the recognition capability of standard shielding in different environments are adjusted, the stability of the product in the actual environment is increased, the service life of the product is evaluated, and the product life is estimated through the built-in calculation formula:
Wherein Lnomal is the average life of the product at normal temperature; lstress is the average lifetime of the product at high temperature; ea is the activation energy, typically estimated at 0.7eV according to electron transfer. K is Boltzmann constant, and the value is 8.617 multiplied by 10 < -5 > eV/K; tnormal is the kelvin temperature of the product under normal use, and the room temperature is generally 25 ℃, namely tnormal=25+273=298K; tstress is the experimental Kelvin temperature;
according to the actual real-time detection number, the service life of the product in a high-temperature and high-humidity environment is reduced, and the average life of the product is evaluated by testing the average time before the product is failed through multiple samples.
In summary, the elevator light curtain reliability testing device provided by the invention realizes efficient and accurate measurement, has no detection dead angle, can test the working states of the elevator light curtain under various diameter shields, can simultaneously perform measurement in two groups, and greatly improves the testing efficiency.
The foregoing has outlined and described the basic principles, features, and advantages of the present invention. It should be understood by those skilled in the art that the foregoing embodiments are merely illustrative of the technical concept and features of the present invention, and the present invention can be implemented by those skilled in the art without limiting the scope of the invention, therefore, all equivalent changes or modifications that are made according to the spirit of the present invention should be included in the scope of the present invention.
Claims (10)
1. An elevator light curtain reliability testing arrangement, its characterized in that: comprises a frame (1), two mounting surfaces are arranged on the frame (1), a first mounting surface (101) is slidably provided with a TX end fixing support (2) and an RX end fixing support (3), the TX end fixing support (2) and the RX end fixing support (3) are mutually parallel, an optical curtain TX end (6) and an optical curtain RX end (7) are respectively arranged through a first clamping mechanism (4) and a second clamping mechanism (5), a rectangular plane area from the top end to the bottom end is a detection area (15) between the optical curtain TX end (6) and the optical curtain RX end (7),
the second mounting surface (102) of the frame (1) is provided with a first moving mechanism (8), a switching support (9), a second moving mechanism (10), a reciprocating moving mechanism (11) and a shielding object (12), the first moving mechanism (8) and the second moving mechanism (10) are provided with position control and position feedback functions, a cross sliding mechanism is formed by the first moving mechanism (8) and the second moving mechanism (10), the movable end of the cross sliding mechanism is provided with the reciprocating moving mechanism (11), the movable end of the reciprocating moving mechanism (11) is provided with the shielding object (12), the shielding object (12) is in a stepped shaft shape, the diameter of a cylinder of the shielding object (12) far away from the direction of the reciprocating moving mechanism (11) is gradually reduced, the shielding object (12) can pass through/leave a detection area (15) in the extending/shortening reciprocating moving process, the reciprocating moving mechanism (11) is provided with a sensor component (13) which can at least detect whether the reciprocating moving mechanism (11) reaches the extending/shortening limit stroke,
The intelligent control device is characterized in that a control box (14) is arranged on the side face of the frame (1), keys and a control panel are arranged on a shell of the control box (14), a control unit is arranged in the control box (14), and the light curtain TX end (6), the light curtain RX end (7), the first moving mechanism (8), the second moving mechanism (10), the reciprocating moving mechanism (11) and the sensor assembly (13) are electrically connected with the control unit.
2. The elevator light curtain reliability test device according to claim 1, wherein: the shielding object (12) is a cylinder with the diameter of 50 mm.
3. The elevator light curtain reliability test device according to claim 1, wherein: the one end that shelter from thing is close to reciprocating motion mechanism (11) is the cylinder of one section diameter 50mm, is 48mm, 46mm, 44mm in proper order in the cylinder diameter that keeps away from reciprocating motion mechanism (11) direction, sensor subassembly (13) are provided with 5 check points, are 50mm cylinder section middle part positions in the plane department of detection region (15), 48mm cylinder section middle part positions in the plane department of detection region (15), 46mm cylinder section middle part positions in the plane department of detection region (15), 44mm cylinder section middle part positions in the plane department of detection region (15), shelter from thing (12) and keep away from the plane of detection region (15).
4. An elevator light curtain reliability test apparatus according to any one of claims 1-3, characterized in that: the TX end fixed support (2) and the RX end fixed support (3) are driven to move on the first mounting surface (101) through a third moving mechanism (20) and a fourth moving mechanism (21) respectively, and the third moving mechanism (20) and the fourth moving mechanism (21) have position control and position feedback functions.
5. An elevator light curtain reliability test apparatus according to any one of claims 1-3, characterized in that: the frame (1) is further provided with a third mounting surface (103), the third mounting surface (103) and the first mounting surface (101) are symmetrically arranged, another group of TX end fixing brackets (2), RX end fixing brackets (3), light curtain TX ends (6) and light curtain RX ends (7) are arranged, the light curtain TX ends (6) on the first mounting surface (101) and the light curtain TX ends (6) on the third mounting surface (103) are located on different sides, another shielding object (12) is symmetrically fixed at the rear of the shielding object (12), and the two shielding objects (12) are driven to reciprocate simultaneously by the reciprocating mechanism (11).
6. The test method of the elevator light curtain reliability test device according to claim 1, wherein: the method comprises the following steps:
Step one, inputting parameters: parameters input through the control panel comprise the distance between the light curtain TX end (6) and the light curtain RX end (7), the height of the light curtain and set test times;
step two, executing movement: the control unit sends out a control instruction to control the first moving mechanism (8) and the second moving mechanism (10) to act, so that the shielding object (12) moves in the detection area (15) according to a set path, and meanwhile, the control unit sends out a control instruction to control the reciprocating moving mechanism (11) to drive the shielding object (12) to extend/retract in a reciprocating mode;
step three, data acquisition: the sensor assembly (13) detects whether the reciprocating mechanism (11) reaches the limit stroke of extension/shortening, the light curtain TX end (6) continuously emits infrared scanning beams, the light curtain RX end (7) detects whether the infrared scanning beams are shielded, and the first moving mechanism (8) and the second moving mechanism (10) feed back real-time coordinate positions of a shielding object (12);
step four, judging the process: every time the sensor assembly (13) detects the reciprocating movement of the reciprocating movement mechanism (11), the control unit records as a system action, during the period, the light curtain RX end (7) records as a light curtain action every time a continuous shielding signal is detected, the system action and the light curtain action are checked, whether the signal which extends to the limit stroke is detected by the sensor assembly (13) for only one time between each section of continuous shielding signal, whether the signal which retracts to the limit stroke is detected by the sensor assembly (13) for only one time between each section of continuous non-shielding signal is judged, if the judgment result is yes, the mark is normal, if the judgment result is no, the coordinate point of the shielding object (12) at the moment is recorded as abnormal coordinates, and the occurrence time of the abnormal state is abnormal time;
Step five, obtaining a detection result: the device continuously operates until the system action times reach the set test times, the test is stopped, the obtained total abnormal times are compared with the standard values to obtain a test result, and whether a detection blind area appears or not is analyzed according to the abnormal coordinate points to finish the test.
7. The elevator light curtain reliability test method according to claim 6, wherein: in the second step, the set paths include multiple double-circulation paths (17), each double-circulation path (17) includes a single-circulation path (171) covering the moving area (16) (16) twice, the moving area (16) is a rectangular area after the detecting area (15) is inwardly shifted by the radius length of the shielding object (12), the main directions of two single-circulation paths (171) of the same double-circulation path (17) are mutually perpendicular, the single-circulation path (171) includes a plurality of single paths (1711) covering the moving area (16) and arranged at equal intervals, and the plurality of single paths (1711) are connected into an edge path (1712) of a continuous path at the edge of the moving area (16), the shape of the single path (1711) is one of a straight line, a wavy line and a broken line, and after completing one double-circulation path (17), the next double-circulation path (17) performs one or more of the following adjustment schemes relative to the previous double-circulation path (17): not adjusting; performing offset adjustment on the position of the path node; changing the angle of the main direction of the path; changing the shape of the path; and (5) adjusting the moving speed.
8. The elevator light curtain reliability test method according to claim 6, wherein: the TX end fixed support (2) and the RX end fixed support (3) are respectively driven to move on the first mounting surface through a third moving mechanism (20) and a fourth moving mechanism (21), the third moving mechanism (20) and the fourth moving mechanism (21) have the functions of position control and position feedback, in the first process, after the distance between the light curtain TX end (6) and the light curtain RX end (7) is input, the third moving mechanism (20) and the fourth moving mechanism (21) automatically move the light curtain TX end (6) and the light curtain RX end (7) to the proper positions, and the control unit directly calibrates the position of the detection area (15) according to the transverse coordinates fed back by the third moving mechanism (20) and the fourth moving mechanism (21),
meanwhile, a dynamic detection mode is added: in the second step, the transverse coordinates of the light curtain TX end (6), the light curtain RX end (7) and the shielding object (12) are compared in real time, and the light curtain TX end (6) and the light curtain RX end (7) are driven by the third moving mechanism (20) and the fourth moving mechanism (21) to move left and right under the condition that the shielding object (12) is not interfered, so that the opening and closing actions of the elevator door are simulated.
9. The elevator light curtain reliability test method according to any one of claims 6-8, wherein: the shielding object (12) adopts a stepped shaft shape, and the testing steps are as follows:
Step one, inputting parameters: the input parameters comprise the distance between the light curtain TX end (6) and the light curtain RX end (7), the height of the light curtain and the set test times;
step two, executing movement: the control unit sends out a control instruction to control the first moving mechanism (8) and the second moving mechanism (10) to act, so that the shielding object (12) moves in the detection area (15) according to a set path, and meanwhile, the control unit sends out a control instruction to control the reciprocating moving mechanism (11) to drive the shielding object (12) to extend/retract in a reciprocating mode;
step three, data acquisition: the sensor assembly (13) detects 5 state positions of the shielding object (12), namely the shielding object (12) is located at a plane far away from the detection area (15), the middle position of the 44mm cylindrical section is located at the plane of the detection area (15), the middle position of the 46mm cylindrical section is located at the plane of the detection area (15), the middle position of the 48mm cylindrical section is located at the plane of the detection area (15), the middle position of the 50mm cylindrical section is located at the plane of the detection area (15), the light curtain TX end (6) continuously emits infrared scanning light beams, the light curtain RX end (7) detects whether the infrared scanning light beams are shielded or not, and the first moving mechanism (8) and the second moving mechanism (10) feed back real-time coordinate positions of the shielding object (12);
Step four, judging the process: every time the sensor assembly (13) detects the reciprocating movement of the reciprocating movement mechanism (11), the control unit records as a system action, during which, every time the light curtain RX end (7) detects a continuous shielding signal, the system action is recorded as a light curtain action, the position signal detected by the sensor assembly (13) from the process of being far from the detection area (15) to completely entering the detection area (15) is checked with the light curtain action, sequentially judging whether a light curtain detects a shielding signal when the middle position of the 44mm cylindrical section is positioned at the plane of the detection area (15), when the middle position of the 46mm cylindrical section is positioned at the plane of the detection area (15), when the middle position of the 48mm cylindrical section is positioned at the plane of the detection area (15), and judging whether the light curtain does not have the shielding signal when the shielding object (12) is positioned at the plane far away from the detection area (15), if so, marking as normal, if not, recording coordinate points of the shielding object (12) at the moment as abnormal coordinates, wherein the occurrence time of the abnormal conditions is abnormal time, and the four segmentation detection results of 50mm, 48mm, 46mm and 44mm are calculated independently;
Step five, obtaining a detection result: the device continuously runs until the system action times reach the set test times, the test is stopped, the independent abnormal times of each segment of 50mm, 48mm, 46mm and 44mm are obtained, the test result of each segment is obtained compared with the standard value, whether a detection blind area appears or not is analyzed according to the abnormal coordinate points, and the test is completed.
10. The elevator light curtain reliability test method according to any one of claims 6-8, wherein:
the frame (1) bottom is provided with gyro wheel (18), in frame (1) moved to high low temperature case (19) through gyro wheel (18), set for operating temperature, humidity and operating time, and with switch action number of times, switch action number of times and light curtain action number of times are led into high low temperature control case (14) through the USB interface, detect the operating condition of light curtain in real time, through the environmental suitability of temperature simulation light curtain under the low temperature of in-service use or high temperature, high humidity environment and the discernment ability to standard shielding under different environment, increase the stability of product under the actual environment, and evaluate the product life, through built-in calculation formula:
wherein Lnomal is the average life of the product at normal temperature; lstress is the average lifetime of the product at high temperature; ea is the activation energy, typically estimated as 0.7eV by electron transfer; k is Boltzmann constant, and the value is 8.617 multiplied by 10 < -5 > eV/K; tnormal is the kelvin temperature of the product under normal use, and the room temperature is generally 25 ℃, namely tnormal=25+273=298K; tstress is the experimental Kelvin temperature;
According to the actual real-time detection number, the service life of the product in a high-temperature and high-humidity environment is reduced, and the average life of the product is evaluated by testing the average time before the product is failed through multiple samples.
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