CN115027902A - Method and device for determining installation position of safety control device - Google Patents

Method and device for determining installation position of safety control device Download PDF

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Publication number
CN115027902A
CN115027902A CN202210607536.4A CN202210607536A CN115027902A CN 115027902 A CN115027902 A CN 115027902A CN 202210607536 A CN202210607536 A CN 202210607536A CN 115027902 A CN115027902 A CN 115027902A
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distance
conveyor belt
requirement
value range
shielding
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CN115027902B (en
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王韦亭
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Siemens Factory Automation Engineering Ltd
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Siemens Factory Automation Engineering Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G43/00Control devices, e.g. for safety, warning or fault-correcting
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2201/00Indexing codes relating to handling devices, e.g. conveyors, characterised by the type of product or load being conveyed or handled
    • B65G2201/02Articles
    • B65G2201/0202Agricultural and processed food products
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2203/00Indexing code relating to control or detection of the articles or the load carriers during conveying
    • B65G2203/02Control or detection
    • B65G2203/0208Control or detection relating to the transported articles
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B65CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65GTRANSPORT OR STORAGE DEVICES, e.g. CONVEYORS FOR LOADING OR TIPPING, SHOP CONVEYOR SYSTEMS OR PNEUMATIC TUBE CONVEYORS
    • B65G2203/00Indexing code relating to control or detection of the articles or the load carriers during conveying
    • B65G2203/04Detection means
    • B65G2203/042Sensors
    • B65G2203/044Optical
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P90/00Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
    • Y02P90/02Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]

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  • Control Of Conveyors (AREA)
  • Escalators And Moving Walkways (AREA)
  • Length Measuring Devices By Optical Means (AREA)

Abstract

The embodiment of the invention provides a method, a device, equipment and a medium for determining the installation position of a safety control device, wherein the method comprises the following steps: acquiring preset size requirement information which meets the safety control requirement of a safety control device; the safety control device comprises at least two shielding sensors, at least two reflectors and at least one safety light curtain device, wherein the reflectors correspond to the shielding sensors one by one, and the preset size requirement information comprises light rays emitted by the shielding sensors, a light curtain net formed by the safety light curtain devices and a distance requirement between at least two intersection points formed by the edges of conveying belts in the conveying system; acquiring field layout size information after installation of the safety light curtain equipment; and determining the value ranges of the respective installation positions of the at least two shielding sensors and the at least two reflectors according to the preset size requirement information and the field layout size information. The invention does not need manual repeated adjustment, trial and error and the like, thereby saving the cost.

Description

Method and device for determining installation position of safety control device
Technical Field
The present invention relates to the field of safety control technologies, and in particular, to a method, an apparatus, a device, and a medium for determining an installation position of a safety control device in a transport system.
Background
A safety control device is generally installed on a conveying chain conveying system in the food and beverage industry, the safety control device comprises a safety light curtain, a shielding sensor, a light reflecting plate and the like, and the safety control on the conveying chain conveying system can be realized through the safety control device.
In order to ensure that the safety requirement that the safety alarm is not caused when the materials pass through the conveyor belt and the safety alarm is caused when the personnel pass through the conveyor belt, the installation position of the safety control device is strict. At present, a pure manual tape measure is generally adopted to measure a reverse thrust position, repeated adjustment and trial and error are carried out, several hours of delay is usually caused in the measuring and adjusting links, and the safety requirements cannot be met.
Disclosure of Invention
The invention provides a method, a device, equipment and a medium for determining the installation position of a safety control device, which do not need manual repeated adjustment, trial and error and the like, and save the cost.
In a first aspect, an embodiment of the present invention provides a method for determining an installation position of a safety control device, including:
acquiring preset size requirement information which meets the safety control requirement of the safety control device; the safety control device comprises at least two shielding sensors, at least two reflectors and at least one safety light curtain device, wherein the reflectors correspond to the shielding sensors one by one, and the preset size requirement information comprises light rays emitted by the shielding sensors, a light curtain net formed by the safety light curtain device and a distance requirement between at least two intersection points formed by the edges of conveying belts in a conveying system;
acquiring field layout size information after the safety light curtain equipment is installed;
and determining the value ranges of the respective installation positions of the at least two shielding sensors and the at least two reflectors according to the preset size requirement information and the field layout size information.
In a second aspect, an embodiment of the present invention provides an installation position determination device for a safety control device, including:
a first acquisition module for acquiring preset size requirement information meeting the safety control requirement of the safety control device; the safety control device comprises at least two shielding sensors, at least two reflectors corresponding to the at least two shielding sensors one to one and at least one safety light curtain device, wherein the preset size requirement information comprises light rays emitted by the shielding sensors, a light curtain net formed by the safety light curtain device and a distance requirement between at least two intersection points formed by the edges of a conveying belt in a conveying system;
the second acquisition module is used for acquiring the field layout size information after the safety light curtain equipment is installed;
and the range determining module is used for determining the value ranges of the respective installation positions of the at least two shielding sensors and the at least two reflectors according to the preset size requirement information and the field layout size information.
In a third aspect, an embodiment of the present invention provides a computing device, including: at least one memory and at least one processor;
the at least one memory to store a machine readable program;
the at least one processor is configured to invoke the machine-readable program to perform the method provided by the first aspect.
In a fourth aspect, the present invention provides a computer-readable medium, on which computer instructions are stored, and when executed by a processor, the computer instructions cause the processor to execute the method provided in the first aspect.
According to the installation position determining method, the installation position determining device, the installation position determining equipment and the installation position determining medium of the safety control device, firstly, preset size requirement information meeting safety control requirements of the safety control device is obtained, field layout size information after the safety light curtain equipment is installed is obtained, and then value ranges of installation positions of a shielding sensor and a reflector are determined according to the preset size requirement information and the field layout size information. In the process, the preset size requirement information meeting the safety control requirement of the safety control device is considered, so that the value range of the respective installation positions of the finally determined shielding sensor and the light reflecting plate meets the safety control requirement. And the field layout size information is acquired after the safety light curtain equipment is installed, and the value range of the installation position of each of the shielding sensor and the reflector is determined according to the field layout size information, so that the obtained installation position also accords with the layout condition of the field safety light curtain equipment. The method provided by the embodiment of the invention does not need manual repeated adjustment, trial and error and the like, can save the labor cost and the time cost, and can ensure that the value ranges of the respective installation positions of the determined shielding sensor and the determined reflector meet the safety control requirement and the field layout condition of the safety light curtain equipment. For the user, the user can obtain the value ranges of the respective installation positions of the shielding sensor and the reflector only by inputting the size information on the human-computer interface, the method is very convenient for the user, any technician can do the method, and a complex algorithm does not need to be mastered.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained based on these drawings without creative efforts.
Fig. 1 is a schematic flowchart of a method for determining an installation position of a safety controller according to an embodiment of the present invention;
fig. 2 is a schematic layout diagram of a safety control device according to an embodiment of the present invention;
fig. 3 is a schematic flow chart of determining a value range of a mounting position of a first shielding sensor according to an embodiment of the present invention;
fig. 4 is a schematic flow chart of determining a value range of a mounting position of a second shielding sensor according to an embodiment of the present invention;
fig. 5 is a schematic flow chart illustrating a process of determining a value range of an installation position of a reflector corresponding to a second shielding sensor according to an embodiment of the present invention;
fig. 6 is a schematic flow chart illustrating a process of determining a value range of an installation position of a reflector corresponding to a first shielding sensor according to an embodiment of the present invention;
FIG. 7 is a schematic diagram illustrating the process of determining the length of line segment NO according to one embodiment of the present invention;
fig. 8 is a block diagram showing a configuration of an installation position determination device of a safety controller according to an embodiment of the present invention.
Figure BDA0003671987990000031
Figure BDA0003671987990000041
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer and more complete, the technical solutions in the embodiments of the present invention will be described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention, and based on the embodiments of the present invention, all other embodiments obtained by a person of ordinary skill in the art without creative efforts belong to the scope of the present invention.
In a first aspect, an embodiment of the present invention provides a method for determining an installation position of a safety control device.
Referring to fig. 1, a method provided by an embodiment of the present invention may include the following steps S110 to S130:
s110, acquiring preset size requirement information meeting the safety control requirement of the safety control device;
the safety control device comprises at least two shielding sensors, at least two reflectors in one-to-one correspondence with the at least two shielding sensors and at least one safety light curtain device, and the preset size requirement information comprises light rays emitted by the shielding sensors, a light curtain net formed by the safety light curtain device and the distance requirement between at least two intersection points formed by the edges of the conveyor belt in the conveying system.
In practice, the method may be executed by any device with computing capability, for example, a user inputs the preset size requirement information and the field layout size information on a human-computer interface of the device, and the device may output the value ranges of the respective installation positions of the two shielding sensors and the two reflection plates through a certain operation.
For example, referring to fig. 2, a light emitter is installed at one side of a conveyor belt and a light receiver is installed at the other side, thereby forming a light curtain net. Moreover, two shielding sensors are installed on one side of the conveyor belt, two reflectors are installed on the other side of the conveyor belt, and the two shielding sensors and the two reflectors are in one-to-one correspondence. Through the cooperation of safe light curtain, shielding sensor and reflector panel for can not cause safety alarm when the material passes through on the conveyer belt, and personnel can cause safety alarm when passing through, thereby realize safety control.
The light emitted by the shielding sensor reaches the corresponding reflector and then is returned. The safety light curtain apparatus includes a light emitter installed at one side of a conveyor belt and a light receiver installed at the other side of the conveyor belt such that a light curtain net formed between the light emitter and the light receiver is perpendicular to a moving direction of the conveyor belt.
It will be appreciated that the light emitted by the mask sensor will have an intersection with the light curtain web. If the at least two shielding sensors and the at least two light reflecting plates are in crossed correspondence, intersection points of light rays emitted by the at least two shielding sensors are also formed. The light rays emitted by the at least two shielding sensors and the light curtain net and the edge of the conveyor belt also have intersection points. In order to make the installation of the installation control device meet the safety control requirements, the distances between some intersection points are required, and the distance requirements are the preset size requirement information.
In one embodiment, the installation control device may adopt the following layout:
referring specifically to fig. 2, the at least two shielding sensors include a first shielding sensor 11 and a second shielding sensor 21, the first shielding sensor 11 and the second shielding sensor 21 are located on one side of a conveyor belt in the conveyor system, the reflector 12 corresponding to the first shielding sensor 11 and the reflector 22 corresponding to the second shielding sensor 21 are located on the other side of the conveyor belt in the conveyor system, the first shielding sensor 11 is located in a first area, and the second shielding sensor 21 is located in a second area; first light and second light intersect in conveyer belt 4 is along the central line of direction of motion, first light with the second light all with the light curtain net is crossing, first light is the light between first shielding sensor 11 and the reflector panel 12 that corresponds, the second light is the light between second shielding sensor 21 and the reflector panel 22 that corresponds.
That is, two shield sensors provided on one side of the conveyor belt 4 and two reflection plates provided on the other side of the conveyor belt 4 are employed in the installation control device. And the two shield sensors are located in different areas, since the first light emitted from the first shield sensor 11 and the second light emitted from the second shield sensor 21 are on the middle line of the conveyor belt, the two reflection plates are also located in different areas. The first ray and the second ray also both intersect the light curtain web.
In an actual working scene, the first area may be a safety area, the second area may be a dangerous area, the so-called safety area is an area where workers can move, and as main operating devices are located in the dangerous area, in order to avoid personal injury to the workers in the processing process, the workers should be prevented from entering the dangerous area to move.
Of course, other arrangements are possible besides the above, for example, four shield sensors and 4 reflectors are provided, and for example, the light rays emitted by the shield sensors are parallel. And the embodiment of the present invention is mainly directed to the mounting position determination with respect to the mounting control apparatus shown in fig. 2 hereinafter.
For the installation control device of the layout shown in fig. 2, the preset size requirement information may include a value range requirement of the first pitch, a value range requirement of the second pitch, and a value requirement of the third pitch; the first distance is a distance between a first intersection point and a second intersection point, the second distance is a distance between the first intersection point and a third intersection point, and the third distance is a distance between the intersection points of the first light ray and the second light ray and the light curtain net respectively; the first intersection point is an intersection point of the first light ray and the first conveyor belt edge 41, the second intersection point is an intersection point of the second light ray and the first conveyor belt edge 41, and the third intersection point is an intersection point of the light curtain net and the first conveyor belt edge 41; the first conveyor belt edge 41 is an edge of the conveyor belt on the same side as the shielding sensor.
That is to say, for the layout manner shown in fig. 2, the preset size requirement mainly includes two value range requirements and one value requirement, the two value range requirements are the value range requirement of the first interval and the value range requirement of the second interval, and the one value requirement is the value requirement of the third interval. The first intersection point is point R, the second intersection point is point T, and the third intersection point is point S, such that the first distance is the physical length of line segment RT in real space in fig. 2, the second distance is the physical length of line segment RS in real space in fig. 2, and the third distance is the physical length of line segment PQ in real space in fig. 2. In fig. 2, the first conveyor edge 41 is an edge of the line segment RT, and the second conveyor edge 42 is an edge of the line segment HJ.
For example, in practice, the first pitch has a value range requirement of [400,500], the second pitch has a value range requirement of [100,120], and the third pitch has a value range requirement of 500. The above values are in millimeters.
The specific operation principle of the safety control device shown in fig. 2 is roughly as follows:
(1) if the light curtain web is broken first, it is said that a person enters the hazard zone from the safety zone along the centerline of the conveyor because the person is less than 500 mm wide, the light curtain web will be broken first. In order to avoid the harm of the operating equipment in the dangerous area to personnel, the safety light curtain equipment can give an alarm, and then the safety loop can control the operating equipment in the dangerous area to stop.
(2) If the light rays emitted by the two shielding sensors are interrupted firstly and simultaneously, the explanation is that the material 5 moves from the safe area to the dangerous area or from the dangerous area to the safe area along the center line of the conveyor belt, because the width of the material 5 is generally more than 500 mm, the two shielding sensors and the safety light curtain device can not give an alarm in the condition, and further, the operating equipment in the dangerous area can normally operate.
(3) If a person walks along the edge of the conveyor belt, the light emitted by one shielding sensor is interrupted firstly, so that an alarm can be triggered when the light emitted by one shielding sensor is interrupted, and further, the safety loop can control the operating equipment in the dangerous area to stop.
The safety loop is connected with the shielding sensor and the safety light curtain device, and can control the operation equipment in the dangerous area to stop running when receiving the alarm of the shielding sensor and the safety light curtain device.
The third distance is used for distinguishing the width of the person from the width of the material 5, and further distinguishing whether the person is the person or the material 5. Wherein the first distance and the second distance can indirectly reflect the information of the width of the conveyor belt, the distance between the shielding sensor and the safety light curtain device, and the like. These messages have certain requirements, and the safety control device can only perform the best safety control function if the requirements are met.
S120, acquiring field layout size information after the safety light curtain equipment is installed;
during actual installation, the safety light curtain equipment can be installed firstly, after the safety light curtain equipment is installed, the installation positions of the shielding sensor and the reflector are determined by taking the safety light curtain equipment as reference, and the installation is carried out after the installation positions are determined.
The required field layout size information is different for safety control devices with different layouts. For the layout manner of the safety control device shown in fig. 2, the field layout size information may include a width of the conveyor belt, a distance between a first device 31 and the first conveyor belt edge 41, which are located on the same side as the shielding sensor, in the safety light curtain device, and a distance between a second device 32 and the second conveyor belt edge 42, which are located on the same side as the reflector, in the safety light curtain device; the first device 31 is one of a light emitter and a light receiver, and the second device 32 is the other of the light emitter and the light receiver; the second conveyor belt edge 42 is an edge of the two side edges of the conveyor belt, which is on the same side as the reflector.
That is, the width of the conveyor belt, i.e., the length of the line segment SI in fig. 2 in real physical space. The distance between the first device 31 and the first conveyor belt edge 41 of the safety light curtain device, which is located on the same side as the shielding sensor, is actually the length of the line segment ES in fig. 2 in the real physical space. The distance between the second device 32 and the second conveyor edge 42 of the safety light curtain device on the same side as the reflector is, in fact, the length of the line IF in fig. 2 in real physical space.
It will be appreciated that the field layout dimension information may be measured after the installation of the safety light curtain device and then input into a device having computing capabilities, such as a computer.
S130, determining value ranges of the installation positions of the at least two shielding sensors and the at least two reflectors according to the preset size requirement information and the field layout size information.
It can be understood that after the computer device obtains the preset size requirement information and the field layout size information, the value ranges of the respective installation positions of the two shielding sensors and the two reflectors can be determined according to the geometric relation between the geometric line segments in fig. 2.
In fig. 2, the range of the installation position of the first shielding sensor 11 is actually the range of the length of the line segment AE in the real physical space, the range of the installation position of the second shielding sensor 21 is actually the range of the length of the line segment ED in the real physical space, the range of the installation position of the reflector 12 corresponding to the first shielding sensor 11 is the length of the line segment CF in the real physical space, and the range of the installation position of the reflector 22 corresponding to the second shielding sensor 21 is the length of the line segment BF in the real physical space. Therefore, the value ranges are all referred to by the safety light curtain equipment.
The following determination is made in the following manner for the above four value ranges:
(1) the value range of the installation position of the first shielding sensor 11, that is, the value range of the length of the line segment AE in the real physical space:
in step S130, determining a value range of the respective installation positions of the at least two shielding sensors and the at least two reflectors, referring to fig. 3, may specifically include S131 and S132:
s131, determining a first expression corresponding to the fourth distance according to the proportional relation among the geometric line segments; wherein the first expression includes the width of the conveyor belt, the distance between the first device 31 and the first conveyor belt edge 41, the third distance, and the second distance; the fourth pitch is the distance between the first shielded sensor 11 and the first device 31, i.e. the length of the line segment AE in real physical space.
That is, the physical lengths of the line segment SI, the line segment ES, the line segment PQ, and the line segment RS in fig. 2 in the real space are included in the first expression.
Referring to FIG. 2, the length of the line segment PE is
Figure BDA0003671987990000081
The length of the line segment PS is
Figure BDA0003671987990000082
The length of the line segment RS is a second distance L 2 And (4) showing. W is the width of the conveyor belt, i.e. the length of the line segment SI in real physical space. L is 3 Is the third distance, i.e. the length of the line segment PQ in real physical space. L is a radical of an alcohol 22 Is the distance between the first device 31 and the first conveyor edge 41, i.e. the length of the line segment ES in real physical space. L is 2 Is the second distance, i.e. the length of the line segment RS in real physical space.
The geometric line segments have the following equal proportion relation:
Figure BDA0003671987990000091
based on the above equal proportional relationship, a first expression can be obtained as follows:
Figure BDA0003671987990000092
wherein L is 4 Is the fourth distance, i.e., the length of the line segment AE in real physical space.
S132, determining a value range of the fourth distance according to the value range requirement of the second distance, the value requirement of the third distance, the width of the conveyor belt, and the distance between the first device 31 and the first conveyor belt edge 41 in the first expression.
It can be understood that, in the first expression, the second interval is a range, so that after the rest parameters are brought into the first expression, the value range of the fourth interval can be obtained according to the value range requirement of the second interval.
For example, the second pitch has a value in the range of [100,120], so the fourth pitch has a value in the range of:
Figure BDA0003671987990000093
it can be seen that, by the above method, the value range of the length of the line segment AE in the real physical space can be obtained, so that the value range of the installation position of the first shielding sensor 11 can be obtained.
(2) The range of values of the installation position of the second shielding sensor 21, that is, the range of values of the length of the line segment DE in fig. 2 in the real physical space:
in S130, determining a value range of the respective installation positions of the at least two shielding sensors and the at least two reflectors, referring to fig. 4, may include the following steps S133 and S134:
s133, determining a second expression corresponding to the fifth distance according to the proportional relation among the geometric line segments; wherein the second expression includes the width of the conveyor belt, the distance between the first device 31 and the first conveyor belt edge 41, the third distance, the first distance, and the second distance; the fifth pitch is the distance between the second shield sensor 21 and the first device 31;
that is, the line segment SI, the line segment ES, the line segment PQ, the line segment RT, and the line segment RS in fig. 2 are included in the second expression.
Referring to FIG. 2, line segment QE may be expressed as
Figure BDA0003671987990000094
The line segment ST can be expressed as L 1 -L 2 The QS line segment can be expressed as
Figure BDA0003671987990000101
W is the width of the conveyor belt, i.e. the length of the line segment SI in real physical space. L is a radical of an alcohol 22 Is the spacing between the first device 31 and the first conveyor edge 41, i.e. the length of the line segment ES in real physical space. L is 3 Is the third distance, i.e. the length of the line segment PQ in real physical space. L is 2 Is the second distance, i.e. the length of the line segment RS in real physical space. L is 1 Is the first distance, i.e., the length of the line segment RT in real physical space.
The geometric line segments have the following equal proportion relation:
Figure BDA0003671987990000102
according to the proportional relation, a second expression can be obtained as follows:
Figure BDA0003671987990000103
in the formula, L 5 Is the fifth pitch, i.e., the length of the line segment DE in real physical space; w is the width of the belt, L 3 Is the third pitch, L 22 Between said first component 31 and said first conveyor edge 41Distance, L 2 Is the second pitch, L 1 Is the first pitch.
S134, determining a value range of the fifth distance according to the value range requirement of the first distance, the value range requirement of the second distance, the value requirement of the third distance, the width of the conveyor belt, and the distance between the first device 31 and the first conveyor belt edge 41 in the second expression.
It can be understood that, in the second expression, the first interval and the second interval are a range, and since the difference between the first interval and the second interval is the length of the segment ST, the value range requirement of the first interval and the second interval can be converted into the value range requirement of the low segment ST, and then the value range of the fifth interval is determined according to the value range requirement of the segment ST.
For example, the value range of the first pitch is required to be [400,500], the value range of the second pitch is required to be [100,120], so the value range of the line segment ST is required to be [280, 400], and the value range of the fifth pitch is:
Figure BDA0003671987990000104
it can be seen that, the value range of the length of the line segment DE in the real physical space can be obtained through the above manner, so that the value range of the installation position of the second shielding sensor 21 can be obtained.
(3) The value range of the installation position of the reflector corresponding to the second shielding sensor 21, that is, the length of the line segment BF in the real physical space:
determining the value ranges of the respective installation positions of the at least two shielding sensors and the at least two reflectors in S130, referring to fig. 5, may include the following steps S135 and S136:
s135, determining a third expression corresponding to the sixth interval according to the proportional relation between the geometric line segments; wherein the first expression includes the width of the conveyor belt, the spacing between the second device 32 and the second conveyor belt edge 42, the third spacing, and the second spacing; the sixth distance is a distance between the reflector corresponding to the second shielding sensor 21 and the second device 32;
that is, the third expression includes a line SI, a line IF, a line PQ, and a line RS.
Wherein the line QF can be expressed as
Figure BDA0003671987990000111
The line segment QI can be represented as
Figure BDA0003671987990000112
Line segment HI is equal in length to line segment RS, and thus line segment HI is denoted as L 2 . W is the width of the conveyor belt, i.e. the length of the line segment SI in real physical space. L is 3 Is the third distance, i.e. the length of the line segment PQ in real physical space. L is a radical of an alcohol 2 Is the second distance, i.e. the length of the line segment RS in real physical space. L is a radical of an alcohol 33 Is the distance between the second device 32 and the second conveyor edge 42, i.e., the length of the line segment IF in real physical space.
The geometric line segments have the following proportional relation:
Figure BDA0003671987990000113
the third expression can be derived from the above-mentioned proportional relationship as follows:
Figure BDA0003671987990000114
in the formula, L 6 The length of the line segment BF in real physical space for said sixth distance; w is the width of the belt, L 3 At the third pitch, L 33 Is the spacing, L, between the second device 32 and the second conveyor edge 42 2 Is the second pitch.
And S136, determining the value range of the sixth distance according to the value range requirement of the second distance, the value requirement of the third distance, the width of the conveyor belt and the distance between the second device 32 and the second conveyor belt edge 42 in the first expression.
It can be understood that, in the third expression, the second distance is a range, and therefore, the value range of the second distance can be substituted into the third expression, and the value range of the sixth distance can be obtained.
For example, the value range of the second pitch is required to be [100,120], so the value range of the sixth pitch is:
Figure BDA0003671987990000121
therefore, the value range of the length of the line segment BF in the real physical space can be obtained through the above method, so that the value range of the installation position of the reflector corresponding to the second shielding sensor 21 can be obtained.
(4) The distance between the reflector corresponding to the first shielded sensor 11 and the second device 32, i.e. the length of the line segment CF in the real physical space:
in S130, determining a value range of the respective installation positions of the at least two shielding sensors and the at least two reflectors, referring to fig. 6, may include the following steps S137 and S138:
s137, determining a fourth expression corresponding to the seventh distance according to the proportional relation among the geometric line segments; wherein the fourth expression includes the width of the conveyor belt, the spacing between the second device 32 and the second conveyor belt edge 42, the third spacing, the first spacing, and the second spacing; the seventh distance is a distance between the reflector corresponding to the first shielding sensor 11 and the second device 32;
that IS, the fourth expression includes a line segment IS, a line segment IF, a line segment PQ, a line segment RT, and a line segment RS.
Wherein the line segment PF can be expressed as
Figure BDA0003671987990000122
The line segment PI can be expressed as
Figure BDA0003671987990000123
The line JI is as long as the line ST, so the line can be expressed as L 1 -L 2 . W is the width of the conveyor belt, i.e. the length of the line segment SI in real physical space. L is 3 Is the third distance, i.e. the length of the line segment PQ in real physical space. L is 2 Is the second distance, i.e. the length of the line segment RS in real physical space. L is 33 Is the distance between the second device 32 and the second conveyor edge 42, i.e. the length of the line segment IF in real physical space. L is 1 Is the first distance, i.e., the length of the line segment RT in real physical space.
The geometric line segments have the following equal proportional relationship:
Figure BDA0003671987990000124
the fourth expression can be derived from the above-mentioned proportional relationship:
Figure BDA0003671987990000125
wherein L is 7 The length of the line segment CF in real physical space for the seventh spacing; w is the width of the belt, L 3 Is the third pitch, L 33 Is the spacing, L, between the second device 32 and the second conveyor edge 42 1 Is the first pitch, L 2 Is the second pitch.
And S138, determining the value range of the seventh distance according to the value range requirement of the first distance, the value range requirement of the second distance, the value requirement of the third distance, the width of the conveyor belt and the distance between the second device 32 and the second conveyor belt edge 42 in the fourth expression.
It can be understood that, in the fourth expression, the first distance and the second distance are a range, and since the difference between the first distance and the second distance is the length of the line segment ST, the value range requirement of the first distance and the second distance can be converted into the value range requirement of the low line segment ST, and then the value range of the seventh distance is determined according to the value range requirement of the line segment ST.
For example, the value range of the first interval is required to be [400,500], the value range of the second interval is required to be [100,120], so the value range of the line segment ST is required to be [280, 400], and the value range of the seventh interval is:
Figure BDA0003671987990000131
therefore, the value range of the length of the line segment CF in the real physical space can be obtained through the above method, so that the value range of the installation position of the reflector corresponding to the first shielding sensor 11 can be obtained.
In specific implementation, because the shielding sensors and the light reflecting plates are only value ranges, the length of the line segment NO can be further limited in order to obtain a more accurate installation range. That is, the step S130 of determining the value ranges of the respective installation positions of the at least two shielding sensors and the at least two reflectors, referring to fig. 7, may include steps S139 to S140:
s139, determining a fifth expression corresponding to the eighth interval according to the proportional relation among the geometric line segments; wherein the fifth expression includes the width of the conveyor belt, the third pitch, and the second pitch; the eighth interval is a distance from an intersection point of the first light ray and the second light ray to the light curtain net;
that is, the line segment SI, the line segment PQ, and the line segment RS in fig. 2 are included in the fifth expression.
Wherein the line segment PN can be expressed as
Figure BDA0003671987990000132
The line segment PE can be expressed as
Figure BDA0003671987990000133
Line AE can be expressed as
Figure BDA0003671987990000134
W is the width of the conveyor belt, i.e. the length of the line segment SI in real physical space. L is 3 Is the third distance, i.e. the length of the line segment PQ in real physical space. L is 22 Is the distance between the first device 31 and the first conveyor edge 41, i.e. the length of the line segment ES in real physical space. L is a radical of an alcohol 2 Is the second distance, i.e. the length of the line segment RS in real physical space.
The geometric line segments have the following proportional relation:
Figure BDA0003671987990000141
a fifth expression may be derived based on the above equal proportional relationship:
Figure BDA0003671987990000142
in the formula, L 8 Is the eighth pitch, i.e. the length of the line segment NO in real physical space. W is the width of the belt, L 3 Is the third pitch, L 2 Is the second pitch.
S140, determining the value range of the eighth interval according to the value range requirement of the second interval, the value requirement of the third interval and the width of the conveyor belt in the fifth expression.
It can be understood that, in the fifth expression, the second distance is a range, and the value range of the eighth distance can be determined according to the value range requirement of the second distance.
For example, the value range of the second pitch is required to be [100,120], so the value range of the eighth pitch is:
Figure BDA0003671987990000143
therefore, the value range of the length of the line segment NO in the real physical space can be obtained through the method, and therefore the value range of the distance between the intersection point O of the first light ray and the second light ray and the light curtain net is determined.
The value ranges of the mounting positions of the shielding sensors and the light reflecting plate can be determined through the value ranges of the fourth interval to the eighth interval.
In the embodiment of the invention, the preset size requirement information meeting the safety control requirement of the safety control device is firstly obtained, the field layout size information after the safety light curtain equipment is installed is obtained, and then the value range of the installation position of each of the shielding sensor and the reflector is determined according to the preset size requirement information and the field layout size information. In the process, the preset size requirement information meeting the safety control requirement of the safety control device is considered, so that the value range of the respective installation positions of the finally determined shielding sensor and the light reflecting plate meets the safety control requirement. And the field layout size information is acquired after the safety light curtain equipment is installed, and the value range of the installation position of each of the shielding sensor and the reflector is determined according to the field layout size information, so that the obtained installation position also accords with the layout condition of the field safety light curtain equipment. The method provided by the embodiment of the invention does not need manual repeated adjustment, trial and error and the like, can save the labor cost and the time cost, and can ensure that the value ranges of the respective installation positions of the determined shielding sensor and the reflector meet the safety control requirement and the field layout condition of the safety light curtain equipment. For the user, the user can obtain the value ranges of the respective installation positions of the shielding sensor and the reflector only by inputting the size information on the human-computer interface, the method is very convenient for the user, any technician can do the method, and a complex algorithm does not need to be mastered.
In a second aspect, an embodiment of the present invention provides an installation position determining apparatus for a safety control device, and referring to fig. 8, the apparatus 200 includes:
a first obtaining module 210, configured to obtain preset size requirement information meeting a safety control requirement of the safety control device; the safety control device comprises at least two shielding sensors, at least two reflectors and at least one safety light curtain device, wherein the reflectors correspond to the shielding sensors one by one, and the preset size requirement information comprises light rays emitted by the shielding sensors, a light curtain net formed by the safety light curtain device and a distance requirement between at least two intersection points formed by the edges of conveying belts in a conveying system;
a second obtaining module 220, configured to obtain field layout size information after the safety light curtain device is installed;
a range determining module 230, configured to determine, according to the preset size requirement information and the field layout size information, value ranges of respective installation positions of the at least two shielding sensors and the at least two reflectors.
In some embodiments, the at least two shielding sensors include a first shielding sensor and a second shielding sensor, the first shielding sensor and the second shielding sensor are located on one side of a conveyor belt in the conveying system, a reflector corresponding to the first shielding sensor and a reflector corresponding to the second shielding sensor are located on the other side of the conveyor belt in the conveying system, the first shielding sensor is located in a first area, and the second shielding sensor is located in a second area; a first light ray and a second light ray are intersected on a central line of the conveyor belt along the movement direction, the first light ray and the second light ray are both intersected with the light curtain net, the first light ray is a light ray between the first shielding sensor and the corresponding reflector, and the second light ray is a light ray between the second shielding sensor and the corresponding reflector;
correspondingly, the preset size requirement information comprises a value range requirement of a first interval, a value range requirement of a second interval and a value requirement of a third interval; the first distance is a distance between a first intersection point and a second intersection point, the second distance is a distance between the first intersection point and a third intersection point, and the third distance is a distance between the intersection points of the first light ray and the second light ray and the light curtain net respectively; the first intersection point is an intersection point of the first light ray and the edge of the first conveyor belt, the second intersection point is an intersection point of the second light ray and the edge of the first conveyor belt, and the third intersection point is an intersection point of the light curtain net and the edge of the first conveyor belt; the first conveyor belt edge is the edge on the same side as the shielding sensor in the two side edges of the conveyor belt.
In some embodiments, the field layout size information includes a width of the conveyor belt, a distance between a first device of the safety light curtain device located on the same side as the shielding sensor and an edge of the first conveyor belt, and a distance between a second device of the safety light curtain device located on the same side as the reflector and an edge of the second conveyor belt; the first device is one of a light emitter and a light receiver, and the second device is the other of the light emitter and the light receiver; the edges of the second conveyor belt are the edges of the two sides of the conveyor belt, which are on the same side as the reflector.
In some embodiments, the range determination module 230 includes:
a first determination unit configured to: determining a first expression corresponding to the fourth distance according to the proportional relation between the geometric line segments; wherein the first expression includes a width of the conveyor belt, a spacing between the first device and an edge of the first conveyor belt, the third spacing, and the second spacing; the fourth pitch is a distance between the first shield sensor and the first device;
a second determination unit configured to: and determining the value range of the fourth distance according to the value range requirement of the second distance, the value requirement of the third distance, the width of the conveyor belt and the distance between the first device and the edge of the first conveyor belt in the first expression.
Further, the first expression includes:
Figure BDA0003671987990000161
in the formula, L 4 At the fourth pitch, W is the width of the belt, L 3 Is the third pitch, L 22 Is the spacing, L, between the first device and the first conveyor belt edge 2 Is the second pitch.
In some embodiments, the range determination module 230 includes:
a third determination unit configured to: determining a second expression corresponding to the fifth interval according to the proportional relation among the geometric line segments; wherein the second expression includes a width of the conveyor belt, a spacing between the first device and an edge of the first conveyor belt, the third spacing, the first spacing, and the second spacing; the fifth pitch is a distance between the second shield sensor and the first device;
a fourth determination unit configured to: and determining the value range of the fifth interval according to the value range requirement of the first interval, the value range requirement of the second interval, the value requirement of the third interval, the width of the conveyor belt and the interval between the first device and the edge of the first conveyor belt in the second expression.
Further, the second expression includes:
Figure BDA0003671987990000162
in the formula, L 5 At the fifth pitch, W is the width of the belt, L 3 Is the third pitch, L 22 Is the spacing, L, between the first device and the first conveyor belt edge 2 Is the second pitch, L 1 Is the first pitch.
In some embodiments, the range determination module 230 includes:
a fifth determination unit configured to: determining a third expression corresponding to the sixth interval according to the proportional relation between the geometric line segments; wherein the first expression includes a width of the conveyor belt, a spacing between the second device and an edge of the second conveyor belt, the third spacing, and the second spacing; the sixth distance is a distance between the reflector corresponding to the second shielding sensor and the second device;
a sixth determining unit, configured to determine a value range of the sixth interval according to the value range requirement of the second interval, the value requirement of the third interval, the width of the conveyor belt, and the interval between the second device and the edge of the second conveyor belt in the first expression.
Further, the third expression includes:
Figure BDA0003671987990000171
in the formula, L 6 W is the width of the belt, L 3 Is the third pitch, L 33 Is the spacing, L, between the second device and the second conveyor edge 2 Is the second pitch.
In some embodiments, the range determination module 230 includes:
a seventh determining unit configured to: determining a fourth expression corresponding to the seventh interval according to the proportional relation between the geometric line segments; wherein the fourth expression includes a width of the conveyor belt, a spacing between the second device and an edge of the second conveyor belt, the third spacing, the first spacing, and the second spacing; the seventh distance is a distance between the reflector corresponding to the first shielding sensor and the second device;
an eighth determining unit configured to: and determining the value range of the seventh distance according to the value range requirement of the first distance, the value range requirement of the second distance, the value requirement of the third distance, the width of the conveyor belt and the distance between the second device and the edge of the second conveyor belt in the fourth expression.
Further, the fourth expression includes:
Figure BDA0003671987990000172
in the formula, L 7 At the seventh pitch, W is the width of the belt, L 3 Is the third pitch, L 33 Is the spacing, L, between the second device and the second conveyor edge 1 At the first pitch, L 2 Is the second pitch.
In some embodiments, the range determination module 230 includes:
a ninth determining unit, configured to determine a fifth expression corresponding to the eighth interval according to a proportional relationship between the geometric line segments; wherein the fifth expression includes the width of the conveyor belt, the third pitch, and the second pitch; the eighth interval is a distance from an intersection point of the first light ray and the second light ray to the light curtain net;
a tenth determining unit, configured to determine a value range of the eighth interval according to the value range requirement of the second interval, the value requirement of the third interval, and the width of the conveyor belt in the fifth expression.
Further, the fifth expression includes:
Figure BDA0003671987990000181
in the formula, L 8 At the eighth spacing, W is the width of the belt, L 3 At the third pitch, L 2 Is the second pitch.
It is to be understood that for the explanation, the detailed description, the beneficial effects, the examples and the like of the related contents in the apparatus provided in the embodiment of the present invention, reference may be made to the corresponding parts in the method provided in the first aspect, and details are not described herein again.
In a third aspect, an embodiment of the present invention provides a computing device, including: at least one memory and at least one processor;
the at least one memory to store a machine readable program;
the at least one processor is configured to invoke the machine-readable program to perform the method provided by the first aspect.
It is to be understood that for the explanation, the detailed description, the beneficial effects, the examples and the like of the related contents in the device provided in the embodiment of the present invention, reference may be made to the corresponding parts in the method provided in the first aspect, and details are not described here.
In a fourth aspect, the present invention provides a computer-readable medium, on which computer instructions are stored, and when executed by a processor, the computer instructions cause the processor to execute the method provided in the first aspect.
Specifically, a system or an apparatus equipped with a storage medium on which software program codes that realize the functions of any of the above-described embodiments are stored may be provided, and a computer (or a CPU or MPU) of the system or the apparatus is caused to read out and execute the program codes stored in the storage medium.
In this case, the program code itself read from the storage medium can realize the functions of any of the above-described embodiments, and thus the program code and the storage medium storing the program code constitute a part of the present invention.
Examples of the storage medium for supplying the program code include a floppy disk, a hard disk, a magneto-optical disk, an optical disk (e.g., CD-ROM, CD-R, CD-RW, DVD-ROM, DVD-RAM, DVD-RW, DVD + RW), a magnetic tape, a nonvolatile memory card, and a ROM. Alternatively, the program code may be downloaded from a server computer via a communications network.
Further, it should be clear that the functions of any one of the above-described embodiments may be implemented not only by executing the program code read out by the computer, but also by causing an operating system or the like operating on the computer to perform a part or all of the actual operations based on instructions of the program code.
Further, it is to be understood that the program code read out from the storage medium is written to a memory provided in an expansion board inserted into the computer or to a memory provided in an expansion module connected to the computer, and then causes a CPU or the like mounted on the expansion board or the expansion module to perform part or all of the actual operations based on instructions of the program code, thereby realizing the functions of any of the above-described embodiments.
It is to be understood that for the explanation, the detailed description, the beneficial effects, the examples and the like of the contents in the computer-readable medium provided in the embodiment of the present invention, reference may be made to the corresponding parts in the method provided in the first aspect, and details are not described here.
All the embodiments in the present specification are described in a progressive manner, and the same and similar parts among the embodiments are referred to each other, and each embodiment focuses on the differences from other embodiments. In particular, as for the apparatus embodiment, since it is substantially similar to the method embodiment, the description is relatively simple, and for the relevant points, reference may be made to the partial description of the method embodiment.
Those skilled in the art will recognize that the functionality described in this disclosure may be implemented in hardware, software, firmware, or any combination thereof, in one or more of the examples described above. When implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.
The above-mentioned embodiments, objects, technical solutions and advantages of the present invention are further described in detail, it should be understood that the above-mentioned embodiments are only exemplary embodiments of the present invention, and are not intended to limit the scope of the present invention, and any modifications, equivalent substitutions, improvements and the like made on the basis of the technical solutions of the present invention should be included in the scope of the present invention.

Claims (16)

1. A method of determining an installation position of a safety control device, comprising:
acquiring preset size requirement information which meets the safety control requirement of the safety control device; the safety control device comprises at least two shielding sensors, at least two reflectors corresponding to the at least two shielding sensors one to one and at least one safety light curtain device, wherein the preset size requirement information comprises light rays emitted by the shielding sensors, a light curtain net formed by the safety light curtain device and a distance requirement between at least two intersection points formed by the edges of a conveying belt in a conveying system;
acquiring field layout size information after the safety light curtain equipment is installed;
and determining the value ranges of the respective installation positions of the at least two shielding sensors and the at least two reflectors according to the preset size requirement information and the field layout size information.
2. The method according to claim 1, wherein the at least two shielding sensors comprise a first shielding sensor (11) and a second shielding sensor (21), the first shielding sensor (11) and the second shielding sensor (21) are located on one side of a conveyor belt (4) in the conveyor system, a reflector (12) corresponding to the first shielding sensor (11) and a reflector corresponding to the second shielding sensor (21) are located on the other side of the conveyor belt (4) in the conveyor system, the first shielding sensor (11) is located in a first area, and the second shielding sensor (21) is located in a second area; a first light ray and a second light ray are intersected on a central line of the conveyor belt along the movement direction, the first light ray and the second light ray are both intersected with the light curtain net, the first light ray is a light ray between the first shielding sensor (11) and the corresponding reflector (12), and the second light ray is a light ray between the second shielding sensor (21) and the corresponding reflector (22);
the preset size requirement information comprises a value range requirement of a first interval, a value range requirement of a second interval and a value requirement of a third interval; the first distance is a distance between a first intersection point and a second intersection point, the second distance is a distance between the first intersection point and a third intersection point, and the third distance is a distance between the intersection points of the first light ray and the second light ray and the light curtain net respectively; the first intersection point is an intersection point of the first light ray and a first conveyor belt edge (41), the second intersection point is an intersection point of the second light ray and the first conveyor belt edge (41), and the third intersection point is an intersection point of the light curtain net and the first conveyor belt edge (41); the first conveyor belt edge (41) is the edge on the same side as the shielding sensor in the two side edges of the conveyor belt.
3. The method according to claim 2, wherein the site layout size information includes a width of the conveyor belt, a spacing between a first device (31) of the safety light curtain device located on the same side as the shielding sensor and the first conveyor belt edge (41), and a spacing between a second device (32) of the safety light curtain device located on the same side as the reflector and the second conveyor belt edge (42); the first device (31) is one of a light emitter and a light receiver, and the second device (32) is the other of the light emitter and the light receiver; the second conveyor belt edge (42) is the edge of the two side edges of the conveyor belt, which is on the same side as the reflector.
4. The method according to claim 3, wherein the determining a value range of the respective installation positions of the at least two shielding sensors and the at least two reflectors according to the preset size requirement information and the field layout size information includes:
determining a first expression corresponding to the fourth distance according to the proportional relation between the geometric line segments; wherein the first expression includes a width of the conveyor belt, a spacing between the first device (31) and the first conveyor belt edge (41), the third spacing, and the second spacing; the fourth pitch is the distance between the first shielded sensor (11) and the first device (31);
and determining the value range of the fourth interval according to the value range requirement of the second interval, the value requirement of the third interval, the width of the conveyor belt and the interval between the first device (31) and the first conveyor belt edge (41) in the first expression.
5. The method of claim 4, wherein the first expression comprises:
Figure FDA0003671987980000021
in the formula, L 4 At the fourth pitch, W is the width of the belt, L 3 Is the third pitch, L 22 Is the distance, L, between the first device (31) and the first conveyor edge (41) 2 Is the second pitch.
6. The method according to claim 3, wherein the determining a value range of the respective installation positions of the at least two shielding sensors and the at least two reflectors according to the preset size requirement information and the field layout size information includes:
determining a second expression corresponding to the fifth distance according to the proportional relation among the geometric line segments; wherein the second expression includes a width of the conveyor belt, a spacing between the first device (31) and the first conveyor belt edge (41), the third spacing, the first spacing, and the second spacing; the fifth pitch is a distance between the second shield sensor (21) and the first device (31);
and determining the value range of the fifth distance according to the value range requirement of the first distance, the value range requirement of the second distance, the value requirement of the third distance, the width of the conveyor belt and the distance between the first device (31) and the edge (41) of the first conveyor belt in the second expression.
7. The method of claim 6, wherein the second expression comprises:
Figure FDA0003671987980000022
in the formula, L 5 At the fifth pitch, W is the width of the belt, L 3 Is the third pitch, L 22 Is the distance, L, between the first device (31) and the first conveyor edge (41) 2 Is the second pitch, L 1 Is the first pitch.
8. The method according to claim 3, wherein the determining a value range of the respective installation positions of the at least two shielding sensors and the at least two reflectors according to the preset size requirement information and the field layout size information includes:
determining a third expression corresponding to the sixth interval according to the proportional relation between the geometric line segments; wherein the first expression includes a width of the conveyor belt, a spacing between the second device (32) and the second conveyor belt edge (42), the third spacing, and the second spacing; the sixth distance is the distance between the reflector corresponding to the second shielding sensor (21) and the second device (32);
and determining the value range of the sixth distance according to the value range requirement of the second distance, the value requirement of the third distance, the width of the conveyor belt and the distance between the second device (32) and the second conveyor belt edge (42) in the first expression.
9. The method of claim 8, wherein the third expression comprises:
Figure FDA0003671987980000031
in the formula, L 6 At the sixth spacing, W is the width of the belt, L 3 At the third pitch, L 33 Is the spacing, L, between the second device (32) and the second conveyor edge (42) 2 Is the second pitch.
10. The method according to claim 3, wherein the determining a value range of the respective installation positions of the at least two shielding sensors and the at least two reflectors according to the preset size requirement information and the field layout size information includes:
determining a fourth expression corresponding to the seventh interval according to the proportional relation between the geometric line segments; wherein the fourth expression includes the width of the conveyor belt, the spacing between the second device (32) and the second conveyor belt edge (42), the third spacing, the first spacing, and the second spacing; the seventh distance is a distance between the reflector corresponding to the first shielding sensor (11) and the second device (32);
and determining the value range of the seventh distance according to the value range requirement of the first distance, the value range requirement of the second distance, the value requirement of the third distance, the width of the conveyor belt and the distance between the second device (32) and the edge (42) of the second conveyor belt in the fourth expression.
11. The method of claim 10, wherein the fourth expression comprises:
Figure FDA0003671987980000041
in the formula, L 7 At the seventh pitch, W is the width of the belt, L 3 Is the third pitch, L 33 Is a stand forA spacing, L, between the second device (32) and the second conveyor edge (42) 1 Is the first pitch, L 2 Is the second pitch.
12. The method according to claim 3, wherein the determining a value range of the respective installation positions of the at least two shielding sensors and the at least two reflectors according to the preset size requirement information and the field layout size information includes:
determining a fifth expression corresponding to the eighth interval according to the proportional relation among the geometric line segments; wherein the fifth expression includes a width of the conveyor belt, the third pitch, and the second pitch; the eighth interval is a distance from an intersection point of the first light ray and the second light ray to the light curtain net;
and determining the value range of the eighth interval according to the value range requirement of the second interval, the value range requirement of the third interval and the width of the conveyor belt in the fifth expression.
13. The method of claim 12, wherein the fifth expression comprises:
Figure FDA0003671987980000042
in the formula, L 8 At the eighth spacing, W is the width of the belt, L 3 Is the third pitch, L 2 Is the second pitch.
14. An installation position determination device (200) of a safety control device, characterized by comprising:
a first acquisition module (210) for acquiring preset size requirement information meeting the safety control requirement of the safety control device; the safety control device comprises at least two shielding sensors, at least two reflectors and at least one safety light curtain device, wherein the reflectors correspond to the shielding sensors one by one, and the preset size requirement information comprises light rays emitted by the shielding sensors, a light curtain net formed by the safety light curtain device and a distance requirement between at least two intersection points formed by the edges of conveying belts in a conveying system;
a second obtaining module (220) for obtaining the field layout size information after the safety light curtain device is installed;
and the range determining module (230) is used for determining the value ranges of the respective installation positions of the at least two shielding sensors and the at least two reflectors according to the preset size requirement information and the field layout size information.
15. A computing device, the device comprising: at least one memory and at least one processor;
the at least one memory to store a machine readable program;
the at least one processor, configured to invoke the machine readable program, to perform the method of any of claims 1-13.
16. A computer readable medium having stored thereon computer instructions which, when executed by a processor, cause the processor to perform the method of any of claims 1 to 13.
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