CN112714449B - Positioning base station layout optimization method, device and equipment for preventing loss of tools and appliances - Google Patents
Positioning base station layout optimization method, device and equipment for preventing loss of tools and appliances Download PDFInfo
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- CN112714449B CN112714449B CN202011625430.4A CN202011625430A CN112714449B CN 112714449 B CN112714449 B CN 112714449B CN 202011625430 A CN202011625430 A CN 202011625430A CN 112714449 B CN112714449 B CN 112714449B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W16/00—Network planning, e.g. coverage or traffic planning tools; Network deployment, e.g. resource partitioning or cells structures
- H04W16/18—Network planning tools
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
- H04W64/006—Locating users or terminals or network equipment for network management purposes, e.g. mobility management with additional information processing, e.g. for direction or speed determination
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04W—WIRELESS COMMUNICATION NETWORKS
- H04W88/00—Devices specially adapted for wireless communication networks, e.g. terminals, base stations or access point devices
- H04W88/08—Access point devices
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- Y—GENERAL 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
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
Abstract
The invention discloses a positioning base station layout optimization method for preventing loss of a tool, which considers that a worker possibly moves in a positioning area of a positioning network to influence positioning precision and also considers that the positioning coordinate of the tool generates jumping with a certain amplitude when being artificially shielded, so that the situation can be prompted when the jumping error of the positioning coordinate of the tool is judged to exist through the positioning network, and then the optimized positioning precision of the base station layout can be prompted through preset evaluation indexes after the base station layout is changed, thereby being beneficial to improving the positioning precision of the tool and improving the working efficiency of the worker. The invention also discloses a positioning base station layout optimization device and equipment for preventing the loss of the tools, and the positioning base station layout optimization device and equipment have the same beneficial effects as the positioning base station layout optimization method for preventing the loss of the tools.
Description
Technical Field
The invention relates to the field of tool positioning, in particular to a positioning base station layout optimization method for preventing tools from being lost, and further relates to a positioning base station layout optimization device and equipment for preventing tools from being lost.
Background
In the power production, in order to ensure the operation work and safety, various types of tools and instruments need to be used, a method for positioning the tools and instruments in an area through a positioning network exists at present, the environment of the scene where the electric tools and instruments are located is complex, and research can be carried out from optimization of base station layout of the positioning network in order to obtain better positioning precision.
Therefore, how to provide a solution to the above technical problem is a problem that needs to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to provide a positioning base station layout optimization method for preventing loss of tools, which improves the positioning precision of the tools and is beneficial to improving the working efficiency of workers; the invention also aims to provide a positioning base station layout optimizing device and equipment for preventing the loss of the tools, which improve the positioning precision of the tools and are beneficial to improving the working efficiency of workers.
In order to solve the above technical problems, the present invention provides a method for optimizing the layout of a positioning base station to prevent loss of tools, comprising:
judging whether personnel shielding exists in a positioning area of a positioning network through jump errors of the positioning network on positioning coordinates of the tool;
if the person exists, controlling a prompter to prompt that the person is blocked;
when the base station layout of the positioning network is changed, whether the positioning accuracy of the current base station layout of the positioning network is better than the base station layout before the change is evaluated through a preset evaluation index;
if not, controlling the prompter to prompt to change the base station layout again, and executing the step of evaluating whether the positioning accuracy of the current base station layout of the positioning network is better than the base station layout before changing or not through a preset evaluation index when the base station layout of the positioning network is changed;
if so, ending the process.
Preferably, the step of judging whether there is a person occlusion in the positioning area of the positioning network by using a jump error of the positioning network for the positioning coordinate of the tool is specifically:
determining a personnel shielding judgment index according to the jump error of each tool in a positioning area of a positioning network in a first preset period, the first preset period, a second preset period and the total number of the tools in the positioning area in the past;
judging whether the personnel shielding judgment index is larger than a preset threshold value or not;
if yes, judging that personnel shielding exists in a positioning area of the positioning network;
wherein, personnel shelter from judging the index specifically to be:
wherein T is n × T, 0 ≦ px≤n(n∈N*)；
Wherein p isxFor the xth tool in the last first preset periodAnd the number of times of being shielded by personnel is T, a first preset period, l is the total number of the tools and the instruments, T is a second preset period, and if a jump error larger than a preset threshold value exists in any second preset period, the number of times of being shielded by personnel of the corresponding tool and the instrument is added by one.
Preferably, the preset threshold is an error evaluation dynamic threshold which is set in advance according to the influence parameters of the human obstacle on the positioning process of the positioning network.
Preferably, the error evaluation dynamic threshold is:
wherein epsilonnlosAtt, an equivalent factor of the dielectric constant associated with human occlusionnlosIs an equivalent factor of the attenuation constant associated with the occlusion of a person, L is the number of multipaths, amIs the amplitude of the mth multipath, taumTime of arrival TOA, a for mth multipathDPFor displaying the amplitude of the interface DP signal, τDPTOA for DP signal.
Preferably, before the base station layout of the positioning network is changed and the positioning accuracy of the current base station layout of the positioning network is evaluated to be better than the base station layout before the change through a preset evaluation index, the method for optimizing the positioning base station layout for preventing the loss of the tool further includes:
based on the historical positioning data of each tool and instrument of the positioning network, determining the historical track data of each tool and instrument in the positioning area of the positioning network through a navigation system of a preset type;
and controlling a display to display the historical track data after visualization processing.
Preferably, the preset type of navigation system is an inertial navigation system.
Preferably, the positioning network is an ultra-wideband UWB positioning network.
Preferably, the preset evaluation index is a precision factor DOP value.
In order to solve the above technical problem, the present invention further provides a positioning base station layout optimization apparatus for preventing loss of tools, including:
the first judgment module is used for judging whether personnel shielding exists in a positioning area of a positioning network through the jump error of the positioning network on the positioning coordinate of the tool, and if the personnel shielding exists in the positioning area of the positioning network, the first control module is triggered;
the first control module is used for controlling the prompter to prompt that personnel occlusion exists;
the second judgment module is used for evaluating whether the positioning accuracy of the current base station layout of the positioning network is better than the base station layout before the change or not through a preset evaluation index when the base station layout of the positioning network is changed, if not, the second control module is triggered, and if so, the ending module is triggered;
the second control module is used for controlling the prompter to prompt to change the base station layout again and executing the step of evaluating whether the positioning accuracy of the current base station layout of the positioning network is better than the base station layout before changing or not through a preset evaluation index when the base station layout of the positioning network is changed;
and the ending module is used for ending.
In order to solve the above technical problem, the present invention further provides a positioning base station layout optimization apparatus for preventing a tool from being lost, including:
a memory for storing a computer program;
and the processor is used for realizing the steps of the positioning base station layout optimization method for preventing the loss of the tool when executing the computer program.
The invention provides a positioning base station layout optimization method for preventing loss of a tool, which considers that a worker possibly moves in a positioning area of a positioning network to influence positioning precision and also considers that the positioning coordinate of the tool generates jumping with a certain amplitude when being artificially shielded, so that the method can prompt the situation when the jumping error of the positioning coordinate of the tool is judged to exist through the positioning network, and can ensure that the positioning precision of the optimized base station layout is improved through preset evaluation indexes after the base station layout is changed, thereby improving the positioning precision of the tool and being beneficial to the improvement of the working efficiency of the worker.
The invention also provides a positioning base station layout optimization device and equipment for preventing the loss of the tools, and the positioning base station layout optimization device and equipment have the same beneficial effects as the positioning base station layout optimization method for preventing the loss of the tools.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed in the prior art and the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.
Fig. 1 is a schematic flow chart of a positioning base station layout optimization method for preventing loss of a tool and an apparatus according to the present invention;
fig. 2 is a schematic structural diagram of a positioning base station layout optimizing device for preventing a tool from being lost according to the present invention;
fig. 3 is a schematic structural diagram of a positioning base station layout optimization device for preventing a tool from being lost.
Detailed Description
The core of the invention is to provide a positioning base station layout optimization method for preventing loss of tools, which improves the positioning precision of the tools and is beneficial to improving the working efficiency of workers; the other core of the invention is to provide a positioning base station layout optimization device and equipment for preventing the loss of the tools, which improve the positioning precision of the tools and are also beneficial to improving the working efficiency of workers.
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in 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 obvious that the described embodiments are some, but not all, embodiments of the present invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, fig. 1 is a schematic flow chart of a positioning base station layout optimization method for preventing a tool from being lost, where the positioning base station layout optimization method for preventing a tool from being lost further includes:
step S1: judging whether personnel shielding exists in a positioning area of the positioning network through the jump error of the positioning network to the positioning coordinate of the tool;
specifically, considering that a worker may move in a positioning area of the positioning network to affect positioning accuracy, and considering that a positioning coordinate of the tool and the fixture may jump in a certain range when being blocked by a person, the method and the device first assume that the worker is prompted when the worker blocks the positioning coordinate of the tool and the fixture through a jump error of the positioning network, so that the worker actively adjusts a base station layout of the positioning network under the situation, and therefore, in the step, whether the worker blocks the positioning coordinate of the tool and the fixture through the jump error of the positioning network is judged, so that a subsequent corresponding control action is triggered through a judgment result.
The jump refers to the instant jump of the positioning coordinate of the tool due to the personnel shielding (theoretically, only the personnel shielding exists), that is, the jump suddenly occurs at a certain moment and then returns to normal, and the jump error refers to the difference between the positioning coordinate during the jump and the stable positioning coordinate before and after the jump.
Wherein, the jump error can be expressed by the following formula:
wherein e is the jump error, and (x, y) are the steady-state positioning coordinates,
location coordinates for the mutation.
Step S2: if the person exists, controlling a prompter to prompt that the person is blocked;
specifically, under the condition that the personnel shelter in the positioning area is judged, the prompting device can be controlled to prompt that the personnel shelter exists, and after the personnel shelter exists, a worker knows that the positioning accuracy of the positioning network is affected, so that the worker can actively know the situation and adjust the base station layout of the positioning network under the situation.
The prompt may be of various types, for example, a voice prompt, a display, or the like, and the embodiments of the present invention are not limited herein.
Step S3: when the base station layout of the positioning network is changed, whether the positioning accuracy of the current base station layout of the positioning network is better than the base station layout before the change is evaluated through a preset evaluation index;
specifically, due to the prompt in the foregoing steps, the staff may autonomously adjust the layout of the base station according to the actual situation, but such adjustments are merely base station placement adjustments based on manual analysis and experience, and not a hundred percent confidence can improve the positioning accuracy of the positioning network, in order to ensure that the positioning accuracy of the positioning network is improved, the method estimates whether the positioning accuracy of the current base station layout of the positioning network is better than that of the base station layout before the change through a preset evaluation index, so as to trigger different subsequent control actions according to the result and finally enable the positioning network to achieve the effect of improving the positioning precision, when the base station layout of the positioning network is changed, whether the positioning accuracy of the current base station layout of the positioning network is better than that of the base station layout before the change can be evaluated through the preset evaluation index.
Step S4: if not, controlling the prompter to prompt to change the base station layout again, and executing the step of evaluating whether the positioning accuracy of the current base station layout of the positioning network is better than the base station layout before the change through a preset evaluation index when the base station layout of the positioning network is changed;
specifically, when the positioning accuracy of the current base station layout is not better than the base station layout before the change, the positioning accuracy is not improved by representing the change of the base station layout at this time, but may be reduced, so that the prompt of "changing the base station layout again" can be given through the prompter, so as to ensure that the positioning network can finally obtain the improvement of the positioning accuracy, and after the prompt, a worker can autonomously change the base station layout.
Specifically, the regular hexagon is often used in the conventional cellular network, which has the advantages that the maximum area can be covered by using the minimum number of nodes, and the maximum coverage can be achieved by using the smaller number of base stations. With fewer obstructions, the hexagonal base station layout can achieve greater coverage of tool positioning in this area. Under the condition that the number of the shielding objects is large, signal transmission is not needed at some positions, and if the regular hexagon is used, the shielding objects can interfere the transmission of base station signals. Therefore, in a region with more complex actual shelters and instruments, the regular pentagonal base station layout needs to be considered, the arrangement can avoid the shelters, signals can not pass through as far as possible, and interference on base station channel transmission is reduced. However, the regular pentagonal layout also has the defects that overlapping and blind areas may exist, so that the integrity of the network cannot be well guaranteed. In the middle of the more region of multiplexer utensil kind, quantity, and have the condition of sheltering from, want to compromise regular hexagon and regular pentagon's characteristics, obtain the location demand fast, can adopt regular heptagon basic station layout mode for can guarantee the interference killing feature of basic station transmission signal relatively, also can the area of bigger coverage area.
Step S5: if so, ending the process.
Specifically, when the positioning accuracy of the current base station layout is better than the base station layout before the change, the positioning accuracy of the positioning network is improved by representing the change of the base station layout, the purpose of adjusting the base station layout is achieved, and the process is finished at this moment.
Certainly, in order to facilitate the staff to clearly know that the positioning accuracy is improved and the base station layout does not need to be changed, the prompter can be controlled to prompt that the positioning base station layout optimization for preventing the loss of the tool is successful.
The invention provides a positioning base station layout optimization method for preventing loss of a tool, which considers that a worker possibly moves in a positioning area of a positioning network to influence positioning precision and also considers that the positioning coordinate of the tool generates jumping with a certain amplitude when being artificially shielded, so that the method can prompt the situation when the jumping error of the positioning coordinate of the tool is judged to exist through the positioning network, and can ensure that the positioning precision of the optimized base station layout is improved through preset evaluation indexes after the base station layout is changed, thereby improving the positioning precision of the tool and being beneficial to the improvement of the working efficiency of the worker.
On the basis of the above-described embodiment:
as a preferred embodiment, the step of judging whether a person occlusion exists in a positioning area of a positioning network by using a jump error of the positioning network to a positioning coordinate of a tool is specifically:
determining personnel shielding judgment indexes according to the jump error of each tool in a positioning area of a positioning network in a first preset period, the first preset period, a second preset period and the total number of the tools in the positioning area in the past;
judging whether the personnel shielding judgment index is larger than a preset threshold value or not;
if yes, judging that personnel shielding exists in a positioning area of the positioning network;
wherein, personnel shelter from judging the index specifically to be:
wherein T is n × T, 0 ≦ px≤n(n∈N*)；
Wherein p isxAnd if a jump error larger than a preset threshold value exists in any second preset period, adding one to the number of times of the corresponding tool sheltered by the personnel.
Specifically, under considering some scenes, personnel in the positioning area shelter from being unavoidable completely, and can judge whether to need to carry out optimization of base station layout through the frequency degree of sheltering from under this condition, therefore the personnel shelter from judging the index and rather than the predetermined threshold value that corresponds in this application, only when personnel shelter from judging the index and be greater than the predetermined threshold value, just can judge that there is personnel to shelter from and carry out subsequent step, personnel who has tolerated the low frequency shelter from on the one hand, on the other hand can in time optimize the base station layout under the condition that the frequency that personnel sheltered from exceeds a definite value.
Based on the above staff occlusion determination index, the embodiment of the present invention is a specific implementation scheme to illustrate more pictorially that, assuming that the first preset period is 10 hours of the work of the positioning network in one day, and the second preset period is 10 minutes, that is, a jump error greater than a preset threshold exists in any 10 minutes, the "number of times of being occluded by staff" of the tool and the "jump error greater than the preset threshold" exist is accumulated by one, and the total number of tools and appliances existing in the positioning area is 100, so that the theoretical maximum accumulated value of the "number of times of being occluded by staff" of all tools and appliances in the work time of 10 hours in the day is one
Specifically, assuming that the preset threshold is 1000, p is only required to be within 10 hours of one-day operation of the positioning network1+p2+...+plHas a value ofIf the number exceeds 1000, the base station layout does not need to be adjusted, if the number exceeds 1000, the positioning network positioning area frequently generates personnel interference, and at the moment, a prompter can prompt that personnel shielding exists.
Specifically, the scheme in the embodiment of the present invention may be executed in a cycle according to a first preset period, so that whether the person is blocked in the positioning area can be continuously determined.
Of course, in addition to the determination scheme in the present application, "determining whether there is a person occlusion in the positioning area of the positioning network by using the jump error of the positioning network with respect to the positioning coordinate of the tool" may also be other specific schemes, and the embodiment of the present invention is not limited herein.
As a preferred embodiment, the first preset threshold is an error evaluation dynamic threshold which is preset according to an influence parameter of the human obstacle on the positioning process of the positioning network.
As a preferred embodiment, the error evaluation dynamic threshold is:
wherein epsilonnlosAtt, an equivalent factor of the dielectric constant associated with human occlusionnlosIs an equivalent factor of the attenuation constant associated with the occlusion of a person, L is the number of multipaths, amIs the amplitude of the mth multipath, taumTOA (Time Of Arrival), a, for the mth multipathDPAmplitude of DP (display interface) signal, τDPTOA for DP signal.
Specifically, according to the error evaluation dynamic threshold, the different influence degrees of the personnel obstacles on the positioning process of the positioning network under different conditions can be accurately represented, so that the jump error can be more accurately evaluated to determine whether personnel shelter exists.
Of course, the error evaluation dynamic threshold may be in other specific forms besides the above-mentioned specific form of the error evaluation action threshold, and the embodiment of the present invention is not limited herein.
As a preferred embodiment, when the base station layout of the positioning network is changed, before evaluating whether the positioning accuracy of the current base station layout of the positioning network is better than the base station layout before the change according to a preset evaluation index, the method for optimizing the positioning base station layout for preventing the loss of the tool further includes:
based on the positioning data of the positioning network for the history of each tool, acquiring the history track data of each tool in the positioning area of the positioning network through a navigation system of a preset type;
and controlling a display to display the historical track data after visualization processing.
Specifically, considering that once the layout of the base station is determined, the positioning area corresponding to the positioning network is also determined, in such a case, the worker can only obtain the positioning data of each tool, but does not know whether the coverage area of the current positioning area is suitable for the coverage area of the tool when the tool is moved for use, so in the present application, based on the historical positioning data of the positioning network for each tool, the historical trajectory data of each tool in the positioning area of the positioning network is obtained through a navigation system of a preset type, and then the display is controlled to display the historical trajectory data after visualization processing, so that the worker can know the coverage area of the tool when the tool is moved for use, analyze whether the layout of the current base station is reasonable in combination with the known coverage area of the positioning network, and can actively adjust the layout of the base station when the layout is unreasonable, the method is favorable for improving the rationality and the positioning precision of the positioning area of the positioning network.
The display may be of various types, for example, a computer display, and the like, and the embodiment of the present invention is not limited herein.
Specifically, in practical application, the used tools can be classified and labeled firstly, historical positioning data of the tools can be obtained by sampling the tools and the moving process of the tools, the historical positioning data comprises positions, time, moving speed and the like, trajectory data can be generated according to the sequence of sampling points of the tools and the preset navigation system, and the trajectory data is displayed through a display after being subjected to visualization processing.
In addition, the use times and the frequent and non-frequent positions of the tools in the positioning area in the counting period can be counted, and the visualized use times and frequent and non-frequent positions are displayed through the display, so that the staff can perform unified analysis according to the data and adjust the layout of the base station if necessary.
As a preferred embodiment, the navigation system of the preset type is an inertial navigation system.
Specifically, the inertial navigation system has the advantages of high processing speed, high stability and the like.
Of course, besides the inertial navigation system, the preset type navigation system may also be of other various types, and the embodiment of the present invention is not limited herein.
As a preferred embodiment, the positioning network is an UWB (Ultra Wide Band) positioning network.
Specifically, the UWB positioning network has the advantages of low cost, high accuracy, high stability, and the like.
Of course, besides the UWB positioning network, the positioning network may be of other various types, and the embodiment of the present invention is not limited herein.
As a preferred embodiment, the preset evaluation index is a DOP (Dilution Of Precision) value.
Specifically, the DOP may specifically include HDOP (Horizontal resolution Of Precision) and PDOP (Position resolution Of Precision), and the corresponding thresholds may be FHDOPAnd FPDOPUnder the same condition, the lower the DOP value of the base station layout, the higher the positioning accuracy corresponding to the base station layout.
Specifically, when the positioning network is applied for the first time, whether the base station layout to be used is reliable can be determined by determining whether both the HDOP and the PDOP of the base station layout to be used are smaller than the corresponding threshold, and only if both the HDOP and the PDOP are smaller than the corresponding threshold, the base station layout can be considered to be reliable and can be applied, and certainly, the DOP value can also be used for evaluating the positioning accuracy of the base station layout before and after the change.
Referring to fig. 2, fig. 2 is a schematic structural diagram of a positioning base station layout optimization device for preventing a tool from being lost, where the positioning base station layout optimization device for preventing a tool from being lost includes:
the first judging module 1 is used for judging whether personnel shielding exists in a positioning area of a positioning network through a jump error of the positioning network to a positioning coordinate of a tool, and if the personnel shielding exists, the first control module 2 is triggered;
the first control module 2 is used for controlling the prompter to prompt that personnel occlusion exists;
the second judgment module 3 is used for evaluating whether the positioning accuracy of the current base station layout of the positioning network is better than the base station layout before the change or not through a preset evaluation index when the base station layout of the positioning network is changed, if not, triggering the second control module 4, and if so, triggering the ending module 5;
the second control module 4 is used for controlling the prompter to prompt the base station layout to be changed again, and executing the step of evaluating whether the positioning accuracy of the current base station layout of the positioning network is better than the base station layout before the change or not through a preset evaluation index when the base station layout of the positioning network is changed;
and an ending module 5 for ending.
For the introduction of the positioning base station layout optimization device for preventing the loss of the tool and the equipment provided by the embodiment of the present invention, please refer to the embodiment of the positioning base station layout optimization method for preventing the loss of the tool and the equipment, which is not described herein again.
Referring to fig. 3, fig. 3 is a schematic structural diagram of a positioning base station layout optimization device for preventing a tool from being lost, where the positioning base station layout optimization device for preventing a tool from being lost includes:
a memory 6 for storing a computer program;
and a processor 7, configured to implement the steps of the positioning base station layout optimization method for preventing loss of the tool in the foregoing embodiments when executing the computer program.
For the introduction of the positioning base station layout optimization device for preventing the loss of the tool and the equipment provided by the embodiment of the present invention, please refer to the embodiment of the positioning base station layout optimization method for preventing the loss of the tool and the equipment, which is not described herein again.
The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other. The device disclosed by the embodiment corresponds to the method disclosed by the embodiment, so that the description is simple, and the relevant points can be referred to the method part for description. It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising an … …" does not exclude the presence of other identical elements in a process, method, article, or apparatus that comprises the element.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (10)
1. A positioning base station layout optimization method for preventing loss of tools and appliances is characterized by comprising the following steps:
judging whether personnel shielding exists in a positioning area of a positioning network through jump errors of the positioning network on positioning coordinates of the tool;
if the person exists, controlling a prompter to prompt that the person is blocked;
when the base station layout of the positioning network is changed, evaluating whether the positioning accuracy of the current base station layout of the positioning network is better than the base station layout before the change or not through a preset evaluation index;
if not, controlling the prompter to prompt to change the base station layout again, and executing the step of evaluating whether the positioning accuracy of the current base station layout of the positioning network is better than the base station layout before changing or not through a preset evaluation index when the base station layout of the positioning network is changed;
if so, ending the process.
2. The method for optimizing the layout of the positioning base station for preventing the loss of the tool according to claim 1, wherein the step of determining whether the personnel shielding exists in the positioning area of the positioning network through the jump error of the positioning network to the positioning coordinate of the tool is specifically:
determining a personnel shielding judgment index according to the jump error of each tool in a positioning area of a positioning network in a first preset period, the first preset period, a second preset period and the total number of the tools in the positioning area in the past;
judging whether the personnel shielding judgment index is larger than a preset threshold value or not;
if yes, judging that personnel shielding exists in a positioning area of the positioning network;
wherein, personnel shelter from judging the index specifically to be:
wherein T is n × T, 0 ≦ px≤n(n∈N*)；
Wherein p isxThe method includes the steps that the number of times that an x-th tool is shielded by personnel in a last first preset period is determined, T is the first preset period, l is the total number of the tools and the T is a second preset period, and if a jump error larger than a preset threshold value exists in any second preset period, the number of times that the corresponding tool is shielded by the personnel is added up by one.
3. The method as claimed in claim 2, wherein the preset threshold is an error evaluation dynamic threshold preset according to parameters affecting the positioning process of the positioning network by the obstacle.
4. The method for optimizing the layout of the positioning base station for preventing the loss of the tool according to claim 3, wherein the error evaluation dynamic threshold is:
wherein epsilonnlosAtt, an equivalent factor of the dielectric constant associated with human occlusionnlosIs an equivalent factor of the attenuation constant associated with the occlusion of a person, L is the number of multipaths, amIs the amplitude of the mth multipath, taumTime of arrival TOA, a for mth multipathDPFor displaying the amplitude of the interface DP signal, τDPTOA for DP signal.
5. The method as claimed in claim 1, wherein when the base station layout of the positioning network is changed, before evaluating whether the positioning accuracy of the current base station layout of the positioning network is better than the base station layout before the change according to a preset evaluation index, the method further comprises:
based on the historical positioning data of each tool and instrument of the positioning network, determining the historical track data of each tool and instrument in the positioning area of the positioning network through a navigation system of a preset type;
and controlling a display to display the historical track data after visualization processing.
6. The method as claimed in claim 5, wherein the navigation system of the predetermined type is an inertial navigation system.
7. The method as claimed in claim 1, wherein the positioning network is an ultra wideband UWB positioning network.
8. The method as claimed in any one of claims 1 to 7, wherein the predetermined evaluation index is a DOP value.
9. A prevent location base station overall arrangement optimizing apparatus of multiplexer utensil loss, its characterized in that includes:
the first judgment module is used for judging whether personnel shielding exists in a positioning area of a positioning network through the jump error of the positioning network on the positioning coordinate of the tool, and if the personnel shielding exists in the positioning area of the positioning network, the first control module is triggered;
the first control module is used for controlling the prompter to prompt that personnel occlusion exists;
the second judging module is used for evaluating whether the positioning accuracy of the current base station layout of the positioning network is better than the base station layout before the change or not through a preset evaluation index when the base station layout of the positioning network is changed, if not, the second control module is triggered, and if so, the ending module is triggered;
the second control module is used for controlling the prompter to prompt to change the base station layout again and executing the step of evaluating whether the positioning accuracy of the current base station layout of the positioning network is better than the base station layout before changing or not through a preset evaluation index when the base station layout of the positioning network is changed;
and the ending module is used for ending.
10. The utility model provides a prevent location base station overall arrangement optimizing apparatus of multiplexer utensil loss which characterized in that includes:
a memory for storing a computer program;
a processor for implementing the steps of the method for optimizing the layout of a positioning base station for preventing the loss of a tool according to any one of claims 1 to 8 when executing the computer program.
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