CN110824278A - Stereo map construction equipment for on-line analysis of electronic equipment performance and application method - Google Patents
Stereo map construction equipment for on-line analysis of electronic equipment performance and application method Download PDFInfo
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- CN110824278A CN110824278A CN201911116774.XA CN201911116774A CN110824278A CN 110824278 A CN110824278 A CN 110824278A CN 201911116774 A CN201911116774 A CN 201911116774A CN 110824278 A CN110824278 A CN 110824278A
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- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
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Abstract
The invention discloses a stereo atlas device for analyzing the performance of electronic equipment, which comprises: the workbench is provided with at least one corresponding infrared thermal imaging camera in at least three directions of an X axis, a Y axis and a Z axis respectively; the computer terminal is in communication connection with each infrared thermal imaging camera; wherein, each infrared thermal imaging appearance of making a video recording respectively through can follow the flexible coupling assembling of predetermined direction, and then sets up on the workstation. The invention provides a stereo-map device for analyzing the performance of electronic equipment, which can perform infrared imaging on the electronic equipment in three axial directions through a telescopic infrared thermal imaging camera, and can judge the use efficiency and the service life of the electronic equipment by combining the heating condition of each part when the electronic equipment is in a working condition and the color brightness of each part when the electronic equipment is in infrared stereo imaging so as to prevent faults and have the effect of high pre-judgment accuracy. The invention also provides a method for applying the stereo atlas equipment.
Description
Technical Field
The invention relates to a detector used in the condition of detecting the service life of used equipment. More particularly, the invention relates to a stereo map construction device for on-line analysis of electronic device performance used in situations of life prediction and failure prediction of electronic devices including high-voltage, microwave, optical, thermal and other power devices, and an application method thereof.
Background
The existing high-voltage, microwave, optical, thermal and other power device electronic equipment is very necessary because the service life of each part of the equipment cannot be detected when the equipment is applied, so that the conditions of component failure, electronic equipment failure and the like often occur in use, and the equipment is usually high in price, and most companies cannot prepare corresponding standby machines in use, so that the service condition of the equipment is detected regularly to ensure that the equipment can be always in a stable working condition when in use.
In the prior art, electronic equipment is almost detected by separating the electronic equipment for naked eyes or detecting the electronic equipment by independently connecting the electronic equipment with a tester, and the methods cannot realize accurate evaluation on functional components of the electronic equipment.
In addition, the infrared imaging of the equipment is detected by an infrared camera, but the detection effect can only be two-dimensional imaging, and the equipment cannot be three-dimensional detected, so the detection precision is low, and the missing judgment and the misjudgment are easy to occur.
Disclosure of Invention
An object of the present invention is to solve at least the above problems and/or disadvantages and to provide at least the advantages described hereinafter.
The invention also aims to provide a stereo-map device for analyzing the performance of electronic equipment, which can carry out infrared imaging on the electronic equipment in three axial directions through a telescopic infrared thermal imaging camera, and can judge the use efficiency and the service life of the electronic equipment by combining the heating condition of each part when the electronic equipment is in a working condition and the color brightness of each part when the electronic equipment is in infrared stereo imaging so as to prevent faults and have the effect of high prejudgment accuracy.
The invention also aims to provide a method for applying the three-dimensional map equipment, which realizes three-dimensional infrared phase taking of the electronic equipment through an infrared thermal imaging camera, constructs the three-dimensional map through related three-dimensional map construction software, considers and corrects factors of the electronic equipment by introducing background temperature, further realizes service life prediction and fault prevention of the electronic equipment, and has higher precision and better stability.
To achieve these objects and other advantages in accordance with the purpose of the invention, there is provided a stereo atlas apparatus for analyzing performance of an electronic apparatus, comprising:
the workbench is provided with at least one corresponding infrared thermal imaging camera in at least three directions of an X axis, a Y axis and a Z axis respectively;
the computer terminal is in communication connection with each infrared thermal imaging camera;
wherein, each infrared thermal imaging appearance of making a video recording respectively through can follow the flexible coupling assembling of predetermined direction, and then sets up on the workstation.
Preferably, the workbench is configured to be an L-shaped or three-sided enclosure structure, and a temperature sensor in communication connection with a computer terminal is further disposed on the workbench.
Preferably, the connecting assembly is configured as a screw structure for cooperating with an infrared thermal imaging camera.
Preferably, wherein the connection assembly is configured to include: the device comprises a T-shaped supporting piece matched with an infrared thermal imaging camera and a first guide rail which is arranged on a workbench and matched with an upper sliding block of the T-shaped supporting piece;
the connecting piece of the infrared thermal imaging camera is further arranged on the T-shaped supporting piece through an elastic element matched with the connecting piece;
and power mechanisms are respectively arranged at two ends of the T-shaped supporting piece, and power output ends of the power mechanisms are respectively connected with two end parts of the T-shaped supporting piece through common connecting wires.
A method of applying the stereogram apparatus, comprising:
the method comprises the following steps that firstly, a computer terminal acquires three-dimensional thermal imaging image information of electronic equipment in a working state through an infrared thermal imaging camera on three axes;
secondly, the computer terminal constructs a heating area three-dimensional map for internal components of the electronic equipment through three-dimensional map construction software based on the acquired three-dimensional thermal imaging image information;
thirdly, the computer terminal adopts the background temperature value of the electronic equipment through a temperature sensor, and the three-dimensional map construction software carries out factor correction on the heating area three-dimensional map of the working state of the electronic equipment based on the acquired temperature data;
and step four, the three-dimensional map building software pre-judges the service life of the internal components of the electronic equipment based on the heating area three-dimensional map after factor correction.
Preferably, in the second step, the method further comprises:
the three-dimensional map building software is internally pre-stored with a three-dimensional stereogram of electronic equipment with rotatable dimensions;
the three-dimensional map construction software analyzes and calculates the edge angle of the three-dimensional thermal imaging image information according to the acquired three-dimensional thermal imaging image information so as to obtain the relevant position information of the electronic equipment;
the three-dimensional map construction software performs dimension rotation on the three-dimensional map of the electronic equipment through the position information so as to enable the three-dimensional map to be basically overlapped with the heating area three-dimensional map;
the three-dimensional map construction software calls marking information of each component in the three-dimensional stereogram of the electronic equipment and marks the corresponding part by adopting the related marking information.
Preferably, in the second step, the three-dimensional map building software performs block division based on the marks and RGB values in the heat-generating region stereo map and on differences of color blocks of adjacent regions in the three-dimensional map.
Preferably, in the third step, the three-dimensional map building software compares the acquired background temperature of the electronic device with a corresponding first threshold value pre-stored in the software, and if the background temperature exceeds the first threshold value range, the three-dimensional map building software down-regulates the proportion of the RGB values of the colors of the blocks in the three-dimensional map of the heat generation area;
if the color of each block in the three-dimensional map of the heating area just falls into the first threshold range, the color of each block in the three-dimensional map of the heating area is not operated;
if the color is lower than the first threshold range, the RGB value of each block color in the three-dimensional map of the heating area is proportionally adjusted upwards;
wherein the background temperature includes the temperature of the stage itself and the operating temperature of the surface of the electronic device when the electronic device is operating.
Preferably, in the fourth step, a second threshold for pre-determining the service life of the electronic device is pre-stored in the three-dimensional map building software, and the three-dimensional map building software compares the RGB value of the color of each block with the second threshold, and if the RGB value exceeds the range of the second threshold, determines that the service life of the block is short;
if the current block falls into the range of the second threshold, judging that the use of the block is in a normal condition;
if the range is lower than the second threshold value, the block is judged to be in a more excellent working condition.
The invention at least comprises the following beneficial effects: firstly, the invention can carry out infrared imaging on the electronic equipment in three axial directions through the telescopic infrared thermal imaging camera, judge the use efficiency and the service life of each part when the electronic equipment is in a working condition through a thermal imaging technology and combine the color brightness of each part during infrared three-dimensional imaging so as to prevent faults and has the effect of high pre-judgment accuracy.
Secondly, the invention realizes three-dimensional infrared phase taking of the electronic equipment through an infrared thermal imaging camera by a method of applying the three-dimensional map equipment, constructs the three-dimensional map through related three-dimensional map construction software, and simultaneously introduces the background temperature to factor consideration and correction of the three-dimensional map, thereby realizing service life prediction and fault prevention of the electronic equipment, and having higher precision and better stability.
Thirdly, the electronic equipment three-dimensional stereogram with rotatable dimensionality related to the electronic equipment is prestored in the three-dimensional map construction software, and then the three-dimensional stereogram of the electronic equipment is matched with the three-dimensional imaging map in angle through analysis and comparison of the three-dimensional imaging map so as to obtain the mark of each component, so that the functional judgment of each component is realized.
Additional advantages, objects, and features of the invention will be set forth in part in the description which follows and in part will become apparent to those having ordinary skill in the art upon examination of the following or may be learned from practice of the invention.
Drawings
FIG. 1 is a schematic diagram of a stereogram apparatus for analyzing the performance of an electronic device in accordance with an embodiment of the present invention;
fig. 2 is a schematic structural diagram of a connecting assembly according to an embodiment of the present invention.
Detailed Description
The present invention is further described in detail below with reference to the attached drawings so that those skilled in the art can implement the invention by referring to the description.
It will be understood that terms such as "having," "including," and "comprising," as used herein, do not preclude the presence or addition of one or more other elements or groups thereof.
Fig. 1 shows an implementation form of a stereo atlas apparatus for analyzing performance of an electronic apparatus according to the present invention, which includes:
the workbench 1 is provided with at least one corresponding infrared thermal imaging camera 2 in at least three directions of an X axis, a Y axis and a Z axis, and is used for performing infrared imaging on three dimensions of the electronic equipment 3 so as to realize performance prejudgment on the three dimensions;
the computer terminal 4 is in communication connection with each infrared thermal imaging camera and is used for acquiring thermal imaging image information acquired by the infrared thermal imaging camera;
the infrared thermal imaging camera is arranged on the workbench through the connecting component 5 which can stretch in the preset direction, so that the infrared thermal imaging camera can adapt to the detection requirements of electronic equipment with different sizes, heights and specifications. The computer terminal is used for carrying out infrared imaging on the equipment and displaying the infrared imaging on the equipment, and the prior art is adopted, so that the scheme is adopted for carrying out three-dimensional imaging on the electronic equipment, and carrying out prejudgment on the service life and fault prejudgment on the service life of the electronic equipment through an imaging picture, and the method has the advantages of good implementable effect, strong operability, good adaptability and strong stability. Also, this manner is merely an illustration of a preferred example, but not limited thereto. When the invention is implemented, appropriate replacement and/or modification can be carried out according to the requirements of users.
In another example, as shown in fig. 1, the workbench is configured to be an L-shaped or three-sided enclosure structure, which has a simple structure, so that the workbench has a wide space to meet the use requirements of electronic equipment detection with different specifications, and a temperature sensor in communication connection with a computer terminal is further arranged on the workbench, and is used for acquiring the ambient temperature of the electronic equipment during detection and the temperature of the electronic equipment itself, so as to provide relevant factor consideration for later detection prediction, so that the precision judgment is more reliable. The scheme has the advantages of good implementation, good adaptability and controllable precision. And, this manner is merely an illustration of a preferred example, but not limited thereto. When the invention is implemented, appropriate replacement and/or modification can be carried out according to the requirements of users.
In another example, the connection assembly is configured as a lead screw structure that cooperates with an infrared thermal imaging camera. The technical scheme is adopted to realize the structural design of the screw rod mechanism, the structure is simple, meanwhile, the automatic control of the extension and retraction of the screw rod mechanism can be realized through the motor matched with the screw rod mechanism, in addition, corresponding sensors can be respectively configured at the infrared thermal imaging camera end, when the infrared thermal imaging camera runs to preset distance with the electronic equipment, the extension and retraction can be automatically stopped, so that the infrared thermal imaging camera adapts to the detection and use requirements of the electronic equipment with different specifications, and the infrared thermal imaging camera has the advantages of good implementation effect, strong operability and good adaptability. Also, this manner is merely an illustration of a preferred example, but not limited thereto. When the invention is implemented, appropriate replacement and/or modification can be carried out according to the requirements of users.
As shown in fig. 2, in another example, the connection assembly is configured to include: the T-shaped support part 6 is matched with the infrared thermal imaging camera, the upright part of the T-shaped support part can be arranged into a screw rod structure as required so as to be capable of stretching to a required position as required, and the T-shaped support part is used for supporting and positioning the infrared thermal imaging camera, and the first guide rail 7 is arranged on the workbench and matched with an upper sliding block of the T-shaped support part and used for enabling the infrared thermal imaging camera to move in the extension directions of three dimensions as required so as to adapt to the detection requirements of electronic equipment with different specifications;
the connecting piece 8 of the infrared thermal imaging camera is further arranged on the T-shaped supporting piece through an elastic element 9 matched with the connecting piece, and the infrared thermal imaging camera can have a certain deflection angle through the elastic element such as a spring or spring steel with preset rigidity;
the two ends of the T-shaped supporting piece are respectively provided with a power mechanism 10, the power output ends of the power mechanisms are respectively connected with the two end parts of the T-shaped supporting piece through a common connecting wire 11, the power output ends of the power mechanisms are used for enabling the infrared thermal imaging camera to be in a relatively stable working condition through tensioning of the connecting wire, and meanwhile, the power mechanisms can move in a fan-shaped interval in a large range through mutual matching action of the power mechanisms so as to meet imaging requirements and imaging precision of electronic equipment with different specifications or form dynamic scanning image information to meet imaging requirements of large blocks and high precision. The scheme has the advantages of good adaptability and strong stability. Also, this manner is merely an illustration of a preferred example, but not limited thereto. In implementing the present invention, appropriate substitutions and/or modifications may be made according to user requirements.
A method of applying the stereogram apparatus, comprising:
the method comprises the following steps that firstly, a computer terminal acquires three-dimensional thermal imaging image information of electronic equipment in a working state through an infrared thermal imaging camera on three axes, and the computer terminal is used for acquiring infrared thermal imaging image information of the electronic equipment in three dimensions;
secondly, the computer terminal constructs a heating area three-dimensional map of an internal component of the electronic equipment through three-dimensional map construction software based on the acquired three-dimensional thermal imaging image information, and the three-dimensional image information of the electronic equipment is sorted and calculated through the three-dimensional map construction software to construct the three-dimensional map, so that the service life of the electronic equipment is detected and faults of the electronic equipment are pre-judged through the map;
thirdly, the computer terminal adopts the background temperature value of the electronic equipment through a temperature sensor, the three-dimensional map construction software carries out factor correction on the heating area three-dimensional map of the working state of the electronic equipment based on the acquired temperature data, and factor consideration and correction are carried out by acquiring the surface temperature of the equipment and the working environment temperature of the equipment so as to ensure that the subsequent detection and judgment effects are better;
and step four, the three-dimensional map construction software pre-judges the service life of the internal components of the electronic equipment based on the heating area three-dimensional map corrected by the factors, and the detection and pre-judgment effects are better through the relevant consideration of the factors. The scheme has the advantages of good implementable effect, good controllability and controllable precision. Also, this manner is merely an illustration of a preferred example, but not limited thereto. When the invention is implemented, appropriate replacement and/or modification can be carried out according to the requirements of users.
In another example, in the second step, the method further comprises:
the three-dimensional map building software is internally pre-stored with a three-dimensional stereogram of the electronic equipment with rotatable dimensionality, and the electronic equipment can acquire a three-dimensional image of a component of the electronic equipment through the pre-stored three-dimensional stereogram so as to facilitate later judgment;
the three-dimensional map construction software analyzes and calculates the edge angle of the three-dimensional thermal imaging image information according to the acquired three-dimensional thermal imaging image information to obtain the related position information of the electronic equipment, the angle and the position information of the electronic equipment in the three-dimensional image are acquired by an edge calculation method of the image information, the image information is acquired by adopting an edge algorithm, the three-dimensional map construction software is relatively mature at present, and only the three-dimensional map construction software needs to be patched;
the three-dimensional map construction software performs dimension rotation on the three-dimensional map of the electronic equipment through the position information so as to enable the three-dimensional map to be basically overlapped with the heating area three-dimensional map, and the three-dimensional map construction software correspondingly rotates the three-dimensional map so as to enable the three-dimensional map to be overlapped with the heating area three-dimensional map, so that the components in the image information can be conveniently marked at the later stage;
the three-dimensional map construction software calls marking information of each component in a three-dimensional stereogram of the electronic equipment, for example, marks the name of a certain component 'control mainboard' in a component, so that the software can give out which part a functional component with a problem belongs to when judging, the later maintenance is convenient, the marking symbol number can be in a Chinese, English or abbreviation form, or can be a digital mark, and the corresponding part is marked by adopting related marking information, and the three-dimensional map construction software correspondingly names the marks of corresponding regions based on the aligned three-dimensional stereogram so as to obtain the name of the component with the problem in the three-dimensional stereogram. The scheme has the advantages of good implementable effect, strong operability and good adaptability. Also, this manner is merely an illustration of a preferred example, but not limited thereto. When the invention is implemented, appropriate replacement and/or modification can be carried out according to the requirements of users.
In another example, in the second step, the three-dimensional map building software performs block division based on the marks and the RGB values in the thermal zone stereo map based on the color block difference of the adjacent regions in the three-dimensional map. By adopting the scheme, the blocks of the adjacent areas are divided according to the color difference of the three-dimensional image of thermal imaging, so that the operation and comparison range is reduced, the service life can be predicted more quickly, and the method has the advantages of good implementable effect, strong operability and good adaptability. Also, this manner is merely an illustration of a preferred example, but not limited thereto. The invention can be implemented by appropriate replacement and/or modification according to the requirements of users.
In another example, in step three, the three-dimensional map building software compares the acquired background temperature of the electronic device with corresponding first threshold values stored in the software in advance, if the acquired background temperature exceeds the first threshold value range, the RGB values of the colors of each block in the heat-generating region three-dimensional map are proportionally adjusted, if the first threshold value is set to 20 to 35 degrees, if the measured temperature is 40 degrees, the values of each block can be proportionally adjusted, if the temperature is 1 degree higher, the color concentration is increased by 1 to 3 levels, and vice versa, R (209), G (71), B (71) of the block is adjusted to R (172), G (107), B (107);
if the color of each block in the three-dimensional map of the heating area just falls into the first threshold range, the color of each block in the three-dimensional map of the heating area is not operated;
if the temperature is lower than the first threshold range, proportionally adjusting the RGB value of each block color in the heat-generating area stereo map, and if the measured temperature is 15 ℃, adjusting the R (167), G (102) and B (102) of the block into R (193), G (68) and B (68);
wherein the background temperature includes the temperature of the stage itself and the operating temperature of the surface of the electronic device when the electronic device is operating. By adopting the scheme, under the condition that the colors of the blocks are obtained in real time, the influence of the environment temperature and the equipment temperature on the colors of the conductors of the blocks is considered, and the RGB values corresponding to the colors are adaptively adjusted according to the temperature values, so that the detection precision is controllable. Also, this manner is merely an illustration of a preferred example, but not limited thereto. When the invention is implemented, appropriate replacement and/or modification can be carried out according to the requirements of users.
In another example, in step four, a second threshold for pre-determining the service life of the electronic device is pre-stored in the three-dimensional map building software, and the three-dimensional map building software compares the RGB value of the color of each block with the second threshold, and if the RGB value exceeds the range of the second threshold, determines that the service life of the block is short;
if the current block falls into the range of the second threshold, judging that the use of the block is in a normal condition;
if the range is lower than the second threshold value, the block is judged to be in a more excellent working condition. By adopting the scheme, the service life of the part is judged through the adjusted color of the three-dimensional map, and the method is simple, intuitive, controllable in precision, good in implementable effect, strong in operability and good in adaptability. Also, this manner is merely an illustration of a preferred example, but not limited thereto. When the invention is implemented, appropriate replacement and/or modification can be carried out according to the requirements of users.
The number of apparatuses and the scale of the process described herein are intended to simplify the description of the present invention. Applications, modifications and variations of the stereo-atlas apparatus for analysing the performance of an electronic apparatus of the invention will be apparent to those skilled in the art.
While embodiments of the invention have been disclosed above, it is not intended to be limited to the uses listed in the specification and examples. It can be applied to all kinds of fields suitable for the present invention. Additional modifications will readily occur to those skilled in the art. The invention is therefore not to be limited to the specific details and illustrative examples shown and described herein, without departing from the general concept as defined by the appended claims and their equivalents.
Claims (9)
1. A stereogram apparatus for analyzing performance of an electronic device, comprising:
the workbench is provided with at least one corresponding infrared thermal imaging camera in at least three directions of an X axis, a Y axis and a Z axis respectively;
the computer terminal is in communication connection with each infrared thermal imaging camera;
wherein, each infrared thermal imaging appearance of making a video recording respectively through can follow the flexible coupling assembling of predetermined direction, and then sets up on the workstation.
2. The stereogram device for analyzing performance of an electronic device as claimed in claim 1 wherein said table is configured as an L-shaped or three-sided enclosure and wherein said table is further provided with a temperature sensor communicatively connected to a computer terminal.
3. The stereogram device for analyzing performance of an electronic device as recited in claim 1, wherein said connection assembly is configured as a lead screw structure for cooperating with an infrared thermal imaging camera.
4. The stereogram device for analyzing electronic device performance of claim 1, wherein the connection component is configured to include: the device comprises a T-shaped supporting piece matched with an infrared thermal imaging camera and a first guide rail which is arranged on a workbench and matched with an upper sliding block of the T-shaped supporting piece;
the connecting piece of the infrared thermal imaging camera is further arranged on the T-shaped supporting piece through an elastic element matched with the connecting piece;
and power mechanisms are respectively arranged at two ends of the T-shaped supporting piece, and power output ends of the power mechanisms are respectively connected with two end parts of the T-shaped supporting piece through common connecting wires.
5. A method of using the stereogram apparatus as claimed in any one of claims 1 to 4, comprising:
the method comprises the following steps that firstly, a computer terminal acquires three-dimensional thermal imaging image information of electronic equipment in a working state through an infrared thermal imaging camera on three axes;
secondly, the computer terminal constructs a heating area three-dimensional map for internal components of the electronic equipment through three-dimensional map construction software based on the acquired three-dimensional thermal imaging image information;
thirdly, the computer terminal adopts the background temperature value of the electronic equipment through a temperature sensor, and the three-dimensional map construction software carries out factor correction on the heating area three-dimensional map of the working state of the electronic equipment based on the acquired temperature data;
and step four, the three-dimensional map building software pre-judges the service life of the internal components of the electronic equipment based on the heating area three-dimensional map after factor correction.
6. The stereogram device for analyzing the performance of electronic devices as recited in claim 5, further comprising, in step two:
the three-dimensional map building software is internally pre-stored with a three-dimensional stereogram of electronic equipment with rotatable dimensions;
the three-dimensional map construction software analyzes and calculates the edge angle of the three-dimensional thermal imaging image information according to the acquired three-dimensional thermal imaging image information so as to obtain the relevant position information of the electronic equipment;
the three-dimensional map construction software performs dimension rotation on the three-dimensional map of the electronic equipment through the position information so as to enable the three-dimensional map to be basically overlapped with the heating area three-dimensional map;
the three-dimensional map construction software calls marking information of each component in the three-dimensional stereogram of the electronic equipment and marks the corresponding part by adopting the related marking information.
7. The stereogram apparatus for analyzing performance of an electronic device according to claim 6, wherein in step two, said three-dimensional map building software performs block division based on a difference of color blocks of adjacent regions in the three-dimensional map based on the marks and RGB values in the heat generation region stereogram.
8. The apparatus according to claim 7, wherein in step three, the three-dimensional map building software compares the acquired background temperature of the electronic apparatus with a corresponding first threshold value pre-stored in the software, and adjusts the RGB values of the colors of the blocks in the heat-generating region stereo map in proportion if the first threshold value is exceeded;
if the color of each block in the three-dimensional map of the heating area just falls into the first threshold range, the color of each block in the three-dimensional map of the heating area is not operated;
if the color is lower than the first threshold range, the RGB value of each block color in the three-dimensional map of the heating area is proportionally adjusted upwards;
wherein the background temperature includes the temperature of the stage itself and the operating temperature of the surface of the electronic device when the electronic device is operating.
9. The apparatus according to claim 7, wherein in step four, the three-dimensional map building software stores a second threshold for pre-determining the lifetime of the electronic apparatus in advance, and the three-dimensional map building software compares the RGB values of the colors of each block with the second threshold, if the RGB values exceed the second threshold, the lifetime of the block is determined to be low;
if the current block falls into the range of the second threshold, judging that the use of the block is in a normal condition;
if the range is lower than the second threshold value, the block is judged to be in a more excellent working condition.
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Application publication date: 20200221 |