CN111521142A - Paint surface thickness measuring method and device and paint film instrument - Google Patents
Paint surface thickness measuring method and device and paint film instrument Download PDFInfo
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- CN111521142A CN111521142A CN202010283394.1A CN202010283394A CN111521142A CN 111521142 A CN111521142 A CN 111521142A CN 202010283394 A CN202010283394 A CN 202010283394A CN 111521142 A CN111521142 A CN 111521142A
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- paint film
- film instrument
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/08—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness for measuring thickness
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B21/00—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant
- G01B21/02—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness
- G01B21/04—Measuring arrangements or details thereof, where the measuring technique is not covered by the other groups of this subclass, unspecified or not relevant for measuring length, width, or thickness by measuring coordinates of points
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C5/00—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels
- G01C5/06—Measuring height; Measuring distances transverse to line of sight; Levelling between separated points; Surveyors' levels by using barometric means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01C—MEASURING DISTANCES, LEVELS OR BEARINGS; SURVEYING; NAVIGATION; GYROSCOPIC INSTRUMENTS; PHOTOGRAMMETRY OR VIDEOGRAMMETRY
- G01C9/00—Measuring inclination, e.g. by clinometers, by levels
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01M—TESTING STATIC OR DYNAMIC BALANCE OF MACHINES OR STRUCTURES; TESTING OF STRUCTURES OR APPARATUS, NOT OTHERWISE PROVIDED FOR
- G01M17/00—Testing of vehicles
- G01M17/007—Wheeled or endless-tracked vehicles
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
- G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
- G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
- G01S5/0247—Determining attitude
Abstract
The invention provides a method and a device for measuring paint surface thickness and a paint film instrument, wherein the method comprises the following steps: responding to the selection operation of a user aiming at the part identifier displayed on the display interface, and determining a target part to be measured and the posture of the paint film instrument corresponding to the target part; determining the displacement variation of the varnish film instrument between the current measurement time and the previous measurement time of the current measurement time; wherein, a first position of the paint film instrument at the current measuring moment and a second position of the paint film instrument at the previous measuring moment are both positioned on the target part; and if the current posture of the paint film instrument is matched with the posture of the paint film instrument corresponding to the target part and the displacement variation is larger than a preset displacement threshold, measuring the paint surface thickness at the first position on the target part to obtain a paint surface measuring result corresponding to the current measuring time. The method can effectively improve the reliability of the paint thickness measurement result.
Description
Technical Field
The invention relates to the technical field of paint film measurement, in particular to a method and a device for measuring paint surface thickness and a paint film instrument.
Background
With the improvement of living standard and the adaptation of the current faster life rhythm, people usually choose a walk-substituting tool such as a vehicle, a bicycle or an electric vehicle when going out, wherein the surface of the walk-substituting tool is usually coated with paint and other materials. Through measuring the lacquer painting thickness of painting on the instrument surface of riding instead of walk, can learn this instrument of riding instead of walk whether carry out maintenance operations such as panel beating maintenance. Taking the paint thickness of a vehicle as an example, the current mode of detecting the paint thickness is that a detector detects multiple positions of the vehicle by using a paint film instrument to obtain the paint thickness of each position, and then judges whether the vehicle is maintained by a metal plate.
Disclosure of Invention
In view of this, the present invention provides a paint thickness measuring method, a paint thickness measuring device and a paint film apparatus, which can effectively improve the reliability of the paint thickness measurement result.
In a first aspect, an embodiment of the present invention provides a method for measuring paint surface thickness, where the method is applied to a paint film apparatus, the paint film apparatus is used to measure paint surface thickness of a target object, a display interface of the paint film apparatus displays part identifiers of multiple parts to be measured of the target object, and the paint film apparatus stores paint film apparatus postures corresponding to the parts to be measured, where the method includes: responding to the selection operation of a user for the part identifier displayed on the display interface, and determining a target part to be measured and the paint film instrument posture corresponding to the target part; determining the displacement variation of the varnish film instrument between the current measurement time and the previous measurement time of the current measurement time; wherein a first position of the paint film instrument at the current measuring time and a second position of the paint film instrument at the previous measuring time are both positioned on the target part; and if the current posture of the paint film instrument is matched with the posture of the paint film instrument corresponding to the target part and the displacement variation is larger than a preset displacement threshold, measuring the paint surface thickness at the first position on the target part to obtain a paint surface measurement result corresponding to the current measurement time.
In one embodiment, the paint film meter is provided with an acceleration sensor; the step of determining the displacement variation of the varnish instrument between the current measurement time and the previous measurement time corresponding to the current measurement time comprises the following steps: measuring the acceleration of the paint film instrument at the current measuring moment by using the acceleration sensor; performing secondary integral operation on the acceleration to obtain coordinate data of a first position of the paint film instrument at the current measurement time; and determining the displacement variation of the paint film instrument according to the coordinate data corresponding to the current measuring moment and the coordinate data corresponding to the previous measuring moment.
In one embodiment, the paint film meter further comprises a gyroscope; the method further comprises the following steps: and correcting the movement direction of the displacement variable quantity by using the angular speed of the paint film instrument measured by the gyroscope.
In one embodiment, the paint film appearance attitude comprises a vertical attitude and a horizontal attitude; the method further comprises the following steps: and determining the current posture of the paint film instrument according to an included angle between a coordinate axis arranged in the acceleration sensor and the gravity acceleration direction.
In one embodiment, the paint film apparatus further comprises a bluetooth module; the step of determining the displacement variation of the varnish instrument between the current measurement time and the previous measurement time corresponding to the current measurement time further comprises: if a Bluetooth signal sent by a Bluetooth base station within a preset range from the paint film instrument is received through the Bluetooth module, determining coordinate data of a first position of the paint film instrument at the current measurement time based on the strength of the Bluetooth signal; and determining the displacement variation of the paint film instrument according to the coordinate data corresponding to the current measuring moment and the coordinate data corresponding to the previous measuring moment.
In one embodiment, the paint film meter further comprises an air pressure sensor; the step of determining the displacement variation of the varnish instrument between the current measurement time and the previous measurement time corresponding to the current measurement time further comprises: measuring the air pressure value at the current measuring moment by using the air pressure sensor; calculating the height of a first position of the paint film instrument at the current measuring time according to the air pressure value; and determining the displacement variation of the paint film instrument in the vertical direction according to the height corresponding to the current measuring moment and the height corresponding to the previous measuring moment.
In one embodiment, the method further comprises: comparing the paint surface measurement results of all positions in the target part, and determining the target position from all the positions according to the comparison result; the thickness of the paint surface at the target position is larger than the thickness of the paint surface at other positions in the target position; or obtaining the paint thickness of a preset reference point, and calculating the difference value between the paint measurement result of each position in the target part and the paint thickness of the preset reference point; and if the difference is larger than a preset difference threshold, determining that the position corresponding to the difference is the target position.
In a second aspect, an embodiment of the present invention further provides a device for measuring paint surface thickness, where the device is applied to a paint film apparatus, the paint film apparatus is used to measure paint surface thickness of a target object, a display interface of the paint film apparatus displays part identifiers of a plurality of parts to be measured of the target object, and the paint film apparatus stores paint film apparatus postures corresponding to the parts to be measured, and the device includes: the gesture determining module is used for responding to the selection operation of a user aiming at the part identifier displayed on the display interface and determining a target part to be measured and the paint film instrument gesture corresponding to the target part; the displacement determining module is used for determining the displacement variation of the paint film instrument between the current measuring time and the previous measuring time of the current measuring time; wherein a first position of the paint film instrument at the current measuring time and a second position of the paint film instrument at the previous measuring time are both positioned on the target part; and the measuring module is used for measuring the paint surface thickness at the first position on the target part to obtain a paint surface measuring result corresponding to the current measuring moment if the current posture of the paint film instrument is matched with the posture of the paint film instrument corresponding to the target part and the displacement variation is greater than a preset displacement threshold value.
In a third aspect, an embodiment of the present invention further provides a paint film apparatus, including a processor and a memory; the memory has stored thereon a computer program which, when executed by the processor, performs the method of any one of the aspects as provided in the first aspect.
In a fourth aspect, an embodiment of the present invention further provides a computer storage medium for storing computer software instructions for use in any one of the methods provided in the first aspect.
The embodiment of the invention has the following beneficial effects:
the embodiment of the invention provides a paint surface thickness measuring method, a paint surface thickness measuring device and a paint film instrument, which are applied to the paint film instrument, wherein the paint film instrument is used for measuring the paint surface thickness of a target object, part marks of a plurality of parts to be measured of the target object are displayed on a display interface of the paint film instrument, the paint film instrument also stores the postures of the paint film instruments corresponding to the parts to be measured, in the process of measuring the paint surface thickness, firstly, the postures of the target part to be measured and the paint film instrument corresponding to the target part are determined in response to the selection operation of a user aiming at the part marks displayed on the display interface, then, the displacement variation of the paint film instrument between the current measuring time and the previous measuring time of the current measuring time is determined, if the current posture of the paint film instrument is matched with the posture of the paint film instrument corresponding to the target part and the displacement variation is greater than a preset displacement threshold value, the paint surface thickness, and obtaining a paint surface measurement result corresponding to the current measurement time, wherein a first position of the paint film instrument at the current measurement time and a second position of the paint film instrument at the previous measurement time are both positioned on the target part. According to the method, the part mark and the posture of the paint film instrument corresponding to each part to be measured are stored in the paint film instrument, the posture of the paint film instrument corresponding to the target part is determined by responding to the selection operation of a user for the part mark, the paint surface thickness measured when the current posture of the paint film instrument is matched with the posture of the paint film instrument corresponding to the target part is more accurate, and the same position can be determined not to be repeatedly measured by the user when the displacement variation of the paint film instrument is larger than the displacement threshold, so that compared with the situation that the paint surface thickness or the fake paint surface thickness and the like of the same position are detected for multiple times in the prior art, the reliability of the paint surface thickness measurement result can be effectively improved.
Additional features and advantages of the invention will be set forth in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. The objectives and other advantages of the invention will be realized and attained by the structure particularly pointed out in the written description and claims hereof as well as the appended drawings.
In order to make the aforementioned and other objects, features and advantages of the present invention comprehensible, preferred embodiments accompanied with figures are described in detail below.
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 described below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and other drawings can be obtained by those skilled in the art without creative efforts.
Fig. 1 is a schematic flow chart of a method for measuring a thickness of a painted surface according to an embodiment of the present invention;
FIG. 2 is a schematic diagram of a display interface according to an embodiment of the present invention;
fig. 3 is a schematic view of a part to be measured according to an embodiment of the present invention;
FIG. 4 is an interactive schematic view of a paint film apparatus provided by an embodiment of the invention;
FIG. 5 is an interactive schematic view of another paint film apparatus provided by an embodiment of the invention;
FIG. 6 is a schematic structural diagram of a device for measuring a thickness of a painted surface according to an embodiment of the present invention;
fig. 7 is a schematic structural diagram of a paint film coating apparatus provided by an embodiment of the invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions of the present invention will be clearly and completely described below with reference to the embodiments, 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.
At present, the existing paint surface thickness has the following disadvantages: (1) the detection method depends on the subjective performance of the detection personnel, and the reliability of the detection result of the thickness of the paint surface depends on the subjective performance of the detection personnel; (2) the paint detection result is required to be subjected to spot inspection punishment, but the spot inspection punishment can only be carried out after the paint detection is finished, and the punishment can not play a role in supervising detection personnel in the detection process; (3) the monitoring cameras are arranged in the fixed field, supervisors are distributed to supervise the detection process in real time, more manpower and material resources are wasted, and the field limitation is realized. Based on the method, the device and the paint film instrument for measuring the paint surface thickness, the method and the device for measuring the paint surface thickness can effectively improve the reliability of the paint surface thickness measurement result.
For the understanding of the present embodiment, a detailed description will be given of a paint surface thickness measuring method disclosed in the present embodiment, which is applied to a paint film machine for measuring the paint surface thickness of a target object, wherein the target object can be a vehicle or other painted objects, the display interface of the paint film instrument displays the part identifiers of a plurality of parts to be measured of the target object, taking a vehicle as an example, the parts to be measured may include parts such as a roof, a front deck cover, a trunk lid, a door, and front and rear fender panels, and the paint film machine stores paint film machine attitudes corresponding to the respective parts to be measured, and in one embodiment, the paint film machine attitude may include a vertical attitude and a horizontal attitude, the postures of the paint film machines corresponding to the parts of the car roof, the front engine room cover, the trunk cover and the like are vertical postures, and the postures of the paint film machines corresponding to the parts of the car door, the front fender, the rear fender and the like are horizontal postures.
Referring to fig. 1, a flow chart of a method for measuring a paint thickness mainly includes the following steps S102 to S106:
and S102, responding to the selection operation of the user aiming at the part identifier displayed on the display interface, and determining the target part to be measured and the paint film appearance gesture corresponding to the target part.
In which, the display interface displays an object identifier (such as "vehicle 01") of a target object and a part identifier (such as "front engine room cover") of a part to be measured, and specifically, refer to a schematic diagram of a display interface shown in fig. 2, where fig. 2 also displays a paint surface measurement result "66.0 um". In one embodiment, a selection button can be arranged on the paint film instrument, so that a user can select the part mark by a button mode to determine the target part; in another embodiment, the display interface on the paint film machine is a touchable screen, so that a user can select the part mark through point touch operation to determine the target part. After the target part is determined, the posture of the paint film instrument corresponding to the target part can be determined from the postures of the paint film instrument corresponding to the parts to be measured, which are stored in the paint film instrument.
And step S104, determining the displacement variation of the varnish instrument between the current measurement time and the previous measurement time of the current measurement time.
Wherein, the first position of the paint film instrument at the current measuring time and the second position of the paint film instrument at the previous measuring time are both positioned on the target part. In order to avoid that a user performs measurement at the same position for multiple times as much as possible, in the embodiment of the present invention, the displacement variation of the paint film apparatus between two measurements needs to be determined, and in some embodiments, one or more of a GPS (global positioning System) positioning device, an acceleration sensor, a bluetooth module, or an air pressure sensor may be provided in the paint film apparatus to track the paint film apparatus, so as to determine the displacement variation of the paint film apparatus between a current measurement time and a previous measurement time of the current measurement time.
And S106, if the current posture of the paint film instrument is matched with the posture of the paint film instrument corresponding to the target part and the displacement variation is larger than a preset displacement threshold, measuring the paint surface thickness at the first position on the target part to obtain a paint surface measuring result corresponding to the current measuring time.
Because the paint surface measurement result with higher accuracy can be obtained only by ensuring that the probe of the paint film instrument is tightly attached to the target object when the paint surface thickness is measured, the current posture of the paint film instrument is judged, and if the current posture of the paint film instrument is the same as the posture of the paint film instrument corresponding to the target part, the probe of the paint film instrument is tightly attached to the target object at the moment. In order to avoid that the user performs measurement at the same position for multiple times as much as possible, in the embodiment of the invention, when the displacement variation is greater than the preset displacement threshold, the paint thickness at the first position on the target part is measured, so that the paint measurement results at different positions are obtained.
According to the paint surface thickness measuring method provided by the embodiment of the invention, the part identifier and the posture of the paint film instrument corresponding to each part to be measured are stored in the paint film instrument, the posture of the paint film instrument corresponding to the target part is determined by responding to the selection operation of a user for the part identifier, the measured paint surface thickness is more accurate when the current posture of the paint film instrument is matched with the posture of the paint film instrument corresponding to the target part, and the same position can be determined not to be repeatedly measured by the user when the displacement variation of the paint film instrument is greater than the displacement threshold, so that compared with the prior art that the conditions of detecting the paint surface thickness or the fake paint surface thickness at the same position for many times exist, the reliability of the paint surface thickness measuring result can be effectively improved.
The embodiment of the invention utilizes the displacement variation of the paint film instrument between two measurements to realize the fool-proof mechanism of the paint film instrument, so that the embodiment of the invention needs to accurately determine the displacement variation of the paint film instrument, wherein, the following three modes, namely, the first mode to the third mode, exemplarily provide a mode for determining the displacement variation of the paint film instrument between the current measurement time and the previous measurement time corresponding to the current measurement time:
the first method is as follows: and determining the displacement variation of the varnish coating instrument between the current measurement time and the previous measurement time corresponding to the current measurement time by using the acceleration sensor. In practical application, the paint film instrument should be provided with an acceleration sensor. So that when the displacement variation of the varnish meter between the current measurement time and the previous measurement time corresponding to the current measurement time is determined by the acceleration sensor, the following steps 1 to 3 can be referred to:
step 1, measuring the acceleration of the paint film instrument at the current measuring moment by using an acceleration sensor. The acceleration sensor may be a three-axis acceleration sensor or a two-axis acceleration sensor, which may be specifically selected based on actual requirements, and the embodiment of the present invention is not limited thereto.
And 2, performing secondary integral operation on the acceleration to obtain coordinate data of a first position of the paint film instrument at the current measurement time. In one embodiment, the moving speed of the paint film instrument at the current measuring time can be obtained by performing primary integration on the acceleration, and the coordinate data of the paint film instrument at the current measuring time can be obtained by performing secondary integration on the acceleration. And similarly, carrying out secondary integration on the acceleration at the previous measurement moment to obtain the coordinate data of the paint film instrument at the previous measurement moment.
And 3, determining the displacement variation of the paint film instrument according to the coordinate data corresponding to the current measuring moment and the coordinate data corresponding to the previous measuring moment. In one embodiment, the difference between the coordinate data corresponding to the current measurement time and the coordinate data corresponding to the previous measurement time can be used as the displacement variation of the paint applicator.
In order to further improve the accuracy of the displacement variation, the paint film instrument can be further provided with a gyroscope, so that the movement direction of the displacement variation is corrected by using the angular speed of the paint film instrument measured by the gyroscope. Specifically, an inertial reference system can be preset, the initial position in the inertial reference system is used as an initial condition, and the angular rate is integrated to obtain the motion position of the paint film instrument.
The second method comprises the following steps: and determining the displacement variation of the varnish instrument between the current measurement time and the previous measurement time corresponding to the current measurement time by utilizing Bluetooth communication. In practical application, the paint film instrument should be provided with a Bluetooth module. So that when the displacement variation of the paint film instrument between the current measurement time and the previous measurement time corresponding to the current measurement time is determined by using the Bluetooth communication, the following steps a to b can be referred to:
step a, if a Bluetooth signal sent by a Bluetooth base station within a preset range from a paint film instrument is received through a Bluetooth module, determining coordinate data of a first position of the paint film instrument at the current measurement time based on the strength of the Bluetooth signal. It can be understood that when the Bluetooth base station is far away from the paint film instrument, the Bluetooth signal received by the Bluetooth module of the paint film instrument is weak, and when the Bluetooth base station is near to the paint film instrument, the Bluetooth signal received by the Bluetooth module of the paint film instrument is strong, so that the distance between the paint film instrument and each Bluetooth base station can be determined according to the corresponding relation between the signal intensity and the distance, and the coordinate data of the paint film instrument can be determined.
And b, determining the displacement variation of the paint film instrument according to the coordinate data corresponding to the current measuring moment and the coordinate data corresponding to the previous measuring moment. In one embodiment, the difference between the coordinate data corresponding to the current measurement time and the coordinate data corresponding to the previous measurement time can be used as the displacement variation of the paint applicator.
The second mode is also a beacon (beacon) mode, one or more beacon base stations are required to be established, and the paint film instrument receives and analyzes data of the beacon base stations through the Bluetooth module so as to obtain the position of the paint film instrument, so that the purpose of determining the displacement variation of the paint film instrument is achieved.
The third method comprises the following steps: and determining the displacement variation of the varnish film instrument between the current measurement time and the previous measurement time corresponding to the current measurement time by using the air pressure sensor. In practical application, the paint film instrument should be provided with an air pressure sensor. When the air pressure sensor is used for determining the displacement variation of the paint film instrument between the current measurement time and the previous measurement time corresponding to the current measurement time, firstly, the air pressure value of the current measurement time is measured by the air pressure sensor, then, the height of the first position of the paint film instrument at the current measurement time is calculated according to the air pressure value, and further, the displacement variation of the paint film instrument in the vertical direction is determined according to the height corresponding to the current measurement time and the height corresponding to the previous measurement time. In one embodiment, when the air pressure sensor measures the air pressure value at the current measurement time, the height corresponding to the paint film instrument at the current measurement time can be determined according to a conversion formula of the air pressure value and the altitude, and similarly, the height corresponding to the paint film instrument at the previous measurement time can be determined, and then the difference value between the height corresponding to the current measurement time and the height corresponding to the previous measurement time is used as the displacement variation of the paint film instrument in the vertical direction.
The paint film instrument needs to move when detecting a plurality of different positions, and the motion trail of a probe of the paint film instrument in the detection process is as follows: the method comprises the steps of contacting a target object, lifting, moving and contacting a target vehicle, obtaining coordinate data of a paint film instrument through signal values (namely, the acceleration) uploaded by an acceleration sensor through quadratic integral operation, and compensating and revising the motion direction of the paint film instrument through the angular velocity uploaded by a set gyroscope, so that the displacement change between two contact vehicles of a probe can be obtained more accurately. If the displacement variation is smaller than the displacement threshold, the same position detected by the detection personnel is considered, and the data is invalid. Otherwise, if the displacement variation is larger than the displacement threshold, the detection personnel is considered to operate according to the requirement, and the paint surface measurement result is effective. Whether the paint film instrument is detected at the same position or not is judged through the displacement variable quantity, so that a false paint surface measuring result detected at the same position by a detector is avoided, and the accuracy of the paint surface measuring result is ensured.
In order to improve the accuracy of paint surface thickness measurement, in the process of measuring the paint surface thickness of a target object, the current posture of a paint film instrument is kept to be matched with the paint film instrument corresponding to a target part, wherein the posture of the paint film instrument comprises a vertical posture and a horizontal posture. Taking a three-axis acceleration sensor as an example, assuming that in the acceleration sensor, the component of the acceleration of gravity in the Az axis direction is G, Ax and the component of the acceleration of gravity in the Ay axis direction is 0, the current posture of the paint film apparatus is a horizontal posture.
In addition, the measured thickness of the finish can be used to determine whether the target object has undergone sheet metal repair, and the position of the sheet metal repair needs to be determined, so embodiments of the present invention further exemplarily provide a method for determining the position of the sheet metal repair according to the measurement result of the thickness of the finish, which can be specifically seen in the following manner (1) and manner (2):
mode (1): and comparing the paint surface measurement results of all positions in the target part, and determining the target position from all positions according to the comparison result. The thickness of the paint surface at the target position is larger than the thickness of the paint surface at other positions in the target position. Taking a target object as a vehicle for explanation, as shown in fig. 3, a schematic diagram of a part to be measured assumes that 9 positions to be measured exist in a front door of the vehicle, and are uniformly distributed in a range of the front door, and by comparing thicknesses of painted surfaces at any two positions, if the thickness of the painted surface at a certain position is significantly higher than those at other positions, the position is the target position.
Mode (2): obtaining the paint thickness of a preset reference point, and calculating the difference value between the paint measurement result of each position in the target part and the paint thickness of the preset reference point; and if the difference value is larger than a preset difference value threshold value, determining the position corresponding to the difference value as a target position. For example, a seat reference point is selected from the positions shown in fig. 3, the paint thickness of the reference point is obtained, the difference between the paint thickness of other positions and the paint thickness of the reference point is calculated, if the difference is higher than a preset difference threshold value, the paint thickness of the position is thicker, and the position is the target position.
In the process of detecting the paint surface thickness, the method firstly judges whether the current posture of the paint film instrument is matched with the posture of the paint film instrument corresponding to the target part and judges whether the displacement variation is greater than a preset displacement threshold, and if the current posture of the paint film instrument is matched with the posture of the paint film instrument corresponding to the target part and the displacement variation is greater than the preset displacement threshold, the paint surface thickness is measured. In another embodiment, the paint surface thickness may also be measured, and then it is determined whether the current posture of the paint film instrument matches the posture of the paint film instrument corresponding to the target portion, and it is determined whether the displacement variation is greater than a preset displacement threshold, if the current posture of the paint film instrument matches the posture of the paint film instrument corresponding to the target portion and the displacement variation is greater than the preset displacement threshold, it is determined that the paint surface detection result is valid, and if the current posture of the paint film instrument does not match the posture of the paint film instrument corresponding to the target portion and the displacement variation is less than or equal to the preset displacement threshold, it is determined that the paint surface detection result is invalid.
In addition, in order to facilitate a user to check the measurement result of the paint thickness, the embodiment of the invention can also send the paint measurement result to a specified associated terminal, such as a smart phone, and the associated terminal can be in bluetooth communication with the paint film instrument to receive the paint detection result or the coordinate information of the target position sent by the paint film instrument through bluetooth. The embodiment of the invention provides an interaction schematic diagram of a paint film instrument by taking a target object, namely a vehicle (or a second-hand vehicle) as an example, and is shown in fig. 4, wherein a smart phone is connected with the paint film instrument through Bluetooth, the paint film instrument is used for measuring the paint surface thickness of a plurality of positions in the measured vehicle, and the internal part of the paint film instrument is combined with the posture and displacement variation of the paint film instrument calculated by internal devices (an acceleration sensor and a gyroscope) of the paint film instrument to judge the effectiveness of the measured paint surface measurement result, if the paint surface measurement result is invalid, the paint film instrument gives an alarm, and if the paint surface measurement result is valid, the paint surface measurement result is fed back to the smart phone.
On the basis of the above fig. 4, the embodiment of the present invention further provides a method for determining validity of paint surface measurement result, referring to another paint film instrument interaction diagram shown in fig. 5, an acceleration sensor (also referred to as an accelerometer) has built-in coordinate axes (Ax, Ay, Az), a gyroscope also has built-in coordinate axes (Gx, Gy, Gz), in specific implementation, the current posture of the paint film instrument can be determined by using an acceleration sensor or a gyroscope, for example, the included angle between the coordinate axis built in the acceleration sensor and the gravity acceleration direction determines the current posture of the paint film instrument, and if the gravity acceleration component in the Az axis direction is G, Ax and the gravity acceleration component in the Ay axis direction is 0, the current posture of the paint film instrument is a horizontal posture, and similarly, the current posture of the paint film instrument can also be determined by utilizing an included angle between a coordinate axis arranged in the gyroscope and the gravity acceleration direction. In addition, the acceleration sensor is a three-axis sensor, and a two-axis acceleration sensor may also be used in practical applications, which is not limited in the embodiment of the present invention.
Fig. 5 illustrates that coordinate data of the paint film instrument is determined based on acceleration of the paint film instrument measured by the acceleration sensor, filtering and integral calculation are performed on the coordinate data, the motion direction of the paint film instrument is corrected by combining the angular velocity measured by the gyroscope, so that more accurate current posture and displacement variation of the paint film instrument are obtained, validity of a paint surface measurement result is judged based on the current posture and the displacement variation of the paint film instrument, if the paint surface measurement result is valid, the paint surface measurement result is uploaded to the smart phone, and if the paint surface measurement result is invalid, the paint film instrument gives an alarm.
The embodiment utilizes the acceleration sensor and the gyroscope to better realize the fool-proof mechanism, and the implementation method of the fool-proof mechanism can also be applied to other products with the same operation requirements, thereby relieving the problem of cheating of the measurement result.
In summary, the embodiment of the invention utilizes the posture and displacement variation of the device (i.e., the paint film coating instrument) to judge whether the detection personnel cheat the paint surface detection result, thereby effectively playing a role in use supervision. The method is not limited to a specific field, does not need supervision of a specially-assigned person, standardizes the use mode of detection personnel, and saves manpower and material resources.
For the paint thickness measuring method provided by the foregoing embodiment, an embodiment of the present invention provides a paint thickness measuring device, which is applied to a paint film instrument, where the paint film instrument is used to measure the paint thickness of a target object, a display interface of the paint film instrument displays part identifiers of a plurality of parts to be measured of the target object, and the paint film instrument stores postures of the paint film instrument corresponding to the parts to be measured, see fig. 6, which is a schematic structural diagram of the paint thickness measuring device, and the device mainly includes the following parts:
and the gesture determining module 602 is configured to determine a target part to be measured and a paint film appearance gesture corresponding to the target part in response to a selection operation of a user on the part identifier displayed on the display interface.
The displacement determining module 604 is used for determining the displacement variation of the varnish coating instrument between the current measuring time and the previous measuring time of the current measuring time; wherein, the first position of the paint film instrument at the current measuring time and the second position of the paint film instrument at the previous measuring time are both positioned on the target part.
And the measuring module 606 is configured to measure the paint surface thickness at the first position on the target portion to obtain a paint surface measurement result corresponding to the current measurement time if the current posture of the paint film instrument is matched with the posture of the paint film instrument corresponding to the target portion and the displacement variation is greater than a preset displacement threshold.
According to the paint surface thickness measuring device provided by the embodiment of the invention, the part identifier and the posture of the paint film instrument corresponding to each part to be measured are stored in the paint film instrument, the posture of the paint film instrument corresponding to the target part is determined by responding to the selection operation of a user for the part identifier, the measured paint surface thickness is more accurate when the current posture of the paint film instrument is matched with the posture of the paint film instrument corresponding to the target part, and the same position can be determined not to be repeatedly measured by the user when the displacement variation of the paint film instrument is greater than the displacement threshold, so that compared with the prior art that the conditions that the paint surface thickness at the same position is repeatedly detected or the paint surface thickness is fake and the like exist, the reliability of the paint surface thickness measuring result can be effectively improved.
In one embodiment, the paint film meter is provided with an acceleration sensor; the displacement determination module 604 is further configured to: measuring the acceleration of the paint film instrument at the current measuring moment by using an acceleration sensor; performing secondary integral operation on the acceleration to obtain coordinate data of a first position of the paint film instrument at the current measurement time; and determining the displacement variation of the paint film instrument according to the coordinate data corresponding to the current measuring moment and the coordinate data corresponding to the previous measuring moment.
In one embodiment, the paint film meter further comprises a gyroscope; the device also comprises a correction module for correcting the motion direction of the displacement variation by using the angular velocity of the paint film instrument measured by the gyroscope.
In one embodiment, the paint film appearance attitude comprises a vertical attitude and a horizontal attitude; the even number device further comprises a posture determining module which is used for determining the current posture of the paint film instrument according to an included angle between a coordinate axis arranged in the acceleration sensor and the gravity acceleration direction.
In one embodiment, the paint film apparatus further comprises a bluetooth module; the displacement determination module 604 is further configured to: if a Bluetooth signal sent by a Bluetooth base station within a preset range from the paint film instrument is received through the Bluetooth module, determining coordinate data of a first position of the paint film instrument at the current measurement time based on the strength of the Bluetooth signal; and determining the displacement variation of the paint film instrument according to the coordinate data corresponding to the current measuring moment and the coordinate data corresponding to the previous measuring moment.
In one embodiment, the paint film meter further comprises an air pressure sensor; the displacement determination module 604 is further configured to: measuring the air pressure value at the current measuring moment by using an air pressure sensor; calculating the height of a first position of the paint film instrument at the current measuring time according to the air pressure value; and determining the displacement variation of the paint film instrument in the vertical direction according to the height corresponding to the current measurement moment and the height corresponding to the previous measurement moment.
In one embodiment, the apparatus further includes a position determining module, configured to compare the paint surface measurement results at each position in the target portion, and determine a target position from each position according to the comparison result; the thickness of the paint surface at the target position is larger than the thickness of the paint surface at other positions in the target position; or obtaining the paint thickness of a preset reference point, and calculating the difference value between the paint measurement result of each position in the target part and the paint thickness of the preset reference point; and if the difference value is larger than a preset difference value threshold value, determining the position corresponding to the difference value as a target position.
The device provided by the embodiment of the present invention has the same implementation principle and technical effect as the method embodiments, and for the sake of brief description, reference may be made to the corresponding contents in the method embodiments without reference to the device embodiments.
The equipment is a paint film instrument, and particularly, the paint film instrument comprises a processor and a storage device; the storage means has stored thereon a computer program which, when executed by the processor, performs the method of any of the above described embodiments.
Fig. 7 is a schematic structural diagram of a paint film apparatus 100 according to an embodiment of the present invention, where the paint film apparatus includes: a processor 70, a memory 71, a bus 72 and a communication interface 73, wherein the processor 70, the communication interface 73 and the memory 71 are connected through the bus 72; the processor 70 is arranged to execute executable modules, such as computer programs, stored in the memory 71.
The Memory 71 may include a high-speed Random Access Memory (RAM) and may further include a non-volatile Memory (non-volatile Memory), such as at least one disk Memory. The communication connection between the network element of the system and at least one other network element is realized through at least one communication interface 73 (which may be wired or wireless), and the internet, a wide area network, a local network, a metropolitan area network, and the like can be used.
The bus 72 may be an ISA bus, PCI bus, EISA bus, or the like. The bus may be divided into an address bus, a data bus, a control bus, etc. For ease of illustration, only one double-headed arrow is shown in FIG. 7, but this does not indicate only one bus or one type of bus.
The memory 71 is configured to store a program, and the processor 70 executes the program after receiving an execution instruction, and the method executed by the apparatus defined by the flow process disclosed in any of the foregoing embodiments of the present invention may be applied to the processor 70, or implemented by the processor 70.
The processor 70 may be an integrated circuit chip having signal processing capabilities. In implementation, the steps of the above method may be performed by integrated logic circuits of hardware or instructions in the form of software in the processor 70. The Processor 70 may be a general-purpose Processor, and includes a Central Processing Unit (CPU), a Network Processor (NP), and the like; the device can also be a Digital Signal Processor (DSP), an Application Specific Integrated Circuit (ASIC), a Field-Programmable Gate Array (FPGA) or other Programmable logic device, a discrete Gate or transistor logic device, or a discrete hardware component. The various methods, steps and logic blocks disclosed in the embodiments of the present invention may be implemented or performed. A general purpose processor may be a microprocessor or the processor may be any conventional processor or the like. The steps of the method disclosed in connection with the embodiments of the present invention may be directly implemented by a hardware decoding processor, or implemented by a combination of hardware and software modules in the decoding processor. The software module may be located in ram, flash memory, rom, prom, or eprom, registers, etc. storage media as is well known in the art. The storage medium is located in a memory 71, and the processor 70 reads the information in the memory 71 and completes the steps of the method in combination with the hardware thereof.
The computer program product of the readable storage medium provided in the embodiment of the present invention includes a computer readable storage medium storing a program code, where instructions included in the program code may be used to execute the method described in the foregoing method embodiment, and specific implementation may refer to the foregoing method embodiment, which is not described herein again.
The functions, if implemented in the form of software functional units and sold or used as a stand-alone product, may be stored in a computer readable storage medium. Based on such understanding, the technical solution of the present invention may be embodied in the form of a software product, which is stored in a storage medium and includes instructions for causing a computer device (which may be a personal computer, a server, or a network device) to execute all or part of the steps of the method according to the embodiments of the present invention. And the aforementioned storage medium includes: a U-disk, a removable hard disk, a Read-Only Memory (ROM), a Random Access Memory (RAM), a magnetic disk or an optical disk, and other various media capable of storing program codes.
Finally, it should be noted that: the above-mentioned embodiments are only specific embodiments of the present invention, which are used for illustrating the technical solutions of the present invention and not for limiting the same, and the protection scope of the present invention is not limited thereto, although the present invention is described in detail with reference to the foregoing embodiments, those skilled in the art should understand that: any person skilled in the art can modify or easily conceive the technical solutions described in the foregoing embodiments or equivalent substitutes for some technical features within the technical scope of the present disclosure; such modifications, changes or substitutions do not depart from the spirit and scope of the embodiments of the present invention, and they should be construed as being included therein. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (10)
1. The method for measuring the paint surface thickness is characterized by being applied to a paint film instrument, wherein the paint film instrument is used for measuring the paint surface thickness of a target object, the display interface of the paint film instrument displays part marks of a plurality of parts to be measured of the target object, and the paint film instrument stores the posture of the paint film instrument corresponding to each part to be measured, and the method comprises the following steps:
responding to the selection operation of a user for the part identifier displayed on the display interface, and determining a target part to be measured and the paint film instrument posture corresponding to the target part;
determining the displacement variation of the varnish film instrument between the current measurement time and the previous measurement time of the current measurement time; wherein a first position of the paint film instrument at the current measuring time and a second position of the paint film instrument at the previous measuring time are both positioned on the target part;
and if the current posture of the paint film instrument is matched with the posture of the paint film instrument corresponding to the target part and the displacement variation is larger than a preset displacement threshold, measuring the paint surface thickness at the first position on the target part to obtain a paint surface measurement result corresponding to the current measurement time.
2. The method according to claim 1, characterized in that the paint film meter is provided with an acceleration sensor;
the step of determining the displacement variation of the varnish instrument between the current measurement time and the previous measurement time corresponding to the current measurement time comprises the following steps:
measuring the acceleration of the paint film instrument at the current measuring moment by using the acceleration sensor;
performing secondary integral operation on the acceleration to obtain coordinate data of a first position of the paint film instrument at the current measurement time;
and determining the displacement variation of the paint film instrument according to the coordinate data corresponding to the current measuring moment and the coordinate data corresponding to the previous measuring moment.
3. The method of claim 2, wherein the paint film meter further comprises a gyroscope;
the method further comprises the following steps: and correcting the movement direction of the displacement variable quantity by using the angular speed of the paint film instrument measured by the gyroscope.
4. The method of claim 2, wherein the paint film meter attitude comprises a vertical attitude and a horizontal attitude;
the method further comprises the following steps: and determining the current posture of the paint film instrument according to an included angle between a coordinate axis arranged in the acceleration sensor and the gravity acceleration direction.
5. The method of claim 1, wherein the paint film meter further comprises a bluetooth module;
the step of determining the displacement variation of the varnish instrument between the current measurement time and the previous measurement time corresponding to the current measurement time further comprises:
if a Bluetooth signal sent by a Bluetooth base station within a preset range from the paint film instrument is received through the Bluetooth module, determining coordinate data of a first position of the paint film instrument at the current measurement time based on the strength of the Bluetooth signal;
and determining the displacement variation of the paint film instrument according to the coordinate data corresponding to the current measuring moment and the coordinate data corresponding to the previous measuring moment.
6. The method of claim 1, wherein the paint film meter further comprises an air pressure sensor;
the step of determining the displacement variation of the varnish instrument between the current measurement time and the previous measurement time corresponding to the current measurement time further comprises:
measuring the air pressure value at the current measuring moment by using the air pressure sensor;
calculating the height of a first position of the paint film instrument at the current measuring time according to the air pressure value;
and determining the displacement variation of the paint film instrument in the vertical direction according to the height corresponding to the current measuring moment and the height corresponding to the previous measuring moment.
7. The method of claim 1, further comprising:
comparing the paint surface measurement results of all positions in the target part, and determining the target position from all the positions according to the comparison result; the thickness of the paint surface at the target position is larger than the thickness of the paint surface at other positions in the target position;
or obtaining the paint thickness of a preset reference point, and calculating the difference value between the paint measurement result of each position in the target part and the paint thickness of the preset reference point; and if the difference is larger than a preset difference threshold, determining that the position corresponding to the difference is the target position.
8. The device for measuring the paint surface thickness is applied to a paint film instrument, the paint film instrument is used for measuring the paint surface thickness of a target object, a display interface of the paint film instrument displays part marks of a plurality of parts to be measured of the target object, and the paint film instrument stores the posture of the paint film instrument corresponding to each part to be measured, and the device comprises:
the gesture determining module is used for responding to the selection operation of a user aiming at the part identifier displayed on the display interface and determining a target part to be measured and the paint film instrument gesture corresponding to the target part;
the displacement determining module is used for determining the displacement variation of the paint film instrument between the current measuring time and the previous measuring time of the current measuring time; wherein a first position of the paint film instrument at the current measuring time and a second position of the paint film instrument at the previous measuring time are both positioned on the target part;
and the measuring module is used for measuring the paint surface thickness at the first position on the target part to obtain a paint surface measuring result corresponding to the current measuring moment if the current posture of the paint film instrument is matched with the posture of the paint film instrument corresponding to the target part and the displacement variation is greater than a preset displacement threshold value.
9. A paint film instrument is characterized by comprising a processor and a memory;
the memory has stored thereon a computer program which, when executed by the processor, performs the method of any of claims 1 to 7.
10. A computer storage medium storing computer software instructions for use in the method of any one of claims 1 to 7.
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