CN110794168B - Detection method and device for piezoelectric glue spraying system - Google Patents
Detection method and device for piezoelectric glue spraying system Download PDFInfo
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- CN110794168B CN110794168B CN201911038193.9A CN201911038193A CN110794168B CN 110794168 B CN110794168 B CN 110794168B CN 201911038193 A CN201911038193 A CN 201911038193A CN 110794168 B CN110794168 B CN 110794168B
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01P—MEASURING LINEAR OR ANGULAR SPEED, ACCELERATION, DECELERATION, OR SHOCK; INDICATING PRESENCE, ABSENCE, OR DIRECTION, OF MOVEMENT
- G01P15/00—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration
- G01P15/02—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses
- G01P15/08—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values
- G01P15/12—Measuring acceleration; Measuring deceleration; Measuring shock, i.e. sudden change of acceleration by making use of inertia forces using solid seismic masses with conversion into electric or magnetic values by alteration of electrical resistance
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
- B05B17/0615—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers spray being produced at the free surface of the liquid or other fluent material in a container and subjected to the vibrations
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
- B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
- B05B17/00—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups
- B05B17/04—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods
- B05B17/06—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations
- B05B17/0607—Apparatus for spraying or atomising liquids or other fluent materials, not covered by the preceding groups operating with special methods using ultrasonic or other kinds of vibrations generated by electrical means, e.g. piezoelectric transducers
- B05B17/0653—Details
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Abstract
The invention discloses a detection method and a detection device of a piezoelectric glue spraying system, wherein the piezoelectric glue spraying system comprises piezoelectric ceramics, a lever, a spring assembly, a firing pin and a nozzle, wherein the piezoelectric ceramics are set to deform according to power supply voltage applied to the piezoelectric ceramics so as to enable the lever to rotate; the spring assembly is arranged to drive the striker to move towards the nozzle according to rotation; the detection method comprises the following steps: adjusting the power supply voltage to a set value; detecting the current acceleration of the lever when the power supply voltage is a set value; and determining the current state of the piezoelectric glue spraying system according to the current acceleration.
Description
Technical Field
The invention relates to the technical field of reliability detection, in particular to a detection method and a detection device of a piezoelectric glue spraying system.
Background
In the assembly production process of the micro-electro-acoustic product, more and more glue dispensing processes are involved, and the technical requirements on glue dispensing are higher and higher.
A conventional piezoelectric glue spraying system is generally shown in fig. 1 and includes a piezoelectric ceramic 1, a lever 2, a spring assembly 3, a striker 4 and a nozzle 5. In the normal working process of the piezoelectric glue spraying system, a power supply voltage is applied to the piezoelectric ceramics 1, and the piezoelectric ceramics 1 deforms and extends according to the power supply voltage, so that the lever 2 rotates. During the rotation of the lever 2, the spring assembly 3 deforms, and a mechanical force is generated to drive the striker 4 to strike the nozzle 5, so that the glue 6 is sprayed out of the nozzle 5. The glue line is cut off to effect a valve closing action when the needle of the striker 4 strikes the nozzle 5. When the power supply voltage is stopped being applied to the piezoelectric ceramic 1, the piezoelectric ceramic 1 is reset and returns to the initial state, the lever 2 and the firing pin 4 are reset under the action of the spring assembly 3, and the piezoelectric glue spraying system is filled with glue 6.
However, in the debugging and using processes of the piezoelectric glue spraying system, the real-time state of the piezoelectric glue spraying system cannot be accurately determined, so that the piezoelectric glue spraying system can be debugged and maintained.
Disclosure of Invention
It is an object of the present invention to provide a new solution to at least one of the above problems.
According to a first aspect of the present invention, a detection method of a piezoelectric glue spraying system is provided, the piezoelectric glue spraying system includes a piezoelectric ceramic, a lever, a spring assembly, a striker and a nozzle, the piezoelectric ceramic is configured to deform according to a power supply voltage applied to the piezoelectric ceramic, so that the lever rotates; the spring assembly is arranged to drive the striker to move towards the nozzle direction according to the rotation;
the detection method comprises the following steps:
adjusting the power supply voltage to a set value;
acquiring the current acceleration of the lever when the power supply voltage is the set value;
and determining the current state of the piezoelectric glue spraying system according to the current acceleration.
Optionally, the detection method further includes:
detecting whether a self-checking event of the piezoelectric glue spraying system occurs or not;
and when the self-checking event occurs, executing the step of adjusting the power supply voltage to a set value.
Optionally, the self-test event includes any one or more of the following:
receiving a self-checking request triggered by an operator;
the piezoelectric glue spraying system is powered on;
the continuous working time of the piezoelectric glue spraying system exceeds the preset time;
reaching the preset self-checking time;
the piezoelectric glue spraying system continuously sprays glue for a time exceeding a preset time threshold value in a target time period.
Optionally, the self-checking event includes that the number of times of continuous glue spraying of the piezoelectric glue spraying system in a target time period exceeds a preset threshold, and the detection method further includes:
acquiring the acceleration of the lever in the target time period;
and determining the continuous glue spraying times according to the change rule of the acceleration in the target time period.
Optionally, the determining the current state of the piezoelectric glue spraying system according to the current acceleration includes:
and under the condition that the current acceleration is smaller than or equal to a preset reference acceleration, judging that the current state is invalid.
Optionally, the detection method further includes:
and under the condition that the current state is invalid, controlling the piezoelectric glue spraying system to give an alarm to remind an operator.
Optionally, the detection method further includes:
and adjusting the position of the nozzle according to the current acceleration.
According to a second aspect of the present invention, there is provided a detection apparatus for a piezoelectric glue spraying system, the piezoelectric glue spraying system comprising a piezoelectric ceramic, a lever, a spring assembly, a striker and a nozzle, the piezoelectric ceramic being configured to deform according to a supply voltage applied to the piezoelectric ceramic, so that the lever rotates; the spring assembly is arranged to drive the striker to move towards the nozzle direction according to the rotation;
the detection device includes:
the voltage adjusting module is used for adjusting the power supply voltage to a set value;
the acceleration detection module is used for acquiring the current acceleration of the lever when the power supply voltage is the set value;
and the state determining module is used for determining the current state of the piezoelectric glue spraying system according to the current acceleration.
Optionally, the state determination module is further configured to: and under the condition that the current acceleration is smaller than or equal to a preset reference acceleration, judging that the current state is invalid.
Optionally, the detection apparatus further includes:
and the position adjusting module is used for adjusting the position of the nozzle according to the current acceleration.
The piezoelectric glue spraying system has the beneficial effects that through the embodiment of the invention, the current state of the piezoelectric glue spraying system is determined according to the current acceleration of the lever when the power supply voltage applied to the piezoelectric ceramic is a set value, so that the problem of part failure can be found in time, operators can eliminate the problem in time, and the production yield of the piezoelectric glue spraying system can be improved.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a schematic structural diagram of a piezoelectric glue-spraying system according to an embodiment of the invention;
FIG. 2 is a schematic flow chart illustrating a detection method of a piezoelectric glue-spraying system according to an embodiment of the invention;
FIG. 3 is a schematic force diagram of a piezoelectric glue-spraying system according to an embodiment of the invention;
FIG. 4 is a block diagram of a detecting device of a piezoelectric glue-spraying system according to a first embodiment of the invention;
fig. 5 is a block schematic diagram of a detecting device of a piezoelectric glue-spraying system according to a second embodiment of the invention.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
< piezoelectric glue spraying System >
Fig. 1 is a schematic structural diagram of a piezoelectric glue-spraying system according to an embodiment of the invention.
As shown in fig. 1, the piezoelectric glue spraying system includes a piezoelectric ceramic 1, a lever 2, a spring assembly 3, a striker 4 and a nozzle 5, the piezoelectric ceramic 1 is configured to deform according to a power supply voltage, so that the lever 2 rotates; the spring assembly 3 is arranged to bring the striker 4 into impact with the nozzle 5 upon rotation of the lever 2.
Specifically, in the normal working process of the piezoelectric glue spraying system, a power supply voltage is applied to the piezoelectric ceramics 1, and the piezoelectric ceramics 1 deforms and extends according to the power supply voltage, so that the lever 2 rotates. During the rotation of the lever 2, the spring assembly 3 deforms, and a mechanical force is generated to drive the striker 4 to strike the nozzle 5, so that the glue 6 is sprayed out of the nozzle 5. The glue line is cut off to effect a valve closing action when the needle of the striker 4 strikes the nozzle 5. When the power supply voltage is stopped being applied to the piezoelectric ceramic 1, the piezoelectric ceramic 1 is reset and returns to the initial state, the lever 2 and the firing pin 4 are reset under the action of the spring assembly 3, and the piezoelectric glue spraying system is filled with glue 6.
< method >
Fig. 2 is a schematic flow chart illustrating a detection method of a piezoelectric glue spraying system according to an embodiment of the present invention.
The detection method may include steps S2100 to S2300 shown in fig. 2:
in step S2100, the power supply voltage is adjusted to a set value.
The setting value may be preset according to an application scenario or a specific requirement. The set value may be less than or equal to the maximum value of the power supply voltage applied to the piezoelectric ceramics 1 when the piezoelectric glue-spraying system is in normal operation.
For example, the set value may be half the maximum value of the supply voltage, i.e. if the maximum voltage is 120V, the set value may be 60. As another example, the set value may be 99% of the maximum value of the supply voltage, i.e. if the maximum voltage is 120V, the set value may be 118.8V.
In step S2200, the current acceleration of the lever when the power supply voltage is the set value is obtained.
Specifically, in the process that the power supply voltage applied to the piezoelectric ceramic 1 is a set value, the piezoelectric ceramic 1 is charged first, and in the charging process, the piezoelectric ceramic 1 deforms to drive the lever 2 to rotate. After the piezoelectric ceramic 1 is charged, the length of the piezoelectric ceramic 1 is kept unchanged, and the lever 2 also keeps rotating at a rotating angle and does not rotate any more. The current acceleration may be an acceleration when the lever 2 is rotated to a steady state where the rotation angle is not changed any more.
In one example, the current acceleration may be a maximum acceleration obtained during a period in which the power supply voltage applied to the piezoelectric ceramic 1 is a set value.
In an embodiment of the present invention, the current acceleration of the lever may be detected by controlling an acceleration sensor provided on the lever 2, and the detected current acceleration may be transmitted to the control device executing the embodiment of the present invention through a transmission line such as an I2C (Inter-Integrated Circuit) bus or an SPI (Serial Peripheral Interface) bus.
The stress schematic diagram of the piezoelectric glue spraying system can be as shown in fig. 3, when piezoelectric ceramic 1 deforms and extends according to the power supply voltage, an actuating force is generated to act on a point a of the lever 2, the lever 2 is stressed to rotate and is transmitted to a point B through acceleration, the force of the point B acts on the spring assembly 3, so that the spring assembly 3 deforms, elastic force is generated to act on the point B of the lever 2, and the firing pin 4 is driven to strike the nozzle 5.
In one embodiment of the present invention, the acceleration sensor may be disposed between the points a and B of the lever 2.
And step S2300, determining the current state of the piezoelectric glue spraying system according to the current acceleration.
In one embodiment of the present invention, the current state includes: the piezoelectric glue spraying system can accurately spray the effective state of glue and the piezoelectric glue spraying system cannot accurately spray the failure state of glue.
The reason for causing the current state of the piezoelectric glue spraying system to be a failure state at least can comprise any one or more of the following:
the spring assembly 3 becomes less rigid due to mechanical fatigue; the rigidity of the piezoelectric ceramic 1 becomes small; striker 4 fails due to wear; failure of the seal of the nozzle 5; improper positioning of the nozzle 5 results in improper tightness of the nozzle 5 to the striker 4.
Because the processing yield of the piezoelectric glue spraying system can be ensured only in an effective state, the embodiment of the invention determines whether the current state of the piezoelectric glue spraying system is effective by detecting the current acceleration of the lever 2 when the power supply voltage applied to the piezoelectric ceramic 1 is a set value.
In one embodiment of the invention, the set value may be set to 50% of the maximum voltage, so that the striker 4 has not yet hit the nozzle 5 while the power supply voltage is the set value. On the basis, the current acceleration and the preset reference acceleration can be compared, and the current state is judged to be invalid under the condition that the current acceleration is smaller than or equal to the reference acceleration.
On this basis, the detection method may further include: under the condition that the current state is failure, the piezoelectric glue spraying system is controlled to give an alarm to remind an operator to replace parts.
Specifically, the manner for controlling the piezoelectric glue spraying system to give an alarm may include: controlling a buzzer of the piezoelectric glue spraying system to sound and/or controlling a light-emitting device of the piezoelectric glue spraying system to emit light.
According to the detection method provided by the embodiment of the invention, the current state of the piezoelectric glue spraying system is determined according to the current acceleration of the lever when the power supply voltage applied to the piezoelectric ceramic is a set value, so that the problem of part failure can be found in time, and an operator can remove the failure in time, and thus, the production yield of the piezoelectric glue spraying system can be improved.
Further, the reference acceleration may include a first reference acceleration and a second reference acceleration, wherein the second reference acceleration is greater than the first reference acceleration. And under the condition that the current acceleration is smaller than or equal to the second reference acceleration and larger than the first reference acceleration, judging that the current state is a first failure state. The reason why the present state of the piezoelectric glue-jet system is the first failure state may include that the piezoelectric ceramics 1 becomes less rigid.
When the current acceleration is less than or equal to the first reference acceleration, determining that the current state is the second failure state, and causing the current state of the piezoelectric glue spraying system to be the second failure state may include: the spring assembly 3 becomes less rigid due to mechanical fatigue; striker 4 fails due to wear; the sealing of the nozzle 5 fails.
Therefore, according to the comparison result of the current acceleration, the first reference acceleration and the second reference acceleration, the parts which are possibly out of work in the piezoelectric glue spraying system can be determined, so that an operator can accurately check out the out-of-work parts for replacement, and the maintenance efficiency of the piezoelectric glue spraying system is improved.
In one embodiment of the invention, the set value may be set to half the maximum voltage so that the striker 4 has not yet hit the nozzle 5 when the supply voltage is the set value. On the basis, the current acceleration and the preset reference acceleration can be compared, and the current state is judged to be invalid under the condition that the current acceleration is smaller than or equal to the reference acceleration.
In an embodiment of the present invention, the detection method may further include: and adjusting the position of the nozzle according to the current acceleration.
Specifically, the set value may be set to 99% of the maximum voltage, and when the striker 4 is fixed, the nozzle 5 is screwed so that the nozzle 5 moves toward the tip of the striker 4 until the current acceleration reaches a predetermined value, that is, the current state is adjusted from the disabled state to the enabled state, which indicates that the striker 4 has contacted the nozzle 5.
At this time, the power supply voltage may be further finely adjusted, for example, the set value may be adjusted to 98% of the maximum voltage, and if the current acceleration at this time is no longer the set value, the positional accuracy of the nozzle 5 at this time is 1% of the moving stroke of the striker 4.
In one example, the action of adjusting the position of the nozzle may be performed by an operator, and the piezoelectric glue-spraying system may further include a display device for displaying the current acceleration to the operator so that the operator may adjust the position of the nozzle according to the current acceleration.
In another example, the action of adjusting the position of the nozzle can also be performed by a corresponding screwing device.
In the embodiment, the position of the nozzle is adjusted according to the current acceleration, so that the nozzle can be accurately and quickly adjusted to the optimal position.
In an embodiment of the present invention, the detection method may further include:
detecting whether a self-detection event of the piezoelectric glue spraying system occurs or not; when the self-test event occurs, steps S2100 to S2300 of the embodiment of the present invention are performed.
Because the viscosity and other parameters of different glues are different, if the piezoelectric glue spraying system detects the occurrence of a self-detection event in the glue spraying process, in order to avoid the influence of the internal glue on the detection result of the current state, the glue in the piezoelectric glue spraying system can be discharged first, and then the steps S2100 to S2300 of the embodiment of the present invention are performed.
The self-test event may include any one or more of:
receiving a self-checking request triggered by an operator;
powering up the piezoelectric glue spraying system;
the continuous working time of the piezoelectric glue spraying system exceeds the preset time;
reaching the preset self-checking time;
the continuous glue spraying times of the piezoelectric glue spraying system in the target time period exceed a preset time threshold.
In embodiments where the self-test event comprises receipt of an operator-triggered self-test request, the piezoelectric glue-dispensing system may comprise a button, either a physical button or a virtual button in a touch panel of the piezoelectric glue-dispensing system, for triggering the self-test request. When the operator clicks this button, a self-test request may be triggered.
In the embodiment where the self-checking event includes powering on the piezoelectric glue-spraying system, steps S2100 to S2300 of the embodiment of the present invention may be automatically executed each time the piezoelectric glue-spraying system is powered on and started.
In the embodiment where the self-checking event includes that the continuous operating time of the piezoelectric glue spraying system exceeds the preset time, the continuous operating time may be the operating time of the piezoelectric glue spraying system since power-on, or the operating time of the piezoelectric glue spraying system since last self-checking.
In the embodiment where the self-checking event includes reaching the preset self-checking time, the self-checking time of the piezoelectric glue spraying system may be set in advance according to an application scenario or a specific system. For example, the self-test time may be set to 8 points per day, 8 points per monday, or 8 points per month No. 1.
In an embodiment where the self-checking event includes that the number of continuous glue spraying times of the piezoelectric glue spraying system in a target time period exceeds a preset number threshold, the target time period may be a time period after the current power-on of the piezoelectric glue spraying system, or a time period after the last self-checking of the piezoelectric glue spraying system. On the basis of this embodiment, the detection method may further include:
and acquiring the acceleration of the lever in a target time period, and determining the continuous glue spraying times according to the change rule of the acceleration in the target time period.
For example, a graph may be drawn with the detection time as an abscissa and the acceleration as an ordinate, and the number of peaks or valleys in the graph may be determined as the number of continuous glue-spraying times.
The embodiment can accurately count the actual dispensing times of the piezoelectric glue spraying system in the target time period, and provide effective prompt information for maintaining vulnerable parts in the piezoelectric glue spraying system.
< apparatus >
Corresponding to the method, the invention also provides a detection device of the piezoelectric glue spraying system. The piezoelectric glue spraying system comprises piezoelectric ceramics, a lever, a spring assembly, a firing pin and a nozzle, wherein the piezoelectric ceramics are set to deform according to power supply voltage applied to the piezoelectric ceramics so as to enable the lever to rotate; the spring assembly is configured to rotate the striker to move in a direction toward the nozzle.
As shown in fig. 4, the detection apparatus 4000 may include a voltage adjustment module 4100, an acceleration acquisition module 4200, and a state determination module 4300. The voltage adjusting module 4100 is configured to adjust a power supply voltage to a set value; the acceleration obtaining module 4200 is configured to obtain a current acceleration of the lever when the power supply voltage is a set value; the state determination module 4300 is configured to determine a current state of the piezoelectric glue spraying system according to the current acceleration.
In one embodiment of the present invention, the status determination module 4300 may be further configured to: and under the condition that the current acceleration is less than or equal to the preset reference acceleration, judging that the current state is invalid.
In an embodiment of the present invention, as shown in fig. 5, the detecting apparatus 4000 may further include: the alarm module 5100 is configured to control the piezoelectric glue spraying system to send an alarm to remind an operator when the current state is failure.
In an embodiment of the present invention, as shown in fig. 5, the detecting apparatus 4000 may further include: the event detection module 5200 is configured to detect whether a self-detection event of the piezoelectric glue-spraying system occurs; the voltage adjusting module 4100 is configured to adjust the power supply voltage to a set value if the detection result of the event detecting module 5200 is yes.
In one embodiment of the invention, the self-test event may include any one or more of:
receiving a self-checking request triggered by an operator;
powering up the piezoelectric glue spraying system;
the continuous working time of the piezoelectric glue spraying system exceeds the preset time;
reaching the preset self-checking time;
the piezoelectric glue spraying system continuously sprays glue for a time exceeding a preset time threshold value in a target time period.
In an embodiment of the present invention, the self-checking event includes that the number of continuous glue spraying times of the piezoelectric glue spraying system in the target time period exceeds a preset number threshold, and the detecting device 4000 may further include:
a module for acquiring the acceleration of the lever in a target time period;
and the module is used for determining the continuous glue spraying times according to the change rule of the acceleration in the target time period.
In an embodiment of the present invention, as shown in fig. 5, the detecting apparatus 4000 may further include: the position adjusting module 5300 is configured to adjust a position of the nozzle according to the current acceleration.
The above embodiments mainly focus on differences from other embodiments, but it should be clear to those skilled in the art that the above embodiments can be used alone or in combination with each other as needed.
The embodiments in the present disclosure are described in a progressive manner, and the same and similar parts among the embodiments can be referred to each other, and each embodiment focuses on the differences from the other embodiments, but it should be clear to those skilled in the art that the embodiments described above can be used alone or in combination with each other as needed. In addition, for the device embodiment, since it corresponds to the method embodiment, the description is relatively simple, and for relevant points, refer to the description of the corresponding parts of the method embodiment. The system embodiments described above are merely illustrative, in that modules illustrated as separate components may or may not be physically separate.
The present invention may be a system, method and/or computer program product. The computer program product may include a computer-readable storage medium having computer-readable program instructions embodied therewith for causing a processor to implement various aspects of the present invention.
The computer readable storage medium may be a tangible device that can hold and store the instructions for use by the instruction execution device. The computer readable storage medium may be, for example, but not limited to, an electronic memory device, a magnetic memory device, an optical memory device, an electromagnetic memory device, a semiconductor memory device, or any suitable combination of the foregoing. More specific examples (a non-exhaustive list) of the computer readable storage medium would include the following: a portable computer diskette, a hard disk, a Random Access Memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), a Static Random Access Memory (SRAM), a portable compact disc read-only memory (CD-ROM), a Digital Versatile Disc (DVD), a memory stick, a floppy disk, a mechanical coding device, such as punch cards or in-groove projection structures having instructions stored thereon, and any suitable combination of the foregoing. Computer-readable storage media as used herein is not to be construed as transitory signals per se, such as radio waves or other freely propagating electromagnetic waves, electromagnetic waves propagating through a waveguide or other transmission medium (e.g., optical pulses through a fiber optic cable), or electrical signals transmitted through electrical wires.
The computer-readable program instructions described herein may be downloaded from a computer-readable storage medium to a respective computing/processing device, or to an external computer or external storage device via a network, such as the internet, a local area network, a wide area network, and/or a wireless network. The network may include copper transmission cables, fiber optic transmission, wireless transmission, routers, firewalls, switches, gateway computers and/or border servers. The network adapter card or network interface in each computing/processing device receives computer-readable program instructions from the network and forwards the computer-readable program instructions for storage in a computer-readable storage medium in the respective computing/processing device.
The computer program instructions for carrying out operations of the present invention may be assembly instructions, Instruction Set Architecture (ISA) instructions, machine-related instructions, microcode, firmware instructions, state setting data, or source code or object code written in any combination of one or more programming languages, including an object oriented programming language such as python, java, C + + or the like and conventional procedural programming languages, such as the "C" programming language or similar programming languages. The computer-readable program instructions may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server. In the case of a remote computer, the remote computer may be connected to the user's computer through any type of network, including a Local Area Network (LAN) or a Wide Area Network (WAN), or the connection may be made to an external computer (for example, through the Internet using an Internet service provider). In some embodiments, aspects of the present invention are implemented by personalizing an electronic circuit, such as a programmable logic circuit, a Field Programmable Gate Array (FPGA), or a Programmable Logic Array (PLA), with state information of computer-readable program instructions, which can execute the computer-readable program instructions.
Aspects of the present invention are described herein with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems) and computer program products according to embodiments of the invention. It will be understood that each block of the flowchart illustrations and/or block diagrams, and combinations of blocks in the flowchart illustrations and/or block diagrams, can be implemented by computer-readable program instructions.
These computer-readable program instructions may be provided to a processor of a general purpose computer, special purpose computer, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks. These computer-readable program instructions may also be stored in a computer-readable storage medium that can direct a computer, programmable data processing apparatus, and/or other devices to function in a particular manner, such that the computer-readable medium storing the instructions comprises an article of manufacture including instructions which implement the function/act specified in the flowchart and/or block diagram block or blocks.
The computer readable program instructions may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the instructions which execute on the computer, other programmable apparatus or other devices implement the functions/acts specified in the flowchart and/or block diagram block or blocks.
The flowchart and block diagrams in the figures illustrate the architecture, functionality, and operation of possible implementations of systems, methods and computer program products according to various embodiments of the present invention. In this regard, each block in the flowchart or block diagrams may represent a module, segment, or portion of instructions, which comprises one or more executable instructions for implementing the specified logical function(s). In some alternative implementations, the functions noted in the block may occur out of the order noted in the figures. For example, two blocks shown in succession may, in fact, be executed substantially concurrently, or the blocks may sometimes be executed in the reverse order, depending upon the functionality involved. It will also be noted that each block of the block diagrams and/or flowchart illustration, and combinations of blocks in the block diagrams and/or flowchart illustration, can be implemented by special purpose hardware-based systems which perform the specified functions or acts, or combinations of special purpose hardware and computer instructions. It is well known to those skilled in the art that implementation by hardware, by software, and by a combination of software and hardware are equivalent.
Having described embodiments of the present invention, the foregoing description is intended to be exemplary, not exhaustive, and not limited to the embodiments disclosed. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments. The terminology used herein is chosen in order to best explain the principles of the embodiments, the practical application, or improvements made to the technology in the marketplace, or to enable others of ordinary skill in the art to understand the embodiments disclosed herein. The scope of the invention is defined by the appended claims.
Claims (10)
1. The detection method of the piezoelectric glue spraying system is characterized in that the piezoelectric glue spraying system comprises piezoelectric ceramics, a lever, a spring assembly, a firing pin and a nozzle, wherein the piezoelectric ceramics are set to deform according to a power supply voltage applied to the piezoelectric ceramics, so that the lever rotates; the spring assembly is arranged to drive the striker to move towards the nozzle direction according to the rotation;
the detection method comprises the following steps:
adjusting the power supply voltage to a set value;
acquiring the current acceleration of the lever when the power supply voltage is the set value;
comparing the current acceleration with a first reference acceleration and a second reference acceleration, and determining the current state of the piezoelectric glue spraying system according to the comparison result; wherein the current state is an active state or a failure state.
2. The detection method according to claim 1, further comprising:
detecting whether a self-checking event of the piezoelectric glue spraying system occurs or not;
and when the self-checking event occurs, executing the step of adjusting the power supply voltage to a set value.
3. A method of testing according to claim 2, wherein the self-test event comprises any one or more of:
receiving a self-checking request triggered by an operator;
the piezoelectric glue spraying system is powered on;
the continuous working time of the piezoelectric glue spraying system exceeds the preset time;
reaching the preset self-checking time;
the piezoelectric glue spraying system continuously sprays glue for a time exceeding a preset time threshold value in a target time period.
4. The method of claim 3, wherein the self-test event comprises the number of consecutive glue shots of the piezo glue system within a target time period exceeding a preset number threshold, the method further comprising:
acquiring the acceleration of the lever in the target time period;
and determining the continuous glue spraying times according to the change rule of the acceleration in the target time period.
5. The method for detecting according to claim 1, wherein said determining a current state of said piezo-electric glue-jet system according to said current acceleration comprises:
and under the condition that the current acceleration is smaller than or equal to a preset reference acceleration, judging that the current state is invalid.
6. The detection method according to claim 5, further comprising:
and under the condition that the current state is invalid, controlling the piezoelectric glue spraying system to give an alarm to remind an operator.
7. The detection method according to claim 1, further comprising:
and adjusting the position of the nozzle according to the current acceleration.
8. The detection device of the piezoelectric glue spraying system is characterized in that the piezoelectric glue spraying system comprises piezoelectric ceramics, a lever, a spring assembly, a firing pin and a nozzle, wherein the piezoelectric ceramics are arranged to deform according to a power supply voltage applied to the piezoelectric ceramics, so that the lever rotates; the spring assembly is arranged to drive the striker to move towards the nozzle direction according to the rotation;
the detection device includes:
the voltage adjusting module is used for adjusting the power supply voltage to a set value;
the acceleration acquisition module is used for acquiring the current acceleration of the lever when the power supply voltage is the set value;
the state determining module is used for comparing the current acceleration with a first reference acceleration and a second reference acceleration and determining the current state of the piezoelectric glue spraying system according to a comparison result; wherein the current state is an active state or a failure state.
9. The detection apparatus of claim 8, wherein the state determination module is further configured to: and under the condition that the current acceleration is smaller than or equal to a preset reference acceleration, judging that the current state is invalid.
10. The detection device according to claim 8, further comprising:
and the position adjusting module is used for adjusting the position of the nozzle according to the current acceleration.
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