A closed-loop static electricity monitoring and elimination system

Abstract

A closed-loop static electricity monitoring and elimination system belongs to the field of static electricity elimination. Along the running route of the product to be eliminated, above the guide rail, a first static electricity monitoring device, a first static electricity elimination device, a second static electricity monitoring device, a second static electricity elimination device and a third static electricity monitoring device are sequentially arranged; the first static electricity monitoring device monitors the initial static electricity voltage of the product to be eliminated; the first static electricity elimination device performs the first static electricity elimination on the product to be eliminated; the second static electricity monitoring device monitors the residual static electricity voltage of the product to be eliminated; the second static electricity elimination device performs the second static electricity elimination on the product to be eliminated; the third static electricity monitoring device monitors the residual static electricity voltage of the product to be eliminated. By setting an static electricity monitoring device at the front and rear positions of each static electricity elimination device, a closed-loop feedback mode is adopted to automatically perform static electricity monitoring and static electricity elimination functions on the product to be eliminated; the static electricity elimination ability of the static electricity elimination device can also be monitored or evaluated.

Description

Technical Field

[0001] The invention belongs to the field of static electricity elimination, and in particular relates to an active static electricity elimination system. Background Art

[0002] As the requirements for electrostatic protection in production lines continue to increase, online static monitoring of products and immediate elimination are becoming more and more standard requirements.

[0003] For example, on an LCD panel production line, the same type (same structural size) of LCD panels will flow through various process operation devices. In order to promptly eliminate static electricity on the LCD panels on the production line, it is necessary to conduct online static electricity monitoring on the products and eliminate it immediately.

[0004] There are many brands of instruments for static electricity monitoring on the market, such as handheld static voltage monitoring meters, static electricity sensors, etc. There are also many devices that can be used to monitor and feedback the size of the static charge on the surface of objects, and to eliminate static electricity on the surface of objects, such as various types of ion blowers, ion rods and other products.

[0005] Nowadays, computer LAN networking technology has become very mature. Various industrial computers, computers, wireless communication modules, smart phones, etc. have network connection capabilities. By setting different IP addresses for each device, various wired or wireless LAN networks can be easily established.

[0006] However, the existing instruments for static monitoring and the equipment for eliminating static electricity on the surface of objects must be connected or the monitoring signals can be transmitted through the dedicated signal transmission line configured by the manufacturer (usually a dedicated coaxial shielded signal line). Without a universal, convenient network connection method and a unified, standard data exchange method, it is very difficult to establish a static monitoring signal transmission system or a static monitoring-static elimination system at the production site. The workload of laying various signal lines and control cables on site is huge, and the one-time investment cost is relatively large.

[0007] At the same time, due to the differences in manufacturing processes or monitoring methods, the comparison of the monitoring effects of two existing static electricity monitoring instruments or the static electricity elimination effects of two surface static electricity elimination devices can usually only be carried out by the equipment manufacturers, and it is usually impossible to carry out at the production site. This also brings great inconvenience to the users of the static electricity elimination devices. The monitoring effect or elimination effect of the on-site static electricity monitoring device or static electricity elimination device cannot be monitored or compared for the users, and it is also inconvenient for the users to judge whether the functions of the installed static electricity monitoring device or static electricity elimination device are partially lost or the capacity is reduced at the production site. Summary of the invention

[0008] The technical problem to be solved by the present invention is to provide a closed-loop static monitoring and elimination system. It sets an independent IP address for each static monitoring device or static elimination device, and establishes a corresponding association relationship between each static monitoring device and static elimination device through the IP address; by setting an static monitoring device in front of and behind the static elimination device, respectively, a closed-loop feedback mode is adopted, and an static sensor device and a static elimination device are linked and controlled one by one, and the static monitoring and static elimination functions are automatically performed on the object to be de-electrified; the de-electrification ability of the static elimination device can also be monitored or judged; several static monitoring devices are set at different vertical distances, and the actual measured values ​​of each static monitoring device on the same charged object are compared to judge and verify the monitoring accuracy of multiple static monitoring devices under the same static voltage at multiple different monitoring distances, so as to compare and judge the performance of each static monitoring device.

[0009] The technical solution of the present invention is to provide a closed-loop static electricity monitoring and elimination system, including a static electricity elimination device, a static electricity monitoring device and a product object to be eliminated that is movable on a guide rail, and is characterized in that:

[0010] Along the running route and running direction of the product object to be de-electrified on the guide rail, a first static electricity monitoring device, a first static electricity eliminator, a second static electricity monitoring device, a second static electricity eliminator and a third static electricity monitoring device are sequentially arranged above the guide rail;

[0011] The first static electricity monitoring device is used to monitor the initial static voltage of the product object to be de-electrified;

[0012] The first static elimination device is used to perform the first static elimination on the product to be eliminated;

[0013] The second static electricity monitoring device is used to monitor the residual static voltage of the product object to be de-electrified;

[0014] The second static elimination device is used to perform static elimination again on the product to be eliminated;

[0015] The third static electricity monitoring device is used to monitor the residual static voltage of the product object to be de-electrified;

[0016] The first static electricity monitoring device is associated with the first static electricity elimination device to realize linkage control; the second static electricity monitoring device is associated with the second static electricity elimination device to realize linkage control;

[0017] When the product to be de-electrified moves along the guide rail, passing through the first electrostatic monitoring device to the third electrostatic monitoring device in sequence, the first electrostatic monitoring device controls the first electrostatic eliminator to output the first electrostatic elimination capability corresponding to the initial electrostatic voltage according to the initial electrostatic voltage of the product to be de-electrified, and the first electrostatic eliminator performs the first electrostatic elimination on the product to be de-electrified;

[0018] Then, the second static electricity monitoring device monitors the residual static voltage of the product object to be de-electrified after the first static electricity elimination. If the residual static voltage of the product object to be de-electrified is lower than the preset threshold, the second static electricity elimination device is on standby; if the residual static voltage of the product object to be de-electrified is higher than the preset threshold, the second static electricity monitoring device controls the second static electricity elimination device to output the static electricity elimination capacity corresponding to the residual static voltage value according to the residual static voltage of the product object to be de-electrified, and the second static electricity elimination device performs static electricity elimination on the product object to be de-electrified again;

[0019] Finally, the third static electricity monitoring device monitors whether the residual static voltage of the product to be de-electrified meets the process specification requirements. If the residual static voltage meets the requirements, it will be released. If it exceeds the standard, an alarm signal will be output.

[0020] Furthermore, the first, second and third electrostatic monitoring devices, and the first and second electrostatic elimination devices are respectively provided with independent IP addresses; the first, second and third electrostatic monitoring devices, and the first and second electrostatic elimination devices are respectively connected to the control computer through a wired or wireless local area network.

[0021] Specifically, the input ends of the first, second and third electrostatic monitoring devices are electrically connected to the output ends of the integrated power supply, and are communicatively connected to the control computer through the communication module in the integrated power supply; the power input ends of the first and second electrostatic elimination devices are correspondingly connected to the power output ends of the integrated power supply, respectively.

[0022] The closed-loop static electricity monitoring and elimination system of the present invention adopts a closed-loop feedback mode, and an static electricity sensor device and a static electricity elimination device are linked and controlled one by one, so as to automatically perform static electricity monitoring and static electricity elimination functions on the product object to be eliminated.

[0023] The closed-loop static electricity monitoring and elimination system of the present invention uses at least two static electricity monitorings on the product object to be eliminated, controls the ability of the next static electricity elimination according to the result of each static electricity monitoring, and automatically performs multiple static electricity eliminations on the product object to be eliminated.

[0024] The present invention also provides a static electricity monitoring and elimination system demonstration device which works on the principle of the above-mentioned closed-loop static electricity monitoring and elimination system, and is characterized by:

[0025] The electrostatic monitoring and elimination system demonstration device is also provided with a fourth electrostatic sensor device, a fifth electrostatic sensor device, a test plate that can be controlled to move along the guide rail, a high-voltage DC power supply, a guide rail PLC controller and an integrated power supply;

[0026] Wherein, the fourth electrostatic sensor device, the fifth electrostatic sensor device or the integrated power supply are respectively provided with independent IP addresses; the fourth electrostatic sensor device, the fifth electrostatic sensor device or the integrated power supply are respectively connected to the control computer via a wired or wireless local area network;

[0027] The control computer is an industrial touch screen computer, in which system monitoring software is installed to display the working status of the equipment online and monitor the working status of each electrostatic sensor device and each electrostatic elimination device;

[0028] The fourth electrostatic sensor device and the fifth electrostatic sensor device are installed at different vertical heights from the test plate, so as to verify the monitoring accuracy of multiple electrostatic sensors at the same electrostatic voltage or the consistency of the monitored electrostatic voltage values ​​at different monitoring distances under the premise that the electrostatic voltage values ​​on the surface of the target object are the same;

[0029] The test plate is used to carry the product object to be de-energized. The test plate can reciprocate along the guide rail, stay at a certain position of the guide rail, or stay at a predetermined position for a preset time under the control of the guide rail PLC controller;

[0030] The high-voltage DC power supply is used to apply an initial static voltage to the product object to be de-energized that moves to the head end or the end end of the guide rail; the initial static voltage includes a positive voltage or a negative voltage;

[0031] The guide rail PLC controller is used to control the movement speed or movement range of the test plate on the guide rail, so that the test plate can move to a certain set position, and after being stationary at the set position for a preset time, continue to move to other set positions;

[0032] The integrated power supply is used to supply power to each electrostatic sensor device and each electrostatic elimination device, and at the same time transmits the working status and working parameters of each device to the system monitoring software in the control computer in real time through a wired or wireless network.

[0033] Specifically, the vertical installation heights of the fourth electrostatic sensor device and the fifth electrostatic sensor device from the test flat plate are not equal to the vertical installation heights of the first to third electrostatic sensor devices from the test flat plate.

[0034] The closed-loop static electricity monitoring and elimination system described therein operates as follows:

[0035] a) A positive and negative high-voltage conductive plug are respectively arranged at the head and the end of the guide rail, and the positive and negative high-voltage conductive plugs are respectively connected to the positive and negative high-voltage output terminals of the high-voltage DC power supply, so as to apply positive and negative voltages to the test plate moved to the head and the end of the guide rail; at the same time, an electrostatic monitoring device is respectively arranged above the head and the end of the guide rail;

[0036] b) setting a plurality of predetermined positions along the length direction of the guide rail, respectively setting two sets of static elimination devices above two of the predetermined positions, and setting a static monitoring device above the front and rear predetermined positions of each set of static elimination devices;

[0037] c) an electrostatic monitoring device is respectively arranged above at least two adjacent predetermined positions along the length direction of the guide rail, and the two electrostatic monitoring devices are at different vertical installation heights from the test plate;

[0038] d) Establishing corresponding associations between each static monitoring device and static eliminator through IP addresses in the system monitoring software; and establishing corresponding control associations between the static monitoring devices located in front of and behind each set of static eliminator and the corresponding static eliminator; the control associations at least include: along the moving direction of the test plate, the static monitoring output signal of the static monitoring device located in front of each static eliminator is used to control the operation start control of the static eliminator located behind the static monitoring device;

[0039] e) The guide rail PLC controller controls the movement of the test plate; when the system monitoring software is initially running, the test plate is at the first position at the head end of the guide rail, and the test plate is in electrical contact with the positive high-voltage output terminal of the high-voltage DC power supply, so that the test plate is positively charged;

[0040] The head-end electrostatic sensor located at the first position of the head end of the guide rail monitors the static voltage on the flat panel and transmits the monitoring signal to the industrial touch screen computer, and the static voltage monitored by the electrostatic sensor is displayed on the monitoring software; if the monitored static voltage exceeds the set alarm threshold, the head-end electrostatic sensor outputs a red alarm signal;

[0041] f) The guide rail PLC controller controls the movement of the test plate, passing through the second position, the third position, and the fourth position in sequence. The electrostatic sensor devices arranged at these positions respectively monitor the static voltage on the test plate at their corresponding positions, and transmit the monitoring signal to the industrial touch screen computer. If the static voltage monitored by the electrostatic sensor at a certain position exceeds the set alarm threshold, the corresponding electrostatic sensor outputs a red alarm signal;

[0042] g) When the test plate moves to the fourth position, because the static voltage monitored by the corresponding electrostatic sensor device exceeds the threshold value and has transmitted the alarm signal to the industrial touch screen computer, and there is linkage control between the electrostatic sensor device and the first electrostatic eliminator, the industrial touch screen computer starts the first electrostatic eliminator to eliminate the static charge on the test plate;

[0043] h) When the test plate moves to the sixth position, the first static eliminator has eliminated the static charge on the test plate, so the static sensing device corresponding to the position cannot detect the static electricity on the plate or the static voltage value is lower than the set static threshold;

[0044] i) When the test plate moves to the eighth position, it is in electrical contact with the negative high-voltage output terminal of the high-voltage DC power supply, so that the test plate is charged with negative static electricity; the static electricity sensor device corresponding to the position detects that the test plate is charged with negative static electricity, and the static electricity exceeds the set threshold, so an alarm signal is transmitted to the industrial touch screen computer, and the test plate returns under the control of the guide rail PLC controller;

[0045] j) When the test plate with negative static electricity returns to the seventh position, because the corresponding electrostatic sensor device detects that the static voltage exceeds the threshold value at the previous position and has transmitted the alarm signal to the industrial touch screen computer, and the electrostatic sensor device 6 is linked with the second electrostatic elimination device, the monitoring system starts the second electrostatic elimination device to eliminate the negative charge on the test plate.

[0046] k) After the test plate is de-charged by the ion blower, it moves to the sixth position, and the corresponding electrostatic sensor device detects that the negative charge on the test plate has been eliminated;

[0047] l) Subsequently, the test plate passes through the fifth, fourth, third and second positions in sequence, and after staying at each position for a set time, returns to the initial first position.

[0048] Furthermore, the electrostatic monitoring and elimination system demonstration device monitors the electrostatic voltage of the test plate by setting at least two electrostatic monitoring devices with unequal vertical installation heights from the test plate on the moving path of the test plate, and by comparing the measured values ​​of each electrostatic monitoring device, the monitoring accuracy of multiple electrostatic monitoring devices under the same electrostatic voltage at multiple different monitoring distances is judged and verified;

[0049] The static electricity monitoring and elimination system demonstration device is provided with at least two sets of static electricity elimination devices on the moving path of the test plate, and the static electricity elimination performance of various static electricity elimination devices or sets of static electricity elimination devices is evaluated and verified by comparing their respective static electricity elimination effects;

[0050] The electrostatic monitoring and elimination system demonstration device, as a electrostatic monitoring and elimination demonstration device, plays a role in technology demonstration.

[0051] Specifically, the test plate comprises two upper and lower square stainless steel metal plates of the same structural size, the lower plate is mounted and fixed on the sliding platform of the guide rail, and the upper and lower plates are insulated, isolated and supported by polytetrafluoroethylene cylinders;

[0052] At the bottom of the upper plate, at the front and rear ends of the center line of the test plate in the moving direction, a conductive end is fixed, and the conductive end is a hollow columnar structure, which is used to contact the positive and negative high-voltage conductive plugs arranged at the head and end of the guide rail;

[0053] The positive and negative high-voltage conductive plugs are respectively arranged at the head and the end of the guide rail, and are respectively electrically connected to the positive and negative high-voltage output terminals of the high-voltage DC power supply.

[0054] Compared with the prior art, the advantages of the present invention are:

[0055] 1. Set an independent IP address for each static monitoring device or static elimination device, and establish a corresponding association between each static monitoring device and static elimination device through the IP address, so that each system component has the networking capability, which is convenient for building a static monitoring and elimination system that can meet customer needs by establishing a local area network at the production site, and the system has good scalability;

[0056] 2. Adopting the closed-loop feedback mode, the static sensing device and the static eliminator implement linkage control one by one, automatically monitor and eliminate static electricity for the product to be eliminated; it can also monitor or judge the static elimination ability of the static eliminator, enhance the self-judgment ability and static elimination effect of the entire static monitoring and elimination system, and help users to judge or judge whether the functions of each monitoring and static elimination component are normal, reduce the workload of the manufacturer's on-site service, and shorten the time or cycle of on-site problem solving and fault handling;

[0057] 3. By setting up several electrostatic monitoring devices at different vertical distances and comparing the measured values ​​of each electrostatic monitoring device on the same charged object, the monitoring accuracy of multiple electrostatic monitoring devices under the same static voltage at multiple different monitoring distances can be judged and verified, which is helpful to compare and judge the performance of each electrostatic monitoring device;

[0058] 4. The logic control mode of multiple static electricity monitoring and multiple static electricity elimination is adopted. For the product objects to be de-electrified that have been de-electrified, the static voltage is monitored again. According to the results of each static electricity monitoring, it is automatically determined whether static electricity elimination is needed again, and the size of the next static electricity elimination capacity is automatically controlled. Multiple static electricity elimination is performed on the product objects to be de-electrified, realizing the true meaning of "intelligent automatic monitoring and static electricity elimination". BRIEF DESCRIPTION OF THE DRAWINGS

[0059] Figure 1 It is a basic structural diagram of the closed-loop static electricity monitoring and elimination system of the present invention;

[0060] Figure 2 It is a schematic diagram of the electrical principle of the closed-loop static electricity monitoring and elimination system of the present invention;

[0061] Figure 3 is a schematic diagram of the mechanical structure layout of the first embodiment of the present invention;

[0062] Figure 4 is a schematic diagram of the mechanical structure layout of the second embodiment of the present invention;

[0063] Figure 5 It is a schematic diagram of the mutual position relationship between the conductive end and the positive and negative high-voltage conductive plugs;

[0064] Figure 6a is a schematic diagram of the logic control flow of the ion rod in the first embodiment;

[0065] Figure 6b is a schematic diagram of the logic control flow of the ion blower in the first embodiment;

[0066] Figure 7a is a schematic diagram of the logic control flow of the ion rod in the second embodiment;

[0067] Figure 7b is a schematic diagram of the logic control flow of the ion blower in the second embodiment;

[0068] Figure 8a is a schematic diagram of the logic control flow of the ion rod in the third embodiment;

[0069] Figure 8b It is a schematic diagram of the logic control flow of the ion blower in the third embodiment.

[0070] In the figure, 1 is a guide rail, 1a is the guide rail head end, 1b is the guide rail end, 1c is the guide rail sliding platform, 2 is a test plate, 2a and 2b are conductive ends, 3 is a first static electricity monitoring device, 4 is a first static electricity elimination device, 5 is a second static electricity monitoring device, 6 is a second static electricity elimination device, 7 is a third static electricity monitoring device, 8 is a control computer, 9 is a centralized power supply, 10 is a high-voltage DC power supply, and 11 is a guide rail PLC controller;

[0071] ① is position 1, ② is position 2, …, ⑧ is position 8, ⑨ is position 9;

[0072] CGQn is an electrostatic sensor numbered n (n is a natural number, the same below), XCQn is an electrostatic eliminator numbered n (n is a natural number), +HV is a positive high-voltage conductive plug, and -HV is a negative high-voltage conductive plug. DETAILED DESCRIPTION

[0073] The present invention will be further described below in conjunction with the accompanying drawings and embodiments.

[0074] Figure 1 The technical solution of the present invention provides a closed-loop static electricity monitoring and elimination system, including a static electricity elimination device, a static electricity monitoring device and a product object to be eliminated (or a test plate, Figure 1 The invention is represented by reference numeral 2, the same below, and the invention is as follows:

[0075] Along the running route and running direction of the product object to be de-electrified on the guide rail 1, a first static electricity monitoring device 3, a first static electricity eliminator 4, a second static electricity monitoring device 5, a second static electricity eliminator 6 and a third static electricity monitoring device 7 are sequentially arranged above the guide rail;

[0076] The first static electricity monitoring device is used to monitor the initial static voltage of the product object 2 to be de-electrified;

[0077] The first static elimination device is used to perform the first static elimination on the product to be eliminated;

[0078] The second static electricity monitoring device is used to monitor the residual static voltage of the product object to be de-electrified;

[0079] The second static elimination device is used to perform static elimination again on the product to be eliminated;

[0080] The third static electricity monitoring device is used to monitor the residual static voltage of the product object to be de-electrified.

[0081] The first static electricity monitoring device is associated with the first static electricity elimination device to achieve linkage control;

[0082] The associated settings and linkage control here refer to: the signal output end of the first electrostatic monitoring device is correspondingly connected to the control signal input end of the first electrostatic elimination device, so that the first electrostatic monitoring device can control the start-up of the first electrostatic elimination device, or can control the start-up of the first electrostatic elimination device and control the size of the electrostatic elimination capacity output by the first electrostatic elimination device.

[0083] Similarly, the second static electricity monitoring device is associated with the second static electricity elimination device to achieve linkage control;

[0084] When the product object to be de-electrified (represented by the test plate 2 in the figure) moves along the guide rail (the figure gives an example of movement from right to left), it passes through the first electrostatic monitoring device to the third electrostatic monitoring device in sequence. The first electrostatic monitoring device controls the first electrostatic eliminator to output the first electrostatic elimination capability corresponding to the initial electrostatic voltage according to the initial electrostatic voltage of the product object to be de-electrified, and the first electrostatic eliminator performs the first electrostatic elimination on the product object to be de-electrified.

[0085] Subsequently, the second static electricity monitoring device monitors the residual static voltage of the product object to be de-electrified after the first static electricity elimination. If the residual static voltage of the product object to be de-electrified is lower than the preset threshold value, the second static electricity elimination device is on standby; if the residual static voltage of the product object to be de-electrified is higher than the preset threshold value, the second static electricity monitoring device controls the second static electricity elimination device to output the static electricity elimination capacity corresponding to the residual static voltage value according to the residual static voltage of the product object to be de-electrified, and the second static electricity elimination device performs static electricity elimination on the product object to be de-electrified again.

[0086] Finally, the third electrostatic monitoring device monitors whether the residual static voltage of the product to be de-electrified meets the process specification requirements. If the residual static voltage meets the requirements, it will be released. If it exceeds the standard, an alarm signal will be output, and an audible or optical alarm will be issued through an audible and optical alarm device.

[0087] Furthermore, the first, second and third electrostatic monitoring devices, and the first and second electrostatic elimination devices are respectively provided with independent IP addresses; the first, second and third electrostatic monitoring devices, and the first and second electrostatic elimination devices are respectively connected to the control computer via a wired or wireless local area network.

[0088] Furthermore, the static electricity monitoring device is a static electricity monitoring head and / or a static electricity sensor, and the first and second static electricity eliminating devices can be ion rods and / or ion blowers.

[0089] Figure 2 In the embodiment, the signal output ends of the first, second and third electrostatic monitoring devices 3, 5 and 7 are respectively connected to the control computer 8;

[0090] The power input terminals of the first and second static eliminators 4 and 6 are respectively connected to the power output terminals of the integrated power supply.

[0091] Through the setting of the above-mentioned module structure, two separate closed-loop feedback units are formed between the first electrostatic monitoring device and the first electrostatic elimination device, and between the second electrostatic monitoring device and the second electrostatic elimination device; and these two closed-loop feedback units constitute a complete closed-loop feedback system and working mode from the whole system.

[0092] The closed-loop static electricity monitoring and elimination system described in the technical solution of the present invention adopts a closed-loop feedback mode, and an static electricity sensor device and a static electricity elimination device are linked and controlled one by one, automatically performing static electricity monitoring and static electricity elimination functions on the product object to be eliminated.

[0093] The closed-loop static electricity monitoring and elimination system described in the technical solution of the present invention uses at least two static electricity monitorings on the product object to be eliminated, controls the ability of the next static electricity elimination according to the result of each static electricity monitoring, and automatically performs multiple static electricity eliminations on the product object to be eliminated.

[0094] Figure 3 In order to meet the above needs, the technical solution of the present invention also provides a static electricity monitoring and elimination system demonstration device that works based on the principle of the aforementioned closed-loop static electricity monitoring and elimination system, and the inventive point is:

[0095] Based on the hardware structure and working mode of the aforementioned closed-loop electrostatic monitoring and elimination system, the electrostatic monitoring and elimination system demonstration device is also provided with a fourth electrostatic sensor device (marked as CGQ2 in the figure), a fifth electrostatic sensor device (marked as CGQ3 in the figure), a test plate 2 that can be moved along the guide rail 1 in a controlled manner (i.e., the aforementioned product object to be de-electrified), a high-voltage DC power supply 10, a guide rail PLC controller 11 and an integrated power supply 9.

[0096] Among them, the fourth electrostatic sensor device, the fifth electrostatic sensor device or the integrated power supply are also respectively provided with independent IP addresses; the fourth electrostatic sensor device, the fifth electrostatic sensor device or the integrated power supply are respectively connected to the control computer 8 via a wired or wireless local area network.

[0097] The control computer is an industrial touch screen computer, in which system monitoring software is installed for online display of the working status of the equipment and monitoring the working status of each electrostatic sensor device and each electrostatic elimination device.

[0098] The fourth electrostatic sensor device and the fifth electrostatic sensor device are installed at different vertical heights from the test plate, so as to verify the monitoring accuracy of multiple electrostatic sensors at the same electrostatic voltage or the consistency of the monitored electrostatic voltage values ​​at different monitoring distances, under the premise that the electrostatic voltage values ​​on the surface of the target object are the same.

[0099] The test plate 2 is located on a guide rail sliding platform 1c that can move along the guide rail and is used to carry the product object to be de-energized. Under the control of the guide rail PLC controller 11, the test plate can move back and forth along the guide rail, stay at a certain position on the guide rail, or stay at a predetermined position for a preset time.

[0100] The high-voltage DC power supply is used to apply an initial static voltage to the product object to be de-energized that moves to the beginning or end of the guide rail; the initial static voltage includes a positive voltage or a negative voltage.

[0101] The guide rail PLC controller is used to control the movement speed or moving range of the test plate on the guide rail, and can make the test plate move to a certain set position, and after being stationary at the set position for a preset time, continue to move to other set positions.

[0102] The integrated power supply is used to supply power to each electrostatic sensing device and each electrostatic elimination device. At the same time, the working status and working parameters of each device are transmitted in real time to the system monitoring software in the control computer through a wired or wireless network.

[0103] Specifically, the vertical installation heights of the fourth electrostatic sensor device and the fifth electrostatic sensor device from the test flat plate are not equal to the vertical installation heights of the first to third electrostatic sensor devices from the test flat plate.

[0104] Regarding the problem of monitoring the same static voltage value on the surface of an object by the electrostatic sensor at different monitoring distances in this technical solution, further explanation is as follows:

[0105] 1. By using the same type of electrostatic sensor to monitor the same charged target object at different monitoring distances, the accuracy of the sensor's monitoring of the static voltage on the object surface can be verified.

[0106] 2. The electrostatic sensor monitors the same electrostatic voltage value on different charged target objects at different monitoring distances, which can verify the accuracy of the sensor's monitoring of the electrostatic voltage parameter on the object surface.

[0107] The application background of the above monitoring scheme is:

[0108] On an LCD panel production line, the same type (same structural size) of LCD panels may flow through various process operation devices, which inevitably requires the installation distance of the electrostatic sensor (i.e. the monitoring distance, the distance between the electrostatic sensor head and the target object) to be determined based on the spatial installation requirements of the process operation device. In more complex situations, different types (different structural sizes) of LCD panels may be produced on the same production line.

[0109] Reasons for implementing the above monitoring program:

[0110] The same type of LCD panel, after the same process, should produce roughly the same static voltage value, and after passing through the same static eliminator, it should obtain roughly the same static elimination effect (i.e. roughly the same residual static voltage). However, the installation height of the static sensor may be different. In order to ensure the consistency of the static voltage monitoring (alarm) standard and to better control the production quality, the static sensor is required to have consistent monitoring results for target objects with the same static voltage value at different monitoring distances.

[0111] Advantages of implementing the above monitoring program:

[0112] From a technical point of view, objects with the same surface electrostatic voltage value do not necessarily carry the same amount of electrostatic charge, that is, the capacitance of the objects is different. The electrostatic charge on the surface of the object will radiate the electrostatic field outward, with the grounded conductor at infinity or nearby being the zero potential; therefore, the electrostatic field formed by the electrostatic charge is weaker the farther away from the electrostatic charge, that is, the smaller the electrostatic voltage value monitored by the electrostatic sensor (the electrostatic sensor in this patent is essentially a monitor of the electrostatic field formed by the electrostatic charge on the surface of the object).

[0113] The electrostatic sensor in this patent achieves the purpose of ensuring that the electrostatic voltage values ​​detected by the sensor are consistent for different target objects at different monitoring distances as long as their surface electrostatic voltage values ​​are the same, by setting different monitoring coefficients (amplification factors) for different monitoring distances and using higher resolution electronic components.

[0114] The consistency, uniqueness and repeatability of such monitoring results make it highly operable and convenient for static electricity control in the product production process, and have good practical application effects.

[0115] like Figure 3 As shown in the figure, the closed-loop static electricity monitoring and elimination system described in the technical solution of the present invention is carried out and works in the following manner:

[0116] a) A positive and negative high voltage conductive plug is set at the beginning and end 1a and 1b of the guide rail respectively ( Figure 3 The positive and negative high-voltage conductive plugs are respectively connected to the positive and negative high-voltage output terminals of the high-voltage DC power supply 10, and are used to apply positive and negative voltages to the test plate 2 moved to the first and last positions of the guide rail. At the same time, an electrostatic monitoring device (labeled as CGQ1 and CGQ 6 in the figure) is respectively arranged above the first and last positions of the guide rail to monitor the initial values ​​of the positive and negative voltages on the test plate 2 located at the first and last positions of the guide rail. The two electrostatic monitoring devices can also play a role in detecting whether the positive and negative high-voltage outputs of the high-voltage DC power supply 10 are normal.

[0117] b) Along the length direction of the guide rail, a plurality of predetermined positions are set respectively (positions 1 to 9 are represented by ① to ⑨ in the figure, and the same applies below), and two sets of static elimination devices are respectively set above two of the predetermined positions (⑤ and ⑦ in the figure) (the first static elimination device is represented by XCQ1 in the figure, and the second static elimination device is represented by XCQ2), and an electrostatic monitoring device (represented by CGQ4, CGQ5 and CGQ6 in the figure) is respectively set above the front and rear predetermined positions of each set of static elimination devices (represented by positions ④, ⑥, and ⑧ in the figure).

[0118] The static electricity monitoring device CGQ 6 on the far right of the figure actually has two functions at the same time: one is to monitor whether the residual static electricity or static voltage value on the test plate 2 after being eliminated by the second static electricity elimination device XCQ2 is lower than the set alarm threshold; the other is to monitor the initial value of the negative voltage on the test plate 2 at the end of the guide rail after the high-voltage DC power supply 10 applies a negative voltage to the test plate 2 moved to the end of the guide rail;

[0119] The electrostatic monitoring device CGQ 6 can also be provided by using two electrostatic monitoring devices CGQ 6′ and CGQ 6″, one of which is used to monitor whether the residual static electricity or static voltage value on the test plate 2 after being eliminated by the second electrostatic eliminator XCQ2 is lower than the set alarm threshold; the other electrostatic monitoring device CGQ 6″ is used to monitor the initial value of the negative voltage on the test plate 2 at the end position of the guide rail; in this case, the electrostatic monitoring device CGQ 6″ is provided above the position ⑧, and the electrostatic monitoring device CGQ 6′ is provided at the position ⑧′ between the position ⑦ and the position ⑧ (not shown in the figure);

[0120] c) Along the length direction of the guide rail, an electrostatic monitoring device is respectively arranged above at least two adjacent predetermined positions (at positions 2 and 3 in the figure), and the two electrostatic monitoring devices (labeled CGQ2 and CGQ3 in the figure) are at different vertical installation heights from the test plate 2 (in fact, at Figure 3 In the figure, the electrostatic monitoring devices numbered CGQ1 to CGQ6 are installed at different vertical heights from the test plate 2, but can perform the same monitoring data verification function);

[0121] d) In the system monitoring software, a corresponding association relationship is established for each static monitoring device and static eliminator through the IP address; and a corresponding control association relationship is established between the static monitoring devices located in front of and behind each set of static eliminators and the corresponding static eliminators; the control association relationship at least includes: along the moving direction of the test plate, the static monitoring output signal of the static monitoring device located in front of each static eliminator is used to control the operation start control of the static eliminator located behind the static monitoring device;

[0122] e) The guide rail PLC controller controls the movement of the test plate; when the system monitoring software is initially running, the test plate is at the first position of the guide rail head end 1a (indicated by ① in the figure, the same below), and the test plate is in electrical contact with the positive high-voltage output terminal +HV of the high-voltage DC power supply, so that the test plate is positively charged;

[0123] The head-end electrostatic sensor located at the first position of the head end of the guide rail monitors the static voltage on the flat panel and transmits the monitoring signal to the industrial touch screen computer. The static voltage monitored by the electrostatic sensor is displayed on the monitoring software; if the monitored static voltage exceeds the set alarm threshold, the head-end electrostatic sensor CGQ1 outputs a red alarm signal;

[0124] f) The guide rail PLC controller controls the movement of the test plate, passing through each preset position in turn. Each electrostatic sensor device set at these positions respectively monitors the static voltage on the test plate at the corresponding position, and transmits the monitoring signal to the industrial touch screen computer. If the static voltage monitored by the electrostatic sensor at a certain position exceeds the set alarm threshold, the corresponding electrostatic sensor outputs a red alarm signal;

[0125] g) When the test plate moves to position 4, the electrostatic voltage detected by the corresponding No. 4 electrostatic sensor device (labeled CGQ4 in the figure) exceeds the threshold value, and the alarm signal has been transmitted to the industrial touch screen computer, and there is a linkage control between the electrostatic sensor device 4 and the first electrostatic eliminator (the ion rod is taken as an example in the figure, labeled XCQ1) located behind it, so the industrial touch screen computer (monitoring system) starts the electrostatic eliminator to eliminate the static charge on the test plate;

[0126] h) When the test plate moves to position 6, the first static eliminator (labeled XCQ1) has eliminated the static charge on the test plate, so the No. 5 static sensor (labeled CGQ5) corresponding to this position cannot detect the static electricity on the plate or the static voltage is lower than the set alarm threshold;

[0127] i) When the test plate 2 moves to position 8, it makes electrical contact with the negative high voltage output terminal -HV of the high voltage DC power supply, so that the test plate is charged with negative static electricity; the static electricity sensor device CGQ6 corresponding to the position detects that the test plate is charged with negative static electricity, and it exceeds the set threshold, so an alarm signal is transmitted to the industrial touch screen computer, and the test plate returns under the control of the guide rail PLC controller;

[0128] j) When the test plate with negative static electricity returns to position 7, the corresponding electrostatic sensor device No. 6 CGQ6 detects that the static voltage exceeds the threshold value at the previous position and has transmitted the alarm signal to the industrial touch screen computer. In addition, the electrostatic sensor device No. 6 CGQ6 is linked with the second electrostatic elimination device (taking the ion fan as an example, labeled XCQ2) for control. Therefore, the monitoring system starts the ion fan to eliminate the negative charge on the test plate.

[0129] k) When the test plate moves to position 6 after being de-charged by the ion blower, the corresponding electrostatic sensor device CGQ5 detects that the negative charge on the test plate has been eliminated or the static voltage is lower than the set alarm threshold;

[0130] l) Subsequently, the test plate passes through the 5th, 4th, 3rd and 2nd positions in sequence, and after staying at each position for a set time, returns to the initial 1st position.

[0131] Furthermore, the electrostatic monitoring and elimination system demonstration device monitors the electrostatic voltage of the test plate by setting at least two electrostatic monitoring devices with unequal vertical installation heights from the test plate on the moving path of the test plate (the No. 2 and No. 3 electrostatic sensors are taken as examples in the figure, labeled CGQ2 and CGQ3 in the figure). By comparing the measured values ​​of the two electrostatic monitoring devices, it can be used to judge and verify the monitoring accuracy of multiple electrostatic monitoring devices under the same electrostatic voltage at multiple different monitoring distances.

[0132] The static electricity monitoring and elimination system demonstration device of the present invention arranges at least two sets of static electricity elimination devices on the moving path of the test plate, and evaluates and verifies the static electricity elimination performance of various static electricity elimination devices or sets of static electricity elimination devices by comparing their respective static electricity elimination effects.

[0133] At the same time, the static electricity monitoring and elimination system demonstration device described in the present invention, as a static electricity monitoring and elimination demonstration device, can also play a role in technology demonstration.

[0134] Figure 5 In the figure, the test plate 2 comprises two upper and lower square stainless steel metal plates of the same structural dimensions, the lower plate is mounted and fixed on the sliding platform 1c of the guide rail, and the upper and lower plates are insulated, isolated and supported by polytetrafluoroethylene cylinders;

[0135] At the bottom of the upper plate, at the front and rear ends of the center line of the test plate in the direction of movement, a conductive end 2a and 2b are fixed respectively. The conductive end is a hollow columnar structure, which is used to contact the positive and negative high-voltage conductive plugs arranged at the head and end of the guide rail (the negative high-voltage conductive plug - HV is taken as an example in the figure);

[0136] Combination Figure 3 , Figure 5 As shown in the figure, the positive and negative high-voltage conductive plugs are respectively arranged at the head end 1a and the end 1b of the guide rail, and are respectively electrically connected to the positive and negative high-voltage output terminals of the high-voltage DC power supply.

[0137] Advantages of implementing the above technical solution:

[0138] From a technical point of view, objects with the same surface electrostatic voltage value do not necessarily carry the same amount of electrostatic charge, that is, the capacitance of the objects is different. The electrostatic charge on the surface of the object will radiate the electrostatic field outward, with the grounded conductor at infinity or nearby being the zero potential; therefore, the electrostatic field formed by the electrostatic charge, the farther away from the electrostatic charge, the weaker the field strength, that is, the smaller the electrostatic voltage value monitored by the electrostatic sensor (in this patent technical solution, the electrostatic sensor is essentially a monitor of the electrostatic field formed by the electrostatic charge on the surface of the object).

[0139] Example:

[0140] Embodiment 1:

[0141] For hardware layout structure relationship, see Figure 3 , Figure 5 As shown in the figure, the logic control process of the ion bar and the ion fan can be found in Figure 6a and Figure 6b As shown in:

[0142] 1. Use aluminum alloy profiles to build the demonstration device frame.

[0143] 2. Install and fix the industrial touch screen computer 8, integrated power supply 9, high voltage DC power supply 10, guide rail PLC controller 11, and sliding guide rail 1 on the demonstration frame.

[0144] 3. Install and fix the test plate device (referred to as the test plate, numbered 2 in the figure) on the guide rail sliding platform 1c. The test plate device is two square stainless steel plates with the same structural shape, insulated and fixed in the middle by four polytetrafluoroethylene cylinders. The two plates are parallel to each other and their projections overlap. At the bottom of the upper plate (powered plate), a conductive hollow hexagonal column is welded at both ends of the center line of the movement direction for electrical contact with the high-voltage plug. The lower plate is installed and fixed on the guide rail sliding platform and grounded together with the entire demonstration device frame.

[0145] 4. Using mounting rods, mounting hangers, mounting brackets, etc., install electrostatic sensor 1 (i.e., electrostatic sensor numbered 1, labeled CGQ1 in the figure, and so on) at position 1 (i.e., the first position mentioned above, indicated by label ① in the figure, and so on below), install electrostatic sensor 2 at position 2, install electrostatic sensor 3 at position 3, install electrostatic sensor 4 at position 4, install ion rod (labeled XCQ 1 in the figure) at position 5, install electrostatic sensor 5 at position 6, install ion fan (labeled XCQ 2 in the figure) at position 7, and install electrostatic sensor 6 at position 8. Position 1 is located at the leftmost end of the sliding guide rail (i.e., the head end of the guide rail mentioned above), and position 8 is located at the rightmost end of the sliding guide rail (i.e., the end of the guide rail mentioned above).

[0146] The distance between the center of position 1 and the center of position 2 is 25cm, the distance between the center of position 2 and the center of position 3 is 25cm, the distance between the center of position 3 and the center of position 4 is 25cm, the distance between the center of position 4 and the center of position 5 is 35cm, the distance between the center of position 5 and the center of position 6 is 25cm, the distance between the center of position 6 and the center of position 7 is 25cm, and the distance between the center of position 7 and the center of position 8 is 35cm.

[0147] The sensor should be installed so that its detection window faces the center of the test plate, the ion rod should be installed so that it faces the center of the test plate, and the ion fan should be installed so that its outlet faces the center of the test plate.

[0148] The installation height of electrostatic sensor 1 should be such that its detection window is 5mm away from the test plate; the installation height of electrostatic sensor 2 should be such that its detection window is 50mm away from the test plate; the installation height of electrostatic sensor 3 should be such that its detection window is 100mm away from the test plate; the installation height of electrostatic sensor 4 should be such that its detection window is 200mm away from the test plate; the installation height of the ion rod should be such that its electrode needle is 50mm away from the test plate; the installation height of electrostatic sensor 5 should be such that its detection window is 300mm away from the test plate; the installation height of the ion fan should be such that its air outlet is 300mm away from the test plate; the installation height of electrostatic sensor 6 should be such that its detection window is 500mm away from the test plate.

[0149] 5. The positive and negative high-voltage plugs of the high-voltage DC power supply 8 are insulated and fixed at the beginning and end 1a and 1b of the guide rail respectively. When the test plate moves to position 1 and position 8, it can be inserted into the hollow hexagonal conductive columns at the front and rear ends of the bottom center line of the upper plate (power-on plate).

[0150] 6. Through the guide rail PLC controller, compile the test plate operation program, so that the test plate starts from the initial position 1, and accurately runs to position 2, position 3, position 4, position 5, position 6, position 7, position 8 in sequence, and then returns to run, passing through position 7, position 6, position 5, position 4, position 3, position 2, and finally returns to the initial position 1.

[0151] 7. Through the guide rail PLC controller, compile the test plate operation program to make the test plate stay at position 1 for 1.5s, stay at position 2 for 1.5s, stay at position 3 for 1.5s, stay at position 4 for 1.5s, stay at position 5 for 1s, stay at position 6 for 1.5s, stay at position 7 for 2s, and stay at position 8 for 1.5s.

[0152] The time the test plate stays at each electrostatic sensor should be greater than the time required for the electrostatic signal to be transmitted to the monitoring system plus the sensor monitoring response time.

[0153] The time the test plate stays in the ion rod and ion fan should be greater than the time required for the control signal to be wirelessly transmitted to the eliminator plus the start-up time of the eliminator plus the eliminator time.

[0154] That is: the residence time of the test plate at the ion rod (position 5)> the normal de-charge time of the ion rod + the time required for the ion rod to resume normal operation from the standby state + the time required for the monitoring system control signal to be transmitted to the ion rod.

[0155] The residence time of the test plate at the ion fan (position 7)> the normal de-energization time of the ion fan + the time required for the ion fan to resume normal operation from the standby state + the time required for the monitoring system control signal to be transmitted to the ion fan.

[0156] 8. Turn on the power switch of the integrated power supply to power the electrostatic sensor, ion rod and ion blower.

[0157] The integrated power supply contains a wireless transmission module, which can transmit monitoring data and working status data to the monitoring software of the industrial touch screen computer. At the same time, the monitoring software selects the corresponding output control signal to instruct the ion rod and ion fan to run or standby according to the monitoring signal of the electrostatic sensor.

[0158] 9. Turn on the industrial touch screen computer, establish a wireless network connection with the integrated power supply, start the monitoring software program, and set the electrostatic sensor 4 to be linked to the ion rod XCQ1 and the electrostatic sensor 6 to be linked to the ion blower XCQ2 in the monitoring system software;

[0159] Combination Figure 6a and Figure 6b As shown in , the static alarm threshold is set to ±500V.

[0160] When the static voltage value detected exceeds 500V, the static sensor outputs an alarm signal to the monitoring software through the wireless module. The monitoring software issues a command to start the ion rod or ion fan to work continuously for a set time to eliminate the static charge on the test plate.

[0161] When the static voltage value is detected to be less than 500V, the monitoring software will issue a standby command to the ion rod or ion blower. The electrostatic sensor is always in the monitoring working state. During the whole monitoring process, the monitoring data will be transmitted to the monitoring software immediately, and the static voltage data will be displayed in real time. When the static voltage threshold is exceeded, a red lightning alarm mark will appear. The standby state, working state and real-time operating parameters of the ion rod and ion blower will also be continuously transmitted to the monitoring software, and its state parameters will be displayed in real time.

[0162] 10. Adjust the positive and negative high voltage outputs of the high voltage DC power supply to ±1500V, and output the positive and negative high voltages to the positive and negative high voltage plugs at the same time.

[0163] 11. Start the PLC running program of the guide rail, and the test plate runs according to the set program: at position 1, the positive high voltage output is tested on the upper plate, and the electrostatic sensor 1 detects a static voltage value of +1500V on the test plate;

[0164] When the test plate moves to position 2, electrostatic sensor 2 detects a +1500V static voltage value on the test plate; when the test plate moves to position 3, electrostatic sensor 3 detects a +1500V static voltage value on the test plate;

[0165] When the test plate moves to position 4, the electrostatic sensor 4 detects a static voltage value of +1500V on the test plate; since the electrostatic sensor 4 and the ion rod are set for linkage control, when the test plate moves to position 5, the ion rod is in working state, eliminating the static charge on the test plate, until the set working time is reached and the ion rod enters the standby state.

[0166] The de-energized test plate moves to position 6, and the electrostatic sensor 5 detects that there is no static voltage value on the test plate or the static voltage value is lower than the set static voltage threshold.

[0167] When the test plate moves to position 7, the ion blower is still in standby mode.

[0168] The test plate moves to position 8, the upper plate (power-on plate) is powered by the negative high voltage output, the electrostatic sensor 6 detects a static voltage value of -1500V, and then sends out an alarm signal, and the monitoring system sends out a command to start the ion blower.

[0169] When the test plate moves back to position 7, the ion blower is in working state to eliminate the static charge on the test plate until the set working time is reached and the ion blower enters the standby state.

[0170] The test plate continues to move back according to the program. Since the static charge on the test plate has been eliminated by the ion fan, at positions 6, 4, 3, and 2, the electrostatic sensors 5, 4, 3, and 2 detect that there is no static voltage value on the test plate or the static voltage value is lower than the set static voltage threshold.

[0171] In this embodiment, the key points are: using a high-voltage DC power supply to power the test plate to simulate a charged object in an artificial and deliberate experimental manner, and using this as a monitoring object to verify the monitoring accuracy of multiple electrostatic sensors at the same static voltage at multiple monitoring distances; and the destaticization performance of the ion fan and ion rod can be verified together; because the electrostatic sensor and the destaticizer can be set up through the monitoring software to be linked to control (CGQ4 and XCQ1 are linked to control, CGQ6 and XCQ2 are linked to control), the operating reliability of the monitoring system can be verified.

[0172] Embodiment 2:

[0173] For hardware layout structure relationship, see Figure 4 As shown in the figure, the logic control process of the ion bar and the ion fan can be found in Figure 7a , Figure 7b as shown in .

[0174] The difference between implementation mode 2 and implementation mode 1 is that:

[0175] 1. Add position 9 25 cm backward from the center of position 6; and install electrostatic sensor 7 at position 9, with the same installation height as electrostatic sensor 5.

[0176] The purpose of adding the electrostatic sensor 7 is to improve the linkage setting of the eliminator and the electrostatic sensor (CGQ4, CGQ5 and XCQ1 linkage control, CGQ6, CGQ7 and XCQ2 linkage control), and strengthen the precise adjustment of the electrostatic dissipation performance of the eliminator. For example, when the electrostatic sensor CGQ5 detects that the test plate after the eliminator (ion rod) XCQ1 still has a large residual static voltage (exceeding the set electrostatic threshold), CGQ5 sends an alarm signal to the monitoring system, and the monitoring system adjusts the ion output performance (electrification performance) of XCQ1 according to the electrostatic voltage signal it monitors. When the detection plate moves from the 1a end and passes through XCQ1 again, the static charge on the detection plate is completely eliminated.

[0177] 2. Use the guide rail PLC controller to program the test plate to keep the test plate at position 9 for 1.5 seconds.

[0178] 3. Set the electrostatic sensor 4 and the electrostatic sensor 5 to be linked with the ion rod XCQ 1 in the monitoring system software, and the electrostatic sensor 6 and the electrostatic sensor 7 to be linked with the ion blower XCQ2.

[0179] 4. Since both electrostatic sensor 4 and electrostatic sensor 5 are linked to the ion rod, when the test plate moves to position 4, electrostatic sensor 4 detects that the test plate has a +1500V static voltage, which exceeds the set static threshold. Electrostatic sensor 4 sends an alarm signal to the monitoring system through the wireless transmission module in the integrated power supply, and the monitoring system sends a control command to start the ion rod.

[0180] When the test plate moves to position 5, the ion rod eliminates the static charge on the test plate.

[0181] When the test plate moves to position 6, the electrostatic sensor 5 detects that there is no static voltage on the test plate or the static voltage is less than 500V, and transmits the detected static signal to the monitoring system. The monitoring system issues a control command to stop the ion rod from de-electrifying and enter the standby state.

[0182] On the contrary, if the electrostatic sensor 5 detects that the static voltage of the test plate is greater than or equal to 500V, it means that the destaticization performance of the ion rod has declined. The electrostatic sensor 5 will transmit the electrostatic alarm signal to the monitoring system, and the monitoring system will issue a red lightning alarm mark or issue an adjustment instruction for the operating parameters of the ion rod to improve the destaticization ability of the ion rod.

[0183] 5. Since both electrostatic sensor 6 and electrostatic sensor 7 are linked to ion blower XCQ1, when the test plate moves to position 8, electrostatic sensor 6 detects that the test plate has a static voltage of -1500V, which exceeds the set static threshold. Electrostatic sensor 6 sends an alarm signal to the monitoring system through the wireless transmission module in the integrated power supply, and the monitoring system sends a control command to start the ion blower.

[0184] When the test plate moves to position 7, the ion blower XCQ 2 eliminates the static charge on the test plate.

[0185] When the test plate moves to position 9, the electrostatic sensor 7 detects that there is no static voltage on the test plate or the static voltage is less than 500V, and transmits the detected static signal to the monitoring system. The monitoring system issues a control command to stop the ion blower from de-energizing and enter the standby state.

[0186] On the contrary, if the electrostatic sensor 7 detects that the static voltage of the test plate is greater than or equal to 500V, it means that the de-static performance of the ion blower has declined. The electrostatic sensor 7 will transmit the electrostatic alarm signal to the monitoring system, and the monitoring system will issue a red lightning alarm mark or issue an adjustment instruction for the operating parameters of the ion blower to improve the de-static ability of the ion blower.

[0187] In this embodiment, the key point is: by adding an electrostatic sensor, the eliminator is linked with the sensors at its front and rear ends to enhance the precise adjustment of the eliminator's static dissipation performance.

[0188] Embodiment 3:

[0189] 1. Hardware layout structure relationship is as follows Figure 4 As shown in the figure, the logic control process of the ion rod and the ion fan is shown in the reference Figure 8a and Figure 8b .

[0190] The electrostatic sensor 4 and the electrostatic sensor 5 are linked to the ion rod, and the electrostatic sensor 6 and the electrostatic sensor 7 are linked to the ion blower.

[0191] 2. When the electrostatic sensor 4 detects that the flat plate electrode has a static voltage of +1500V, the electrostatic sensor sends an alarm signal to the monitoring system through the wireless transmitter module in the integrated power supply, and the monitoring system sends a control command to start the ion rod to eliminate the static charge on the flat plate.

[0192] 3. After the ion rod eliminates the static electricity, if the sensor 5 and the sensor 7 detect that the static voltage of the plate is greater than +500V (such as +600V), it means that the static electricity elimination ability of the ion rod has decreased; the sensor 7 sends the static electricity alarm signal to the monitoring system through the wireless transmission module in the integrated power supply, and the monitoring system sends a control command to start the ion fan to continue to eliminate the static electricity on the plate.

[0193] 4. When the electrostatic sensor 6 detects that the flat plate electrode has a static voltage of -1500V, the electrostatic sensor sends an alarm signal to the monitoring system through the wireless transmitter module in the integrated power supply, and the monitoring system sends a control command to start the ion fan to eliminate the static charge on the flat plate.

[0194] 5. After the ion fan has eliminated the static electricity, if the sensor 7 and the sensor 5 detect that the static voltage of the plate is less than -500V (such as -600V), it means that the de-staticizing ability of the ion fan has decreased; the sensor 5 sends the static electricity alarm signal to the monitoring system through the wireless transmitting module in the integrated power supply, and the monitoring system sends a control command to start the ion rod to continue to eliminate the static charge on the plate.

[0195] Compared with the second embodiment, the present embodiment adds a function of eliminating the residual static electricity on the test plate again.

[0196] In this embodiment, the key point is that after the first static elimination, there is still a static voltage on the flat electrode that exceeds the set threshold. At this time, the monitoring system instructs the subsequent static elimination device to continue working to eliminate the remaining static electricity on the flat electrode.

[0197] Combining the above three embodiments, it can be seen that Figure 6a , Figure 6b , Figure 7a , Figure 7b , Figure 8a and Figure 8b In the technical solution of the present invention, the working logic relationship and control mode and difference between the electrostatic sensor, the electrostatic elimination device (including the ion rod and / or the ion fan), and the monitoring system are clearly given. Since it is drawn using the customary representation method in the industry, the technicians in this field can completely understand its meaning and the logical relationship between them without any doubt, and will not be described here.

[0198] The technical solution of the present invention establishes corresponding associations for various electrostatic monitoring devices and electrostatic elimination devices through IP addresses, which is convenient for building an electrostatic monitoring and elimination system that can meet customer needs by establishing a local area network at the production site, and the system has good scalability; it adopts a closed-loop feedback mode, and the electrostatic sensor device and the electrostatic elimination device implement linkage control one by one, which enhances the self-judgment ability and electrostatic elimination effect of the entire electrostatic monitoring and elimination system, and helps users to judge or evaluate whether the functions of various monitoring and electrostatic elimination components are normal, shortening the time or cycle for on-site problem solving and fault handling; it can judge and verify the monitoring accuracy of multiple electrostatic monitoring devices under the same static voltage at multiple different monitoring distances; it adopts a logical control mode of multiple electrostatic monitoring and multiple electrostatic elimination, realizing the true meaning of "intelligent automatic monitoring and electrostatic elimination".

[0199] The present invention can be widely used in the design and management fields of static electricity monitoring and elimination systems.

Claims

1. A closed-loop static electricity monitoring and elimination system, comprising a static electricity elimination device, a static electricity monitoring device and a product object to be eliminated that is movable on a guide rail, characterized in that: Along the running route and running direction of the product object to be de-electrified on the guide rail, a first static electricity monitoring device, a first static electricity eliminator, a second static electricity monitoring device, a second static electricity eliminator and a third static electricity monitoring device are sequentially arranged above the guide rail; The first static electricity monitoring device is used to monitor the initial static voltage of the product object to be de-electrified; The first static elimination device is used to perform the first static elimination on the product to be eliminated; The second static electricity monitoring device is used to monitor the residual static voltage of the product object to be de-electrified; The second static elimination device is used to perform static elimination again on the product to be eliminated; The third static electricity monitoring device is used to monitor the residual static voltage of the product object to be de-electrified; The first static electricity monitoring device is associated with the first static electricity elimination device to realize linkage control; the second static electricity monitoring device is associated with the second static electricity elimination device to realize linkage control; When the product to be de-electrified moves along the guide rail, it passes through the first electrostatic monitoring device to the third electrostatic monitoring device in sequence. The first electrostatic monitoring device controls the first electrostatic eliminator to output the first electrostatic elimination capability corresponding to the initial electrostatic voltage according to the initial electrostatic voltage of the product to be de-electrified. The first electrostatic eliminator performs the first electrostatic elimination on the product to be de-electrified. Then, the second static electricity monitoring device monitors the residual static voltage of the product object to be de-electrified after the first static electricity elimination. If the residual static voltage of the product object to be de-electrified is lower than the preset threshold, the second static electricity elimination device is on standby; if the residual static voltage of the product object to be de-electrified is higher than the preset threshold, the second static electricity monitoring device controls the second static electricity elimination device to output the static electricity elimination capacity corresponding to the residual static voltage value according to the residual static voltage of the product object to be de-electrified, and the second static electricity elimination device performs static electricity elimination on the product object to be de-electrified again; Finally, the third static electricity monitoring device monitors whether the residual static voltage of the product to be de-electrified meets the process specification requirements. If the residual static voltage meets the requirements, it will be released. If it exceeds the standard, an alarm signal will be output; The closed-loop static electricity monitoring and elimination system is further provided with a fourth static electricity monitoring device, a fifth static electricity monitoring device, a test plate that can be controlled to move along the guide rail, a high voltage generator, a guide rail PLC controller and an integrated power supply; The fourth and fifth electrostatic monitoring devices or integrated power supplies are respectively provided with independent IP addresses; the fourth and fifth electrostatic monitoring devices or integrated power supplies are respectively connected to the control computer via a wired or wireless local area network; The control computer is an industrial touch screen computer, in which system monitoring software is installed to display the working status of the equipment online and monitor the working status of each static monitoring device and each static elimination device; The fourth and fifth electrostatic monitoring devices are not installed at the same vertical height from the test plate; Each electrostatic monitoring device sets different monitoring coefficients for different monitoring distances and uses electronic components with higher resolution to achieve the purpose of having the same electrostatic voltage value detected by the sensor for different target objects at different monitoring distances as long as their surface electrostatic voltage values ​​are the same; The test plate is used to simulate the product object to be de-energized. The test plate can move back and forth along the guide rail, stay at a certain position of the guide rail, or stay at a predetermined position for a preset time under the control of the guide rail PLC controller; The high voltage generator is used to apply an initial static voltage to the test plate moved to the head end or the end end of the guide rail; the initial static voltage includes a positive voltage or a negative voltage; The guide rail PLC controller is used to control the movement speed or movement range of the test plate on the guide rail, so that the test plate can move to a certain set position, and after being stationary at the set position for a preset time, continue to move to other set positions; The integrated power supply is used to supply power to each static monitoring device and each static elimination device, and at the same time transmits the working status and working parameters of each device to the system monitoring software in the control computer in real time through a wired or wireless network; The closed-loop static electricity monitoring and elimination system sets an independent IP address for each static electricity monitoring device or static electricity elimination device, and establishes a corresponding association relationship between each static electricity monitoring device and static electricity elimination device through the IP address; by setting an static electricity monitoring device at the front and rear positions of the static electricity elimination device respectively, a closed-loop feedback mode is adopted, and a static electricity monitoring device and a static electricity elimination device are linked and controlled one by one, and the static electricity monitoring and static electricity elimination functions are automatically performed on the product to be eliminated; or, the static electricity elimination ability of the static electricity elimination device is monitored or evaluated; a plurality of static electricity monitoring devices are set at different vertical distances, and the actual measured values ​​of each static electricity monitoring device on the same charged object are compared to judge and verify the monitoring accuracy of multiple static electricity monitoring devices under the same static voltage at multiple different monitoring distances, so as to compare and judge the performance of each static electricity monitoring device.

2. The closed-loop static electricity monitoring and elimination system according to claim 1 is characterized in that The first, second and third static electricity monitoring devices, and the first and second static electricity eliminating devices are each provided with an independent IP address; The first, second and third static electricity monitoring devices, and the first and second static electricity eliminating devices are respectively connected to the control computer through a wired or wireless local area network.

3. The closed-loop static electricity monitoring and elimination system according to claim 1 is characterized in that The input ends of the first, second and third static electricity monitoring devices are electrically connected to the output ends of the integrated power supply, respectively, and are communicatively connected to the control computer through the communication module in the integrated power supply; The power input terminals of the first and second static eliminators are respectively connected to the power output terminals of the integrated power supply.

4. The closed-loop static electricity monitoring and elimination system according to claim 1 is characterized in that The closed-loop static electricity monitoring and elimination system uses at least two static electricity monitorings on the product to be eliminated, controls the ability of the next static electricity elimination according to the result of each static electricity monitoring, and automatically performs multiple static electricity eliminations on the product to be eliminated.

5. The closed-loop static electricity monitoring and elimination system according to claim 1 is characterized in that The vertical installation heights of the fourth and fifth electrostatic monitoring devices from the test plate are not equal to the vertical installation heights of the first to third electrostatic monitoring devices from the test plate.

6. The closed-loop static electricity monitoring and elimination system according to claim 1 is characterized in that The closed-loop static electricity monitoring and elimination system operates as follows: a) A positive and negative high-voltage conductive plug are respectively arranged at the head and the end of the guide rail, and the positive and negative high-voltage conductive plugs are respectively connected to the positive and negative high-voltage output terminals of the high-voltage power supply, and are used to apply positive and negative voltages to the test plate moved to the head and the end of the guide rail; at the same time, an electrostatic monitoring device is respectively arranged above the head and the end of the guide rail; b) setting a plurality of predetermined positions along the length direction of the guide rail, respectively setting two sets of static elimination devices above two of the predetermined positions, and setting a static monitoring device above the front and rear predetermined positions of each set of static elimination devices; c) an electrostatic monitoring device is respectively arranged above at least two adjacent predetermined positions along the length direction of the guide rail, and the two electrostatic monitoring devices are at different vertical installation heights from the test plate; d) Establish corresponding associations between each static monitoring device and static eliminator through IP addresses in the system monitoring software; and establish corresponding control associations between the static monitoring devices located in front of and behind each set of static eliminator and the corresponding static eliminator; The control association relationship at least includes: along the moving direction of the test plate, the static monitoring output signal of the static monitoring device located in front of each static eliminator is used to control the operation start control of the static eliminator located behind the static monitoring device; e) The guide rail PLC controller controls the movement of the test plate; when the system monitoring software is initially running, the test plate is at the first position at the head end of the guide rail, and the test plate is in electrical contact with the positive high-voltage output terminal of the high-voltage power supply, so that the test plate is positively charged; The head-end electrostatic monitoring device located at the first position of the head end of the guide rail monitors the static voltage on the flat panel and transmits the monitoring signal to the industrial touch screen computer, and the static voltage monitored by the electrostatic monitoring device is displayed on the monitoring software; if the monitored static voltage exceeds the set alarm threshold, the head-end electrostatic monitoring device outputs a red alarm signal; f) The guide rail PLC controller controls the movement of the test plate, passing through the second position, the third position, and the fourth position in sequence. The electrostatic monitoring devices set at these positions respectively monitor the static voltage on the test plate at their corresponding positions, and transmit the monitoring signal to the industrial touch screen computer. If the static voltage monitored by the electrostatic monitoring device at a certain position exceeds the set alarm threshold, the corresponding electrostatic monitoring device outputs a red alarm signal; g) When the test plate moves to the fourth position, because the static voltage detected by the corresponding static monitoring device exceeds the threshold value and has transmitted the alarm signal to the industrial touch screen computer, and there is linkage control between the static monitoring device and the first static elimination device located behind it, the industrial touch screen computer starts the static elimination device to eliminate the static charge on the test plate; h) When the test plate moves to the sixth position, the static electricity monitoring device at the corresponding position cannot detect static electricity on the plate or the static voltage value is lower than the set static electricity threshold because the first static electricity elimination device has eliminated the static electricity on the test plate. i) When the test plate moves to the eighth position, it is in electrical contact with the negative high-voltage output terminal of the high-voltage power supply, so that the test plate is charged with negative static electricity; the static electricity monitoring device corresponding to this position detects that the test plate is charged with negative static electricity, and the static electricity exceeds the set threshold, so an alarm signal is transmitted to the industrial touch screen computer, and the test plate returns under the control of the guide rail PLC controller; j) When the test plate with negative static electricity returns to the seventh position, because the corresponding static electricity monitoring device detects that the static voltage exceeds the threshold value at the previous position and has transmitted the alarm signal to the industrial touch screen computer, and the static electricity monitoring device is linked with the second static electricity elimination device, the monitoring system starts the second static electricity elimination device to eliminate the negative charge on the test plate; k) After the test plate is de-charged by the second static eliminator, it moves to the sixth position, and the corresponding static monitoring device detects that the negative charge on the test plate has been eliminated; l) Subsequently, the test plate passes through the fifth, fourth, third and second positions in sequence, and after staying at each position for a set time, returns to the initial first position.

7. The closed-loop static electricity monitoring and elimination system according to claim 1 is characterized in that The static electricity monitoring and elimination system sets at least two sets of static electricity elimination devices on the moving path of the test plate, and evaluates and verifies the static electricity elimination performance of various static electricity elimination devices or sets of static electricity elimination devices by comparing their respective static electricity elimination effects.

8. The closed-loop static electricity monitoring and elimination system according to claim 1 is characterized in that The test plate comprises two upper and lower square stainless steel metal plates of the same structural size. The lower plate is fixed on the sliding platform of the guide rail. The upper and lower plates are insulated, isolated and supported by polytetrafluoroethylene cylinders. At the bottom of the upper plate, at the front and rear ends of the center line of the test plate in the moving direction, a conductive end is fixed, and the conductive end is a hollow columnar structure, which is used to contact the positive and negative high-voltage conductive plugs arranged at the head and end of the guide rail; The positive and negative high-voltage conductive plugs are respectively arranged at the head and the end of the guide rail, and are respectively electrically connected to the positive and negative high-voltage output terminals of the high-voltage power supply.

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