CN114959860A - Circuit board medicine adding monitoring method and device - Google Patents
Circuit board medicine adding monitoring method and device Download PDFInfo
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- CN114959860A CN114959860A CN202210602998.7A CN202210602998A CN114959860A CN 114959860 A CN114959860 A CN 114959860A CN 202210602998 A CN202210602998 A CN 202210602998A CN 114959860 A CN114959860 A CN 114959860A
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D21/00—Processes for servicing or operating cells for electrolytic coating
- C25D21/12—Process control or regulation
- C25D21/14—Controlled addition of electrolyte components
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- C—CHEMISTRY; METALLURGY
- C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
- C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
- C25D7/00—Electroplating characterised by the article coated
- C25D7/12—Semiconductors
Abstract
The application provides a circuit board medicine adding monitoring method and device. The method comprises the steps of obtaining medicine adding state parameters of a circuit board; carrying out medicine valve treatment on the medicine adding state parameters and preset medicine adding state parameters to obtain medicine adding starting threshold values; and sending a medicine valve emptying signal to a medicine adding monitoring system according to the medicine adding starting threshold value so as to adjust the opening and closing state of the medicine discharging valve of the quantitative box. Confirm adding the medicine signal earlier, add medicine state parameter promptly and predetermine the medicine valve that adds medicine state parameter and handle, be convenient for open the condition of threshold value through adding the medicine, confirm whether need add the operation of liquid medicine to the circuit board, like this, open the size of threshold value according to adding the medicine for add medicine monitored control system and regulate and control the opening and the closed condition of the discharge valve of ration box, thereby be convenient for carry out accurate control to the addition of liquid medicine, improved the precision of adding the dose effectively.
Description
Technical Field
The invention relates to the technical field of circuit boards, in particular to a circuit board medicine adding monitoring method and device.
Background
With the development and popularization of the quality process improvement application technology of the PCB factory equipment, the quality requirement of the PCB is gradually increased. In the production process of the PCB, the substrate of the circuit board is subjected to copper plating operation through the automatic assembly line, namely, vertical continuous electroplating, so that the high efficiency of the PCB production is realized.
However, the traditional vertical continuous electroplating production line directly adds electroplating liquid medicine, and the liquid medicine dosage is usually measured by using a measuring cup on site, so that the condition of poor addition precision exists, and the production efficiency of PCBs is low.
Disclosure of Invention
The invention aims to overcome the defects in the prior art and provides a circuit board medicine adding monitoring method and device for effectively improving the medicine adding accuracy.
The purpose of the invention is realized by the following technical scheme:
a circuit board medication dosing monitoring method, the method comprising:
acquiring medicine adding state parameters of the circuit board;
carrying out medicine valve treatment on the medicine adding state parameters and preset medicine adding state parameters to obtain medicine adding starting threshold values;
and sending a medicine valve emptying signal to a medicine adding monitoring system according to the medicine adding starting threshold value so as to adjust the opening and closing state of the medicine discharging valve of the quantitative box.
In one embodiment, the acquiring of the medication state parameter of the circuit board includes: and acquiring the graph wire dosing level of the circuit board.
In one embodiment, the performing the drug valve processing on the dosing state parameter and the preset dosing state parameter includes: and carrying out medicine adding differential operation on the medicine adding state parameters and the preset medicine adding state parameters.
In one embodiment, the sending a medicine valve blank signal to a medicine adding monitoring system according to the medicine adding starting threshold value to adjust the opening and closing state of a medicine discharging valve of a quantitative box comprises: detecting whether the medicine adding starting threshold value is matched with a preset starting threshold value or not; and when the medicine adding starting threshold value is matched with the preset starting threshold value, sending a first medicine valve signal to the medicine adding monitoring system.
In one embodiment, the sending a first drug valve signal to the drug administration monitoring system when the drug administration start threshold matches the preset start threshold includes: when add the medicine and open threshold value more than or equal to when opening the threshold value in advance, to add the medicine monitored control system and send and add medicine and empty signal, so that the row's of ration box medicine valve is opened and is emptied the liquid medicine in the ration box.
In one embodiment, the add null signal includes a valve opening current and a valve opening time.
In one embodiment, when the medicine adding start threshold value is greater than or equal to the preset start threshold value, a medicine adding empty signal is sent to the medicine adding monitoring system, so that the medicine discharging valve of the quantitative box is opened and the liquid medicine in the quantitative box is emptied, and then the method further comprises the following steps: acquiring the opening and emptying time of the medicine discharge valve; detecting whether the open valve filling time is greater than or equal to the valve opening time; when the open valve filling time is larger than or equal to the valve opening time, a medicine supplementing signal is sent to the medicine adding monitoring system so as to close the medicine discharging valve and open the medicine supplementing valve, and then the liquid medicine is supplemented to the quantitative box.
In one embodiment, the detecting whether the drug adding start threshold is matched with a preset start threshold further includes: and when the medicine adding starting threshold value is not matched with the preset starting threshold value, sending a second medicine valve signal to the medicine adding monitoring system.
In one embodiment, the sending a second drug valve signal to the drug administration monitoring system when the drug administration start threshold does not match the preset start threshold includes: when it is less than to add the medicine it opens the threshold value to predetermine when opening the threshold value, to add medicine monitored control system sends and adds the medicine hysteresis signal, so that the discharge valve of ration box continuously closes.
A circuit board adds medicine monitoring device includes: the quantitative box, the copper plating box, the medicine discharge valve and the medicine adding monitoring mainboard; the quantitative box is used for storing liquid medicine for manufacturing the circuit board; the copper plating box is used for conveying liquid medicine to the substrate of the circuit board; the medicine discharging valve is respectively communicated with the copper plating box and the quantitative box; the input end of the medicine adding monitoring main board is used for receiving a medicine adding signal so as to obtain the medicine adding state parameters of the quantitative box, and the output end of the medicine adding monitoring main board is connected with the medicine discharging valve; the medicine adding monitoring mainboard is also used for carrying out medicine valve processing on the medicine adding state parameters and preset medicine adding state parameters to obtain a medicine adding starting threshold value; and sending a medicine valve emptying signal to a medicine adding monitoring system according to the medicine adding starting threshold value so as to adjust the opening and closing state of the medicine discharging valve of the quantitative box.
Compared with the prior art, the invention has at least the following advantages:
confirm adding the medicine signal earlier, add medicine state parameter promptly and predetermine the medicine valve that adds medicine state parameter and handle, be convenient for open the condition of threshold value through adding the medicine, confirm whether need add the operation of liquid medicine to the circuit board, like this, open the size of threshold value according to adding the medicine for add medicine monitored control system and regulate and control the opening and the closed condition of the discharge valve of ration box, thereby be convenient for carry out accurate control to the addition of liquid medicine, improved the precision of adding the dose effectively.
Drawings
In order to more clearly illustrate the technical solutions of the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, it should be understood that the following drawings only illustrate some embodiments of the present invention and therefore should not be considered as limiting the scope, and for those skilled in the art, other related drawings can be obtained according to the drawings without inventive efforts.
FIG. 1 is a flow chart of a circuit board dosing monitoring method according to an embodiment;
FIG. 2 is a schematic view of a structure of the measuring cassette according to an embodiment;
fig. 3 is a schematic view showing a tilted state of the measuring cassette shown in fig. 2.
Detailed Description
To facilitate an understanding of the invention, the invention will now be described more fully with reference to the accompanying drawings. Preferred embodiments of the present invention are shown in the drawings. This invention may, however, be embodied in many different forms and should not be construed as limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete.
It will be understood that when an element is referred to as being "secured to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like as used herein are for illustrative purposes only and do not represent the only embodiments.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein in the description of the invention is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.
The invention relates to a circuit board medicine adding monitoring method. In one embodiment, the circuit board medicine adding monitoring method comprises the steps of obtaining medicine adding state parameters of a circuit board; carrying out medicine valve treatment on the medicine adding state parameters and preset medicine adding state parameters to obtain medicine adding starting threshold values; and sending a medicine valve emptying signal to a medicine adding monitoring system according to the medicine adding starting threshold value so as to adjust the opening and closing state of the medicine discharging valve of the quantitative box. Confirm adding the medicine signal earlier, add medicine state parameter promptly and predetermine the medicine valve that adds medicine state parameter and handle, be convenient for open the condition of threshold value through adding the medicine, confirm whether need add the operation of liquid medicine to the circuit board, like this, open the size of threshold value according to adding the medicine for add medicine monitored control system and regulate and control the opening and the closed condition of the discharge valve of ration box, thereby be convenient for carry out accurate control to the addition of liquid medicine, improved the precision of adding the dose effectively.
Please refer to fig. 1, which is a flowchart illustrating a method for monitoring chemical addition on a circuit board according to an embodiment of the present invention. The circuit board medicine adding monitoring method comprises part or all of the following steps.
S100: and acquiring the medicine adding state parameters of the circuit board.
In this embodiment, the quantitative box is used for storing liquid medicine, the medicine inlet end of the quantitative box is communicated with the medicine supplementing system, specifically, the medicine inlet end of the quantitative box is connected with the automatic adding main tank body through the medicine adding pump, so that the liquid medicine in the automatic adding main tank body can be supplemented and stored in the quantitative box. Add the medicine state parameter with the working method of arranging of ration box corresponds, it is used for embodying to add the medicine state parameter the operating condition of the valve of arranging of ration box, for example, it is the state parameter that the signal that receives to add liquid medicine to the circuit board corresponds to add the medicine state parameter. Like this, after having obtained and having added medicine state parameter, be convenient for follow-up right the control that the discharge valve of ration box opened and closed to it is follow-up right be convenient for liquid medicine in the ration box carries out evacuation control, and then the follow-up accurate control to the liquid medicine volume that the circuit board used of being convenient for.
S200: and carrying out medicine valve treatment on the medicine adding state parameters and the preset medicine adding state parameters to obtain a medicine adding starting threshold value.
In this embodiment, the medicine adding state parameter corresponds to a medicine discharging operation mode of the quantitative box, and the medicine adding state parameter is used for representing an operation state of a medicine discharging valve of the quantitative box, for example, the medicine adding state parameter is a state parameter corresponding to a received medicine adding signal. It does to add medicine state parameter in advance the liquid medicine evacuation working method of ration box corresponds, it does to add medicine state parameter in advance the ration box carries out the operating condition that corresponds when empty liquid medicine, for example, it is the state parameter that receives the signal correspondence with the whole discharge of liquid medicine to add medicine state parameter in advance. It is right add medicine state parameter with it carries out medicine valve processing to predetermine and adds medicine state parameter, is will the current state of adding medicine of ration box and the standard state of adding medicine compare, are convenient for confirm whether ration box needs to add empty operation at present. It opens the threshold value and is used for embodying to add the medicine add state parameter with predetermine the difference degree that adds between the medicine state parameter, promptly it opens the threshold value as to add the medicine whether quantitative box needs to control the internal liquid medicine exhaust judgement standard, be convenient for follow-up right the tense of opening and close of the valve of arranging the medicine of quantitative box is controlled.
S300: and sending a medicine valve emptying signal to a medicine adding monitoring system according to the medicine adding starting threshold value so as to adjust the opening and closing state of the medicine discharging valve of the quantitative box.
In this embodiment, the medicine adding starting threshold is used for reflecting the difference degree between the medicine adding state parameter and the preset medicine adding state parameter, namely, the medicine adding starting threshold is used as a judgment standard for judging whether the quantitative box needs to discharge the internal liquid medicine. Having confirmed add the medicine and opened the size of threshold value after, be convenient for confirm whether received the signal for adding the medicine signal, thereby be convenient for to add medicine monitored control system and send corresponding liquid medicine and add the signal, and then be convenient for right the row's of ration box medicine valve is opened and is closed control accurately. The opening and closing time state comprises the duration of the medicine discharge valve in the opening and closing state, namely the opening and closing time state comprises the valve closing state quantity, the valve opening state quantity and the corresponding opening time length, and the opening time length is used for emptying the liquid medicine as much as possible. The closing duration that valve close state quantity corresponds need not to set for, only needs to receive the signal that triggers the operation of adding empty, gathers promptly add medicine state parameter, the valve of arranging the medicine can change into from closing to opening.
In the above-mentioned embodiment, confirm adding the medicine signal earlier, add the medicine state parameter promptly and predetermine the medicine valve processing that adds the medicine state parameter, be convenient for open the condition of threshold value through adding the medicine, confirm whether need add the operation of liquid medicine to the circuit board, like this, open the size of threshold value according to adding the medicine, make to add medicine monitored control system and regulate and control the opening and the closed state of the row's of ration box medicine valve, thereby be convenient for carry out accurate control to the addition of liquid medicine, the precision of adding the dose has been improved effectively.
In one embodiment, the acquiring of the medication state parameter of the circuit board includes: and acquiring the graph wire dosing level of the circuit board. In this embodiment, the dosing status parameter includes at least one of a graph wire dosing level, a graph wire dosing current, and a graph wire dosing frequency. The graph wire dosing level is a detection parameter in a trigger signal for receiving dosing of the circuit board, namely the graph wire dosing level is the level of the current moment in the dosing trigger signal, namely the graph wire dosing level is used for reflecting the voltage level of the current moment in the dosing trigger signal. Through the collection of the medicine adding level of the diagram wire, whether the quantitative box needs to empty the circuit board currently or not is facilitated, so that whether the medicine discharging valve of the quantitative box is opened or not is conveniently determined subsequently, and then the using amount of the liquid medicine added to the circuit board is conveniently and accurately controlled.
In one embodiment, the performing the drug valve processing on the dosing state parameter and the preset dosing state parameter includes: and carrying out medicine adding difference operation on the medicine adding state parameters and the preset medicine adding state parameters. In this embodiment, the medicine adding state parameter corresponds to a medicine discharging operation mode of the quantitative box, and the medicine adding state parameter is used for representing an operation state of a medicine discharging valve of the quantitative box, for example, the medicine adding state parameter is a state parameter corresponding to a received medicine adding signal. It does to add medicine state parameter in advance the liquid medicine evacuation working method of ration box corresponds, it does to add medicine state parameter in advance the ration box carries out the operating condition that corresponds when empty liquid medicine, for example, it is the state parameter that receives the signal correspondence with the whole discharge of liquid medicine to add medicine state parameter in advance. The medicine adding state parameter and the preset medicine adding state parameter are subjected to medicine adding difference operation, the difference degree between the medicine adding state parameter and the preset medicine adding state parameter is determined, namely the current medicine adding triggering condition of the quantitative box and the standard medicine adding condition are subjected to difference comparison, and the difference between the current medicine adding empty state and the standard medicine adding empty state of the quantitative box is also determined.
In one embodiment, the sending a medicine valve blank signal to a medicine adding monitoring system according to the medicine adding starting threshold value to adjust the opening and closing state of a medicine discharging valve of a quantitative box comprises: detecting whether the medicine adding starting threshold value is matched with a preset starting threshold value or not; and when the medicine adding starting threshold value is matched with the preset starting threshold value, sending a first medicine valve signal to the medicine adding monitoring system. In this embodiment, the medicine adding starting threshold is used for reflecting the difference degree between the medicine adding state parameter and the preset medicine adding state parameter, namely, the medicine adding starting threshold is used as a judgment standard for judging whether the quantitative box needs to discharge the internal liquid medicine. The preset starting threshold value is used for embodying the corresponding medicine adding starting threshold value of the quantitative box when triggering the emptying signal, namely, the medicine adding starting threshold value is used as a judgment standard parameter for the quantitative box to discharge the internal liquid medicine. Adding medicine and opening the threshold value with predetermine and open the threshold value and match, having demonstrated the current state of arranging medicine of ration box corresponds with the state of arranging medicine of standard, has demonstrated promptly the ration box needs to arrange the medicine operation at present. Like this, this moment to add medicine monitored control system sends first medicine valve signal, is convenient for open the discharge valve, in order with the liquid medicine of current storage in the ration box is discharged, realizes adding the medicine operation.
Further, when the medicine adding starting threshold value is matched with the preset starting threshold value, a first medicine valve signal is sent to the medicine adding monitoring system, and the method comprises the following steps: when it opens the threshold value more than or equal to add the medicine it opens when the threshold value to predetermine, to add medicine monitored control system sends and adds medicine and adds empty signal, so that the discharge valve of ration box is opened and is emptied liquid medicine in the ration box. In this embodiment, the medicine adding starting threshold is used for reflecting the difference degree between the medicine adding state parameter and the preset medicine adding state parameter, namely, the medicine adding starting threshold is used as a judgment standard for judging whether the quantitative box needs to discharge the internal liquid medicine. The threshold value is started in advance and is used for embodying the quantitative box is corresponding when triggering the empty signal and is opened the threshold value with adding medicine, promptly it opens the threshold value as to add medicine the quantitative box needs be with inside liquid medicine exhaust's judgement standard parameter. It opens the threshold value to add the medicine and is greater than or equal to preset opens the threshold value, has shown the current state of arranging the medicine of ration box corresponds with liquid medicine empty filling state, has shown promptly the ration box needs to carry out liquid medicine evacuation operation at present. Like this, this moment to add medicine monitored control system sends and adds medicine and adds empty signal, is convenient for open the valve of arranging the medicine, in order to incite somebody to action the liquid medicine of current storage in the ration box is whole to be discharged, realizes adding the medicine operation accurately, once only will promptly all liquid medicine in the ration box add and finish for the liquid medicine volume that adds at every turn keeps unanimous, has improved the precision of adding the dose effectively, need not to use the graduated flask to carry out the site survey of liquid medicine volume.
In another embodiment, the add null signal includes a valve opening current and a valve opening time. The valve opening current is the current for triggering the medicine discharging valve to open, namely the medicine discharging valve can be triggered to open under the condition of current. The valve opening time does it is long when arranging opening of medicine valve, specifically, the valve opening time with the continuous output time of valve opening current corresponds, is convenient for have when the valve opening current, continuously open arrange the medicine valve, also can accurate control effectively simultaneously arrange the opening state time of medicine valve, be convenient for with liquid medicine evacuation in the ration box.
Still further, when add medicine and start the threshold value and be greater than or equal to when the threshold value is started in the presetting to add medicine monitored control system sends and adds medicine and adds empty signal, so that the discharge valve of ration box is opened and is emptied the liquid medicine in the ration box, later still include: acquiring the opening and emptying time of the medicine discharge valve; detecting whether the open valve filling time is greater than or equal to the valve opening time; and when the open valve filling time is greater than or equal to the valve opening time, a medicine supplementing signal is sent to the medicine adding monitoring system so as to close the medicine discharging valve and open the medicine supplementing valve, so that the quantitative box is supplemented with liquid medicine. In this embodiment, open valve filling time does the current of arranging the medicine valve is opened long, valve opening time does the standard of arranging the medicine valve is opened long, valve opening time with the length of time corresponds during liquid medicine evacuation in the ration box, promptly valve opening time is used for embodying the length of time that ration box filling empty liquid medicine needs. The opening time and the emptying time of the open valve are more than or equal to the opening time of the valve, which indicates that the current medicine discharging time of the medicine discharging valve exceeds the standard medicine discharging time, and indicates that the liquid medicine in the quantitative box is completely emptied. Therefore, after quantitative liquid medicine in the quantitative box is emptied, a medicine supplementing signal is sent to the medicine adding monitoring system, the quantitative box is convenient to supplement the liquid medicine, the liquid medicine in the quantitative box is continuously kept at a constant amount, the liquid medicine is convenient to empty in the next quantitative mode, and the liquid medicine adding efficiency is effectively improved.
In one embodiment, the detecting whether the drug adding start threshold is matched with a preset start threshold further includes: and when the medicine adding starting threshold value is not matched with the preset starting threshold value, sending a second medicine valve signal to the medicine adding monitoring system. In this embodiment, the medicine adding starting threshold is used for reflecting the difference degree between the medicine adding state parameter and the preset medicine adding state parameter, namely, the medicine adding starting threshold is used as a judgment standard for judging whether the quantitative box needs to discharge the internal liquid medicine. The threshold value is started in advance and is used for embodying the quantitative box is corresponding when triggering the empty signal and is opened the threshold value with adding medicine, promptly it opens the threshold value as to add medicine the quantitative box needs be with inside liquid medicine exhaust's judgement standard parameter. It opens the threshold value with preset and opens the threshold value and mismatch, has shown the current state of arranging the medicine of ration box is different with liquid medicine filling empty state, has shown promptly the ration box needs to carry out liquid medicine evacuation operation and has not been triggered. Like this, to this moment add medicine monitored control system sends second medicine valve signal, in order to control the discharge valve continues to keep closing, avoids with the liquid medicine of current storage in the ration box is all discharged, ensures in time to add when follow-up needs use liquid medicine.
Further, when the medicine adding start threshold value is not matched with the preset start threshold value, a second medicine valve signal is sent to the medicine adding monitoring system, and the method comprises the following steps: when it is less than to add the medicine it opens the threshold value to predetermine when opening the threshold value, to add medicine monitored control system sends and adds the medicine hysteresis signal, so that the discharge valve of ration box continuously closes. In this embodiment, the medicine adding starting threshold is used for reflecting the difference degree between the medicine adding state parameter and the preset medicine adding state parameter, namely, the medicine adding starting threshold is used as a judgment standard for judging whether the quantitative box needs to discharge the internal liquid medicine. The threshold value is started in advance and is used for embodying the quantitative box is corresponding when triggering the empty signal and is opened the threshold value with adding medicine, promptly it opens the threshold value as to add medicine the quantitative box needs be with inside liquid medicine exhaust's judgement standard parameter. It opens the threshold to add the medicine and is less than predetermine and open the threshold, has indicated the present row's of ration box medicine state does not match with liquid medicine empty filling state, has indicated promptly the ration box need not to carry out liquid medicine evacuation operation. Like this, this moment to add medicine monitored control system sends and adds medicine stagnation signal, in order to control the discharge valve continues to keep closing, avoids with the liquid medicine of the current storage in the ration box is whole to be discharged, and liquid medicine adds the operation stagnation, ensures to in time add when follow-up needs use liquid medicine.
It can be understood that when liquid medicine is added to needs, the medicine discharge valve is opened to discharge all the liquid medicine in the quantitative box at one time, and the liquid medicine emptying operation in the quantitative box is realized, so that the liquid medicine discharge amount of each liquid medicine emptying operation is ensured to have a quantitative effect. And in the process of discharging the liquid medicine in the quantitative box, the liquid medicine discharging speed of the liquid medicine discharging valve is gradually reduced by the change of the volume of the liquid medicine in the quantitative box. However, the opening state of the medicine discharge valve has little influence on the medicine liquid discharge rate just before the medicine liquid is completely discharged, that is, the medicine liquid discharge rate is substantially the same in the case of full opening and half opening, which easily causes the closing time of the medicine discharge valve to be too long, for example, the medicine discharge valve needs to start the closing operation after the valve opening time is over, which seriously affects the production efficiency of the circuit board.
In order to improve the medicine adding efficiency, the medicine adding starting valve sends a medicine valve blank signal to a medicine adding monitoring system according to the medicine adding starting valve value so as to adjust the opening and closing state of a medicine discharging valve of the quantitative box, and then the method further comprises the following steps:
acquiring the emptying low-liquid current of the quantitative box;
detecting whether the emptying low-liquid current is less than or equal to a first preset current or not;
when the low liquid current of adding empty is less than or equal to first preset current, to add medicine monitored control system sends slowly closed signal, so that discharge valve's is slowly closed in advance.
In this embodiment, the material of the quantitative box is a conductive material, please refer to fig. 2, an empty conductive sheet 200 is disposed on the inner wall of the quantitative box 100, the empty conductive sheet 200 corresponds to the position of the low liquid level of the quantitative box 100, a through hole 102 is disposed on the quantitative box 100, a conductive wire 300 and a conductive ball 400 are disposed in the through hole 102, the conductive wire 300 is further connected to the first low liquid detection end of the chemical adding monitoring system 500, the second low liquid detection end of the chemical adding monitoring system 500 is connected to the outer surface of the quantitative box 100, the conductive ball 400 floats on the surface of the liquid chemical of the quantitative box 100, the conductive ball 400 is far away from the empty conductive sheet 200, the conductive ball 400 is connected to the empty conductive sheet 200 through the liquid chemical, so that the chemical adding monitoring system 500 can obtain the on-off current between the conductive ball 400 and the empty conductive sheet 200, i.e. the priming low liquid current. The emptying low-liquid current is the conduction current between the conductive ball 400 and the emptying conductive sheet 200, and is used for showing the on-off condition of the conductive ball 400 between the liquid medicine and the emptying conductive sheet 200. When the liquid medicine level in the quantitative box 100 is higher than the position of the emptying conductive sheet 200, the conductive ball 400 is conducted with the emptying conductive sheet 200 through the liquid medicine, so that the conductive ball 400 is conducted with the emptying conductive sheet 200, and at the moment, the emptying low-liquid current is of a high value. When the liquid medicine level in the quantitative box 100 is lower than the empty conducting strip 200, the length of the conducting wire 300 is limited, and the conducting ball 400 is separated from the liquid medicine, so that the conducting ball 400 is disconnected from the empty conducting strip 200. The first preset current is used as a current when the conductive ball 400 is separated from the liquid medicine, that is, the first preset current is used as a disconnection current between the conductive ball 400 and the emptying conductive sheet 200, that is, the first preset current corresponds to the liquid medicine low liquid level of the quantitative box 100. Like this, it is less than or equal to add empty low liquid current first preset current has shown current disconnection between conductive ball 400 in the ration box 100 and the empty conducting strip 200 of adding, has shown promptly the liquid medicine liquid level in the ration box 100 is less than add empty conducting strip 200 position, also promptly the liquid medicine liquid level in the ration box 100 is in low liquid level, this moment to add medicine monitored control system 500 and send slowly closed signal, so that it is right in advance to carry out the valve closing operation for discharge valve 600, make discharge valve 600's valve closing speed reduces, thereby makes right discharge valve 600 realizes closing slowly in advance, and then makes discharge valve 600's closing time shortens, has improved effectively the medicine adding efficiency of ration box 100 to the circuit board.
In another embodiment, when the priming low-liquid current is less than or equal to the first preset current, a slow-closing signal is sent to the dosing monitoring system 500 to cause the early slow-closing of the discharge valve 600, and then the method further comprises the following steps:
acquiring the low liquid duration of the air-added low liquid current;
detecting whether the low liquid duration is greater than or equal to a preset time;
and when the low liquid duration is greater than or equal to the preset time, sending a liquid supplementing early warning signal to the medicine adding monitoring system 500.
In this embodiment, the emptying low-liquid current is less than or equal to the first preset current, and at this time, the liquid medicine in the quantitative box 100 is at a low liquid level, specifically, the liquid medicine in the quantitative box 100 is completely discharged, and a force emptying operation is performed. The low liquid duration is a duration of a low liquid level of the liquid medicine in the quantitative box 100, the low liquid duration is used for representing an empty box duration of the quantitative box 100, and the preset time is a standard time for the quantitative box 100 to maintain an empty box, that is, the preset time is a maximum time for the quantitative box 100 to maintain an empty box. The low liquid duration time is greater than or equal to the preset time, which indicates that the empty state of the quantitative box 100 is long, i.e., indicates that the empty state of the quantitative box 100 is too long, i.e., indicates that the quantitative box 100 is not replenished for a long time, and the medicine replenishing valve 700 fails. At this moment, a liquid supplementing early warning signal is sent to the medicine adding monitoring system 500 to remind monitoring personnel of finding problems occurring in the medicine supplementing system in time so as to maintain in time.
Further, the condition of slope appears easily in quantitative box 100 in long-time use, and when quantitative box 100 took place great slope, easily result in arrange medicine valve 600 after the evacuation operation, remain more liquid medicine in the quantitative box 100, thereby result in the liquid medicine volume that quantitative box 100 added to the circuit board is few partially, and then leads to adding the medicine precision and reduces.
In order to solve the above problem, the method for detecting whether the priming low-liquid current is less than or equal to a first preset current further comprises the following steps:
when the emptying low-liquid current is larger than the first preset current, detecting whether the emptying low-liquid current is larger than or equal to a second preset current or not, wherein the second preset current is larger than the first preset current;
and when the emptying low-liquid current is greater than or equal to the second preset current, sending a box inclination alarm signal to the medicine adding monitoring system 500.
In the present embodiment, referring to fig. 2 and fig. 3, the first preset current is used as a current when the conductive ball 400 is separated from the liquid medicine, that is, the first preset current is used as a disconnection current between the conductive ball 400 and the emptying conductive sheet 200, that is, the first preset current corresponds to a low liquid level of the liquid medicine in the quantitative box 100. Under the condition that the emptying low-liquid current is larger than the first preset current, the liquid medicine level in the quantitative box 100 is normal at the moment, namely, the conductive ball 400 is still in contact with the liquid medicine. The second preset current is used as a current corresponding to the conductive ball 400 directly contacting the dummy conductive sheet 200, that is, the second preset current is used as a short-circuit current between the conductive ball 400 and the dummy conductive sheet 200, that is, the second preset current corresponds to a short-circuit state between the conductive ball 400 and the dummy conductive sheet 200. The second preset current is greater than or equal to the empty low-liquid current, which indicates that the conductive ball 400 is in direct electrical conduction with the empty conductive sheet 200 while contacting the liquid medicine, and specifically, the conductive ball 400 or the conductive wire 300 is in short circuit with the empty conductive sheet 200 through the surface of the dosing box 100. Under the condition that the quantitative box 100 is normally placed, gaps exist between the conductive balls 400 and the conductive wires 300 and the inner wall of the quantitative box 100, and the conductive balls 400 or the conductive wires 300 and the empty conductive sheet 200 have short-circuit currents, which indicates that the quantitative box 100 is inclined, so that the conductive balls 400 or the conductive wires 300 are in short circuit with the quantitative box 100. At this moment to add medicine monitored control system 500 and send the oblique alarm signal of box, be convenient for confirm the inner wall of ration box 100 with the conductor wire 300 contact, add empty low liquid current that medicine monitored control system 500 detected and be the short circuit electric current to be convenient for in time send alarm signal, so that right the slope condition of ration box 100 carries out early warning in advance, has reduced effectively ration box 100 has the remaining probability of liquid medicine after the operation of adding the sky.
Further, the detecting whether the emptying low-liquid current is greater than or equal to a second preset current further includes:
and when the emptying low-liquid current is smaller than the second preset current, returning to and executing the step S100.
In this embodiment, at this time, the emptying low-liquid current is greater than the first preset current and less than the second preset current, that is, the emptying low-liquid current is greater than the off current and less than the short-circuit current, that is, the liquid medicine in the quantitative box 100 is at the normal liquid level, and the quantitative box 100 is not tilted. Like this, this moment the liquid medicine in the ration box 100 is adding empty operation back, can directly with all liquid medicines in the ration box 100 once only evacuation to continue the operation of adding empty next time, improved effectively ration box 100 is adding the accurate control degree of medicine in-process to the liquid medicine quantity.
In one embodiment, the present application further provides a circuit board medication monitoring device, which is implemented by using the circuit board medication monitoring method described in any one of the above embodiments. In one embodiment, the circuit board medicine adding monitoring device is provided with a functional module for realizing the correspondence of each step of the circuit board medicine adding monitoring method. The circuit board medicine adding monitoring device comprises a quantitative box, a copper-plated box, a medicine discharging valve and a medicine adding monitoring main board; the quantitative box is used for storing liquid medicine for manufacturing the circuit board; the copper plating box is used for conveying liquid medicine to the substrate of the circuit board; the medicine discharging valve is respectively communicated with the copper plating box and the quantitative box; the input end of the medicine adding monitoring main board is used for receiving a medicine adding signal so as to obtain the medicine adding state parameters of the quantitative box, and the output end of the medicine adding monitoring main board is connected with the medicine discharging valve; the medicine adding monitoring mainboard is also used for carrying out medicine valve processing on the medicine adding state parameters and preset medicine adding state parameters to obtain a medicine adding starting threshold value; and sending a medicine valve emptying signal to a medicine adding monitoring system according to the medicine adding starting threshold value so as to adjust the opening and closing time of a medicine discharging valve of the quantitative box.
In this embodiment, add medicine control mainboard and confirm adding the medicine signal earlier, add medicine state parameter promptly and predetermine the medicine valve processing that adds medicine state parameter, be convenient for open the condition of threshold value through adding the medicine, confirm whether need add the operation of liquid medicine to the circuit board, like this, open the size of threshold value according to adding the medicine, make and add medicine monitored control system and regulate and control the opening and the closed condition of the discharge valve of ration box, thereby be convenient for carry out accurate control to the addition of liquid medicine, the precision of adding the dose has been improved effectively.
The above-mentioned embodiments only express several embodiments of the present invention, and the description thereof is more specific and detailed, but not construed as limiting the scope of the invention. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (10)
1. A circuit board medicine adding monitoring method is characterized by comprising the following steps:
acquiring medicine adding state parameters of the circuit board;
carrying out medicine valve treatment on the medicine adding state parameters and preset medicine adding state parameters to obtain medicine adding starting threshold values;
and sending a medicine valve emptying signal to a medicine adding monitoring system according to the medicine adding starting threshold value so as to adjust the opening and closing state of the medicine discharging valve of the quantitative box.
2. The circuit board dosage monitoring method of claim 1, wherein the obtaining dosage state parameters of the circuit board comprises:
and acquiring the graph wire dosing level of the circuit board.
3. The circuit board medicine adding monitoring method according to claim 1, wherein the medicine valve processing of the medicine adding state parameter and a preset medicine adding state parameter comprises:
and carrying out medicine adding difference operation on the medicine adding state parameters and the preset medicine adding state parameters.
4. The circuit board medicine adding monitoring method according to claim 1, wherein the sending of the medicine valve emptying signal to the medicine adding monitoring system according to the medicine adding start threshold value to adjust the opening and closing time of the medicine discharging valve of the quantitative box comprises:
detecting whether the medicine adding starting threshold value is matched with a preset starting threshold value or not;
and when the medicine adding starting threshold value is matched with the preset starting threshold value, sending a first medicine valve signal to the medicine adding monitoring system.
5. The circuit board medicine adding monitoring method according to claim 4, wherein when the medicine adding starting threshold value is matched with the preset starting threshold value, sending a first medicine valve signal to the medicine adding monitoring system comprises:
when it opens the threshold value more than or equal to add the medicine it opens when the threshold value to predetermine, to add medicine monitored control system sends and adds medicine and adds empty signal, so that the discharge valve of ration box is opened and is emptied liquid medicine in the ration box.
6. A circuit board dosing monitoring method according to claim 5, wherein the dosing fill-empty signal comprises a valve opening current and a valve opening time.
7. The circuit board dosage monitoring method of claim 6, wherein when the dosage start threshold is greater than or equal to the preset start threshold, a dosage empty signal is sent to the dosage monitoring system, so that the dosage valve of the dosing box is opened and the liquid medicine in the dosing box is emptied, and thereafter further comprising:
acquiring the opening and emptying time of the medicine discharge valve;
detecting whether the valve opening and emptying time is greater than or equal to the valve opening time or not;
and when the open valve filling time is greater than or equal to the valve opening time, a medicine supplementing signal is sent to the medicine adding monitoring system so as to close the medicine discharging valve and open the medicine supplementing valve, so that the quantitative box is supplemented with liquid medicine.
8. The method for monitoring the adding of the chemicals to the circuit board according to claim 4, wherein the detecting whether the threshold value for adding the chemicals is matched with a preset threshold value further comprises:
and when the medicine adding starting threshold value is not matched with the preset starting threshold value, sending a second medicine valve signal to the medicine adding monitoring system.
9. The circuit board dosage monitoring method of claim 8, wherein when the dosage threshold value does not match the preset threshold value, sending a second dosage valve signal to the dosage monitoring system comprises:
when it is less than to add the medicine it opens the threshold value to predetermine when opening the threshold value, to add medicine monitored control system sends and adds the medicine hysteresis signal, so that the discharge valve of ration box continuously closes.
10. A circuit board adds medicine monitoring device which characterized in that includes:
the quantitative box is used for storing the liquid medicine for manufacturing the circuit board;
the copper plating box is used for conveying liquid medicine to the substrate of the circuit board;
the medicine discharging valve is communicated with the copper plating box and the quantifying box respectively;
the input end of the medicine adding monitoring mainboard is used for receiving a medicine adding signal so as to obtain the medicine adding state parameters of the quantitative box, and the output end of the medicine adding monitoring mainboard is connected with the medicine discharging valve; the medicine adding monitoring mainboard is also used for carrying out medicine valve processing on the medicine adding state parameters and preset medicine adding state parameters to obtain a medicine adding starting threshold value; and sending a medicine valve emptying signal to a medicine adding monitoring system according to the medicine adding starting threshold value so as to adjust the opening and closing state of the medicine discharging valve of the quantitative box.
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