CN116909218B - Production monitoring system for liquid crystal display screen - Google Patents
Production monitoring system for liquid crystal display screen Download PDFInfo
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- CN116909218B CN116909218B CN202310742353.8A CN202310742353A CN116909218B CN 116909218 B CN116909218 B CN 116909218B CN 202310742353 A CN202310742353 A CN 202310742353A CN 116909218 B CN116909218 B CN 116909218B
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 191
- 239000004973 liquid crystal related substance Substances 0.000 title claims abstract description 27
- 238000012544 monitoring process Methods 0.000 title claims abstract description 26
- 238000012423 maintenance Methods 0.000 claims abstract description 16
- 238000005265 energy consumption Methods 0.000 claims abstract description 15
- 238000011156 evaluation Methods 0.000 claims description 18
- 238000000034 method Methods 0.000 claims description 17
- 238000001514 detection method Methods 0.000 claims description 16
- 230000002159 abnormal effect Effects 0.000 claims description 14
- 238000012797 qualification Methods 0.000 claims description 13
- 239000013078 crystal Substances 0.000 claims description 8
- 238000012360 testing method Methods 0.000 claims description 6
- 230000000087 stabilizing effect Effects 0.000 claims description 5
- 230000002035 prolonged effect Effects 0.000 description 3
- 239000000463 material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012795 verification Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B19/00—Programme-control systems
- G05B19/02—Programme-control systems electric
- G05B19/418—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM]
- G05B19/4184—Total factory control, i.e. centrally controlling a plurality of machines, e.g. direct or distributed numerical control [DNC], flexible manufacturing systems [FMS], integrated manufacturing systems [IMS] or computer integrated manufacturing [CIM] characterised by fault tolerance, reliability of production system
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- G—PHYSICS
- G05—CONTROLLING; REGULATING
- G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
- G05B2219/00—Program-control systems
- G05B2219/30—Nc systems
- G05B2219/31—From computer integrated manufacturing till monitoring
- G05B2219/31088—Network communication between supervisor and cell, machine group
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Abstract
The invention discloses a production monitoring system for a liquid crystal display screen, which relates to the technical field of liquid crystal screen production and comprises a monitoring center, an operation monitoring module, an equipment tracking module and an operation and maintenance management module; the monitoring center is used for comparing the voltage signal and the current signal of the module production module after being electrified with the rated voltage and the rated current, and if the voltage signal and the current signal exceed the rated voltage or the rated current, the power adjustment module is driven to adjust the ratio of the power of the module production module to the voltage difference or the current difference so as to reach a balance point, and the overload phenomenon is avoided, so that the energy consumption is increased; the equipment tracking module is used for tracking production endurance information after the module production module is overhauled; the operation and maintenance management module is used for analyzing the cruising deviation index XL according to the production cruising information stored in the database, and generating an equipment updating instruction if the cruising deviation index XL is larger than a preset deviation threshold value; to remind the manager to update the production equipment in the module production module, improve production efficiency.
Description
Technical Field
The invention relates to the technical field of liquid crystal display production, in particular to a production monitoring system for a liquid crystal display.
Background
In the manufacturing process of the liquid crystal display module, OTP or MTP burning procedures are needed to be carried out on the driving IC for correcting certain parameters, the burning process is completed based on burning voltage and time sequence which are particularly required by the driving IC, and some time sequences are only time pulses of tens of microseconds, if the voltage applied in the burning process does not meet the requirement of the IC, the IC is directly damaged or the burning is unsuccessful.
At present, if the burning parameters and the process are to be verified to be correct, a technician can only use an oscilloscope to verify whether the burning voltage and time sequence pulse meet the requirement of an IC (integrated circuit) when burning, so that the verification is complex and time-consuming, the stability of the burning voltage cannot be monitored in real time, and in addition, for an OTP (one time programmable) burnt product, once the burning is problematic, unnecessary waste is caused, and the product qualification rate is affected. Meanwhile, when the burn-in test rack is abnormal, the burn-in test of which products are still tested after the burn-in test rack is damaged cannot be monitored and tracked in real time, so that potential quality problems exist for the products; based on the defects, the invention provides a production monitoring system for a liquid crystal display screen.
Disclosure of Invention
The present invention aims to solve at least one of the technical problems existing in the prior art. Therefore, the invention provides a production monitoring system for a liquid crystal display screen.
To achieve the above object, an embodiment of the first aspect of the present invention provides a production monitoring system for a liquid crystal display, including a module production module, a voltage-current transformer module, a monitoring center, a power adjustment module, an operation monitoring module, an equipment tracking module, and an operation management module;
the module production module comprises a burning test frame which is used for performing OTP or MTP burning procedure on the driving IC to realize the manufacture of the liquid crystal display module; the voltage and current mutual inductance module is used for collecting the voltage signals and the current signals after the module production module is electrified, converting the collected voltage signals and the collected current signals into digital signals through the A/D converter and then transmitting the digital signals to the monitoring center;
the monitoring center is used for comparing the received digital signal with rated voltage and rated current of the module production module, and generating an electric power adjusting signal if the received digital signal exceeds the rated voltage or the rated current;
the power adjustment module is used for controlling the corresponding insurance inductor and the voltage stabilizing block to be opened according to the corresponding voltage difference or current difference, and adjusting the ratio of the power of the module production module to the voltage difference or current difference so as to reach an equilibrium point;
the operation monitoring module is used for collecting operation data of the module production module and carrying out load analysis, calculating to obtain a load deviation index Cs, and judging whether the module production module operates normally or not; the operation data comprise crystal oscillator frequency, energy consumption per unit time and a difference value between the temperature of the module production module and the ambient temperature in the operation process of the module production module;
the equipment tracking module is used for tracking production duration information of the module after maintenance of the production module, and storing the production duration information in a database by making a time stamp; the production duration information comprises production starting time, production ending time, power consumption in the production process, product quantity and product qualification rate;
the operation and maintenance management module is used for analyzing the cruising deviation index XL according to production cruising information with a time stamp stored in the database; if XL is larger than a preset deviation threshold, generating an equipment updating instruction to remind a manager to update production equipment in the module production module.
Further, the specific analysis process of the operation monitoring module is as follows:
collecting operation data of a module production module, marking the crystal oscillator frequency of the module production module as Z1, marking the energy consumption of unit time as Z2 and marking the difference value between the energy consumption and the ambient temperature as Z3;
calculating to obtain an operation load value GX of the module production module by using a formula GX=Z1×a1+Z2×a2+Z3×a3, wherein a1, a2 and a3 are coefficient factors;
establishing a graph of the change of the running load value GX along with time; deriving the graph to obtain a load change rate graph; the load change rate is marked FQi;
comparing the load change rate FQi with a preset change threshold; if FQi is greater than a preset change threshold, corresponding curve segments are intercepted in the corresponding curve graph for marking, and the curve segments are marked as deviating curve segments;
in a preset time period, counting the number of deviating curve segments as PZ; integrating all the deviated curve sections with time to obtain a deviated reference area M1; the load deviation index Cs is calculated using the formula cs=pz×a5+m1×a4, where a4, a5 are both coefficient factors.
Further, the operation monitoring module further includes:
comparing the load deviation index Cs with a preset deviation threshold; if Cs is greater than the preset deviation threshold, judging that the running load of the current module production module is abnormal, and generating a load abnormal signal to a monitoring center; the monitoring center receives the load abnormal signal and then drives the control alarm module to give an alarm, and controls the module production module to enter a standby mode so as to remind a manager to overhaul and maintain the module production module.
Further, the specific analysis steps of the operation and maintenance management module are as follows:
acquiring all production duration information of the module production module after maintenance according to the time stamp; counting the total production times of the module production modules as production frequency P1;
the production duration, the power consumption, the product quantity and the product qualification rate of each piece of production duration information are marked as DLi, CTi, XHi and HNi in sequence;
calculating to obtain a cruising value Xs of the module production module by using a formula xs= (HNi ×g1+ XHi ×g2)/(dli×g3+cti×g4); wherein g1, g2, g3 and g4 are coefficient factors;
performing grade judgment on the cruising value Xs to obtain an evaluation signal; counting the duty ratio of the excellent signal, the good signal, the qualified signal and the unqualified signal compared with the number of times of evaluating the signal respectively, and marking the duty ratio as Zb1, zb2, zb3 and Zb4 in sequence; and calculating the endurance deviation index XL of the module production module by using a formula XL=f×P1× (Zb4x4+Zb3x3+Zb2x2+Zb1), wherein f is a preset compensation factor.
Further, performing grade judgment on the cruising value Xs to obtain an evaluation signal; the method comprises the following steps:
comparing the endurance value Xs with a preset endurance threshold; the preset endurance threshold comprises X1, X2 and X3; and X3 is more than X2 and less than X1; when Xs is more than or equal to X1, the evaluation signal is an excellent signal; when X2 is less than or equal to Xs and less than X1, the evaluation signal is a good signal; when X3 is less than or equal to Xs and less than X2, the evaluation signal is a qualified signal; when Xs < X3, the evaluation signal is a fail signal.
Further, each module production module is provided with a quality detection module connected with the module production module, and when the liquid crystal display module is manufactured, the quality detection module is used for detecting the quality of the liquid crystal display module and storing a product detection result into a database so as to obtain the product qualification rate; the product detection result comprises passing and failing.
Compared with the prior art, the invention has the beneficial effects that:
1. the voltage and current mutual inductance module is used for collecting the voltage signals and the current signals after the module production module is electrified and converting the collected voltage signals and the collected current signals into digital signals through the A/D converter; the monitoring center compares the converted digital signal with rated voltage and rated current, and if the digital signal exceeds the rated voltage or the rated current, a power adjustment signal is generated; the power adjustment module is used for controlling the corresponding insurance inductor and the voltage stabilizing block to be opened according to the voltage difference or the current difference, and adjusting the ratio of the power of the module production module to the voltage difference or the current difference to enable the power to be matched with the voltage difference or the current difference so as to reach a balance point; the overload phenomenon is avoided, so that the energy consumption is increased; the production efficiency of the module production module is improved;
2. the operation monitoring module is used for collecting operation data of the module production module and carrying out load analysis, and calculating to obtain an operation load value GX of the module production module according to the crystal oscillator frequency, the energy consumption in unit time and the difference value between the temperature of the module production module and the ambient temperature in the operation process of the module production module, and calculating to obtain a load deviation index Cs according to the space-time variation condition of the operation load value GX; if Cs is greater than the preset deviation threshold, judging that the running load of the current module production module is abnormal, and generating a load abnormal signal to a monitoring center; to remind the manager to repair and maintain the module production module; the safe use of the module production module is ensured, and the service life of the module production module is prolonged;
3. the equipment tracking module is used for tracking production duration information after maintenance of the module production module, wherein the production duration information comprises production starting time, production ending time, power consumption in the production process, product quantity and product qualification rate; the operation and maintenance management module is used for analyzing the cruising deviation index XL according to the production cruising information with the time stamp stored in the database; if the endurance deviation index XL is larger than a preset deviation threshold, generating an equipment updating instruction to remind a manager to update production equipment in the module production module; and the production efficiency is improved.
Drawings
In order to more clearly illustrate the embodiments of the invention or the technical solutions in the prior art, the drawings that are required in the embodiments or the description of the prior art will be briefly described, it being obvious that the drawings in the following description are only some embodiments of the invention, and that other drawings may be obtained according to these drawings without inventive effort for a person skilled in the art.
Fig. 1 is a schematic block diagram of a production monitoring system for a liquid crystal display according to the present invention.
Detailed Description
The technical solutions of the present invention will be clearly and completely described in connection with the embodiments, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
As shown in fig. 1, a production monitoring system for a liquid crystal display screen comprises a module production module, a voltage and current mutual inductance module, a monitoring center, a power adjustment module, an operation monitoring module, an alarm module, a quality detection module, a database, an equipment tracking module and an operation and maintenance management module;
the module production module comprises a burning test frame which is used for performing OTP or MTP burning procedure on the driving IC to realize the manufacture of the liquid crystal display module;
the voltage and current mutual inductance module is connected with the module production module and is used for collecting voltage signals and current signals after the module production module is electrified and transmitting the collected voltage signals and current signals to the A/D converter; the A/D converter receives the voltage signal and the current signal, converts the voltage signal and the current signal into digital signals, transmits the converted digital signals to the monitoring center, compares the digital signals with rated voltage and rated current of the module production module after the monitoring center receives the converted digital signals, and generates an electric power adjusting signal if the voltage or the rated current is exceeded;
responding to the power adjustment signal, wherein the monitoring center is used for driving the power adjustment module to adjust voltage or current; the power adjustment module is used for controlling the corresponding insurance inductor and the corresponding voltage stabilizing block to be opened according to the voltage difference between the current voltage and the rated voltage or the current difference between the current and the rated current, and adjusting the ratio of the power of the module production module to the voltage difference or the current difference to enable the power to be matched with the voltage difference or the current difference so as to reach a balance point; the module production module is ensured to work under rated voltage or rated current, so that overload phenomenon is avoided, and energy consumption is increased; the production efficiency of the module production module is improved;
the operation monitoring module is used for collecting operation data of the module production module and carrying out load analysis, calculating to obtain a load deviation index Cs, and judging whether the module production module operates normally or not; the operation data comprise crystal oscillator frequency, energy consumption per unit time and difference between the temperature of the module production module and the ambient temperature in the operation process of the module production module;
the specific analysis process of the operation monitoring module is as follows:
collecting operation data of a module production module, marking the crystal oscillator frequency of the module production module as Z1, marking the energy consumption of unit time as Z2 and marking the difference value between the energy consumption and the ambient temperature as Z3;
calculating to obtain an operation load value GX of the module production module by using a formula GX=Z1×a1+Z2×a2+Z3×a3, wherein a1, a2 and a3 are coefficient factors;
establishing a graph of the change of the running load value GX along with time; deriving the graph to obtain a load change rate graph; the load change rate is marked FQi;
comparing the load change rate FQi with a preset change threshold; if FQi is greater than a preset change threshold, corresponding curve segments are intercepted in the corresponding curve graph for marking, and the curve segments are marked as deviating curve segments;
in a preset time period, counting the number of deviating curve segments as PZ; integrating all the deviated curve sections with time to obtain a deviated reference area M1; calculating a load deviation index Cs by using a formula Cs=Pz×a5+M1×a4, wherein a4 and a5 are coefficient factors;
comparing the load deviation index Cs with a preset deviation threshold, if Cs is larger than the preset deviation threshold, judging that the running load of the current module production module is abnormal, and generating a load abnormal signal to a monitoring center;
the monitoring center drives the control alarm module to give an alarm after receiving the load abnormal signal, and controls the module production module to enter a standby mode so as to remind a manager to overhaul and maintain the module production module; the safe use of the module production module is ensured, the service life of the module production module is prolonged, and the production efficiency of the module production module is further improved;
each module production module is provided with a quality detection module connected with the module production module, and when the liquid crystal display module is manufactured, the quality detection module is used for detecting the quality of the liquid crystal display module and storing the product detection result into a database so as to obtain the product qualification rate; the product detection result comprises qualification and disqualification;
the equipment tracking module is used for tracking production duration information after the module production module is overhauled, and storing the production duration information in a database by making a time stamp; the production duration information comprises production start time, production end time, power consumption in the production process, product quantity and product qualification rate;
the operation and maintenance management module is connected with the database and is used for carrying out the continuous voyage deviation index XL analysis according to the production continuous voyage information with the time stamp stored in the database, and the specific analysis steps are as follows:
acquiring all production duration information of the module production module after maintenance according to the time stamp; counting the total production times of the module production modules as production frequency P1;
the production duration, the power consumption, the product quantity and the product qualification rate of each piece of production duration information are marked as DLi, CTi, XHi and HNi in sequence; calculating to obtain a continuous voyage value Xs of the module production module by using a formula Xs= (HNi ×g1+ XHi ×g2)/(DLi×g3+CTi×g4); wherein g1, g2, g3 and g4 are coefficient factors;
the cruising value Xs is subjected to grade judgment to obtain an evaluation signal, which is specifically as follows: comparing the endurance value Xs with a preset endurance threshold; the preset endurance threshold comprises X1, X2 and X3; and X3 is more than X2 and less than X1;
when Xs is more than or equal to X1, the evaluation signal is an excellent signal; when X2 is less than or equal to Xs and less than X1, the evaluation signal is a good signal; when X3 is less than or equal to Xs and less than X2, the evaluation signal is a qualified signal; when Xs is less than X3, the evaluation signal is a disqualified signal;
counting the duty ratio of the excellent signal, the good signal, the qualified signal and the unqualified signal compared with the number of times of evaluating the signal respectively, and marking the duty ratio as Zb1, zb2, zb3 and Zb4 in sequence;
calculating to obtain a cruising deviation index XL of the module production module by using a formula XL=f×P1× (Zb4x4+Zb3×3+Zb2×2+Zb1), wherein f is a preset compensation factor;
comparing the endurance deviation index XL with a preset deviation threshold; if the endurance deviation index XL is larger than a preset deviation threshold, generating an equipment updating instruction to remind a manager to update production equipment in the module production module; and the production efficiency is improved.
The above formulas are all formulas with dimensions removed and numerical values calculated, the formulas are formulas which are obtained by acquiring a large amount of data and performing software simulation to obtain the closest actual situation, and preset parameters and preset thresholds in the formulas are set by a person skilled in the art according to the actual situation or are obtained by simulating a large amount of data.
The working principle of the invention is as follows:
the production monitoring system for the liquid crystal display screen is characterized in that when the production monitoring system works, the voltage-current mutual inductance module is used for collecting voltage signals and current signals after the module production module is electrified and converting the collected voltage signals and current signals into digital signals through the A/D converter; the monitoring center compares the converted digital signal with rated voltage and rated current, and if the digital signal exceeds the rated voltage or the rated current, a power adjustment signal is generated; the power adjustment module is used for controlling the corresponding insurance inductor and the voltage stabilizing block to be opened according to the voltage difference or the current difference, and adjusting the ratio of the power of the module production module to the voltage difference or the current difference to enable the power to be matched with the voltage difference or the current difference so as to reach a balance point; the overload phenomenon is avoided, so that the energy consumption is increased; the production efficiency of the module production module is improved;
the operation monitoring module is used for collecting operation data of the module production module and carrying out load analysis, calculating to obtain an operation load value GX of the module production module according to the crystal oscillator frequency, the energy consumption in unit time and the difference value between the temperature of the module production module and the ambient temperature in the operation process of the module production module, and calculating to obtain a load deviation index Cs according to the space-time variation condition of the operation load value GX; if Cs is greater than the preset deviation threshold, judging that the running load of the current module production module is abnormal, and generating a load abnormal signal to a monitoring center; to remind the manager to repair and maintain the module production module; the safe use of the module production module is ensured, and the service life of the module production module is prolonged;
each module production module is provided with a quality detection module connected with the module production module, and when the liquid crystal display module is manufactured, the quality detection module is used for detecting the quality of the liquid crystal display module and storing the product detection result into a database so as to obtain the product qualification rate; the equipment tracking module is used for tracking production duration information after the module production module is overhauled, and the production duration information comprises production starting time, production ending time, power consumption in the production process, the number of products and the product percent of pass; the operation and maintenance management module is used for analyzing the cruising deviation index XL according to the production cruising information with the time stamp stored in the database; if the endurance deviation index XL is larger than a preset deviation threshold, generating an equipment updating instruction to remind a manager to update production equipment in the module production module; and the production efficiency is improved.
In the description of the present specification, the descriptions of the terms "one embodiment," "example," "specific example," and the like, mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the present invention. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiments or examples. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.
The preferred embodiments of the invention disclosed above are intended only to assist in the explanation of the invention. The preferred embodiments are not intended to be exhaustive or to limit the invention to the precise form disclosed. Obviously, many modifications and variations are possible in light of the above teaching. The embodiments were chosen and described in order to best explain the principles of the invention and the practical application, to thereby enable others skilled in the art to best understand and utilize the invention. The invention is limited only by the claims and the full scope and equivalents thereof.
Claims (3)
1. The production monitoring system for the liquid crystal display screen is characterized by comprising a module production module, a voltage and current mutual inductance module, a monitoring center, an electric power adjustment module, an operation monitoring module, an equipment tracking module and an operation and maintenance management module;
the module production module comprises a burning test frame which is used for performing OTP or MTP burning procedure on the driving IC to realize the manufacture of the liquid crystal display module; the voltage and current mutual inductance module is used for collecting the voltage signals and the current signals after the module production module is electrified, converting the collected voltage signals and the collected current signals into digital signals through the A/D converter and then transmitting the digital signals to the monitoring center;
the monitoring center is used for comparing the received digital signal with rated voltage and rated current of the module production module, and generating an electric power adjusting signal if the received digital signal exceeds the rated voltage or the rated current;
the power adjustment module is used for controlling the corresponding insurance inductor and the voltage stabilizing block to be opened according to the corresponding voltage difference or current difference, and adjusting the ratio of the power of the module production module to the voltage difference or current difference so as to reach an equilibrium point;
the operation monitoring module is used for collecting operation data of the module production module and carrying out load analysis to judge whether the operation of the module production module is normal or not; the specific analysis process is as follows:
collecting operation data of a module production module, wherein the operation data comprises crystal oscillator frequency, energy consumption per unit time and a difference value between the temperature of the module production module and the ambient temperature of the module production module;
marking the crystal oscillator frequency of the module production module in the operation process as Z1, marking the energy consumption per unit time as Z2 and marking the difference value between the energy consumption per unit time and the ambient temperature as Z3;
calculating to obtain an operation load value GX of the module production module by using a formula GX=Z1×a1+Z2×a2+Z3×a3, wherein a1, a2 and a3 are coefficient factors;
establishing a graph of the change of the running load value GX along with time; deriving the graph to obtain a load change rate graph; the load change rate is marked FQi;
comparing the load change rate FQi with a preset change threshold; if FQi is greater than a preset change threshold, corresponding curve segments are intercepted in the corresponding curve graph for marking, and the curve segments are marked as deviating curve segments;
in a preset time period, counting the number of deviating curve segments as PZ; integrating all the deviated curve sections with time to obtain a deviated reference area M1; calculating a load deviation index Cs by using a formula Cs=Pz×a5+M1×a4, wherein a4 and a5 are coefficient factors;
comparing the load deviation index Cs with a preset deviation threshold; if Cs is greater than the preset deviation threshold, judging that the running load of the current module production module is abnormal, and generating a load abnormal signal to a monitoring center;
the monitoring center receives the load abnormal signal and then drives the control alarm module to give an alarm, and controls the module production module to enter a standby mode so as to remind a manager of overhauling and maintaining the module production module;
the equipment tracking module is used for tracking production duration information of the module after maintenance of the production module, and storing the production duration information in a database by making a time stamp; the production duration information comprises production start time, production end time, power consumption in the production process, product quantity and product qualification rate;
the operation and maintenance management module is used for analyzing the cruising deviation index XL according to production cruising information with a time stamp stored in the database; the specific analysis steps are as follows:
acquiring all production duration information of the module production module after maintenance according to the time stamp; counting the total production times of the module production modules as production frequency P1;
the production duration, the power consumption, the product quantity and the product qualification rate of each piece of production duration information are marked as DLi, CTi, XHi and HNi in sequence;
calculating to obtain a cruising value Xs of the module production module by using a formula xs= (HNi ×g1+ XHi ×g2)/(dli×g3+cti×g4); wherein g1, g2, g3 and g4 are coefficient factors;
performing grade judgment on the cruising value Xs to obtain an evaluation signal; counting the duty ratio of the excellent signal, the good signal, the qualified signal and the unqualified signal compared with the number of times of evaluating the signal respectively, and marking the duty ratio as Zb1, zb2, zb3 and Zb4 in sequence;
calculating to obtain a cruising offset index XL of the module production module by using a formula XL=f×P1× (Zb4x4+Zb3x3+Zb2x2+Zb1), wherein f is a preset compensation factor;
comparing the endurance deviation index XL with a preset deviation threshold; if the endurance deviation index XL is larger than a preset deviation threshold, generating an equipment updating instruction to remind a manager to update production equipment in the module production module.
2. The production monitoring system for a liquid crystal display according to claim 1, wherein the evaluation signal is obtained by performing a level evaluation on the cruising value Xs; the method comprises the following steps:
comparing the endurance value Xs with a preset endurance threshold; the preset endurance threshold comprises X1, X2 and X3; and X3 is more than X2 and less than X1; when Xs is more than or equal to X1, the evaluation signal is an excellent signal;
when X2 is less than or equal to Xs and less than X1, the evaluation signal is a good signal; when X3 is less than or equal to Xs and less than X2, the evaluation signal is a qualified signal; when Xs < X3, the evaluation signal is a fail signal.
3. The production monitoring system for a liquid crystal display according to claim 1, wherein each module production module is provided with a quality detection module connected with the module production module, and the quality detection module is used for detecting the quality of the liquid crystal display module after the liquid crystal display module is manufactured, and storing the product detection result into a database so as to obtain the product qualification rate; the product detection result comprises passing and failing.
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