A remote monitoring system for wireless synchronous pen-type pH electrodes

Abstract

The invention discloses a remote monitoring system for a wireless synchronous pen-type pH electrode, which belongs to the technical field of sensors and automatic monitoring, and is used to solve the problems that the data collection of the pen-type pH electrode is difficult to fit the rhythm of the production line, the collection frequency and transmission delay are dynamically adjusted, and the efficiency of data analysis is low; the system comprises: a pH electrode collection module, a transmission detection module, a monitoring platform and a personnel terminal module; the pH electrode collection frequency is dynamically adjusted by comprehensively considering factors such as raw material temperature, humidity, stirring rate and ingredient addition time; the transmission detection module encapsulates and encrypts the pH value data and transmits it wirelessly to the monitoring platform; the monitoring platform decrypts and analyzes the received data and calculates the abnormal evaluation value, and the personnel terminal module is responsible for responding to instructions, optimizing the transmission channel or arranging personnel to adjust the corrected pH value on site; the system effectively solves the problems of raw material pH value in data collection, transmission and analysis and processing, and improves the accuracy, timeliness and reliability of pH monitoring in the production process.

Description

Technical Field

[0001] The invention belongs to the technical field of sensors and automatic monitoring, and in particular relates to a remote monitoring system for a wireless synchronous pen-type pH electrode. Background Art

[0002] At present, the competition in the food processing industry is fierce. Consumers have extremely high requirements for quality. The food production line is high-speed and precise. Each process is closely linked and cannot afford mistakes. The fermentation and preparation links are even more critical. For example, in yogurt fermentation and juice preparation, if the pH value is slightly deviated, the product may have poor flavor, loss of nutrients or even deterioration. In this situation, higher requirements are put forward for the monitoring of raw material pH, especially in the following aspects that need to be improved urgently; Data collection: In order to capture the changes in the pH value of raw materials in real time, the pen-type pH electrode must fit the rhythm of the production line and the collection frequency must be reasonably set to provide an accurate basis for process control; Data transmission: When the data collected by the pen-type pH electrode is transmitted, it is necessary to detect and adjust the transmission data to avoid transmission delays, which makes it difficult for workers to adjust the process in time and affects product quality; In terms of data analysis and processing: With the influx of massive data, the platform needs to quickly identify anomalies after receiving them and notify relevant staff to make adjustments. For this purpose, we propose a remote monitoring system for wireless synchronous pen-type pH electrodes. Summary of the invention

[0003] The object of the present invention is to provide a remote monitoring system for a wireless synchronous pen-type pH electrode to solve the problems raised in the above background technology.

[0004] To achieve the above object, the present invention provides the following technical solutions: a remote monitoring system for a wireless synchronous pen-type pH electrode, comprising: a pH electrode acquisition module, a transmission detection module, a monitoring platform and a personnel terminal module; pH electrode acquisition module: the acquisition frequency of the pen-type pH electrode is divided into grades, and the acquisition and evaluation value is obtained by comprehensive analysis of the raw material temperature, humidity, stirring rate and ingredient addition time. The acquisition and evaluation product is obtained according to the change trend of the acquisition and evaluation value over time. The corresponding acquisition frequency grade is matched according to the acquisition and evaluation product to adjust the acquisition frequency of the pen-type pH electrode for the raw material pH value, and the collected raw material pH value is sent to the data transmission module; Transmission detection module: encapsulates the pH values ​​of raw materials received from the same batch at different collection times into pH data packets, encrypts the pH data packets, and sends them to the detection platform via wireless communication after encryption; The monitoring platform includes: a decryption unit, a transmission detection unit and an analysis unit; Decryption unit: decrypts and verifies the received pH data packet, extracts the number of bytes in the pH data packet, the strength of the transmitted signal, the time difference value, and the pH value of the raw material at each collection moment; Transmission detection unit: Analyze the number of bytes of pH data packets, the strength of the transmitted signal and the time difference value to obtain a transmission evaluation value. If the transmission evaluation value is greater than or equal to the preset transmission evaluation threshold, a transmission channel change instruction is generated and sent to the personnel terminal module; Analysis unit: Analyze the change trend of the pH value of the raw material over time to obtain the abnormal evaluation value. If the abnormal evaluation value is greater than the corresponding threshold, the pH data packet is sent to the personnel terminal module and a personnel intervention and deployment instruction is simultaneously generated and sent to the personnel terminal module; Personnel terminal module: used to respond to instructions for changing transmission channels and personnel intervention and deployment instructions.

[0005] Preferably, the specific process of classifying the sampling frequency of the pen-type pH electrode and comprehensively analyzing the raw material temperature, humidity, stirring rate and ingredient addition time to obtain the sampling value is as follows: The pH acquisition frequency of the pen-type pH electrode for the processed raw materials is divided into three acquisition frequency levels, including: low frequency level, medium frequency level and high frequency level. The initial acquisition frequency of the pen-type pH electrode is set to the medium frequency level. For each acquisition moment, the temperature value and humidity value of the raw material at the acquisition moment are obtained, and several temperature intervals and humidity intervals are set. Each temperature interval corresponds to a preset raw material temperature influence coefficient, and each humidity interval corresponds to a preset humidity influence coefficient. The temperature value and humidity value of the raw material at the acquisition moment are matched with the corresponding temperature interval and humidity interval, and the corresponding influence coefficient is output, and multiplied by the corresponding influence coefficient to obtain the temperature shadow value WZ and the wet shadow value SZ corresponding to the acquisition moment; For each collection moment, the stirring rate of the raw material at the collection moment is obtained, the standard stirring rate of the raw material is preset, and the stirring rate of the raw material at the collection moment is subtracted from the standard speed of the corresponding raw material to obtain the stirring deviation rate; multiple stirring deviation rate intervals are preset, and each stirring deviation rate interval corresponds to a stirring deviation influence value, and the stirring deviation rate at the collection moment is matched with multiple stirring deviation rate intervals, and the stirring deviation influence value corresponding to the successfully matched stirring deviation rate interval is output, which is recorded as the stirring shadow value JZ; The moment of adding ingredients to the raw material preparation is recorded as the operation moment. For each collection moment, the time interval from the operation moment is obtained, which is recorded as the operation interval. Multiple operation interval intervals are preset, and each operation interval interval corresponds to an operation impact value. The operation interval of the collection moment is matched with multiple operation interval intervals, and the operation impact value corresponding to the successfully matched operation interval interval is output, which is recorded as the operation shadow value CZ; After normalizing the temperature shadow value WZ, wet shadow value SZ, stirring shadow value JZ and manipulation shadow value CZ, they are entered into the formula: CPZ=WZ×a1+SZ×a2+JZ×a3+CZ×a4 to obtain the evaluation value CPZ, where a1, a2, a3 and a4 are preset weight coefficients.

[0006] Preferably, the specific process of obtaining the evaluation product according to the analysis of the changing trend of the evaluation value over time is: Establish a curve graph of the change of the sampling and evaluation value over time, substitute the sampling and evaluation value at each sampling moment into the curve graph, and connect them in sequence through the curve in chronological order to obtain the sampling and evaluation value change curve, preset several sampling frequency update moments, draw a preset sampling and evaluation high threshold line and a preset sampling and evaluation low threshold line in the curve graph, and record the part of the sampling and evaluation value change curve that exceeds the preset sampling and evaluation high threshold line and the area enclosed by the preset sampling and evaluation high threshold line as the rising area. If the sampling and evaluation value corresponding to the update moment is higher than the preset sampling and evaluation high threshold line, draw a vertical line from the sampling and evaluation value point corresponding to the update moment to the preset sampling and evaluation high threshold line. At this time, the rising area is the area enclosed by the vertical line, the part of the sampling and evaluation value change curve that exceeds the preset sampling and evaluation high threshold line, and the preset sampling and evaluation high threshold line. The area enclosed by the part of the sampling value change curve that is lower than the preset sampling value lower threshold line and the preset sampling value lower threshold line is recorded as the downward area. If the sampling value corresponding to the update time is lower than the preset sampling value lower threshold line, a vertical line is drawn from the sampling value point corresponding to the update time to the preset sampling value lower threshold line. At this time, the downward area is the area enclosed by the vertical line, the part of the sampling value change curve that is lower than the preset sampling value lower threshold line, and the preset sampling value lower threshold line. When the update time is reached, all the rising areas from the last update time to the current update time are summed up to get the total inspection product ZS, and all the falling areas are summed up to get the total inspection product ZJ. The formula: CJ=ZS×b1-ZJ×b2 is used to get the collection and evaluation product CJ, where b1 and b2 are preset weight coefficients.

[0007] Preferably, the specific process of matching the sampling frequency level according to the sampling evaluation product and sending the collected raw material pH value to the data transmission module is: Three sampling and evaluation intervals are preset, namely: low sampling and evaluation interval, medium sampling and evaluation interval and high sampling and evaluation interval; each sampling and evaluation interval corresponds to a sampling frequency level, the sampling and evaluation product at the current update moment is matched with the three sampling and evaluation intervals, the corresponding sampling frequency level is output, and this sampling frequency level is used as the collection frequency level of the pen-type pH electrode for the pH in the processed raw materials from the current collection update moment to the next update moment, and the raw material pH value collected at each collection moment and the corresponding collection moment are sent to the data transmission module.

[0008] Preferably, the transmission detection module encapsulates the pH values ​​of the raw materials received from the same batch at different collection times into pH data packets, and encrypts the pH data packets as follows: The pH values ​​of the raw materials obtained at different collection times of the same batch are orderly integrated according to the time sequence and encapsulated into pH data packets. For each group of pH data packets, the number of bytes of the data packet is calculated, and the sending time and sending signal strength of the data packet are recorded; Mark the midnight of each day as the time reference point, calculate the interval between the sending time and the time reference point for each group of pH data packets, quantify the interval in seconds to get the time difference value, preset the time difference value, number of bytes, and signal strength model conversion coefficient respectively, multiply the time difference value, number of bytes of pH data packets, and sending signal strength by the corresponding conversion coefficients respectively to get the time modulus value, character modulus value, and strong modulus value; establish a frustum encryption model, substitute the time modulus value into the frustum encryption model as the radius of the bottom circle of the frustum, the character modulus value as the height of the frustum, and the strong modulus value as the radius of the bottom circle of the frustum to draw the frustum, and get the frustum figure, use the frustum figure as the encrypted frustum figure, and use the time difference value, number of bytes of pH data packets, and sending signal strength corresponding to the pH data packet as the key to encrypt the pH data packet, and after the encryption is completed, send the pH data packet in ciphertext form and the accompanying frustum figure information to the detection platform together.

[0009] Preferably, the decryption unit works as follows: For each group of pH data packets received, the decryption unit obtains the encrypted frustum figure corresponding to the pH data packet, calculates the lower base circle radius, height and upper base circle radius of the encrypted frustum figure, and obtains the time modulus value, character modulus value and strong modulus value. The time difference value, the number of bytes of the pH data packet and the transmission signal strength are obtained by dividing the time modulus value, character modulus value and strong modulus value by the corresponding conversion coefficient. The received calculated time difference value, the number of bytes of the pH data packet and the transmission signal strength are matched and verified with the time difference value, the number of bytes of the pH data packet and the transmission signal strength corresponding to the key of the pH data packet. After successful verification, the raw material pH value at each collection time in the pH data packet is extracted.

[0010] Preferably, the transmission detection unit works as follows: Add the time difference value corresponding to the pH data packet calculated by the decryption unit to the time reference point to obtain the pH data packet sending time, obtain the pH data packet receiving time, and subtract the pH data packet receiving time from the corresponding pH data packet sending time to obtain the sending duration FC; Recalculate the number of bytes of the decrypted pH data packet, record it as the number of received bytes, subtract the number of bytes of the pH data packet calculated by the decryption unit from the number of received bytes, obtain a byte deviation value ZP, preset a byte deviation threshold, compare the byte deviation value with the corresponding threshold, if the byte deviation value is greater than or equal to the preset byte deviation threshold, generate a pH data packet resending instruction corresponding to this sending time and send it to the transmission encryption module, when the transmission encryption module receives the pH data packet resending instruction corresponding to a certain sending time, resend the data packet corresponding to the sending time to the monitoring platform; Obtain the signal strength value when the pH data packet is received, and subtract the signal strength of the pH data packet sent calculated by the decryption unit from the signal strength value when the pH data packet is received to obtain a signal difference value XC; After normalizing the transmission time FC, the byte deviation value ZP and the signal difference value XC, they are put into the preset formula: CPZ=FC×c1+ZP×c2+XC×c3 to obtain the transmission evaluation value CPZ, where c1, c2, and c3 are preset weight coefficients; A transmission evaluation threshold is preset, and the transmission evaluation value is compared with the preset transmission evaluation threshold. If the transmission evaluation value is greater than or equal to the preset transmission evaluation threshold, a transmission channel change instruction is generated and sent to the personnel terminal module.

[0011] Preferably, the working mode of the analysis unit is: Establish a line graph of the change of raw material pH over time, obtain the raw material pH value corresponding to each collection time in the pH data packet, and substitute it into the line graph, and at the same time, connect the raw material pH value points corresponding to adjacent collection times in chronological order through line segments to obtain the raw material pH change line; Two threshold lines are preset, namely, the raw material pH upper threshold line and the raw material pH lower threshold line. The area where the raw material pH change line is lower than the raw material pH lower threshold line and the area enclosed by it, or the area where the raw material pH change line is higher than the raw material pH upper threshold line and the area enclosed by the raw material pH upper threshold line is uniformly recorded as the abnormal area. All abnormal areas are summed to obtain the abnormal total product PJ; The raw material pH value point corresponding to the portion between the raw material pH upper threshold line and the raw material pH lower threshold line in the raw material pH change broken line is recorded as a normal point, and all the raw material pH value points of the raw material pH change broken line are obtained, and the positive percentage value PZ is obtained by dividing the normal point by all the raw material pH value points of the raw material pH change broken line; The pH value corresponding to each acquisition time in the pH data packet is calculated using the standard deviation formula, and the pH standard deviation value of this group of pH data packets is obtained, which is recorded as the pH fluctuation value PB; After normalizing the abnormal total product PJ, the positive ratio value PZ and the pH fluctuation value PB, enter them into the formula: , obtain the abnormal evaluation value YPZ, where d1, d2, and d3 are preset weight coefficients. Each group of pH data packets is preset to have a corresponding abnormal evaluation threshold. The abnormal evaluation value of the pH data packet is compared with the corresponding abnormal evaluation threshold. If the abnormal evaluation value of the pH data packet is greater than the corresponding abnormal evaluation threshold, the pH data packet is sent to the personnel terminal module and a personnel intervention deployment instruction is synchronously generated and sent to the personnel terminal module.

[0012] Preferably, the working mode of the personnel terminal module is: When receiving the instruction to change the transmission channel, the staff selects a wireless transmission channel with better network speed and larger bandwidth than the original wireless transmission channel to transmit the data of the detection unit; When a personnel intervention adjustment instruction is received, a staff member is dispatched to the raw material processing equipment site to adjust and correct the pH of the raw material, and a pH data packet corresponding to the personnel intervention adjustment instruction is sent to the staff member's mobile phone.

[0013] Compared with the prior art, the present invention has the following beneficial effects: (1) A remote monitoring system for a wireless synchronous pen-type pH electrode obtains a sampling value and a sampling product by analyzing multiple factors such as raw material temperature, humidity, stirring rate, and ingredient addition time through a pH electrode acquisition module. The sampling frequency level is dynamically matched with the sampling product to realize intelligent adjustment of the sampling frequency of the pen-type pH electrode. This method can more accurately capture the changes in the pH value of the raw material, especially in food processing. The detection frequency can be adjusted in real time according to complex working conditions such as yogurt fermentation and juice preparation, providing an accurate basis for process control, effectively avoiding the omission of key information caused by unreasonable acquisition frequency, ensuring the accurate control of the pH value of the raw material, and improving the stability of product quality.

[0014] (2) This wireless synchronous pen-type pH electrode remote monitoring system adopts a unique encryption and transmission detection mechanism through a transmission detection module; the raw material pH value is encapsulated into a pH data packet and encrypted, and a frustum encryption model is used to combine the time difference value, the number of bytes, and the signal strength as a key to enhance data security; at the same time, during the transmission process, the transmission evaluation value is obtained by calculating the transmission time, the byte deviation value, and the signal difference value, and the transmission quality is quantitatively evaluated. Transmission problems can be discovered and handled in a timely manner. When the transmission evaluation value exceeds the threshold, an instruction to change the transmission channel is automatically generated to ensure stable and efficient data transmission, avoid transmission delays and data loss, and enable production workers to obtain accurate data in a timely manner to adjust the process, thereby reducing the impact of data transmission problems on product quality.

[0015] (3) This wireless synchronous pen-type pH electrode remote monitoring system can establish a line graph of the change of raw material pH over time through the analysis unit of the monitoring platform, and obtain the abnormal evaluation value by calculating the total abnormal product, positive proportion and pH fluctuation value index, so as to quickly identify the abnormal fluctuation of raw material pH value; when the abnormal evaluation value of the pH data packet exceeds the threshold, the data packet can be sent to the personnel terminal module in time and a personnel intervention and deployment instruction can be generated to assist the staff in making accurate decisions, realize effective monitoring and timely adjustment of the pH value of the raw materials, reduce product quality risks, and ensure product quality consistency.

[0016] (4) This wireless synchronous pen-type pH electrode remote monitoring system forms a complete closed loop from data collection, transmission to analysis and processing through the entire remote monitoring system. The modules work together to effectively solve the many problems faced by the food processing industry in raw material pH monitoring. It improves the accuracy, timeliness and reliability of raw material pH monitoring during the production process, helps to optimize the production process, improve production efficiency, enhance the competitiveness of enterprises in the market, meet consumers' demand for high-quality food, and promote the food processing industry to develop in the direction of intelligent and precise production. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a flowchart of the present invention; Figure 2 A curve diagram showing changes in the evaluation value over time of the present invention; Figure 3 It is a line graph showing the change of pH of the raw material of the present invention over time. DETAILED DESCRIPTION

[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0019] Embodiment 1

[0020] See also Figure 1 - Figure 3 , the present invention provides a remote monitoring system for a wireless synchronous pen-type pH electrode, including a pH electrode acquisition module, a transmission detection module, a monitoring platform, and a personnel terminal module; The pH electrode acquisition module classifies the acquisition frequency of the pen-type pH electrode, comprehensively analyzes the raw material temperature, humidity, stirring rate and ingredient addition time to obtain the acquisition value, and analyzes the change relationship between the acquisition value and time to obtain the acquisition product. The acquisition frequency level is matched according to the acquisition product, and the acquisition frequency of the pen-type pH electrode is dynamically adjusted, and the collected raw material pH value is sent to the data transmission module. The specific process is as follows: The pH acquisition frequency of the pen-type pH electrode for the processed raw materials is divided into three acquisition frequency levels, including: low frequency level, medium frequency level and high frequency level. The initial acquisition frequency of the pen-type pH electrode is set to the medium frequency level. For each acquisition moment, the temperature value and humidity value of the raw material at the acquisition moment are obtained, and several temperature intervals and humidity intervals are set. Each temperature interval corresponds to a preset raw material temperature influence coefficient, and each humidity interval corresponds to a preset humidity influence coefficient. The temperature value and humidity value of the raw material at the acquisition moment are matched with the corresponding temperature interval and humidity interval, and the corresponding influence coefficient is output, and multiplied by the corresponding influence coefficient to obtain the temperature shadow value WZ and the wet shadow value SZ corresponding to the acquisition moment; For each collection moment, the stirring rate of the raw material at the collection moment is obtained, and a standard stirring rate of the raw material is preset. The stirring rate of the raw material at the collection moment is subtracted from the standard speed of the corresponding raw material to obtain the stirring deviation rate, wherein if the stirring rate of the raw material at the collection moment is greater than the standard speed of the corresponding raw material, the stirring deviation rate is a positive value, and if the stirring rate of the raw material at the collection moment is less than the standard speed of the corresponding raw material, the stirring deviation rate is a negative value; a plurality of stirring deviation rate intervals are preset, and each stirring deviation rate interval corresponds to a stirring deviation influence value, wherein the greater the lower and upper bounds corresponding to the stirring deviation rate interval, the greater the corresponding stirring deviation influence value, and the stirring deviation rate at the collection moment is matched with a plurality of stirring deviation rate intervals, and the stirring deviation influence value corresponding to the successfully matched stirring deviation rate interval is output, which is recorded as the stirring shadow value JZ; The moment when ingredients are added to the raw material preparation is recorded as the operation moment. For each collection moment, the time interval from the operation moment is obtained, which is recorded as the operation interval. Multiple operation interval intervals are preset, and each operation interval interval corresponds to an operation impact value. The larger the lower limit value and the upper limit value in the operation interval interval, the smaller the corresponding operation impact value. The operation interval of the collection moment is matched with multiple operation interval intervals, and the operation impact value corresponding to the successfully matched operation interval interval is output, which is recorded as the operation shadow value CZ; After normalizing the temperature shadow value WZ, wet shadow value SZ, stirring shadow value JZ and manipulation shadow value CZ, they are put into the formula: CPZ=WZ×a1+SZ×a2+JZ×a3+CZ×a4 to obtain the evaluation value CPZ, where a1, a2, a3, and a4 are preset weight coefficients. A curve chart of the evaluation value changing with time is established, as shown in Figure 2, substitute the sampling and evaluation values ​​of each sampling moment into the curve graph, and connect them in sequence through the curve in chronological order to obtain the sampling and evaluation value change curve, preset several sampling frequency update moments, draw a preset sampling and evaluation high threshold line and a preset sampling and evaluation low threshold line in the curve graph, and record the part of the sampling and evaluation value change curve that exceeds the preset sampling and evaluation high threshold line and the area enclosed by the preset sampling and evaluation high threshold line as the rising area. If the sampling and evaluation value corresponding to the update moment is higher than the preset sampling and evaluation high threshold line, then draw a vertical line from the sampling and evaluation value point corresponding to the update moment to the preset sampling and evaluation high threshold line. At this time, the rising area is the area enclosed by the vertical line, the part of the sampling and evaluation value change curve that exceeds the preset sampling and evaluation high threshold line, and the preset sampling and evaluation high threshold line, wherein the sampling moment includes the update moment; The area enclosed by the part of the sampling value change curve that is lower than the preset sampling value lower threshold line and the preset sampling value lower threshold line is recorded as the downward area. If the sampling value corresponding to the update time is lower than the preset sampling value lower threshold line, a vertical line is drawn from the sampling value point corresponding to the update time to the preset sampling value lower threshold line. At this time, the downward area is the area enclosed by the vertical line, the part of the sampling value change curve that is lower than the preset sampling value lower threshold line, and the preset sampling value lower threshold line. When the update time is reached, all the deviated rising areas from the last update time to the current update time are summed to obtain the total rise product ZS, and all the deviated falling areas are summed to obtain the total fall product ZJ. For the first update interval, the starting time for calculating the total rise product and the total fall product is the first collection time. The formula: CJ=ZS×b1-ZJ×b2 is used to obtain the collection and evaluation product CJ, where b1 and b2 are preset weight coefficients; Three sampling and evaluation intervals are preset, namely: low sampling and evaluation interval, medium sampling and evaluation interval and high sampling and evaluation interval; each sampling and evaluation interval corresponds to a sampling frequency level, that is: low sampling and evaluation interval corresponds to low frequency level, medium sampling and evaluation interval corresponds to medium frequency level and high sampling and evaluation interval corresponds to high frequency level; the sampling and evaluation product at the current update moment is matched with the three sampling and evaluation intervals, and the corresponding sampling frequency level is output, and this sampling frequency level is used as the collection frequency level of the pen-type pH electrode for the pH in the processed raw materials from the current collection update moment to the next update moment, and the raw material pH value collected at each collection moment and the corresponding collection moment are sent to the data transmission module.

[0021] When the transmission detection module receives the raw material pH value collected at each collection time and the corresponding collection time, it will encapsulate the raw material pH value received at different collection times of the same batch into a pH data packet, and encrypt the pH data packet. After encryption, it is sent to the detection platform via wireless communication. The specific process is as follows: The pH values ​​of the raw materials obtained at different collection times of the same batch are orderly integrated according to the time sequence and encapsulated into pH data packets. For each group of pH data packets, the number of bytes of the data packet is calculated, and the sending time and sending signal strength of the data packet are recorded; Mark the midnight of each day as the time reference point, calculate the interval between the sending time and the time reference point for each group of pH data packets, quantify the interval in seconds to get the time difference value, preset the time difference value, number of bytes, and signal strength model conversion coefficient respectively, multiply the time difference value, number of bytes of pH data packets, and sending signal strength by the corresponding conversion coefficients respectively to get the time modulus value, character modulus value, and strong modulus value; establish a frustum encryption model, substitute the time modulus value into the frustum encryption model as the radius of the bottom circle of the frustum, the character modulus value as the height of the frustum, and the strong modulus value as the radius of the bottom circle of the frustum to draw the frustum, and get the frustum figure, use the frustum figure as the encrypted frustum figure, and use the time difference value, number of bytes of pH data packets, and sending signal strength corresponding to the pH data packet as the key to encrypt the pH data packet, and after the encryption is completed, send the pH data packet in ciphertext form and the accompanying frustum figure information to the detection platform together.

[0022] The monitoring platform includes a decryption unit, a transmission detection unit, and an analysis unit. For each group of received pH data packets, the decryption unit obtains the encrypted frustum figure corresponding to the pH data packet, calculates the lower base circle radius, height and upper base circle radius of the encrypted frustum figure, obtains the time modulus value, the character modulus value and the strong modulus value, and obtains the time difference value, the number of bytes of the pH data packet and the transmission signal strength by dividing the time modulus value, the character modulus value and the strong modulus value by the corresponding conversion coefficient, and matches and verifies the received calculated time difference value, the number of bytes of the pH data packet and the transmission signal strength with the time difference value, the number of bytes of the pH data packet and the transmission signal strength corresponding to the key of the pH data packet. After successful verification, extract the raw material pH value at each collection time in the pH data packet; Transmission detection unit: add the time reference point to the time difference value corresponding to the pH data packet calculated by the decryption unit to obtain the sending time of the pH data packet, obtain the receiving time of the pH data packet, and subtract the receiving time of the pH data packet from the sending time of the corresponding pH data packet to obtain the sending duration FC; Recalculate the number of bytes of the decrypted pH data packet, record it as the number of received bytes, subtract the number of bytes of the pH data packet calculated by the decryption unit from the number of received bytes, obtain a byte deviation value ZP, preset a byte deviation threshold, compare the byte deviation value with the corresponding threshold, if the byte deviation value is greater than or equal to the preset byte deviation threshold, generate a pH data packet resending instruction corresponding to this sending time and send it to the transmission encryption module, when the transmission encryption module receives the pH data packet resending instruction corresponding to a certain sending time, resend the data packet corresponding to the sending time to the monitoring platform; Obtain the signal strength value when the pH data packet is received, and subtract the signal strength of the pH data packet sent calculated by the decryption unit from the signal strength value when the pH data packet is received to obtain a signal difference value XC; After normalizing the transmission time FC, the byte deviation value ZP and the signal difference value XC, they are put into the preset formula: CPZ=FC×c1+ZP×c2+XC×c3 to obtain the transmission evaluation value CPZ, where c1, c2, and c3 are preset weight coefficients. It should be noted that the larger the transmission evaluation value, the longer the pH data packet transmission time, the more serious the data loss, and the worse the signal transmission quality; A transmission evaluation threshold is preset, and the transmission evaluation value is compared with the preset transmission evaluation threshold. If the transmission evaluation value is greater than or equal to the preset transmission evaluation threshold, a transmission channel change instruction is generated and sent to the personnel terminal module; Analysis unit: Create a line graph of the pH of the raw material over time, such as Figure 3 , obtain the raw material pH value corresponding to each collection time in the pH data packet, and substitute it into the line graph, and at the same time, connect the raw material pH value points corresponding to adjacent collection times in chronological order through line segments to obtain the raw material pH change line; Two threshold lines are preset, namely, the raw material pH upper threshold line and the raw material pH lower threshold line. The area enclosed by the raw material pH change line below the raw material pH lower threshold line and the area enclosed by it, or the area enclosed by the raw material pH change line above the raw material pH upper threshold line and the raw material pH upper threshold line is uniformly recorded as the abnormal area. All abnormal areas are summed up to obtain the abnormal total product PJ; if the starting point or the end point of the raw material pH change line is not between the pH upper threshold line and the raw material pH lower threshold line, a vertical line can be drawn between the pH upper threshold line or the raw material pH lower threshold line to calculate the abnormal area; the larger the abnormal total product, the more likely it is that there is a large fluctuation in impurity content or microbial contamination; The raw material pH value points corresponding to the portion between the raw material pH upper threshold line and the raw material pH lower threshold line in the raw material pH change broken line are recorded as normal points, and all the raw material pH value points of the raw material pH change broken line are obtained. The positive percentage value PZ is obtained by dividing the normal point by all the raw material pH value points of the raw material pH change broken line. The larger the positive percentage value is, the closer the raw material pH value reflected by this group of pH data packets is to a stable and normal state during the entire collection period, indicating that the better the raw material pH is controlled in the production process, the lower the risk of product quality problems; The pH value corresponding to each acquisition time in the pH data packet is calculated using the standard deviation formula, and the pH standard deviation value of this group of pH data packets is obtained, which is recorded as the pH fluctuation value PB; the larger the pH fluctuation value, the more unstable the change of the raw material pH value reflected, and there may be factors affecting product quality; After normalizing the abnormal total product PJ, the positive ratio value PZ and the pH fluctuation value PB, enter them into the formula: , obtain the abnormal evaluation value YPZ, where d1, d2, and d3 are preset weight coefficients, and each group of pH data packets is preset to have a corresponding abnormal evaluation threshold. The abnormal evaluation value of the pH data packet is compared with the corresponding abnormal evaluation threshold. If the abnormal evaluation value of the pH data packet is greater than the corresponding abnormal evaluation threshold, the pH data packet is sent to the personnel terminal module and a personnel intervention deployment instruction is synchronously generated and sent to the personnel terminal module; The personnel terminal module is used to respond to the transmission channel replacement command and personnel intervention and deployment command. The specific process is as follows: When receiving the instruction to change the transmission channel, the staff selects a wireless transmission channel with better network speed and larger bandwidth than the original wireless transmission channel to transmit the data of the detection unit; When a personnel intervention adjustment instruction is received, a staff member will be dispatched to the raw material processing equipment site to adjust and correct the raw material pH, and the pH data packet corresponding to the personnel intervention adjustment instruction will be sent to the staff member's mobile phone, so that the staff can view the original data about the raw material pH value in the data packet intuitively and in detail.

[0023] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A remote monitoring system for a wireless synchronous pen-type pH electrode, comprising: pH electrode acquisition module, transmission detection module, monitoring platform and personnel terminal module, characterized by: pH electrode acquisition module: the acquisition frequency of the pen-type pH electrode is divided into grades, and the acquisition and evaluation value is obtained by comprehensive analysis of the raw material temperature, humidity, stirring rate and ingredient addition time. The acquisition and evaluation product is obtained according to the change trend of the acquisition and evaluation value over time. The corresponding acquisition frequency grade is matched according to the acquisition and evaluation product to adjust the acquisition frequency of the pen-type pH electrode for the raw material pH value, and the collected raw material pH value is sent to the data transmission module; Transmission detection module: encapsulates the pH values ​​of raw materials received from the same batch at different collection times into pH data packets, encrypts the pH data packets, and sends them to the detection platform via wireless communication after encryption; The monitoring platform includes: a decryption unit, a transmission detection unit and an analysis unit; Decryption unit: decrypts and verifies the received pH data packet, extracts the number of bytes in the pH data packet, the strength of the transmitted signal, the time difference value, and the pH value of the raw material at each collection moment; Transmission detection unit: Analyze the number of bytes of pH data packets, the strength of the transmitted signal and the time difference value to obtain a transmission evaluation value. If the transmission evaluation value is greater than or equal to the preset transmission evaluation threshold, a transmission channel change instruction is generated and sent to the personnel terminal module; Analysis unit: Analyze the change trend of the pH value of the raw material over time to obtain the abnormal evaluation value. If the abnormal evaluation value is greater than the corresponding threshold, the pH data packet is sent to the personnel terminal module and a personnel intervention and deployment instruction is simultaneously generated and sent to the personnel terminal module; Personnel terminal module: used to respond to instructions for changing transmission channels and personnel intervention and deployment instructions.

2. A wireless synchronous pen-type pH electrode remote monitoring system according to claim 1, characterized in that: The specific process of classifying the sampling frequency of the pen-type pH electrode and comprehensively analyzing the raw material temperature, humidity, stirring rate and ingredient addition time to obtain the sampling value is as follows: The pH acquisition frequency of the pen-type pH electrode for the processed raw materials is divided into three acquisition frequency levels, including: low frequency level, medium frequency level and high frequency level. The initial acquisition frequency of the pen-type pH electrode is set to the medium frequency level. For each acquisition moment, the temperature value and humidity value of the raw material at the acquisition moment are obtained, and several temperature intervals and humidity intervals are set. Each temperature interval corresponds to a preset raw material temperature influence coefficient, and each humidity interval corresponds to a preset humidity influence coefficient. The temperature value and humidity value of the raw material at the acquisition moment are matched with the corresponding temperature interval and humidity interval, and the corresponding influence coefficient is output, and multiplied by the corresponding influence coefficient to obtain the temperature shadow value WZ and the wet shadow value SZ corresponding to the acquisition moment; For each collection moment, the stirring rate of the raw material at the collection moment is obtained, the standard stirring rate of the raw material is preset, and the stirring rate of the raw material at the collection moment is subtracted from the standard speed of the corresponding raw material to obtain the stirring deviation rate; multiple stirring deviation rate intervals are preset, and each stirring deviation rate interval corresponds to a stirring deviation influence value, and the stirring deviation rate at the collection moment is matched with multiple stirring deviation rate intervals, and the stirring deviation influence value corresponding to the successfully matched stirring deviation rate interval is output, which is recorded as the stirring shadow value JZ; The moment of adding ingredients to the raw material preparation is recorded as the operation moment. For each collection moment, the time interval from the operation moment is obtained, which is recorded as the operation interval. Multiple operation interval intervals are preset, and each operation interval interval corresponds to an operation impact value. The operation interval of the collection moment is matched with multiple operation interval intervals, and the operation impact value corresponding to the successfully matched operation interval interval is output, which is recorded as the operation shadow value CZ; After normalizing the temperature shadow value WZ, wet shadow value SZ, stirring shadow value JZ and manipulation shadow value CZ, they are entered into the formula: CPZ=WZ×a1+SZ×a2+JZ×a3+CZ×a4 to obtain the evaluation value CPZ, where a1, a2, a3 and a4 are preset weight coefficients.

3. A wireless synchronous pen-type pH electrode remote monitoring system according to claim 2, characterized in that: The specific process of obtaining the evaluation product according to the trend analysis of the evaluation value over time is as follows: Establish a curve graph of the change of the sampling and evaluation value over time, substitute the sampling and evaluation value at each sampling moment into the curve graph, and connect them in sequence through the curve in chronological order to obtain the sampling and evaluation value change curve, preset several sampling frequency update moments, draw a preset sampling and evaluation high threshold line and a preset sampling and evaluation low threshold line in the curve graph, and record the part of the sampling and evaluation value change curve that exceeds the preset sampling and evaluation high threshold line and the area enclosed by the preset sampling and evaluation high threshold line as the rising area. If the sampling and evaluation value corresponding to the update moment is higher than the preset sampling and evaluation high threshold line, draw a vertical line from the sampling and evaluation value point corresponding to the update moment to the preset sampling and evaluation high threshold line. At this time, the rising area is the area enclosed by the vertical line, the part of the sampling and evaluation value change curve that exceeds the preset sampling and evaluation high threshold line, and the preset sampling and evaluation high threshold line. The area enclosed by the part of the sampling value change curve that is lower than the preset sampling value lower threshold line and the preset sampling value lower threshold line is recorded as the downward area. If the sampling value corresponding to the update time is lower than the preset sampling value lower threshold line, a vertical line is drawn from the sampling value point corresponding to the update time to the preset sampling value lower threshold line. At this time, the downward area is the area enclosed by the vertical line, the part of the sampling value change curve that is lower than the preset sampling value lower threshold line, and the preset sampling value lower threshold line. When the update time is reached, all the rising areas from the last update time to the current update time are summed up to get the total inspection product ZS, and all the falling areas are summed up to get the total inspection product ZJ. The formula: CJ=ZS×b1-ZJ×b2 is used to get the collection and evaluation product CJ, where b1 and b2 are preset weight coefficients.

4. A wireless synchronous pen-type pH electrode remote monitoring system according to claim 3, characterized in that: The specific process of matching the sampling frequency level according to the sampling and evaluation area and sending the collected raw material pH value to the data transmission module is as follows: Three sampling and evaluation intervals are preset, namely: low sampling and evaluation interval, medium sampling and evaluation interval and high sampling and evaluation interval; each sampling and evaluation interval corresponds to a sampling frequency level, the sampling and evaluation product at the current update moment is matched with the three sampling and evaluation intervals, the corresponding sampling frequency level is output, and this sampling frequency level is used as the collection frequency level of the pen-type pH electrode for the pH in the processed raw materials from the current collection update moment to the next update moment, and the raw material pH value collected at each collection moment and the corresponding collection moment are sent to the data transmission module.

5. A wireless synchronous pen-type pH electrode remote monitoring system according to claim 1, characterized in that: The transmission detection module encapsulates the pH values ​​of the raw materials received from the same batch at different collection times into pH data packets, and the process of encrypting the pH data packets is as follows: The pH values ​​of the raw materials obtained at different collection times of the same batch are orderly integrated according to the time sequence and encapsulated into pH data packets. For each group of pH data packets, the number of bytes of the data packet is calculated, and the sending time and sending signal strength of the data packet are recorded; Mark the midnight of each day as the time reference point, calculate the interval between the sending time and the time reference point for each group of pH data packets, quantify the interval in seconds to get the time difference value, preset the time difference value, number of bytes, and signal strength model conversion coefficient respectively, multiply the time difference value, number of bytes of pH data packets, and sending signal strength by the corresponding conversion coefficients respectively to get the time modulus value, character modulus value, and strong modulus value; establish a frustum encryption model, substitute the time modulus value into the frustum encryption model as the radius of the bottom circle of the frustum, the character modulus value as the height of the frustum, and the strong modulus value as the radius of the bottom circle of the frustum to draw the frustum, and get the frustum figure, use the frustum figure as the encrypted frustum figure, and use the time difference value, number of bytes of pH data packets, and sending signal strength corresponding to the pH data packet as the key to encrypt the pH data packet, and after the encryption is completed, send the pH data packet in ciphertext form and the accompanying frustum figure information to the detection platform together.

6. A wireless synchronous pen-type pH electrode remote monitoring system according to claim 5, characterized in that: The decryption unit works as follows: For each group of pH data packets received, the decryption unit obtains the encrypted frustum figure corresponding to the pH data packet, calculates the lower base circle radius, height and upper base circle radius of the encrypted frustum figure, and obtains the time modulus value, character modulus value and strong modulus value. The time difference value, the number of bytes of the pH data packet and the transmission signal strength are obtained by dividing the time modulus value, character modulus value and strong modulus value by the corresponding conversion coefficient. The received calculated time difference value, the number of bytes of the pH data packet and the transmission signal strength are matched and verified with the time difference value, the number of bytes of the pH data packet and the transmission signal strength corresponding to the key of the pH data packet. After successful verification, the raw material pH value at each collection time in the pH data packet is extracted.

7. A wireless synchronous pen-type pH electrode remote monitoring system according to claim 6, characterized in that: The transmission detection unit works as follows: Add the time difference value corresponding to the pH data packet calculated by the decryption unit to the time reference point to obtain the pH data packet sending time, obtain the pH data packet receiving time, and subtract the pH data packet receiving time from the corresponding pH data packet sending time to obtain the sending duration FC; Recalculate the number of bytes of the decrypted pH data packet, record it as the number of received bytes, subtract the number of bytes of the pH data packet calculated by the decryption unit from the number of received bytes, obtain a byte deviation value ZP, preset a byte deviation threshold, compare the byte deviation value with the corresponding threshold, if the byte deviation value is greater than or equal to the preset byte deviation threshold, generate a pH data packet resending instruction corresponding to this sending time and send it to the transmission encryption module, when the transmission encryption module receives the pH data packet resending instruction corresponding to a certain sending time, resend the data packet corresponding to the sending time to the monitoring platform; Obtain the signal strength value when the pH data packet is received, and subtract the signal strength of the pH data packet sent calculated by the decryption unit from the signal strength value when the pH data packet is received to obtain a signal difference value XC; After normalizing the transmission time FC, the byte deviation value ZP and the signal difference value XC, they are put into the preset formula: CPZ=FC×c1+ZP×c2+XC×c3 to obtain the transmission evaluation value CPZ, where c1, c2, and c3 are preset weight coefficients; A transmission evaluation threshold is preset, and the transmission evaluation value is compared with the preset transmission evaluation threshold. If the transmission evaluation value is greater than or equal to the preset transmission evaluation threshold, a transmission channel change instruction is generated and sent to the personnel terminal module.

8. A wireless synchronous pen-type pH electrode remote monitoring system according to claim 7, characterized in that: The analysis unit works as follows: Establish a line graph of the change of raw material pH over time, obtain the raw material pH value corresponding to each collection time in the pH data packet, and substitute it into the line graph, and at the same time, connect the raw material pH value points corresponding to adjacent collection times in chronological order through line segments to obtain the raw material pH change line; Two threshold lines are preset, namely, the raw material pH upper threshold line and the raw material pH lower threshold line. The area where the raw material pH change line is lower than the raw material pH lower threshold line and the area enclosed by it, or the area where the raw material pH change line is higher than the raw material pH upper threshold line and the area enclosed by the raw material pH upper threshold line is uniformly recorded as the abnormal area. All abnormal areas are summed to obtain the abnormal total product PJ; The raw material pH value point corresponding to the portion between the raw material pH upper threshold line and the raw material pH lower threshold line in the raw material pH change broken line is recorded as a normal point, and all the raw material pH value points of the raw material pH change broken line are obtained, and the positive percentage value PZ is obtained by dividing the normal point by all the raw material pH value points of the raw material pH change broken line; The pH value corresponding to each acquisition time in the pH data packet is calculated using the standard deviation formula, and the pH standard deviation value of this group of pH data packets is obtained, which is recorded as the pH fluctuation value PB; After normalizing the abnormal total product PJ, the positive ratio value PZ and the pH fluctuation value PB, enter them into the formula: , obtain the abnormal evaluation value YPZ, where d1, d2, and d3 are preset weight coefficients. Each group of pH data packets is preset to have a corresponding abnormal evaluation threshold. The abnormal evaluation value of the pH data packet is compared with the corresponding abnormal evaluation threshold. If the abnormal evaluation value of the pH data packet is greater than the corresponding abnormal evaluation threshold, the pH data packet is sent to the personnel terminal module and a personnel intervention deployment instruction is synchronously generated and sent to the personnel terminal module.

9. A wireless synchronous pen-type pH electrode remote monitoring system according to claim 1, characterized in that: The personnel terminal module works as follows: When receiving the instruction to change the transmission channel, the staff selects a wireless transmission channel with better network speed and larger bandwidth than the original wireless transmission channel to transmit the data of the detection unit; When a personnel intervention adjustment instruction is received, a staff member is dispatched to the raw material processing equipment site to adjust and correct the pH of the raw material, and a pH data packet corresponding to the personnel intervention adjustment instruction is sent to the staff member's mobile phone.

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