Carbon paper resistivity online automatic detection equipment and method

Abstract

The invention discloses carbon paper resistivity on-line automatic detection equipment and method. The carbon paper resistivity on-line automatic detection equipment comprises a pressure head module, a detection data acquisition unit, a driving unit and a calculation control unit, the driving unit is used for driving a lifting pressure head of the pressure head module to lift; the detection data acquisition unit is used for acquiring thickness and area data of the carbon paper and calculating carbon paper voltage and current data required by the resistance of the carbon paper; and the calculation control unit is used for receiving the detection data acquired by the detection data acquisition unit in real time and calculating the resistivity of the carbon paper according to the detection data. According to the invention, the efficiency and precision of carbon paper resistivity detection are improved, the full automation of the detection process is realized, the problems of low efficiency, large error and insufficient automation degree in the traditional method are solved, and an efficient and reliable detection solution is provided for industrial production.

Description

Background Art

[0002] Hydrogen energy is one of the cleanest energy sources in the world. Fuel cells are hydrogen energy conversion devices. They are efficient and environmentally friendly power generation devices that directly and continuously convert chemical energy into electrical energy. There are many types of fuel cells. Among them, proton exchange membrane fuel cells have the advantages of long life, high specific power, and fast room temperature startup speed. They can be used as mobile power sources and fixed power sources. They have very broad application prospects in military, communication, transportation and other fields. They are considered to be one of the new energy sources that meet future energy and environmental requirements. Carbon paper is one of the core components of the membrane electrode MEA of proton exchange membrane fuel cells. It undertakes the functions of uniformly distributing reaction gases, conducting current, and draining water. In order to meet these functional requirements of carbon paper, it should have the characteristics of high conductivity, high porosity, high hydrophobicity, low roughness and good mechanical properties. The conductivity of carbon paper is one of the most important indicators of carbon paper. Therefore, it is very important to use a resistance testing device to quickly and efficiently characterize the resistivity parameters of carbon paper. Moreover, for different MEA designs, even if the carbon paper is prepared by the same preparation method, its resistivity cannot be exactly the same due to factors such as the thickness, porosity, and proportion of various materials added. If the porosity, thickness and other factors of the carbon paper remain consistent, the curve of the contact resistance between the gas diffusion layers changing with the assembly pressure is very important for MEA design and has a huge impact on the battery performance and life of the fuel cell.

[0003] Carbon paper is widely used in fuel cells, electrochemical sensors and other fields due to its excellent electrical conductivity, corrosion resistance and mechanical properties. Its resistivity, as the core parameter to characterize the electrical conductivity of carbon paper, directly affects the performance of carbon paper in different applications. Therefore, accurate and efficient detection of the resistivity of carbon paper is a key technology to ensure its quality.

[0004] Most of the existing carbon paper resistance testing equipment mainly relies on manual operation, usually using the four-probe method, the two-probe method or the traditional test method combining a voltmeter and an ammeter. These methods have the following limitations: 1. Since the electrodes need to be manually connected, the test equipment needs to be adjusted and the data needs to be recorded, the detection process takes a long time and it is difficult to meet the needs of large-scale production. 2. Most current technologies have not yet automated the test process. Manual testing is not only labor-intensive, but may also lead to inconsistent test results due to differences in the skill level of the operators. 3. In the test using a voltmeter, the internal resistance of the equipment itself may introduce additional errors, especially when measuring low-resistance carbon paper. This error is particularly obvious, thereby affecting the reliability of the test. 4. Due to the efficiency and consistency issues of manual testing, existing technologies are difficult to meet the needs of large-scale carbon paper quality testing in industrial production. Summary of the invention

[0005] In view of the problems existing in the prior art, the object of the present invention is to provide an online automatic detection device and method for carbon paper resistivity with high automation and both detection efficiency and reliability.

[0006] To achieve the above-mentioned object, the first aspect of the present invention provides an online automatic detection device for resistivity of carbon paper, comprising a pressure head module, a detection data acquisition unit, a driving unit and a calculation control unit;

[0007] The driving unit is used to drive the lifting and lowering of the pressure head of the pressure head module;

[0008] The detection data acquisition unit is used to collect the thickness and area data of the carbon paper and the carbon paper voltage and current data required for calculating the carbon paper resistance;

[0009] The calculation control unit is used to receive the detection data collected by the detection data collection unit in real time and calculate the resistivity of the carbon paper according to the detection data.

[0010] Furthermore, the detection data acquisition unit includes a current detection sensor, a voltage detection sensor, a thickness detection sensor, and an area detection sensor. The thickness detection sensor and the area detection sensor are arranged on the lifting pressure head of the pressure head module to control the relative position between the lifting pressure head and the carbon paper, so as to detect the thickness L of the carbon paper through the thickness detection sensor and detect the area S of the carbon paper through the area detection sensor; the voltage detection sensor is connected in parallel with the carbon paper arranged between the upper and lower electrodes of the pressure head module to detect the carbon paper voltage U set between the upper and lower electrodes, and the current detection sensor is connected in series with the carbon paper arranged between the upper and lower electrodes of the pressure head module to detect the carbon paper current I set between the upper and lower electrodes.

[0011] Furthermore, it also includes a pressure detection sensor, which is arranged on the lifting pressure head. The calculation control unit determines whether the pressure head module is in contact and connected with the carbon paper based on the comparison result of the pressure value detected in real time by the pressure detection sensor and the predetermined pressure threshold.

[0012] Furthermore, it also includes a fixed resistor R, which is connected to the upper and lower electrodes of the pressure head module to eliminate the error influence of the internal resistance of the voltage detection sensor on the calculation result of the carbon paper resistance.

[0013] Further, the calculation control unit calculates the carbon paper resistance Rx according to the carbon paper voltage U and the carbon paper current I according to the following predetermined formula:

[0014] R X =U / (IU / RU / r),

[0015] Among them, Rx represents the carbon paper resistance, U represents the carbon paper voltage, I represents the carbon paper current, r represents the internal resistance of the voltage detection sensor, and R represents the fixed resistance.

[0016] Further, the calculation control unit calculates the resistivity ρ of the carbon paper according to the thickness L, area S and resistance Rx of the carbon paper according to the following predetermined formula:

[0017] ρ=Rx×L / S.

[0018] Furthermore, it also includes a display and operation unit, which is used to receive and display the detection data of the detection data acquisition unit and the carbon paper resistivity calculated by the calculation control unit, and input control operation instructions to the calculation control unit through the HMI interface provided by the display and operation unit.

[0019] A second aspect of the present invention provides a method for online automatic detection of carbon paper resistivity, comprising the following steps:

[0020] Step 1) After the lifting head is controlled to rise to a certain position, the thickness L of the carbon paper is collected by a thickness detection sensor, and the area S of the carbon paper is collected by an area detection sensor;

[0021] Step 2) Control the lifting pressure head to descend until it contacts and connects with the carbon paper, collect the voltage U of the carbon paper through the voltage detection sensor, and collect the current I of the carbon paper through the current detection sensor;

[0022] Step 3) Calculate the resistivity ρ of the carbon paper according to the thickness L, area S, carbon paper voltage U and carbon paper current I of the carbon paper.

[0023] Furthermore, between step 1) and step 2), the following steps are also included:

[0024] The voltage U when the lifting pressure head is not in contact with the carbon paper is collected by the voltage detection sensor 1 The current I when the lifting pressure head is not in contact with the carbon paper is collected by the current detection sensor 1 , according to the voltage U 1 、Current I 1 And the fixed resistance R calculates the internal resistance r of the voltage detection sensor.

[0025] A third aspect of the present invention provides an electronic device, comprising:

[0026] Processor; and

[0027] A memory having computer-readable instructions stored thereon, wherein the computer-readable instructions implement the above method when executed by the processor.

[0028] A fourth aspect of the present invention provides a computer-readable storage medium having a computer program stored thereon, wherein the computer program implements the above method when executed by a processor.

[0029] The present invention realizes the rapid positioning and measurement of carbon paper through the coordinated work of the automated pressure head module and the drive unit, eliminating the steps of manual adjustment and operation, greatly improving the detection efficiency, and being able to meet the needs of mass production. The detection data acquisition unit can realize the automated collection of carbon paper thickness, area, voltage and current data, avoiding data deviations caused by manual operation. At the same time, the calculation control unit calculates the resistivity in real time based on high-precision data, further reducing the deviation caused by the internal resistance of the equipment or the error of manually recorded data, and ensuring the accuracy and consistency of the test results. Through the real-time data processing capability of the calculation control unit, the equipment can immediately calculate the resistivity of the carbon paper while collecting data, and output the results, avoiding the time delay between manual recording and later analysis in traditional detection, and providing the possibility for rapid quality feedback in the production process. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the following briefly introduces the drawings required for use in the description of the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0031] Figure 1 It is a structural block diagram of an online automatic detection device for carbon paper resistivity according to an embodiment of the present invention;

[0032] Figure 2 for Figure 1 Schematic diagram of the detection principle of the online automatic detection equipment for resistivity of medium carbon paper;

[0033] Figure 3 It is a schematic diagram of the principle of a method for online automatic detection of carbon paper resistivity according to an embodiment of the present invention;

[0034] Figure 4 The figure is a flow chart of a method for online automatic detection of carbon paper resistivity according to an embodiment of the present invention. DETAILED DESCRIPTION

[0035] In order to make the objectives, technical solutions and advantages of the present invention more clear, the embodiments of the present invention will be further described in detail below with reference to the accompanying drawings.

[0036] like Figure 1 and 2 As shown, the carbon paper resistivity online automatic detection device of the present invention comprises a pressure head module, a detection data acquisition unit, a driving unit and a calculation control unit;

[0037] The driving unit is used to drive the lifting and lowering of the pressure head of the pressure head module;

[0038] The detection data acquisition unit is used to collect the thickness and area data of the carbon paper and the carbon paper voltage and current data required for calculating the carbon paper resistance;

[0039] The calculation control unit is used to receive the detection data collected by the detection data collection unit in real time and calculate the resistivity of the carbon paper according to the detection data.

[0040] In one embodiment of the present invention, the pressure head module includes a lifting pressure head 1, an insulating gasket 2, upper and lower conductive electrodes 3 and a lower fixed pressure head base 5. The lifting pressure head 1 is connected to the upper conductive electrode 3, and the lower fixed pressure head base 5 is connected to the lower conductive electrode 3. The insulating gasket 2 is arranged between the lifting pressure head 1 and the upper conductive electrode 3 and between the lower fixed pressure head base 5 and the lower conductive electrode 3. The lifting pressure head 1 can be driven by a driving unit to move up and down in a vertical direction to drive the upper conductive electrode 3 to move up and down, so as to fix and position the carbon paper between the upper and lower electrodes 3. The driving unit can be a motor, and the lifting pressure head 1 of the pressure head module is driven by the motor to move up and down under the control of the computing control unit.

[0041] In one embodiment of the present invention, the detection data acquisition unit includes a current detection sensor, a voltage detection sensor, a thickness detection sensor, and an area detection sensor. The thickness detection sensor and the area detection sensor are arranged on the lifting head 1 of the pressure head module to control the relative position between the lifting head 1 and the carbon paper 4, so as to detect the thickness L of the carbon paper through the thickness detection sensor and the area S of the carbon paper through the area detection sensor; the voltage detection sensor is connected in parallel with the carbon paper arranged between the upper and lower electrodes of the pressure head module to detect the voltage U of the carbon paper arranged between the upper and lower electrodes, and the current detection sensor is connected in series with the carbon paper arranged between the upper and lower electrodes of the pressure head module to detect the current I of the carbon paper arranged between the upper and lower electrodes. After the lifting head 1 moves up to a certain distance, the thickness L of the carbon paper and the area S of the carbon paper can be collected by the thickness detection sensor and the area detection sensor arranged on the lifting head 1. After the lifting head 1 descends to make the upper and lower electrodes 3 fixedly contact and connect with the carbon paper 4, the voltage U of the carbon paper can be collected by the voltage detection sensor, and the current I of the carbon paper can be collected by the current detection sensor. The above-mentioned current detection sensor, voltage detection sensor, thickness detection sensor and area detection sensor can send the collected detection data to the calculation control unit, and the calculation control unit calculates the resistivity of the carbon paper according to the detection data. In this embodiment, the thickness detection sensor and the area detection sensor are integrated on the lifting pressure head, which can detect the thickness L and area S of the carbon paper in real time, and provide basic physical parameters for the accurate calculation of the resistivity. The voltage detection sensor and the current detection sensor are arranged in parallel and series respectively, and are directly associated with the carbon paper, so as to realize the real-time and accurate collection of the voltage U and current I of the carbon paper. This multi-parameter synchronous collection method avoids the time difference and error of data recording and processing between different devices in traditional detection, and improves the efficiency and consistency of the test. In addition, the automatic collection and processing of the detection parameters is realized, and the tedious process of manual recording and analysis is avoided, which can meet the needs of rapid and large-scale detection in industrial production, and significantly reduce the labor cost. The integrated design makes the equipment compact, easy to install and maintain, and further enhances the operability of industrial applications.

[0042] In one embodiment of the present invention, the above-mentioned device also includes a pressure detection sensor, which is arranged on the lifting pressure head 1, and the calculation control unit determines whether the pressure head module is in contact with the carbon paper according to the comparison result of the pressure value detected in real time by the pressure detection sensor and the predetermined pressure threshold. Through the pressure detection sensor, the device can accurately identify the contact state between the pressure head module and the carbon paper to avoid measurement errors caused by poor contact. By real-time feedback of the contact pressure, it is ensured that the pressure applied during the detection process is stable and meets the predetermined value, thereby avoiding the influence of improper pressure (too large or too small) on the carbon paper resistivity measurement result. The device automatically determines whether the pressure head is in contact with the carbon paper without manual intervention, further improving the intelligence level of the detection process and reducing the risk of human error. When the pressure reaches the predetermined threshold, the device can trigger the next step of data collection and processing operations, significantly improving the automation and efficiency of the detection process. The pressure detection sensor can dynamically monitor the force applied by the pressure head to avoid deformation or damage of the carbon paper due to excessive pressure, and ensure the integrity of the sample, especially when detecting thin or high-precision carbon paper. When the pressure does not reach the predetermined threshold, the system will suspend the detection operation to prevent measurement deviations caused by poor contact or insufficient pressure. The pressure detection sensor is adaptable to carbon paper samples of different thicknesses and materials, and reliable detection can be achieved without complex adjustments to the equipment, which enhances the applicability of the equipment. By monitoring the pressure in real time, the system can promptly detect anomalies (such as equipment failure or sample offset) and issue alarms or adjustments to improve the stability and reliability of the detection system. Adding a pressure detection sensor not only improves the accuracy and reliability of equipment detection through real-time monitoring of the contact status of the pressure head, but also optimizes the detection process and intelligence level, effectively reduces sample damage and operational errors, and further meets the needs of efficient and accurate detection in industrial production.

[0043] In one embodiment of the present invention, a fixed resistor R is further included, and the fixed resistor is connected to the upper and lower electrodes of the pressure head module to eliminate the error influence of the internal resistance of the voltage detection sensor on the calculation result of the carbon paper resistance. In this embodiment, the internal resistance of the voltage detection sensor can be calculated according to the known resistance value of the fixed resistor R by adding a current branch of the fixed resistor, and the influence of the internal resistance of the voltage detection sensor on the calculation result is considered when calculating the carbon paper resistance, which effectively eliminates the error influence of the internal resistance of the voltage detection sensor on the calculation of the carbon paper resistivity, and significantly improves the detection accuracy and stability.

[0044] In one embodiment of the present invention, the upper part of the pressure head module is also provided with a limit switch. After the lifting pressure head rises to the limit switch setting position, it will touch the limit switch. The limit switch will send the touch information to the calculation control unit, and the calculation control unit will control the lifting pressure head to stop rising. At this position, data collection of the thickness L of the carbon paper and the area S of the carbon paper can be carried out.

[0045] In one embodiment of the present invention, the calculation control unit calculates the carbon paper resistance Rx according to the carbon paper voltage U and the carbon paper current I according to the following predetermined formula:

[0046] R X =U / (IU / RU / r),

[0047] Among them, Rx represents the carbon paper resistance, U represents the carbon paper voltage, I represents the carbon paper current, r represents the internal resistance of the voltage detection sensor, and R represents the fixed resistance.

[0048] like Figure 2 As shown in the figure, when the conductive electrode surface of the carbon paper is not in contact, it is equivalent to the line of the carbon paper resistor RX being open circuit. At this time, the current flowing through the fixed resistor R is: I 1 =U / R, current flowing through the voltmeter: I 2 =II 1 , the internal resistance of the voltage sensor can be calculated: r = U / I 2 U and I are the values ​​detected by the voltage and current sensors at this moment.

[0049] When the conductive electrode surface of the carbon paper is in contact, the current I flowing through the carbon paper resistor Rx Rx =IU / RU / r, the carbon paper resistance R can be calculated X =U / I Rx , U and I are the values ​​detected by the voltage and current sensors at this moment, where R is a known fixed resistance.

[0050] In one embodiment of the present invention, the calculation control unit calculates the resistivity ρ of the carbon paper according to the thickness L, area S and resistance Rx of the carbon paper according to the following predetermined formula:

[0051] ρ=Rx×L / S.

[0052] In one embodiment of the present invention, a display and operation unit is further included, the display and operation unit is used to receive and display the detection data of the detection data acquisition unit and the carbon paper resistivity calculated by the calculation control unit, and input control operation instructions to the calculation control unit through the HMI interface provided by the display and operation unit. The result of each measurement and the intermediate value of the process can be intuitively observed through the display and operation unit, and the process of each measurement can be well analyzed.

[0053] like Figure 3 As shown, the method for online automatic detection of carbon paper resistivity of the present invention uses the above automatic detection equipment, and the method comprises the following steps:

[0054] Step S310: After the lifting head is controlled to rise to a certain position, the thickness L of the carbon paper is collected by the thickness detection sensor, and the area S of the carbon paper is collected by the area detection sensor;

[0055] Step S320: Control the lifting pressure head to descend until it contacts and connects with the carbon paper, collect the voltage U of the carbon paper through the voltage detection sensor, and collect the current I of the carbon paper through the current detection sensor;

[0056] Step S330: Calculate the carbon paper resistivity ρ according to the thickness L, area S, carbon paper voltage U and carbon paper current I of the carbon paper.

[0057] In one embodiment of the present invention, between step S310 and step S320, the following steps are further included:

[0058] The voltage U when the lifting pressure head is not in contact with the carbon paper is collected by the voltage detection sensor 1 The current I when the lifting pressure head is not in contact with the carbon paper is collected by the current detection sensor 1 , according to the voltage U 1 、Current I 1 The internal resistance r of the voltage detection sensor is calculated by adding the step of calculating the internal resistance of the voltage detection sensor. The influence of the internal resistance of the voltage detection sensor on the calculation result of the carbon paper resistivity can be eliminated, and the detection accuracy can be further improved.

[0059] In order to enable those skilled in the art to more clearly understand the scheme of the present invention, a specific process of a detection method is now listed for illustration.

[0060] like Figure 4 As shown, the automatic operation steps are as follows:

[0061] Step 1: Set the number of measurement groups M and the number of measurements per group N on the HMI operation interface.

[0062] Step 2: Click the "Device Initialization" button on the HMI interface to return the lifting motor to its initial state, and set the actual measurement group number m and measurement number n to 0.

[0063] Step 3: Place the carbon paper to be tested on the surface of the conductive electrode, click the "Start Measurement" button on the HMI operation interface, and the lifting motor will automatically move the voltage drop head downward.

[0064] Step 4: When the required pressure value is reached, the lifting motor automatically stops running. After 5 seconds, the PLC automatically collects the current voltage value U and current value I.

[0065] Step 5: After another 5 seconds, the lifting motor's rising pressure drop head automatically moves upward. When it touches the limit switch, the lifting motor's rising pressure drop head immediately stops moving.

[0066] Step 6: After 5 s, the PLC automatically collects the carbon paper thickness L and the carbon paper area S value at the current moment.

[0067] Step 7: The PLC automatically calculates the resistivity ρ of a single piece of carbon paper and presents this value on the HMI interface. After 5 s, an end flag bit is triggered.

[0068] Step 7: End this measurement and increment the measurement count n by 1.

[0069] Step 8: The program automatically determines whether the measurement count n is equal to the set value N. If not, return to Step 3, place the carbon paper, and perform the next measurement; if equal, the PLC automatically calculates the average value ρ_avg of the data from these N measurements and displays it on the HMI interface, and increment the measurement group count m by 1.

[0070] Step 9: The program automatically determines whether the measurement group count m is equal to the set value M. If not, automatically assign the measurement count n to 0 and return to Step 8; if equal, end all measurements, and display an all-measurements-ended flag on the HMI interface and emit a relevant alarm sound.

[0071] Step 10: On the HMI interface, manually click the "Measurement End" button, and the alarm interface and alarm sound are automatically eliminated.

[0072] The present invention can achieve grouped batch detection of carbon paper, greatly improving the detection efficiency of carbon paper resistivity while realizing automatic detection. It should be noted that the time in the operation steps does not necessarily have to be set to 5 s, and a most reasonable time can be selected through actual operation. The measured result values can be selected to be stored separately in the PLC unit, which is beneficial for later data analysis and processing.

[0073] The above technical solution overcomes many limitations of the traditional carbon paper resistivity detection method and has significant technical effects, which are specifically manifested in the following aspects:

[0074] 1. Significantly improved detection efficiency

[0075] This device realizes the rapid positioning and measurement of carbon paper through the collaborative work of the automated indenter module and the drive unit, eliminating the steps of manual adjustment and operation, greatly improving the detection efficiency, and meeting the requirements of mass production.

[0076] 2. Higher detection accuracy

[0077] The detection data acquisition unit integrates the automated acquisition of carbon paper thickness, area, voltage, and current data, avoiding data deviation caused by manual operation. At the same time, the calculation and control unit calculates the resistivity in real time based on high-precision data, further reducing the deviation caused by the internal resistance of the device or the error of manually recording data, ensuring the accuracy and consistency of the test results.

[0078] 3. High degree of operation automation

[0079] The equipment integrates the function of automatically raising and lowering the pressure head. The movement of the pressure head module is controlled by the drive unit, which can realize the detection process without human intervention. This not only reduces labor costs, but also reduces the detection inconsistency caused by differences in operator skills and improves the reliability of detection.

[0080] 4. Real-time and intelligent

[0081] By computing the real-time data processing capabilities of the control unit, the equipment can immediately calculate the resistivity of the carbon paper while collecting data and output the results, avoiding the time delay of manual recording and post-analysis in traditional testing, and providing the possibility for rapid quality feedback in the production process.

[0082] 5. Strong compatibility and adaptability

[0083] The equipment can adapt to various testing needs by adjusting the pressure head module and data acquisition unit according to carbon paper samples of different specifications. It has high versatility and flexibility and can be widely used in online testing of different types of carbon papers.

[0084] In summary, this technical solution not only improves the efficiency and accuracy of carbon paper resistivity detection, but also realizes full automation of the detection process, solves the problems of low efficiency, large errors and insufficient automation in traditional methods, and provides an efficient and reliable detection solution for industrial production.

[0085] In addition, in an exemplary embodiment of the present disclosure, an electronic device capable of implementing the above method is also provided, including a processor; and a memory, wherein computer-readable instructions are stored in the memory, and the computer-readable instructions implement the above method when executed by the processor.

[0086] It will be appreciated by those skilled in the art that various aspects of the present invention may be implemented as systems, methods or program products. Therefore, various aspects of the present invention may be specifically implemented in the following forms, namely: complete hardware embodiments, complete software embodiments (including firmware, microcode, etc.), or embodiments combining hardware and software aspects, which may be collectively referred to herein as "circuits", "modules" or "systems".

[0087] The electronic device is presented in the form of a general-purpose computing device. The components of the electronic device may include, but are not limited to: at least one processing unit, at least one storage unit, a bus connecting different system components (including the storage unit and the processing unit), and a display unit.

[0088] The storage unit stores program codes, which can be executed by the processing unit, so that the processing unit performs the steps according to various exemplary embodiments of the present invention described in the above “Exemplary Method” section of this specification. For example, the processing unit can perform the following steps: Figure 3 Steps S110 to S170 shown in FIG.

[0089] The storage unit may include a readable medium in the form of a volatile storage unit, such as a random access memory unit (RAM) and / or a cache memory unit, and may further include a read-only memory unit (ROM).

[0090] The storage unit may also include a program / utility having a set (at least one) of program modules, such program modules including but not limited to: an operating system, one or more application programs, other program modules, and program data, each of which or some combination may include an implementation of a network environment.

[0091] The bus may represent one or more of several types of bus structures, including a memory unit bus or memory unit controller, a peripheral bus, an accelerated graphics port, a processing unit, or a local bus using any of a variety of bus architectures.

[0092] The electronic device can also communicate with one or more external devices (such as keyboards, pointing devices, Bluetooth devices, etc.), and can also communicate with one or more devices that enable users to interact with the electronic device, and / or communicate with any device (such as routers, modems, etc.) that enables the electronic device to communicate with one or more other computing devices. This communication can be carried out through an input / output (I / O) interface. In addition, the electronic device can also communicate with one or more networks (such as local area networks (LANs), wide area networks (WANs) and / or public networks, such as the Internet) through a network adapter. As shown in the figure, the network adapter communicates with other modules of the electronic device through a bus. It should be understood that, although not shown in the figure, other hardware and / or software modules can be used in conjunction with the electronic device, including but not limited to: microcode, device drivers, redundant processing units, external disk drive arrays, RAID systems, tape drives, and data backup storage systems, etc.

[0093] Through the description of the above embodiments, it is easy for those skilled in the art to understand that the example embodiments described here can be implemented by software, or by software combined with necessary hardware. Therefore, the technical solution according to the embodiment of the present disclosure can be embodied in the form of a software product, which can be stored in a non-volatile storage medium (which can be a CD-ROM, a USB flash drive, a mobile hard disk, etc.) or on a network, and includes several instructions to enable a computing device (which can be a personal computer, a server, a terminal device, or a network device, etc.) to execute the method according to the embodiment of the present disclosure.

[0094] In an exemplary embodiment of the present disclosure, a computer-readable storage medium is also provided, on which a program product capable of implementing the above method of the present specification is stored. In some possible embodiments, various aspects of the present invention can also be implemented in the form of a program product, which includes a program code, and when the program product is run on a terminal device, the program code is used to enable the terminal device to perform the steps according to various exemplary embodiments of the present invention described in the above "Exemplary Method" section of the present specification.

[0095] The program product for implementing the above method according to an embodiment of the present invention may adopt a portable compact disk read-only memory (CD-ROM) and include program code, and may be run on a terminal device, such as a personal computer. However, the program product of the present invention is not limited thereto, and in this document, a readable storage medium may be any tangible medium containing or storing a program, which may be used by or in combination with an instruction execution system, apparatus, or device.

[0096] The program product may use any combination of one or more readable media. The readable medium may be a readable signal medium or a readable storage medium. The readable storage medium may be, for example, but not limited to, an electrical, magnetic, optical, electromagnetic, infrared, or semiconductor system, device or device, or any combination of the above. More specific examples (non-exhaustive list) of readable storage media include: an electrical connection with one or more wires, a portable disk, a hard disk, a random access memory (RAM), a read-only memory (ROM), an erasable programmable read-only memory (EPROM or flash memory), an optical fiber, a portable compact disk read-only memory (CD-ROM), an optical storage device, a magnetic storage device, or any suitable combination of the above.

[0097] Computer readable signal media may include data signals propagated in baseband or as part of a carrier wave, in which readable program code is carried. Such propagated data signals may take a variety of forms, including but not limited to electromagnetic signals, optical signals, or any suitable combination of the above. Readable signal media may also be any readable medium other than a readable storage medium, which may send, propagate, or transmit a program for use by or in conjunction with an instruction execution system, apparatus, or device.

[0098] The program code embodied on the readable medium may be transmitted using any appropriate medium, including but not limited to wireless, wired, optical cable, RF, etc., or any suitable combination of the foregoing.

[0099] Program code for performing the operations of the present invention may be written in any combination of one or more programming languages, including object-oriented programming languages ​​such as Java, C++, etc., and conventional procedural programming languages ​​such as "C" or similar programming languages. The program code may be executed entirely on the user computing device, partially on the user device, as a separate software package, partially on the user computing device and partially on a remote computing device, or entirely on a remote computing device or server. In cases involving a remote computing device, the remote computing device may be connected to the user computing device through any type of network, including a local area network (LAN) or a wide area network (WAN), or may be connected to an external computing device (e.g., through the Internet using an Internet service provider).

[0100] In addition, the above-mentioned figures are only schematic illustrations of the processes included in the method according to an exemplary embodiment of the present invention, and are not intended to be limiting. It is easy to understand that the processes shown in the above-mentioned figures do not indicate or limit the time sequence of these processes. In addition, it is also easy to understand that these processes can be performed synchronously or asynchronously, for example, in multiple modules.

[0101] Those skilled in the art will readily appreciate other embodiments of the present disclosure after considering the specification and practicing the invention disclosed herein. This application is intended to cover any variations, uses, or adaptations of the present disclosure that follow the general principles of the present disclosure and include common knowledge or customary technical means in the art that are not disclosed in the present disclosure. The specification and examples are to be considered as exemplary only, and the true scope and spirit of the present disclosure are indicated by the claims.

[0102] It should be understood that the present disclosure is not limited to the exact structures that have been described above and shown in the drawings, and that various modifications and changes may be made without departing from the scope thereof. The scope of the present disclosure is limited only by the appended claims.

Claims

1. A carbon paper resistivity online automatic detection device, characterized in that: It includes a pressure head module, a detection data acquisition unit, a driving unit and a calculation control unit; The driving unit is used to drive the lifting and lowering of the pressure head of the pressure head module; The detection data acquisition unit is used to collect the thickness and area data of the carbon paper and the carbon paper voltage and current data required for calculating the carbon paper resistance; The calculation control unit is used to receive the detection data collected by the detection data collection unit in real time and calculate the resistivity of the carbon paper according to the detection data.

2. The carbon paper resistivity online automatic detection device according to claim 1, characterized in that: The detection data acquisition unit includes a current detection sensor, a voltage detection sensor, a thickness detection sensor, and an area detection sensor. The thickness detection sensor and the area detection sensor are arranged on the lifting pressure head of the pressure head module to control the relative position between the lifting pressure head and the carbon paper, so as to detect the thickness L of the carbon paper through the thickness detection sensor and detect the area S of the carbon paper through the area detection sensor; the voltage detection sensor is connected in parallel with the carbon paper arranged between the upper and lower electrodes of the pressure head module to detect the carbon paper voltage U set between the upper and lower electrodes, and the current detection sensor is connected in series with the carbon paper arranged between the upper and lower electrodes of the pressure head module to detect the carbon paper current I set between the upper and lower electrodes.

3. The carbon paper resistivity online automatic detection device according to claim 1, characterized in that: It also includes a pressure detection sensor, which is arranged on the lifting pressure head. The calculation control unit determines whether the pressure head module is in contact with the carbon paper based on the comparison result of the pressure value detected in real time by the pressure detection sensor and the predetermined pressure threshold.

4. The carbon paper resistivity online automatic detection device according to claim 2, characterized in that: It also includes a fixed resistor R, which is connected to the upper and lower electrodes of the pressure head module to eliminate the error influence of the internal resistance of the voltage detection sensor on the calculation result of the carbon paper resistance.

5. The carbon paper resistivity online automatic detection device according to claim 4, characterized in that: The calculation control unit calculates the carbon paper resistance Rx according to the carbon paper voltage U and the carbon paper current I according to the following predetermined formula: R X =U / (I-U / R-U / r), Among them, Rx represents the carbon paper resistance, U represents the carbon paper voltage, I represents the carbon paper current, r represents the internal resistance of the voltage detection sensor, and R represents the fixed resistance.

6. The carbon paper resistivity online automatic detection device according to claim 1 or 5, characterized in that: The calculation control unit calculates the resistivity ρ of the carbon paper according to the thickness L, area S and resistance Rx of the carbon paper according to the following predetermined formula: ρ=Rx×L / S.

7. The carbon paper resistivity online automatic detection device according to claim 1, characterized in that: It also includes a display and operation unit, which is used to receive and display the detection data of the detection data acquisition unit and the carbon paper resistivity calculated by the calculation control unit, and input control operation instructions to the calculation control unit through an HMI interface provided by the display and operation unit.

8. A method for online automatic detection of carbon paper resistivity, characterized in that: The steps include: Step 1) After the lifting head is controlled to rise to a certain position, the thickness L of the carbon paper is collected by a thickness detection sensor, and the area S of the carbon paper is collected by an area detection sensor; Step 2) Control the lifting pressure head to descend until it contacts and connects with the carbon paper, collect the voltage U of the carbon paper through the voltage detection sensor, and collect the current I of the carbon paper through the current detection sensor; Step 3) Calculate the carbon paper resistivity ρ according to the thickness L, area S, carbon paper voltage U and carbon paper current I of the carbon paper.

9. An electronic device, characterized in that: include: processor; as well as A memory having computer-readable instructions stored thereon, wherein the computer-readable instructions implement the method according to claim 8 when executed by the processor.

10. A computer-readable storage medium, characterized in that: A computer program is stored thereon, and when the computer program is executed by a processor, the method according to claim 8 is implemented.

Images