Ionization equipment performance detection device

Abstract

The embodiment of the invention discloses an ionization equipment performance detection device. The device comprises a capacitor which comprises a first polar plate and a second polar plate which are arranged in parallel; the detection flat plate is connected in series with the first polar plate, has the same potential with the first polar plate and is used for receiving ion current generated by the detected ionization equipment; the current detection module is respectively connected with the first polar plate and the detection flat plate, and the current detection module is used for measuring current generated by the ion current received by the detection flat plate; one end of the high-voltage generator is connected with the first polar plate, and the other end is grounded together with the second polar plate; and the control module is respectively connected with the current detection module and the high-voltage generator, and is configured to control and adjust the target voltage output by the high-voltage generator according to the current measured by the current detection module, and determine the performance parameters of the detected ionization equipment. Through the embodiment of the invention, the technical problem of how to improve the detection accuracy is solved.

Description

Technical Field

[0001] The present application relates to the technical field of electronic detection equipment, and in particular to a device for detecting the performance of an ionization device. Background Art

[0002] Ionization equipment is a core technology for electrostatic protection in modern industry. Its core mechanism is to ionize air molecules through high-voltage corona discharge, generating an equal flow of positive and negative ions. These ions are then precisely directed toward the surface of statically charged objects using an airflow system. Based on the physical principle that opposite charges attract, static charges accumulated on surfaces are neutralized by ions of opposite polarity, quickly eliminating the risk of static electricity.

[0003] Ionization device performance parameters (such as dissipation time and equilibrium voltage) can drift due to electrode aging or environmental changes, leading to ESD protection failure. In industrial scenarios, equipment performance degradation can lead to excessive particulate contamination or process failures. Therefore, performance testing of ionization equipment is particularly important. Existing ionization equipment performance testing devices are susceptible to voltage (charge) dissipation or decay caused by factors external to the ionization device, such as leakage in the test circuitry of the performance testing device itself, resulting in inaccurate performance measurements of the ionization device. Summary of the Invention

[0004] The present application aims to solve at least one of the technical problems existing in the prior art. To this end, the present application proposes an ionization device performance detection device to solve the technical problem of how to improve detection accuracy.

[0005] The present application provides an ionization device performance detection device, comprising: A capacitor comprising a first plate and a second plate arranged in parallel; a detection plate connected in series with the first electrode plate and having the same potential as the first electrode plate, the detection plate being used to receive the ion flow generated by the ionization device being tested; a current detection module, connected to the first electrode plate and the detection plate, respectively, the current detection module being configured to measure a first current generated by the ion flow received by the detection plate and to determine a second current corresponding to the capacitor based on the first current; a high-voltage generator, one end of which is connected to the first electrode plate, and the other end of which is grounded together with the second electrode plate, the high-voltage generator being used to provide voltage to the capacitor; A control module is connected to the current detection module and the high voltage generator respectively, and the control module is configured to: Calculating the average current in the current preset sampling period according to the second current measured by the current detection module; Calculating a voltage change value of the capacitor corresponding to the current preset sampling period based on the average current in the current preset sampling period, the duration of the preset sampling period, and the capacitance of the capacitor; calculating a target voltage that the high voltage generator needs to provide to the capacitor in a next preset sampling period based on the voltage change value corresponding to the current preset sampling period and the current voltage provided to the capacitor by the high voltage generator in the current preset sampling period, and controlling the high voltage generator to output the target voltage in the next preset sampling period; Multiple sampling cycles are cycled, and a voltage variation curve over time is generated based on the voltage output by the high-voltage generator to the capacitor in each preset sampling cycle and the preset sampling cycle, and the performance parameters of the ionization device under test are determined according to the voltage variation curve over time.

[0006] In at least some embodiments of the present application, the control module is configured to: Calculating the amount of charge arriving at the detection plate during the current preset sampling period based on the average current during the current preset sampling period and the duration of the preset sampling period; Calculating a voltage change value of the detection plate corresponding to the current preset sampling period according to the amount of charge reaching the detection plate during the current preset sampling period and the capacitance of the capacitor; The control module is further configured to: The target voltage that the high voltage generator needs to provide to the capacitor in the next preset sampling period is calculated based on the difference between the current voltage provided by the high voltage generator to the capacitor in the current preset sampling period and the voltage change value of the detection plate corresponding to the current preset sampling period.

[0007] In at least some embodiments of this application, Obtaining the de-energization time of the ionization device under test based on the time corresponding to the first drop of the voltage to the preset attenuation voltage value in the voltage variation curve over time; The equilibrium voltage of the ionization device under test is obtained based on the maximum absolute value of the voltage in the curve portion after the de-energization time in the curve of the voltage variation with time.

[0008] In at least some embodiments of the present application, a first insulating support member is provided between the first electrode plate and the second electrode plate; A second insulating support is provided on a side of the first electrode plate away from the second electrode plate; the detection plate is provided on the second insulating support; The first electrode plate, the second electrode plate and the detection plate have the same size; The first electrode plate, the second electrode plate and the detection plate have rough surfaces or are all coated with thin films.

[0009] In at least some embodiments of the present application, the first insulating support member is columnar, and the area of ​​a cross section of the first insulating support member perpendicular to the axial direction is smaller than the area of ​​the first electrode plate; The second insulating support member is plate-shaped, and the area of ​​the second insulating support member is the same as the area of ​​the detection plate; The second insulating support member is provided with a mounting portion protruding from the surface, and the mounting portion is arranged relative to the detection plate; The mounting portion is disposed close to and around an edge of the second insulating support member.

[0010] In at least some embodiments of the present application, the current detection module includes a sampling resistor, an operational amplifier, and an ADC analog-to-digital converter connected in sequence; the sampling resistor is connected to the detection plate and the first electrode plate, and the ADC analog-to-digital converter is connected to the control module.

[0011] In at least some embodiments of the present application, the high voltage generator is further configured to apply a preset detection voltage to the first electrode plate before the apparatus detects the ionization device under test; The current detection module is further used to measure the current value on the first electrode plate under the preset voltage; The control module is further configured to determine whether the insulation between the first electrode plate and the second electrode plate meets detection requirements based on the current value on the first electrode plate, and to control the ionization equipment performance detection device to start a detection function if it is determined that the detection requirements are met.

[0012] In at least some embodiments of the present application, the device further includes a temperature and humidity sensor, which is connected to the control module; The control module is further configured to obtain, through the temperature and humidity sensor, the ambient temperature and humidity corresponding to each performance parameter test result of the ionization device being tested; and / or, The control module is further configured to correct the performance parameters of the ionization device under test according to the ambient temperature and humidity measured by the temperature and humidity sensor; and / or, The control module is further configured to control the ionization device performance detection device to start a detection function when the ambient temperature and humidity measured by the temperature and humidity sensor meet preset values.

[0013] In at least some embodiments of the present application, the device further includes a display connected to the control module; the display is used to display the performance parameters of the ionization device being measured and the ambient temperature and humidity measured by the temperature and humidity sensor. In at least some embodiments of the present application, the capacitance of the capacitor is 20pF±2pF.

[0014] One or more of the above embodiments of the present application have at least one or more of the following beneficial effects: By providing a detection plate structure, this application effectively prevents the voltage drop caused by charge leakage between the plates after the capacitor is charged, thereby more accurately measuring the current generated by the ionization device being tested and improving the detection accuracy of the entire performance detection device. Furthermore, because the detection plate and the first plate connected to the current detection module have the same potential, and the capacitor voltage is controlled and stabilized by a high-voltage generator, it is not affected by external factors other than the ionization device being tested or the structural circuitry of the detection device itself, making the detection results more stable, accurate, and reliable.

[0015] Additional aspects and advantages of the present application will be given in part in the description below, and in part will become apparent from the description below, or will be learned through practice of the present application. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The disclosure of this application will be more easily understood with reference to the accompanying drawings. Those skilled in the art will readily appreciate that these drawings are for illustrative purposes only and are not intended to limit the scope of protection of this application. Furthermore, similar numbers in the figures represent similar components, where: Figure 1 is a schematic structural diagram of an ionization device performance detection device according to one embodiment of the present application; Figure 2 is a schematic diagram of a curve showing test voltage variation over time according to an embodiment of the present application; Figure 3 is a schematic diagram of the mechanical structure of a capacitor and a detection plate according to one embodiment of the present application; Figure 4 is a schematic diagram of the circuit principle structure of a current detection module according to an embodiment of the present application; Figure 5 This is a schematic diagram of the circuit principle structure of an ionization device performance detection device according to one embodiment of the present application; The marks in the figure are: 100, capacitor; 101, first electrode; 102, second electrode; 103, first insulating support; 200, detection plate; 201, second insulating support; 202, mounting part; 300, current detection module; 400, high voltage generator; 500, control module. DETAILED DESCRIPTION

[0017] Some embodiments of the present application are described below with reference to the accompanying drawings. Those skilled in the art should understand that these embodiments are only used to explain the technical principles of the present application and are not intended to limit the scope of protection of the present application.

[0018] As described in the background art, the function of an ionization device is to generate an ion flow to neutralize static electricity on the surface of an object. The detection principle of an ionization performance detection device is to simulate an object with a charged surface (i.e., a de-charged target, the device to be de-charged) and measure the de-charged performance of the ionization device by detecting the effect of the ionization device on the charge of the de-charged target. This requires that the charge of the de-charged target be completely dissipated or decayed by the ionization device in order for the test results to be accurate and reliable. However, due to factors such as temperature and humidity changes, airflow disturbances, and the components of the detection device itself, the charge of the de-charged target may naturally dissipate or decay, resulting in changes in its surface charge not being entirely caused by the action of the ionization device, which in turn causes inaccurate performance test results of the ionization device.

[0019] Based on this, the present application provides an ionization device performance detection device, which aims to ensure that the charge of the de-charged target is only affected by the ionization device and is not interfered with by other external factors or components of the detection device itself, thereby improving the accuracy and reliability of the detection.

[0020] See attached Figure 1 In one or more embodiments, an ionization device performance detection device of the present application includes: The capacitor 100 includes a first plate 101 and a second plate 102 arranged in parallel; The detection plate 200 is connected in series with the first electrode plate 101 and has the same potential as the first electrode plate 101. The detection plate 200 is used to receive the ion flow generated by the ionization device under test; a current detection module 300 connected to the first electrode plate 101 and the detection plate 200, respectively, and configured to measure a first current generated by the ion flow received by the detection plate 200 and determine a second current corresponding to the capacitor 100 based on the first current; A high-voltage generator 400 , one end of which is connected to the first electrode plate 101 and the other end of which is grounded together with the second electrode plate 102 . The high-voltage generator 400 is used to provide voltage to the capacitor 100 ; The control module 500 is connected to the current detection module 300 and the high voltage generator 400, respectively. The control module 500 is configured as follows: Calculating the average current in the current preset sampling period according to the second current measured by the current detection module 300; The voltage change value of the capacitor 100 corresponding to the current preset sampling period is calculated based on the average current in the current preset sampling period, the duration of the preset sampling period, and the capacitance of the capacitor 100; Calculating the target voltage that the high-voltage generator 400 needs to provide to the capacitor 100 in the next preset sampling period based on the voltage change value corresponding to the current preset sampling period and the current voltage provided by the high-voltage generator 400 to the capacitor 100 in the current preset sampling period, and controlling the high-voltage generator 400 to output the target voltage in the next preset sampling period; Multiple sampling cycles are cycled, and a voltage variation curve is generated based on the voltage output by the high voltage generator 400 to the capacitor 100 in each preset sampling cycle and the preset sampling cycle, and the performance parameters of the ionization device under test are determined according to the voltage variation curve.

[0021] The performance parameters of the ionization device under test include at least de-charge time and equilibrium voltage.

[0022] Based on the above embodiment, a possible working process of an ionization device performance detection device of the present application is as follows: The control module 500 controls the high-voltage generator 400 to apply an initial voltage U0 (typically + / - 1000V) to the capacitor 100. The capacitor 100 serves as a simulated de-charge target. Because the first electrode 101 and the detection plate 200 have the same potential, the voltage applied by the high-voltage generator 400 to the first electrode 101 is equivalent to the voltage applied to the detection plate 200. Therefore, the detection plate 200 and the capacitor 100 constitute a new simulated de-charge target, with the detection plate 200 serving as the detection object. receiving the ion flow generated by the ionization device under test through the detection plate 200; The current detection module 300 calculates the first current generated by the ion flow, wherein, since the detection plate 200 is connected in series with the first electrode plate 101, the first current generated on the detection plate 200 is equal to the second current of the capacitor 100; The control module 500 reads the current from the current detection module 300 during the test and sets the sampling period. t; Calculate the average current flow I1 during the first sampling period on the detection plate 200 based on the read current; Calculate the sampling period based on the average current I1 The amount of charge reaching the detection plate 200 within t is Q1 = I1 t, and then the voltage change of the first detection plate 200 is obtained: U1= Q1 / C, where C is the capacitance of capacitor 100; Control the target voltage output by the high voltage generator 400 to the capacitor 100 in the next preset sampling period to U1 = U0 + U1; and record the voltage and time; After the above sampling and calculation process is repeated, the target voltage output by the high voltage generator 400 to the capacitor 100 corresponding to each sampling period can be obtained, thereby obtaining the plate voltage-time sequence (U i ,t i ), store data and draw voltage-time curve, refer to Figure 2 ; The voltage and time curve (U i ,t i ) Figure 1: Determine the performance parameters of the ionization device under test: The time corresponding to the first drop of voltage U(i) to the set voltage, such as + / -100V or the test time limit, is the de-energization time t 消电 ;(U i ,t i ) In the figure, after the de-energization time (t i >t 消电 The maximum absolute value of the voltage in the voltage-time curve of the equilibrium voltage U 平衡 .

[0023] Among them, the control module 500 not only controls the high-voltage generator 400 to adjust the voltage when the sampling cycle switches, but also continuously samples and calibrates the output voltage of the high-voltage generator 400 within a single sampling cycle, so that the voltage of the capacitor 100 and the detection plate 200 is maintained within a sampling cycle.

[0024] By providing a detection plate 200 structure, the present application can effectively prevent the voltage drop caused by charge leakage between the plates of the capacitor 100 after charging (which can be understood as eliminating the charge leakage problem caused by the device's own components), thereby more accurately measuring the current generated by the ionization device being tested, and improving the detection accuracy of the entire performance detection device. At the same time, because the detection plate 200 and the first plate 101 connected to the current detection module 300 have the same potential, and the voltage of the capacitor 100 is controlled and stabilized by the high-voltage generator 400, it is not affected by any external factors other than the ionization device being tested or the structural circuit of the detection device itself. The target voltage value is always maintained before the ionization device is affected, making the detection results more stable, accurate, and reliable.

[0025] In one embodiment, reference Figure 3 A first insulating support 103 is provided between the first electrode plate 101 and the second electrode plate 102. The function of the first insulating support 103 is to support the assembly of the first electrode plate 101 and the second electrode plate 102 so that the first electrode plate 101 and the second electrode plate 102 form a capacitor 100; a second insulating support 201 is provided on the side of the first electrode plate 101 away from the second electrode plate 102; the detection plate 200 is provided on the second insulating support 201, the detection plate 200 is electrically connected to the first electrode plate 101, and the second insulating support 201 is used to support and install the detection plate 200.

[0026] In one possible embodiment, the first electrode plate 101, the second electrode plate 102, and the detection plate 200 are of the same size. For example, each is a 15x15 cm metal plate. The detection plate 200 is the same size as the first electrode plate 101, facilitating installation while maintaining consistent parameters with the first electrode plate 101. This facilitates equalization of electrical potential and fully simulates the effect of replacing the first electrode plate 101, thereby improving detection accuracy.

[0027] In one possible embodiment, the first insulating support member 103 is cylindrical, and the area of ​​the cross-section of the first insulating support member 103 perpendicular to the axial direction is smaller than the area of ​​the first electrode 101, ensuring the installation function while not affecting the normal use of the capacitor 100 and minimizing the leakage effect caused by the first insulating support member 103; the second insulating support member 201 is plate-shaped, and the area of ​​the second insulating support member 201 is the same as the area of ​​the detection plate 200, ensuring the installation support function of the detection plate 200 while filling the space between the detection plate 200 and the first electrode 101 as much as possible, preventing the detection plate 200 and the first electrode 101 from short-circuiting due to impurities, so that the electric field between the two plates is zero everywhere and no potential difference is generated.

[0028] In one possible embodiment, the second insulating support 201 is provided with a mounting portion 202 protruding from the surface, and the mounting portion 202 is arranged relative to the detection plate 200; the mounting portion 202 is arranged close to and around the edge of the second insulating support 201, and the detection plate 200 is mounted on the second insulating support 201 via the mounting portion 202. While playing a role in stable installation, the protrusion has a buffering and isolating effect, preventing the mounting screws and other fasteners from being tightened too much, causing deformation and damage to the detection plate 200. Furthermore, the detection plate 200 can be mounted on the second insulating support 201 by means of threaded connection, snap connection, etc., and the first electrode 101 and the second electrode 102 can be connected to the first insulating support 103 by means of snap connection, interference fit, etc. The specific connection method is not limited, but it should be noted that the connector needs to be made of insulating material to prevent leakage or the formation of potential difference.

[0029] The capacitance value of the capacitor is 20pF±2pF. Since in this application, capacitor 100 simulates the capacitance formed by various objects that need to be de-staticized in life and production and other objects (such as the earth), and the capacitance value formed by most objects and other objects (such as the earth) is around 20pF, a 15x15cm, 20pF metal parallel plate capacitor is used in the device. In actual use, different plate sizes and capacitance values ​​simulate the voltage change curves when different objects in life and production are de-staticized, and the final test results may also be different. Capacitors of corresponding specifications can be selected according to actual test requirements. However, capacitors of different specifications used in the technical solution of this application still belong to the technical solution of this application and should be within the scope of protection of this application.

[0030] In one possible embodiment, the two plates of capacitor 100 and detection plate 200 are made of metal materials with excellent electrical conductivity and chemical stability. The excellent electrical conductivity of the metal ensures that after the ion flow reaches the detection plate 200, the charge is quickly and stably transferred, ensuring measurement accuracy. The chemical stability ensures that the performance and measurement results of the two plates of capacitor 100 and detection plate 200 will not be affected by chemical reactions under different operating environments. Furthermore, the surfaces of the two plates of capacitor 100 and detection plate 200 are treated to enhance the efficiency of receiving the ion flow. For example, nanoscale roughening treatment or coating with a special thin film, such as an active nano / porous precious metal film, a defective / structured transition metal compound film, an amorphous alloy film, a carbon-based composite film, a bimetallic / multimetallic alloy, or a core-shell film, can increase the number of active sites on the surfaces of the two plates of capacitor 100 and detection plate 200, making it easier for ions to attach to the detection plate 200, thereby enhancing the efficiency of receiving the ion flow and further improving the accuracy of the assessment.

[0031] In one embodiment, reference Figure 4The current detection module 300 includes a sampling resistor, an operational amplifier, and an ADC (analog-to-digital converter) connected in sequence. The sampling resistor is connected to the detection plate 200 and the first electrode plate 101, and the ADC is connected to the control module 500. Specifically, the sampling resistor is connected to the detection plate 200. After the detection plate 200 receives the ion flow from the ionization device being measured, the charge movement generates a current. The sampling resistor can convert this current into a small differential voltage (Ohm's law), which reflects the magnitude and direction of the measured current. The operational amplifier amplifies this small differential voltage and outputs an amplified analog voltage signal to the ADC. The ADC converts the conditioned analog voltage signal output by the operational amplifier into a digital signal (binary code), so that the control module 500 can subsequently obtain the current value through this digital signal for processing, display, storage, or control. At the same time, the sampling resistor is connected to the first electrode plate 101 to sample the current of the capacitor 100. The transmission process is the same as that to the control module 500, and the repeated parts will not be repeated.

[0032] In one embodiment, the high-voltage generator 400 can be a high-precision, controllable positive and negative high-voltage generator 400 capable of voltage regulation and output within ±1 kV. The purpose of the high-voltage generator 400 being controlled and adjusted by the control module 500 to adjust the output voltage and polarity is to enable the detection plate 200 and capacitor 100 to simulate the voltage change over time during the static elimination process of a charged object.

[0033] In one embodiment, capacitor 100 is a key detection component of the ionization device. Ideally, the two plates should be completely insulated. However, due to the surface resistance of the dielectric between the two plates, complete insulation is not practically possible. Before use, the detection device of the present application can determine the insulation level between the plates of capacitor 100 through the coordination of various components. If the insulation level is high, testing of the ionization device is initiated. This means that only when the insulation level meets the detection requirements can the detection device be activated to test the ionization device, thereby ensuring the normal operation of the detection device and the accuracy of the measurement results.

[0034] Specifically, in an environment where no ionizing equipment is operating, the high-voltage generator 400 applies a preset constant high voltage to the first plate 101 of the capacitor 100; since one end of the current detection module 300 is connected to the first plate 101, the current detection module 300 can measure the current value on the first plate 101 under the constant high voltage; the control module 500 reads the current value measured by the current detection module 300 at this time to determine the degree of insulation between the two plates of the capacitor 100. The specific insulation level can be set according to actual detection requirements or standards. For example, if the current measured by the current detection module 300 is zero, the two plates can be considered to be completely insulated (an ideal state), the detection device can start the detection work, and it is considered that the detection result is valid under this insulation state; if the current measured by the current detection module 300 is less than the first threshold, the two plates can be considered to be in a state of near complete insulation. The near complete insulation state means that the charge leaked between the plates per unit time does not exceed the level that affects the detection result. The detection device can still start the detection work and the detection result is still valid; if the current measured by the current detection module 300 is greater than the first threshold, the insulation level between the two plates is low, and the detection device cannot perform the detection work normally. The setting of the first threshold for the detection requirement and the level of charge leakage not exceeding the level that affects the detection result can be set according to actual detection requirements and standards, and this application does not impose specific restrictions on this. For example, the first threshold can be 6.6pA, and the level of charge leakage not exceeding the level that affects the detection result is that the charge leakage between the two plates exceeds 10% within 5 minutes.

[0035] In one embodiment, reference Figure 5 The detection device also includes a temperature and humidity sensor, which is used to measure the temperature and humidity in the current detection environment. Ambient temperature and humidity will change the conductivity of the air and the mean free path of ions, thereby affecting the movement of ions; at the same time, they will also affect the recombination between positive and negative ions, thereby affecting the de-electrification effect of the ion wind generated by the ionization device, and ultimately affecting the judgment and calculation of the performance of the ionization device in the detection results. In order to more accurately calculate the performance of the ionization device, the temperature and humidity sensor is connected to the control module 500 and cooperates with other components in the detection device to implement any of the following functions to improve the accuracy and reliability of the detection results.

[0036] Specifically, the temperature and humidity sensor can obtain the ambient temperature and humidity corresponding to each performance parameter test result of the ionization device being tested, and clearly inform the tester of the environment corresponding to the test so that the tester can comprehensively consider the test result.

[0037] Specifically, the temperature and humidity sensor obtains the ambient temperature and humidity corresponding to the test and transmits them to the control module 500. The control module 500 corrects the performance parameters of the ionization device under test according to the current ambient temperature and humidity to make the test results more accurate. For example, in order to more accurately calculate the ability of the ionization device to eliminate electrostatic charges, a mathematical model that comprehensively considers factors is established. In this model, the de-electrification time, equilibrium voltage, temperature, humidity, etc. are used as variables, and the relationship and coefficients between the various variables are determined through the test data obtained by the detection device and theoretical analysis. When performing physical calculations, based on the data such as the de-electrification time, equilibrium voltage, ambient temperature and humidity obtained by actual measurements, the ionization device performance test results that are more in line with the actual situation are obtained.

[0038] Specifically, before the testing device performs a test on the ionization device, the temperature and humidity sensors measure the ambient temperature and humidity. When the ambient temperature and humidity meet preset values, the control module 500 controls the ionization device performance testing device to initiate a test. It can be understood that if the current test environment does not meet the test requirements, the performance test of the ionization device cannot be performed by the testing device, thereby avoiding inaccurate test results.

[0039] In one embodiment, reference Figure 5 The detection device also includes a display, which is connected to the control module 500 and is used to display the performance parameters of the ionization device under test and the ambient temperature and humidity measured by the above-mentioned temperature and humidity sensors. At the same time, it can display the complete voltage-time change curve after the test for staff to view.

[0040] In one embodiment, reference Figure 5 The detection device also includes at least one interface, wherein at least one interface is used to communicate with an external device to export ionization device performance test results or various data. Other interfaces can be used for upgrades, functional expansion, etc., without specific limitations.

[0041] In one embodiment, reference Figure 5The detection device also includes a power module to power the entire device. The power module primarily consists of a power adapter, a DC-DC charging circuit, a lithium battery, a first DC-DC converter, and a second DC-DC converter. The power adapter is connected to the input of the DC-DC charging circuit, while the output of the DC-DC charging circuit is connected to the lithium battery. The power adapter is an AC-to-DC power adapter that connects to an external mains or other AC power supply. It converts alternating current (AC) in the 100-250V range into 24V direct current (DC). The DC-DC charging circuit converts the adapter's DC output to the precise charging voltage required by the battery using a step-down (Buck) or step-up / step-up (Buck-Boost) topology, ensuring safe battery charging and longevity, while also ensuring the reliability of the detection device. The lithium battery is connected to the first and second DC-DC converters, respectively. The output of the first DC-DC converter is connected to the high-voltage generator 400, which the lithium battery supplies power to. The output of the second DC-DC converter is connected to the control module 500, which the lithium battery supplies power to. The first DCDC converter and the second DCDC converter both convert the lithium battery's supply voltage into the corresponding supply voltage for the high-voltage generator 400 and the control module 500. There are no restrictions on the specific lithium battery power supply size or the specific voltage conversion by the DCDC converter; the design can be selected based on testing requirements and the power supply requirements of each chip.

[0042] Based on the above implementation, refer to Figure 1-Figure 5 Another possible working process of the ionization equipment performance detection device of the present application is as follows: Before starting the test: The control module 500 obtains the test environment temperature and humidity through the temperature and humidity sensor, and determines whether the current environment temperature and humidity meet the detection requirements; After the test environment temperature and humidity requirements are met, the control module 500 controls the high voltage generator 400 to apply a preset constant high voltage to the capacitor 100 to detect whether the insulation between the two plates of the capacitor 100 meets the test requirements; Start detection: After the above test requirements are met, turn on the test device; The control module 500 controls the high voltage generator 400 to apply an initial voltage U0 (typically + / - 1000V) to the capacitor 100 ; receiving the ion flow generated by the ionization device under test through the detection plate 200; The current detection module 300 calculates the first current generated by the ion flow, wherein the first current generated at this time is the second current of the capacitor 100; The control module 500 reads the current from the current detection module 300 during the test and sets the sampling period. t; Calculate the average current flow I1 during the first sampling period on the detection plate 200 based on the read current; Calculate the sampling period based on the average current I1 The amount of charge reaching the detection plate 200 within t is Q1 = I1 t, and then the voltage change of the first detection plate 200 is obtained: U1= Q1 / C, where C is the capacitance of capacitor 100; Control the target voltage output by the high voltage generator 400 to the capacitor 100 in the next preset sampling period to U1 = U0 + U1, and record the voltage and time; After the above sampling and calculation process is repeated, the target voltage output by the high voltage generator 400 to the capacitor 100 corresponding to each sampling period can be obtained, thereby obtaining the plate voltage-time sequence (U i ,t i ); Result analysis: According to the voltage-time sequence (U i ,t i ), store data and draw voltage-time curve, refer to Figure 2 ; The voltage and time curve (U i ,t i ) Figure 1: Determine the performance parameters of the ionization device under test: The time corresponding to the first drop of voltage U(i) to the set voltage, such as + / -100V or the test time limit, is the de-energization time t 消电 ;(U i ,t i ) In the figure, after the de-energization time (t i >t 消电 The maximum absolute value of the voltage in the voltage-time curve of the equilibrium voltage U 平衡 (U 平衡 Not marked in the figure); The change curve, the de-electrification performance parameter results of the ionization device under test, and the ambient temperature and humidity corresponding to the test are displayed on the display to complete the test.

[0043] Based on the above embodiment, after the two plates of capacitor 100 are charged, the plates are not completely insulated because the bulk and surface resistances of the insulating support between the plates are not truly infinite (and the surface resistance is significantly affected by humidity and the cleanliness of the support surface). As a result, over time, even in an environment without ion wind, most of the charge on the charged plates leaks away (also causing the voltage of the metal parallel plate capacitor to drop). Therefore, when testing the charge removal performance of the ionization device, the voltage change of the metal parallel plate capacitor caused solely by ion wind cannot be accurately reflected. Based on this, the present application installs an equipotential detection plate 200 in front of the first plate 101 of the capacitor 100, uses a high-voltage generator 400 to adjust the voltage on the capacitor 100 and the detection plate 200, measures the current generated by the ion flow generated by the ionization device and reaching the detection plate 200 through the current detection module 300, and the control module control device calculates and adjusts the capacitor 100 and the detection plate 200. Since the first plate 101 and the detection plate 200 connected to the current detection module 300 are at the same potential and the voltage of the first plate 101 is controlled by the high-voltage generator 400, the influence of the plate voltage (charge) dissipation or attenuation caused by leakage of electricity through the insulating support between the first plate 101 and the second plate 102 on the test is effectively eliminated, making the test results more stable, accurate and reliable. Among them, the control module of the detection device mainly includes a memory and one or more processors. The memory can store the voltage and time corresponding to each of the above changes. The processor can be configured to execute various control and analysis functions in the detection device of this application, such as adjusting the voltage output by the high-voltage generator 400 according to the current control measured by the current detection module 300, and generating a voltage change curve over time according to the voltage value and corresponding time stored in the memory, and obtaining the performance parameters of the ionization device under test according to the change curve.

[0044] Furthermore, it should be understood that since the setting of each module is only for the purpose of illustrating the functional modules of the device of the present invention, the physical devices corresponding to these modules can be the processor itself, or a part of the software in the processor, a part of the hardware, or a part of the combination of software and hardware. Therefore, the number of each module in the figure is only schematic. It will be understood by those skilled in the art that the various modules in the system can be adaptively split or merged. Such splitting or merging of specific modules will not cause the technical solution to deviate from the principle of the present invention. Therefore, the technical solutions after splitting or merging will fall within the scope of protection of the present invention.

[0045] It should be understood that various parts of the present invention can be implemented using hardware, software, firmware, or a combination thereof. In the above-described embodiments, multiple steps or methods can be implemented using software or firmware stored in a memory and executed by a suitable instruction execution system. For example, if implemented using hardware, as in another embodiment, any one of the following technologies known in the art or a combination thereof can be used: a discrete logic circuit having a logic gate circuit for implementing a logic function on a data signal, an application-specific integrated circuit having a suitable combination of logic gate circuits, a programmable gate array (PGA), a field programmable gate array (FPGA), etc.

[0046] Throughout this specification, reference to terms such as "one embodiment," "some embodiments," "examples," "specific examples," or "some examples" means that a specific feature, structure, material, or characteristic described in conjunction with that embodiment or example is included in at least one embodiment or example of the present application. In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

[0047] Although the embodiments of the present application have been shown and described above, it can be understood that the above embodiments are exemplary and cannot be understood as limitations on the present application. Ordinary technicians in this field can change, modify, and replace the above embodiments within the scope of the present application.

Claims

1. An ionization equipment performance detection device, characterized in that: include: A capacitor comprising a first plate and a second plate arranged in parallel; a detection plate connected in series with the first electrode plate and having the same potential as the first electrode plate, the detection plate being used to receive the ion flow generated by the ionization device being tested; a current detection module, connected to the first electrode plate and the detection plate, respectively, the current detection module being configured to measure a first current generated by the ion flow received by the detection plate and to determine a second current corresponding to the capacitor based on the first current; a high-voltage generator, one end of which is connected to the first electrode plate, and the other end of which is grounded together with the second electrode plate, the high-voltage generator being used to provide voltage to the capacitor; A control module is connected to the current detection module and the high voltage generator respectively, and the control module is configured to: Calculating the average current in the current preset sampling period according to the second current measured by the current detection module; Calculating a voltage change value of the capacitor corresponding to the current preset sampling period based on the average current in the current preset sampling period, the duration of the preset sampling period, and the capacitance of the capacitor; calculating a target voltage that the high voltage generator needs to provide to the capacitor in a next preset sampling period based on the voltage change value corresponding to the current preset sampling period and the current voltage provided to the capacitor by the high voltage generator in the current preset sampling period, and controlling the high voltage generator to output the target voltage in the next preset sampling period; Multiple sampling cycles are cycled, and a voltage variation curve is generated based on the voltage output by the high-voltage generator to the capacitor in each preset sampling cycle and the preset sampling cycle, and the performance parameters of the ionization device under test are determined according to the voltage variation curve.

2. The ionization equipment performance detection device according to claim 1, characterized in that: The control module is configured to: Calculating the amount of charge arriving at the detection plate during the current preset sampling period based on the average current during the current preset sampling period and the duration of the preset sampling period; Calculating a voltage change value of the detection plate corresponding to the current preset sampling period according to the amount of charge reaching the detection plate during the current preset sampling period and the capacitance of the capacitor; The control module is further configured to: The target voltage that the high voltage generator needs to provide to the capacitor in the next preset sampling period is calculated based on the difference between the current voltage provided by the high voltage generator to the capacitor in the current preset sampling period and the voltage change value of the detection plate corresponding to the current preset sampling period.

3. The ionization equipment performance detection device according to claim 1, characterized in that: The control module is configured to: Obtaining the de-energization time of the ionization device under test based on the time corresponding to the first drop of the voltage to the preset attenuation voltage value in the voltage variation curve over time; The equilibrium voltage of the ionization device under test is obtained based on the maximum absolute value of the voltage in the curve portion after the de-energization time in the curve of the voltage variation with time.

4. The ionization equipment performance detection device according to claim 1, characterized in that: A first insulating support member is provided between the first electrode plate and the second electrode plate; A second insulating support is provided on a side of the first electrode plate away from the second electrode plate; the detection plate is provided on the second insulating support; The first electrode plate, the second electrode plate and the detection plate have the same size; The first electrode plate, the second electrode plate and the detection plate have rough surfaces or are all coated with thin films.

5. The ionization equipment performance detection device according to claim 4, characterized in that: The first insulating support member is columnar, and the area of ​​a cross section of the first insulating support member perpendicular to the axial direction is smaller than the area of ​​the first electrode plate; The second insulating support member is plate-shaped, and the area of ​​the second insulating support member is the same as the area of ​​the detection plate; The second insulating support member is provided with a mounting portion protruding from the surface, and the mounting portion is arranged relative to the detection plate; The mounting portion is disposed close to and around an edge of the second insulating support member.

6. The ionization equipment performance detection device according to claim 1, characterized in that: The current detection module includes a sampling resistor, an operational amplifier and an ADC analog-to-digital converter connected in sequence; the sampling resistor is connected to the detection plate and the first electrode plate, and the ADC analog-to-digital converter is connected to the control module.

7. The ionization equipment performance detection device according to claim 1, characterized in that: The high voltage generator is further used to apply a preset detection voltage to the first electrode plate before the device detects the ionization device under test; The current detection module is further used to measure the current value on the first electrode plate under the preset voltage; The control module is further configured to determine whether the insulation between the first electrode plate and the second electrode plate meets detection requirements based on the current value on the first electrode plate, and to control the ionization equipment performance detection device to start a detection function if it is determined that the detection requirements are met.

8. The ionization equipment performance detection device according to claim 1, characterized in that: The device further includes a temperature and humidity sensor connected to the control module; The control module is further configured to obtain, through the temperature and humidity sensor, the ambient temperature and humidity corresponding to each performance parameter test result of the ionization device being tested; and / or, The control module is further configured to correct the performance parameters of the ionization device under test according to the ambient temperature and humidity measured by the temperature and humidity sensor; and / or, The control module is further configured to control the ionization device performance detection device to start a detection function when the ambient temperature and humidity measured by the temperature and humidity sensor meet preset values.

9. The ionization equipment performance detection device according to claim 8, characterized in that: The device further comprises a display connected to the control module; the display is used to display the performance parameters of the ionization device being measured and the ambient temperature and humidity measured by the temperature and humidity sensor.

10. The ionization equipment performance detection device according to claim 8, characterized in that: The capacitance value of the capacitor is 20 pF±2 pF.

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