Conductive slip ring deep charging monitoring and suppression device and method

Abstract

The invention provides a conductive slip ring deep charging monitoring and suppression device and method. The device comprises a monitoring suppression unit and a control unit. The monitoring suppression unit comprises a charge module for obtaining a first monitoring signal and transmitting the first monitoring signal to the control unit; the temperature unit is used for obtaining a second monitoring signal, transmitting the second monitoring signal to the control unit and heating a second position according to a final feedback signal; the control unit is used for transmitting a control signal and a final feedback signal to the monitoring suppression unit, obtaining charge distribution information of a first position according to the first monitoring signal, and obtaining intermediate feedback information according to an electric field intensity threshold. The feedback module is used for obtaining the current temperature of the second position according to the second monitoring signal and obtaining a final feedback signal according to the intermediate feedback information and the temperature threshold. The conductive slip ring deep charging monitoring and inhibiting device and method provided by the invention can actively inhibit deep charging, reduce the risk of deep discharging, and realize small size, light weight and low installation difficulty.

Description

Technical Field

[0001] The present invention relates to the field of spacecraft electrical connection insulation technology, and in particular to a conductive slip ring deep charging monitoring and suppression device and method. Background Art

[0002] The energy acquisition of satellites mainly depends on their solar panels. In order to ensure that the panels can track the sun in real time, the conductive slip ring drive mechanism plays a key role, which enables the panels to absorb solar energy with the highest efficiency. However, since the conductive slip ring mechanism is directly exposed to space, when encountering the enhanced phenomenon of high-energy electron flow, these electrons can penetrate the aluminum shielding layer and deposit on the insulating baffle and copper rail. Since the insulating baffle is made of polyimide material, which has poor conductivity, the accumulated electrons will produce electric field distortion in the insulating layer. Once this distortion exceeds the discharge threshold, it will trigger electrostatic discharge, which will cause deep discharge phenomenon, posing a serious threat to the stable operation of the spacecraft and becoming one of the potential failure points of the satellite.

[0003] At present, the monitoring methods for the deep charging effect of conductive slip rings at home and abroad are mainly concentrated on the measurement of dielectric surface potential, the measurement of dielectric space charge distribution by PEA electroacoustic pulse method, and the measurement of space charge by optoelectronics. Although the dielectric surface potential measurement can measure the surface potential of the insulating baffle of the conductive slip ring, and thus infer the deep charging effect, it is subject to the overall structure of the slip ring. The potential at the "three-in-one" point of the insulating medium, electrode and insulating baffle where the electric field distortion caused by the deep charging effect is the most serious cannot be directly measured, and the detection error is large. Although the PEA acoustic and electrical measurement method is low in cost and relatively mature, its measurement resolution is low and the measurement itself has a low signal-to-noise ratio. At the same time, in the extreme environment of space, the ultra-low temperature measurement results of PEA are not ideal. The optoelectronic measurement of space charge has a high signal-to-noise ratio and can adapt to a variety of environments, but the optoelectronic measurement requires the addition of target materials on the upper part of the insulating baffle. At present, the target materials selected for optoelectronic measurement at home and abroad are ink and aluminum. The application of PEA to conductive slip rings will increase the risk of surface flashover of the insulating baffle. The means of suppressing the deep charging effect of conductive slip rings at home and abroad mainly focus on thickening the aluminum shielding layer, adjusting the conductive slip ring structure and replacing the insulating material. Although thickening the aluminum shielding layer can reduce deep charging, it is limited by the weight limit of the spacecraft, and studies have shown that even if the thickness of the aluminum layer is increased to 3 mm, the discharge threshold may still be reached. Reducing the height of the insulating baffle can reduce the electric field strength to a certain extent, but it may also shorten the creepage distance and increase the risk of discharge. Replacing insulating materials also has limitations, and the introduction of new materials may bring new unknown risks. These methods are all passive suppression measures, and after the high-energy electron flow ends, the electric field distortion will continue for a period of time. In view of this, how to monitor the deep charging effect of the conductive slip ring and more effectively suppress the deep charging phenomenon to ensure the safe operation of the spacecraft has become an urgent problem to be solved. Summary of the invention

[0004] In view of the problems existing in the prior art, the present invention provides a conductive slip ring deep charging monitoring and suppression device and method, which can actively suppress deep charging, reduce the risk of deep discharge, and has small size, light weight, and low installation difficulty. The present invention aims to solve the problems existing in the prior art and to obtain the charge distribution information of the insulating baffle through a charge module and the current temperature of the insulating baffle through a temperature module. The control unit calculates and compares the final feedback information with a preset threshold value, and transmits the final feedback information to the temperature module to heat the insulating baffle, so as to improve the conductivity of the insulating baffle and accelerate the release of deposited electrons, thereby suppressing deep charging. The device and method can actively suppress deep charging, reduce the risk of deep discharge, and has a small size, light weight, and low installation difficulty.

[0005] To achieve the above-mentioned object, the technical solution adopted by the present invention is as follows: a conductive slip ring deep charging monitoring and suppression device, comprising a monitoring and suppression unit and a control unit; The monitoring and suppression unit includes a plurality of charge modules and a plurality of temperature modules; The charge module is used to obtain a first monitoring signal of a first position on the insulating baffle according to a first control signal, and to transmit the first monitoring signal to the control unit; each of the charge modules corresponds to one of the first positions; The temperature module is used to obtain a second monitoring signal of a second position on the insulating baffle according to a second control signal, to transmit the second monitoring signal to the control unit, and to heat the second position according to a final feedback signal of the control unit; each of the temperature modules corresponds to one second position; The control unit: Used for power supply; used for presetting operating parameters, electric field strength thresholds and temperature thresholds; for transmitting the first control signal to the charge module according to the preset operating parameters, and for transmitting the second control signal to the temperature module; Used to receive the first monitoring signal and obtain the charge distribution information of the first position according to the first monitoring signal; Used to obtain intermediate feedback information according to the electric field strength threshold and the charge distribution information of the first position; Used to receive the second monitoring signal, and obtain the current temperature of the second position according to the second monitoring signal; for obtaining the final feedback signal according to the intermediate feedback information, the current temperature of the second position and the temperature threshold; and for transmitting the final feedback signal to the temperature module.

[0006] Further, the charge module includes a first piezoelectric ceramic and a second piezoelectric ceramic; When in use, the first piezoelectric ceramic is arranged on the outer surface of the first position, and the second piezoelectric ceramic is arranged on the inner surface of the first position; The first piezoelectric ceramic and the second piezoelectric ceramic are respectively connected to the control unit; The second piezoelectric ceramic is used to transmit a piezoelectric pressure wave pulse signal to the first position according to the first control signal, and the first position is the insulating baffle between the first piezoelectric ceramic and the second piezoelectric ceramic; The piezoelectric pressure wave pulse signal is transmitted through the first position and then received by the first piezoelectric ceramic to form the first monitoring signal. The first monitoring signal is transmitted to the control unit by the first piezoelectric ceramic.

[0007] Furthermore, the temperature module comprises: The sound insulation layer is open at one end and is in the shape of a shell; a third piezoelectric ceramic, which is sealed and arranged at the open end of the sound insulation layer, the third piezoelectric ceramic and the sound insulation layer form a closed cavity, and the third piezoelectric ceramic is connected to the control unit; A damping layer is sealed and filled in the closed cavity; and an acoustic impedance conversion layer, which is laid on the outer surface of the third piezoelectric ceramic and is used to connect to the inner surface of the second position when in use; The third piezoelectric ceramic is used to transmit a first ultrasonic signal to the acoustic impedance conversion layer according to the second control signal, and the reflected wave of the first ultrasonic signal after passing through the inner surface of the second position is received by the third piezoelectric ceramic to form the second monitoring signal, and the second monitoring signal is transmitted to the control unit by the third piezoelectric ceramic; the third piezoelectric ceramic is used to transmit a second ultrasonic signal to the acoustic impedance conversion layer according to the final feedback signal, and the second ultrasonic signal is used to heat the second position.

[0008] Furthermore, the temperature module also includes a power interface and a signal interface; The signal interface is used to receive the second control signal and transmit it to the third piezoelectric ceramic, and is used to transmit the second monitoring signal to the control unit; The power interface is used to receive the final feedback signal and transmit it to the third piezoelectric ceramic.

[0009] Furthermore, the charge module and the temperature module are arranged at intervals.

[0010] Furthermore, several of the temperature modules are independently controlled by the control unit.

[0011] Furthermore, the control unit includes a power supply module, a signal processing module and a temperature control module; The signal processing module: Used to preset the electric field strength threshold; Used to receive the first monitoring signal; Used to obtain charge distribution information of the first position according to the first monitoring signal; Used to obtain an intermediate feedback signal according to the electric field strength threshold and the charge distribution information of the first position; for transmitting the intermediate feedback signal to the temperature control module; Used to receive the second monitoring signal and obtain the current temperature of the second position according to the second monitoring signal; for transmitting the current temperature of the second position to the temperature control module; The temperature control module: Used to preset the temperature threshold; Used to receive the intermediate feedback signal; for receiving the current temperature according to the second position; for obtaining a heating temperature at the second position according to the intermediate feedback signal, the current temperature at the second position and the temperature threshold; for transmitting the heating temperature of the second position to the power module; The power module: Used for power supply, the power supply module is respectively connected with the signal processing module, the temperature control module and the monitoring and suppression unit; Used to preset the operating parameters; for transmitting the first control signal to the charge module according to the operating parameter, and for transmitting the second control signal to the temperature module; for receiving the heating temperature of the second position, and obtaining the final feedback signal according to the heating temperature of the second position; Used to transmit the final feedback signal to the temperature module.

[0012] A method for monitoring and suppressing deep charge of a conductive slip ring is implemented by using the conductive slip ring deep charge monitoring and suppressing device, comprising the following steps: Acquiring the operating parameters, the electric field strength threshold, and the temperature threshold and inputting them into the control unit; The control unit transmits the first control signal to the charge module according to the operating parameter, and the control unit transmits the second control signal to the temperature module according to the operating parameter; The charge module acquires a first monitoring signal of the first position on the insulating baffle according to the first control signal, and transmits the first monitoring signal to the control unit; The temperature module obtains a second monitoring signal of the second position on the insulating baffle according to the second control signal, and transmits the second monitoring signal to the control unit; The control unit receives the first monitoring signal and obtains the charge distribution information of the first position according to the first monitoring signal; The control unit obtains an intermediate feedback signal according to the electric field intensity threshold and the charge distribution information of the first position; The control unit receives the second monitoring signal, and obtains the current temperature of the second position according to the second monitoring signal; The control unit obtains the final feedback signal according to the intermediate feedback signal, the current temperature of the second position and the temperature threshold; The control unit transmits the final feedback signal to the temperature module; The temperature module heats the second location according to the final feedback signal.

[0013] Furthermore, the step of obtaining the final feedback signal is: Obtaining the maximum electric field intensity at the first position according to the charge distribution information at the first position; Compare the maximum electric field strength at the first position with the electric field strength threshold: If the maximum electric field strength at the first position does not exceed the electric field strength threshold, the feedback information is a negative signal; otherwise the intermediate feedback signal includes an affirmative signal and the maximum electric field strength of the first position; Based on the affirmative signal, obtaining a heating temperature of the second position according to a current temperature of the second position, the temperature threshold, and a maximum electric field strength of the first position; The final feedback signal is obtained according to the heating temperature of the second position.

[0014] Furthermore, the sampling interval of the first control signal is 1 to 2 hours; When the temperature module does not receive the final feedback signal, the sampling interval of the second control signal is 1-2 hours; When the temperature module receives the final feedback signal, the sampling interval of the second control signal is 15 to 30 minutes.

[0015] Compared with the prior art, the present invention has the following beneficial effects: 1. The present invention obtains the charge distribution information of the insulating baffle through the charge module and the current temperature of the insulating baffle through the temperature module. The control unit calculates and compares the information with the preset threshold to obtain the final feedback information, which is then transmitted to the temperature module to heat the insulating baffle, thereby increasing the conductivity of the insulating baffle and accelerating the release of deposited electrons, thereby suppressing deep charging. 2. The temperature module in the present invention integrates temperature measurement and heating functions, and has uniform heating, precise temperature control, and streamlined equipment. It is a means of actively suppressing deep charging in conjunction with the charge module and control unit, which can greatly reduce the risk of deep discharge; 3. The control unit in the present invention is integrated with power electronic devices, and the monitoring and suppression unit can also be realized by a small probe, so as to achieve small size and light weight, and reduce the overall installation difficulty. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of the present invention; Figure 2 It is a schematic diagram of the installation position of the monitoring and suppression unit on the conductive slip ring in the present invention; Figure 3 It is a structural schematic diagram of the temperature module in the present invention; Figure 4 It is a schematic diagram of the principle of the method for monitoring and suppressing deep charging of a conductive slip ring in the present invention.

[0017] Among them, the figure markings are: 1. conductive slip ring; 11. insulating baffle; 12. copper slide; 13. cavity; 2. monitoring and suppression unit; 21. charge module; 211. first piezoelectric ceramic; 212. second piezoelectric ceramic; 22. temperature module; 221. acoustic impedance conversion layer; 222. third piezoelectric ceramic; 223. sound insulation layer; 224. damping layer; 225. power interface; 226. signal interface; 3. control unit; 31. power module; 32. signal processing module; 33. temperature control module. DETAILED DESCRIPTION

[0018] It is worth noting that the methods used in the present invention are all conventional methods unless otherwise specified; the raw materials and devices used are all conventional commercially available products, and their sources are not specifically limited unless otherwise specified.

[0019] A conductive slip ring deep charging monitoring and suppression device, comprising a monitoring and suppression unit 2 and a control unit 3; The monitoring and suppression unit 2 includes a plurality of charge modules 21 and a plurality of temperature modules 22; The charge module 21 is used to obtain a first monitoring signal of a first position on the insulating baffle 11 according to a first control signal, and to transmit the first monitoring signal to the control unit 3; each charge module 21 corresponds to a first position, and the first position is where the charge module 21 is installed on the insulating baffle 11; the deep charging effect of the first position on the insulating baffle 11 is monitored by the charge module 21; The temperature module 22 is used to obtain a second monitoring signal of a second position on the insulating baffle 11 according to the second control signal, to transmit the second monitoring signal to the control unit 3, and to heat the second position according to the final feedback signal of the control unit 3; each temperature module 22 corresponds to a second position, and the second position is the installation position of the temperature module 22 on the insulating baffle 11; The charge module 21 and the temperature module 22 are arranged at intervals; several temperature modules 22 are independently controlled by the control unit 3, and the temperature modules 22 within a preset distance interval around the charge module 21 are associated with the charge module 21. The preset distance interval includes at least one temperature module 22, that is, each charge module 21 corresponds to a first position, each temperature module 22 corresponds to a second position, and the first position is associated with at least one second position.

[0020] See also Figure 1 , 2 The conductive slip ring 1 comprises an insulating baffle 11 and a conductive slip ring 12. The insulating baffle 11 is in a hollow cylindrical shape, and a cavity 13 is arranged in the insulating baffle 11. Grooves are provided on the outer surfaces of both axial ends of the insulating baffle 11, and the conductive slip ring 12 is installed in the grooves. The grooves are in a circular ring shape, and the axial outer end surface of the insulating baffle 11 is in a circular ring protrusion. The first position and the second position are both arranged at the circular ring protrusion. Charge modules 21 are uniformly arranged along the circumference on each circular ring protrusion. Temperature modules 22 are arranged around the charge modules 21 within a preset distance interval, that is, each charge module 21 corresponds to a temperature module 22 within a preset distance interval around it, and the same temperature module 22 corresponds to at least one charge module 21. When the deep charging effect at the first position exceeds the electric field strength threshold, the temperature module 22 associated with the charge module 21 at the first position heats the corresponding second position according to the feedback signal, so that the first position is uniformly heated as a whole, so as to improve the conductivity of the insulating baffle 11 and realize the precise and rapid increase of the temperature of the insulating baffle 11.

[0021] Control Unit 3: Used for power supply; used for presetting operating parameters, electric field strength threshold and temperature threshold, where the electric field strength threshold and temperature threshold are both preset thresholds; Used to transmit a first control signal to the charge module 21 according to preset operating parameters, and used to transmit a second control signal to the temperature module 22; the first control signal and the second control signal are both control signals; Used to receive a first monitoring signal and obtain charge distribution information at a first position according to the first monitoring signal; Used to obtain intermediate feedback information according to the electric field intensity threshold and the charge distribution information at the first position; Used to receive a second monitoring signal and obtain a current temperature of a second position according to the second monitoring signal; for obtaining a final feedback signal according to the intermediate feedback information, the current temperature of the second position and a temperature threshold; And used to transmit the final feedback signal to the temperature module 22.

[0022] First, the operating parameters, electric field strength threshold and temperature threshold are preset in the control unit 3. The operating parameters include the sampling frequency, voltage and other parameters of the first control signal and the second control signal. During actual operation, the control unit 3 transmits the first control signal to the charge module 21 and the second control signal to the temperature module 22 according to the operating parameters. The charge module 21 obtains the first monitoring signal of the first position on the insulating baffle 11 according to the first control signal, and transmits the first monitoring signal to the control unit 3. The temperature module 22 obtains the second monitoring signal of the second position on the insulating baffle 11 according to the second control signal, and transmits the second monitoring signal to the control unit 3; the control unit 3 receives the first monitoring signal and obtains the charge distribution information of the first position according to the first monitoring signal; the control unit 3 obtains the intermediate feedback signal according to the electric field strength threshold and the charge distribution information of the first position, that is, obtains the maximum electric field at the first position according to the charge distribution information of the first position. Intensity, compare the maximum electric field intensity at the first position with the electric field intensity threshold: if the maximum electric field intensity at the first position does not exceed the electric field intensity threshold, that is, the deep charging effect at the first position does not exceed the electric field intensity threshold, then the feedback information is a negative signal; if not, that is, the deep charging effect at the first position exceeds the electric field intensity threshold, then the intermediate feedback signal includes an affirmative signal and the maximum electric field intensity of the first position; the control unit 3 receives the second monitoring signal, and obtains the current temperature of the second position according to the second monitoring signal; the control unit 3 obtains the final feedback signal according to the intermediate feedback signal, the current temperature of the second position and the temperature threshold, that is, based on the affirmative signal, the final feedback signal is obtained according to the current temperature of the second position, the temperature threshold and the maximum electric field intensity of the first position, and the final feedback signal is obtained according to the heating temperature of the second position; the control unit 3 transmits the final feedback signal to the temperature module 22; the temperature module 22 heats the second position according to the final feedback signal.

[0023] When the charge distribution information of the first position is compared with the electric field strength threshold to generate a negative signal, there is no need to heat the second position associated with the first position; When the charge distribution information of the first position is compared with the electric field strength threshold to generate a positive signal, the second position associated with the first position is heated according to the final feedback signal. When the deep charging effect of the first position reaches the preset electric field strength threshold, the temperature module 22 heats the second position associated with the first position to uniformly heat the area around the first position, thereby increasing the conductivity of the first position of the insulating baffle 11 and accelerating the release of deposited electrons, thereby suppressing deep charging.

[0024] The charge module 21 includes a first piezoelectric ceramic 211 and a second piezoelectric ceramic 212; When in use, the first piezoelectric ceramic 211 is arranged on the outer surface of the first position, and the second piezoelectric ceramic 212 is arranged on the inner surface of the first position, which is used to monitor the charge distribution at the first position in the insulating baffle 11, has a higher resolution in the three-dimensional charge measurement, and can better monitor the deep charging of the conductive slip ring; under low temperature conditions, the piezoelectric pressure wave measurement effect is good, and it is adapted to the extreme environment of space. Preferably, the charge module 21 measures the charge distribution at the first position based on the piezoelectric pressure wave (PIPWP) method, and the power supply module 31 in the control module 3 generates a series of high-speed square wave electric pulses according to the operating parameters to drive the second piezoelectric ceramic 212, so that the second piezoelectric ceramic 212 generates a piezoelectric pressure wave pulse signal to act on the first position, causing the space charge in the insulating baffle 11 at the first position to produce a small displacement, thereby causing the induced charge of the first piezoelectric ceramic 211 to change, that is, to form a first monitoring signal; The first piezoelectric ceramic 211 and the second piezoelectric ceramic 212 are respectively connected to the control unit 3; The second piezoelectric ceramic 212 is used to transmit a piezoelectric pressure wave pulse signal to a first position according to a first control signal. The first position is the insulating baffle 11 between the first piezoelectric ceramic 211 and the second piezoelectric ceramic 212. The second piezoelectric ceramic 212 is used as a transmitting source of the piezoelectric pressure wave pulse signal. Under the action of the first control signal, the second piezoelectric ceramic 212 generates a piezoelectric pressure wave pulse signal and injects it into the measured medium, i.e., the first position. After the piezoelectric pressure wave pulse signal propagates through the first position, it is received by the first piezoelectric ceramic 211 to form a first monitoring signal. The first monitoring signal is transmitted from the first piezoelectric ceramic 211 to the control unit 3. The first piezoelectric ceramic 211 is the receiving end of the piezoelectric pressure wave pulse signal. It captures the signal change after propagating through the measured medium at the first position, that is, forms the first monitoring signal, and transmits it back to the control unit 3. The control unit 3 calculates the charge distribution information at the first position.

[0025] In addition, the charge module 21 may also be a capacitive sensor or a potential probe, which is a prior art and will not be described in detail herein.

[0026] See also Figure 3, the temperature module 2 is an electroacoustic transducer, and the temperature module 22 includes: The sound insulation layer 223 has an opening at one end and is in a shell shape, and is used to absorb and isolate external sound waves, reduce signal interference, and protect the third piezoelectric ceramic 222. Preferably, the sound insulation layer 223 is made of rubber; The third piezoelectric ceramic 222 is sealed and arranged at the open end of the sound insulation layer 223. The third piezoelectric ceramic 222 and the sound insulation layer 223 form a closed cavity. The third piezoelectric ceramic 222 is connected to the control unit 3. The damping layer 224 is sealed and filled in the sealed cavity. The damping layer 224 is made of a mixed material such as epoxy resin and tungsten powder, and is used to absorb the ultrasonic wave on the back of the third piezoelectric ceramic 222 to reduce noise. and an acoustic impedance conversion layer 221, which is laid on the outer surface of the third piezoelectric ceramic 222 and is used to connect the inner surface of the second position when in use. Preferably, the acoustic impedance conversion layer 221 is made of open-cell polyurethane foam to reduce reflection and scattering of sound waves and improve the efficiency of sound wave transmission; The third piezoelectric ceramic 222 is used to transmit a first ultrasonic signal to the acoustic impedance conversion layer 221 according to the second control signal. The reflected wave of the first ultrasonic signal after passing through the inner surface of the second position is received by the third piezoelectric ceramic 222 to form a second monitoring signal. The second monitoring signal formed by the first ultrasonic signal is used to obtain the real-time temperature of the second position. The second monitoring signal is transmitted to the control unit 3 by the third piezoelectric ceramic 222. The third piezoelectric ceramic 222 is used to transmit a second ultrasonic signal to the acoustic impedance conversion layer 221 according to the final feedback signal. The second ultrasonic signal is used to heat the second position. Ultrasonic heating is used to ensure uniform heating and rapid temperature increase.

[0027] The most direct effect of the second ultrasonic signal is to ultrasonically heat the second position. The reduced acoustic energy of the second ultrasonic signal due to absorption at the second position is converted into heat and retained at the second position of the insulating baffle 11 to transfer heat in the insulating baffle 11 to achieve temperature increase. The temperature increase rate of the insulating baffle 11 at the second position is expressed by formula 1, which is: In the formula, is the rate of temperature increase, is the sound absorption coefficient, which is a function of the sound wave frequency f (MHz) and can be approximately expressed as , is the second ultrasonic intensity measured at the second position, in units of , is the average density of the measured medium (at the second position of the insulating baffle), in units of , is the specific heat capacity of the measured medium (at the second position of the insulating baffle) under a certain pressure, in units of ℃; According to the Arrhenius conductivity-temperature model, the relationship between the conductivity and temperature of polyimide is expressed as Formula 2, which is: In the formula, is the temperature, is the Boltzmann constant, is the activation energy of the measured medium (at the second position of the insulating baffle), It is a constant related to the measured medium (at the second position of the insulating baffle).

[0028] According to the above formulas 1 and 2, when the temperature of the insulating baffle increases in the range of 0 to 80°C, the conductivity increases by two orders of magnitude at most, and the corresponding maximum electric field distortion degree of the conductive slip ring under high-energy electron radiation will also decrease by two orders of magnitude. Therefore, the maximum value of the temperature increase of the insulating baffle 11 after heating by the temperature module 22 is set to 80°C, that is, the preset value of the temperature threshold is 80°C.

[0029] In addition, the temperature module 22 can also be a thermocouple temperature measurement and heating integrated device or an optical temperature measurement and heating integrated device, which is the prior art and will not be described in detail here.

[0030] The temperature module 22 also includes a power interface 225 and a signal interface 226; The signal interface 226 is used to receive the second control signal and transmit it to the third piezoelectric ceramic 222, and to transmit the second monitoring signal to the control unit 3; The power interface 225 is used to receive the final feedback signal and transmit it to the third piezoelectric ceramic 222 .

[0031] The control unit 3 includes a power supply module 31, a signal processing module 32 and a temperature control module 33; Signal processing module 32: Used to preset the electric field strength threshold; Used to receive a first monitoring signal; Used to obtain charge distribution information at a first position according to a first monitoring signal; Used to obtain an intermediate feedback signal according to the electric field intensity threshold and the charge distribution information at the first position; Used to transmit the intermediate feedback signal to the temperature control module 31; Used to receive a second monitoring signal and obtain a current temperature of a second position according to the second monitoring signal; for transmitting the current temperature of the second position to the temperature control module 33; Temperature control module 33: Used to preset temperature thresholds; Used to receive the intermediate feedback signal; for receiving a current temperature according to a second location; for obtaining a heating temperature at the second position according to the intermediate feedback signal, the current temperature at the second position and a temperature threshold; for transmitting the heating temperature of the second position to the power module 31; Power module 31: For power supply, the power supply module 31 is respectively connected with the signal processing module 32, the temperature control module 33 and the monitoring and suppression unit 2; Used to preset operating parameters; for transmitting a first control signal to the charge module 21 according to the operating parameters, and for transmitting a second control signal to the temperature module 22; Used to receive the heating temperature of the second position, and obtain a final feedback signal according to the heating temperature of the second position; It is used to transmit the final feedback signal to the temperature module 22 .

[0032] The power module 31, the signal processing module 32 and the temperature control module 33 are integrated together using power electronic devices to achieve small size and light weight, thereby reducing the overall installation difficulty.

[0033] Preferably, the power module 31 is connected to the solar panels.

[0034] A method for monitoring and suppressing deep charge of a conductive slip ring is implemented by using a device for monitoring and suppressing deep charge of a conductive slip ring, and comprises the following steps: Obtaining operating parameters, electric field strength threshold and temperature threshold and inputting them into the control unit 3; The control unit 3 transmits a first control signal to the charge module 21 according to the operating parameters, and the control unit 3 transmits a second control signal to the temperature module 22 according to the operating parameters; The charge module 21 obtains a first monitoring signal of a first position on the insulating baffle 11 according to the first control signal, and transmits the first monitoring signal to the control unit 3; The temperature module 22 obtains a second monitoring signal of a second position on the insulating baffle 11 according to the second control signal, and transmits the second monitoring signal to the control unit 3; The control unit 3 receives the first monitoring signal and obtains the charge distribution information of the first position according to the first monitoring signal; The control unit 3 obtains an intermediate feedback signal according to the electric field intensity threshold and the charge distribution information at the first position; The control unit 3 receives the second monitoring signal and obtains the current temperature of the second position according to the second monitoring signal; The control unit 3 obtains a final feedback signal according to the intermediate feedback signal, the current temperature of the second position and the temperature threshold; The control unit 3 transmits the final feedback signal to the temperature module 22; The temperature module 22 heats the second location according to the final feedback signal.

[0035] Furthermore, the steps of obtaining the final feedback signal are: Obtaining the maximum electric field intensity at the first position according to the charge distribution information at the first position; Compare the maximum electric field strength at the first position with the electric field strength threshold: If the maximum electric field strength at the first position does not exceed the electric field strength threshold, the feedback information is a negative signal; otherwise the intermediate feedback signal includes an affirmative signal and the maximum electric field strength at the first position; Based on the affirmative signal, a final feedback signal is obtained according to the current temperature of the second position, the temperature threshold and the maximum electric field strength of the first position. The final feedback signal is the heating temperature of the second position. The required power is transmitted from the power module 31 to the temperature module 22 according to the final feedback signal.

[0036] Further, the sampling interval of the first control signal is 1 to 2 hours, preferably 1 hour; When the temperature module 22 does not receive the final feedback signal, the sampling interval of the second control signal is 1 to 2 hours, preferably 1 hour; When the temperature module 22 receives the final feedback signal, the sampling interval of the second control signal is 15-30 minutes, preferably 15 minutes, and the power transmitted to the temperature module 22 is adjusted in real time to accurately control the temperature of the insulating baffle, thereby greatly reducing the risk of deep discharge.

[0037] Finally, it should be noted that the above content is only used to illustrate the technical solution of the present invention, rather than to limit the scope of protection of the present invention. Simple modifications or equivalent substitutions of the technical solution of the present invention by ordinary technicians in this field do not deviate from the essence and scope of the technical solution of the present invention.

Claims

1. A conductive slip ring deep charging monitoring and suppression device, characterized in that: It includes a monitoring and suppression unit and a control unit; The monitoring and suppression unit includes a plurality of charge modules and a plurality of temperature modules; The charge module is used to obtain a first monitoring signal of a first position on the insulating baffle according to a first control signal, and to transmit the first monitoring signal to the control unit; each of the charge modules corresponds to one of the first positions; The temperature module is used to obtain a second monitoring signal of a second position on the insulating baffle according to a second control signal, to transmit the second monitoring signal to the control unit, and to heat the second position according to a final feedback signal of the control unit; each of the temperature modules corresponds to one second position; The control unit: For power supply; Used to preset operating parameters, electric field strength thresholds and temperature thresholds; for transmitting the first control signal to the charge module according to the preset operating parameters, and for transmitting the second control signal to the temperature module; Used to receive the first monitoring signal and obtain the charge distribution information of the first position according to the first monitoring signal; Used to obtain intermediate feedback information according to the electric field intensity threshold and the charge distribution information of the first position; Used to receive the second monitoring signal, and obtain the current temperature of the second position according to the second monitoring signal; for obtaining the final feedback signal according to the intermediate feedback information, the current temperature of the second position and the temperature threshold; and for transmitting the final feedback signal to the temperature module.

2. The conductive slip ring deep charging monitoring and suppression device according to claim 1 is characterized in that: The charge module includes a first piezoelectric ceramic and a second piezoelectric ceramic; When in use, the first piezoelectric ceramic is arranged on the outer surface of the first position, and the second piezoelectric ceramic is arranged on the inner surface of the first position; The first piezoelectric ceramic and the second piezoelectric ceramic are respectively connected to the control unit; The second piezoelectric ceramic is used to transmit a piezoelectric pressure wave pulse signal to the first position according to the first control signal, and the first position is the insulating baffle between the first piezoelectric ceramic and the second piezoelectric ceramic; The piezoelectric pressure wave pulse signal is transmitted through the first position and then received by the first piezoelectric ceramic to form the first monitoring signal. The first monitoring signal is transmitted to the control unit by the first piezoelectric ceramic.

3. The conductive slip ring deep charging monitoring and suppression device according to claim 1 is characterized in that: The temperature module comprises: The sound insulation layer is open at one end and is in the shape of a shell; A third piezoelectric ceramic is sealed and arranged at the open end of the sound insulation layer, the third piezoelectric ceramic and the sound insulation layer form a closed cavity, and the third piezoelectric ceramic is connected to the control unit; A damping layer is sealed and filled in the closed cavity; and an acoustic impedance conversion layer, which is laid on the outer surface of the third piezoelectric ceramic and is used to connect to the inner surface of the second position when in use; The third piezoelectric ceramic is used to transmit a first ultrasonic signal to the acoustic impedance conversion layer according to the second control signal, and the reflected wave of the first ultrasonic signal after passing through the inner surface of the second position is received by the third piezoelectric ceramic to form the second monitoring signal, and the second monitoring signal is transmitted to the control unit by the third piezoelectric ceramic; the third piezoelectric ceramic is used to transmit a second ultrasonic signal to the acoustic impedance conversion layer according to the final feedback signal, and the second ultrasonic signal is used to heat the second position.

4. The conductive slip ring deep charging monitoring and suppression device according to claim 3 is characterized in that: The temperature module also includes a power interface and a signal interface; The signal interface is used to receive the second control signal and transmit it to the third piezoelectric ceramic, and is used to transmit the second monitoring signal to the control unit; The power interface is used to receive the final feedback signal and transmit it to the third piezoelectric ceramic.

5. The conductive slip ring deep charging monitoring and suppression device according to claim 1 is characterized in that: The charge module and the temperature module are arranged at intervals.

6. The conductive slip ring deep charging monitoring and suppression device according to claim 1 is characterized in that: The plurality of temperature modules are independently controlled by the control unit.

7. The conductive slip ring deep charging monitoring and suppression device according to claim 1 is characterized in that: The control unit includes a power module, a signal processing module and a temperature control module; The signal processing module: Used to preset the electric field strength threshold; Used to receive the first monitoring signal; Used to obtain charge distribution information of the first position according to the first monitoring signal; Used to obtain an intermediate feedback signal according to the electric field strength threshold and the charge distribution information of the first position; for transmitting the intermediate feedback signal to the temperature control module; Used to receive the second monitoring signal and obtain the current temperature of the second position according to the second monitoring signal; for transmitting the current temperature of the second position to the temperature control module; The temperature control module: Used to preset the temperature threshold; Used to receive the intermediate feedback signal; for receiving the current temperature according to the second position; for obtaining a heating temperature at the second position according to the intermediate feedback signal, the current temperature at the second position and the temperature threshold; for transmitting the heating temperature of the second position to the power module; The power module: Used for power supply, the power supply module is respectively connected with the signal processing module, the temperature control module and the monitoring and suppression unit; Used to preset the operating parameters; for transmitting the first control signal to the charge module according to the operating parameter, and for transmitting the second control signal to the temperature module; for receiving the heating temperature of the second position and obtaining the final feedback signal according to the heating temperature of the second position; Used to transmit the final feedback signal to the temperature module.

8. A method for monitoring and suppressing deep charge of a conductive slip ring, implemented by using the device for monitoring and suppressing deep charge of a conductive slip ring according to any one of claims 1 to 7, characterized in that: The following steps are involved: Acquiring the operating parameters, the electric field strength threshold, and the temperature threshold and inputting them into the control unit; The control unit transmits the first control signal to the charge module according to the operating parameter, and the control unit transmits the second control signal to the temperature module according to the operating parameter; The charge module acquires a first monitoring signal of the first position on the insulating baffle according to the first control signal, and transmits the first monitoring signal to the control unit; The temperature module obtains a second monitoring signal of the second position on the insulating baffle according to the second control signal, and transmits the second monitoring signal to the control unit; The control unit receives the first monitoring signal and obtains the charge distribution information of the first position according to the first monitoring signal; The control unit obtains an intermediate feedback signal according to the electric field intensity threshold and the charge distribution information of the first position; The control unit receives the second monitoring signal, and obtains the current temperature of the second position according to the second monitoring signal; The control unit obtains the final feedback signal according to the intermediate feedback signal, the current temperature of the second position and the temperature threshold; The control unit transmits the final feedback signal to the temperature module; The temperature module heats the second location according to the final feedback signal.

9. The method for monitoring and suppressing deep charging of a conductive slip ring according to claim 8, characterized in that: The steps of obtaining the final feedback signal are: Obtaining the maximum electric field intensity at the first position according to the charge distribution information at the first position; Compare the maximum electric field strength at the first position with the electric field strength threshold: If the maximum electric field strength at the first position does not exceed the electric field strength threshold, the feedback information is a negative signal; otherwise the intermediate feedback signal includes an affirmative signal and the maximum electric field strength of the first position; Based on the affirmative signal, obtaining a heating temperature of the second position according to a current temperature of the second position, the temperature threshold, and a maximum electric field strength of the first position; The final feedback signal is obtained according to the heating temperature of the second position.

10. The method for monitoring and suppressing deep charging of a conductive slip ring according to claim 8 or 9, characterized in that: The sampling interval of the first control signal is 1~2h; When the temperature module does not receive the final feedback signal, the sampling interval of the second control signal is 1-2 hours; When the temperature module receives the final feedback signal, the sampling interval of the second control signal is 15 to 30 minutes.

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