Environment-adaptive pressure radio frequency switch and touch-on conducting method thereof

Abstract

The application discloses an environment-adaptive pressure radio frequency switch and a touch pressure conduction method thereof, and belongs to the technical field of radio frequency switches. The environment-adaptive pressure radio frequency switch comprises a packaging shell, a conduction bridge, an actuator, a sensing module and an adaptive control unit. The conduction bridge comprises a conduction piece and an elastic piece, and the conduction piece is elastically connected with the packaging shell through the elastic piece. The actuator is in transmission connection with the conduction bridge assembly. The sensing module comprises a pressure sensor arranged on the inner side of a touch pressure panel and a plurality of environment sensors arranged in the packaging shell. The adaptive control unit is in electrical connection with the pressure sensor, the actuator and the environment parameter sensing module respectively. According to the change of temperature, humidity and other environment parameters, the application can dynamically correct the drive threshold value of the radio frequency switch trigger conduction, keep the switch touch pressure sensitivity stable, avoid the problems of low-temperature drive difficulty, response lag, high-temperature threshold value being too low and easy mis-triggering, and improve the working stability and reliability of the radio frequency switch in different scenes.

Description

Technical Field

[0001] This invention relates to the field of pressure radio frequency switch technology, specifically to an environmentally adaptive pressure radio frequency switch and its contact-based conduction method. Background Technology

[0002] Radio frequency (RF) switches are core components used to control the on / off switching or routing of RF signals, and are widely used in wireless communication systems, radar systems, test and measurement equipment, and consumer electronics. Mechanical RF switches, with their low insertion loss, high isolation, and excellent RF transmission characteristics, have irreplaceable advantages in the RF band. In mechanical RF switches, RF conduction is typically achieved through a pressure-activated mechanism—the user presses the contact panel to displace the conduction bridge, thereby connecting the input and output contacts and completing the transmission control of the RF signal.

[0003] Chinese invention patent CN104124495A discloses a radio frequency (RF) mechanical switch and a microwave programmable step attenuator. The RF mechanical switch includes a moving spring, an elastic clip, a straight-through line, an attenuator, and an electromagnetic relay. The elastic clip is fixed to contact points at both ends of the attenuator, and the moving spring directly contacts the elastic clip during switching. The electromagnetic relay drives the microwave transmission moving spring to switch between the straight-through transmission line and the attenuator, thereby achieving combined control of multiple attenuation units. This switch uses direct mechanical contact between the moving spring and the attenuator, and the electromagnetic relay drives the moving spring to switch between the straight-through line and the attenuator, achieving RF signal gating control.

[0004] However, the existing technical solutions still have shortcomings: the drive threshold is fixed, and there is a lack of environmental adaptability. The switching of the moving reed is controlled by an electromagnetic relay with a fixed drive signal, and there is no mechanism to dynamically adjust the drive threshold according to changes in environmental parameters. In practical applications, changes in ambient temperature will change the elastic modulus of the elastic clip, which will cause the reset force of the moving reed to drift; changes in ambient humidity may affect the contact resistance and friction characteristics of the contact surface. Under the premise of a fixed drive threshold, changes in environmental parameters will cause uncontrollable fluctuations in the switch's contact sensitivity: in low-temperature environments, there may be problems with driving difficulties and delayed response, while in high-temperature environments, the threshold may be too low and prone to false triggering. Summary of the Invention

[0005] The purpose of this invention is to overcome the above-mentioned technical deficiencies and propose an environmentally adaptive pressure radio frequency switch and its contact pressure conduction method. This invention solves the technical problem in the prior art where the driving threshold is fixed and cannot be corrected and compensated according to changes in environmental parameters such as temperature and humidity. This results in fluctuations in the switch's contact pressure sensitivity with environmental changes, which can easily lead to response hysteresis or false triggering.

[0006] To achieve the above-mentioned technical objectives, the present invention adopts the following technical solution: In a first aspect, the present invention provides an environmentally adaptive pressure radio frequency switch, comprising: The enclosure has a touch panel on one side, and input contacts and output contacts are fixedly installed inside it; A conductive bridge includes a conductive element and an elastic element. The two ends of the conductive element are respectively arranged opposite to the input contact and the output contact. The conductive element is elastically connected to the packaging housing through the elastic element. An actuator, which is connected to the conducting bridge assembly, is used to drive the conducting element to perform a displacement action relative to the input contact and the output contact; The sensing module includes a pressure sensor disposed on the inner side of the touch panel, and multiple environmental sensors disposed inside the encapsulation housing; and An adaptive control unit is electrically connected to the pressure sensor, actuator, and environmental parameter sensing module, respectively. It is configured to receive the pressure signal output by the pressure sensor and the environmental parameter signal output by the environmental parameter sensor, and to correct and compensate the driving threshold of the actuator according to the environmental parameter signal.

[0007] In some embodiments, the plurality of environmental sensors include at least one of a temperature sensor, a humidity sensor, and a barometric pressure sensor.

[0008] In some embodiments, the drive actuator includes a plurality of electrostatic drive micro-actuators symmetrically arranged on both sides of the conduction bridge assembly; The electrostatically driven micro actuator includes a fixed electrode and a movable electrode. The fixed electrode is fixed inside the package housing, and the movable electrode is fixed on the conductive element. The fixed electrode and the movable electrode are opposite to each other and spaced apart. When the adaptive control unit applies a driving voltage to the fixed electrode and the movable electrode, the movable electrode, under the action of electrostatic force, drives the conductive element to move toward the side where the input contact and the output contact are located.

[0009] In some embodiments, the adaptive control unit includes a signal acquisition module, a signal processing module, a determination and driving module, and a storage module; The signal acquisition module is connected to the pressure sensor and the environmental parameter sensor respectively; The signal processing module is used to perform analog-to-digital conversion and filtering preprocessing on the collected raw touch pressure signal and environmental parameter signal to extract standard feature signals; The storage module contains a table of driving threshold correction parameters under different environmental parameter conditions. The determination and driving module is used to call the corresponding correction parameters in the storage module according to the current environmental parameter signals, calculate the corrected target driving threshold, compare the standard feature signal with the target driving threshold, and output a driving control signal to the driving actuator when the triggering condition is met.

[0010] In some embodiments, the elastic element is a folded elastic cantilever or compression spring symmetrically arranged on both sides of the conductor.

[0011] In some embodiments, the environmental adaptive pressure radio frequency switch further includes a mechanical triggering unit, which includes a mechanical triggering mechanism, an elastic limiting element, and a conduction switch. The mechanical triggering mechanism has a fixed end and a movable end. The fixed end is fixedly connected to the encapsulation housing and has a sliding groove inside and a connecting channel connecting the sliding groove to the outside of the touch panel. One end of the movable end is slidably fitted in the sliding groove, and the other end is disposed opposite to the conductive element. The elastic limiting member is connected between the fixed end and the movable end, and is used to apply a reset elastic force to the movable end away from the direction of the input contact and the output contact; The energizing switch is movably mounted on the fixed end and corresponds to the connecting channel, used to open or close the connecting channel; when the connecting channel is open, the pressure medium on the outside of the touch panel enters the slide groove through the connecting channel, pushing the movable end to overcome the reset force of the elastic limit member and move towards the energizing member, thereby pushing the energizing member to simultaneously contact the input contact and the output contact.

[0012] In some embodiments, the fixed end of the mechanical triggering mechanism includes a fixed seat and a fixed rod, and the movable end includes a sliding piston and a pressure rod; The fixing base is fixedly installed on the inner wall of the encapsulation housing, and the connection channel is provided inside it; The fixing rod is fixedly connected to the fixing base, and the sliding groove is coaxially formed inside the rod. The sliding piston is slidably sealed within the groove; The pressure contact rod is coaxially and fixedly connected to one end of the sliding piston near the conductor. The elastic limiting member is a return spring sleeved on the outside of the fixed rod, and the two ends of the return spring are respectively connected to the fixed rod and the pressure contact rod.

[0013] In some embodiments, the conducting switch includes a sealing gate, a linkage plate, and a magnetic attracting element; One end of the fixed end of the mechanical triggering mechanism is provided with a barrier groove that penetrates the connecting channel; The sealing gate is slidably disposed in the barrier groove, and one end of it is magnetically connected to the fixed end through the magnetic attractant; The linkage plate is located inside the touch panel. When the magnetic connection is released, it is subjected to the touch pressure of the touch panel and moves in the same direction as the touch panel, thereby driving the sealing gate to slide and open the connection channel.

[0014] In some embodiments, the mechanical triggering mechanism is provided in two sets, which are respectively arranged at both ends of the conductive member, and their positions correspond to the input contact and the output contact, respectively.

[0015] Secondly, the present invention also provides a pressure-activated method, comprising an environmentally adaptive pressure radio frequency switch as described in any one of the above claims, the method comprising: The pressure sensor collects the touch pressure signal applied by the user to the touch panel, and at the same time, the environmental parameter signals inside the packaging shell are collected in real time by each of the environmental parameter sensors. The collected touch pressure signal and environmental parameter signal are transmitted to the adaptive control unit, and standard feature signals are extracted after analog-to-digital conversion and preprocessing. The adaptive control unit calls the driving threshold correction parameters corresponding to different environmental parameters pre-stored in the storage module, and calculates the corrected target driving threshold by combining the currently collected environmental parameter signals. The standard feature signal is compared with the corrected target driving threshold. When the standard feature signal meets the preset triggering condition, a driving signal is output to the driving actuator. After receiving the drive signal, the drive actuator drives the conduction bridge assembly to move in the conduction direction against the elastic force of the elastic element, so that the conduction element simultaneously contacts the input contact and the output contact, thereby realizing radio frequency conduction.

[0016] Compared with existing technologies, the environmental adaptive pressure RF switch and its contact-based conduction method provided by this invention, by adding an environmental parameter sensing module and an adaptive control unit, can dynamically correct and compensate the driving threshold for triggering conduction of the RF switch based on real-time collected environmental temperature, humidity, and air pressure parameters. This offsets the sensitivity drift caused by changes in the elastic modulus of the elastic element with environmental variations, ensuring that the contact sensitivity of the switch remains stable under different environments. It solves the technical defects of existing technologies, such as difficulty in driving at low temperatures and delayed response, and easy false triggering due to excessively low high temperature thresholds. This significantly improves the working stability and reliability of the pressure RF switch in different application scenarios. Attached Figure Description

[0017] Figure 1This is a three-dimensional structural schematic diagram of the environmentally adaptive pressure radio frequency switch provided in an embodiment of the present invention; Figure 2 This is a three-dimensional structural schematic diagram of the environmentally adaptive pressure radio frequency switch provided in an embodiment of the present invention; Figure 3 This is a schematic diagram of the front cross-sectional structure of the environmental adaptive pressure radio frequency switch provided in an embodiment of the present invention; Figure 4 yes Figure 3 Enlarged structural diagram at point A in the middle; Figure 5 This is a block diagram of the adaptive control unit structure of the environmental adaptive pressure radio frequency switch provided in an embodiment of the present invention; Figure 6 This is a flowchart of the pressure-conduction method provided in the embodiments of the present invention.

[0018] Explanation of reference numerals in the attached figures: 1. Encapsulation housing; 11. Touch panel; 12. Input contact; 13. Output contact; 14. Lead terminal; 2. Conductor bridge; 21. Conductor component; 211. Bridge body; 212. Connecting frame; 22. Elastic component; 3. Actuator; 31. Fixture; 32. Fixed electrode; 33. Movable electrode; 4. Sensing module; 41. Pressure sensor; 42. Environmental sensor; 5. Adaptive control unit; 51. Signal acquisition module; 52. Signal processing module; 53. Decision and drive module; 54. Storage module; 6. Mechanical triggering unit; 61. Mechanical triggering mechanism; 6101. Slide groove; 6102. Connecting channel; 611. Fixed base; 612. Fixed rod; 613. Sliding piston; 614. Pressing rod; 62. Elastic limiting element; 63. Conducting switch; 631. Sealing gate; 632. Linkage plate; 633. Magnetic suction element. Detailed Implementation

[0019] To make the objectives, technical solutions, and advantages of this invention clearer, the invention will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative and not intended to limit the invention.

[0020] To address the technical problem of a fixed drive threshold that cannot be adjusted for changes in environmental parameters such as temperature and humidity, leading to fluctuations in switch sensitivity and potential response lag or false triggering, this invention provides an environmentally adaptive pressure RF switch and its contact-based conduction method. This method dynamically adjusts the RF switch's trigger threshold based on changes in environmental parameters such as temperature and humidity, compensating for sensitivity shifts caused by changes in the elastic modulus of the elastic element and contact friction characteristics. This ensures the switch's contact sensitivity remains within a stable range, effectively avoiding the difficulties in driving and response lag in low-temperature environments, and the problems of excessively low thresholds and false triggering in high-temperature environments. This significantly improves the stability and reliability of the RF switch in various application scenarios. Simultaneously, a mechanical trigger backup structure is retained, allowing manual contact-based RF conduction even in the event of a power supply failure, further enhancing the switch's environmental adaptability and reliability.

[0021] Please see Figures 1 to 5 In a first aspect, the present invention provides an environmentally adaptive pressure radio frequency switch, including a package housing 1, a conduction bridge 2, an actuator 3, a sensing module 4, and an adaptive control unit 5.

[0022] Please see Figures 1 to 3 To ensure a stable mounting base for all internal functional components of the RF switch and to guarantee reliable transmission of touch operations, the package housing 1 has an overall rectangular box-like structure, integrally molded from insulating materials such as engineering plastics or ceramics. A mounting opening is provided on the top wall of the package housing 1, and a touch panel 11 is provided. The touch panel 11 is connected to the edge of the mounting opening via an elastic membrane with a certain deformation capability. It can generate a slight downward displacement when pressed and return to its initial position after the pressure is removed, providing initial triggering power for the actuator 3, thereby completely transmitting the externally applied pressing action to the internal conducting bridge 2. Inside the package housing 1, input contacts 12 and output contacts 13 are fixedly mounted via a horizontal mounting plate. Both input contacts 12 and output contacts 13 are made of conductive metal, spaced apart and with their upper surfaces basically flush, used to transmit RF signals in the conducting state. Input contacts 12 and output contacts 13 are electrically connected to external RF circuits via lead terminals 14 passing through the bottom wall of the package housing 1.

[0023] The encapsulation housing 1 also has multiple mounting bosses and positioning slots inside, which are used to fix components such as the conduction bridge 2 assembly, actuator 3, and adaptive control unit 5. The side wall of the encapsulation housing 1 has several ventilation micro-holes to ensure the balance between the internal air pressure and the external environment, and to avoid the air resistance effect of the sealed cavity on the movement of the conduction bridge 2.

[0024] Please see Figures 1 to 4In this embodiment, the conductive bridge 2 includes a conductive element 21 and an elastic element 22. The two ends of the conductive element 21 are respectively arranged opposite to the input contact 12 and the output contact 13. The conductive element 21 is elastically connected to the encapsulation housing 1 through the elastic element 22. The elastic element 22 is a folded elastic cantilever or compression spring symmetrically arranged on both sides of the conductive element 21. The actuator 3 is drively connected to the conductive bridge 2 assembly and is used to drive the conductive element 21 to perform displacement relative to the input contact 12 and the output contact 13.

[0025] When the external pressure is applied to the touch panel 11, the actuator 3 receives a trigger signal and drives the conductive member 21 to move downward, so that the conductive contact parts at both ends of the conductive member 21 simultaneously and stably fit with the input contact 12 and the output contact 13. At this time, the RF switch switches to the on state. After the external pressure is removed, the elastic member 22 drives the conductive member 21 to reset, disconnecting the electrical connection between the input contact 12 and the output contact 13, and the switch switches to the off state.

[0026] Please see Figures 1 to 3 In some possible embodiments, the drive actuator 3 includes multiple electrostatically driven micro-actuators 3 symmetrically arranged on both sides of the conductive bridge 2 assembly; each electrostatically driven micro-actuator 3 includes a fixed electrode 32 and a movable electrode 33. The conductive component 21 includes a bridge body 211 and a connecting frame 212. The bridge body 211 is an elongated conductive structure with conductive contacts made of silver alloy at both ends. The connecting frame 212 is fixed to the top of the bridge body 211. Inside the encapsulation housing 1, a fixing frame 31 is fixedly installed at the position corresponding to the connecting frame 212. The fixed electrode 32 is fixed to the fixing frame 31, and the movable electrode 33 is fixed to the connecting frame 212. The fixed electrode 32 and the movable electrode 33 are positioned opposite each other and spaced apart in their natural state. The fixing frame 31 and the connecting frame 212 are both made of insulating material. The fixed electrode 32 and the movable electrode 33 are both comb-shaped electrode sheets made of conductive metal. The comb teeth of the movable electrode 33 and the comb teeth of the fixed electrode 32 are arranged opposite each other and staggered, maintaining a small initial gap between them.

[0027] The fixed electrode 32 and the movable electrode 33 are electrically connected to the determination and drive module 53 of the adaptive control unit 5 via wires. When the determination and drive module 53 determines that the touch pressure signal meets the trigger condition, it applies a drive voltage between the fixed electrode 32 and the movable electrode 33. Under the action of electrostatic force, the movable electrode 33 is displaced towards the fixed electrode 32, causing the connecting frame 212 and the bridge body 211 to move downward synchronously, ultimately causing the conductive contact parts at both ends of the conductive element 21 to contact the input contact 12 and the output contact 13, completing the switching. When the touch pressure signal disappears, the adaptive control unit 5 cuts off the drive voltage, the electrostatic force disappears, the elastic element 22 drives the conductive bridge 2 and the movable electrode 33 to reset, and the switch returns to the open state.

[0028] Please see Figures 1 to 3 In order to fully sense the user's touch operation and monitor the changes in environmental parameters inside and around the switch in real time, in this embodiment, the sensing module includes a pressure sensor 41 and multiple environmental parameter sensors.

[0029] In one possible embodiment, the pressure sensor 41 is a thin-film piezoresistive sensor or a capacitive pressure sensor, which is attached to the inner surface of the touch panel 11 to sense the touch pressure generated when the user presses the touch panel 11 and convert it into an electrical signal.

[0030] In one possible embodiment, multiple environmental sensors 42, including a temperature sensor, a humidity sensor, and a pressure sensor, are arranged at different locations inside the enclosure 1. Specifically, the temperature sensor employs a thermistor or a semiconductor temperature sensing chip to monitor the operating temperature inside the switch in real time; the humidity sensor employs a capacitive humidity-sensitive element to monitor the internal humidity; and the pressure sensor employs a MEMS pressure sensing chip to monitor the internal pressure. Each environmental parameter sensor is electrically connected to the adaptive control unit 5 via a flexible circuit board or wires, transmitting the collected environmental parameter signals to the adaptive control unit 5 in real time.

[0031] Of course, in other possible embodiments, the types of environmental parameter sensors are not limited to temperature sensors, humidity sensors, and barometric pressure sensors. Other types of sensors can be reduced, added, or replaced according to actual application requirements. For example, only temperature and humidity sensors can be provided, omitting the barometric pressure sensor, or an additional displacement sensor can be added to monitor the operating status of the conduction bridge 2. Accelerometers, vibration sensors, or magnetic field sensors can also be used.

[0032] Please see Figure 5 To achieve the core function of adaptively correcting the driving threshold based on environmental parameters, this embodiment provides a preferred structure of the adaptive control unit 5 and its control logic. The adaptive control unit 5 is implemented using an ASIC chip or FPGA and is installed on the bottom inner wall of the package housing 1. The adaptive control unit 5 includes a signal acquisition module 51, a signal processing module 52, a judgment and driving module 53, and a storage module 54.

[0033] The signal acquisition module 51 is electrically connected to the pressure sensor 41 and each environmental parameter sensor. It integrates a multi-channel analog-to-digital converter (ADC) to synchronously acquire the analog pressure signal output by the pressure sensor 41 and the analog environmental parameter signals output by each environmental parameter sensor at a preset sampling frequency, and convert them into digital signals. In this embodiment, the preset sampling frequency is 100Hz.

[0034] The signal processing module 52 is used to preprocess the acquired raw pressure signal and environmental parameter signal. Specifically, the signal processing module 52 integrates a low-pass digital filter to filter out high-frequency noise components in the pressure signal; it also integrates a baseline drift compensation algorithm to eliminate sensor baseline offset caused by temperature changes. After preprocessing, the signal processing module 52 extracts standard feature signals that can be used for judgment, such as the peak value, rate of change, or duration of the pressure.

[0035] The storage module 54 is a non-volatile memory EEPROM or Flash, which pre-stores a drive threshold correction parameter table corresponding to different combinations of environmental parameters. This correction parameter table was obtained through previous calibration experiments. Under different combinations of temperature, humidity and air pressure, the minimum drive voltage required for the conduction bridge 2 to operate reliably was tested, and the correction coefficient under each environmental condition was calculated based on the drive threshold under the reference environment.

[0036] The determination and drive module 53 is used to calculate the target drive threshold under the current environment by calling the corresponding correction parameters in the storage module 54 based on the currently collected environmental parameter signals; then, it compares the pressure signal characteristics processed by the signal processing module 52 with the target drive threshold. When the pressure peak exceeds the target drive threshold and the duration is greater than the preset duration, it is determined that the pressure signal characteristics meet the preset triggering conditions, and the determination and drive module 53 outputs the corresponding drive signal to the actuator 3, so that the adaptive control unit 5 receives the pressure signal output by the pressure sensor 41 and the environmental parameter signal output by the environmental parameter sensor, and corrects and compensates the drive threshold of the actuator 3 according to the environmental parameter signal, thereby offsetting the influence of environmental factors such as temperature, humidity, and air pressure on the detection accuracy of the pressure sensor 41 and the drive performance of the actuator 3.

[0037] Please see Figures 1 to 4To provide a reliable backup triggering method in case of electronic control system failure or special application scenarios, this embodiment provides a mechanical triggering unit 6, which includes a mechanical triggering mechanism 61, an elastic limiting member 62, and a conductive switch 63. Specifically, the mechanical triggering mechanism 61 has a fixed end and a movable end. The fixed end is fixedly connected to the encapsulation housing 1, and has a sliding groove 6101 and a connecting channel 6102 connecting the sliding groove 6101 to the outside of the touch panel 11. One end of the movable end is slidably engaged in the sliding groove 6101, and the other end is disposed opposite to the conductive member 21. The elastic limiting member 62 is connected between the fixed end and the movable end, and is used to apply a reset spring force to the movable end away from the direction of the input contact 12 and the output contact 13. In the initial state, the movable end is held in an initial position away from the conductive part under the action of the elastic limiting member 62, and a predetermined gap is maintained between it and the conductive part. The conductive switch 63 is movably disposed on the fixed end and corresponds to the connecting channel 6102, and is used to open or seal the connecting channel 6102.

[0038] When the conducting switch 63 seals the connection channel 6102, the pressure medium outside the pressure panel 11 cannot enter the slide groove 6101, the mechanical triggering mechanism 61 does not operate, and the switch is in the electronic triggering mode. When the conducting switch 63 opens the connection channel 6102, the pressure medium outside the pressure panel 11 enters the slide groove 6101 through the connection channel 6102, pushing the movable end to overcome the reset spring force of the elastic limit member 62 and move towards the conducting part. The end of the movable end pushes the conducting part downward, so that the conducting part simultaneously contacts the input contact 12 and the output contact 13, realizing mechanical conduction. It can be used for manual or pressure-triggered conduction under special high-pressure conditions such as downhole and deep sea, and can also be used as a backup conduction method after the electronic control system fails, ensuring that the core radio frequency link can still achieve reliable on / off control in extreme scenarios.

[0039] Preferably, two sets of mechanical triggering mechanisms 61 are provided, with the two sets of mechanical triggering mechanisms 61 respectively arranged at both ends of the conductive part, and their positions corresponding to the input contact 12 and the output contact 13 respectively. When the two sets of mechanical triggering mechanisms 61 operate synchronously, they can push both ends of the conductive part evenly, ensuring that the conductive part obtains uniform contact pressure between itself and the input contact 12 and the output contact 13, thereby improving the reliability of the conduction.

[0040] To further improve the operational reliability and sealing performance of the mechanical triggering mechanism 61, in some possible embodiments, the fixed end of the mechanical triggering mechanism 61 includes a fixed seat 611 and a fixed rod 612, and the movable end includes a sliding piston 613 and a pressure rod 614. The fixed seat 611 is a block-shaped structure, fixedly installed on the inner wall of the encapsulation housing 1, and has a connecting channel 6102 inside. The fixed rod 612 is a hollow tubular structure, its top end fixedly connected to the fixed seat 611, and has a coaxial sliding groove 6101 inside. The inner wall of the sliding groove 6101 is a smooth circular hole structure to ensure smooth sliding of the movable end. The sliding piston 613 is a cylindrical structure, its outer diameter matching the inner diameter of the sliding groove 6101, and slides within the sliding groove 6101. An annular sealing groove is formed on the outer peripheral wall of the sliding piston 613, and an O-ring is embedded in the sealing groove to achieve a sliding seal between the sliding piston 613 and the inner wall of the sliding groove 6101, preventing leakage of the pressure medium.

[0041] The pressure rod 614 is coaxially fixedly connected to the end of the sliding piston 613 near the conduction part. Its outer diameter is smaller than the inner diameter of the groove 6101. The pressure rod 614 extends out from the lower end opening of the groove 6101 and extends towards the conduction part. The elastic limiting member 62 is a return spring sleeved on the outside of the fixed rod 612. The upper end of the return spring abuts against the lower end face of the fixed rod 612, and the lower end abuts against the stepped surface of the pressure rod 614. It is used to apply a return force to the sliding piston 613 away from the conduction part. When the connecting channel 6102 is opened, the external pressure medium enters the groove 6101 through the connecting channel 6102 and acts on the upper end face of the sliding piston 613, pushing the sliding piston 613 to slide downward against the elastic force of the return spring, thereby driving the pressure rod 614 to push downward against the conduction part to achieve conduction.

[0042] To achieve the linkage control between the pressing action of the touch panel 11 and the opening of the mechanical trigger channel, in some possible embodiments, the conducting switch 63 includes a sealing gate 631, a linkage plate 632, and a magnetic attractor 633. Specifically, one end of the fixed base 611 of the mechanical trigger mechanism 61 has a vertical through-connecting channel 6102 with a blocking groove. The sealing gate 631 is a thin sheet structure with a sealing ring embedded on its side, the width of which matches the width of the blocking groove, and it is slidably disposed in the blocking groove. At least one end of the sealing gate 631 is provided with a ferromagnetic armature or is made entirely of ferromagnetic material. The magnetic attractor 633 is an electromagnet, which is fixedly embedded inside the blocking groove, its position corresponding to the armature of the sealing gate 631, and the electromagnet is electrically connected to the internal power supply circuit of the switch through a wire.

[0043] When the switch is in normal operation, the electromagnet is energized and generates magnetic attraction, which attracts and holds the sealing gate 631 in the blocking groove, thus blocking the connection channel 6102. At this time, the pressure medium on the outside of the touch panel 11 cannot enter the slide groove 6101, the mechanical triggering mechanism 61 does not operate, the switch is in the electronic triggering mode, and the actuator 3 responds to the drive signal of the adaptive control unit 5 to perform the conduction action.

[0044] The linkage plate 632 is disposed on the inner side of the touch panel 11 and is fixedly connected to or integrally formed with the inner wall of the touch panel 11. The linkage plate 632 extends toward the sealing gate 631 and forms a linkage engagement with the end of the sealing gate 631. Specifically, the sealing gates 631 of the two mechanical triggering units 6 are connected by a linkage plate 632. The sealing gate 631 is connected to the mounting port of the encapsulation housing through an elastic membrane and has a certain sliding space within the mounting port. When an abnormal situation occurs such as a circuit fault, power interruption, or actuator 3 failure inside the switch, the electromagnet loses power, its magnetic attraction disappears, and the sealing gate 631 is no longer subject to attraction and is in a freely sliding state. At this time, the medium pressure acts on the linkage plate 632 through the touch panel 11 on the outside of the touch panel 11. The linkage plate 632 and the touch panel 11 move downward under the pressure of the medium, and push the sealing gate 631 to slide downward along the barrier groove, so that the top of the sealing gate 631 moves to a position below the bottom wall of the connecting channel 6102, opening the connecting channel 6102. After the connecting channel 6102 is opened, the pressure medium in the external environment can enter the slide groove 6101 through the connecting channel 6102, pushing the movable end downward. The end of the movable end pushes the conductive part downward, so that the conductive part simultaneously contacts the input contact 12 and the output contact 13, realizing mechanical conduction.

[0045] When the external medium pressure stops being applied, the elastic limiter pushes the movable end upward to reset, and the touch panel 11 can reset under the action of the elastic diaphragm, driving the linkage plate 632 and the sealing gate 631 to retract, so that the sealing gate 631 slides back to its initial position in the blocking groove, blocking and sealing the connecting channel 6102 again. At the same time, the electromagnet is re-energized, and the sealing gate 631 is once again attracted and fixed in the blocking position, and the switch returns to the electric trigger mode.

[0046] It should be noted that when this device is used in high-pressure scenarios such as underground, deep sea, or high-pressure reactors, the pressure medium is a high-pressure liquid or gas in the environment. When the pressure of the high-pressure liquid or gas in the environment increases and the electromagnet is de-energized, the pressure will act on the touch panel 11 through the elastic diaphragm. Since the sealing gate 631 is connected to the touch panel 11 through the linkage plate 632, it will be pushed down a certain distance under the external pressure to release the seal on the connection channel 6101 and automatically switch to mechanical trigger mode. The pressure sensor 41 below the touch panel 11 detects the pressure change and triggers the opening and closing of the conduction bridge 2 accordingly.

[0047] Of course, in other possible embodiments, the conducting switch 63 is not limited to the above-described electromagnet adsorption type sealing gate 631 structure, and can also be an elastic reset type gate, etc.; the external pressure medium is not limited to a gas medium, and can also be a liquid medium as the pressure transmission medium, which can adapt to different application scenarios.

[0048] Please see Figures 1 to 6 Secondly, the present invention also provides a pressure-activated method, comprising an environmentally adaptive pressure radio frequency switch as described in any of the above claims, the method comprising: S1: The pressure sensor 41 collects the touch pressure signal applied by the user to the touch panel 11, and at the same time, the environmental parameter signals inside the housing 1 are collected in real time through various environmental parameter sensors. S2: The collected touch pressure signal and environmental parameter signal are transmitted to the adaptive control unit 5, and the standard feature signal is extracted after analog-to-digital conversion and preprocessing. S3: The adaptive control unit 5 calls the drive threshold correction parameters corresponding to different environmental parameters pre-stored in the storage module 54, and calculates the corrected target drive threshold by combining the currently collected environmental parameter signals. S4: Compare the standard feature signal with the corrected target drive threshold. When the standard feature signal meets the preset trigger condition, output the drive signal to the drive actuator 3. S5: After receiving the drive signal, the drive actuator 3 drives the conductive bridge 2 assembly to move in the conduction direction against the elastic force of the elastic element 22, so that the conductive element 21 simultaneously contacts the input contact 12 and the output contact 13, thereby realizing radio frequency conduction.

[0049] Based on the environmentally adaptive pressure RF switch, embodiments of this application also provide a more specific set of implementation steps, including: Step 1: Signal Acquisition The pressure sensor 41 collects the touch pressure signal applied by the user to the touch panel 11 in real time. At the same time, the temperature sensor, humidity sensor, and air pressure sensor collect the temperature signal, humidity signal, and air pressure signal inside the housing 1 in real time, respectively. Each sensor samples synchronously at a preset sampling frequency and transmits the collected analog signal to the signal acquisition module 51 of the adaptive control unit 5.

[0050] Step 2: Signal Processing The signal acquisition module 51 converts the received analog signals into digital signals and transmits them to the signal processing module 52. The signal processing module 52 performs low-pass filtering on the digitized touch pressure signal to remove high-frequency noise components; simultaneously, it performs mean filtering on the digitized environmental parameter signals to eliminate transient fluctuation interference. After preprocessing, the signal processing module 52 extracts standard characteristic signals from the touch pressure signal, such as the peak value and rate of change of the touch pressure.

[0051] Step 3: Threshold Correction and Judgment The determination and driving module 53 acquires the current temperature, humidity, and air pressure, and calls the driving threshold correction parameter table for different combinations of environmental parameters pre-stored in the storage module 54. Based on the current combination of environmental parameters, it performs interpolation lookup in the correction parameter table to obtain the correction coefficient for the current environment, and multiplies the baseline driving threshold by the correction coefficient to calculate the corrected target driving threshold. Subsequently, the determination and driving module 53 compares the extracted pressure feature signal with the corrected target driving threshold: when the pressure peak value is greater than or equal to the target driving threshold and the pressure change rate is greater than a preset change rate threshold, the pressure signal is determined to meet the triggering condition.

[0052] Step 4: Driver Execution When the determination and drive module 53 determines that the triggering condition is met, it outputs a drive signal to the actuator 3. Specifically, the determination and drive module 53 applies a drive voltage to the fixed electrode 32 and the movable electrode 33 of the electrostatically driven micro-actuator 3. Under the action of electrostatic force, the movable electrode 33 drives the conductive part to move towards the input contact 12 and the output contact 13 against the elastic force of the elastic member 22, until both ends of the conductive part simultaneously contact the input contact 12 and the output contact 13, and the radio frequency signal path is turned on.

[0053] Step 5: Reset When the touch operation stops, the touch pressure signal detected by the pressure sensor 41 drops below the trigger condition, and the drive module 53 cancels the drive signal output to the actuator 3. The electrostatic force of the electrostatic drive micro-actuator 3 disappears, and the conductive part returns to its initial position under the reset force of the elastic member 22, disconnecting the electrical connection between the input contact 12 and the output contact 13, and the RF switch returns to the off state.

[0054] In the description of this application, it should be noted that the terms "upper" and "lower," etc., indicating the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application. Unless otherwise expressly specified and limited, the terms "installed," "connected," and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two elements. For those skilled in the art, the specific meaning of the above terms in this application can be understood according to the specific circumstances.

[0055] It should be noted that in this application, relational terms such as "first" and "second" are used merely to distinguish one entity or operation from another, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Furthermore, the terms "comprising," "including," or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such a process, method, article, or apparatus. Without further limitations, an element defined by the phrase "comprising one..." does not exclude the presence of other identical elements in the process, method, article, or apparatus that includes said element.

[0056] The specific embodiments of the present invention described above do not constitute a limitation on the scope of protection of the present invention. Any other corresponding changes and modifications made in accordance with the technical concept of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An environmentally adaptive pressure radio frequency switch, characterized in that, include: The enclosure has a touch panel on one side, and input contacts and output contacts are fixedly installed inside it; A conductive bridge includes a conductive element and an elastic element. The two ends of the conductive element are respectively arranged opposite to the input contact and the output contact. The conductive element is elastically connected to the packaging housing through the elastic element. An actuator, which is connected to the conducting bridge assembly, is used to drive the conducting element to perform a displacement action relative to the input contact and the output contact; The sensing module includes a pressure sensor disposed on the inner side of the touch panel, and multiple environmental sensors disposed inside the encapsulation housing; and An adaptive control unit is electrically connected to the pressure sensor, actuator, and environmental parameter sensing module, respectively. It is configured to receive the pressure signal output by the pressure sensor and the environmental parameter signal output by the environmental parameter sensor, and to correct and compensate the driving threshold of the actuator according to the environmental parameter signal.

2. The environmentally adaptive pressure radio frequency switch according to claim 1, characterized in that, The plurality of environmental sensors include at least one of a temperature sensor, a humidity sensor, and a barometric pressure sensor.

3. The environmentally adaptive pressure radio frequency switch according to claim 1, characterized in that, The drive actuator includes a plurality of electrostatic drive micro-actuators symmetrically arranged on both sides of the conduction bridge assembly; The electrostatically driven micro actuator includes a fixed electrode and a movable electrode. The fixed electrode is fixed inside the package housing, and the movable electrode is fixed on the conductive element. The fixed electrode and the movable electrode are opposite to each other and spaced apart. When the adaptive control unit applies a driving voltage to the fixed electrode and the movable electrode, the movable electrode, under the action of electrostatic force, drives the conductive element to move toward the side where the input contact and the output contact are located.

4. The environmentally adaptive pressure radio frequency switch according to claim 1, characterized in that, The adaptive control unit includes a signal acquisition module, a signal processing module, a decision and drive module, and a storage module; The signal acquisition module is connected to the pressure sensor and the environmental parameter sensor respectively; The signal processing module is used to perform analog-to-digital conversion and filtering preprocessing on the collected raw touch pressure signal and environmental parameter signal to extract standard feature signals; The storage module contains a table of driving threshold correction parameters under different environmental parameter conditions. The determination and driving module is used to call the corresponding correction parameters in the storage module according to the current environmental parameter signals, calculate the corrected target driving threshold, compare the standard feature signal with the target driving threshold, and output a driving control signal to the driving actuator when the triggering condition is met.

5. The environmentally adaptive pressure radio frequency switch according to claim 1, characterized in that, The elastic element is a folded elastic cantilever or compression spring symmetrically arranged on both sides of the conductor.

6. The environmentally adaptive pressure radio frequency switch according to claim 1, characterized in that, It also includes a mechanical triggering unit, which includes a mechanical triggering mechanism, an elastic limiting element, and a conducting switch; The mechanical triggering mechanism has a fixed end and a movable end. The fixed end is fixedly connected to the encapsulation housing and has a sliding groove inside and a connecting channel connecting the sliding groove to the outside of the touch panel. One end of the movable end is slidably fitted in the sliding groove, and the other end is disposed opposite to the conductive element. The elastic limiting member is connected between the fixed end and the movable end, and is used to apply a reset elastic force to the movable end away from the direction of the input contact and the output contact; The energizing switch is movably mounted on the fixed end and corresponds to the connecting channel, used to open or close the connecting channel; when the connecting channel is open, the pressure medium on the outside of the touch panel enters the slide groove through the connecting channel, pushing the movable end to overcome the reset force of the elastic limit member and move towards the energizing member, thereby pushing the energizing member to simultaneously contact the input contact and the output contact.

7. The environmentally adaptive pressure radio frequency switch according to claim 6, characterized in that, The fixed end of the mechanical triggering mechanism includes a fixed base and a fixed rod, and the movable end includes a sliding piston and a pressure rod; The fixing base is fixedly installed on the inner wall of the encapsulation housing, and the connection channel is provided inside it; The fixing rod is fixedly connected to the fixing base, and the sliding groove is coaxially formed inside the rod. The sliding piston is slidably sealed within the groove; The pressure contact rod is coaxially and fixedly connected to one end of the sliding piston near the conductor. The elastic limiting member is a return spring sleeved on the outside of the fixed rod, and the two ends of the return spring are respectively connected to the fixed rod and the pressure contact rod.

8. The environmentally adaptive pressure radio frequency switch according to claim 6, characterized in that, The conduction switch includes a sealing gate, a linkage plate, and a magnetic attraction component; One end of the fixed end of the mechanical triggering mechanism is provided with a barrier groove that penetrates the connecting channel; The sealing gate is slidably disposed in the barrier groove, and one end of it is magnetically connected to the fixed end through the magnetic attractant; The linkage plate is located inside the touch panel. When the magnetic connection is released, it is subjected to the touch pressure of the touch panel and moves in the same direction as the touch panel, thereby driving the sealing gate to slide and open the connection channel.

9. The environmentally adaptive pressure radio frequency switch according to claim 6, characterized in that, The mechanical triggering mechanism is provided in two sets, which are respectively arranged at both ends of the conductive element, and their positions correspond to the input contact and the output contact, respectively.

10. A pressure-activated conduction method, characterized in that, Including the environmentally adaptive pressure radio frequency switch as described in any one of claims 1-9, the method includes: The pressure sensor collects the touch pressure signal applied by the user to the touch panel, and at the same time, the environmental parameter signals inside the packaging shell are collected in real time by each of the environmental parameter sensors. The collected touch pressure signal and environmental parameter signal are transmitted to the adaptive control unit, and standard feature signals are extracted after analog-to-digital conversion and preprocessing. The adaptive control unit calls the driving threshold correction parameters corresponding to different environmental parameters pre-stored in the storage module, and calculates the corrected target driving threshold by combining the currently collected environmental parameter signals. The standard feature signal is compared with the corrected target driving threshold. When the standard feature signal meets the preset triggering condition, a driving signal is output to the driving actuator. After receiving the drive signal, the drive actuator drives the conduction bridge assembly to move in the conduction direction against the elastic force of the elastic element, so that the conduction element simultaneously contacts the input contact and the output contact, thereby realizing radio frequency conduction.

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