Pressure transmitter and mistaken touch prevention method thereof

Abstract

The pressure transmitter comprises a window cover module, a capacitive key module, a main control module, an electronic bin module, a blind cover module and a sensor module, the window cover module is installed on the upper end face of the capacitive key module, and the lower end face of the capacitive key module is connected with the main control module; an internal circuit of the main control module is electrically connected with the sensor module, the electronic bin module and the capacitance key module respectively; the window cover module is used for transmitting an external pressure signal to the capacitance key module; the capacitance key module is used for receiving pressure signals aiming at different key positions and converting the pressure signals into corresponding control signals; the sensor module is used for collecting detection signals; the main control module is used for converting the detection signal into an electric signal in a preset form according to the control signal. Therefore, the capacitive key structure of the pressure transmitter is ensured not to fail as much as possible, and the key reliability of the pressure transmitter is improved. And false triggering or missed triggering can be prevented.

Description

Technical Field

[0001] The present application relates to the technical field of transmitters, and in particular to a pressure transmitter and a method for preventing accidental touch thereof. Background Art

[0002] Pressure transmitters can be used to detect the pressure of liquid and gas media, so they are widely used in many explosion-proof occasions.

[0003] Traditionally, because explosion-proof environments prohibit opening the cover, pressure transmitters have been designed with pushbuttons, such as magnetic and infrared sensors. Specifically, when a magnetic sensor is not pressed, the key cover is parallel to the magnet's magnetic field lines and, attracted by the magnetic force, remains above the magnet. When the key is pressed, the magnetic field lines of the key cover and the magnet become perpendicular, reducing the magnetic force and pushing the key cover toward the key switch, triggering the key. Infrared sensors work by transmitting and receiving infrared signals to detect and trigger the key. Specifically, when the key is not triggered, the infrared receiver is in a static state, receiving infrared signals but unable to detect the presence of the key. When the key is pressed, the infrared transmitter transmits a specific infrared signal to the infrared receiver. The infrared receiver converts the infrared signal into an electrical signal and sends it to the control circuit for processing, thereby triggering the key.

[0004] However, magnetic buttons are susceptible to environmental factors such as temperature and vibration. Especially in high-temperature environments, the magnetic force of the magnetic material can weaken or even disappear, resulting in reduced button triggering performance. Infrared sensor buttons are highly dependent on ambient light and are easily affected by light interference, which can easily lead to false triggering or missed triggering. Summary of the Invention

[0005] Based on this, it is necessary to provide a pressure transmitter and its anti-false-touch method that can improve the reliability of buttons and effectively reduce the possibility of false triggering in order to address the above technical problems.

[0006] In the first aspect, the present application provides a pressure transmitter, a window cover module, a capacitive button module, a main control module, an electronic compartment module, a blind cover module and a sensor module, wherein the capacitive button module and the main control module are arranged in the accommodating cavity of the electronic compartment module; the electronic compartment module includes a first connection port, a second connection port and a third connection port, the first connection port is connected to the blind cover module, the second connection port is connected to the window cover module, and the third connection port is connected to the sensor module; the window cover module is installed on the upper end surface of the capacitive button module, and the lower end surface of the capacitive button module is connected to the main control module; the internal circuit of the main control module is electrically connected to the sensor module, the electronic compartment module, and the capacitive button module respectively; the blind cover module is used to seal the third connection port of the electronic compartment module, and / or is used as a spare interface; wherein,

[0007] The window cover module is used to transmit external pressure signals to the capacitive button module;

[0008] The capacitive key module is used to receive pressure signals for different key positions and convert the pressure signals into corresponding control signals;

[0009] The sensor module is used to collect detection signals;

[0010] The main control module is used to receive the control signal transmitted by the capacitive button module and the detection signal from the sensor module, and convert the detection signal into an electrical signal in a preset form according to the control signal.

[0011] In one embodiment, the capacitive button module includes: a display screen PCB module, and the display screen PCB module is used to display various function buttons.

[0012] In one embodiment, the display screen PCB module includes: a display screen PCB, a display screen, and a spring capacitor button;

[0013] The display screen includes a plurality of clips, and the positions of the clips correspond to the positions of the respective slots on the display screen PCB. The display screen PCB is electrically connected to the display screen via a power strip. The spring capacitor button is connected to the display screen PCB via soldering.

[0014] In one embodiment, the capacitive key module further includes: a key film, a gold-plated copper sheet, a key fixing bracket and a screen fixing bracket; the key film is attached to the key fixing bracket, and the two gold-plated copper sheets are respectively placed in the two cylindrical guide holes of the key fixing bracket, and the two gold-plated copper sheets are adhered by the adhesive backing of the key film; the key fixing bracket module is also mounted on the screen fixing bracket by a buckle; each key symbol is provided on the key film to identify the function of each key; wherein,

[0015] The button fixing bracket module can slide through the guide hole of the button fixing bracket and the hollow guide hole on the screen fixing bracket; the gold-plated copper sheet on the button fixing bracket module is supported by the spring capacitor button, so as to move back and forth in a straight line and rebound under the action of the spring capacitor button.

[0016] In one embodiment, the window cover module includes: a threaded pressure ring, an end cover sealing ring, a glass mirror, a mirror sealing ring and a window cover, wherein the mirror sealing ring is located in a sealing groove of the window cover; wherein,

[0017] The threaded pressure ring is used to fasten the glass sight glass to the window cover;

[0018] The end cover sealing ring is sleeved on the window cover and is used for sealing the window cover.

[0019] In one embodiment, the sensor module is fastened to the third connection port of the electronic compartment module via a thread; the capacitive button module is engaged with the main control module and fastened to the electronic compartment module via a screw;

[0020] The blind cover module is fastened to the first connection port of the electronic compartment module via threads, and the window cover module is fastened to the second connection port of the electronic compartment module via threads.

[0021] In one embodiment, the capacitance value of the capacitive button module is related to the sensitivity and response speed of the capacitive button module.

[0022] In a second aspect, the present application further provides a method for preventing accidental touch of a pressure transmitter, which is applied to the pressure transmitter described in any one of the first aspects, and the method includes:

[0023] In response to a first touch operation on the window cover module, displaying a prompt message on the display screen of the capacitive button module indicating whether the window cover module is unlocked;

[0024] When a preset first trigger event is met, controlling the display screen of the capacitive button module to enter a screen-off state;

[0025] When a preset second trigger event is met, the capacitive key module is controlled to enter the next stage of operation;

[0026] After entering the next stage of operation, if there is no operation within a preset time period, the display screen of the capacitive key module is controlled to enter the screen-off state.

[0027] In one embodiment, the first touch operation includes: pressing the target key for a duration greater than a preset threshold;

[0028] The preset first trigger event includes: receiving a touch operation on a key other than the target key, or no operation within a preset time period.

[0029] In one embodiment, the preset second trigger event includes: the pressing duration of the target key is not greater than a preset threshold.

[0030] The above-mentioned pressure transmitter and its anti-false touch method are provided by setting a pressure transmitter including a window cover module, a capacitive button module, a main control module, an electronic compartment module, a blind cover module and a sensor module. The capacitive button module and the main control module are arranged in the accommodating cavity of the electronic compartment module; the electronic compartment module includes a first connection port, a second connection port and a third connection port, the first connection port is connected to the blind cover module, the second connection port is connected to the window cover module, and the third connection port is connected to the sensor module; the window cover module is installed on the upper end surface of the capacitive button module, and the lower end surface of the capacitive button module is connected to the main control module; the interior of the main control module The circuit is electrically connected to the sensor module, the electronic compartment module, and the capacitive key module respectively; the blind cover module is used to seal the third connection port of the electronic compartment module and / or serve as a backup interface; the window cover module is used to transmit external pressure signals to the capacitive key module; the capacitive key module is used to receive pressure signals for different key positions and convert the pressure signals into corresponding control signals; the sensor module is used to collect detection signals; the main control module is used to receive the control signal transmitted by the capacitive key module and the detection signal from the sensor module, and convert the detection signal into a preset electrical signal according to the control signal. This ensures that the capacitive key structure of the pressure transmitter does not fail as much as possible and improves the reliability of the pressure transmitter's keys; flexible touch operations can also be performed by touching the window cover module, preventing false triggering or missed triggering while simplifying the operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0031] In order to more clearly illustrate the technical solutions in the embodiments of the present application or related technologies, the following briefly introduces the drawings required for use in the embodiments of the present application or related technical descriptions. Obviously, the drawings described below are only some embodiments of the present application. For ordinary technicians in this field, other related drawings can be obtained based on these drawings without paying any creative work.

[0032] Figure 1 This is a schematic structural diagram of a pressure transmitter provided in one embodiment of the present application;

[0033] Figure 2 This is a structural diagram of a display screen PCB module of a capacitive button module provided in one embodiment of the present application;

[0034] Figure 3 This is a structural diagram of a capacitive button module provided in one embodiment of the present application;

[0035] Figure 4 This is a structural diagram of a window cover module provided in one embodiment of the present application;

[0036] Figure 5 This is a schematic structural diagram of an installed pressure transmitter provided in one embodiment of the present application;

[0037] Figure 6 Schematic diagram of the flow of the method for preventing accidental touch of a pressure transmitter provided in one embodiment of the present application. DETAILED DESCRIPTION

[0038] The present invention will be described in detail below with reference to specific embodiments. The following embodiments will help those skilled in the art to further understand the present invention, but are not intended to limit the present invention in any form. It should be noted that, for those skilled in the art, several variations and improvements can be made without departing from the scope of the present invention. These all fall within the scope of protection of the present invention.

[0039] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or indirectly connected to the other element. In addition, the term "connected" can be used for both fixing and circuit connection.

[0040] It should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing the embodiments of the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operate in a specific orientation, and therefore cannot be understood as limiting the present invention.

[0041] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of such features. In the description of the embodiments of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0042] To facilitate understanding of the solutions in various embodiments of this application, the following brief description of the professional terms that may appear in this application is given:

[0043] Capacitive touch button: a button based on the principle of capacitance change.

[0044] Capacitance: refers to the amount of charge stored between conductors.

[0045] Illustratively, an embodiment of the present application provides a pressure transmitter, which may include: a window cover module, a capacitive button module, a main control module, an electronic compartment module, a blind cover module and a sensor module, wherein the capacitive button module and the main control module are arranged in the accommodating cavity of the electronic compartment module; the electronic compartment module includes a first connection port, a second connection port and a third connection port, wherein the first connection port is connected to the blind cover module, the second connection port is connected to the window cover module, and the third connection port is connected to the sensor module; the window cover module is installed on the upper end face of the capacitive button module, and the lower end face of the capacitive button module is connected to the main control module; the internal circuit of the main control module is divided into The blind cover module is used to seal the third connection port of the electronic compartment module and / or serve as a backup interface; wherein the window cover module is used to transmit the external pressure signal to the capacitive button module; the capacitive button module is used to receive the pressure signal for different button positions and convert the pressure signal into a corresponding control signal; the sensor module is used to collect the detection signal; the main control module is used to receive the control signal transmitted by the capacitive button module and the detection signal from the sensor module, and convert the detection signal into an electrical signal in a preset form according to the control signal.

[0046] The pressure transmitter in the embodiment of the present application can be used in explosion-proof occasions and does not require opening the cover for operation. It adopts the form of a capacitive touch key, and uses the touch window cover module to transmit the pressure signal to the capacitive button module, thereby simplifying the overall structure and simplifying the operation. The capacitive button module can ensure that the button structure does not fail as much as possible, thereby improving the reliability of the pressure transmitter.

[0047] Optionally, Figure 1 This is a schematic diagram of the structure of a pressure transmitter provided in one embodiment of the present application, as shown in FIG. Figure 1 As shown, the device may include: a window cover module 1, a capacitive button module 2, a main control module 3, an electronics compartment module 4, a blind cover module 5, and a sensor module 6. The electronics compartment module 4 is a T-shaped tubular structure with three main connection ports. The capacitive button module 2 and the main control module 3 are housed within the housing of the electronics compartment module 4. The window cover module 1 and the blind cover module 5 respectively seal two connection ports of the electronics compartment module 4. The sensor module 6 is connected to the remaining connection port.

[0048] Exemplarily, the capacitive button module includes a display PCB (Printed Circuit Board) module, which is used to display the various function buttons. Optionally, the display PCB module includes a display PCB, a display, and spring-loaded capacitive buttons. The display includes multiple clips, the positions of which correspond to the positions of the slots on the display PCB. The display PCB is electrically connected to the display via a power strip. The spring-loaded capacitive buttons are connected to the display PCB via soldering.

[0049] Figure 2 This is a structural diagram of a display screen PCB module of a capacitive key module provided in an embodiment of the present application. Figure 2 As shown, the display PCB module mainly consists of display PCB 2-5-1, display 2-5-2, and spring capacitor buttons 2-5-3. Display 2-5-2 is fixed to the slot on display PCB 2-5-1 by a clip, and display PCB 2-5-1 is connected to display PCB 2-5-1 via a power strip. The two spring capacitor buttons 2-5-3 are connected to display PCB 2-5-1 by soldering.

[0050] The embodiment of the present application can ensure that there is no interference between keys to the greatest extent through the structure, and the production cost is low.

[0051] Exemplarily, the capacitive button module also includes: a button film, a gold-plated copper sheet, a button fixing bracket and a screen fixing bracket; the button film is affixed to the button fixing bracket, and the two gold-plated copper sheets are respectively placed in the two cylindrical guide holes of the key fixing bracket, and the two gold-plated copper sheets are adhered by the adhesive backing of the button film; the button fixing bracket module is also installed on the screen fixing bracket by a snap; various button symbols are provided on the button film to identify the functions of each button; wherein, the button fixing bracket module can slide through the guide holes of the button fixing bracket and the hollow guide holes on the screen fixing bracket; the gold-plated copper sheet on the button fixing bracket module is supported by the spring capacitor button, so as to move back and forth in a straight line and rebound under the action of the spring capacitor button.

[0052] Figure 3 This is a structural diagram of a capacitive key module provided in an embodiment of the present application. Figure 3 As shown, the capacitive button module mainly includes: a button film 2-1, a gold-plated copper sheet 2-2, a button fixing bracket 2-3, a screen fixing bracket 2-4, a display PCB module 2-5, and display PCB fixing screws 2-6. During assembly: First, stick the button film 2-1 on the button fixing bracket 2-3, then place the two gold-plated copper sheets 2-2 into the two cylindrical guide holes of the button fixing bracket 2-3 (the guide holes are through holes). The two gold-plated copper sheets 2-2 are adhered by the adhesive backing of the button film 2-1 to form the button fixing bracket module. Then, the button fixing bracket module is inserted into the four slots of the screen fixing bracket 2-3 using four clips. At this time, the button fixing bracket module can slide through the guide holes of its button fixing bracket 2-3 and the hollow guide holes on the screen fixing bracket 2-4 (which not only serve as a sliding element but also play the role of circumferential limit for the spring capacitor button 2-5-3, minimizing interference between the two buttons). Next, place the display PCB module 2-5 into the assembly from the previous step and secure it with the display PCB mounting screws. At this point, the capacitive button module is assembled. The gold-plated copper sheet 2-2 on the button mounting bracket module is supported by the spring-loaded capacitor button 2-5-3. Due to the elasticity of the spring-loaded capacitor button 2-5-3, pressing the button mounting bracket module causes it to reciprocate in a straight line and rebound. Furthermore, the button film 2-1 is provided with button symbols to clearly indicate the button's function.

[0053] In the embodiment of the present application, through the special structural form of the button fixing bracket and the screen fixing bracket, the spring capacitor button is circumferentially limited when the window cover assembly is tightened and deformed, ensuring that the two buttons will not slip and displace during deformation, thereby avoiding failure of the button structure to the greatest extent, ensuring the position between the two spring capacitor buttons, and avoiding interference between the two spring capacitor buttons.

[0054] In addition, a capacitive touch button is arranged to fit the glass mirror on the window cover assembly, so that the change in its capacitance value can be detected directly by pressing the glass mirror with a finger to realize its button function. This change can be detected and decoded by the circuit.

[0055] Exemplarily, the window cover module includes: a threaded pressure ring, an end cover sealing ring, a glass mirror, a mirror sealing ring and a window cover, wherein the mirror sealing ring is located in a sealing groove of the window cover; wherein the threaded pressure ring is used to fasten the glass mirror to the window cover; and the end cover sealing ring is sleeved on the window cover to seal the window cover.

[0056] Exemplarily, the sensor module is fastened to the third connection port of the electronic compartment module through threads; the capacitive button module is engaged with the main control module and fastened to the electronic compartment module through screws; the blind cover module is fastened to the first connection port of the electronic compartment module through threads, and the window cover module is fastened to the second connection port of the electronic compartment module through threads.

[0057] Figure 4 This is a structural diagram of a window cover module provided in one embodiment of the present application. Figure 4 As shown, the window cover module mainly includes: threaded pressure ring 1-1, end cover sealing ring 1-2, glass sight glass 1-3, sight glass sealing ring 1-4 and window cover 1-5. During assembly, first place sight glass sealing ring 1-4 into the sealing groove of window cover 1-5, then place glass sight glass 1-3, screw on threaded pressure ring 1-1, and finally put on end cover sealing ring 1-2.

[0058] Figure 5 This is a schematic diagram of the structure of the installed pressure transmitter provided in one embodiment of the present application, as shown in FIG. Figure 5 As shown, the specific assembly relationship is as follows: First, the sensor module 6 is connected to the electronic compartment module 4 via threads. Then, the capacitive button module 2 and the main control module 3 are inserted and connected to the electronic compartment module 4 via screws. Finally, the blind cover module 5 is connected to the window cover module 1 via threads. Among them, the circuits of the sensor module 6, electronic compartment module 4, capacitive button module 2, and main control module 3 are connected by wires.

[0059] Illustratively, the capacitance value of the capacitive button module is related to the sensitivity and response speed of the capacitive button module.

[0060] In the embodiment of the present application, the capacitive key module 2, due to its special structure, can support the glass mirrors 1-3 on the window cover module 1. The key function can be realized by pressing the glass mirrors with a finger. When designing a capacitive key, the capacitance value can be calculated using the following formula:

[0061] C=ε*A / d

[0062] Where C is the capacitance value in farads (F); ε is the dielectric constant (which varies depending on the medium used); A is the electrode area in square meters (m2). 2 );d is the distance between electrodes, in meters (m).

[0063] It's important to understand that the capacitance of capacitive buttons requires calculation, as its size directly impacts their sensitivity and response speed. Therefore, when designing capacitive buttons, you need to select an appropriate capacitance value based on the desired sensitivity and response speed, and calculate the corresponding electrode area and inter-electrode distance using a formula.

[0064] Illustratively, an embodiment of the present application further provides a method for preventing accidental touch of a pressure transmitter, which is applied to the above-mentioned pressure transmitter, and the method includes:

[0065] Step S1: In response to a first touch operation on the window cover module, a prompt message indicating whether to unlock is displayed on the display screen of the capacitive key module.

[0066] Step S2: When a preset first trigger event is met, the display screen of the capacitive button module is controlled to enter a screen-off state.

[0067] Step S3: When a preset second trigger event is satisfied, the capacitive key module is controlled to enter the next stage of operation.

[0068] Step S4: After entering the next stage of operation, if there is no operation within a preset time period, the display screen of the capacitive key module is controlled to enter the screen-off state.

[0069] Exemplarily, the first touch operation includes: a target key is pressed for a duration greater than a preset threshold.

[0070] In an embodiment of the present application, the target button may be a switch button. When the duration of pressing the switch button through the window cover module exceeds a preset threshold (e.g., 2-3 seconds), it is considered a normal touch operation, not a false trigger.

[0071] Optionally, the preset first trigger event includes: receiving a touch operation on a key other than the target key, or no operation within a preset time period.

[0072] In the embodiment of the present application, a preset first trigger event can be used to further determine whether it is a false trigger. Only when the preset first trigger event is met will the pressure transmitter enter the next stage.

[0073] Exemplarily, the preset second trigger event includes: the pressing duration of the target key is not greater than a preset threshold.

[0074] It should be understood that the embodiment of the present application does not limit the specific method of the preset second trigger event. In addition to a short press, it can also be a double-click, a slide, a single click, etc.

[0075] Optionally, Figure 6 FIG. 1 is a flow chart of a method for preventing accidental touch of a pressure transmitter provided in an embodiment of the present application, as shown in FIG. Figure 6 As shown, first find the "O" key position corresponding to the window cover module. Press and hold the "O" key for 2-3 seconds. The capacitive key module's display will show: Unlock? If it is unlocked, continue to short-press the "O" key position to enter the next stage of operation. If there is no operation within 10 seconds, the screen will enter the off state. If it is not unlocked, press other keys or do not operate anything to enter the off state.

[0076] In this embodiment of the application, the capacitive keypad can also be protected from accidental touches by setting a password and adding a long press time delay to unlock. This feature has excellent anti-accidental touch performance and can minimize the possibility of accidental touches.

[0077] The above is the core idea of ​​the present invention. In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0078] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same and similar parts between the various embodiments can be referred to each other. The above description of the disclosed embodiments enables professionals and technicians in this field to implement or use the present invention. Various modifications to these embodiments will be apparent to professionals and technicians in this field, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

[0079] The above describes the specific embodiments of the present invention. It should be understood that the present invention is not limited to the above specific embodiments, and those skilled in the art may make various variations or modifications within the scope of the claims, which do not affect the essence of the present invention.

Claims

1. A pressure transmitter, characterized in that: include: A window cover module, a capacitive button module, a main control module, an electronic compartment module, a blind cover module and a sensor module, wherein the capacitive button module and the main control module are arranged in the accommodating cavity of the electronic compartment module; the electronic compartment module includes a first connection port, a second connection port and a third connection port, the first connection port is connected to the blind cover module, the second connection port is connected to the window cover module, and the third connection port is connected to the sensor module; the window cover module is installed on the upper end surface of the capacitive button module, and the lower end surface of the capacitive button module is connected to the main control module; the internal circuit of the main control module is electrically connected to the sensor module, the electronic compartment module, and the capacitive button module respectively; the blind cover module is used to seal the third connection port of the electronic compartment module, and / or is used as a spare interface; wherein, The window cover module is used to transmit external pressure signals to the capacitive button module; The capacitive key module is used to receive pressure signals for different key positions and convert the pressure signals into corresponding control signals; The sensor module is used to collect detection signals; The main control module is used to receive the control signal transmitted by the capacitive button module and the detection signal from the sensor module, and convert the detection signal into an electrical signal in a preset form according to the control signal.

2. The pressure transmitter according to claim 1, characterized in that: The capacitive button module includes: a display screen PCB module, and the display screen PCB module is used to display various function buttons.

3. The pressure transmitter according to claim 2, characterized in that: The display screen PCB module includes: a display screen PCB, a display screen and a spring capacitor button; The display screen includes a plurality of clips, and the positions of the clips correspond to the positions of the respective slots on the display screen PCB. The display screen PCB is electrically connected to the display screen via a power strip. The spring capacitor button is connected to the display screen PCB via soldering.

4. The pressure transmitter according to claim 3, characterized in that: The capacitive key module further includes: a key film, a gold-plated copper sheet, a key fixing bracket and a screen fixing bracket; the key film is attached to the key fixing bracket, and the two gold-plated copper sheets are respectively placed in the two cylindrical guide holes of the key fixing bracket, and the two gold-plated copper sheets are adhered by the adhesive backing of the key film; the key fixing bracket module is also mounted on the screen fixing bracket by a buckle; each key symbol is provided on the key film to identify the function of each key; wherein, The button fixing bracket module can slide through the guide hole of the button fixing bracket and the hollow guide hole on the screen fixing bracket; the gold-plated copper sheet on the button fixing bracket module is supported by the spring capacitor button, so as to move back and forth in a straight line and rebound under the action of the spring capacitor button.

5. The pressure transmitter according to any one of claims 1 to 4, characterized in that: The window cover module includes: a threaded pressure ring, an end cover sealing ring, a glass mirror, a mirror sealing ring and a window cover, wherein the mirror sealing ring is located in a sealing groove of the window cover; wherein, The threaded pressure ring is used to fasten the glass sight glass to the window cover; The end cover sealing ring is sleeved on the window cover and is used for sealing the window cover.

6. The pressure transmitter according to any one of claims 1 to 4, characterized in that: The sensor module is fastened to the third connection port of the electronic compartment module via a thread; the capacitive button module is engaged with the main control module and fastened to the electronic compartment module via a screw; The blind cover module is fastened to the first connection port of the electronic compartment module via threads, and the window cover module is fastened to the second connection port of the electronic compartment module via threads.

7. The pressure transmitter according to any one of claims 1 to 4, characterized in that: The capacitance value of the capacitive button module is related to the sensitivity and response speed of the capacitive button module.

8. A method for preventing accidental touch of a pressure transmitter, characterized in that: Applied to the pressure transmitter according to any one of claims 1 to 7, the method comprises: In response to a first touch operation on the window cover module, displaying a prompt message on the display screen of the capacitive button module indicating whether the window cover module is unlocked; When a preset first trigger event is met, controlling the display screen of the capacitive button module to enter a screen-off state; When a preset second trigger event is met, the capacitive key module is controlled to enter the next stage of operation; After entering the next stage of operation, if there is no operation within a preset time period, the display screen of the capacitive key module is controlled to enter the screen-off state.

9. The method for preventing accidental touch of a pressure transmitter according to claim 8, characterized in that: The first touch operation includes: pressing the target key for a duration greater than a preset threshold; The preset first trigger event includes: receiving a touch operation on a key other than the target key, or no operation within a preset time period.

10. The method for preventing accidental touch of a pressure transmitter according to claim 8, characterized in that: The preset second trigger event includes: the pressing time of the target key is not greater than a preset threshold.

Images