Intrinsically safe self-powered wireless button switch

Abstract

An intrinsically safe self-powered wireless button switch disclosed by the present invention comprises a switch shell, a button and a visual window are arranged on the surface of the switch shell, a wireless signal transceiver, a power generation module and a power generation trigger module are arranged in the switch shell, and the button is connected with the power generation trigger module. When the button is pressed down, the power generation module is started to emit a period of direct-current voltage, and the period of direct-current voltage is provided for the wireless signal transceiver to perform primary switching signal exchange with remote equipment; the wireless signal transceiver outputs three kinds of signals to control a three-color LED lamp according to three states of successful receiving of a receiving signal sent by the far-end equipment, weak receiving of the signal and no receiving of the signal of the far-end equipment, and the three-color LED lamp outputs light of three different colors through a visual window; wherein the power generation module is an intrinsic safety type power generation module which is sealed in a sealed shell and is formed by pouring an insulating material.

Description

Technical Field

[0001] The invention relates to an intrinsically safe self-powered wireless push button switch. Background Art

[0002] At present, underground coal mine signal collection, equipment emergency stop control, damper opening and closing control, etc. are all solved by the lead-in method, which requires that the location of each device must be planned in detail and accurately before installation, and that cable trenches must be pre-buried on the wall and cables must be threaded, which is not only time-consuming and labor-intensive, but also wastes materials. More importantly, if the layout is found to be unsatisfactory and needs to be moved or changed, the wall must be re-drilled and wired, otherwise it cannot be changed. For this reason, radio frequency remote control is also used in the prior art, but most of the remote controls in the prior art are powered by batteries, which will produce harmful substances to pollute the environment, and battery undervoltage will cause safety hazards. It is very troublesome to disassemble the remote control to replace the battery. Summary of the invention

[0003] In view of the above problems, an object of the present invention is to provide an intrinsically safe self-powered wireless push button switch.

[0004] In order to achieve the above object, the scheme of the present invention is: An intrinsically safe self-powered wireless push button switch comprises a switch housing, a button and a visual window are arranged on the surface of the switch housing, wherein: a wireless signal transceiver, a power generation module and a power generation trigger module are arranged in the switch housing, the button is connected to the power generation trigger module, and when the button is pressed, the power generation trigger module starts the power generation module to emit a DC voltage for a period of time, and the DC voltage for a period of time provides a wireless signal transceiver to exchange a switch signal with a remote device, and the wireless signal transceiver outputs three signals to control a three-color LED lamp according to three states of receiving a successful reception signal, a weak reception signal and no reception of a remote device signal from the remote device, and the three-color LED lamp outputs three different colors of light through the visual window; wherein: the power generation module is an intrinsically safe power generation module enclosed in a closed housing and formed by pouring insulating material.

[0005] The scheme is further as follows: the intrinsically safe power generation module includes an "E"-shaped magnetic core and a voltage-limiting and current-limiting protection board insulated and fixed in a closed shell by pouring insulating material, a coil is wound on the middle magnetic arm of the "E"-shaped magnetic core, the middle magnetic arm extends out of the closed shell to alternately contact the N and S permanent magnet electrodes of the power generation trigger module to pass an alternating magnetic field, the alternating magnetic field generates an induced current output in the coil, a half-wave rectification and filtering circuit is arranged on the voltage-limiting and current-limiting protection board, the coil is connected to the half-wave rectification and filtering circuit on the voltage-limiting and current-limiting protection board, the half-wave rectification and filtering circuit rectifies and filters the induced current output to eliminate the overvoltage peak value to form a DC voltage of a certain period of time, which is led out from the closed shell through two wires, and the led-out DC voltage is connected to the wireless signal transceiver.

[0006] The solution is further that: the DC voltage for a period of time is a DC voltage with a duration of not less than 0.5 seconds.

[0007] A further solution is: the wireless signal transceiver is a radio frequency signal transceiver, and the radio frequency signal transceiver and the three-color LED lamp are arranged on a circuit board.

[0008] The scheme is further as follows: the power generation trigger module includes a "U"-shaped permanent magnet and a drive component, the drive component is connected to the button, the straight arms on both sides of the open end of the "U"-shaped permanent magnet are respectively a magnetic N pole and a magnetic S pole, a clamping arm clamps the "U"-shaped permanent magnet from the closed end of the "U"-shaped permanent magnet, and maintains the open state of the open end of the "U"-shaped permanent magnet, the clamping arm is fixed in the switch housing through a rotating shaft at the closed end of the "U"-shaped permanent magnet, the clamping arm is extended outward from the rotating shaft and is provided with a lever arm, and the middle magnetic arm extending out of the closed housing is placed on both sides of the open end of the "U"-shaped permanent magnet Between the magnetic N pole and the magnetic S pole, the arm extends into the driving component and is controlled by the driving component to be moved up and down so that the open end of the "U"-shaped permanent magnet rotates up and down with the rotating shaft as the center to form a seesaw. The up and down rotating open end of the "U"-shaped permanent magnet makes the magnetic N pole and the magnetic S pole contact alternately with the middle magnetic arm extending out of the closed shell, forming an N / S alternating magnetic field that is alternately input to the "E"-shaped magnetic core; in the initial state where the button is not pressed, one magnetic pole at the open end of the "U"-shaped permanent magnet is attracted and touched by the middle magnetic arm, and pressing the button only performs one alternating input of the magnetic field of the DC voltage of the period of time.

[0009] The scheme is further as follows: the driving assembly includes a first driving block, a second driving block, a reset spring and an accelerating push spring, the first driving block is a frame structure, the outer ends of both sides of the first driving block can be moved up and down through slideways to be positioned in the switch housing, the upper end of the first driving block is connected to the button, the reset spring is arranged between the bottom end surface of the first driving block and the bottom plate inside the switch housing, a step is arranged in the middle of the first driving block, the arm extending into the driving assembly rests on the step, the second driving block is arranged on the arm resting on the step in the frame structure of the first driving block, and the accelerating push spring is arranged between the second driving block and the top plate on the frame structure; press the button, The first driving block moves downward. In the initial stage of the downward movement of the first driving block, the lever arm does not move downward because one magnetic pole and the middle magnetic arm are attracted to each other in the initial state. As the first driving block moves downward, the acceleration push spring is compressed and pushes the second driving block to press against the lever arm. As the first driving block continues to move downward, when the downward pressure of the second driving block is greater than the suction force between one magnetic pole and the middle magnetic arm, the compressed acceleration push spring releases the compression energy and pushes the lever arm downward to make the other magnetic pole and the middle magnetic arm attract each other, thereby realizing the alternating input of a magnetic field to the middle magnetic arm. After releasing the button, the reset spring pushes the first driving block upward to drive the lever arm to reset to the initial state where the button is not pressed.

[0010] A further solution is that the acceleration push spring has such elasticity that after the acceleration push spring is compressed, it can quickly push the other magnetic pole to contact and attract the middle magnetic arm after one magnetic pole is out of contact with the middle magnetic arm.

[0011] The beneficial effects of the present invention are: 1. Compact structure, no battery required; 2. It adopts independent seesaw magnetic circuit power generation, and the explosion-proof design eliminates the potential safety hazards to underground production caused by overvoltage peaks in power generation; 3. Long service life and high reliability; 4. It can be used in humid environments or places that require explosion-proof.

[0012] The present invention is described in detail below with reference to the accompanying drawings and embodiments. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a schematic diagram of the structure appearance of the present invention; Figure 2 It is a schematic diagram of the logic relationship of the circuit of the present invention; Figure 3 is a schematic diagram of a power generation module of the present invention; Figure 4 is a schematic diagram of a power generation trigger module of the present invention; Figure 5It is a schematic diagram of the driving relationship of the power generation trigger module of the present invention, including Figure 4 AA view; Figure 6 It is a further schematic diagram of the driving relationship of the power generation trigger module of the present invention. DETAILED DESCRIPTION

[0014] An intrinsically safe self-powered wireless push button switch, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 and Figure 6 As shown, the wireless push button switch includes a switch housing 1, and a button 2 and a visual window 101 are arranged on the surface of the switch housing, wherein: a wireless signal transceiver 3, a power generation module and a power generation trigger module 4 are arranged in the switch housing 1, the button 2 is connected to the power generation trigger module 4, and when the button 2 is pressed, the power generation trigger module 4 starts the power generation module to emit a DC voltage for a period of time, and the DC voltage for a period of time provides the wireless signal transceiver 3 with a remote device (the remote device is not shown, and the remote device also has a wireless signal transceiver) to exchange a switch signal, and the wireless signal transceiver 3 outputs three signals to control a three-color LED lamp 5 according to the three states of receiving a successful reception signal, a weak reception signal and no reception of a remote device signal from the remote device, and the three-color LED lamp 5 is placed under the visual window 101 and outputs three different colors of light (green for successful reception of a signal, yellow for weak reception of a signal, and red for no reception of a remote device signal) through the visual window 101; wherein: since the power generation module adopts pulse power generation, the voltage emitted will instantly reach tens of volts, which will bring safety hazards to underground operations, therefore, as Figure 2 and Figure 3As shown, the power generation module is an intrinsically safe power generation module 6 enclosed in a closed shell 601 and formed by pouring insulating material 602; the intrinsically safe power generation module 6 includes an "E"-shaped magnetic core 603 and a voltage-limiting and current-limiting protection plate 604 insulated and fixed by pouring insulating material 602 in the closed shell 601, and a coil 605 is wound on the middle magnetic arm 603-1 of the "E"-shaped magnetic core, and the middle magnetic arm 603-1 extends out of the closed shell 601 to alternately contact the N and S permanent magnetic electrodes of the power generation trigger module to receive the alternating magnetic field introduced, and the alternating magnetic field introduced generates an induced current output in the coil 605, and a half-wave rectifier filter circuit 604-1 is arranged on the voltage-limiting and current-limiting protection plate 604, and the coil 605 is connected to the half-wave rectifier filter circuit 604-1 on the voltage-limiting and current-limiting protection plate. The half-wave rectifier filter circuit 604-1 includes a rectifier diode D1, the positive electrode of the rectifier diode D1 is connected to one end of the coil 605, the negative electrode of the rectifier diode D1 is connected to one end of the filter capacitor C1, the other end of C1 is connected to the other end of the coil 605, the two ends of the capacitor C1 are connected to the wireless signal transceiver 3 as the output of the power supply, and a discharge protection resistor R of more than 100k ohms is connected to both ends of the capacitor C1. At the same time, in order to eliminate the reverse induced voltage of the coil 605, a discharge diode D2 is connected between the positive electrode of the rectifier diode D1 and the other end of the coil 605, the negative electrode of the discharge diode D2 is connected to the positive electrode of the rectifier diode D1, and the positive electrode of the discharge diode D2 is connected to the other end of the coil 605. The number of windings of the coil 605 ensures that the half-wave rectifier filter circuit 604-1 outputs the induced current to rectify and filter to eliminate the overvoltage peak value to form a DC voltage of a period of time, and the DC voltage is led out from the closed shell 601 of the intrinsically safe power generation module 6 through the positive and negative wires, and the led DC voltage is connected to the wireless signal transceiver 3.

[0015] Wherein: the DC voltage of a certain period of time is a DC voltage of a duration of not less than 0.5 seconds, and the DC voltage of 0.5 seconds is sufficient to ensure that the wireless signal transceiver 3 performs a switch signal exchange with the remote device.

[0016] The wireless signal transceiver 3 is a radio frequency signal transceiver, and of course it can also be a 4G or 5G signal transceiver. The radio frequency signal transceiver 5 and the three-color LED light 5 are arranged on a circuit board in a switch housing 1 at the lower end of the visual window 101.

[0017] like Figure 4 and Figure 5As shown: the power generation trigger module 4 includes a "U"-shaped permanent magnet 401 and a drive component, the drive component is connected to the button 2, the straight arms on both sides of the open end of the "U"-shaped permanent magnet 401 are respectively a magnetic N pole and a magnetic S pole, a clamping arm 402 clamps the "U"-shaped permanent magnet from the closed end of the "U"-shaped permanent magnet 401, and maintains the open state of the open end of the "U"-shaped permanent magnet 401, the clamping arm 402 is fixed in the switch housing 1 through a rotating shaft 403 at the closed end of the "U"-shaped permanent magnet 401, the clamping arm 402 extends outward from the rotating shaft 403 and is provided with a lever arm 404, the middle magnetic arm 603-1 of the closed housing 601 extending out of the intrinsically safe power generation module 6 is placed on the "U"-shaped permanent magnet 4 01, between the magnetic N pole and the magnetic S pole on both sides of the open end, the arm 404 extends into the driving component and is controlled by the driving component to be moved up and down so that the open end of the "U"-shaped permanent magnet 401 rotates up and down with the rotating shaft 403 as the center to form a seesaw, and the magnetic N pole and magnetic S pole on both sides of the open end of the "U"-shaped permanent magnet 401 that rotates up and down alternately contact with the middle magnetic arm 603-1 extending out of the closed shell, forming an N / S magnetic field that is alternately input to the "E"-shaped magnetic core 603; in the initial state where the button 2 is not pressed, one magnetic pole (N pole or S pole) at the open end of the "U"-shaped permanent magnet 401 is attracted and touched with the middle magnetic arm 603-1, and pressing the button 3 only performs the alternating input of the magnetic field of the DC voltage of the period of time once.

[0018] like Figure 4 and Figure 5 As shown: the driving assembly includes a first driving block 7, a second driving block 8, a return spring 9 and an acceleration push spring 10, as shown in Figure 4As shown, the first driving block 7 is a frame structure, and the outer ends of the two side columns 701 of the first driving block 7 can be moved up and down through the slide 101 to be positioned in the switch housing 1, the upper end of the first driving block 7 is connected to the button 2, and the reset spring 9 is arranged between the bottom end surface of the first driving block 7 and the inner bottom plate of the switch housing 1, and a step 702 is arranged in the middle of the first driving block 7, and the arm 404 extending into the driving assembly rests on the step 702. In the frame structure of the first driving block 7, the second driving block 8 is arranged on the arm 404 resting on the step 702, and the acceleration push spring 10 is arranged between the second driving block 8 and the upper top plate of the frame structure; press the button 2, the first driving block 7 moves downward, and when the first driving block 7 moves downward In the initial stage of movement, since one magnetic pole and the middle magnetic arm 603-1 are attracted to each other in the initial state, the lever arm 404 does not move downward accordingly; as the first driving block 7 continues to move downward, the acceleration push spring 10 is compressed and pushes the second driving block 8 to press against the lever arm 404. As the first driving block 7 continues to move downward, when the downward pressure of the second driving block 8 is greater than the suction force between one magnetic pole and the middle magnetic arm 603-1, the compressed acceleration push spring 10 releases the compression energy to push the lever arm 404 downward so that the other magnetic pole and the middle magnetic arm 603 are attracted to each other, thus realizing the alternating input of an alternating magnetic field to the middle magnetic arm 603; after the button 2 is released, the reset spring 9 pushes the first driving block 7 upward to drive the lever arm 404 to reset to the initial state where the button 2 is not pressed. Wherein: the elasticity of the acceleration push spring 10 is that after the acceleration push spring is compressed, after the one magnetic pole and the middle magnetic arm 603-1 are out of contact, it can quickly push the other magnetic pole to contact and attract the middle magnetic arm 603.

[0019] The arrangement of the second drive block 8 and the acceleration push spring 10 in the embodiment ensures that no matter how fast or slow the button 2 is pressed, a consistent thrust can be exerted by the second drive block 8 and the acceleration push spring 10 to push the lever arm 404, thereby ensuring the consistency of the induced current and voltage output of the coil 605 and ensuring the stability of the DC voltage for a period of time. Figure 6 It is shown that after the first driving block 7 is pressed down, the acceleration push spring 10 is compressed to a state close to release. Each time the first driving block 7 is pressed down, the compression of the acceleration push spring 10 is consistent, that is, it ensures that the thrust of the push arm 404 is consistent, thereby ensuring that the DC voltage for a period of time is stable for a long time.

[0020] Of course, this structure can also use the consistency of the rebound of the reset spring 9 as the alternating input of the magnetic field to ensure the stability of the DC voltage for a period of time, but if it is released slowly after being pressed manually, it will be unstable. Therefore, this embodiment adopts the structure of the first drive block 7 and the second drive block 8, the reset spring 9 and the acceleration push spring 10, and uses the consistency of the energy released by the acceleration push spring 10 to ensure the stability of the DC voltage for a period of time.

[0021] The above intrinsically safe self-powered wireless push button switch has a compact structure and does not require battery power. It adopts an independent seesaw magnetic circuit for power generation, and its explosion-proof design eliminates the potential safety hazards to underground mine production caused by overvoltage spikes in power generation. It has a long service life and high reliability.

Claims

1. An intrinsically safe self-powered wireless push button switch, comprising a switch housing, a button and a visual window being arranged on the surface of the switch housing, characterized in that: A wireless signal transceiver, a power generation module and a power generation trigger module are arranged in the switch housing. A button is connected to the power generation trigger module. When the button is pressed, the power generation trigger module starts the power generation module to emit a DC voltage for a period of time. The DC voltage for a period of time provides the wireless signal transceiver with a remote device to exchange a switch signal. The wireless signal transceiver outputs three signals to control a three-color LED lamp according to the three states of successful reception of the signal sent by the remote device, weak reception signal and no signal received from the remote device. The three-color LED lamp outputs three different colors of light through a visual window; wherein: the power generation module is an intrinsically safe power generation module enclosed in a closed housing and formed by pouring insulating material.

2. The push button switch according to claim 1, characterized in that: The intrinsically safe power generation module includes an "E"-shaped magnetic core and a voltage-limiting and current-limiting protection board insulated and fixed by pouring insulating materials in a closed shell, a coil is wound on the middle magnetic arm of the "E"-shaped magnetic core, the middle magnetic arm extends out of the closed shell to alternately contact the N and S permanent magnet electrodes of the power generation trigger module to pass an alternating magnetic field, the passed alternating magnetic field generates an induced current output in the coil, a half-wave rectification and filtering circuit is arranged on the voltage-limiting and current-limiting protection board, the coil is connected to the half-wave rectification and filtering circuit on the voltage-limiting and current-limiting protection board, the half-wave rectification and filtering circuit rectifies and filters the induced current output to eliminate the overvoltage peak value to form a DC voltage of a certain period of time, and is led out from the closed shell through two wires, and the led-out DC voltage is connected to the wireless signal transceiver.

3. The push button switch according to claim 1 or 2, characterized in that: The DC voltage of a certain period of time is a DC voltage with a duration of not less than 0.5 seconds.

4. The push button switch according to claim 1, characterized in that: The wireless signal transceiver is a radio frequency signal transceiver, and the radio frequency signal transceiver and the three-color LED lamp are arranged on a circuit board.

5. The push button switch according to claim 2, characterized in that: The power generation trigger module includes a "U"-shaped permanent magnet and a drive component, the drive component is connected to the button, the straight arms on both sides of the open end of the "U"-shaped permanent magnet are respectively a magnetic N pole and a magnetic S pole, a clamping arm clamps the "U"-shaped permanent magnet from the closed end of the "U"-shaped permanent magnet, and maintains the open state of the open end of the "U"-shaped permanent magnet, the clamping arm is fixed in the switch housing through a rotating shaft at the closed end of the "U"-shaped permanent magnet, the clamping arm extends outward from the rotating shaft and is provided with a lever arm, the middle magnetic arm extending out of the closed housing is placed on the magnetic N poles on both sides of the open end of the "U"-shaped permanent magnet and the magnetic S pole, the arm extends into the driving component and is controlled by the driving component to be moved up and down so that the open end of the "U"-shaped permanent magnet rotates up and down with the rotating shaft as the center to form a seesaw, and the up and down rotating open end of the "U"-shaped permanent magnet makes the magnetic N pole and the magnetic S pole contact alternately with the middle magnetic arm extending out of the closed shell, forming an N / S alternating magnetic field that is alternately input to the "E"-shaped magnetic core; in the initial state where the button is not pressed, one magnetic pole at the open end of the "U"-shaped permanent magnet is attracted and touched by the middle magnetic arm, and pressing the button only performs one time to form an alternating input of the magnetic field of the DC voltage of the period.

6. The push button switch according to claim 5, characterized in that: The driving assembly comprises a first driving block, a second driving block, a reset spring and an accelerating push spring, the first driving block is a frame structure, the outer ends of both sides of the first driving block can be moved up and down through slideways to be positioned in the switch housing, the upper end of the first driving block is connected to the button, the reset spring is arranged between the bottom end surface of the first driving block and the bottom plate inside the switch housing, a step is arranged in the middle of the first driving block, the arm extending into the driving assembly rests on the step, the second driving block is arranged on the arm resting on the step in the frame structure of the first driving block, and the accelerating push spring is arranged between the second driving block and the top plate on the frame structure; When the button is pressed, the first driving block moves downward. In the initial stage of the downward movement of the first driving block, the arm does not move downward because one magnetic pole and the middle magnetic arm are attracted to each other in the initial state. As the first driving block moves downward, the acceleration push spring is compressed and pushes the second driving block to press against the arm. As the first driving block continues to move downward, when the downward pressure of the second driving block is greater than the suction force between one magnetic pole and the middle magnetic arm, the compressed acceleration push spring releases the compression energy and pushes the arm downward to make the other magnetic pole and the middle magnetic arm attract each other, thereby realizing the alternating input of a magnetic field to the middle magnetic arm. After releasing the button, the reset spring pushes the first driving block upward to reset the arm to the initial state where the button is not pressed.

7. The push button switch according to claim 6, characterized in that: The acceleration push spring has such elasticity that after the acceleration push spring is compressed, it can quickly push the other magnetic pole to contact and attract the middle magnetic arm after one magnetic pole is out of contact with the middle magnetic arm.

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