Low-voltage air switch intelligent signboard device and development method thereof

Abstract

The invention discloses a low-voltage air switch intelligent nameplate device and a development method thereof, and the device comprises a housing; a plurality of hardware devices are installed in the shell and are connected according to a preset hardware circuit diagram; wherein the plurality of hardware devices at least comprise a touch password touch screen, an electromagnetic lock, a relay and a microcontroller; and the microcontroller executes pre-written program instructions to control and coordinate the work of the touch password touch screen, the relay and the electromagnetic lock so as to judge whether the electromagnetic lock is unlocked or not according to different input instructions. According to the invention, the occurrence of personal injury events caused by misoperation due to the fact that the power switch is switched on by mistake in the maintenance work of the power station unit equipment can be effectively restrained, the correctness of power switch operation is ensured, and the working safety of a maintenance site is improved.

Description

Technical Field

[0001] The invention relates to the technical field of hydropower generation, and in particular to a low-voltage circuit breaker intelligent sign device and a manufacturing method thereof. Background Art

[0002] In the maintenance of the power industry, hanging signs on the air switch after operation is an important safety technical guarantee measure. When the equipment of Sanghe Secondary Hydropower Station is shut down for maintenance, it is necessary to disconnect its primary high-voltage switch and secondary low-voltage air switch to ensure that the maintenance equipment is not under voltage and to ensure the safety of maintenance work. During the entire maintenance work, the secondary air switch should be kept in the "open" state. In order to prevent maintenance and operation personnel from mistakenly closing the air switch to supply power to the maintenance equipment, the current technical conditions mainly achieve the purpose of warning by hanging a "Do not close the switch, someone is working" sign on the operating handle of the disconnected secondary air switch. In actual work, the operating handle is downward after the power switch is disconnected, which makes it difficult to hang the safety warning sign and easy to fall off; even if relevant temporary measures are taken on site to hang the sign, the sign has no locking, special operation and other functions, and maintenance and maintenance personnel can operate it, which is prone to human misoperation or misoperation, posing a great hidden danger to the safety of on-site maintenance work. Summary of the invention

[0003] The present invention aims to solve one of the technical problems in the related art at least to a certain extent.

[0004] To this end, the present invention proposes a low-voltage circuit breaker intelligent sign device to prevent unsafe incidents such as personnel misoperating secondary low-voltage circuit breakers during power system maintenance work, thereby ensuring the safety of maintenance site work.

[0005] Another object of the present invention is to provide a method for developing a low-voltage circuit breaker intelligent sign.

[0006] To achieve the above object, the present invention provides a low-voltage circuit breaker intelligent sign device, comprising:

[0007] shell;

[0008] A plurality of hardware devices are installed inside the housing, and the plurality of hardware devices are connected according to a preset hardware circuit diagram; wherein the plurality of hardware devices at least include a touch-type password touch screen, an electromagnetic lock, a relay and a microcontroller;

[0009] The microcontroller executes pre-written program instructions to control and coordinate the work of the touch-type password touch screen, the relay and the electromagnetic lock to determine whether to open the electromagnetic lock according to different input instructions.

[0010] The low-voltage circuit breaker intelligent sign device of the embodiment of the present invention may also have the following additional technical features:

[0011] In one embodiment of the present invention, the housing is an acrylic plate housing.

[0012] In one embodiment of the present invention, the plurality of hardware devices further include: an LED display screen, a buzzer, a magnet, a relay, a battery module and a buck module.

[0013] In one embodiment of the present invention, the housing is fixed to the low-pressure air switch via the magnet.

[0014] In one embodiment of the present invention, the battery module is a lithium battery, and the lithium battery is used as a power source to provide the required operating voltage for the touch-type password touch screen, LED display, electromagnetic lock and microcontroller through a step-down module.

[0015] In one embodiment of the present invention, the microcontroller is an ESP32 microcontroller;

[0016] The touch-type password touch screen receives a password input by a user;

[0017] The ESP32 microcontroller receives the serial port data output by the touch-type password touch screen, and determines whether the password input by the user is correct according to a preset password list to obtain a password verification result;

[0018] If the password verification is successful, the ESP32 microcontroller sends a signal to activate the electromagnetic lock and unlock the low-pressure air switch; otherwise, if the password is incorrect, the electromagnetic lock remains locked.

[0019] In one embodiment of the present invention, in response to the password verification result, the ESP32 microcontroller issues a switching instruction to control the LED display screen to switch to the corresponding text prompt page.

[0020] In one embodiment of the present invention, in response to the password verification result, the ESP32 microcontroller issues a control instruction to control the buzzer to issue an alarm prompt.

[0021] In one embodiment of the present invention, the plurality of hardware devices further include an audio playback module;

[0022] In response to the password verification result, the ESP32 microcontroller sends a play instruction to the audio playback module through the serial port, controlling the audio playback module to issue a voice prompt.

[0023] To achieve the above object, the present invention proposes a method for developing a low-voltage circuit breaker intelligent sign, comprising:

[0024] Determine the circuit connection structure of the internal hardware equipment of the low-voltage circuit breaker intelligent sign device;

[0025] Read the password data inputted by the touch-type password touch screen in the internal hardware device through the serial port;

[0026] Compare the input password data with the preset correct password to obtain the password verification result;

[0027] According to the control instruction of successful password verification, the control relay is closed and the electromagnetic lock is powered on and unlocked;

[0028] According to the control instruction of password verification failure, the control relay is disconnected and the electromagnetic lock remains locked;

[0029] According to the password verification result, the LED display screen, buzzer and audio playback module are controlled by corresponding instructions to perform corresponding instruction operations.

[0030] The low-voltage circuit breaker intelligent sign device and development method of the embodiment of the present invention ensure the correctness of operation while also creating a safe working environment for maintenance personnel. The device is easy and flexible to use and effectively avoids unsafe incidents such as misoperation by personnel.

[0031] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the following description of the embodiments in conjunction with the accompanying drawings, in which:

[0033] Figure 1 2 is a schematic diagram of the structure of a low-voltage circuit breaker intelligent sign device according to an embodiment of the present invention;

[0034] Figure 2 It is a connection diagram of the LED display screen, the touch-type password touch screen, the electromagnetic lock, and the ESP32 microcontroller power supply according to an embodiment of the present invention;

[0035] Figure 3 is a connection diagram of the ESP32 microcontroller master according to an embodiment of the present invention;

[0036] Figure 4 It is a flow chart of a method for developing a low-voltage circuit breaker intelligent sign according to an embodiment of the present invention. DETAILED DESCRIPTION

[0037] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention will be described in detail below with reference to the accompanying drawings and in combination with the embodiments.

[0038] In order to enable those skilled in the art to better understand the scheme of the present invention, the technical scheme 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 creative work should fall within the scope of protection of the present invention.

[0039] The following describes a low-voltage circuit breaker intelligent sign device and a manufacturing method according to an embodiment of the present invention with reference to the accompanying drawings.

[0040] Figure 1 is a structural diagram of a low-voltage circuit breaker intelligent sign device according to an embodiment of the present invention. Figure 1 As shown, including:

[0041] shell;

[0042] A plurality of hardware devices are installed inside the housing, and the plurality of hardware devices are connected according to a preset hardware circuit diagram; wherein the plurality of hardware devices at least include a touch-type password touch screen, an electromagnetic lock, a relay and a microcontroller;

[0043] The microcontroller executes pre-written program instructions to control and coordinate the work of the touch-type password touch screen, the relay and the electromagnetic lock to determine whether to open the electromagnetic lock according to different input instructions.

[0044] It is understandable that the present invention uses ESP32 to develop and manufacture low-voltage air switch intelligent signboards, and its main functions are: realizing the locking operation function; realizing the password operation function, and only the correct password can be entered to operate; realizing the alarm function, when the non-operating operator enters the wrong password to operate the signboard, an alarm sound is issued to warn "no closing, someone is working". This is to prevent the accidental closing of the power switch during the maintenance of power station unit equipment, which causes personal injury caused by misoperation, and ensures the correctness of the power switch operation, and also facilitates the improvement of the safety of maintenance site work.

[0045] The working principle of the present invention is as follows:

[0046] To realize the locking operation function, the electromagnetic lock control is used to realize the operation locking. The DC 12V voltage output by the lithium battery is used to power the electromagnetic lock, and an intermediate relay is added to realize the operation locking control of the electromagnetic lock.

[0047] The password operation function is realized, and the operation can only be performed after the correct password is entered. The correct password is entered through the touch-sensitive password touch screen, and the ESP32 microcontroller receives the serial port data sent by the password input screen. According to different input situations, only after the correct password is entered can the relay be controlled to trigger the electromagnetic lock to open. If the password is entered incorrectly, the electromagnetic lock cannot be opened.

[0048] The alarm function is realized. When the non-operating operator enters the wrong password and moves the sign, an alarm sound is sounded to warn "Do not close the switch, someone is working". The ESP32 microcontroller receives the serial port data sent by the password input touch screen, and decides whether to open the lock according to different password input situations. When the wrong password is entered, the text prompt LED screen is switched to display "Do not close the switch, someone is working", and the audio playback module is controlled to trigger the voice alarm "Do not close the switch, someone is working".

[0049] Specifically, the device of the present invention is implemented in conjunction with the accompanying drawings:

[0050] First, follow Figure 1 The structural schematic diagram shown is made of an acrylic plate shell with dimensions of length (185mm), width (200mm) and height (200mm), which can ensure that the low-pressure air switch at the maintenance site of Sanghe Secondary Hydropower Station can be covered and fixed with magnets.

[0051] Secondly, according to Figure 2 The connection diagram shown connects the LED display, touch-screen password touch screen, electromagnetic lock, buzzer, magnet, ESP32 microcontroller and other accessories according to the hardware circuit diagram, firmly sticks them to the inside of the acrylic board shell, and uses lithium batteries through the step-down module to power the LED display, touch-screen password touch screen, electromagnetic lock, and ESP32 microcontroller respectively.

[0052] Specifically, the materials are: LED display, touch-sensitive password touch screen, electromagnetic lock, buzzer, magnet ESP32 microcontroller, 6000mAh lithium battery, step-down module, connecting wire, fixing tape or double-sided tape, etc. Then follow Figure 2 As shown in the connection diagram, connect the LED display, touch-type password touch screen, electromagnetic lock, buzzer, magnet, ESP32 microcontroller and other accessories according to the hardware circuit diagram. Stick all components firmly to the inside of the acrylic board shell. Use a large-capacity lithium battery to power the LED display, touch-type password touch screen, electromagnetic lock, and ESP32 microcontroller through a step-down module.

[0053] Finally, according to the pre-written Arduino program segment, the interaction with external devices (such as touch-type password touch screen, LED text prompt screen, audio playback module, relay, etc.) is realized to control the opening of the electromagnetic lock and the related display prompt functions. The ESP32 microcontroller receives the serial port data sent by the password touch-type password touch screen, decides whether to open the electromagnetic lock and switch the display page of the text prompt screen according to different input conditions, and controls the triggering and playing of the audio playback module and other operations. Figure 3 A diagram showing the connections for the ESP32 microcontroller master.

[0054] Specifically, the Arduino IDE is used to write a program to realize the interactive functions with external devices such as the touch-screen password touch screen, LED text prompt screen, audio playback module, relay, etc., including receiving serial port data sent by the touch-screen password touch screen, deciding whether to open the electromagnetic lock according to different input conditions, switching the display page of the LED text prompt screen, controlling the triggering and playback of the audio playback module, etc.

[0055] When the user enters the password through the touch-sensitive password touch screen, the ESP32 microcontroller receives the serial port data from the touch screen and determines whether the input is correct based on the preset password list.

[0056] Electromagnetic lock control: If the password verification is successful, the ESP32 microcontroller sends a signal to activate the electromagnetic lock and unlock the low-pressure air switch; otherwise, if the password is wrong, the electromagnetic lock remains locked.

[0057] Display and prompt: According to the result of password input, the LED text prompt screen will switch to the corresponding prompt page. For example, when an incorrect password is entered, the display page of the text prompt LED screen will switch to display "Do not close the switch, someone is working".

[0058] Exemplarily, in response to the password verification result, the ESP32 microcontroller issues a switching instruction to control the LED display screen to switch to a corresponding text prompt page.

[0059] Sound feedback: During the password verification process, the buzzer will sound a sound prompt in certain situations, such as an alarm sound when the password is wrong.

[0060] Exemplarily, in response to the password verification result, the ESP32 microcontroller issues a control instruction to control the buzzer to issue an alarm prompt.

[0061] Other interactions: The device also reserves control interfaces for the audio playback module and relays, which can be expanded with more functions as needed, such as voice prompts, remote control, etc.

[0062] Exemplarily, in response to the password verification result, the ESP32 microcontroller sends a play instruction to the audio playback module through the serial port, and controls the audio playback module to issue a voice prompt.

[0063] It can be understood that the embodiment of the present invention manufactures an acrylic plate shell of a special device, which includes an LED display screen (1), a touch-type password touch screen (1), an electromagnetic lock (1), a buzzer (1), magnets (4), an ESP32 microcontroller (1) and other accessories.

[0064] The specific structure of the embodiment of the present invention is to first design a special acrylic plate shell for the smart signboard, and the size is made into length (185mm), width (200mm), and height (200mm), preferably to cover the power switch, leaving a margin of less than 10%.

[0065] The acrylic plate housing, LED display, touch-type password touch screen, electromagnetic lock, buzzer, magnet, ESP32 microcontroller and other accessories of the embodiment of the present invention need to be firmly pasted and beautiful.

[0066] The device of the embodiment of the present invention is powered by a lithium battery with a capacity of 6000 mAh.

[0067] After the power switch is turned off, the embodiment of the present invention uses the smart sign to cover it and fix it with a magnet. When the power switch is to be operated, the correct password needs to be entered to unlock the smart sign, thereby realizing the locking operation and ensuring the correctness of the power switch operation.

[0068] Based on this, the present invention can realize the locking operation function; realize the password operation function, and the operation can be performed only when the correct password is entered; realize the alarm function, when the non-operating personnel enter the wrong password to activate the signboard, an alarm sound is issued to warn "no closing, someone is working". The present invention can prevent the accidental closing of the power switch during the maintenance of power station equipment, which may cause personal injury caused by the wrong operation, and ensure the correctness of the power switch operation, and also facilitate the improvement of the safety of the maintenance site work.

[0069] According to the low-voltage air switch intelligent signboard device of the embodiment of the present invention, in order to ensure the correctness of the power switch operation and the work safety of the on-site personnel, the device is used as a special warning signboard for locking operation after the power switch is disconnected during the unit maintenance work, which ensures the correctness of the operation and creates a safe working environment for the maintenance personnel. The device is easy to use and flexible, and effectively avoids unsafe incidents such as misoperation by personnel.

[0070] In order to implement the above embodiment, Figure 4 As shown, this embodiment also provides a method for developing a low-voltage circuit breaker intelligent sign, including:

[0071] S1, determine the circuit connection structure of the internal hardware equipment of the low-voltage circuit breaker intelligent sign device;

[0072] S2, reading the password data inputted from the touch-type password touch screen in the internal hardware device through the serial port;

[0073] S3, comparing the input password data with the preset correct password to obtain a password verification result;

[0074] S4, according to the control instruction of successful password verification, the control relay is closed, and the electromagnetic lock is powered on and unlocked;

[0075] S5, according to the control instruction of password verification failure, the control relay is disconnected and the electromagnetic lock remains locked;

[0076] S6, according to the password verification result, the LED display screen, buzzer and audio playback module are controlled by corresponding instructions to perform corresponding instruction operations.

[0077] According to the method for developing a low-voltage circuit breaker intelligent signboard in an embodiment of the present invention, the low-voltage circuit breaker intelligent signboard is developed and manufactured using ESP32, which can prevent the accidental closing of the power switch during the maintenance of power station unit equipment, thereby preventing the occurrence of personal injury incidents caused by misoperation, thereby ensuring the correctness of the power switch operation and facilitating the improvement of the safety of work at the maintenance site.

[0078] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" etc. means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner. In addition, those skilled in the art may combine and combine the different embodiments or examples described in this specification and the features of the different embodiments or examples, without contradiction.

[0079] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of the features. In the description of the present invention, the meaning of "plurality" is at least two, such as two, three, etc., unless otherwise clearly and specifically defined.

Claims

1. A low-voltage circuit breaker intelligent sign device, characterized in that: include: shell; A plurality of hardware devices are installed inside the housing, and the plurality of hardware devices are connected according to a preset hardware circuit diagram; wherein the plurality of hardware devices at least include a touch-type password touch screen, an electromagnetic lock, a relay and a microcontroller; The microcontroller executes pre-written program instructions to control and coordinate the work of the touch-type password touch screen, the relay and the electromagnetic lock to determine whether to open the electromagnetic lock according to different input instructions.

2. The device according to claim 1, characterized in that The shell is an acrylic plate shell.

3. The device according to claim 1, characterized in that The multiple hardware devices also include: an LED display screen, a buzzer, a magnet, a relay, a battery module and a buck module.

4. The device according to claim 3, characterized in that The housing is fixed on the low-pressure air switch through the magnet.

5. The device according to claim 3, characterized in that The battery module is a lithium battery, which is used as a power source to provide the required working voltage for the touch-type password touch screen, LED display, electromagnetic lock and microcontroller through a step-down module.

6. The device according to claim 3, characterized in that The microcontroller is an ESP32 microcontroller; The touch-type password touch screen receives a password input by a user; The ESP32 microcontroller receives the serial port data output by the touch-type password touch screen, and determines whether the password input by the user is correct according to a preset password list to obtain a password verification result; If the password verification is successful, the ESP32 microcontroller sends a signal to activate the electromagnetic lock and unlock the low-pressure air switch; On the contrary, if the password is wrong, the electromagnetic lock remains locked.

7. The device according to claim 6, characterized in that In response to the password verification result, the ESP32 microcontroller issues a switching command to control the LED display to switch to the corresponding text prompt page.

8. The device according to claim 6, characterized in that In response to the password verification result, the ESP32 microcontroller issues a control instruction to control the buzzer to sound an alarm.

9. The device according to claim 6, characterized in that The multiple hardware devices also include an audio playback module; In response to the password verification result, the ESP32 microcontroller sends a play instruction to the audio playback module through the serial port, controlling the audio playback module to issue a voice prompt.

10. A method for developing a low-voltage circuit breaker intelligent sign, characterized in that: The method comprises: Determine the circuit connection structure of the internal hardware equipment of the low-voltage circuit breaker intelligent sign device; Read the password data inputted by the touch-type password touch screen in the internal hardware device through the serial port; Compare the input password data with the preset correct password to obtain the password verification result; According to the control instruction of successful password verification, the control relay is closed and the electromagnetic lock is powered on and unlocked; According to the control instruction of password verification failure, the control relay is disconnected and the electromagnetic lock remains locked; According to the password verification result, the LED display screen, buzzer and audio playback module are controlled by corresponding instructions to perform corresponding instruction operations.

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