CN110906379B - Automatic closing and counting system for gas stove - Google Patents

Abstract

The invention relates to an automatic closing counting system of a gas stove, which comprises a switch timing device, a wireless control device and detectors with different detection functions, wherein the detectors are respectively and independently installed, the switch timing device comprises a timing module for setting time, a microprocessor control unit for judging and processing and a mechanical knob switch driven by a motor, and the microprocessor control unit processes and judges a signal received from the detection device to control the motor to drive the mechanical knob switch to rotate for closing. The invention is actually an improvement of the traditional scheme for manually or semi-automatically controlling the independent switch component for opening and closing the gas stove, provides necessary condition support for realizing the automatic closing counting system of the gas stove which is convenient to control in the future by matching with the corresponding auxiliary module, and is beneficial to preventing accidents caused by forgetting to close the gas stove by utilizing the switch device arranged on the gas cooking bench and assisting the corresponding functional module.

Description

Automatic closing and counting system for gas stove

Technical Field

The invention relates to the technical field of stoves, in particular to an automatic closing and counting system for a gas stove.

Background

As is well known, gas stoves and gas stoves belong to the category of stoves, and it is obvious to those skilled in the art or those not skilled in the art that the basic operation of these two common stoves can help the skilled in the art to understand the respective research directions of these two stoves, so as to further understand the gas stove shut-down counting system according to the technical solution of the present invention.

Firstly, when the gas stove works, gas enters the stove from the gas inlet pipe, enters the stove head through the adjustment of the gas valve, and is mixed with a part of air, and the mixed gas is sprayed out of the fire holes of the distributor and is ignited by the ignition device to form flame. When the gas stove works, the stove using gas as fuel does not need a fuel vaporizing device and a special fuel pressurizing mechanism in structure, does not need preheating in use, and can be started to use as long as a control valve and a gas burner are arranged on a fuel tank, and the control valve is opened for ignition.

Secondly, the main components of the gas and the natural gas are methane, the gas cooker actually enlarges the gas outlet hole a little compared with the natural gas cooker, the gas contains methane which is relatively low but is generally more than or equal to 30 percent, and the methane content of the natural gas is generally more than or equal to 90 percent.

The known gas stove comprises a gas stove special for natural gas and a gas stove special for liquid barreled gas, the difference of the two types of gas stoves is that the gas channels of the gas switches are different in size, and the size of the gas channel of the gas switch special for natural gas is larger than that of the gas switch special for liquid barreled gas; however, no matter what kind of gas switch, the opening and closing action is particularly critical, and a single manual closing mode is commonly used in the field, but the gas switch is not beneficial to safety protection, and the practical evidence proves that most of the existing gas stoves lack effective measures which are beneficial to automatically opening and closing the gas stoves, so that accidents caused by forgetting to close the gas stoves after the gas stoves are used are easily caused, and the great potential safety hazard exists in practice.

Research personnel of the technical scheme of the invention carry out analysis on the source problem of dangerous accidents caused by the fact that users forget to close the burning gas stove, and find that solving the problem actually meets the safe use requirements of the majority of users. Certainly, after potential safety hazards are analyzed according to the gas stove switching technology, researchers of the technical scheme optimize the problems found in each research and development stage, and conduct multiple performance tests on the intermediate schemes to finally obtain the optimal optimized technical scheme.

Aiming at the existing gas stove switching devices, research and development personnel find that the switching devices are actually only an independent component for manually or semi-automatically controlling the gas stove to be switched on and off in the process of solving the problems, and due to the lack of corresponding auxiliary modules for matching, the switching devices do not have the automatic control condition or a real system convenient for realizing control, and in the field, the related technical means for constructing a counting system aiming at the automatic switching-off of the gas stove are not found in the prior technical means; in order to facilitate the automatic closing function of the gas stove, a person skilled in the art needs to design a specific technical solution in the development process.

In summary, the present invention provides an automatic closing/counting system for a gas stove based on the prior art, which is used for effectively and quickly solving the problem of opening/closing the gas stove in real time by adding corresponding function modules on the basis of the prior gas stove opening/closing device, thereby avoiding the adverse accident caused by forgetting to close the burning gas stove during the application process. The proposed solution thus enables to solve or partially solve the problems of the prior art.

Disclosure of Invention

In order to overcome the above problems or at least partially solve or alleviate the above problems, the present invention provides an automatic gas stove shutdown and counting system, which can provide support for real-time, effective and quick solution of the problem of gas stove shutdown, thereby being beneficial to avoid adverse accidents caused by users forgetting to shutdown the burning gas stove.

In order to achieve the purpose, the invention adopts the following technical scheme:

an automatic closing counting system of a gas range, which is formed by adding corresponding function modules to a switch knob part assembled to a gas cooktop in cooperation with respective detecting devices disposed outside a switch, comprising:

the switch timing device is arranged on the gas cooking bench and comprises a timing module for setting time, a microprocessor control unit for judging and processing and a mechanical knob switch driven by a motor, wherein the microprocessor control unit processes and judges a signal received from the detection device to control the motor to drive the mechanical knob switch to rotate for closing; meanwhile, the timing module is used for counting during cooking and driving the motor of the motor to drive the mechanical knob switch to rotate to close when being triggered at set time;

the wireless control device is arranged outside the switch timing device and is used for receiving and transmitting signals and sending real-time information to a mobile phone of a user by matching with the gateway so as to control the switch to be switched off by remote control;

any detector detects the abnormity and sends out an alarm, and the wireless control device informs the switch timing device to close the gas stove;

and the falling detection unit is assembled on the switch timing device and used for sounding to warn a user or sending a falling prompt message through the gateway.

In addition, the switch timing device is matched with the gas valve switch control part, and when abnormality is detected, the gas valve switch control part is linked to close the gas valve switch at the same time.

For the technical means adopted above, a technician can further configure the switch timing device on the basis of the same concept to form different technical solutions, and the implemented technical means include the following:

for the switch timing device, the switch timing device can be provided with a warning prompt tone function module which comprises a sounder and a display part, wherein the sounder is a horn or a buzzer;

for the switch timing device, the motor of the switch timing device can be provided with a resistance detection function module, the rotation direction of the switch timing device is a single direction and only has a closing function;

for the switch timing device, the single-button rapid cycle design can be adopted;

for the switch timing device, a battery can be used for low-power detection, when the voltage of the battery reaches 2.6V, a low-power alarm sound is emitted for 3-5 seconds, and the switch is provided with a red LED to flash;

the switch timing device may have keys for setting on its outer surface, including an input key for setting or canceling the counting operation time by the user.

For the technical means adopted above, a technician can further configure the wireless control system to form different technical solutions on the basis of the same concept, and the implemented technical means include the following:

for a wireless control system, the wireless control system can be carried out in a broadcast mode, and when the gateway is integrated, the function failure of the switch timing device cannot occur when the gateway fails due to reasons;

accordingly, its broadcast ID in broadcast mode is a uniform RF broadcast ID generated by the gateway at pairing, acting upon receipt of the emergency control or alarm of the gateway.

In addition, the working state of the switch timing device of the technical scheme of the invention comprises the following steps:

i, after starting an ignition switch, a counter displays that set time counting can be carried out within 10 seconds, otherwise, the counting and closing function is considered to be abandoned, an LED is closed, one of three time keys can be pressed down in the midway to set the countdown time, and only manual closing can be carried out;

II, when the set time is up, carrying out sound warning reminding, and at the moment, recounting only by pressing the time setting key once again;

III, when the countdown time is set, resetting the countdown time in the midway, and counting the time immediately after pressing a time key;

IV, when entering a manual mode, the temperature detection function carries out an alert detection mode to ensure the use safety;

v, when counting, one time key is continuously pressed for 3 seconds, and the counting function can be cancelled.

The gas stove automatic closing counting system implemented by the invention is actually an improvement of the traditional scheme for manually or semi-automatically controlling the gas stove to open and close the independent switch component, and provides necessary condition support for the gas stove automatic closing counting system convenient to control in the future by matching with the corresponding auxiliary module.

Drawings

The invention is explained in further detail below with reference to the drawing.

FIG. 1 is a schematic view of an automatic closing and counting system for a gas stove according to the present invention;

FIG. 2 is a schematic view of an automatic closing and counting system for a gas stove according to the present invention;

FIG. 3 is a schematic diagram of the signal transceiving relationship of the automatic closing and counting system for gas stove according to the present invention;

FIG. 4 is a schematic view of an automatic closing and counting system for a gas stove according to the present invention, which employs a switch portion;

FIG. 5 is a schematic view showing an installation position of a switch portion of an automatic closing counting system for a gas range in which the present invention is embodied;

fig. 6 is an exemplary diagram of a chip for a technician to implement the switch timing device of the automatic closing and counting system of the gas stove according to the present invention.

In the figure:

100. a gas cooktop; 101. a switch timing device; 102. a smoke detector; 103. a carbon monoxide detector; 104. a wireless control device; 105. and (6) switching a gas valve.

Detailed Description

The invention discloses an automatic closing counting system of a gas stove, which is to be implemented, aims to solve the problem that a control system capable of effectively and quickly avoiding potential safety hazards in real time cannot be constructed due to the fact that a conventional gas stove switching device is only an independent component for manually controlling the gas stove to be opened and closed and lacks a corresponding auxiliary module, and if the technical problem cannot be solved, accidents are easily caused due to the fact that the gas stove is forgotten to be closed after being used.

The technical scheme of the invention mainly relates to how to construct an integral system framework by arranging various devices and modules including a gas stove switching device, the device or the module is used for layout to provide necessary condition support for forming a control system, but not how to design the module or improve the device, due to different application environments and conditions of the constructed system, the related technical means can be wide, for some conventional technical means which are not in the technical scheme of the invention, the invention does not need to refine the module type, the installation position, the assembly mode, the installation component and the like of each system link, for example, wireless communication between devices is obviously achieved by using signal transceiving components, and electrical connection between devices is obviously achieved by using wiring connections, although the invention is not limited thereto, and is not practical if all the devices are listed. Therefore, the implemented technical solution is actually a system framework that can be referred and implemented by those skilled in the art by combining with conventional technical means, and the system framework formed according to the present application can be actually assembled and debugged by the skilled in the art according to different application conditions and environments, so as to construct a final gas stove automatic closing counting system, and a series of advantages brought by the constructed system can be actually obtained, and the advantages will be gradually reflected in the following analysis of the system layout.

As shown in fig. 1 to 5, the automatic gas stove turn-off counting system implemented by the present invention includes a wireless control device 104 independently installed outside, a temperature detection unit, a smoke detector 102, and a carbon monoxide detector 103 independently installed outside, a switch timing device 101 installed on a gas range 100, a microprocessor control unit installed on the switch timing device 101, and a drop detection unit installed on the switch timing device 101 and connected to the microprocessor control unit, and meanwhile, for each detection device independently installed outside, a technician can determine a position, which is not unique, according to an actual spatial position relationship around the range, and the implemented automatic gas stove turn-off counting system specifically implements technical means for use including:

(1) when a technician assembles the switch timing device 101, the technician at least has a mechanical knob switch driven by a motor, which can preferably adopt an installation means which is convenient to replace, assemble and has a conventional size according to a conventional technical means in the field, and each component of the implemented switch timing device 101 can easily and simply replace the traditional cooking bench switch without structurally modifying the cooking bench, namely, a switch device is adopted to replace the original gas stove ignition knob switch during implementation; the implemented switch timing device 101 is used for informing the awakening microprocessor control unit to enter a program running state when the user turns to ignite, after the motor of the switch timing device 101 is driven, the switch timing device 101 can detect whether the switch turns to a position or not so as to inform the microprocessor control unit to carry out system program running of the next stage, and the mechanical rotary switch is convenient to disassemble, assemble and clean.

Accordingly, when the technician assembles the switch timing device 101, the microprocessor control unit therein is used for processing and calculating the detection signal, and can control the motor, the battery low power notification, the wireless control, the timing, the temperature detection and other signal sources.

Accordingly, when the switching timer device 101 is assembled, the technician has keys on the outer surface thereof for setting, including the input keys for setting or canceling the counting operation time by the user, and adopts a simple operation design according to the conventional technical means in the art, and the counting time is preset in the system, so that the user can operate the device quickly, and specifically, the technician can use the programmable buttons to set the required time by the user, and the setting keys can be changed according to the shape and the product function.

Accordingly, when the technician assembles the on/off timing device 101, the technician has a warning/warning sound function module, which includes a sound generator and a display portion, wherein the sound generator may be a speaker or a buzzer and is used for sounding when the machine is in operation or abnormal to prompt the user, and the display portion may be an LCD or seven-segment display.

Accordingly, when the switch timing device 101 is assembled by a technician, the motor needs to consider that different gas stove rotary switches may have different rotating torques during installation, so according to the conventional technical means, a resistance detection function needs to be designed, the rotating direction is a single direction, only the related functions do not have the opening function, and because the rotary switches of each gas stove have different rotating forces, the current of the motor needs to be too small during resistance detection, so as to prevent the motor from being driven.

Furthermore, when the technician assembles the switch timing device 101, the timing function thereof considers simple operation and actual needs, and further adopts a single rapid single-button circulation type design, including rapid timing of three minutes levels of 5min, 10min and 15min, the ignition switch needs to be rotated within 10 seconds after the time key is pressed, when the ignition switch detects that the fixed time is 2 seconds, the counting can be started automatically, otherwise, the countdown function can not be started;

furthermore, when the technician assembles the switch timing device 101, preferably 1 CR123 battery is used, and the switch timing device has a low-power detection function, and when the battery voltage reaches 2.6V, the low-power alarm beep sound is emitted for 3-5 seconds, the switch panel with a red LED flashes, and after the low power, the operation of timing for 30 minutes and closing for more than 5 times is performed, so as to ensure safe use, and when the RF function is available, the low-power notification function is emitted through the gateway.

In the automatic closing counting system of the gas stove, when a technician assembles the switch timing device 101, the system is provided with the falling detection unit, because the environmental factors of the gas stove can only be fixed in a double-sided adhesion mode, the adhesion of the fixed surface can be influenced by the environmental oil smoke, so that in order to prevent the falling of the gas stove from influencing the judgment of a user when the user is not aware of the falling, a falling detection function can be added, and as long as the gas stove is switched off regularly and is not adhered well with the surface of the gas stove, a warning of a beeping sound is sent to remind the user or a prompt wave pushing information of the falling can be sent out through a gateway simultaneously when the gateway exists.

As shown in FIG. 2, the automatic turn-off counting system of the gas stove implemented by the invention can be operated by the skilled person after laying out the corresponding modules, after starting the ignition switch, the counter will display, at this time, the set time counting can be performed within 10 seconds, otherwise, the LED will be turned off by giving up the counting turn-off function, and one of the three time keys can be pressed down in the middle to set the countdown time, otherwise, the manual turn-off can be performed; when the set time is up, the voice warning reminding is carried out, the recounting can be carried out only by pressing the time setting key once again, for example, the recounting is carried out by pressing 5 minutes originally, then 10 minutes is pressed, and the recounting is carried out by pressing the time; when the countdown time is set, the countdown time can be reset in the middle, and the time counting can be carried out immediately after a time key is pressed; when the manual mode is entered, the temperature detection function is still executing actions, and at the moment, a warning detection mode is carried out to ensure the use safety; when counting, pressing one of the time keys for 3 seconds can cancel the counting function.

In addition, according to different application requirements of technicians, a pairing function can be additionally added, and the following proposal is provided for reference by the invention: before an ignition switch is not started, a time counting key T1 is singly pressed, so that the device has two pairing modes of a pairing mode and a Learning mode, wherein the pairing mode is a Main Sensor of the device and is a common broadcast RF ID of all paired devices; the Learning mode is that the gas stove timing closing device is switched to a common Sensor, and can be matched with a Main Sensor gas stove timing closing device at the moment, and the Learning mode is also a mode for matching the gas stove timing closing device with a Gateway later; when the ignition switch is actuated, T1/T2/T3 is the time set key function, and T1 is the cancel function.

As shown in fig. 3, the switch timing device 101 of the automatic closing counting system of the gas stove implemented by the present invention is a unit that can set time or control with other detecting devices or wireless devices, if it can use its own counting function alone, it can also be used as the counting function during cooking, but when the set time is up, it triggers the motor to open and close the switch on the gas stove to close the gas stove;

further, the switch timing device 101 of the automatic closing counting system of the gas stove can be used in combination with the gas valve switch control part, when an abnormality is detected, the gas valve switch 105 is closed simultaneously by linking the gas valve switch control part, so as to achieve safer protection, and when the RF linkage is performed, if the abnormality is detected by the smoke detector 102, the carbon monoxide detector 103 or the temperature detection unit, the RF wireless control device 104 notifies the switch timing device 101 and the gas valve switch to perform the closing action.

The automatic closing counting system of the gas stove, which is implemented by the invention, has the working principle that the implemented switch timing device 101 and other modules also comprise a smoke detector 102, a carbon monoxide detector 103 or a temperature detection unit which are matched, when the smoke detector 102, the carbon monoxide detector 103 or the temperature detection unit detects abnormality and sends out an alarm, the switch timing device 101 can be informed to close the gas through the same wireless protocol of the wireless control device 104, thereby strengthening the prevention of accidents; the device can be matched with a Gateway (Gateway) to realize external notification, can send out real-time wave pushing information to a mobile phone of a user through a website when the Gateway is matched, and is also favorable for controlling the actions of the gas stove automatic closing counter and the gas gate to be closed through remote control.

The wireless control system of the automatic closing counting system of the gas stove has the wireless function, can preferably adopt a broadcast mode to carry out, and when the gateway is integrated, the function failure of the switch timing device 101 cannot be caused when the gateway fails due to reasons;

correspondingly, in the integration with the gateway, the switch timing device 101 and the gas gate controller both adopt a wireless broadcast mode, as long as the matched smoke detector 102, carbon monoxide detector 103 or temperature detection unit detects abnormal actions and then sends out corresponding broadcast ID, and after receiving the broadcast ID, the gateway closes the action, and after receiving the broadcast ID, the gateway sends out the notification push wave information through the network;

meanwhile, the broadcast ID is a uniform RF broadcast ID generated in pairing on the gateway, and the broadcast ID is realized by using the uniform RF broadcast ID, and the action is carried out as soon as the emergency control or alarm in the gateway system receives the broadcast ID, so that the queue waiting time of FIFO (first in first out) is saved, the fastest and most real-time notification control can be carried out, and the gas is turned off, and the maximum influence degree is further reduced.

As shown in fig. 6, for the above technical solutions implemented by the present invention, the device model and the chip model adopted by the switch timing device 101 are conventional apparatuses commonly used by those skilled in the art, and those skilled in the art can replace different devices or chips by taking the technical means implemented by the present invention as reference, and although the different models can be properly replaced in the same link, they are all implemented on the basis of being able to implement the function of the link, therefore, a chip diagram listed in fig. 6 is only an example listed, and since the types of chips used for different requirements may be different, the device chip model related to the technical solutions of the present invention can be referred to by the skilled person, and is not limited thereto, and the different models related to the present invention are not listed one by one.

In the description herein, the appearances of the phrases "embodiment one," "this embodiment," "specific implementation," and the like in this specification are not necessarily all referring to the same embodiment or example, but rather to the same embodiment or example. In this specification, the schematic representations of the terms used above do not necessarily refer to the same embodiment or example; furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

In the description of the present specification, the terms "connect", "mount", "fix", "set", "have", and the like are used in a broad sense, for example, the "connect" may be a fixed connection or an indirect connection through intermediate components without affecting the relationship and technical effects of the components, or may be an integral connection or a partial connection, as in this case, for a person skilled in the art, the specific meaning of the above terms in the present invention can be understood according to specific situations.

The foregoing description of the embodiments is provided to enable any person skilled in the art to make and use the embodiments, and it is to be understood that various modifications may be readily apparent to those skilled in the art, and that the generic principles defined herein may be applied to other embodiments without the use of the inventive faculty. Therefore, the present disclosure is not limited to the above embodiments, and modifications to the following cases should be included within the scope of the present disclosure: firstly, a new technical scheme is implemented on the basis of the technical scheme of the invention and in combination with the prior common general knowledge, the technical effect generated by the new technical scheme is not beyond the technical effect of the invention, for example, the technical scheme for the automatic closing function of the gas stove is formed by adopting a switch timing device and combining a detection module arranged outside and a wireless control part, and the technical scheme is not beyond the beneficial effect of the invention; equivalent replacement of part of the characteristics of the technical scheme of the invention by adopting the known technology produces the same technical effect as the invention, for example, equivalent replacement of devices in a system frame by adopting devices of different types; expanding on the basis of the technical scheme of the invention, wherein the substantial content of the expanded technical scheme does not exceed the technical scheme of the invention; and fourthly, the technical means obtained by utilizing the equivalent transformation carried out by the text record content of the invention is applied to other related technical fields.

Claims (9)

1. An automatic gas stove turn-off counting system formed by adding a corresponding function module to a switch knob part assembled to a gas cooktop to cooperate with respective detection devices disposed outside a switch, the automatic gas stove turn-off counting system comprising:

the switch timing device is arranged on a gas cooking bench and comprises a timing module for setting time, a microprocessor control unit for judging and processing and a mechanical knob switch driven by a motor, wherein the microprocessor control unit processes and judges a signal received from a detection device to control the motor to drive the mechanical knob switch to rotate for closing; meanwhile, the timing module is used for counting during cooking and driving the motor to drive the mechanical knob switch to rotate to close when being triggered at set time;

the wireless control device is arranged outside the switch timing device and is used for receiving and transmitting signals and sending real-time information to a mobile phone of a user by matching with the gateway so as to control the corresponding device to be closed through remote control;

any detector of the temperature detector, the smoke detector and the carbon monoxide detector which are respectively and independently installed sends out an alarm when detecting the abnormity, and informs the switch timing device to close the gas stove through the wireless control device;

the drop detection unit is assembled on the switch timing device and used for sounding to warn a user or sending drop prompt information through the gateway;

when the switch timing device is rotated and ignited by a user, the switch timing device is used for informing and awakening the microprocessor control unit to enter a program running state, and when the motor of the switch timing device is driven, the switch timing device can detect whether the switch is positioned or not so as to inform the microprocessor control unit to carry out system program running of the next stage;

the switch timing device adopts an independent rapid single-button circulating design, comprises three minute levels of 5min, 10min and 15min for rapid timing, an ignition switch needs to be rotated within 10 seconds after a time key is pressed down, counting can be started automatically when the ignition switch detects that the fixed time is 2 seconds, otherwise, the countdown function cannot be started.

2. The automatic shut-down counting system for gas range as claimed in claim 1, wherein: the switch timing device is matched with the gas valve switch control part, and when abnormality is detected, the switch timing device is linked with the gas valve switch control part to simultaneously close the gas valve switch.

3. The automatic shut-down counting system for gas range as claimed in claim 1, wherein: the switch timing device is provided with a warning prompt tone function module which comprises a sounder and a display part, wherein the sounder is a loudspeaker or a buzzer.

4. The automatic shut-down counting system for gas range as claimed in claim 1, wherein: the motor is provided with a resistance detection function module, the rotation direction of the resistance detection function module is a single direction, and only the function of closing is realized.

5. The automatic shut-down counting system for gas range as claimed in claim 1, wherein: the switch timing device is assembled, a battery is used for low-power detection, when the low voltage of the battery is detected, a low-power alarm sound is sent out for 3-5 seconds, and the switch is provided with a red LED to flicker.

6. The automatic shut-down counting system for gas range as claimed in claim 1, wherein: the switch timing device is provided with a key for setting on the outer surface, and comprises an input key for setting or canceling the set counting action time by a user.

7. The automatic shut-down counting system for gas stoves, according to any one of claims 1 to 6, wherein: the wireless control system is carried out in a broadcast mode, and when the gateway is integrated, the function failure of the switch timing device cannot occur when the gateway fails due to reasons.

8. The automatic shut-down counting system for gas stoves, according to any one of claims 1 to 6, wherein: the broadcast ID of the wireless control system in broadcast mode is a uniform RF broadcast ID generated by the gateway at the time of pairing, and is acted upon as soon as the emergency control or alarm of the gateway is received.

9. The automatic gas stove turn-off counting system according to claim 1, wherein the operation state of the switch timing device comprises:

after the ignition switch is started, the counter displays that the set time counting can be carried out within 10 seconds, otherwise, the counting and closing function is considered to be abandoned, the LED is closed, one of the three time keys can be pressed down in the midway to set the countdown time, and the manual closing can be carried out;

II. When the set time is up, the voice warning prompt is carried out, and at the moment, the recounting can be carried out only by pressing the time setting key once again;

III, when the countdown time is set, resetting the countdown time in the middle, and counting the time immediately after a time key is pressed;

IV, when entering the manual mode, the temperature detection function carries out a warning detection mode so as to ensure the use safety;

v, when counting, one time key is continuously pressed for 3 seconds, and the counting function can be cancelled.

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