CN116417829A - Power line temperature detection protection system and method and temperature detection control device - Google Patents

Power line temperature detection protection system and method and temperature detection control device Download PDF

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Publication number
CN116417829A
CN116417829A CN202111653221.5A CN202111653221A CN116417829A CN 116417829 A CN116417829 A CN 116417829A CN 202111653221 A CN202111653221 A CN 202111653221A CN 116417829 A CN116417829 A CN 116417829A
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Prior art keywords
temperature
signal
power
detection control
power plug
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CN202111653221.5A
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Chinese (zh)
Inventor
何爱民
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Shenzhen Hesheng Innovation Technology Co ltd
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Shenzhen Hesheng Innovation Technology Co ltd
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Priority to CN202111653221.5A priority Critical patent/CN116417829A/en
Publication of CN116417829A publication Critical patent/CN116417829A/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/04—Pins or blades for co-operation with sockets
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01K—MEASURING TEMPERATURE; MEASURING QUANTITY OF HEAT; THERMALLY-SENSITIVE ELEMENTS NOT OTHERWISE PROVIDED FOR
    • G01K7/00—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements
    • G01K7/16—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements
    • G01K7/22—Measuring temperature based on the use of electric or magnetic elements directly sensitive to heat ; Power supply therefor, e.g. using thermoelectric elements using resistive elements the element being a non-linear resistance, e.g. thermistor
    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05B—CONTROL OR REGULATING SYSTEMS IN GENERAL; FUNCTIONAL ELEMENTS OF SUCH SYSTEMS; MONITORING OR TESTING ARRANGEMENTS FOR SUCH SYSTEMS OR ELEMENTS
    • G05B19/00—Programme-control systems
    • G05B19/02—Programme-control systems electric
    • G05B19/04—Programme control other than numerical control, i.e. in sequence controllers or logic controllers
    • G05B19/042—Programme control other than numerical control, i.e. in sequence controllers or logic controllers using digital processors
    • G05B19/0423—Input/output
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01C—RESISTORS
    • H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
    • H01C7/008—Thermistors
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R13/00—Details of coupling devices of the kinds covered by groups H01R12/70 or H01R24/00 - H01R33/00
    • H01R13/02—Contact members
    • H01R13/025—Contact members formed by the conductors of a cable end
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H3/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal electric working condition with or without subsequent reconnection ; integrated protection
    • H02H3/02—Details
    • H02H3/04—Details with warning or supervision in addition to disconnection, e.g. for indicating that protective apparatus has functioned
    • H—ELECTRICITY
    • H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
    • H02H—EMERGENCY PROTECTIVE CIRCUIT ARRANGEMENTS
    • H02H5/00—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection
    • H02H5/04—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature
    • H02H5/047—Emergency protective circuit arrangements for automatic disconnection directly responsive to an undesired change from normal non-electric working conditions with or without subsequent reconnection responsive to abnormal temperature using a temperature responsive switch

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  • Physics & Mathematics (AREA)
  • Engineering & Computer Science (AREA)
  • Microelectronics & Electronic Packaging (AREA)
  • General Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Nonlinear Science (AREA)
  • Automation & Control Theory (AREA)
  • Details Of Connecting Devices For Male And Female Coupling (AREA)

Abstract

The invention provides a power line temperature detection protection system and method and a temperature detection control device, wherein the power line temperature detection protection system comprises a power plug, electric equipment, a power line and the temperature detection control device, the electric equipment comprises a load switch device, the power line comprises a live wire and a zero wire which are led out from the power plug and are respectively connected to the electric equipment, the temperature detection control device comprises a temperature sensing spring switch which is arranged on the power plug and is connected with the live wire or the zero wire, a signal detection control unit which is arranged on the electric equipment, and a signal wire which is connected with the temperature sensing spring switch and the signal detection control unit, wherein the temperature change of the power plug is fed back through the temperature sensing spring switch, the signal detection control unit controls the disconnection or connection of the load switch device of the electric equipment, and warning response signals are provided for users.

Description

Power line temperature detection protection system and method and temperature detection control device
Technical Field
The present invention relates to a temperature protection device, and more particularly, to a system and a method for detecting and protecting a power line temperature and a temperature detection control device.
Background
Scientific progress, technological development, and various electric or electronic products are gradually brought into the lives of people, and are gradually becoming indispensable. The current electric or electronic products are connected with a power supply through a power line to obtain working electric energy. That is, the power line is a wire connecting a power source and an electric or electronic product. However, the power cords often cause fire or other safety problems due to overheating of the power cords at an early stage, that is, the power cords at an early stage do not have settings for ensuring safety of users and electric appliances. Nowadays, the power cord applied to high-power appliances must be provided with overheat protection function to ensure the safety of the user and the appliances. Further, when the temperature of the power line is too high, the power line is automatically disconnected to protect a user and an electric appliance, and when the temperature is recovered to be normal, the power line is automatically conducted to be convenient for the user to continue to use, but the conventional power line in the early stage cannot meet the requirement.
Aiming at the problem that the traditional power line is not provided with overheat protection in the early stage, a prior case (CN 211719903U) discloses a plug structure with a built-in thermal protector, wherein the technical scheme disclosed in the prior art is a thermal protector which can be automatically disconnected when the temperature of a circuit is too high and can be automatically connected when the temperature is low, the plug structure can play a good protection role and can be reused, the increase of the use cost of a user can be avoided, and the overall structural design of the plug structure is very reliable. However, a clear disadvantage here is that the power cord cannot feed back a signal to the consumer after a power failure, so that the consumer cannot react to it. That is, the plug structure provided with the thermal protector may be turned off or on according to the temperature change, but the electrical appliance connected with the plug may not be restored to the previous operation mode, and the electrical appliance may not be used to further provide feedback. However, the degree of intellectualization of electrical devices, such as home appliances, is increasing nowadays, and these highly intelligent devices not only passively respond to external signals, but also actively analyze external signals and make corresponding response actions according to the analysis result, for example, when receiving an external signal representing an excessive temperature, can perform relative response actions such as an alarm. However, the power line commonly used today is not matched with the highly intelligent electrical equipment to achieve the above-mentioned response actions of analysis and feedback.
Disclosure of Invention
One advantage of the present invention is that it provides a system and method for protecting temperature detection of a power line and a temperature detection control device, wherein the power supply state of a corresponding load of an electric device is controlled according to temperature change of a power plug, and an alarm response signal is provided. Further, when the temperature of the power plug is too high, a load switch device of the electric equipment is disconnected, when the temperature of the power plug returns to normal, the load switch of the electric equipment is restarted, and when the power plug is disconnected and restarted, corresponding warning response signals are provided.
Another advantage of the present invention is that it provides a power line temperature detection protection system and method and a temperature detection control device, wherein when the power plug temperature changes, a voltage signal is transmitted to the electric equipment through a signal line, and the electric equipment automatically analyzes and controls a load switching device to be disconnected or connected according to the voltage signal. Particularly, when the load switch device of the electric equipment is disconnected, an alarm response signal, such as an alarm, a buzzer or information, can be provided for a user, wherein the alarm response signal can be provided to an electronic device appointed by the user in a wired or wireless (WiFi or Bluetooth) remote transmission mode.
The invention has the advantages that the invention provides a power line temperature detection protection system and method and a temperature detection control device, wherein the electric equipment is matched with the temperature change of the power plug, and the system can actively analyze signals and make corresponding response action according to the analysis result when the electric equipment is automatically powered off or on.
Another advantage of the present invention is that it provides a system and a method for protecting temperature detection of a power line and a temperature detection control device, wherein when the power plug is overheated, the electric equipment directly and automatically turns off the load switch device to ensure safety of a user, and when the power plug temperature returns to normal, the electric equipment directly and automatically connects the load switch device, wherein when the electric equipment is activated, the warning response signal can be provided to the user or the user at the same time, so that the user receives corresponding information immediately.
Another advantage of the present invention is that it provides a system and a method for detecting and protecting a power line temperature and a temperature detecting and controlling device, wherein a temperature sensing spring switch disposed on the power plug can be turned off or on according to the temperature change of the power plug, and provides a signal detecting and controlling unit for the voltage signal to further perform various subsequent preset responding actions.
Another advantage of the present invention is that it provides a power line temperature detection protection system and method and a temperature detection control device, wherein when the power plug temperature changes, the signal detection control unit provided to the electric equipment controls the electric equipment to perform various actions, including the disconnection or connection of the load switch device, the provision of the alarm response signal, and the like.
Another advantage of the present invention is that it provides a power line temperature detection protection system and method and a temperature detection control device, wherein the power plug is not powered off or on when the temperature of the power plug is changed, but the power consumption device is utilized to directly perform various actions. In other words, the signal detection control unit ensures that electric energy is obtained through a power circuit.
Another advantage of the present invention is that it provides a power line temperature detection protection system and method and a temperature detection control device, wherein the system and method are used for instantly transmitting the state of the electric equipment to the absent user, so that the remote user can instantly grasp the power consumption condition of the electric equipment, and the risk of the temperature rise of the power line is reduced. Meanwhile, after receiving the warning response signal, the user can further remotely control the electric equipment so as to increase the convenience of use.
Another advantage of the present invention is that it provides a power line temperature detection protection system and method and a temperature detection control device that do not require precise components and complex structures, and that are simple in manufacturing process and low in cost.
Other advantages and features of the present invention will become more fully apparent from the following detailed description, and may be learned by the practice of the invention as set forth hereinafter.
The present invention, which can achieve the foregoing and other objects and advantages, provides a power line temperature detection protection system comprising:
a power plug;
an electric device;
the power line comprises a live wire and a zero wire which are led out from the power plug and are respectively connected to the electric equipment; and
the temperature detection control device comprises a temperature sensing spring switch which is arranged on the power plug and connected with the live wire or the zero wire, a signal detection control unit which is arranged on the electric equipment, and a signal wire which is connected with the temperature sensing spring switch and the signal detection control unit, wherein the temperature change of the power plug is fed back through the temperature sensing spring switch by the voltage or current change of the signal wire, and the signal detection control unit provides an alarm response signal based on the voltage or current change of the signal wire.
According to an embodiment of the present invention, a first end of the temperature sensing dome switch is connected to one end of the live wire, and a second end of the temperature sensing dome switch is connected to the signal line, wherein the temperature sensing dome switch provides an on state or an off state according to a temperature of the power plug, and the signal detection control unit provides the warning response signal to at least one designated electronic device after feeding back the warning response signal to the signal detection control unit in a voltage or current variation of the signal line.
According to an embodiment of the present invention, a first end of the temperature sensing dome switch is connected to one end of the zero line, and a second end of the temperature sensing dome switch is connected to the signal line, wherein the temperature sensing dome switch provides an on state or an off state according to a temperature of the power plug, and the signal detection control unit provides the warning response signal to at least one specified electronic device after feeding back the warning response signal to the signal detection control unit in a voltage or current variation of the signal line.
According to one embodiment of the present invention, the temperature-sensitive dome switch is implemented as a relay that is turned on or off with temperature changes.
According to an embodiment of the present invention, when the temperature of the power plug increases to a preset dangerous value, the signal detection control unit provides the alarm response signal based on the voltage decrease of the signal line, relative to the expansion and disconnection of a dome of the temperature sensing dome switch.
According to an embodiment of the present invention, when the temperature of the power plug returns to a normal operating temperature, the signal detection control unit provides the alarm response signal based on the voltage rise of the signal line, relative to enabling a dome of the temperature sensing dome switch to be closed by cold shrinkage.
According to one embodiment of the present invention, the electric equipment comprises a power supply circuit, a load switching device with on-off state controlled by the signal detection control unit, and at least one load connected to the power supply circuit in an on-off controlled manner by the load switching device, wherein the power supply circuit is connected to the power supply plug in a power supply manner through the zero line and the live line, and the signal detection control unit is connected to the power supply circuit in a power supply manner so as to control the disconnection of the load switching device or the connection control of the power supply state of the load based on the voltage or current change of the signal line.
According to another aspect of the present invention, there is further provided a power line temperature detection protection system, comprising:
the power plug is internally provided with a temperature sensing spring switch;
the power line is led out from the power plug and is provided with a live wire and a zero wire, and a signal wire is led out from one end of the temperature sensing spring switch, wherein the other end of the temperature sensing spring switch is connected with the live wire or the zero wire; and
the electric equipment comprises a power supply circuit and a signal detection control unit which is connected with the power supply circuit in a power supply mode, wherein the power supply circuit is connected with the power plug in a power supply mode through a zero line and a fire wire in a power supply mode, so that the power supply is supplied in a power supply plug access mode, the signal detection control unit is connected with the temperature sensing dome switch through the signal line to form a loop between the signal line and the fire wire or the zero line, voltage and current changes of the signal line are related to the on-off state transition of the temperature sensing dome switch, temperature change information of the power plug can be fed back based on the electrical characteristics that the on-off state of the temperature sensing dome switch changes along with the temperature change, and the signal detection control unit is set to provide an alarm response signal based on the voltage or current change of the signal line, so that the alarm response signal is provided in response to the temperature change information of the power plug.
According to an embodiment of the present invention, the alert response signal is a control command for controlling the electric device to generate a corresponding alert action in response to the temperature change information of the power plug, where the alert action is at least one of an audio alert, a light alert, and a transmission of alert information to a designated electronic device.
According to one embodiment of the invention, the power plug is configured as a three-core power plug, and a ground wire led out from the power plug is further provided corresponding to the power wire, wherein the electric equipment is connected to the ground wire so as to be grounded and protected in a state that the power plug is connected to the mains.
According to one embodiment of the invention, the electric equipment further comprises a load switching device with the on-off state controlled by the signal detection control unit, and at least one load connected to the power supply circuit in a power supply manner controlled by the load switching device, wherein the signal detection control unit is further arranged to control the power supply state of the load switching device to be disconnected or connected based on the voltage or current change of the signal line.
According to one embodiment of the invention, the temperature-sensitive dome switch is configured to open based on expansion deformation, corresponding to the temperature-sensitive dome switch transitioning from an on state to an off state based on an increase in temperature.
According to one embodiment of the present invention, wherein an end of the temperature sensing dome switch opposite to the end from which the signal line is led is connected to the hot wire, a decrease in voltage of the signal line corresponds to a transition of the temperature sensing dome switch from an on state to an off state, wherein the signal detection control unit provides the warning response signal based on the decrease in voltage of the signal line to provide the warning response signal in accordance with an increase in temperature of the power plug.
According to one embodiment of the present invention, wherein an end of the temperature sensing dome switch opposite to the end from which the signal line is led is connected to the zero line, a decrease in voltage of the signal line corresponds to a transition of the temperature sensing dome switch from an on state to an off state, wherein the signal detection control unit provides the warning response signal based on the decrease in voltage of the signal line to provide the warning response signal according to an increase in temperature of the power plug.
According to one embodiment of the invention, the temperature-sensitive dome switch is configured to switch on based on expansion deformation, corresponding to the temperature-sensitive dome switch transitioning from an off state to an on state based on a temperature rise.
According to one embodiment of the present invention, wherein an end of the temperature sensing dome switch opposite to the end from which the signal line is led is connected to the hot wire, an increase in voltage of the signal line corresponds to a transition of the temperature sensing dome switch from an off state to an on state, wherein the signal detection control unit provides the warning response signal based on the increase in voltage of the signal line to provide the warning response signal in accordance with the increase in temperature of the power plug.
According to one embodiment of the present invention, wherein an end of the temperature-sensing dome switch opposite to the end from which the signal line is led is connected to the zero line, an increase in voltage of the signal line corresponds to a transition of the temperature-sensing dome switch from an off state to an on state, wherein the signal detection control unit provides the warning response signal based on the increase in voltage of the signal line to provide the warning response signal in accordance with the increase in temperature of the power plug.
According to another aspect of the present invention, there is further provided a temperature detection control device connected to a power plug and a powered device to sense a temperature change of the power plug, including:
the temperature sensing spring switch is arranged on the power plug, and the first end of the temperature sensing spring switch is connected with a live wire or a zero wire of a power wire so as to be disconnected or connected in coordination with the temperature change of the power plug;
the signal detection control unit is arranged on the electric equipment; and
the signal wire is connected between the second end of the temperature sensing shrapnel switch and the signal detection control unit, wherein the voltage or current change of the signal wire corresponds to the switching of the off and on states of the temperature sensing shrapnel switch and can feed back the temperature change of the power plug, and the signal detection control unit provides an alarm response signal based on the voltage or current change of the signal wire.
According to an embodiment of the present invention, when the temperature of the power plug increases to a preset dangerous value, the signal detection control unit provides the alarm response signal based on the voltage decrease of the signal line, relative to the expansion and disconnection of a dome of the temperature sensing dome switch.
According to an embodiment of the present invention, when the temperature of the power plug returns to a normal operating temperature, the signal detection control unit provides the alarm response signal based on the voltage rise of the signal line, relative to enabling a dome of the temperature sensing dome switch to be closed by cold shrinkage.
According to an embodiment of the present invention, the alarm response signal is a control instruction for controlling the temperature detection control device to generate a corresponding alarm action in response to the temperature change information of the power plug, wherein the alarm action is at least one of an audio alarm, a light alarm and a transmission of alarm information to a designated electronic device.
According to another aspect of the present invention, there is provided a temperature detection control device connected to a power plug and an electric apparatus, wherein the electric apparatus is electrically connected to the power plug via a neutral wire and a live wire of a power line led out from the power plug to be supplied with power in a state where the power plug is connected to an external power source, comprising:
the temperature sensing spring switch is arranged in the power plug in a state that one end of the temperature sensing spring switch is connected with the live wire or the zero wire, so as to sense the temperature change of the power plug and transmit the temperature change information of the power plug to the electric equipment;
The signal wire is led out from the other end of the temperature sensing spring switch and extends to the electric equipment from the power wire; and
the signal detection control unit is arranged on the electric equipment and is connected with the temperature sensing shrapnel switch through the signal wire so as to form a loop between the signal wire and the live wire or the zero wire, the voltage and current change of the signal wire is related to the change of the on-off state of the temperature sensing shrapnel switch, the temperature change information of the power plug can be fed back based on the electrical characteristic that the on-off state of the temperature sensing shrapnel switch changes along with the temperature change, and the signal detection control unit is arranged to provide an alarm response signal based on the voltage or the current change of the signal wire so as to provide the alarm response signal in response to the temperature change information of the power plug.
According to an embodiment of the present invention, the alarm response signal is a control instruction for controlling the temperature detection control device to generate a corresponding alarm action in response to a voltage or current change of the signal line, wherein the alarm action is at least one of an audio alarm, a light alarm, and a transmission of alarm information to a designated electronic device.
According to one embodiment of the present invention, the temperature-sensing dome switch is configured to be turned off based on expansion deformation, and the voltage of the signal line is reduced corresponding to the temperature-sensing dome switch being turned off based on an increase in temperature, and the signal detection control unit provides the warning response signal based on a decrease in voltage of the signal line to provide the warning response signal according to an increase in temperature of the power plug.
According to one embodiment of the present invention, the temperature-sensing dome switch is configured to be turned on based on expansion deformation, and the increase in voltage of the signal line corresponds to the temperature-sensing dome switch being turned on from an off state in response to the temperature-sensing dome switch being turned on based on an increase in temperature, wherein the signal detection control unit provides the warning response signal based on the increase in voltage of the signal line to provide the warning response signal in accordance with the increase in temperature of the power plug.
According to another aspect of the present invention, the present invention further provides a power line temperature detection protection method, which includes the following steps:
(A) A temperature sensing spring switch arranged on a power plug senses the temperature of the power plug, wherein the temperature sensing spring switch has the electrical characteristic that the on-off state of the temperature sensing spring switch changes along with the temperature change, and can feed back the temperature change of the power plug through the voltage or current change of a signal wire connected with the temperature sensing spring switch;
(B) A signal detection control unit arranged on electric equipment detects temperature change information of the power plug based on voltage or current change of the signal wire; and
(C) The signal detection control unit outputs an alarm response signal based on the temperature change information of the power plug.
According to an embodiment of the method of the present invention, in the step (C), the alert response signal is a control command for controlling the equipment to generate a corresponding alert action in response to a voltage or current change of the signal line, where the alert action is at least one of an audio alert, a light alert, and a transmission of alert information to a specified electronic device.
According to another aspect of the present invention, the present invention further provides a power line temperature detection protection method, which includes the following steps:
(a) A power line and a signal line are led out of a power plug, wherein the power line is provided with a live wire and a zero line, a temperature sensing spring switch is arranged in the power plug, the signal line is led out from one end of the temperature sensing spring switch, and the other end of the temperature sensing spring switch is connected with the live wire or the zero line;
(b) A signal detection control unit detects temperature change information of the power plug based on voltage or current change of the signal wire, wherein the signal detection control unit is arranged on electric equipment which is connected with the temperature sensing shrapnel switch through the signal wire, wherein the electric equipment is connected with the power plug through the power wire in a power supply way so as to form a loop between the signal wire and the live wire or the zero wire, and the voltage and current change of the signal wire is related to the change of the on-off state of the temperature sensing shrapnel switch, so that the temperature change information of the power plug can be fed back based on the electrical characteristic that the on-off state of the temperature sensing shrapnel switch changes along with the temperature change; and
(c) The signal detection control unit provides an alarm response signal based on the voltage or current change of the signal line so as to respond to the temperature change information of the power plug and provide the alarm response signal.
According to an embodiment of the present invention, in the step (c), the alert response signal is a control command for controlling the device to generate a corresponding alert action in response to a voltage or current change of the signal line, where the alert action is at least one of an audio alert, a light alert, and a transmission of alert information to a specified electronic device.
According to an embodiment of the method of the present invention, the temperature-sensing dome switch is configured to be turned off based on expansion deformation, and the voltage of the signal line is reduced corresponding to the temperature-sensing dome switch being turned from the on state to the off state in response to the temperature-sensing dome switch being turned on based on an increase in temperature, and the signal detection control unit provides the warning response signal corresponding to the reduction in the voltage of the signal line in the step (c).
According to an embodiment of the method of the present invention, the temperature-sensing dome switch is set to be turned on based on expansion deformation, and the voltage of the signal line is increased corresponding to the temperature-sensing dome switch being turned on from the off state corresponding to the temperature-sensing dome switch being turned on based on an increase in temperature, and the signal detection control unit provides the warning response signal corresponding to the increase in the voltage of the signal line in the step (c).
Further objects and advantages of the present invention will become fully apparent from the following description and the accompanying drawings.
These and other objects, features and advantages of the present invention will become more fully apparent from the following detailed description, the accompanying drawings and the appended claims.
Drawings
Fig. 1A and 1B are schematic views of a power line temperature detection protection system according to a first preferred embodiment of the present invention.
Fig. 2A and 2B are schematic views of a power line temperature detection protection system according to a second preferred embodiment of the present invention.
Detailed Description
The following description is presented to enable one of ordinary skill in the art to make and use the invention. The preferred embodiments in the following description are by way of example only and other obvious variations will occur to those skilled in the art. The basic principles of the invention defined in the following description may be applied to other embodiments, variations, modifications, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
It will be appreciated by those skilled in the art that in the present disclosure, the terms "longitudinal," "transverse," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," etc. refer to an orientation or positional relationship based on that shown in the drawings, which is merely for convenience of description and to simplify the description, and do not indicate or imply that the apparatus or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore the above terms should not be construed as limiting the present invention.
It will be understood that the terms "a" and "an" should be interpreted as referring to "at least one" or "one or more," i.e., in one embodiment, the number of elements may be one, while in another embodiment, the number of elements may be plural, and the term "a" should not be interpreted as limiting the number.
Fig. 1A shows a power line temperature detection protection device, system and method according to a first preferred embodiment of the present invention, which has the actions of power-off or power-on according to temperature, and actively analyzes external signals and makes corresponding response actions according to analysis results. The power line temperature detection protection system 1 comprises a power plug 10, an electric device 20 and a temperature detection control device 30. The power plug 10 is connected with the electric equipment 20. The temperature detection control device 30 is respectively connected between the power plug 10 and the electric device 20 to sense the temperature change of the power plug 10, and the electric device 20 is disconnected in an overheat state, and the electric device 20 returns to the electric connection in a normal state, and the temperature detection control device 30 can provide an alarm response signal for the user, so that the user can obtain the use condition of the electric device 20 in real time besides ensuring the use safety of the user and the electric device. In particular, the warning response signal may be an alarm or a buzzer, or may be a message or information, which may be transmitted to various electronic devices such as a mobile phone, an IPAD or a computer of the user by using a network, so that the user can instantly grasp the actual situation of the electric device 20, and even remotely control the operation of the electric device 20. In addition, the overheat state indicates that the temperature of the power plug 10 rises to a preset dangerous value. The normal state indicates that the temperature of the power plug 10 returns to a normal operating temperature.
In the embodiment of the present invention, the power line temperature detection protection system 1 further includes a power line 40, which includes a live line L and a neutral line N. It will be appreciated that the power cord 40 may also include a ground cord G. It should be noted that the power line 40 may not be provided with the ground line G, which is not a limitation of the present invention. The ground line G, the live line L and the neutral line N are led out from the power plug 10, and are connected to the electric equipment 20. In other words, the ground line G, the live line L, and the neutral line N of the power cord 40 have two ends, respectively, one end of which is connected to the powered device 20, and the other end of which is connected to the power plug 10, and connected to the outside through the power plug 10, so as to obtain power to the powered device 20. Specifically, the temperature detection control device 30 is connected to one end of the live wire L to sense the voltage value of the live wire L, so as to further determine the temperature of the power plug 10, and when the temperature rises to the preset dangerous value, the temperature detection control device 30 sends a stop control signal to stop the operation of the electric equipment 20 and simultaneously provides the warning response signal, and when the temperature falls back to the working temperature, the temperature detection control device 30 is connected to send a start control signal to restart the operation of the electric equipment 20 and simultaneously provide the warning response signal. In other words, after the temperature detection control device 30 receives the temperature information of the power plug 10, the temperature detection control device 30 determines and controls the disconnection or connection of the electric device 20, and correspondingly sends out the alarm response signal, where the alarm response signal may be selectively sent to any electronic device defined by the user.
In the embodiment of the present invention, the electric device 20 includes an electric device body 21, a power circuit 22, a load switching device 23 and a load 24. The power supply circuit 22, the load switching device 23 and the load 24 are respectively provided to the electric appliance body 21. One ends of the live wire L and the neutral wire N of the power line 40 are respectively connected to the power circuit 22 of the electric device 20. The load switch device 23 is connected to the power supply circuit 22, the load 24, and the temperature detection control device 30, respectively. The temperature detection control device 30 is connected to the load switch device 23, the live line L of the power line 40 and the power circuit 22 respectively, so as to further analyze, judge and control the load switch device 23 to start or stop when the voltage value of the live line L is detected, and the temperature detection control device 30 can also provide the alarm response signal. It can be understood that the temperature detection control device 30 forms a loop with the live wire L, so that the temperature detection control device 30 obtains the temperature change of the power plug 10, controls the disconnection or connection of the load switching device 23 to control the power supply state of at least one load 24 of the electric equipment 20, and provides the corresponding alarm response signal corresponding to various states. In other words, the temperature detection control device 30 controls the on-off state of the load switch device 23 and the power supply state of the load 24 according to the information of the temperature change of the power plug 10 and provides the corresponding alarm response signal.
In the embodiment of the invention, the temperature detection control device 30 includes a temperature sensing dome switch 31, a signal line 32 and a signal detection control unit 33. The first end 311 of the temperature sensing spring switch 31 is connected to the live wire L and is embedded in the power plug 10, and the signal line 32 is led out from the second end 312 of the temperature sensing spring switch 31 and extends from the power line 40 to the signal detection control unit 33. The signal line 32 connects the temperature sensing dome switch 31 and the signal detection control unit 33. In other words, the second end 312 of the temperature sensing dome switch 31 is connected to the signal detection control unit 33 through the signal line 32. The signal detection control unit 33 is connected to the power circuit 22 and the load switch device 23, and is disposed on the electrical appliance body 21 of the electrical equipment 20. When the temperature of the power plug 10 changes, the voltage value of the live wire L of the power cord 40 will follow, and the temperature sensing dome switch 31 will have a conducting state and an disconnecting state after sensing the change of the voltage, and the two states are transmitted to the signal detection control unit 33 via the signal line 32, and then the load switch device 23 of the electric equipment 20 is controlled to be disconnected or connected after being judged by the signal detection control unit 33. In particular, the signal detection control unit 33 may also provide the alert response signal to the user, so that the user receives the relevant message immediately. The alarm response signal can be implemented as an alarm, a buzzer or a message, wherein the alarm response signal can be directly transmitted to various electronic devices appointed by a user in a wired or wireless (WiFi or Bluetooth) remote transmission mode.
It should be noted that the signal detection control unit 33 may be implemented as a processor unit (e.g., MCU) and/or a communication unit of the electric device 20 itself. Further, the various modules of the electric equipment 20 can be utilized to perform corresponding response, so that the cost is reduced, the electric equipment 20 can be better protected, the richer intelligent control is realized, and the electric equipment is more convenient in practical use.
Further, when the temperature of the power plug 10 increases or decreases, the temperature-sensing dome switch 31 is directly turned on or turned off after sensing a temperature change, and forms a voltage signal, which is transmitted to the signal detection control unit 33 through the signal line 32, and then the signal detection control unit 33 detects and receives the voltage signal to determine and send a control signal to control the switching device 23 to be turned off or turned on. And, the warning response signal is simultaneously issued by the signal detection control unit 33. The warning response signal can be directly transmitted to the electronic device appointed by the user, so that the user can immediately acquire the related information. In other words, when the temperature of the power plug 10 increases to a preset dangerous value, the temperature of the temperature-sensing dome switch 31 is increased, and then the dome 313 is expanded and disconnected, at this time, the signal detection control unit 33 detects the voltage signal that the dome 313 is expanded and disconnected through the signal line 32, and the signal detection control unit 33 sends a stop control signal to control the switching device 23 of the electric equipment 20 to be closed, and simultaneously provides the warning response signal. When the temperature of the power plug 10 returns to the normal working temperature, the temperature of the temperature-sensing spring switch 31 is relatively returned to the normal temperature, and then the spring 313 therein is closed by cold contraction, at this time, the signal detection control unit 33 detects the voltage signal of the cold contraction closing of the spring 313 through the signal line 32, and the signal detection control unit 33 sends a start control signal after analysis and judgment to control the switch device 23 of the electric equipment 20 to be opened and simultaneously provide the warning response signal.
In another variant, as shown in fig. 1B, the powered device 20 further includes a smart chip 25, which can directly replace the signal detection control unit 33, for controlling the load switching device 23 and providing the alarm response signal. Alternatively, the smart chip 25 is connected to the signal detection control unit 33, wherein after receiving the control signal, the smart chip 25 may perform subsequent various responses, including controlling the load switching device 23, providing the alarm response signal, and the like. Particularly, when the electric equipment 20 is provided with the sounding/lighting/communication module, various modules can be directly utilized to perform corresponding response actions, so as to realize richer intelligent control. For example: after the smart chip 25 is connected to the signal detection control unit 33, it can send the corresponding alarm response signal to the specified electronic device, such as a mobile phone, an IPAD, a computer, etc.
In the embodiment of the present invention, the temperature-sensing dome switch 31 may be implemented as a relay, and may be turned on or off as the temperature increases, or may be turned on or off as the temperature decreases. The temperature sensing shrapnel switch 31 is connected between the live wire L and the signal wire 32. The live line L forms a loop with the signal line 32. In this loop, the voltage value on the signal line 32 may change, i.e., increase with increasing temperature or decrease with increasing temperature. The signal detection control unit 33 detects a voltage change and makes a corresponding action according to the voltage change.
In an embodiment of the present invention, the signal detection control unit 33 is disposed on the electric device 20 and connected to the temperature sensing dome switch 31 via the signal line 32 to form a loop between the signal line 32 and the live wire L, wherein a voltage change of the signal line 32 is associated with a transition of an on-off state of the temperature sensing dome switch 31, so as to be capable of feeding back temperature change information of the power plug 10 based on an electrical characteristic of the transition of the on-off state of the temperature sensing dome switch 31 with the temperature change, wherein the signal detection control unit 33 is configured to control the on-off state of the load switching device 23 based on the voltage change of the signal line 32, and to provide the alarm response signal in response to the off state of the load switching device 23, so as to control the on-off state of the load switching device 23 and provide the alarm response signal according to the temperature change information of the power plug 10.
Further, when everything is normal, the temperature of the power plug 10 is in a normal range, and at this time, the live wire L has a high level (voltage with a positive voltage value), the temperature-sensing dome switch 31 has two states of on and off, resulting in different voltages at two ends of the temperature-sensing dome switch 31, wherein a first end is the end of the temperature-sensing dome switch 31 connected to the live wire L, and a second end is the end of the temperature-sensing dome switch 31 connected to the signal detection control unit 33, and at this time, the signal detection control unit 33 detects that a high level (high voltage) is received when the voltage at the first end is the same as the voltage at the second end. However, when the temperature of the power plug 10 increases, the temperature-sensing dome switch 31 expands and opens, and the voltage difference between the first end and the second end of the temperature-sensing dome switch 31 is large, and the signal detection control unit 33 detects a low level (low voltage), which indicates that the power plug 10 is too hot, and the switching device 23 is further controlled to be powered off to protect the safety of the user or the electric appliance. In addition, when the temperature slowly decreases and after all the switches are restored to normal, the temperature sensing dome switch 31 is contracted and turned on, and the signal detection control unit 33 detects that a high level (high voltage) is received, which means that the plug temperature is normal, and the switch device 23 is turned back on for continuous use. It should be noted that, of course, the temperature sensing dome switch 31 may be turned off when the temperature is normal, turned on when the temperature is raised, and the signal detection control unit 33 detects that a low level is received when the temperature is too high, and the signal detection control unit 33 detects that a high level is received when the temperature is recovered to be normal. This is not a limitation of the present invention.
The invention also comprises a power line temperature detection protection method, which comprises the following steps:
(A) A temperature sensing spring switch 31 disposed on a power plug 10 for sensing the temperature of the power plug 10, wherein the temperature sensing spring switch 31 is turned on or off to form a voltage signal;
(B) A signal detection control unit 33 disposed on a powered device 20 receives the voltage signal to control a load switching device 23 of the powered device 20 to be turned on or off; and
(C) The signal detection control unit 33 outputs an alarm response signal.
The first end of the temperature sensing spring switch 31 is connected to a live wire L of a power line 40, the second end of the temperature sensing spring switch 31 is connected to the signal detection control unit 33 through a signal line 32, when the temperature of the power plug 10 is normal, the voltage value of the first end is the same as the voltage value of the second end, and the signal detection control unit 33 detects that a high level (high voltage) is received. It can be understood that the high voltage signal indicates that the power plug 10 is at normal temperature, and the temperature sensing dome switch 31 is turned on, and the switch device 23 is in an activated state.
Wherein a first end of the temperature sensing dome switch 31 is connected to the live wire L of the power cord 40, a second end of the temperature sensing dome switch 31 is connected to the signal detection control unit 33 through the signal cord 32, and when the temperature of the power plug 10 rises, the voltage value of the first end is different from the voltage value of the second end, and the signal detection control unit 33 detects that a low level (low voltage) is received. It will be appreciated that the low voltage signal at this point is indicative of a rise in temperature of the power plug 10, when the temperature sensitive dome switch 31 is open and the switch device is in an off state.
The signal detection control unit 33 is disposed on the electric device 20 and connected to the temperature sensing dome switch 31 via the signal line 32, so as to form a loop between the signal line 32 and the live line L of the power line 40.
According to the step (a), the temperature sensing dome switch 31 is turned on or off along with the temperature change to form the voltage signals with different voltage values, and is used for determining the temperature of the power plug 10.
According to the above step (B), the signal detection control unit 33 detects the reception of the voltage signal through the signal line 32, and turns off the load switching device 23 when the temperature of the power plug 10 is determined to be high by analysis, and turns on the load switching device 23 when the temperature of the power plug 10 is determined to be normal by analysis.
According to the step (C), the alarm response signal is implemented as an alarm, a buzzer or a message, wherein the alarm response signal is directly transmitted to various electronic devices designated by the user by using a wired or wireless (WiFi or bluetooth) remote transmission mode.
According to the step (C), the warning response signal is directly transmitted to various electronic devices such as a mobile phone, an IPAD or a notebook computer.
The invention also comprises a power line temperature detection protection method, which comprises the following steps:
(a) A signal wire 32 is led out of a power plug 10, and the signal wire 32 is extended from the power wire 40 to an electric device 20, wherein the power wire 40 is led out of the power plug 10 and is provided with a live wire L and a zero wire N, a temperature sensing spring switch 31 is arranged in the power plug 10, the signal wire 32 is led out from one end of the temperature sensing spring switch 31, and the other end of the temperature sensing spring switch 31 is connected with the live wire L of the power wire 40;
(b) A signal detection control unit 33 controls the on-off state of a load switch device 23 of the electric equipment 20 based on the voltage change of the signal wire 32 to control the power supply state of at least one load 24 of the electric equipment, wherein the electric equipment 20 is in power supply connection with the power plug 10 through the power wire 40 led out from the power plug 10, wherein the signal detection control unit 33 is arranged on the electric equipment 20 and connected with the temperature sensing dome switch 31 through the signal wire 32 to form a loop between the signal wire 32 and the live wire L, and the voltage change of the signal wire 32 is related to the on-off state transition of the temperature sensing dome switch 31 to enable feedback of temperature change information of the power plug 10 based on the electrical characteristic that the on-off state of the temperature sensing dome switch 31 is transited along with the temperature change; and
(c) The signal detection control unit 33 provides an alarm response signal in response to the off state of the load switch device 23.
In the step (c), the warning response signal is a control command for controlling the electric device 20 to generate a corresponding warning action in response to the off state of the load switch device 23, wherein the warning action is at least one of a sound warning, a light warning and a transmission of warning information to a designated electronic device.
Wherein the temperature-sensing dome switch 31 is configured to be turned off based on expansion deformation, and the voltage of the signal line 32 is reduced corresponding to the temperature-sensing dome switch 31 being turned off based on a temperature increase in the on state, and the signal detection control unit 33 controls the load switching device 23 to be turned off based on the voltage reduction of the signal line 32 in the step (b).
Wherein the temperature-sensing dome switch 31 is configured to be turned on based on expansion deformation, and the voltage of the signal line 32 increases corresponding to the temperature-sensing dome switch 31 changing from the off state to the on state in response to the temperature-sensing dome switch 31 changing from the off state to the on state, and the signal detection control unit 33 controls the load switching device 23 to be turned off based on the voltage of the signal line 32 in the step (b).
Fig. 2A shows a power line temperature detection protection device, system and method according to a second preferred embodiment of the present invention, which has the actions of power-off or power-on according to temperature, and actively analyzes external signals and makes corresponding response actions according to analysis results. The power line temperature detection protection system 1 comprises a power plug 10, an electric device 20 and a temperature detection control device 30. The power plug 10 is connected with the electric equipment 20. The temperature detection control device 30 is respectively connected between the power plug 10 and the electric device 20 to sense the temperature change of the power plug 10, and the electric device 20 is disconnected in an overheat state, and the electric device 20 returns to the electric connection in a normal state, and the temperature detection control device 30 can provide an alarm response signal for the user, so that the user can obtain the use condition of the electric device 20 in real time besides ensuring the use safety of the user and the electric device. In addition, the overheat state indicates that the temperature of the power plug 10 rises to a preset dangerous value. The normal state indicates that the temperature of the power plug 10 returns to a normal operating temperature.
In the embodiment of the present invention, the power line temperature detection protection system 1 further includes a power line 40, which includes a live line L and a neutral line N. It should be understood that the power line 40 may also include a ground line G, and the ground line G is not required, which is not a limitation of the present invention. The ground line G, the live line L and the neutral line N are led out from the power plug 10, and are connected to the electric equipment 20. In other words, the ground line G, the live line L, and the neutral line N have two ends, respectively, one end of which is connected to the electric device 20, and the other end of which is connected to the power plug 10, and are connected to the outside through the power plug 10, so as to obtain power to the electric device 20. Specifically, the temperature detection control device 30 is connected to one end of the neutral line N to sense the voltage value of the neutral line N, so as to further determine the temperature of the power plug 10, and when the temperature rises to the preset dangerous value, the temperature detection control device 30 sends a stop control signal to stop the operation of the electric equipment 20 and simultaneously provide the warning response signal, and when the temperature falls back to the working temperature, the temperature detection control device 30 is connected to send a start control signal to restart the operation of the electric equipment 20 and simultaneously provide the warning response signal.
In the embodiment of the present invention, the electric device 20 includes an electric device body 21, a power circuit 22, a load switching device 23 and a load 24. The power supply circuit 22, the load switching device 23 and the load 24 are respectively provided to the electric appliance body 21. One ends of the live wire L and the neutral wire N are respectively connected to the power circuit 22 of the electric device 20. The load switch device 23 is connected to the power supply circuit 22, the load 24, and the temperature detection control device 30, respectively. The temperature detection control device 30 is connected to the load switch device 23, the zero line N and the power circuit 22 respectively, so as to further analyze, judge and control the load switch device 23 to be started or powered off after detecting the voltage value of the zero line N, and the temperature detection control device 30 can also provide the alarm response signal. It can be appreciated that the temperature detection control device 30 forms a loop with the neutral line N, so that the temperature detection control device 30 obtains the temperature change of the power plug 10, controls the disconnection or connection of the load switching device 23 to control the power supply state of at least one load 24 of the electric equipment 20, and provides the corresponding alarm response signal corresponding to various states. In other words, the temperature detection control device 30 controls the on-off state of the load switch device 23 and the power supply state of the load 24 according to the information of the temperature change of the power plug 10 and provides the corresponding alarm response signal.
In the embodiment of the invention, the temperature detection control device 30 includes a temperature sensing dome switch 31, a signal line 32 and a signal detection control unit 33. The first end 311 of the temperature sensing spring switch 31 is connected to the neutral wire N and is disposed in the power plug 10, and the signal wire 32 is led out from the second end 312 of the temperature sensing spring switch 31 and extends from the power wire 40 to the signal detection control unit 33. The signal line 32 connects the temperature sensing dome switch 31 and the signal detection control unit 33. In other words, the second end 312 of the temperature sensing dome switch 31 of the temperature sensing control device 30 is connected to the signal sensing control unit 33 of the temperature sensing control device 30 through the signal line 32 of the temperature sensing control device 30. The signal detection control unit 33 is connected to the power circuit 22 and the load switch device 23, and is disposed on the electrical appliance body 21 of the electrical equipment 20. When the temperature of the power plug 10 changes, the voltage value of the neutral line N will follow, and the temperature sensing dome switch 31 will have a conducting state and an disconnecting state after sensing the voltage change, and the two states are transmitted to the signal detection control unit 33 via the signal line 32, and then the load switch device 23 of the electric equipment 20 is controlled to be disconnected or connected after being judged by the signal detection control unit 33. In particular, the signal detection control unit 33 may also provide the alert response signal to the user, so that the user receives the relevant message immediately. The alarm response signal can be implemented as an alarm, a buzzer or a message, wherein the alarm response signal can be directly transmitted to various electronic devices appointed by a user in a wired or wireless (WiFi or Bluetooth) remote transmission mode.
It should be noted that the signal detection control unit 33 may be implemented as a processor unit (e.g., MCU) and/or a communication unit of the electric device 20 itself. Further, the various modules of the electric equipment 20 can be utilized to perform corresponding response, so that the cost is reduced, the electric equipment 20 can be better protected, the richer intelligent control is realized, and the electric equipment is more convenient in practical use.
Further, when the temperature of the power plug 10 increases or decreases, the temperature-sensing dome switch 31 is directly turned on or turned off after sensing a temperature change, and forms a voltage signal, which is transmitted to the signal detection control unit 33 through the signal line 32, and then the signal detection control unit 33 detects and receives the voltage signal to determine and send a control signal to control the switching device 23 to be turned off or turned on. And, the warning response signal is simultaneously issued by the signal detection control unit 33. The warning response signal can be directly transmitted to the electronic device appointed by the user, so that the user can immediately acquire the related information. In other words, when the temperature of the power plug 10 increases to a preset dangerous value, the temperature of the temperature-sensing dome switch 31 is increased, and then the dome 313 is expanded and disconnected, at this time, the signal detection control unit 33 detects the voltage signal that the dome 313 is expanded and disconnected through the signal line 32, and the signal detection control unit 33 sends a stop control signal to control the switching device 23 of the electric equipment 20 to be closed, and simultaneously provides the warning response signal. When the temperature of the power plug 10 returns to the normal working temperature, the temperature of the temperature-sensing spring switch 31 is relatively returned to the normal temperature, and then the spring 313 therein is closed by cold contraction, at this time, the signal detection control unit 33 detects the voltage signal of the cold contraction closing of the spring 313 through the signal line 32, and the signal detection control unit 33 sends a start control signal after analysis and judgment to control the switch device 23 of the electric equipment 20 to be opened and simultaneously provide the warning response signal.
In another variant, as shown in fig. 2B, the powered device 20 further includes a smart chip 25, which can directly replace the signal detection control unit 33, for controlling the load switching device 23 and providing the alarm response signal. Alternatively, the smart chip 25 is connected to the signal detection control unit 33, wherein after receiving the control signal, the smart chip 25 may perform subsequent various responses, including controlling the load switching device 23, providing the alarm response signal, and the like. Particularly, when the electric equipment 20 is provided with the sounding/lighting/communication module, various modules can be directly utilized to perform corresponding response actions, so as to realize richer intelligent control. For example: after the smart chip 25 is connected to the signal detection control unit 33, it can send the corresponding alarm response signal to the specified electronic device, such as a mobile phone, an IPAD, a computer, etc.
In the embodiment of the present invention, the temperature-sensing dome switch 31 may be implemented as a relay, and may be turned on or off as the temperature increases, or may be turned on or off as the temperature decreases. The temperature sensing spring switch 31 is connected between the zero line N and the signal line 32. The neutral line N forms a loop with the signal line 32. In this loop, the voltage value on the signal line 32 may change, i.e., increase with increasing temperature or decrease with increasing temperature. The signal detection control unit 33 detects a voltage change and makes a corresponding action according to the voltage change.
In an embodiment of the present invention, the signal detection control unit 33 is disposed on the electric device 20 and connected to the temperature sensing dome switch 31 via the signal line 32 to form a loop between the signal line 32 and the zero line N, where a voltage change of the signal line 32 is related to a transition of an on-off state of the temperature sensing dome switch 31, so as to be capable of feeding back temperature change information of the power plug 10 based on an electrical characteristic that the on-off state of the temperature sensing dome switch 31 transitions with a temperature change, wherein the signal detection control unit 33 is configured to control the on-off state of the load switching device 23 based on the voltage change of the signal line 32, and provide the alarm response signal in response to the off state of the load switching device 23, so as to control the on-off state of the load switching device 23 and provide the alarm response signal according to the temperature change information of the power plug 10.
Further, when everything is normal, the temperature of the power plug 10 falls within a normal range, and at this time, the zero line N has a zero level (a voltage with a zero voltage value), the temperature sensing dome switch 31 has two states of the on state and the off state, resulting in that the voltages at the two ends of the temperature sensing dome switch 31 are different or the same, wherein the first end is the end of the temperature sensing dome switch 31 connected to the zero line N, and the second end is the end of the temperature sensing dome switch 31 connected to the signal detection control unit 33, and at this time, the signal detection control unit 33 detects that a zero level (a voltage value is close to zero) is received when the voltage at the first end is the same as the voltage at the second end. However, when the temperature of the power plug 10 increases, the temperature-sensing dome switch 31 expands and opens, and the voltage difference between the first end and the second end of the temperature-sensing dome switch 31 is large, and the signal detection control unit 33 detects a low level (negative voltage), which indicates that the power plug 10 is too hot, and the switching device 23 is further controlled to be powered off to protect the safety of the user or the electric appliance. In addition, when the temperature slowly decreases and after all the temperature returns to normal, the temperature sensing dome switch 31 is contracted and turned on, and the signal detection control unit 33 detects that a zero level (zero voltage) is received, which indicates that the plug temperature is normal, and the switch device 23 returns to be turned on for further use. It should be noted that, of course, the temperature sensing dome switch 31 may be turned off when the temperature is normal, turned on when the temperature is raised, and the signal detection control unit 33 detects that a zero level is received when the temperature is too high, and the signal detection control unit 33 detects that a low level is received when the temperature is recovered to be normal. This is not a limitation of the present invention.
The invention also comprises a power line temperature detection protection method, which comprises the following steps:
(A) A temperature sensing spring switch 31 disposed on a power plug 10 senses the temperature of the power plug 10, and the temperature sensing spring switch 31 is turned on or off to form a voltage signal;
(B) A signal detection control unit 33 disposed on a powered device 20 receives the voltage signal to control a load switching device 23 of the powered device 20 to be turned on or off; and
(C) The signal detection control unit 33 outputs an alarm response signal.
The first end of the temperature sensing spring switch 31 is connected to a zero line N of a power line 40, the second end of the temperature sensing spring switch 31 is connected to the signal detection control unit 33 through a signal line 32, when the temperature of the power plug 10 is normal, the voltage value of the first end is the same as the voltage value of the second end, and the signal detection control unit 33 detects that a high level (high voltage) is received. It can be understood that the high voltage signal indicates that the power plug 10 is at normal temperature, and the temperature sensing dome switch 31 is turned on, and the switch device 23 is in an activated state.
Wherein a first end of the temperature-sensing dome switch 31 is connected to the neutral line N of the power line 40, a second end of the temperature-sensing dome switch 31 is connected to the signal detection control unit 33 through the signal line 32, and when the temperature of the power plug 10 rises, the voltage value of the first end is different from the voltage value of the second end, and the signal detection control unit 33 detects that a low level (low voltage) is received. It will be appreciated that the low voltage signal at this point is indicative of a rise in temperature of the power plug 10, when the temperature sensitive dome switch 31 is open and the switch device is in an off state.
The signal detection control unit 33 is disposed on the electric device 20 and connected to the temperature sensing dome switch 31 via the signal line 32, so as to form a loop between the signal line 32 and the neutral line N.
According to the step (a), the temperature sensing dome switch 31 is turned on or off along with the temperature change to form the voltage signals with different voltage values, and is used for determining the temperature of the power plug 10.
According to the above step (B), the signal detection control unit 33 detects the reception of the voltage signal through the signal line 32, and turns off the load switching device 23 when the temperature of the power plug 10 is determined to be high by analysis, and turns on the load switching device 23 when the temperature of the power plug 10 is determined to be normal by analysis.
According to the step (C), the alarm response signal is implemented as an alarm, a buzzer or a message, wherein the alarm response signal is directly transmitted to various electronic devices designated by the user by using a wired or wireless (WiFi or bluetooth) remote transmission mode.
According to the step (C), the warning response signal is directly transmitted to various electronic devices such as a mobile phone, an IPAD or a notebook computer.
The invention also comprises a power line temperature detection protection method, which comprises the following steps:
(a) A signal wire 32 is led out of a power plug 10, and the signal wire 32 is extended from the power wire 40 to an electric device 20, wherein the power wire 40 is led out of the power plug 10 and is provided with a live wire L and a zero wire N, a temperature sensing spring switch 31 is arranged in the power plug 10, the signal wire 32 is led out from one end of the temperature sensing spring switch 31, and the other end of the temperature sensing spring switch 31 is connected with the zero wire N;
(b) A signal detection control unit 33 controls the on-off state of a load switch device 23 of the electric equipment 20 based on the voltage change of the signal wire 32 to control the power supply state of at least one load 24 of the electric equipment, wherein the electric equipment 20 is in power supply connection with the power plug 10 through the power wire 40 led out from the power plug 10, wherein the signal detection control unit 33 is arranged on the electric equipment 20 and connected with the temperature sensing dome switch 31 through the signal wire 32 to form a loop between the signal wire 32 and the zero line N, and the voltage change of the signal wire 32 is related to the change of the on-off state of the temperature sensing dome switch 31 to enable feedback of the temperature change information of the power plug 10 based on the electrical characteristic that the on-off state of the temperature sensing dome switch 31 changes along with the temperature change; and
(c) The signal detection control unit 33 provides an alarm response signal in response to the off state of the load switch device 23.
In the step (c), the warning response signal is a control command for controlling the electric device 20 to generate a corresponding warning action in response to the off state of the load switch device 23, wherein the warning action is at least one of a sound warning, a light warning and a transmission of warning information to a designated electronic device.
Wherein the temperature-sensing dome switch 31 is configured to be turned off based on expansion deformation, and the voltage of the signal line 32 is reduced corresponding to the temperature-sensing dome switch 31 being turned off based on a temperature increase in the on state, and the signal detection control unit 33 controls the load switching device 23 to be turned off based on the voltage reduction of the signal line 32 in the step (b).
Wherein the temperature-sensing dome switch 31 is configured to be turned on based on expansion deformation, and the voltage of the signal line 32 increases corresponding to the temperature-sensing dome switch 31 changing from the off state to the on state in response to the temperature-sensing dome switch 31 changing from the off state to the on state, and the signal detection control unit 33 controls the load switching device 23 to be turned off based on the voltage of the signal line 32 in the step (b).
It will be appreciated by persons skilled in the art that the embodiments of the invention described above and shown in the drawings are by way of example only and are not limiting.
The objects of the present invention have been fully and effectively achieved. The functional and structural principles of the present invention have been shown and described in the examples and embodiments of the invention may be modified or practiced without departing from the principles described.

Claims (31)

1. A power line temperature detection protection system, comprising:
a power plug;
an electric device;
the power line comprises a live wire and a zero wire which are led out from the power plug and are respectively connected to the electric equipment; and
the temperature detection control device comprises a temperature sensing spring switch which is arranged on the power plug and connected with the live wire or the zero wire, a signal detection control unit which is arranged on the electric equipment, and a signal wire which is connected with the temperature sensing spring switch and the signal detection control unit, wherein the temperature change of the power plug is fed back through the temperature sensing spring switch by the voltage or current change of the signal wire, and the signal detection control unit provides an alarm response signal based on the voltage or current change of the signal wire.
2. The power cord temperature detection protection system according to claim 1, wherein a first end of the temperature sensing dome switch is connected to one end of the live wire, and a second end of the temperature sensing dome switch is connected to the signal cord, wherein the temperature sensing dome switch provides an on state or an off state according to the temperature of the power plug, and the signal detection control unit provides the warning response signal to at least one designated electronic device after feeding back the voltage or current variation of the signal cord to the signal detection control unit.
3. The power line temperature detection protection system according to claim 1, wherein a first end of the temperature sensing dome switch is connected to an end of the zero line, and a second end of the temperature sensing dome switch is connected to the signal line, wherein the temperature sensing dome switch provides an on state or an off state according to a temperature of the power plug, and the signal detection control unit provides the warning response signal to at least one designated electronic device after feeding back the voltage or current variation of the signal line to the signal detection control unit.
4. A power line temperature detection protection system according to claim 2 or 3, wherein the temperature sensing dome switch is implemented as a relay that is turned on or off with temperature changes.
5. The power line temperature detection and protection system according to claim 2 or 3, wherein the signal detection control unit provides the warning response signal based on a decrease in voltage of the signal line, when the temperature of the power plug increases to a preset dangerous value, with respect to an expansion and disconnection of a dome of the temperature sensing dome switch.
6. The power line temperature detection and protection system according to claim 2 or 3, wherein the signal detection control unit provides the warning response signal based on an increase in voltage of the signal line when the temperature of the power plug returns to a normal operation temperature, with respect to cold-shrink closing of a dome of the temperature sensing dome switch.
7. The power line temperature detection protection system according to claim 1, wherein the electric equipment comprises a power circuit, a load switching device whose on-off state is controlled by the signal detection control unit, and at least one load connected to the power circuit in an on-off controlled manner by the load switching device, wherein the power circuit is connected to the power plug in a power-on controlled manner via the neutral line and the live line, and the signal detection control unit is connected to the power circuit in a power-on controlled manner to control the load switching device to disconnect or connect to control the power supply state of the load based on the voltage or current variation of the signal line.
8. A power line temperature detection protection system, comprising:
the power plug is internally provided with a temperature sensing spring switch;
the power line is led out from the power plug and is provided with a live wire and a zero wire, and a signal wire is led out from one end of the temperature sensing spring switch, wherein the other end of the temperature sensing spring switch is connected with the live wire or the zero wire; and
the electric equipment comprises a power supply circuit and a signal detection control unit which is connected with the power supply circuit in a power supply mode, wherein the power supply circuit is connected with the power plug in a power supply mode through a zero line and a fire wire in a power supply mode, so that the power supply is supplied in a power supply plug access mode, the signal detection control unit is connected with the temperature sensing dome switch through the signal line to form a loop between the signal line and the fire wire or the zero line, voltage and current changes of the signal line are related to the on-off state transition of the temperature sensing dome switch, temperature change information of the power plug can be fed back based on the electrical characteristics that the on-off state of the temperature sensing dome switch changes along with the temperature change, and the signal detection control unit is set to provide an alarm response signal based on the voltage or current change of the signal line, so that the alarm response signal is provided in response to the temperature change information of the power plug.
9. The power line temperature detection protection system according to claim 8, wherein the alarm response signal is a control command for controlling the electric device to generate a corresponding alarm action in response to temperature change information of the power plug, wherein the alarm action is at least one of an audible alarm, a light alarm, and a transmission of alarm information to a designated electronic device.
10. The power cord temperature-detecting and protecting system according to claim 9, wherein said power plug is configured as a three-core power plug, and further has a ground wire led out from said power plug corresponding to said power cord, wherein said electric device is connected to said ground wire to be ground-protected in a state where said power plug is connected to the utility power.
11. The power line temperature detection protection system of claim 9, wherein the powered device further comprises a load switching device whose on-off state is controlled by the signal detection control unit, and at least one load connected to the power supply circuit in an on-off controlled manner by the load switching device, wherein the signal detection control unit is further configured to control the power supply state of the load in an off-or connected manner based on a voltage or current variation of the signal line.
12. The power line temperature detection protection system according to any one of claims 8 to 11, wherein the temperature-sensitive dome switch is provided to be turned off based on expansion deformation, corresponding to the temperature-sensitive dome switch being turned into an off state in an on state based on an increase in temperature.
13. The power line temperature detection protection system according to claim 12, wherein an end of the temperature sensing dome switch opposite to the end from which the signal line is led is connected to the hot wire, and a decrease in voltage of the signal line corresponds to a transition of the temperature sensing dome switch from an on state to an off state, wherein the signal detection control unit provides the warning response signal based on the decrease in voltage of the signal line to provide the warning response signal in accordance with an increase in temperature of the power plug.
14. The power line temperature detection protection system according to claim 12, wherein an end of the temperature sensing dome switch opposite to the end from which the signal line is led is connected to the neutral line, and a decrease in voltage of the signal line corresponds to a transition of the temperature sensing dome switch from an on state to an off state, wherein the signal detection control unit provides the warning response signal based on the decrease in voltage of the signal line to provide the warning response signal in accordance with an increase in temperature of the power plug.
15. The power line temperature detection protection system according to any one of claims 8 to 11, wherein the temperature-sensitive dome switch is arranged to be turned on based on expansion deformation, corresponding to the temperature-sensitive dome switch being turned into an on state in an off state based on an increase in temperature.
16. The power line temperature detection protection system according to claim 15, wherein an end of the temperature sensing dome switch opposite to the end from which the signal line is led is connected to the hot wire, and an increase in voltage of the signal line corresponds to a transition of the temperature sensing dome switch from an off state to an on state, wherein the signal detection control unit provides the warning response signal based on the increase in voltage of the signal line to provide the warning response signal in accordance with the increase in temperature of the power plug.
17. The power line temperature detection protection system according to claim 15, wherein an end of the temperature sensing dome switch opposite to the end from which the signal line is led is connected to the neutral line, and an increase in voltage of the signal line corresponds to a transition of the temperature sensing dome switch from an off state to an on state, wherein the signal detection control unit provides the warning response signal based on the increase in voltage of the signal line to provide the warning response signal in accordance with the increase in temperature of the power plug.
18. A temperature detection control device connected to a power plug and a powered device for sensing a temperature change of the power plug, comprising:
the temperature sensing spring switch is arranged on the power plug, and the first end of the temperature sensing spring switch is connected with a live wire or a zero wire of a power wire so as to be disconnected or connected in coordination with the temperature change of the power plug;
the signal detection control unit is arranged on the electric equipment; and
the signal wire is connected between the second end of the temperature sensing shrapnel switch and the signal detection control unit, wherein the voltage or current change of the signal wire corresponds to the switching of the off and on states of the temperature sensing shrapnel switch and can feed back the temperature change of the power plug, and the signal detection control unit provides an alarm response signal based on the voltage or current change of the signal wire.
19. The temperature detection control device according to claim 18, wherein the signal detection control unit provides the warning response signal based on a decrease in the voltage of the signal line, when the temperature of the power plug increases to a preset dangerous value, with respect to an expansion of a dome of the temperature sensing dome switch being turned off.
20. The temperature detection control device according to claim 18, wherein the signal detection control unit provides the warning response signal based on an increase in voltage of the signal line, when the temperature of the power plug returns to a normal operating temperature, with respect to cold-shrink closing of a dome of the temperature-sensitive dome switch.
21. The temperature detection control device according to claim 18, wherein the alarm response signal is a control command for controlling the temperature detection control device to generate a corresponding alarm action in response to temperature change information of the power plug, wherein the alarm action is at least one of an audible alarm, a light alarm, and a transmission of alarm information to a designated electronic device.
22. A temperature detection control device connected to a power plug and an electric device, wherein the electric device is electrically connected to the power plug via a neutral wire and a live wire of a power line led out from the power plug to be supplied with power in a state that the power plug is connected to an external power source, comprising:
the temperature sensing spring switch is arranged in the power plug in a state that one end of the temperature sensing spring switch is connected with the live wire or the zero wire, so as to sense the temperature change of the power plug and transmit the temperature change information of the power plug to the electric equipment;
The signal wire is led out from the other end of the temperature sensing spring switch and extends to the electric equipment from the power wire; and
the signal detection control unit is arranged on the electric equipment and is connected with the temperature sensing shrapnel switch through the signal wire so as to form a loop between the signal wire and the live wire or the zero wire, the voltage and current change of the signal wire is related to the change of the on-off state of the temperature sensing shrapnel switch, the temperature change information of the power plug can be fed back based on the electrical characteristic that the on-off state of the temperature sensing shrapnel switch changes along with the temperature change, and the signal detection control unit is arranged to provide an alarm response signal based on the voltage or the current change of the signal wire so as to provide the alarm response signal in response to the temperature change information of the power plug.
23. The temperature detection control device according to claim 22, wherein the alarm response signal is a control command for controlling the temperature detection control device to generate a corresponding alarm action in response to a voltage or current change of the signal line, wherein the alarm action is at least one of an audible alarm, a light alarm, and a transmission of alarm information to a specific electronic device.
24. The temperature detection control device according to claim 23, wherein the temperature-sensitive dome switch is configured to be turned off based on expansion deformation, and the decrease in voltage of the signal line corresponds to the temperature-sensitive dome switch being turned from an on state to an off state in response to the temperature-sensitive dome switch being turned on based on an increase in temperature, wherein the signal detection control unit provides the warning response signal based on the decrease in voltage of the signal line to provide the warning response signal in accordance with the increase in temperature of the power plug.
25. The temperature detection control device according to claim 23, wherein the temperature-sensitive dome switch is configured to be turned on based on expansion deformation, and the rise in voltage of the signal line corresponds to the temperature-sensitive dome switch being turned on from an off state in response to the temperature-sensitive dome switch being turned on based on a rise in temperature, wherein the signal detection control unit provides the warning response signal based on the rise in voltage of the signal line to provide the warning response signal in accordance with the rise in temperature of the power plug.
26. The power line temperature detection and protection method comprises the following steps:
(A) A temperature sensing spring switch arranged on a power plug senses the temperature of the power plug, wherein the temperature sensing spring switch has the electrical characteristic that the on-off state of the temperature sensing spring switch changes along with the temperature change, and can feed back the temperature change of the power plug through the voltage or current change of a signal wire connected with the temperature sensing spring switch;
(B) A signal detection control unit arranged on electric equipment detects temperature change information of the power plug based on voltage or current change of the signal wire; and
(C) The signal detection control unit outputs an alarm response signal based on the temperature change information of the power plug.
27. The method of claim 26, wherein in the step (C), the alarm response signal is a control command for controlling the equipment to generate a corresponding alarm action in response to a voltage or current change of the signal line, wherein the alarm action is at least one of an audible alarm, a light alarm, and a transmission of alarm information to a specific electronic device.
28. The power line temperature detection and protection method comprises the following steps:
(a) A power line and a signal line are led out of a power plug, wherein the power line is provided with a live wire and a zero line, a temperature sensing spring switch is arranged in the power plug, the signal line is led out from one end of the temperature sensing spring switch, and the other end of the temperature sensing spring switch is connected with the live wire or the zero line;
(b) A signal detection control unit detects temperature change information of the power plug based on voltage or current change of the signal wire, wherein the signal detection control unit is arranged on electric equipment which is connected with the temperature sensing shrapnel switch through the signal wire, wherein the electric equipment is connected with the power plug through the power wire in a power supply way so as to form a loop between the signal wire and the live wire or the zero wire, and the voltage and current change of the signal wire is related to the change of the on-off state of the temperature sensing shrapnel switch, so that the temperature change information of the power plug can be fed back based on the electrical characteristic that the on-off state of the temperature sensing shrapnel switch changes along with the temperature change; and
(c) The signal detection control unit provides an alarm response signal based on the voltage or current change of the signal line so as to respond to the temperature change information of the power plug and provide the alarm response signal.
29. The method of claim 28, wherein in the step (c), the alarm response signal is a control command for controlling the equipment to generate a corresponding alarm action in response to a voltage or current change of the signal line, wherein the alarm action is at least one of an audible alarm, a light alarm and a transmission of alarm information to a specific electronic device.
30. The power line temperature detection protection method according to claim 29, wherein the temperature sensing dome switch is configured to be turned off based on expansion deformation, and the voltage of the signal line is reduced corresponding to the temperature sensing dome switch being turned from an on state to an off state in response to the temperature sensing dome switch being turned on based on an increase in temperature, and the signal detection control unit provides the warning response signal corresponding to the reduction in the voltage of the signal line in the step (c).
31. The power line temperature detection protection method according to claim 29, wherein the temperature-sensing dome switch is set to be turned on based on expansion deformation, and the increase in voltage of the signal line corresponds to the temperature-sensing dome switch being turned on from an off state in response to the temperature-sensing dome switch being turned on based on an increase in temperature, and the signal detection control unit provides the warning response signal based on the increase in voltage of the signal line in the step (c).
CN202111653221.5A 2021-12-30 2021-12-30 Power line temperature detection protection system and method and temperature detection control device Pending CN116417829A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202111653221.5A CN116417829A (en) 2021-12-30 2021-12-30 Power line temperature detection protection system and method and temperature detection control device

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111653221.5A CN116417829A (en) 2021-12-30 2021-12-30 Power line temperature detection protection system and method and temperature detection control device

Publications (1)

Publication Number Publication Date
CN116417829A true CN116417829A (en) 2023-07-11

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111653221.5A Pending CN116417829A (en) 2021-12-30 2021-12-30 Power line temperature detection protection system and method and temperature detection control device

Country Status (1)

Country Link
CN (1) CN116417829A (en)

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