CN218335309U - Detection protection equipment without special sensor and detection control device - Google Patents
Detection protection equipment without special sensor and detection control device Download PDFInfo
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- CN218335309U CN218335309U CN202222200989.3U CN202222200989U CN218335309U CN 218335309 U CN218335309 U CN 218335309U CN 202222200989 U CN202222200989 U CN 202222200989U CN 218335309 U CN218335309 U CN 218335309U
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Abstract
The utility model provides a detection protection equipment and detection controlling means of no special sensor, the detection protection equipment of no special sensor includes a power plug, a power cord, an consumer and a detection controlling means of no special sensor, the consumer includes a load switch and a load, the load receives load switch's on-off control ground the power cord by the power supply connect in power plug, no special sensor's detection controlling means with the power cord links to each other, and be connected in load switch and control load switch's break-make, wherein no special sensor's detection controlling means is in before and after load switch switches on detect respectively the voltage of power cord to corresponding an initial voltage value and a voltage value that switches on, and work as initial voltage value with when the difference or the ratio of voltage value reach a settlement threshold value, control load switch disconnection.
Description
Technical Field
The utility model relates to a power cord protection device especially relates to a do not have special sensor's detection protective apparatus and detection controlling means.
Background
Scientific progress and technology development, various electric appliances or electronic products gradually enter the lives of people and gradually become indispensable. The current electric appliances or electronic products are connected with a power supply through a power line to obtain working electric energy. That is, the power cord is a wire connecting a power source and an electrical appliance or an electronic product. However, power cords in the early days did not have settings to ensure the safety of the user and the appliance. Nowadays, power cords used in high power electrical appliances must be provided with an overheat protection function to ensure the safety of users and electrical appliances. Furthermore, when the temperature of the power cord is too high, the power cord is automatically disconnected to protect the user and the electrical appliance, and when the temperature returns to normal, the power cord is automatically turned on to facilitate the user to continue using the power cord, but the power cord in the early stage cannot meet the requirement.
The problem of do not have the device that sets up overheat protection to early power cord, chinese utility model patent that publication number is CN211719903U discloses a built-in plug structure that has built-in hot protector has been solved, its technical scheme who exposes is a hot protector, it can be automatic disconnection when the circuit temperature is too high, and can automatic switch-on lower at the temperature, this plug structure can play fine guard action, can used repeatedly again, this can avoid user's use cost increase, and this plug structure's overall structure design still very reliable, the power cord overheat protection's that prior art generally adopted at present solution. However, it is known that the additional provision of a thermal protector device dedicated to overheat protection in the power supply line inevitably increases the complexity of the interior of the plug, on the one hand placing higher demands on design and manufacture, and on the other hand the complex circuitry and structure inevitably increases the probability of failure. Meanwhile, an additional thermal protector is arranged on a power line, the transmission loss of current is inevitable, although the loss caused by the thermal protector is small compared with the power consumption of electrical appliances or electronic products and is often ignored in the existing design, as mentioned above, with the development of the times, people have more and more electrical appliances or electronic devices, in most cases, even if the electrical appliances or electronic devices are not in a working state, the power line of the electrical appliances or electronic devices is also connected to a power supply, so that the power line always has electric energy loss, and under the state that the number of the electrical appliances or electronic devices is large, the electric energy loss caused in the past is not negligible.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a detection protective device and detection controlling means of no special sensor, it can realize the detection to the power cord under the state that does not use special sensor to according to the power supply state of corresponding load of a corresponding testing result control electric equipment, thereby can realize power supply protection under the state that does not use special sensor, in order to avoid setting up extra sensor and the structure that causes is complicated and the consumption problem.
An object of the utility model is to provide a detection protective apparatus and detection controlling means of no special sensor, it breaks through at present based on thinking and the mode that sets up the thermosensor in order to satisfy the power cord and detect the demand, realizes the detection to the power cord under the state that does not use special sensor, is favorable to simplifying structural design and reduces the consumption.
An object of the utility model is to provide a detection protective apparatus and detection controlling means of no special sensor, wherein according to a power cord voltage variation around a load switch switches on, control load switch switches on or breaks off to switch on or break off corresponding load with the power supply of power cord is connected, with be different from at present based on setting up thermal sensor and based on the thought and the method of the power supply state of power plug's corresponding load of temperature change control, thereby can realize under the state that does not use the sensor that the power supply is protected in order to ensure consumer's power consumption safety.
An object of the utility model is to provide a detection protective equipment and detection controlling means of no special sensor, wherein rely on the power cord is in voltage before load power switch switches on is an initial voltage value, and rely on the power cord is in voltage after load power switch switches on is a conduction voltage value, then the conduction voltage value is the actual operating voltage of corresponding load, wherein through the contrast initial voltage value with the feedback of conduction voltage value the power cord is in voltage variation around load power switch switches on to with the form of numerical value feedback be different from at present based on setting up the heat sensor and based on temperature variation feedback voltage or current variation's thought and mode, realize the power supply protection under the state that does not use the sensor with the guarantee consumer's power safety.
An object of the utility model is to provide a detection protective equipment and detection controlling means of no special sensor, wherein through the contrast initial voltage value with the conduction voltage value, acquire initial voltage value with the difference or the ratio of conduction voltage value, and rely on initial voltage value with the difference or the ratio of conduction voltage value reach a settlement threshold value, judge to exist and so as to have power consumption insecure factors such as power cord trouble, corresponding supply socket trouble, then the disconnection load switch to cut off the power supply of corresponding load, thereby the guarantee consumer's power consumption safety.
An object of the utility model is to provide a detection protective apparatus and detection controlling means of no special sensor, wherein rely on initial voltage value with the difference or the ratio of the on-voltage value reach or tend to when setting for the threshold value, send a warning signal, for example alarm, buzzing or information etc. wherein warning signal can also be through wired or wireless transmission's mode, provide user-specified electron device to make the user in time receive corresponding warning information.
An object of the utility model is to provide a detection protective apparatus and detection controlling means of no special sensor, wherein work as initial voltage value with the difference or the ratio of conduction voltage value do not reach when setting for the threshold value, repeatedly acquire conduction voltage value and repeated contrast initial voltage value with the conduction voltage value, with real-time detection the voltage variation of power cord ensures the power consumption safety of consumer in the use.
According to the utility model discloses an aspect, the utility model provides a detection protective apparatus of no special sensor, wherein the detection protective apparatus of no special sensor includes:
a power plug;
a power cord, wherein said power cord comprises a live wire and a neutral wire leading from said power plug;
an electric device, wherein the electric device comprises a load power switch and a load, wherein the power supply of the load is controlled by the on-off of the load power switch and is connected to the power plug through the live wire and the neutral wire; and
the detection control device without the special sensor comprises a voltage detection circuit and a control circuit connected with the voltage detection circuit, wherein the voltage detection circuit is respectively connected with the live wire and the zero wire, the control circuit is connected with the load power switch and controls the on-off of the load power switch, the voltage detection circuit respectively detects the voltage between the live wire and the zero wire of the power line before and after the load power switch is switched on so as to correspondingly obtain an initial voltage value and a conducting voltage value, the conducting voltage value is the actual working voltage of the load, and the control circuit is arranged to control the load power switch to be switched off when the difference value or the ratio of the initial voltage value and the conducting voltage value reaches a set threshold value.
In an embodiment of the present invention, the voltage detection circuit detects the initial voltage value and the difference or ratio of the on-state voltage value is not reached to the set threshold value, and the voltage of the power line is repeatedly detected to update the on-state voltage value.
In an embodiment of the present invention, the control circuit is configured to send a warning signal when the difference or ratio between the initial voltage value and the on-state voltage value reaches or tends to the set threshold value.
In an embodiment of the present invention, the warning signal is at least one of a sound warning, a light warning and a transmission warning message to the designated electronic device.
In an embodiment of the present invention, the power plug is a three-core power plug, and the power cord further has a ground wire led out from the power plug, wherein the electrical device is connected to the ground wire, so that the power plug is protected from being grounded when being connected to the mains supply.
In an embodiment of the present invention, the detection control device is disposed in the electric device.
According to another aspect of the utility model, the utility model provides a detection controlling means of a no special sensor, it is connected in a power cord, wherein the power cord includes a live wire and a zero line, the detection controlling means that does not have special sensor is used for detecting the power cord the live wire with voltage variation between the zero line, wherein the detection controlling means that does not have special sensor includes:
a voltage detection circuit, wherein the live line and the zero line of the power line are adapted to be connected to a mains power and are controllably connected to a load via a load power switch, so as to supply power to the load in a state where the load power switch is turned on, wherein the voltage detection circuit is connected to the live line and the zero line of the power line, and detects voltages between the live line and the zero line of the power line before and after the load power switch is turned on, respectively, so as to obtain an initial voltage value and a turn-on voltage value, where the turn-on voltage value is an actual operating voltage of the load; and
and the control circuit is connected with the voltage detection circuit, is connected with the load power switch and is arranged to control the load power switch to be switched off when the difference value or the ratio of the initial voltage value and the conducting voltage value reaches a set threshold value.
In an embodiment of the present invention, the voltage detection circuit repeatedly detects the voltage of the power line to update the on-state voltage value when the initial voltage value and the difference or ratio of the on-state voltage value do not reach the set threshold.
In an embodiment of the present invention, the control circuit is configured to send a warning signal when the difference or ratio between the initial voltage value and the on-state voltage value reaches or tends to the set threshold value.
In an embodiment of the present invention, the warning signal is at least one of a sound warning, a light warning and a transmission warning message to the designated electronic device.
Further objects and advantages of the invention will be fully apparent from the ensuing description and drawings.
Drawings
Fig. 1 is a schematic block diagram of a detection and protection device without a dedicated sensor according to an embodiment of the present invention.
Fig. 2 is a schematic flow chart of the detection protection method without a dedicated sensor according to the above embodiment of the present invention.
Detailed Description
The following description is provided to disclose the invention so as to enable any person skilled in the art to practice the invention. The preferred embodiments in the following description are given by way of example only, and other obvious variations will occur to those skilled in the art. The basic principles of the invention, as defined in the following description, may be applied to other embodiments, modifications, improvements, equivalents, and other technical solutions without departing from the spirit and scope of the invention.
It will be understood by those skilled in the art that in the present disclosure, the terms "vertical," "horizontal," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like are used in a generic and descriptive sense only and not for purposes of limitation, as the terms are used in the specification and are not intended to indicate or imply that the referenced device or element must have the specified orientation, configuration, or operation in the specified orientation.
It is understood that the terms "a" and "an" should be interpreted as meaning that a number of one element or element is one in one embodiment, while a number of other elements is one in another embodiment, and the terms "a" and "an" should not be interpreted as limiting the number.
In the description of the present invention, it should be noted that, unless otherwise explicitly specified or limited, the terms "mounted," "connected" and "connected" are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally connected; may be mechanically connected, may be electrically connected or may be in communication with each other; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood according to specific situations by those skilled in the art.
The utility model provides a detection protective equipment and detection controlling means of no special sensor, its voltage variation with the power cord under the state that does not use special sensor cuts off the power supply or the action that switches on to can realize the power supply protection under the state that does not use special sensor, so in order to avoid setting up extra sensor and the structure complicacy and the consumption problem that cause.
Referring to fig. 1 and 2 of the drawings of the specification of the present invention, the device and method for detecting and protecting a power line without a dedicated sensor according to an embodiment of the present invention are illustrated, which break through the current thinking and mode of setting a thermal sensor to satisfy the power line detection requirement, and realize the detection of the power line in a state without using a dedicated sensor, thereby facilitating the simplification of the structural design and the reduction of the power consumption.
Specifically, the detection and protection device 100 without a dedicated sensor includes a power plug 10, an electric device 30 and a detection control apparatus 40 without a dedicated sensor, wherein the electric device 30 is connected to the power plug 10 via a power line 20 to be supplied with power in a state that the power plug 10 is connected to the commercial power, and wherein the detection control apparatus 40 without a dedicated sensor is connected to the power line 20 to detect a voltage change of the power line 20 and to disconnect the electric connection of the electric device 30 in a state that an abnormality is determined, so as to ensure the power safety of the electric device 30.
In detail, the power line 20 includes a live line L and a neutral line N led out from the power plug 10 and controllably connected to the electric device 30, in other words, one end of the live line L and the neutral line N is connected to the power plug 10, and the other end of the live line L and the neutral line N is controllably connected to the electric device 30, wherein the electric device 30 includes an electric device body 31, a load power switch 32 and a load 33, wherein the load power switch 32 and the load 33 are disposed on the electric device body 31, and the load 33 is connected to the other end of the live line L and the neutral line N under on-off control of the load power switch 32, so as to be electrically supplied to the power plug 10 through the live line L and the neutral line N in a state where the load power switch 32 is turned on, wherein the detection control device 40 without a dedicated sensor judges whether there is an abnormal voltage condition between the live line L and the neutral line N of the power line 20 before and after the load power switch 32 is turned on, and judges whether the load power switch 33 is turned on or off safely by comparing the power control of the load power switch 32.
It is understood that, the power cord 20 may further include a ground wire G, wherein the electric device 30 is connected to the ground wire G for ground protection in a state that the power plug 10 is connected to the commercial power, wherein the ground wire G may be set or not set, in other words, whether the ground wire G is set or not does not constitute a limitation of the present invention.
Further, the detection control device 40 without dedicated sensor comprises a voltage detection circuit 41 and a control circuit 42 connected to the voltage detection circuit 41, wherein the voltage detection circuit 41 is connected to the live line L and the zero line N respectively to detect the voltage between the live line L and the zero line N of the power line 20, wherein the control circuit 42 is connected to the load power switch 33 and controls the on/off of the load power switch 33, wherein the load power switch 33 is in an off state by default to ensure the safety of the electric device 30, wherein in a state that the power plug 10 is connected to the commercial power, the voltage detection circuit 41 detects the voltage between the live line L and the zero line N of the power line 20 when the load power switch 33 is in the off state to obtain an initial voltage value U1, wherein the voltage detection circuit 42 controls the load power switch 33 to be turned on after the initial voltage value U1 is obtained, wherein the voltage detection circuit 41 further detects the voltage between the live line L and the zero line N of the power line 20 after the load power switch 33 is turned on, and correspondingly obtains a turn-on voltage value U2, wherein the turn-on voltage value U2 is the actual working voltage of the load 33, wherein a voltage drop value is generated according to the difference or ratio between the initial voltage value U1 and the turn-on voltage value U2, the voltage drop value is the voltage variation fed back between the live line L and the zero line N of the power line 20 before and after the load power switch 32 is turned on, wherein the control circuit 42 is configured to turn off the load voltage switch 32 when the voltage drop value reaches a set threshold value, in this way, in a form based on numerical feedback, unlike the current idea and manner based on setting a thermal sensor and feeding back a voltage or current change based on a temperature change, power supply protection is realized in a state without using a sensor to guarantee the power safety of the electric device 30.
In other words, the voltage drop value is a quantized value representing a difference between the initial voltage value U1 and the on-voltage value U2, and when the voltage drop value is a difference between the initial voltage value U1 and the on-voltage value U2, the voltage drop value is a value of a voltage loss caused by feeding back an operating current of the electric device 30 and a resistance of the power plug 10 contacting a corresponding socket, and a resistance of the power line 20 between the power plug 10 and the detection control device 40 without a dedicated sensor.
Wherein the electric equipment 30 is high-power electric equipment, for example but not limited to electric equipment such as oven, air fryer, electric fan heater, air conditioner, electric water heater, the load 33 is the major devices in the electric equipment 30, such as heating tube, PTC heater, compressor, motor etc., wherein the power consumption safety of load 33 directly concerns holistic power consumption safety, therefore the utility model discloses a disconnect under abnormal condition the mode of the power supply of load 33 realizes the power supply protection to electric equipment 30, ensures electric equipment 30's power consumption safety.
In particular, in a normal state, the initial voltage value U1 and the turn-on voltage value U2 should be stable and tend to be equal, that is, the voltage drop value should tend to 0 when the voltage drop value is a difference value between the initial voltage value U1 and the turn-on voltage value U2, and the voltage drop value should tend to 1 when the voltage drop value is a ratio of the initial voltage value U1 and the turn-on voltage value U2. When the voltage drop value reaches the set threshold value, it is determined that there are unsafe factors of power consumption, such as a failure of the power line 20 and a failure of the power outlet 10, and there are risks of heat generation and burnout, and the control circuit 42 turns off the load power switch 32 to cut off the power supply of the load 33, thereby ensuring the power consumption safety of the power consumption device 30.
Preferably, in this embodiment of the present invention, the detection control device 40 is disposed in the electric device 30 and is embedded in the electric device body 31, so as to facilitate the design of the detection protection device 100 without a dedicated sensor, wherein the detection control device 40 may be specifically implemented as a processor, such as a single chip, a chip, or the like.
Preferably, when the voltage drop value does not reach the set threshold, the voltage detection circuit 41 repeatedly detects the voltage of the power line 20 to update the on-state voltage value U2, and then updates the voltage drop value correspondingly, so as to detect the voltage change of the power line 20 in the operation process of the load 33 in real time, so as to guarantee the power utilization safety of the electric device 30 in the use process in real time.
In particular, the detection and protection device 100 without a dedicated sensor may further provide a warning signal to a user, so that the user can obtain the use condition of the electric device 30 in time while ensuring the electric safety of the electric device 30, so that the user can take corresponding measures in time, such as repair, etc.
Specifically, when the difference or the ratio between the initial voltage value U1 and the on-voltage value U2 reaches the set threshold, that is, when the voltage drop reaches the set threshold, the control circuit 42, in addition to turning off the load power switch 32, also sends out a warning signal, where the warning signal may be a voice or a buzzer, or a light flash, or may be information transmitted to various electronic devices specified by the user, such as a mobile phone, a tablet, and a watch, so that the user can know that the electric equipment 30 has a fault in time. When the electric device 20 itself has a sound generating module and/or a light emitting module and/or a communication module, the warning information can be directly sent by using the corresponding module on the electric device 20, so as to easily and easily implement intelligent control.
It should be noted that, the control circuit 42 may be further configured to send the warning signal before the difference or the ratio between the initial voltage value U1 and the conducting voltage value U2 reaches the set threshold, that is, when the voltage drop value approaches the set threshold, so as to notify the user of paying attention to the working condition of the electric device 30 in time to prevent the user from accidentally ensuring the power utilization safety of the electric device 30.
The utility model discloses still provide a detection protection method of a no special sensor, be applicable to and provide the power consumption protection for an electric equipment 30, wherein electric equipment 30 includes a power cord 20, a load switch 32 and power supply and receives load switch 32's on-off control and controllable connect in a load 33 of power cord 20, wherein power cord 20 includes a live wire L and a zero line N, and it includes the step:
I. detecting an initial voltage value U1, wherein the initial voltage value U1 is a voltage between the live line L and the neutral line N of the power line 20 before the load power switch 32 is turned on;
II. Detecting a conducting voltage value U2, wherein the conducting voltage value U2 is a voltage between the live line L and the neutral line N of the power line 20 after the switch of the load power supply 32 is turned on, and the conducting voltage value U2 is an actual working voltage of the load 33;
III, comparing the initial voltage value U1 with the conducting voltage value U2, and generating a voltage drop value according to the difference value or the ratio of the initial voltage value U1 and the conducting voltage value U2, wherein when the voltage drop value reaches a set threshold value, the load voltage switch 32 is switched off.
Wherein the live line L and the neutral line N of the power line 20 are wires controllably connecting the load 33 of the electrical equipment 30 to a power plug 10, wherein the power supply of the load 33 is controlled by the on-off of the load power switch 32, and the live line L and the neutral line N of the power line 20 are connected to the power plug 10, wherein the load power switch 33 is in an off state by default, so as to ensure the electrical safety of the electrical equipment 30, wherein in a state where the power plug 10 is connected to the utility power, the detection protection method without a dedicated sensor detects the voltage between the live line L and the neutral line N of the power line 20 while the load power switch 33 is still in the off state, and correspondingly obtains the initial voltage value U1, wherein after the initial voltage value U1 is obtained, the load power switch 32 is turned on and further detects the voltage between the live line L and the neutral line N of the power line 20, and correspondingly obtains the on voltage value U2, the on voltage value U2 is the actual working voltage of the load 33, wherein the difference value generated by the initial voltage value U1 and the on voltage value U2 is set based on the feedback voltage value of the current of the load power switch, and the feedback protection method is based on the feedback voltage value of the feedback voltage that the current of the load power switch 32 is set before and the current feedback protection when the load voltage value of the load voltage change is set, and the current of the load voltage reduction protection device 20, and the feedback voltage change is set based on voltage value of the feedback voltage value.
Further, in the step III, when the voltage drop value does not reach the set threshold, the step II is returned to update the voltage drop value, so as to detect the voltage change between the live line L and the neutral line N of the power line 20 during the operation of the load 33 in real time, so as to guarantee the power utilization safety of the electric equipment 30 during the use process in real time.
Further, the step III further includes sending a warning signal when the voltage drop value reaches or approaches the set threshold, in such a way, the power utilization safety of the electric equipment 30 is guaranteed, and the user can timely obtain the use condition of the electric equipment 30, so that the user can timely take corresponding treatment measures. The warning signal may be at least one of a sound warning (such as voice, buzzing, etc.), a light warning (such as light flashing, specific light color, etc.), and transmitting warning information to a designated electronic device (such as a mobile phone, a tablet, etc.).
The utility model provides a still another does not have special sensor's detection protection method, wherein no special sensor's detection protection method includes the step:
A. leading out a power line 20 from a power plug 10, wherein the power line 20 comprises a live line L and a neutral line N;
B. connecting a detection control device 40 without a dedicated sensor to the live wire L and the neutral wire N, wherein the detection control device 40 without a dedicated sensor is disposed on an electrical device 30 and controls on/off of a load power switch 32 of the electrical device 30 to control power supply of a load 33 of the electrical device 30, wherein the power supply of the load 33 is controlled by on/off of the load power switch 32 and is connected to the power plug 10 through the live wire L and the neutral wire N, wherein the detection control device without a dedicated sensor detects a voltage of the power line 20 before and after the load power switch 32 is turned on respectively in a state that the power plug 10 is connected to commercial power, so as to correspondingly obtain an initial voltage value U1 and a conducting voltage value U2, wherein the conducting voltage value U2 is an actual operating voltage of the load 33;
C. in response to the difference or ratio between the initial voltage value U1 and the on-voltage value U2 reaching a set threshold, the sensorless detection control device 40 turns off the load power switch 32.
Wherein the load power switch 33 is in an off state by default, so as to ensure the power safety of the electric equipment 30, wherein in a state that the power plug 10 is connected to the commercial power, the detection control device 40 without dedicated sensor detects the voltage between the live line L and the neutral line N of the power line 20 when the load power switch 33 is still in the off state, that is, the detection control device 40 without dedicated sensor detects the voltage between the live line L and the neutral line N of the power line 20 before the load power switch 32 is turned on, and correspondingly obtains the initial voltage value U1, wherein after the initial voltage value U1 is obtained, the detection control device 40 without dedicated sensor controls the load power switch 32 to be turned on and further detects the voltage between the live line L and the neutral line N of the power line 20, i.e. the voltage between the live line L and the neutral line N of the power line 20 is detected after the load power switch 20 is turned on, correspondingly, if the on-state voltage value U2 is obtained, the on-state voltage value U2 is the actual operating voltage of the load 33, wherein the voltage variation between the live line L and the neutral line N of the power line 20 before and after the load power switch 32 is turned on is fed back by the difference or ratio of the initial voltage value U1 and the turn-on voltage value U2, wherein the control circuit 42 is configured to open the load power switch 32 when the difference or ratio between the initial voltage value U1 and the turn-on voltage value U2 reaches the set threshold, this is distinguished from current ideas and ways of feeding back voltage or current changes based on temperature changes based on the provision of thermal sensors in a form based on numerical feedback, the power supply protection is realized under the condition that the sensor is not used so as to ensure the power utilization safety of the power utilization equipment 30.
Further, when the difference or ratio between the initial voltage value U1 and the on-state voltage value U2 does not reach the set threshold, the detection control device 40 without a dedicated sensor repeatedly detects the voltage of the power line 20 to update the on-state voltage value U2, so as to detect the voltage change of the power line 20 during the operation of the load 33 in real time, so as to guarantee the power safety of the electric device 30 during the use in real time.
Further wherein said step C further comprises the steps of: when the difference value or the ratio of the initial voltage value U1 and the conduction voltage value U2 reaches or approaches the set threshold value, a warning signal is sent out, so that the power utilization safety of the electric equipment 30 is guaranteed, and a user can acquire the service condition of the electric equipment 30 in time, so that the user can take corresponding treatment measures in time. The warning signal may be at least one of a sound warning (such as voice, buzzing, etc.), a light warning (such as light flashing, specific light color, etc.), and transmitting warning information to a designated electronic device (such as a mobile phone, a tablet, etc.).
It will be understood by those skilled in the art that the embodiments of the present invention as described above and shown in the drawings are given by way of example only and are not limiting of the present invention. The objects of the present invention have been fully and effectively accomplished. The functional and structural principles of the present invention have been shown and described in the embodiments without departing from the principles, embodiments of the present invention may have any deformation or modification.
Claims (10)
1. Detection protection equipment without special sensor, characterized in that includes:
a power plug;
the power line comprises a live wire and a zero wire which are led out from the power plug;
an electric device, wherein the electric device comprises a load power switch and a load, wherein the power supply of the load is controlled by the on-off of the load power switch and is connected to the power plug through the live wire and the neutral wire; and
the detection control device without the special sensor comprises a voltage detection circuit and a control circuit connected with the voltage detection circuit, wherein the voltage detection circuit is respectively connected with the live wire and the zero wire, the control circuit is connected with the load power switch and controls the on-off of the load power switch, the voltage detection circuit respectively detects the voltage between the live wire and the zero wire of the power line before and after the load power switch is switched on so as to correspondingly obtain an initial voltage value and a conducting voltage value when the power plug is connected with commercial power, the conducting voltage value is the actual working voltage of the load, and the control circuit is arranged to control the load power switch to be switched off when the difference value or the ratio of the initial voltage value and the conducting voltage value reaches a set threshold value.
2. The sensorless detection protection apparatus according to claim 1, wherein the voltage detection circuit repeatedly detects the voltage of the power supply line to update the on-voltage value when a difference or a ratio of the initial voltage value and the on-voltage value does not reach the set threshold value.
3. The sensorless detection protection apparatus of claim 1 wherein the control circuit is configured to issue an alert signal when a difference or ratio of the initial voltage value and the turn-on voltage value reaches or approaches the set threshold.
4. The sensorless detection protection apparatus of claim 3 wherein the alert signal is at least one of an audible alert, a light alert, and a transmission of alert information to a designated electronic device.
5. The sensorless detection protection apparatus of claim 1, wherein the power plug is configured as a three-core power plug, and further has a ground wire led out from the power plug corresponding to the power cord, wherein the electrical device is connected to the ground wire to be protected from ground in a state where the power plug is connected to a commercial power.
6. The sensorless test protection apparatus of any one of claims 1 to 5, wherein the test control device is provided to the powered device.
7. A detection control device without a dedicated sensor, connected to a power line, wherein the power line includes a live line and a neutral line, the detection control device without a dedicated sensor being configured to detect a voltage change between the live line and the neutral line of the power line, the detection control device comprising:
a voltage detection circuit, wherein the live wire and the zero wire of the power line are adapted to be connected to a commercial power and are controllably connected to a load through a load power switch, so as to supply power to the load in a state where the load power switch is turned on, wherein the voltage detection circuit is connected to the live wire and the zero wire of the power line, and detects a voltage between the live wire and the zero wire of the power line before and after the load power switch is turned on, respectively, so as to obtain an initial voltage value and a turn-on voltage value, where the turn-on voltage value is an actual operating voltage of the load; and
and the control circuit is connected with the voltage detection circuit, is connected with the load power switch and is arranged to control the load power switch to be switched off when the difference value or the ratio of the initial voltage value and the conducting voltage value reaches a set threshold value.
8. The sensorless detection control apparatus according to claim 7, wherein the voltage detection circuit repeatedly detects the voltage of the power supply line to update the on-voltage value when a difference or a ratio of the initial voltage value and the on-voltage value does not reach the set threshold value.
9. The sensorless test control apparatus of claim 7 wherein the control circuit is configured to issue a warning signal when the difference or ratio between the initial voltage value and the turn-on voltage value reaches or approaches the predetermined threshold.
10. The sensorless test control apparatus of claim 9, wherein the alert signal is at least one of an audible alert, a light alert, and a transmission of an alert message to a designated electronic device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222200989.3U CN218335309U (en) | 2022-08-19 | 2022-08-19 | Detection protection equipment without special sensor and detection control device |
Applications Claiming Priority (1)
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| CN202222200989.3U CN218335309U (en) | 2022-08-19 | 2022-08-19 | Detection protection equipment without special sensor and detection control device |
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