CN217587942U - Child safety power regulating circuit and child safety socket - Google Patents

Abstract

The utility model discloses a child safety power regulating circuit and child safety extension socket, which relates to the technical field of sockets, and comprises a regulating circuit, a power regulating circuit and a power regulating circuit, wherein the regulating circuit is used for outputting an unlocking signal and a power regulating signal when triggered by a user; the main control circuit comprises a self-locking working mode and a power adjusting mode, and is used for working in the power adjusting mode when receiving the unlocking signal and outputting a corresponding power control signal according to the power adjusting signal in the power adjusting mode; the main control circuit works in a self-locking working mode when not receiving the unlocking signal, and outputs a fixed power control signal in the self-locking working mode; and the power control circuit is used for adjusting the power output to the output end according to the power control signal. The utility model discloses be favorable to improving the power consumption safety.

Description

Child safety power regulating circuit and child safety power strip

Technical Field

The utility model relates to a socket technical field, in particular to row is inserted to children's safety power conditioning circuit and children's safety.

Background

With the rapid development of science and technology, the quality of life of people is gradually improved, various electric appliances are popularized in life, electric appliances specially designed for children are gradually increased, and the power utilization safety of children is less in extension socket design.

SUMMERY OF THE UTILITY MODEL

The utility model aims at providing a children's safety power conditioning circuit, aim at the utility model discloses be favorable to improving the power consumption safety.

In order to achieve the above object, the utility model provides a child safety power regulating circuit is applied to child safety and inserts row, a serial communication port, child safety power regulating circuit includes:

the adjusting circuit is used for outputting an unlocking signal and a power adjusting signal when being triggered by a user;

the master control circuit comprises a self-locking working mode and a power regulation mode, a signal receiving end of the master control circuit is connected with the regulation circuit, and the master control circuit is used for working in the power regulation mode when receiving the unlocking signal and outputting a corresponding power control signal according to the power regulation signal in the power regulation mode; when the master control circuit does not receive the unlocking signal, the master control circuit works in a self-locking working mode, and under the self-locking working mode, the master control circuit outputs a fixed power control signal;

the power control circuit, power control circuit's input and commercial power are connected, power control circuit's output is connected with the load, power control circuit's controlled end with master control circuit connects, power control circuit is used for according to power control signal, adjusts the power of exporting to the output.

Optionally, the child-resistant power conditioning circuit further comprises:

the first timer and the second timer are respectively connected with the main control circuit;

the main control circuit is further configured to control the first timer to start timing when receiving an unlocking signal, so as to operate in a power adjustment mode when receiving a first timing end signal output by the first timer;

and when receiving the power adjusting signal, the second timer starts timing when not receiving the unlocking signal and the power adjusting signal, so as to work in a self-locking working mode when receiving a second timing ending signal output by the second timer.

Optionally, the child-resistant power conditioning circuit comprises:

the input end of the indicator light circuit is connected with the main control circuit;

the main control circuit is further used for controlling the indicator light circuit to work when the first timing end signal is received;

and when the second timing end signal is received, controlling the indicator light circuit to work.

Optionally, the regulating circuit comprises:

the power increasing key is connected with a signal receiving end of the main control circuit and is used for outputting a power increasing signal to the main control circuit when being operated by a user;

the power reduction key is connected with the other signal receiving end of the main control circuit and is used for outputting a power reduction signal to the main control circuit when being operated by a user;

the master control circuit is further configured to operate in a power adjustment mode when receiving the power increase signal and the power decrease signal at the same time.

Optionally, the power control circuit comprises:

the detection end of the zero-crossing detection circuit is connected with the mains supply, the output end of the zero-crossing detection circuit is connected with the main control circuit, and the zero-crossing detection circuit is used for detecting the zero crossing point of the mains supply and outputting a zero-crossing point detection signal;

the controlled end of the conduction circuit is connected with the main control circuit, the input end of the conduction circuit is connected with the mains supply, and the output end of the conduction circuit is connected with the load;

and the main control circuit outputs a corresponding power control signal according to the zero crossing point detection signal so as to control the conduction circuit to conduct at a corresponding frequency and output the power output by the commercial power to a load.

Optionally, the child-resistant power conditioning circuit further comprises:

the detection end of the current detection circuit is connected with the power end of a load, the feedback end of the current detection circuit is connected with the receiving end of the main control circuit, and the current detection circuit is used for detecting the load current of the load, converting the load current into a load current signal and outputting the load current signal to the main control circuit;

the main control circuit is further used for controlling the power control circuit to output/stop outputting power to an output end according to the load current signal.

Optionally, the child-resistant power conditioning circuit comprises:

the input end of the voltage stabilizing circuit is connected with a mains supply, the output end of the voltage stabilizing circuit is connected with the power supply end of the control circuit, and the voltage stabilizing circuit is used for converting an accessed power supply into a direct current power supply and then outputting the direct current power supply to the main control circuit so as to supply power to the main control circuit.

The utility model discloses still provide a row is inserted to children's safety, include as above children's safety power conditioning circuit.

The utility model discloses a set up regulating circuit, master control circuit and power control circuit and realized that the user is adjustable inserts the row and exports the power to the load, prevent that children from missing to touch and insert the row and cause the accident, still pass through master control circuit's self-locking mode and power control mode have realized preventing children and adult from missing to touch regulating circuit and change insert the row and export the power to the load, the utility model discloses be favorable to improving power consumption safety.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings needed to be used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the structures shown in the drawings without creative efforts.

Fig. 1 is a schematic structural diagram of an embodiment of a child safety power adjusting circuit according to the present invention;

fig. 2 is a schematic structural diagram of another embodiment of the child-resistant power regulating circuit of the present invention;

fig. 3 is a schematic structural diagram of another embodiment of the child-resistant power conditioning circuit of the present invention;

fig. 4 is a schematic structural diagram of a further embodiment of the child safety power regulating circuit of the present invention;

fig. 5 is a schematic structural diagram of an embodiment of a main control circuit in the child safety power adjusting circuit of the present invention;

fig. 6 is a schematic structural diagram of an embodiment of a conduction circuit in the child safety power adjustment circuit of the present invention;

fig. 7 is a schematic structural diagram of an embodiment of a zero-crossing detection circuit in the child safety power adjustment circuit of the present invention;

fig. 8 is a schematic structural diagram of an embodiment of a current detection circuit in the child safety power adjustment circuit according to the present invention;

fig. 9 is a schematic structural diagram of an embodiment of a voltage stabilizing circuit in the child safety power regulating circuit according to the present invention.

The reference numbers illustrate:

reference numerals	Name(s)	Reference numerals	Name (R)
				10	Regulating circuit	20	Master control circuit
30	Power control circuit	40	First timer
				50	Second timer	60	Indicating lamp circuit
1010	Power increasing key	1020	Power reduction key
				3010	Zero-crossing detection circuit	3020	Conduction circuit
70	Current detection circuit	80	Voltage stabilizing circuit
				D1	Luminous first diode	R1	A first resistor
Q1	Bidirectional thyristor	R2	A second resistor
				D2	Second diode	R3	Third resistance
R4	Fourth resistor	R5	Fifth resistor
				D6	Sixth resistor	Q2	Triode
U1	Circuit mutual inductor	D3	Third diode
				C1	First capacitor with polarity	C2	Second capacitor
R7	Seventh resistor	C3	Third step downCapacitor with a capacitor element
				R8	Eighth resistor	R9	Ninth resistor
D4	Fourth diode	D5	Fifth diode
				DZ	Zener diode	C4	Polar fourth capacitor
C5	Fifth capacitor	C6	Sixth capacitor
				C7	Seventh capacitor	U2	Low dropout linear regulator
C8	Eighth capacitor	C9	Ninth capacitor

The realization, the functional characteristics and the advantages of the utility model are further explained by combining the embodiment and referring to the attached drawings.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by a person skilled in the art without making creative efforts belong to the protection scope of the present invention.

In addition, descriptions in the present application as to "first", "second", and the like are for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicit to the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include at least one such feature. In addition, the technical solutions in the embodiments may be combined with each other, but it must be based on the realization of those skilled in the art, and when the technical solutions are contradictory or cannot be realized, the combination of the technical solutions should not be considered to exist, and is not within the protection scope of the present invention.

The utility model provides a child safety power regulating circuit is applied to child safety and inserts the row.

The child safety socket can be a fixed socket, a mobile socket with an extension line and the like, and the socket is provided with two-phase or three-phase jacks to provide power for various power electrical appliances such as fans, air conditioners, computers, hot water kettles and the like. The electric appliances commonly used by children comprise a desk lamp, a charger, an electric toy and the like, and the power of the electric appliances for children is usually less than 20W, so that the power of the existing safety socket for children is usually reduced to supply power to the electric appliances for children, and the electric appliances with higher power cannot be supplied with power. Moreover, the use of children's electric appliances is not frequent, which limits the use scenes of the children's safety socket.

In order to solve the above problem, in an embodiment of the present invention, a power regulating circuit for children safety is provided.

Referring to fig. 1, fig. 1 is a schematic structural diagram of an embodiment of the child safety power adjusting circuit of the present invention, in this embodiment, the child safety power adjusting circuit includes:

the adjusting circuit 10 is used for outputting an unlocking signal and a power adjusting signal when the adjusting circuit 10 is triggered by a user;

the main control circuit 20, the main control circuit 20 includes a self-locking working mode and a power adjusting mode, a signal receiving end of the main control circuit 20 is connected with the adjusting circuit 10, the main control circuit 20 is configured to work in the power adjusting mode when receiving the unlocking signal, and output a corresponding power control signal according to the power adjusting signal in the power adjusting mode; when the main control circuit 20 does not receive the unlocking signal, the main control circuit 20 works in a self-locking working mode, and in the self-locking working mode, the main control circuit 20 outputs a fixed power control signal;

the input end of the power control circuit 30 is connected with the mains supply, the output end of the power control circuit 30 is connected with the load, the controlled end of the power control circuit 30 is connected with the main control circuit 20, and the power control circuit 30 is used for adjusting the power output to the output end according to the power control signal.

In this embodiment, the adjusting circuit 10 may be a device such as an up touch key and a down touch key that can be operated by a user to input a signal, and the user may simultaneously touch the up touch key and the down touch key to control the adjusting circuit 10 to output an unlocking signal to the main control circuit 20. In this embodiment, the user may also touch the up-adjustment touch key to output the power up-adjustment signal to the main control circuit 20, or touch the down-adjustment touch key to output the power down-adjustment signal to the main control circuit 20.

In this embodiment, the main control circuit 20 may be implemented by a microcontroller such as a single chip, a DSP, an FPGA, or the like, when the main control circuit 20 receives the unlock signal, the main control circuit 20 operates in the power adjustment mode, and in the power adjustment mode, when the main control circuit 20 receives the power up signal, the main control circuit 20 outputs a power control signal for increasing the power to the power control circuit 30 to control the power control circuit 30 to increase the power value output by the utility power to the output terminal, or when receiving the power down signal, the main control circuit 20 outputs a power control signal for decreasing the power to the power control circuit 30 to control the power control circuit 30 to decrease the power value output by the utility power to the output terminal. When the main control circuit 20 does not receive the unlocking signal, the main control circuit operates in the self-locking mode, the main control circuit 20 does not control the power control circuit 30 to adjust the power value output to the output end according to the power adjusting signal of the up-adjustment touch key and the down-adjustment touch key, and at this time, the power control circuit 30 controls the commercial power to provide fixed power to the load.

In this embodiment, the power control circuit 30 may control the commercial power to be conducted for a certain time in the period to adjust the power output by the commercial power to the output end of the power control circuit 30, and when the power control circuit 30 receives the power control signal, the power control circuit 30 conducts for a corresponding time in the period of the commercial power according to the power control signal to adjust the power output by the commercial power to the output end of the power control circuit 30, so as to control the power output by the output end of the power control circuit 30 to the load.

The utility model discloses a set up regulating circuit 10, master control circuit 20, power control circuit 30, it can be in order to adjust the power of exporting to the load by user operation to have realized that children's safety inserts the row, when children use, user's accessible operation regulating circuit 10 switches master control circuit 20 and works in the power regulation mode, adjust signal to master control circuit 20 through regulating circuit 10 output power, adjust the power of exporting to the load to the power that can protect children to use safety with control power control circuit 30, prevent that children from using the in-process of electrical apparatus to take place dangerously, still realized through the built-in mode locking formula of master control circuit 20 that prevents children from inserting the row in order to adjust children's safety and insert the output of arranging because of the mistake touches children's safety, thereby lead to the incident or can't use electrical apparatus etc., the utility model discloses be favorable to improving power consumption safety. When the electric appliance with higher power needs to be supplied with power, a user can also operate the adjusting circuit 10 to switch the main control circuit 20 to work in a power adjusting mode, so as to control the power control circuit 30 to adjust the output power of the child safety socket to the required power, thereby supplying power to the electric appliance with higher power and meeting various use requirements of the user.

Referring to fig. 2, fig. 2 is a schematic structural diagram of another embodiment of the child safety power adjusting circuit of the present invention, in this embodiment, the child safety power adjusting circuit further includes:

a first timer 40 and a second timer 50, which are respectively connected with the main control circuit 20;

the main control circuit 20 is further configured to control the first timer 40 to start timing when receiving the unlocking signal, so as to operate in the power adjustment mode when receiving a first timing end signal output by the first timer 40;

and when receiving the power adjustment signal, the second timer 50 starts to time when not receiving the unlock signal and the power adjustment signal, so as to operate in the self-locking operation mode when receiving a second timing end signal output by the second timer 50.

In this embodiment, when the child and the adult output the unlocking signal to the main control circuit 20 due to the erroneous touch of the adjusting circuit 10, the first timer 40 receives the receiving signal at the same time, and outputs the first timing receiving signal to the main control circuit 20 after the first timer 40 delays for 3s, so as to switch the main control circuit 20 to operate in the power adjusting mode, and the possibility of switching the main control circuit 20 to operate in the power adjusting mode due to the erroneous touch is reduced by increasing the time for the adjusting circuit 10 to output the unlocking signal. In this embodiment, when the user finishes adjusting the power and does not operate the adjusting circuit 10 any more, the second timer 50 is used to time for 5s, and if the user does not operate the adjusting circuit 10 within 5s, the second timer 50 outputs a second timing end signal to the main control circuit 20 to switch the main control circuit 20 to operate in the self-locking mode.

In one embodiment, a child-resistant power conditioning circuit includes:

the input end of the indicator light circuit 60 is connected with the main control circuit 20;

the main control circuit 20 is further configured to control the indicator light circuit 60 to operate when receiving the first timing end signal;

and when receiving the second timing end signal, controlling the indicator light circuit 60 to operate.

In this embodiment, the indicator light circuit 60 may be an LED, and when the main control circuit 20 receives the first timing end signal, the main control circuit 20 controls the indicator light circuit 60 to flash at 2 times per second or a certain frequency to prompt the user that the main control circuit 20 operates in the power adjustment mode. When the main control circuit 20 receives the second timing end signal, the main control circuit 20 controls the indicator light circuit 60 to flash at a frequency corresponding to the power control signal, for example, once flash is the power output by the power control circuit according to the power control signal is 200W, that is, the output power of the power control circuit is displayed by flashing.

Referring to fig. 5, fig. 5 is the structural schematic diagram of another embodiment of the child safety power regulating circuit, the indicator light circuit 60 includes luminous first diode D1 and first resistance R1 in this embodiment, luminous first diode D1's positive pole is connected with main control circuit 20, luminous first diode's negative pole is connected with first resistance R1's one end, first resistance R1's other end ground connection, when main control circuit 20 control indicator light circuit 60 during operation, main control circuit 20 exports high level to luminous first diode D1 according to above-mentioned required frequency, flicker according to the frequency that corresponds with luminous first diode D1 of control, first resistance R1 reducible voltage prevents luminous first diode D1 and damages.

Referring to fig. 3, fig. 3 is a schematic structural diagram of another embodiment of the power regulating circuit for children safety of the present invention, in this embodiment, the regulating circuit 10 includes:

a power increase button 1010, the power increase button 1010 being connected to a signal receiving terminal of the main control circuit 20, the power increase button 1010 being configured to output a power increase signal to the main control circuit 20 when operated by a user;

a power reduction button 1020, the power reduction button 1020 is connected to another signal receiving terminal of the main control circuit 20, and the power reduction button 1020 is used for outputting a power reduction signal to the main control circuit 20 when being operated by a user;

the main control circuit 20, the main control circuit 20 is further configured to operate in a power adjustment mode when receiving the power increasing signal and the power decreasing signal at the same time.

In this embodiment, the power increasing button 1010 and the power reducing button 1020 are touch buttons, a user can touch the power increasing button 1010 to output a power increasing signal to the main control circuit 20, or touch the power reducing button 1020 to output a power reducing signal to the main control circuit 20, the user can also touch the power increasing button 1010 and the power reducing button 1020 at the same time, and the main control circuit 20 switches the main control circuit 20 to operate in the power adjusting mode when receiving the power increasing signal and the power reducing signal at the same time, which can be understood that a child is easy to touch in a mess but is not easy to make an action with logic.

Referring to fig. 4, fig. 4 is a schematic structural diagram of another embodiment of the child safety power adjusting circuit of the present invention, in this embodiment, the power control circuit 30 includes:

the zero-crossing detection circuit 3010, the detection end of the zero-crossing detection circuit 3010 is connected to the mains supply, the output end of the zero-crossing detection circuit 3010 is connected to the main control circuit 20, and the zero-crossing detection circuit 3010 is used for detecting the zero crossing point of the mains supply and outputting a zero-crossing point detection signal;

a conduction circuit 3020, wherein a controlled end of the conduction circuit 3020 is connected to the main control circuit 20, an input end of the conduction circuit 3020 is connected to the mains supply, and an output end of the conduction circuit 3020 is connected to the load;

the main control circuit 20 outputs a corresponding power control signal according to the zero crossing point detection signal to control the conduction circuit 3020 to conduct at a corresponding frequency, and outputs the power output by the commercial power to the load.

In this embodiment, the commercial power used by the user is generally a sinusoidal-waveform alternating current, and the power control circuit 30 may control the power value output by the commercial power to the output terminal of the power control circuit 30 by controlling the commercial power to be turned on for a certain time in the cycle, so as to control the power value output by the power control circuit 30 to the load, for example, to be turned on when the positive half cycle 1/4T to 1/2T and the negative half cycle 3/4T to T of the commercial power cycle are performed, so as to control the output terminal of the turn-on circuit 3020 to output half of the commercial power to the load.

It can be understood that, when the commercial power is turned on in the corresponding period, a zero point of the commercial power needs to be obtained, in this embodiment, by setting the zero-crossing detection circuit 3010, the zero-crossing detection circuit 3010 may detect a voltage change of the input commercial power, the zero-crossing detection circuit 3010 detects a voltage change when the commercial power is converted from a negative half cycle to a positive half cycle, the zero-crossing detection circuit 3010 converts the detected voltage change point to a zero point, and outputs a zero-crossing detection signal to the main control circuit 20, the main control circuit 20 receives the zero-crossing detection signal to calculate the zero point of the commercial power, the main control circuit 20 determines a time period required to be turned on in the commercial power period according to the power adjustment signal, and determines the commercial power zero point according to the zero-crossing detection signal, so as to output a corresponding power control signal to control the turn-on circuit 3020 to be turned on in the corresponding time period in the commercial power period, it should be noted that a person skilled in the art may set different power control signals according to the commercial power frequency and/or the commercial power voltage of different standards. In this embodiment, when the conducting circuit 3020 receives the power control signal, the conducting circuit 3020 conducts in a required period of the utility power at a corresponding frequency according to the power control signal, so as to control the utility power to output the required power to the load.

Referring to fig. 6 and 7, in this embodiment, the turn-on circuit 3020 includes a bidirectional thyristor Q1 and a second resistor R2, one main electrode of the bidirectional thyristor Q1 is connected to the zero line, the other main electrode of the bidirectional thyristor Q1 is connected to the zero line, so as to connect the bidirectional thyristor Q1 in series to the zero line, a gate of the bidirectional thyristor Q1 is connected to one end of the second resistor R2, and the other end of the second resistor R2 is connected to the main control circuit 20.

The main control circuit 20 outputs a power control signal to the second resistor R2, and the second resistor R2 outputs the power control signal to the gate of the bidirectional thyristor Q1 to control the connection/disconnection of the bidirectional thyristor Q1 to the zero line, thereby controlling the conduction of the commercial power. The zero-cross detection circuit 3010 includes a second diode D2, a third resistor R3, a fourth resistor R4, a fifth resistor R5, a sixth resistor R6 and a transistor Q2, an anode of the second diode D2 is connected with a live wire, a cathode of the second diode D2 is connected with one end of the third resistor R3, the other end of the third resistor R3 is connected with one end of the fourth resistor R4, the other end of the fourth resistor R4 is connected with one end of the fifth resistor R5, the other end of the fifth resistor R5 is connected with a base of the transistor Q2, a collector of the transistor Q2 is connected with the main control circuit 20, an emitter of the transistor Q2 is grounded, a junction of the fourth resistor R4 and the fifth resistor R5 is connected with one end of the sixth resistor R6, and the other end of the sixth resistor R6 is grounded.

In this embodiment, the tube voltage drop of the second diode D2 is also different according to different conduction voltage drops of materials, the tube voltage drop of a silicon tube is usually 0.7V, and the tube voltage drop of a germanium tube is 0.3V, the second diode D2 of this embodiment is a silicon diode, when the commercial power is in a negative half cycle, the voltage applied between the anode and the cathode of the second diode D2 is the negative half cycle voltage value of the commercial power, that is, when the commercial power is in a range from 1/2T to T, the second diode D2 is in an off state, at this time, no current flows through the third resistor, the fourth resistor, the fifth resistor, and the sixth resistor, that is, the triode Q2 is in the off state, and the collector level of the triode Q2 is a high level output by the main control circuit 20.

When the commercial power is at a positive half cycle, a positive half cycle voltage of the commercial power is applied between the anode and the cathode of the second diode D2 to control the conduction of the second diode D2, that is, when the commercial power is at 0T to 1/2T and the positive half cycle voltage value is greater than 0.7V tube drop, the second diode D2 is in a forward conduction state, and when the triode Q2 is in a conduction state, the conduction voltage Vb of the triode Q2 is optionally 0.7V, the triode Q2 is conducted when the current flowing through the fifth resistor R5 is calculated to be 0.35mA, that is, the voltage at two ends of the fifth resistor R5 is 0.35V, to sum up, when the commercial power is at 0T to 1/2T and the positive half cycle voltage value is greater than 0.7v, that is 1.05V, the triode Q2 is conducted to control the collector and the emitter of the triode Q2 to be communicated, so that the collector level of the triode Q2 is controlled to be a low level, and the main control circuit 20 receives a low level signal, and calculates a zero crossing time of the commercial power.

Referring to fig. 2, fig. 2 is a schematic structural diagram of another embodiment of the child safety power adjusting circuit of the present invention, in this embodiment, the child safety power adjusting circuit further includes:

the current detection circuit 70, a detection end of the current detection circuit 70 is connected with a power end of the load, a feedback end of the current detection circuit 70 is connected with a receiving end of the main control circuit 20, and the current detection circuit 70 is used for detecting a load current of the load, converting the load current into a load current signal and outputting the load current signal to the main control circuit 20;

the main control circuit 20 is further configured to control the power control circuit 30 to output/stop outputting power to the output terminal according to the load current signal.

In this embodiment, the current detection circuit 70 may be a current transformer, etc., when an electrical appliance is connected to the child safety extension socket, a loop is formed in the load connection circuit to generate a current, the current detection circuit 70 performs sampling detection on the load current and converts the detected current into a corresponding load current signal to output to the main control circuit 20, the main control circuit 20 is provided with a current limit value, so that when the main control circuit 20 receives that the load current signal is greater than the current limit value, the main control circuit 20 can output a corresponding power control signal to the power control circuit 30 to control the power control circuit 30 to disconnect the load current to prevent accidents from occurring, and a technician in the art can adjust the current limit value according to the national safety voltage standard and the use scene to adapt to the use scene.

Referring to fig. 8, fig. 8 is a schematic structural diagram of another embodiment of the child safety power regulating circuit of the present invention, in this embodiment, the current detecting circuit 70 includes a current transformer U1, the primary side of the current transformer U1 is connected in series with the power supply end of the load, one end of the secondary side of the current transformer U1 is connected with the anode of a third diode D3, the cathode of the third diode D3 is connected with the anode of a first capacitor C1 with polarity, the cathode of the first capacitor C1 with polarity is connected with the other end of the secondary side of the current transformer U1, the cathode of the third diode D3 is connected with one end of a second capacitor C2, the other end of the second capacitor C2 is connected with the cathode of the first capacitor C1 with polarity, the cathode of the third diode D3 is connected with one end of a seventh resistor R7, the other end of the seventh resistor R7 is connected with the other end of the second capacitor C2, one end of the seventh resistor R7 is connected with the receiving end of the main control circuit 20, the primary side of the current transformer U1 is the current detecting circuit 70, and one end of the seventh resistor R7 is the feedback end of the current detecting circuit 70.

It can be understood that the secondary side of the current transformer U1 may output a corresponding detection current according to a load current flowing through the primary side, the transformation ratio of the current transformer U1 may be 1000/1, when the load current flowing through the load is 1A, the load current on the primary side of the current transformer U1 is 1A, the detection current on the secondary side is 1mA, the detection current is output by the secondary side of the current transformer U1 and flows through the third diode D3, the detection current is rectified by the third diode D3 so that the detection current is a positive half-cycle current, the detection current flows through the seventh resistor R7 to generate a detection voltage, the detection voltage is a voltage from the anode to the cathode of the first capacitor C1 having a polarity and a voltage of the second capacitor C2, the detection voltage is filtered by the first capacitor C1 having a polarity and the second capacitor C2, the main control circuit 20 detects a detection voltage value at one end of the seventh resistor R7, calculates the detection voltage value and the detection current generated by the transformation ratio of the current transformer U1 to realize the load current detection circuit 20.

Referring to fig. 9, in one embodiment, a child-resistant power conditioning circuit includes:

the input end of the voltage stabilizing circuit 80 is connected with the mains supply, the output end of the voltage stabilizing circuit 80 is connected with the power supply end of the control circuit 20, and the voltage stabilizing circuit 80 is used for converting an accessed power supply into a direct current power supply and outputting the direct current power supply to the main control circuit 20.

In this embodiment, by setting the voltage stabilizing circuit 80, the voltage stabilizing circuit 80 can be implemented by a voltage reducing capacitor, a half-wave rectifier circuit, a zener diode, a filter capacitor, a low dropout regulator, and the like, and the voltage stabilizing circuit 80 can generate a corresponding power supply after performing processing such as rectification, voltage reduction, filtering, and the like on the accessed commercial power, that is, after the direct current power supply, provide operating voltage for the main control circuit 20.

Referring to fig. 9, fig. 9 is a schematic structural diagram of a further embodiment of the child safety power regulating circuit of the present invention, in this embodiment, the voltage stabilizing circuit 80 includes a third voltage-reducing capacitor C3 and an eighth resistor R8, one end of the third voltage-reducing capacitor C3 is connected to the live wire of the commercial power, the zero line of the commercial power is grounded, one end of the eighth resistor R8 is connected to one end of the third capacitor, the other end of the eighth resistor R8 is connected to the other end of the third voltage-reducing capacitor C3, the other end of the third voltage-reducing capacitor C3 is further connected to the anode of a fourth diode D4, the cathode of the fourth diode D4 is connected to the cathode of the zener diode DZ, the anode of the zener diode DZ is connected to the zero line of the commercial power, the anode of the fourth diode D4 is further connected to the cathode of the fifth diode D5, the anode of the fifth diode D5 is connected to the zero line of the commercial power, the cathode of the zener diode DZ is connected to the anode of the fourth capacitor C4 with polarity, the cathode of the polarized fourth capacitor C4 is connected with a commercial power zero line, the anode of the polarized fourth capacitor C4 is connected with one end of the fifth electrode C5, one end of the sixth electrode C6 is connected with one end of the seventh electrode C7, the other end of the fifth electrode C5, the other end of the sixth electrode C6 and the other end of the seventh electrode C7 are connected with the commercial power zero line, the anode of the polarized fourth capacitor C4 is connected with the voltage input end of the low-voltage-difference linear voltage stabilizer U2, the grounding end of the low-voltage-difference linear voltage stabilizer U2 is connected with the commercial power zero line, the voltage output end of the low-voltage-difference linear voltage stabilizer U2 is connected with one end of the eighth capacitor C8, the other end of the eighth capacitor C8 is connected with the commercial power zero line, one end of the eighth capacitor C8 is connected with the ninth capacitor C9, the other end of the ninth capacitor C9 is connected with the commercial power zero line, and the voltage stabilizing circuit 80 is arranged at the voltage output end of the low-difference linear voltage stabilizer U2.

It can be understood that the third voltage-reducing capacitor C3, the eighth resistor R8 and the ninth resistor R9 constitute a voltage-reducing circuit, the third voltage-reducing capacitor C3 generates a corresponding capacitive reactance under an ac power with a certain frequency, the maximum current can be limited by the capacitive reactance to reduce the current value, the current flows through the ninth resistor R9 to generate a corresponding voltage value to reduce the voltage of the utility power, and the electric energy stored in the third voltage-reducing capacitor C3 can be discharged through the eighth resistor R8. The fourth diode D4 and the fifth diode D5 form a half-wave rectifier circuit, the fourth diode D4 can block the negative half-cycle current of the mains supply through the positive half-cycle current of the mains supply, the fifth diode D5 can block the positive half-cycle current of the mains supply through the negative half-cycle current of the mains supply, the zener diode DZ, the polar fourth capacitor C4, the fifth capacitor C5, the sixth capacitor C6 and the seventh capacitor C7 form a filter voltage stabilizing circuit, the fourth diode D4 outputs current to the zener diode DZ to control the zener diode DZ to be in a reverse breakdown state, so that a stable voltage is formed between the cathode and the anode of the zener diode DZ, the zener diode DZ usually generates noise and ripples when working, the voltage is filtered through the polar fourth capacitor C4, the fifth electrode C5, the sixth electrode C6 and the seventh electrode C7 to reduce the noise and the ripples, the low-dropout linear regulator U2 further reduces and stabilizes the voltage after receiving the voltage, and the voltage is further filtered by the eighth capacitor C8 and the ninth capacitor C9 and then output to the main control circuit 20.

The utility model also provides a row is inserted to children's safety, including the aforesaid children's safety power regulating circuit.

The child safety power adjusting circuit can refer to the above embodiments, and details are not repeated herein; it can be understood, because the utility model discloses child safety inserts and has used above-mentioned child safety power regulating circuit in the row, consequently, the utility model discloses child safety inserts all technical scheme that the embodiment of row includes the whole embodiments of above-mentioned child safety power regulating circuit, and the technological effect that reaches is also identical, no longer gives unnecessary details here.

The above is only the optional embodiment of the present invention, and not the scope of the present invention is limited thereby, all the equivalent structure changes made by the contents of the specification and the drawings are utilized under the inventive concept of the present invention, or the direct/indirect application in other related technical fields is included in the patent protection scope of the present invention.

Claims (8)

1. The utility model provides a child safety power conditioning circuit, is applied to child safety and inserts row, its characterized in that, child safety power conditioning circuit includes:

the adjusting circuit is used for outputting an unlocking signal and a power adjusting signal when being triggered by a user;

the master control circuit comprises a self-locking working mode and a power regulation mode, a signal receiving end of the master control circuit is connected with the regulation circuit, and the master control circuit is used for working in the power regulation mode when receiving the unlocking signal and outputting a corresponding power control signal according to the power regulation signal in the power regulation mode; the main control circuit works in a self-locking working mode when not receiving the unlocking signal, and outputs a fixed power control signal in the self-locking working mode;

the power control circuit, power control circuit's input and commercial power are connected, power control circuit's output is connected with the load, power control circuit's controlled end with master control circuit connects, power control circuit is used for according to power control signal, adjusts the power of exporting to the output.

2. The child-resistant power conditioning circuit as recited in claim 1, further comprising:

the first timer and the second timer are respectively connected with the main control circuit;

the main control circuit is further configured to control the first timer to start timing when receiving an unlocking signal, so as to operate in a power adjustment mode when receiving a first timing end signal output by the first timer;

and when receiving the power adjusting signal, the second timer starts timing when not receiving the unlocking signal and the power adjusting signal, so as to work in a self-locking working mode when receiving a second timing ending signal output by the second timer.

3. The child-resistant power conditioning circuit as recited in claim 2, wherein the child-resistant power conditioning circuit comprises:

the input end of the indicator light circuit is connected with the main control circuit;

the main control circuit is further used for controlling the indicator light circuit to work when the first timing end signal is received;

and when the second timing end signal is received, controlling the indicator light circuit to work.

4. The child-resistant power conditioning circuit according to claim 1, wherein the conditioning circuit comprises:

the power increasing key is connected with a signal receiving end of the main control circuit and is used for outputting a power increasing signal to the main control circuit when being operated by a user;

the power reduction key is connected with the other signal receiving end of the main control circuit and is used for outputting a power reduction signal to the main control circuit when being operated by a user;

the master control circuit is further configured to operate in a power adjustment mode when receiving the power increase signal and the power decrease signal at the same time.

5. The child-resistant power conditioning circuit of claim 1, wherein the power control circuit comprises:

the detection end of the zero-crossing detection circuit is connected with the mains supply, the output end of the zero-crossing detection circuit is connected with the main control circuit, and the zero-crossing detection circuit is used for detecting the zero crossing point of the mains supply and outputting a zero-crossing point detection signal;

the controlled end of the conduction circuit is connected with the main control circuit, the input end of the conduction circuit is connected with the mains supply, and the output end of the conduction circuit is connected with the load;

and the main control circuit outputs a corresponding power control signal according to the zero crossing point detection signal so as to control the conduction circuit to conduct at a corresponding frequency and output the power output by the commercial power to a load.

6. The child-resistant power conditioning circuit as recited in claim 1, further comprising:

the detection end of the current detection circuit is connected with the power end of a load, the feedback end of the current detection circuit is connected with the receiving end of the main control circuit, and the current detection circuit is used for detecting the load current of the load, converting the load current into a load current signal and outputting the load current signal to the main control circuit;

the main control circuit is further used for controlling the power control circuit to output/stop outputting power to an output end according to the load current signal.

7. The child-resistant power conditioning circuit as recited in claim 1, wherein the child-resistant power conditioning circuit comprises:

the input end of the voltage stabilizing circuit is connected with a mains supply, the output end of the voltage stabilizing circuit is connected with the power supply end of the control circuit, and the voltage stabilizing circuit is used for converting an accessed power supply into a direct current power supply and then outputting the direct current power supply to the main control circuit so as to supply power to the main control circuit.

8. A child-resistant power strip comprising the child-resistant power conditioning circuit of any of claims 1 to 7.

Images