Outdoor WIFI single plug
By designing the control circuit board and metering chip in an outdoor WIFI single plug, detecting current and voltage and automatically cutting off the socket circuit, the problem that existing smart sockets cannot automatically cut off the circuit when the current is too high, and the safety and reliability of the socket are improved.
Patent Information
- Application Number
- CN202421360168.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-14
- Publication Date
- 2025-03-25
- Estimated Expiration
- 2034-06-14
AI Technical Summary
The existing smart socket cannot automatically cut off the circuit when the current is too high when the power grid fluctuates, resulting in the problem of circuit burning.
Design an outdoor WIFI single plug, with a built-in control circuit board, including power supply circuit, control circuit, WIFI module and metering chip. The metering chip detects current and voltage, and controls the relay K on and off through the output signal of the WIFI module to realize automatic shutdown of the socket circuit.
It realizes automatic cutting of the socket circuit when the current is overcurrent, avoiding the circuit burning, and improving the safety and reliability of the socket.
Smart Images
Figure CN222673528U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of sockets, in particular to an outdoor WIFI single socket. Background Art
[0002] A socket is a commonly used electrical device that provides a power interface for household appliances. It is a seat into which one or more circuit wiring can be inserted. Various wiring can be inserted through it to facilitate connection with other circuits. The connection and disconnection between the line and the copper parts can ultimately achieve the connection and disconnection of this part of the circuit.
[0003] With the promotion of the concept of smart home, various types of electrical appliances have launched compatible smart appliances, and socket manufacturers have also launched various types of smart sockets. WIFI socket is a kind of smart socket. After users use WIFI socket to connect electrical appliances, they can connect their mobile phones to WIFI to control the circuit between the main plug and the power socket.
[0004] However, sometimes the power grid fluctuates and the instantaneous current is too large, which can burn out circuits and electrical appliances. The functions of smart sockets are not comprehensive enough. Utility Model Content
[0005] The utility model aims to provide an outdoor WIFI single socket, which can automatically cut off the socket circuit when the circuit is over-current.
[0006] The above technical objectives of the utility model are achieved through the following technical solutions: an outdoor WIFI single plug, including a body plug, at least one power socket is provided on the surface of the body plug, characterized in that: a control circuit board is provided in the body plug, a power circuit, a control circuit, a WIFI module and a metering chip are provided on the control circuit board, the power circuit converts AC mains power into DC power output to power the control circuit, the WIFI module and the metering chip, the metering chip detects the current and voltage input by the body plug, the metering chip is electrically connected to the WIFI module, and the WIFI module outputs a signal to the control circuit to control the on-off of the circuit between the body plug and the power socket.
[0007] The utility model is further configured as follows: the control circuit includes a relay K and a transistor Q1, one end of the main circuit of the relay K is connected to the main body plug and the other end is connected to the power socket, the trigger circuit of the relay K is connected to the collector of the transistor Q1, the emitter of the transistor Q1 is grounded, and the base of the transistor Q1 is connected to the WIFI module, and the WIFI module outputs a signal to control the on and off of the transistor Q1 and thus controls the on and off of the relay K.
[0008] The utility model is further configured as follows: the metering chip is a single-phase multifunctional electric energy metering chip of BL0937B.
[0009] The utility model is further configured as follows: the current sampling pin of the metering chip is connected to the current detection circuit, the voltage sampling pin of the metering chip is connected to the voltage detection circuit, and the metering chip samples the current and voltage input by the main body plug.
[0010] The utility model is further configured as follows: the WIFI module adopts a WIFI module chip of model CB2S, and the chip CB2S has a built-in MCU that can process signals scalably.
[0011] The utility model is further configured as follows: a button is provided on the main body plug, and the button signal is connected to the WIFI module.
[0012] The utility model is further configured as follows: the main body plug is a German standard plug.
[0013] The utility model is further configured as follows: a socket sleeve is provided on the control circuit board, a copper sheet is provided inside the socket sleeve, and the copper sheet is electrically connected to the control circuit board.
[0014] The utility model is further configured as follows: a protection door is provided between the socket sleeve and the power socket, and the protection door is fixed to the bottom of the power socket.
[0015] The utility model is further configured as follows: the protection door comprises a bottom shell, a bottom plate and a spring; the bottom plate is slidably arranged in the bottom shell; and the spring is respectively in contact with the bottom shell and the bottom plate.
[0016] Compared with the prior art, the outdoor WIFI single plug of the utility model realizes over-current protection. When it is detected that the current is greater than the protection value, the RL signal is automatically turned off, so that the socket is automatically disconnected. BRIEF DESCRIPTION OF THE DRAWINGS
[0017] Figure 1 It is a stereogram of the outdoor WIFI single plug in Example 1.
[0018] Figure 2 This is a circuit structure block diagram in Example 1.
[0019] Figure 3 It is the control circuit schematic diagram in Example 1.
[0020] Figure 4 This is a schematic diagram of the circuit of the metering chip in Example 1.
[0021] Figure 5 It is the schematic diagram of the voltage detection and current detection circuit in Example 1.
[0022] Figure 6 It is the schematic diagram of the WIFI module circuit in Example 1.
[0023] Figure 7 It is the schematic diagram of the power supply circuit in Example 1.
[0024] Figure 8 It is a cross-sectional view of the outdoor WIFI single plug in Example 2.
[0025] Fig. 9 This is the internal structure diagram of the outdoor WIFI single plug in Example 2.
[0026] In the figure: 100, main body plug; 200, power socket; 300, control circuit board; 301, socket cover; 302, copper sheet; 400, protection door; 401, bottom shell; 402, bottom plate; 403, spring; 404, guide surface; 405, jack; 500, waterproof cover. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model; it is obvious that the described embodiments are only part of the embodiments of the utility model, rather than all of the embodiments, and all other embodiments obtained by ordinary technicians in this field based on the embodiments of the utility model without making creative work are within the scope of protection of the utility model.
[0028] Example 1
[0029] like Figure 1-7 As shown, this embodiment discloses an outdoor WIFI single plug, including a body plug 100, a power socket 200 is provided above the surface of the body plug 100, a control circuit board 300 is provided in the body plug 100, and a power circuit, a control circuit, a WIFI module and a metering chip are provided on the control circuit board 300. The power circuit converts the AC mains connected to the body plug 100 into a DC power output to provide the control circuit, the WIFI module and the metering chip with the power required for operation. The metering chip can detect the current and voltage of the AC mains input to the body plug 100. The metering chip is electrically connected to the WIFI module to transmit an electrical signal to the WIFI module. The control circuit controls the circuit on and off between the body plug 100 and the power socket 200. The WIFI module outputs a signal to the control circuit to control the circuit on and off between the body plug 100 and the power socket 200. When the metering chip detects that the current is overcurrent, it outputs an overcurrent electrical signal to the WIFI module, and the WIFI module automatically turns off the signal output, so that the socket is automatically disconnected.
[0030] like Figure 3As shown, in this embodiment, the control circuit controls the connection and disconnection of the socket by controlling the closing and disconnection of the relay. In the execution circuit, the input end of the main circuit of relay K is connected to the live wire end L to R, the output end of the main circuit of relay K is connected to the output end L-OUT of the socket, one end of the trigger circuit of relay K is connected to a 5V voltage (in this embodiment, the rated current of relay K is 5V), and the other end is connected to the collector of transistor Q1, the emitter of transistor Q1 is grounded, the base of transistor Q1 is connected to resistor R4 and then connected to the signal point RL, a resistor R5 is connected between the base and emitter of transistor Q1, and a diode D1 is connected in parallel with the trigger circuit of relay K to cut off the inductive current protection circuit. When a high level is input at the RL end, transistor Q1 is turned on, the potential difference between the two ends of the trigger circuit of relay K is 5V, relay K is energized, the main circuit is turned on, the line is turned on, and the socket is connected; when there is no signal input at the RL end, transistor Q1 is turned off, relay K is disconnected, the main circuit is disconnected, and the socket is disconnected.
[0031] like Figure 4 As shown, in this embodiment, the metering chip adopts the single-phase multifunctional electric energy metering chip BL0937B. BL0937B integrates 2-way high-precision Sigma-Delta ADC, reference voltage, power management and other analog circuit modules, as well as digital signal processing circuits for processing active power, current voltage effective value and other electrical parameters. The working power supply of chip BL0937B is 3.3V input from pin 1VCC, and pins 2V1P and 3V1N of chip BL0937B are current sampling pins connected to the current detection circuit. Pin 4V2P of chip BL0937B is a voltage sampling pin connected to the voltage detection circuit. Pin 6CF, pin 7CF1 and pin 8SEL of chip BL0937B are output terminals connected to the control chip to output voltage, current data and overcurrent signal. In this embodiment, the WIFI module is used as a control chip to connect chip BL0937B; each sampling pin of chip BL0937B is respectively connected to the voltage detection circuit and the current detection circuit to sample the input voltage signal and current signal.
[0032] like Figure 5 As shown, the resistors R15, R16, R17, R18, and R19 of the voltage detection circuit are connected in series in sequence as current limiting resistors. Generally, the larger the resistance value, the larger the volume. In order to control the occupied area and heat dissipation of the control circuit board 300, multiple resistors are used in series to divide the voltage as current limiting resistors in the embodiment; one end of the resistor R15 is connected to the power input terminal N-IN, and the other end of the resistor R19 is connected to the resistor R20 and then grounded to form a loop. The metering chip is connected to the resistor R20 for sampling, and the capacitor C15 is connected in parallel with the resistor R20 to make the voltage across the resistor R20 smooth and stable.
[0033] A resistor R13 is connected in series between the live input terminal L-IN and L to R of the current detection circuit, and both ends of the resistor R13 are connected to a metering chip respectively. The metering chip uses a current signal flowing through the resistor R13, wherein the resistor R11 and the resistor R13 are respectively connected between the resistor R13 and the pin of the metering chip for current limiting, and the capacitors C8 and C11 are respectively connected to the resistor R11 and the resistor R13.
[0034] like Figure 6 As shown, the WIFI module adopts the WIFI module chip of model CB2S. The chip CB2S supports WIFI and Bluetooth dual wireless modes, and has a built-in MCU for expandable signal processing. The operating voltage of the chip CB2S is 3.0V~3.6V. The key input terminal is connected to the chip CB2S pin 5, and the chip CB2S pin 7 is connected to the LED lamp bead to indicate the working status of the socket. The pins 2, 4, and 9 of the chip CB2S are respectively connected to the corresponding pins of the metering chip BL0937B for inputting the chip BL0937B data signal to perform operations. The chip CB2S pin 11 outputs the signal RL to drive the relay to close and open to achieve the connection or disconnection of the socket.
[0035] like Figure 7 As shown, the power supply circuit is connected to the power input end of the main body plug 100, and after rectification and filtering, the voltage is stepped down and stabilized to output the voltage required by the power supply circuit, control circuit, WIFI module and metering chip. The first-level voltage stabilization of the power supply circuit adopts the BP85226D chip to stabilize the output of 5V voltage, and the second-level voltage stabilization adopts the 1117-3.3 voltage regulator to stabilize the output of 3.3V voltage.
[0036] Example 2
[0037] like Figure 8 As shown, an outdoor WIFI single plug includes a main body plug 100, a power socket 200 is provided on the surface of the main body plug 100, the main body plug 100 is a German standard plug, a control circuit board 300 is provided in the main body plug 100, a socket sleeve 301 is provided on the control circuit board 300, a copper sheet 302 is provided in the socket sleeve 301, the copper sheet 302 is electrically connected to the control circuit board 300, the main body plug 100 is electrically connected to the circuit board, and the electrical appliance is connected to the copper sheet 302 in the socket sleeve 301 after being inserted into the power socket 200, and the control circuit on the control circuit board 300 controls the circuit between the main body plug 100 and the power socket 200 to provide electrical energy for the electrical appliance.
[0038] like Fig. 9As shown, a protective door 400 is provided between the socket sleeve 301 and the power socket 200. The protective door 400 is fixed at the bottom of the power socket 200. The protective door 400 includes a bottom shell 401, a bottom plate 402 and a spring 403. The bottom plate 402 is slidably arranged in the bottom shell 401. The spring 403 abuts against the bottom shell 401 and the bottom plate 402 respectively. A guide surface 404 and a socket 405 are provided on the bottom plate 402. When an electrical appliance is inserted from the power socket 200, the electrical appliance presses against the guide surface 404 to make the bottom plate 402 overcome the elastic force of the spring 403 and slide, exposing the copper sheet 302 below. The electrical appliance is inserted through the protective door 400 and connected to the copper sheet 302.
[0039] A waterproof cover 500 is provided on the power socket 200 , and a distal end of the waterproof cover 500 is rotatably connected to the power socket 200 .
[0040] The above description is only a preferred embodiment of the present utility model, so all equivalent changes or modifications made according to the structure, features and principles described in the scope of the present utility model patent application are included in the scope of the present utility model patent application.
Claims
1. An outdoor WIFI single plug, comprising a main body plug (100), wherein the surface of the main body plug (100) is provided with at least one power socket (200), characterized in that: The body plug (100) is provided with a control circuit board (300), and the control circuit board (300) is provided with a power supply circuit, a control circuit, a WIFI module and a metering chip. The power supply circuit converts AC mains power into DC power output to supply power to the control circuit, the WIFI module and the metering chip. The metering chip detects the current and voltage input by the body plug (100). The metering chip is electrically connected to the WIFI module. The WIFI module outputs a signal to the control circuit to control the on / off of the circuit between the body plug (100) and the power socket (200).
2. The outdoor WIFI single socket according to claim 1, characterized in that: The control circuit comprises a relay K and a transistor Q1, one end of the main circuit of the relay K is connected to the main body plug (100) and the other end is connected to the power socket (200), the trigger circuit of the relay K is connected to the collector of the transistor Q1, the emitter of the transistor Q1 is grounded, and the base of the transistor Q1 is connected to the WIFI module, and the WIFI module outputs a signal to control the on and off of the transistor Q1, thereby controlling the on and off of the relay K.
3. The outdoor WIFI single socket according to claim 1, characterized in that: The metering chip is a single-phase multifunctional electric energy metering chip of BL0937B.
4. The outdoor WIFI single socket according to claim 3, characterized in that: The current sampling pin of the metering chip is connected to a current detection circuit, the voltage sampling pin of the metering chip is connected to a voltage detection circuit, and the metering chip samples the current and voltage input by the main body plug (100).
5. The outdoor WIFI single socket according to claim 1, characterized in that: The WIFI module adopts a WIFI module chip of model CB2S, and the chip CB2S has a built-in MCU that can process signals scalably.
6. The outdoor WIFI single socket according to claim 1, characterized in that: The main body plug (100) is provided with a button, and the button signal is connected to the WIFI module.
7. The outdoor WIFI single socket according to claim 1, characterized in that: The main body plug (100) is a German standard plug.
8. The outdoor WIFI single socket according to claim 7, characterized in that: A socket sleeve (301) is provided on the control circuit board (300), a copper sheet (302) is provided inside the socket sleeve (301), and the copper sheet (302) is electrically connected to the control circuit board (300).
9. The outdoor WIFI single socket according to claim 8, characterized in that: A protection door (400) is provided between the socket sleeve (301) and the power socket (200), and the protection door (400) is fixed to the bottom of the power socket (200).
10. The outdoor WIFI single socket according to claim 9, characterized in that: The protection door (400) comprises a bottom shell (401), a bottom plate (402) and a spring (403); the bottom plate (402) is slidably arranged in the bottom shell (401); and the spring (403) is respectively in contact with the bottom shell (401) and the bottom plate (402).