CN218733415U - Intelligent switch device based on power line carrier - Google Patents

Abstract

The utility model belongs to the technical field of intelligent switch, a power line carrier-based intelligent switching device is disclosed, a gateway and a plurality of switch terminals are respectively connected and communicated through power line carrier communication, a singlechip, a power line carrier communicator connected with the singlechip, an electric energy collector, a temperature sensor and a power supply are arranged in the gateway and the switch terminals, and an internet of things communicator and a smoke sensor connected with the singlechip are also arranged in the gateway; the gateway is connected with a remote server through wireless signals, and the remote server is connected with the mobile phone terminal through wireless signals. The utility model discloses the power consumption condition of equipment is convenient for inquire in real time; the overcurrent protection current threshold and the overcurrent time parameter can be manually or remotely set to adapt to different types of electric equipment; the temperature and smoke information can be detected in real time, and the risk of fire is reduced; accessible cell-phone APP remote control, look over the information of each switch, also off-line, on-the-spot operation switch realize with the same function of current switch.

Description

Intelligent switch device based on power line carrier

Technical Field

The utility model belongs to the technical field of the intelligence switch, especially, relate to an intelligent switch device based on power line carrier.

Background

At present, in daily life, household appliances, lamps, air circuit breakers, switch panels and the like are installed at fixed positions, and when the household appliances, the lamps, the air circuit breakers, the switch panels and the like are used inconveniently, for example, the lamps cannot be opened or closed remotely, and long-term power consumption equipment cannot be checked in real time; in addition, the existing air-break circuit breaker can not change the protection current value and the overcurrent time parameter according to the load size, and if a high-current circuit breaker is adopted for a low-power electrical appliance such as a lamp, effective overcurrent protection can not be realized; the existing switch device does not have the functions of detecting overcurrent, temperature, smoke and the like, so that the risk of fire hazard is increased; some existing products also have wireless switches, but the reliability of wireless transmission is inferior to that of wired transmission, and the real-time performance is limited, and if a special communication cable is arranged, the cost is very high. Therefore, the intelligent switch device capable of being remotely controlled, performing overcurrent protection, detecting temperature and smoke and performing power carrier communication can solve the problems.

Through the above analysis, the problems and defects of the prior art are as follows:

(1) The existing switch devices are installed at fixed positions, and cannot remotely turn on or turn off lamps and cannot check long-term power consumption equipment in real time.

(2) The existing air-break circuit breaker cannot change the protection current value according to the load, cannot realize effective overcurrent protection, and cannot check the load hung under the circuit breaker in real time.

(3) The existing air circuit breaker has no setting of overcurrent time parameters. Generally, for an inductive load, the impact current at the moment of power-on is large, so that the air switch is easy to trip, and under the condition, the air switch with large capacity needs to be adopted; after the load is normally started, the current is far smaller than the current during power-on, and the air switch with larger capacity is adopted and cannot play a role in protection. This problem can be solved if the idle switch has an over-current time parameter set at this time.

(4) The existing switchgear does not have the functions of detecting overcurrent, temperature, smoke and the like, which increases the risk of fire.

(5) The existing wireless switch has poor wireless transmission reliability compared with wired transmission, and has limitation on real-time performance, and the cost is very high if a special communication cable is arranged.

SUMMERY OF THE UTILITY MODEL

To the problem that prior art exists, the utility model provides an intelligence switching device based on power line carrier.

The utility model discloses a realize like this, an intelligent switch device based on power line carrier is provided with:

a gateway and a plurality of switch terminals;

the gateway and the switch terminal are internally provided with a single chip microcomputer, a power carrier communicator, an electric energy collector, a temperature sensor and a power supply which are connected with the single chip microcomputer, and the gateway is internally provided with an Internet of things communicator and a smoke sensor which are connected with the single chip microcomputer;

the Internet of things communicator is connected with the single chip microcomputer through the UART serial port and conducts data interaction.

The gateway is connected with a remote server through an NBIOT network and realizes data interaction, and the remote server is connected with a mobile phone terminal through a 4G or 5G network and realizes data interaction;

the gateway and the switch terminals are connected through power cables respectively, and data interaction is carried out through a power carrier communication mode. Each switch terminal is connected to a different load through a relay circuit, respectively. The load can be a socket or various electric equipment.

The power carrier communication module is connected with the single chip microcomputer through a UART serial port and performs data interaction.

Further, relays are further arranged inside the gateway and the switch terminals, the relay drive circuit is realized by a transmitter bias circuit formed by a triode S8050, and the load is connected to the output port of the relay.

Furthermore, keys are installed in the gateway and the switch terminal and connected through an ADC port single chip microcomputer. A plurality of buttons adopt the series mode, insert the ADC port of singlechip, and different buttons are pressed, and the voltage value of inputing to the ADC port is different, and this kind of scheme can accurately discern the button, also can reduce IO mouth and occupy. The button realizes manual closing and also switches the display interface of the OLED display screen through the button.

Furthermore, the outer sides of the gateway and the switch terminal are both provided with an LED display screen, and the LED display screen is connected with the single chip microcomputer through an IIC interface.

Furthermore, the gateway and the switch terminal have current sampling and overcurrent protection functions, and the overcurrent protection current threshold value can be set manually or by changing on a mobile phone APP; the overcurrent time can be changed manually or through a mobile phone APP so as to adapt to the requirements of different loads. The current sampling is realized by adopting a current transformer, and the overcurrent protection is realized by adopting a comparator consisting of an operational amplifier.

Further, the overcurrent time parameter principle is that when the current is overloaded, a timer in the single chip starts to time, when the time reaches a set overcurrent time parameter, whether overcurrent occurs or not is judged again, and if the overcurrent occurs, a switch cuts off the load to realize a trip function; if the overcurrent state disappears after the set time, the instantaneous overcurrent is judged, and the switch keeps the connection state.

With the above technical solution and the technical problem solved, please analyze the following aspects and advantages of the technical solution to be protected of the present invention are:

to the technical problem that above-mentioned prior art exists and the degree of difficulty of solving this problem, combine closely the utility model discloses an in technical scheme and the research and development process that will protect result and data etc. analyze in detail, deeply the utility model discloses technical problem how technical scheme solves, some that bring after the solution problem possess creative technological effect. The specific description is as follows:

the utility model can realize the real-time measurement of the voltage, the current and the power of the lower hanging load, and can be convenient for inquiring the power consumption condition of the equipment in real time;

the utility model can replace the existing air circuit breaker, and the protection current can be manually configured, thus realizing the short-circuit device with one device configured with various parameter specifications;

the utility model discloses can adjust the time parameter that overflows, can adjust the time parameter that overflows according to the load type, for example perception load, capacitive load, both can more accurate setting overflow the parameter, also can more effectual protection load.

The utility model can detect temperature and smoke information in real time, and cut off the power supply when high temperature or smoke occurs, thereby reducing the risk of fire;

the utility model discloses can pass through cell-phone APP remote control, look over the information of each switch. Meanwhile, the switch can be operated off-line and on-site, and the same function as the existing switch is realized.

Drawings

Fig. 1 is a schematic structural diagram of an intelligent switching device based on power line carrier according to an embodiment of the present invention;

fig. 2 is a schematic structural diagram of a gateway according to an embodiment of the present invention;

fig. 3 is a schematic structural diagram of a switch terminal according to an embodiment of the present invention;

fig. 4 is a schematic diagram of a load current sampling and overcurrent protection circuit provided by an embodiment of the present invention;

fig. 5 is a schematic diagram of a relay driving circuit provided by an embodiment of the present invention;

fig. 6 is a schematic diagram of an interface circuit of a power line carrier communication module according to an embodiment of the present invention;

fig. 7 is a schematic diagram of an interface circuit of an NBIOT communication module according to an embodiment of the present invention;

fig. 8 is a schematic diagram of an OLED display circuit interface circuit provided in an embodiment of the present invention;

fig. 9 is a schematic diagram of an auxiliary power circuit provided by an embodiment of the present invention;

fig. 10 is a schematic diagram of a key identification circuit according to an embodiment of the present invention.

Detailed Description

In order to make the objects, technical solutions and advantages of the present invention more apparent, the present invention is further described in detail with reference to the following embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and are not intended to limit the invention.

This section is an explanatory embodiment for expanding the technical solutions of the claims so as to make those skilled in the art fully understand how to implement the present invention.

As shown in fig. 1, in the intelligent switching device based on power carrier provided by the embodiment of the present invention, a gateway device and a plurality of switch terminals are hung on a power cable, and the switch terminals may be an air-break circuit breaker, a socket, etc.; various loads, such as electric equipment such as lamps and electrical appliances, are hung below the switch terminal; data interaction is carried out between the gateway and each switch terminal through power line carrier communication; the gateway is provided with an Internet of things communicator which can carry out data interaction with a remote server; the mobile phone APP can perform data interaction with the remote server, so that data of the switch terminals can be inquired, and each switch terminal can be controlled through the mobile phone APP. The switch terminal can be operated in an off-line mode and also can be operated in a remote mode.

Fig. 2 is a schematic diagram of a gateway structure. The intelligent control system mainly comprises a single chip microcomputer control unit, a relay, a power carrier communication module, an Internet of things communication module, a power module, a key, a temperature acquisition module, an electric energy acquisition module, smoke sensing, an OLED display and the like. The single chip microcomputer control unit is used as a control core of the gateway system, the single chip microcomputer type adopts STM32F103C8T6, a FreeRTOS embedded operating system is operated, and detection of various sensing signals, carrier communication data interaction, internet of things communication data interaction and control logic processing are achieved. The relay realizes the power-on or power-off operation of the load controlled by the single chip microcomputer. The power line carrier communication module realizes the data interaction function of the gateway and the switch terminal, and comprises a switch terminal uploading switch state information and a control and query command transmitted by the gateway forwarding mobile phone APP, for example, the mobile phone APP can query the information of the voltage, current, power, switch state and the like of the switch terminal, and the mobile phone APP can also open or close the relay of the switch terminal. The internet of things communicator realizes data forwarding of the gateway and the server. The power module supplies power to the whole gateway module, the power module outputs 2 voltage levels including 3.3V and 12V, the 3.3V power supply mainly supplies power to the single chip microcomputer and other logic circuits, the 12V power supply mainly supplies power to the power carrier communication module, and the input voltage of the power module is 220VAC. The key realizes off-line opening or closing of the switch terminal, and in addition, the key can also realize the switching of an OLED display interface. The temperature acquisition module realizes real-time detection on the ambient temperature, and when the temperature is higher than a set value, the load is closed, so that over-temperature protection is realized. The electric energy acquisition module realizes the detection of load voltage, current and power, can also record the accumulated power consumption of the load, and is realized by adopting an HLW8032 chip module. The smoke sensing module collects smoke data, and when the sampling value is higher than a set value, the load is closed, and warning information is sent to the server. The OLED display module is mainly used for displaying information of voltage, current, power, switch states and the like of a real-time load.

Fig. 3 is a schematic diagram of a switch terminal structure, which mainly includes a single chip microcomputer control unit, a power line carrier communication module, a key, a power supply module, an Oled display module, a temperature acquisition module, an electric energy acquisition module, and a relay.

The single chip microcomputer control unit mainly realizes centralized control of the whole module, including data communication, signal acquisition, on-off control and the like with the gateway, and the model of the single chip microcomputer adopts STC8G1K7A. And the power carrier communication module realizes data interaction between the switch terminal and the gateway. The relay can be opened or closed by the key, and simultaneously, the content displayed by the OLED can be switched. The power module supplies power to the whole module system, the power module has two voltage levels, namely 12V and 3.3V,12V voltage supplies power to the power carrier communication module, 3.3V supplies power to the singlechip and the logic module, and the input voltage of the power module is 220VAC. The LED display module is mainly used for displaying information of voltage, current, power, switch state and the like of a real-time load. Temperature acquisition realizes the detection to ambient temperature, adopts temperature sensitive resistor as temperature sensor, and when ambient temperature was higher than the setting value, the relay disconnection was given the load outage. The electric energy acquisition module realizes the detection of load voltage, current and power, can also record the accumulated power consumption of the load, and is realized by adopting an HLW8032 chip module.

Fig. 4 shows a current sampling and overcurrent protection circuit for the gateway and the switch terminal. The current transformer is connected from a J2 port, a TVS tube D1 protects a post-stage circuit, and the resistors R37 and R1 convert current signals output by the current transformer into voltage signals; diode D2 realizes single-phase rectification, and electric capacity C5 electric capacity is great, constitutes a rectification filter circuit on the two sides, converts alternating current signal into direct current voltage signal finally. And then, the sampled current signal is accessed to an ADC port of the singlechip through a following circuit formed by an operational amplifier UA1A, so that current sampling is realized. The second-order RC low-pass filter composed of R17, C16, R25 and C19 converts the PWM _ OUT signal sent by the singlechip into a direct-current voltage, the direct-current voltage is used as the threshold value of the overcurrent protection, and in addition, the threshold value of the overcurrent protection can be changed by changing the duty ratio of the PWM _ OUT signal.

As shown in fig. 5, the relay driving circuit of the gateway and the switch terminal, the CTR _ BUTTON port is connected to an IO port of the single chip, and the resistors R9 and C10 form a low-pass filter circuit, so that the erroneous opening of the relay caused by interference at the IO port is reduced. The transistor Q1 forms a common transmitter fixed bias circuit. The resistor R12 and the diode D4 are selected according to the switching device, and when the relay is used, the circuit board is welded with the D4 and is not welded with the R12; when the solid-state relay is used, the circuit board is welded with R12 and is not welded with D4. The resistor R10 is a current limiting resistor. Two ends of the control coil of the relay are connected to J3. In the specific working process, when the single chip microcomputer outputs a CTR _ BUTTON with a high level, the relay is opened; and when the single chip microcomputer outputs the CTR _ BUTTON to be in a low level, the relay is closed.

Fig. 6 shows a power line carrier communication module of the gateway and the switch terminal, which selects ES1667 or ES1642 of the east soft carrier. The module port L, N is connected to the live and neutral wires of the power line. GND is connected to a weak current reference ground port of the single chip microcomputer system, a V3V3 port is connected with a +3.3V power supply, a V12V port is connected with a +12V port, and RxD and TxD are UART serial port communication ports of the carrier communication module. And the RST port is a reset port of the module and is connected with an IO port of the single chip microcomputer.

As shown in fig. 7, the NOIOT module of the gateway selects SIM7020C, is connected to the UART serial port of the single chip microcomputer through UART serial ports TXD and RXD, and performs data interaction with the single chip microcomputer through an AT command.

Fig. 8 shows an OLED screen module circuit of the gateway and the switch terminal, which uses a 0.96-inch small OLED screen, and the screen performs data interaction with the single chip microcomputer through an IIC port, and the resistor R11 and the resistor R13 are pull-up resistors.

Fig. 9 shows an auxiliary power circuit of the gateway and the switch terminal, which adopts a high-energy cubic isolation power supply AP0512N10 module to convert 220VAC voltage into +5V and +12V dc power supplies. The +5V voltage is obtained to be +3.3V through the power supply module AMS 1117-3.3.

As shown in fig. 10, the KEY circuit is composed of four resistors R2, R3, R4, and R5 connected in series, the resistors R6 and C3 form low-pass filtering, so that output voltage fluctuation caused by KEY jitter can be reduced, and the port ADC _ KEY is connected to the ADC port of the single chip. The working principle is that when different KEYs are pressed, due to the fact that the resistors divide voltage, the voltage output to the ADC _ KEY port is different, and the single chip microcomputer can recognize the KEYs by recognizing the ADC voltage.

The utility model discloses a theory of operation is:

the utility model discloses an operation process does: under the offline condition, when a key of the switch terminal is pressed, a relay of the switch terminal is turned on at the moment to supply power to a load hung below the switch terminal, the load works normally, meanwhile, the switch terminal uploads state information to the gateway in a power carrier communication mode, and the gateway records the switch state; if the switch terminal is in an open state, when the key is pressed down, the relay in the switch terminal is closed, the load is powered off, the state of the switch terminal is uploaded to the gateway, and the gateway records the state of the switch. In the online condition, when the switch terminal key is pressed, the gateway can upload the state information of the switch terminal to the server besides normally opening or closing the relay and uploading the switch state to the gateway.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are merely for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

The above description is only for the specific implementation of the present invention, but the protection scope of the present invention is not limited thereto, and any modifications, equivalent replacements and improvements made within the spirit and principle of the present invention should be covered by the protection scope of the present invention.

Claims (6)

1. An intelligent switching device based on power carrier, characterized in that, the intelligent switching device based on power carrier is provided with:

a gateway and a plurality of switch terminals;

the gateway and the switch terminal are internally provided with a single chip microcomputer, a power carrier communication module, an electric energy collector, a temperature sensor and a power supply which are connected with the single chip microcomputer, and an Internet of things communicator and a smoke sensor which are connected with the single chip microcomputer are also arranged in the gateway;

the Internet of things communicator is connected with the single chip microcomputer through a UART serial port and performs data interaction;

the gateway and the switch terminals are respectively connected through power cables and perform data interaction through a power carrier communication module, and each switch terminal is respectively connected with different loads through a relay circuit;

the power carrier communication module is connected with the single chip microcomputer through a UART serial port and performs data interaction.

2. A power carrier-based intelligent switching device according to claim 1, wherein said gateway is connected to a remote server through an NBIOT network and performs data interaction, and said remote server is connected to a mobile phone terminal through a 4G or 5G network and performs data interaction.

3. An intelligent power carrier-based switching device according to claim 1, wherein a relay is further disposed inside the gateway and the switch terminal, a relay driving circuit of the relay is implemented by a transmitter bias circuit composed of a transistor S8050, and a load is connected to an output port of the relay.

4. The intelligent switching device based on power line carrier as claimed in claim 1, wherein the gateway and the switch terminal are provided with keys at their outer sides, the keys are connected through an ADC port single chip microcomputer, and a plurality of keys are connected in series.

5. The intelligent switching device based on power line carrier as claimed in claim 1, wherein an Oled display screen is installed on the outer sides of the gateway and the switch terminal, and the Oled display screen is connected with the single chip microcomputer through an IIC interface.

6. A power carrier based intelligent switching device according to claim 1, wherein said gateway and switch terminals are each provided with a current transformer for current sampling and a comparator for overcurrent protection.

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