CN204205719U - A kind of circuit breaker control circuit possessing radio communication and function of measuring - Google Patents

Abstract

The utility model relates to a circuit breaker control circuit with wireless communication and metering functions, including a power supply, a main control circuit, a wireless communication circuit, a data memory, a carrier circuit, and a leakage current detection and switching control circuit; the leakage current detection and The switching control circuit includes a relay, a bridge rectifier, a piezoresistor, a leakage detection magnetic ring and a thyristor. The leakage detection magnetic ring passes through the neutral wire and the live wire to connect with the bridge rectifier. The common terminal is connected in parallel with the relay coil and the piezoresistor, and the thyristor is connected in parallel between the common cathode and the common anode of the bridge rectifier stack, and the parallel connection with the thyristor also includes a circuit in series with a resistance and a capacitor; the leakage current The detection and switching control circuit is connected to the leakage protector; this circuit has the function of electric energy measurement, which can measure the power consumption of the circuit, transmit the information through the wireless communication circuit, and then transmit it to the intelligent gateway through the power line carrier communication method, so as to realize the household electricity consumption detection of the situation.

Description

A circuit breaker control circuit with wireless communication and metering functions

technical field

The utility model relates to a circuit breaker control circuit with wireless communication and metering functions, which belongs to the technical field of electricity safety management and control.

Background technique

Since the invention and use of electricity by human beings, electricity has not only brought a lot of convenience to human beings, but also brought disasters to human beings. Due to factors such as the uncapturability of electricity and the difficulty of human control, in some cases, electrical appliances may burn out, cause fires, or cause people to get an electric shock. In order to solve such problems, people have developed leakage protectors. Leakage protector, commonly known as leakage switch, is a protective device used to prevent personal electric shock and electrical fire when the circuit or electrical insulation is damaged and short-circuited to the ground. It is generally installed on the socket circuit of each household distribution box and the general power distribution of the whole building The power inlet line of the box, which is specially used to prevent electrical fires.

Ordinary leakage protection relay is composed of zero-sequence leakage detection magnetic ring, release and auxiliary contact of output signal. It can cooperate with high-current automatic switch, as the general protection of low-voltage power grid or the leakage, grounding or insulation monitoring protection of the main circuit. When there is a leakage current in the main circuit, since the auxiliary contact and the separation release of the main circuit switch are connected in series to form a circuit, the auxiliary contact connects the separation release and disconnects the air switch, AC contactor, etc., making it trip and cut off the main circuit. circuit. The auxiliary contact can also be connected to the sound and light signal device to send out an electric leakage alarm signal to reflect the insulation status of the line.

However, the current leakage protectors only have the function of overcurrent or overload protection, and cannot measure and view the power consumption and related information.

Utility model content

The technical problem to be solved by the utility model is to provide a circuit breaker control circuit with wireless communication and metering functions, which can measure the power consumption of various electrical appliances in the family through these shunt air switches and leakage protectors. Realize the user's supervision of the electricity consumption of household appliances.

In order to solve the above problems, the utility model adopts the following technical solutions:

A circuit breaker control circuit with wireless communication and metering functions, including a power supply, a main control circuit, a wireless communication circuit, a data memory, a carrier circuit, and a leakage current detection and switching control circuit; the leakage current detection and switching control circuit Including relays, bridge rectifiers, piezoresistors, leakage detection magnetic rings and thyristors, leakage detection magnetic rings pass through neutral wires and live wires to connect with bridge rectifiers, non-common terminals of bridge rectifiers and relays The coil and the piezoresistor are connected in parallel, and the silicon controlled rectifier is connected in parallel between the common cathode and the common anode of the bridge rectifier stack. At the same time, the silicon controlled silicon is connected in parallel with a resistor and a capacitor connected in series; the leakage current detection and switching The control circuit is connected to the leakage protector.

Further, the main control circuit adopts ESEM16 SOC chip with electric energy metering DSP; the main control circuit is connected with the wireless communication circuit and the data memory, stores the collected power data in the data memory, and forwards it to the router through the wireless communication circuit.

Further, the carrier circuit adopts SSC1650 integrated power line communication chip, the carrier circuit is connected to the main control circuit, the front end of the carrier circuit is also connected to a coupling filter circuit, and the coupling filter circuit couples the communication signal to the power line, or receives the coupling signal from the power line sent to the carrier circuit.

Furthermore, the wireless communication circuit adopts the HW2000 wireless communication circuit, supports 2.4G ISM working frequency band and GFSK modulation mode, and is connected to the router through the 2.4G frequency band.

The beneficial effects of the utility model:

The utility model provides a circuit breaker control circuit with wireless communication and measurement functions. The circuit has the function of electric energy measurement and can measure the power consumption of each branch, which is obtained from the intelligent circuit breaker through wireless communication, and then through the power line carrier The communication method is transmitted to the smart gateway, and then the smart gateway transmits it to the user's mobile phone or tablet computer through WiFi, so as to realize the detection of the power consumption of the family.

Description of drawings

Figure 1 is a schematic diagram of the leakage current detection and switching control circuit;

Figure 2 is a schematic diagram of the main control circuit;

Fig. 3 is a schematic diagram of the carrier circuit;

Fig. 4 is a schematic diagram of a wireless communication circuit;

Detailed ways

As shown in Figure 1, the leakage current detection and switching control circuit includes a relay, a bridge rectifier stack, a piezoresistor, a leakage detection magnetic ring and a thyristor, and the leakage detection magnetic ring body passes through the neutral wire and the live wire and The bridge rectifier is connected, the non-common terminal of the bridge rectifier is connected in parallel with the relay coil and the piezoresistor, the thyristor is connected in parallel between the common cathode and the common anode of the bridge rectifier, and the thyristor is also connected in parallel with the thyristor A circuit in which a resistor and a capacitor are connected in series; the leakage current detection and switching control circuit is connected to the leakage protector; the leakage protector is installed in the line, the primary coil is connected to the line of the power grid, and the secondary coil is connected to the leakage protector release connection.

When the electrical equipment is running normally, the current in the line is in a balanced state, and the sum of the current vectors in the leakage detection magnetic ring is zero (the current is a vector with a direction, such as "+" in the direction of outflow, and "-" in the return direction , the currents going back and forth in the leakage detection magnetic ring are equal in size and opposite in direction, and the positive and negative cancel each other out). Since there is no residual current in the primary coil, the secondary coil will not be induced, and the switching device of the leakage protector operates in a closed state.

As shown in Figure 2, the main control circuit uses ESEM16 SOC chip with electric energy metering DSP; integrated Cortex-M0 core; three timers/counters, one hardware watchdog WDT, one high-speed asynchronous receiver transmitter UART, one Multi-functional analog-to-digital converter ADC; 512X32 (2K×8) Bits data memory SRAM, in addition integrated 9KX32 (36KX8) bits program memory FLASH, the main control circuit is connected with the wireless communication circuit and data memory, and the collected power data is stored in In the data memory, and forwarded to the router through the wireless communication circuit.

As shown in Figure 3, the carrier circuit uses the SSC1650 integrated power line communication chip, the carrier circuit is connected to the main control circuit, and the front end of the carrier circuit is also connected to a coupling filter circuit, which couples the communication signal to the power line, or receives the signal from the power line. The coupling signal is sent to the carrier circuit.

As shown in Figure 4, the wireless communication circuit adopts the HW2000 wireless communication circuit, supports 2.4G ISM working frequency band and GFSK modulation mode, connects with the router through the 2.4G frequency band, and the wireless communication circuit communicates with the MCU through the SPI bus.

The above is only a specific embodiment of the utility model, but the scope of protection of the utility model is not limited thereto, and any change or replacement that is not thought of through creative work should be covered within the scope of protection of the utility model . Therefore, the protection scope of the present utility model should be determined by the protection scope defined in the claims.

Claims (4)

1. possess a circuit breaker control circuit for radio communication and function of measuring, it is characterized in that: comprise power supply, governor circuit, radio communication circuit, data storage, carrier circuit and leakage current test and control circuit of operating a switch; Described leakage current test and control circuit of operating a switch comprise relay, rectifier, piezo-resistance, detection of electrical leakage magnet ring and controllable silicon, detection of electrical leakage magnet ring circle body is connected with rectifier with live wire through zero line, extreme and the relay coil of the non-co-of rectifier and piezo-resistance parallel connection, controllable silicon is connected in parallel between the common cathode of rectifier and common anode pole, simultaneously and the circuit also comprising a resistance and capacitances in series of controllable silicon parallel connection; Described leakage current test and control circuit of operating a switch are connected with earth leakage protective device.

2. a kind of circuit breaker control circuit possessing radio communication and function of measuring according to claim 1, is characterized in that: what described governor circuit adopted is the SOC that ESEM16 is with electric energy metrical DSP; Governor circuit is connected with radio communication circuit, data storage, is stored in data storage by the electric quantity data of collection, and is transmitted to router by radio communication circuit.

3. a kind of circuit breaker control circuit possessing radio communication and function of measuring according to claim 1, it is characterized in that: described carrier circuit adopts SSC1650 integrated electric line of force communication chip, carrier circuit is connected with governor circuit, carrier circuit front end is also connected with coupling filter circuit, be coupled filter circuit by coupling communication signals on power line, or reception sends to carrier circuit from the coupled signal on power line.

4. a kind of circuit breaker control circuit possessing radio communication and function of measuring according to claim 1, it is characterized in that: described radio communication circuit adopts HW2000 radio communication circuit, support 2.4G ISM working frequency range and GFSK modulation system, be connected with router by 2.4G frequency range.