CN216560817U - Power consumption behavior monitoring system based on CAT1 network communication - Google Patents

Abstract

The utility model discloses a power consumption behavior monitoring system based on CAT1 network communication, which comprises a data acquisition module, a control module, a power supply module, a communication module, a status indication module and a cloud middleware. The leakage current of the main circuit is collected by the zero-sequence current sensor, and the current flowing in the main circuit is collected by the Hall current sensor. Collect the voltage in the main circuit and perform step-down conditioning. Then, it is input into the control module for sampling and filtering, and then uploaded to the cloud middleware through the communication module. After judging the working state of the circuit and the type of electrical appliances, it returns to the control module, and the control module drives the status indication module to display the circuit power consumption information. This application performs wireless communication based on CAT1, uses non-embedded sensors to collect circuit information, and reduces equipment layout costs.

Description

A power consumption behavior monitoring system based on CAT1 network communication

technical field

The utility model belongs to the technical field of electronic communication, in particular to a power consumption behavior monitoring system based on CAT1 network communication.

Background technique

The rapid development of electronic communication technology, the improvement of residents' living standards, the continuous increase of the types of electrical appliances used by residents, and the increase in the complexity of the lines of the power system have increased the hidden dangers of electricity safety.

The power consumption behavior monitoring system can monitor the power consumption of electrical appliances in an all-round way, and report abnormal behaviors to the system in time or cut off the power supply, so as to protect people's life and property safety. With the diversification of electrical equipment, more and more scenarios require monitoring of electrical behavior, such as base station operation monitoring, battery car charging monitoring, etc.

Considering the living environment, most base stations or charging sheds will be set up at a certain distance from residential areas, and the priority of network supply will be relatively low. Most of the existing power consumption behavior monitoring systems use wired communication, such as Ethernet, RS485, etc. for data transmission, which increases the difficulty of system layout and increases maintenance costs. However, the commonly used low-power wireless communication methods, such as LORA and NBIOT, cannot be well applied in the power consumption monitoring system due to the narrow bandwidth.

SUMMARY OF THE INVENTION

Aiming at the deficiencies of the prior art, the utility model proposes a power consumption behavior monitoring system based on CAT1 network communication. Data transmission is performed through CAT1 network communication, and it is seamlessly connected to the existing LTE network, which can meet the requirements of edge computing equipment. Usage requirements. In addition, the use of non-contact sensors for information collection reduces the cost of system layout, and improves convenience and product compatibility.

A power consumption behavior monitoring system based on CAT1 network communication includes a data acquisition module, a control module, a power supply module, a communication module, a status indication module and cloud middleware.

The data acquisition module collects the current, voltage, temperature and other raw data of the main circuit through non-contact sensors.

Preferably, the data acquisition module uses a Hall sensor to collect the current of the main circuit, and uses a voltage transformer to collect the voltage of the main circuit.

The control module samples and calculates the original data, and outputs the current main circuit information.

The communication module uses a CAT1 communication module to realize wireless transmission between the control module and the cloud middleware.

The cloud middleware judges the type of electrical appliance in the main circuit and its working state according to the main circuit information output by the control module, and returns the judgment result to the control module.

The state indicating module receives an instruction from the control module, and displays the current main circuit information, the type of electrical appliance and its working state.

The power supply module is used to provide working voltage for the data acquisition module, the control module, the communication module, the relay module and the status indication module.

Preferably, a relay module is also included. The relay module is used for receiving an instruction from the control module to cut off the power supply of the main circuit.

The utility model has the following beneficial effects:

1. Use non-intrusive sensors for information collection to realize the monitoring of electricity consumption in residential houses or charging sheds, without affecting the existing circuit, and easy to use.

2. The wireless communication between the control module and the cloud middleware is realized based on the CAT1 module, which can not only improve the information transmission speed, but also directly access the existing LTE network, improve the compatibility of equipment installation and reduce the installation cost.

Description of drawings

Figure 1 is a schematic diagram of a power consumption behavior monitoring system based on CAT1 network communication;

2 is a schematic diagram of a power supply module circuit in an embodiment;

Figures 3(a)-(d) are the circuit schematic diagrams of the data acquisition module in the embodiment, in which Figure 3(a) is the current acquisition, Figure 3(b) is the leakage current acquisition, and Figure 3(c) is the voltage acquisition. 3(d) is temperature collection;

Figures 4(a)-(d) are the circuit schematic diagrams of the communication module in the embodiment; Figure 4(a) is the CAT1 communication module, Figure 4(b) is the power supply circuit of the communication module, and Figure 4(c) is the signal The transmission part, Figure 4(d) is the circuit around the communication module;

Fig. 5 is the circuit schematic diagram of the control module in the embodiment;

Fig. 6 is the circuit schematic diagram of the status indication module in the embodiment;

FIG. 7 is a circuit schematic diagram of the relay module in the embodiment.

Detailed ways

The utility model will be further explained below in conjunction with the accompanying drawings;

As shown in Figure 1, a power consumption behavior monitoring system based on CAT1 network communication includes a data acquisition module, a control module, a power supply module, a communication module, a status indication module and cloud middleware.

The power supply module converts the 5V input voltage into 3.3V, 2.5V, 1.8V through a voltage regulator and a voltage reference chip, and further realizes the conversion of digital voltage and analog voltage through components such as resistors, capacitors, and inductors. The acquisition module, control module, communication module, relay module and status indication module provide stable working voltage and reference voltage.

As shown in Figure 2, the 5V to 3.3V power supply circuit includes the first light-emitting diode LED1, the fifty-seventh and fifty-eighth capacitors C57 and C58, the sixty-second and fifty-ninth capacitors C62 and C59, and the forty-ninth capacitors C62 and C59. Resistor R49, the twelfth voltage stabilizer U12; the first light-emitting diode LED1 is a light-emitting diode, the fifty-seventh and fifty-eighth capacitors C57 and C58 are electrolytic capacitors, and the twelfth voltage stabilizer U12 is AMS1117-3.3 . The analog 5V voltage is input from pin 3 of the twelfth voltage stabilizer U12, and after step-down, the digital 3.3V voltage is output from pin 2 of the twelfth voltage stabilizer U12. Specifically, pin 3 of the twelfth voltage regulator is connected to the positive end of the fifty-seventh capacitor C57 and one end of the fifty-ninth capacitor C59; pin 1 is connected to one end of the sixty-second capacitor C62 and the fifty-seventh capacitor C59. The negative end of C57, the negative end of the fifty-eighth capacitor, the negative electrode of the first light-emitting diode LED1, the other end of the fifty-ninth capacitor C59 and the digital ground are connected; the 4th pin is connected to the other end of the sixty-second capacitor C62; Pin 2 is connected to the positive end of the fifty-eighth capacitor C58 and one end of the forty-ninth resistor R49. The anode of the first light-emitting diode LED1 is connected to the other end of the forty-ninth resistor R49. When the 2-pin of the twelfth voltage stabilizer U12 can output voltage normally, the first light-emitting diode LED1 lights up to indicate that 5V turns to 3.3 The V power supply circuit works normally. One end of the third inductor L3 is input with a digital 3.3V voltage, and the two ends of the fifty-second and fifty-third capacitors C52 and C53 are respectively connected to the analog ground and the other end of the third inductor L3, and obtained from the other end of the third inductor L3 Analog 3.3V voltage.

3.3V to 1.8V power supply circuit, including the sixty-third capacitor C63 and the thirteenth voltage stabilizer U13; the model of the thirteenth voltage stabilizer U13 is AMS1117-1.8, and the 2-pin output of the twelfth voltage stabilizer U12 The digital 3.3V voltage is input to pin 3 of the thirteenth voltage regulator U13, and after the step-down, pin 2 of the thirteenth voltage regulator U13 outputs a digital 1.8V voltage. Specifically, both ends of the sixty-third capacitor C63 are respectively connected to pins 1 and 4 of the thirteenth voltage regulator U13. Pin 4 of the thirteenth voltage regulator U13 is connected to pin 2, and pin 2 outputs a digital 1.8V voltage. One end of the fourth inductor L4 is input with a digital 1.8V voltage, and the two ends of the sixtieth and sixty-first capacitors C60 and C61 are respectively connected to the analog ground and the other end of the fourth inductor L4, and the analog ground is obtained from the other end of the fourth inductor L4. 1.8V voltage.

The 2.5V reference voltage output circuit includes a voltage reference chip U14 and four capacitors, of which the voltage reference chip U14 is REF3025, and the fifty-sixth capacitor C56 is an electrolytic capacitor; input an analog 5V voltage to pin 1 of the voltage reference chip U14, Obtain 2.5V reference voltage from pin 3. Specifically, pin 1 of the voltage reference chip U14 is connected to one end of the fifty-fourth and fifty-fifth capacitors C54 and C55 and the positive end of the fifty-sixth capacitor C56, and pin 3 is connected to one end of the sixty-fourth capacitor, the fifth The fourteenth and fifty-fifth capacitors C54 and the other ends of C55, the negative end of the fifty-sixth capacitor C56 and the analog ground are connected, and the 2-pin is connected to the other end of the sixty-fourth capacitor C64. The 2.5V reference voltage output by pin 2 is used in the information acquisition module as a reference signal for current zero-crossing detection and voltage division. The digital ground and the analog ground are connected through the second inductor L2.

The data acquisition module collects the current of the main circuit through the Hall sensor, uses the voltage transformer to collect the voltage of the main circuit, uses the zero sequence current sensor to collect the leakage current of the main circuit, and collects the temperature of the main circuit through the temperature sensitive resistor. These sensors all collect data on the main circuit in a non-invasive way, so that the equipment will not affect the original circuit during installation.

As shown in Figure 3(a), the current acquisition part includes sensor acquisition and arithmetic processing. The live wire of the main circuit passes through the induction hole of the Hall sensor. The output of the Hall sensor is filtered and then operationally amplified, and then transmitted to the control module. Among them, the model of the Hall sensor U9 is HCS-ES5-75A, and the operation processing part selects the op amp of the model OPA2333A. Specifically, pin 1 of the hall sensor U9 is connected to one end of the twenty-seventh and twenty-eighth capacitors C27 and C28 and the analog 5V voltage, and pin 2 is connected to the other end of the twenty-seventh and twenty-eighth capacitors C27 and C28 and Analog ground connection; pin 4 is connected to one end of the forty-fourth and forty-fifth capacitors C44 and C45 and the 2.5V voltage, and the other end of the forty-fourth and forty-fifth capacitors C44 and C45 is connected to the analog ground. Pin 3 of the Hall sensor U9 outputs the detected main circuit current, and is connected to pin 5 of the tenth operational amplifier U10 through the thirty-eighth resistor R38 for amplification. Pin 5 of the tenth operational amplifier U10 is connected to the analog ground through the thirty-ninth resistor R39, pin 8 is connected to the analog 3.3V voltage, and connected to the analog ground through the twenty-sixth capacitor to provide the working voltage of the tenth operational amplifier U10 ; Pin 6 is connected to one end of the thirty-sixth and thirty-seventh resistors R36 and R37; pin 7 is connected to the forty-third capacitor C43, one end of the thirty-third resistor R33 and the other end of the thirty-sixth resistor R36. One end of the forty-sixth capacitor C46 is connected to the other end of the thirty-seventh resistor R37. The forty-second capacitor C42 and the cathode of the seventh diode D7 are connected to the other end of the thirty-third resistor R33. The other ends of the forty-sixth, forty-third, and forty-two capacitors C46, C43, and C42 and the anode of the seventh diode D7 are connected to the analog ground. The cathode of the seventh diode D7 outputs the amplified current detection signal to the control module. The seventh diode D7 is used to indicate whether the current collecting part detects a current signal. Pin 3 of the tenth operational amplifier U10 is connected to pin 7 through the thirty-fifth resistor R35 for zero-crossing detection. Pin 2 of the tenth operational amplifier U10 is connected to one end of the thirty-first and thirty-second resistors R31 and R32, the other end of the thirty-first resistor R31 is connected to 2.5V, and the other end of the thirty-second resistor R32 is connected to The analog ground is connected. After the 2.5V reference voltage is divided by the 31st and 32nd resistors R31 and R32, the input voltage of pin 2 of the tenth operational amplifier U10 is 1.5V, which provides a comparison signal for zero-crossing detection. Pin 1 of the tenth operational amplifier U10 outputs the zero-crossing detection result to the control module.

As shown in Figure 3(b), the leakage current acquisition part also includes sensor acquisition and operational amplification. The zero-sequence current sensor collects the leakage current in the main circuit and transmits it to the control module after amplification. Specifically, both ends of the twenty-fourth resistor R24 are respectively connected to the two pins of the zero-sequence current sensor P12. Pin 2 of the zero-sequence current sensor is connected to the analog ground, pin 1 is connected to pin 5 of the eighth operational amplifier U8 through the twenty-third resistor R23, and the collected leakage current information is amplified. The model of the eighth operational amplifier U8 is OPA2333A, and pins 1, 2, 3, and 4 are all connected to the analog ground; pin 8 is connected to the analog 3.3V voltage, and is connected to the analog ground through the twenty-first capacitor C21, which is the operation of the operational amplifier. Provide stable voltage. Pin 6 of the eighth operational amplifier U8 is connected to the analog ground through the twenty-second resistor R22, and is connected to pin 7 through the first feedback resistor RF1 to form a feedback loop. The anode of the fifth diode D5 is connected to pin 7 of the eighth operational amplifier U8, and the cathode is connected to the twenty-second capacitor C22, one end of the twenty-first resistor R21, and the cathode of the fourth diode D4. The second capacitor C22, the other end of the twenty-first resistor R21 and the anode of the fourth diode D4 are connected to the analog ground. Pin 7 of the eighth operational amplifier U8 outputs the amplified leakage current, which is connected to the control module after passing through the fifth diode D5, where the fifth diode D5 is a rectifier diode of type 1N4007, and the fourth diode is D4 It is a 3V Zener diode with model LM3Z3V0T1G.

As shown in Figure 3(c), the voltage acquisition part collects the main circuit voltage through the voltage transformer. In order to ensure that the output voltage signal meets the sampling range of the DSP chip, the output of the voltage transformer needs to be buck-regulated. Specifically, pin 2 of the voltage transformer T1 is connected to the neutral line of the main circuit through the forty-second resistor R42, and pin 1 is connected to the live line of the main circuit. Pin 4 is connected to the analog ground, and pin 3 outputs the collected voltage signal. One end of the forty-ninth capacitor C49 is connected to pin 3 of the voltage transformer T1, and the other end is connected to one end of the forty-first, forty-three, and forty-fifth resistors R41, R43, and R45. The other end of the forty-first resistor R41 is connected to the 2.5V voltage, and the other end of the forty-fifth resistor R45 is connected to the analog ground. The other end of the forty-third resistor R43 is connected to the control module. This circuit converts the mains voltage into an AC small signal less than 3V, and sends it to the control module. One end of the fifty-first capacitor C51 is connected to the other end of the forty-third resistor R43, and the other end is connected to the analog ground.

As shown in Figure 3(d), the temperature acquisition part passes through the temperature sensitive resistor model NCT3950. According to the temperature of the main circuit, the resistance value of the temperature sensitive resistor will change, so that the output voltage will change, and the control module will collect the temperature according to the temperature. The output voltage judges the temperature of the main circuit. Specifically, one end of the temperature sensitive resistor NTC1 is connected to one end of the fiftieth capacitor C50 and the analog ground, and the other end is connected to the analog 3.3V voltage through the fortieth resistor R40, and is connected to the other end of the fiftieth capacitor C50, and the output A voltage signal that reflects the temperature of the main circuit.

The communication module is based on CAT1 communication, and realizes wireless transmission between the control module and the cloud middleware, including a CAT1 communication module, a transmission antenna and a peripheral circuit. CAT1 communication supports terminal downlink rates of up to 10Mbps, and because the communication network belongs to the 4G network category, IoT devices can be connected to LTE networks with lower power consumption and lower cost. Although CAT4 and higher solutions support high speed, their cost price is usually relatively high for the IoT industry, and the high integration of CAT1 provides customers with the best price/performance ratio. Compared with NB-IoT, CAT1 has more obvious advantages in communication function. NB-IoT is suitable for scenarios where only a small amount of data is transmitted and in a fixed state. Typical such as water meter, electricity meter, gas meter. CAT1 can not only transmit larger data, but also has good mobility and voice function. As shown in Fig. 4(a), the core of the communication module is the CAT1 communication chip U6 whose model is ML302. As shown in Figure 4(b), pin 3 of the second voltage stabilizer U2 receives an analog 5V voltage. After the voltage is stepped down, pin 2 outputs a digital 3.8V voltage, which is then processed by capacitor filtering and inductance decoupling as CAT1 communication chip U6 Provide a stable 3.8V operating voltage. Pin 3 of the second voltage stabilizer U2 is connected to the positive end of the second electrolytic capacitor CE2, and pin 1 is connected to one end of the first and second resistors R1 and R2. The negative end of the second electrolytic capacitor CE2 and the other end of the second resistor R2 are both connected to the digital ground. The other end of the first resistor R1 is connected to pin 2 of the second voltage regulator U2. The anode of the third diode D3 is connected to pin 2 of the second voltage stabilizer U2, and the negative electrode is connected to the digital ground through the ninth resistor R9, which is used to indicate whether the second voltage stabilizer U2 successfully outputs a 3.8V voltage. The cathode of the zener diode DZ1, the anode of the first electrolytic capacitor CE1, one end of the first inductor L1, and one end of the third, fourth, and fifth capacitors C3, C4, and C5 are all connected to pin 2 of the second voltage stabilizer U2 . The anode of the zener diode DZ1, the cathode of the first electrolytic capacitor CE1, and the other ends of the third, fourth, and fifth capacitors C3, C4, and C5 are all connected to the digital ground. The other end of the first inductor L1 outputs a filtered digital 3.8V voltage, which is provided to the CAT1 communication chip U6 for use. Pins 18, 19, 38, and 39 of the CAT1 communication chip U6 are connected to the digital 3.8V voltage output by the first inductor L1; 1, 6, 10, 20, 80, 76, 73, 63, 61, 45, 46, 48, 49, 56, 57, 59, 60, 28, 37, 40, 88, 94, 117, 118, 119, 120, 121, 122, 123, 124, 125, 126, 138, 139, 140, 141, 142, 143, 144, 145, 146, 147, 148, 149, 150, 151, 152, 153, 154, 155, 156, 157, 158, 159, 160, 161, 162, 163, 164, 165, 166, 167, Pin 168 is connected to the digital ground; pin 2 is connected to the base of the second transistor Q2 through the sixth resistor R6, the emitter of the second transistor Q2 is connected to the digital ground, and the collector is connected to the first diode D1. The negative electrode is connected, and the positive electrode of the first diode D1 is connected to the digital 3.3V voltage through the eighth resistor R8. Pin 79 is connected to the base of the first transistor Q1 through the fourth resistor R4, the emitter of the first transistor Q1 is connected to the digital ground, the collector is connected to the negative electrode of the second diode D2, and the second diode The anode of tube D2 is connected to the digital 3.3V voltage through a fifth resistor R5. The first diode D1 is the communication module status indicator, which glows when the module is in the wake-up state; the second diode D2 is the networking indicator, which flashes slowly after the connection is successful, and flashes rapidly when it is not connected to the network;

As shown in Figure 4(c), one end of the first and second capacitors C1 and C2 is connected to pin 36 of CAT1 communication chip U6 and 1 of USIM card U3, and the other end is connected to pin 4 of USIM card U3 and digital ground. One end of the eighth capacitor C8 is connected to pin 2 of the USIM card U3 and pin 34 of the CAT1 communication chip U6, and the other end is connected to the digital ground. One end of the seventh capacitor C7 is connected to pin 3 of the USIM card U3 and pin 35 of the CAT1 communication chip U6, and the other end is connected to the digital ground. One end of the sixth capacitor C6 is connected with the 6 pin of the USIM card U3 and the 33 pin of the CAT1 communication chip U6, and the other end is connected with the digital ground. One end of the third resistor R3 is connected to the 3 pin of the ESD protection chip U1, and the other end is connected to the 6 pin of the USIM card U3; The pins are respectively connected to pins 1, 2, 6 and 3 of the USIM card U3. The USIM card U3 provides traffic for wireless communication, and the ESD protection chip U1 is used to protect the communication module from working stably. The 47th pin of the CAT1 communication chip U6 is connected to the 3rd pin of the antenna U4 through the seventh resistor R7, and the main circuit information sampled and calculated by the control module is sent to the cloud middleware. One ends of the thirteenth and fourteenth capacitors C13 and C14 are respectively connected to both ends of the seventh resistor R7, and the other ends are both connected to the digital ground. Both pins 1 and 2 of the antenna U4 are connected to the digital ground.

As shown in Fig. 4(d), the CAT1 communication chip U6 is debugged through the level conversion chip U5 whose model is TXB0108PWR. One end of the tenth resistor R10 is connected to the 62 pin of the CAT1 communication chip U6, and the other end is connected to the 10 pin of the level conversion chip U5; one end of the ninth and eleventh capacitors C9 and C11 are connected to the 62 pin of the CAT1 communication chip U6 and the level Pin 2 of the conversion chip U5, and the other end is connected to the digital ground; one end of the tenth and twelfth capacitors C10 and C12 are connected to the digital 3.3 voltage and pin 19 of the level conversion chip U5, and the other end is connected to the digital ground; the level conversion chip Pins 4, 5, 6, and 7 of U5 are respectively connected to pins 4, 5, 30, and 29 of CAT1 communication chip U6. The pins 1, 3, 8, 9, 11, 12, 13, 18, and 20 of the level conversion chip U5 are suspended, and the CAT1 communication chip U6 is debugged through the 14, 15, 16, and 17 pins of the level conversion chip U5. The 16th pin of the CAT1 communication chip U6 is connected to the collector of the third transistor Q3, and is connected to the digital ground through the fifteenth capacitor C15, the emitter of the third transistor Q3 is connected to the digital ground, and the base is connected to the digital ground through the tenth capacitor C15. A resistor R11 is connected to the control module; pin 17 of the CAT1 communication chip U6 is connected to the collector of the fourth transistor Q4, and is connected to the digital ground through the sixteenth capacitor C16, and the emitter of the fourth transistor Q4 is connected to Digital ground, the base is connected to the control module through the twelfth resistor R12. When the system is powered on and starts to initialize the network, the control module outputs a high level, and then outputs a low level after keeping it for 3S, so that the 17th pin of U6 becomes a high level after keeping the low level for 3S, and the module starts to work. When the module is abnormal, repeat the above operation twice to restart the device.

The control module samples and calculates the original data, and outputs the current main circuit information. The core CPU of the control module selects the DSP chip U7 whose model is TMS320F28335. As shown in Figure 5, pins 169, 172, 173, and 174 of the DSP chip U7 are connected to the digital 3.3V voltage through the thirteenth, fourteenth, fifteenth, and sixteenth resistors R13, R14, R15, and R16 respectively; pin 142 Connect to the digital 3.3V voltage through the eighteenth resistor R18; pins 56, 55, 1, and 176 are connected to the ground through the seventeenth, eighteenth, twenty, and nineteenth capacitors C17, C18, C20, and C19 respectively; 81, Pin 82 is connected through the twenty-third capacitor C23; pins 25 and 26 are connected to the digital 3.3V voltage through the nineteenth and twentieth resistors R19 and R20 respectively; 84, 9, 71, 93, 107, 121, 143, 159, 170 pins are connected to digital 3.3V voltage, 4, 15, 23, 29, 61, 101, 109, 117, 126, 139, 146, 154, 167 pins are connected to digital 1.8V voltage, 31, 59 pins are connected to analog 1.8V voltage, 34, 45 pins are connected to analog 3.3V voltage, 32, 58, 33, 44 pins are connected to analog ground, 3, 8, 14, 22, 30, 60, 70, 83, 92, 103, 106, 108, 118, 120, 125, 140, 144, 147, 155, 160, 166, 171 are connected to digital ground; pin 42 receives the current information of the main circuit, pin 39 receives the leakage current information of the main circuit, and pin 46 receives the main circuit pin 49 receives the temperature information of the main circuit; pins 5 and 6 are connected to the bases of the third and fourth transistors Q3 and Q4 through the eleventh and twelfth resistors R11 and R12 respectively; DSP chip U7 The 68 pin receives the result of zero-crossing detection, the 104 pin is connected to one end of the first crystal oscillator Y1, and is connected to the digital ground through the twenty-fourth capacitor C24; the 102 pin is connected to the other end of the first crystal oscillator Y1, and is connected to the second The fifteenth capacitor C25 is connected to the digital ground; the 80th pin is connected to the digital 3.3V voltage through the thirty-fourth resistor R34, and is connected to the digital ground through the forty-seventh capacitor C47, and the two ends of the reset button RESET1 are respectively connected to the forty-seventh At both ends of the capacitor C47, when the monitoring system has abnormal operation of the program, or needs to be upgraded and maintained, press the reset button, and the control module resets all modules and restarts.

According to the main circuit information output by the control module, the cloud middleware judges the type of electrical appliances in the main circuit and their working states, and returns the judgment result to the control module, and the control module drives the state indication module to display the current main circuit information and usage. Type of appliance and its working state. The status indication module includes LCD screen, LED display light and buzzer. As shown in Figure 6, pins 7, 10, 11, 12, and 13 of the DSP chip U7 are connected to pins 1, 2, 3, 4, and 5 of the LCD screen JP2, respectively, to transfer the content to be transmitted to the LCD screen JP2, press the button The two ends of P9 are respectively connected to pin 179 of DSP chip U7 and the digital ground to control the LCD screen JP2 to page down. Page. The pins 130, 131, and 132 of the DSP chip U7 are connected to the negative poles of the red, blue, and green diodes DR1, DB1, and DG1, respectively, and the positive poles of the red, blue, and green diodes DR1, DB1, and DG1 are respectively , Forty-six resistors R51, R48, R46 are connected to the digital 3.3V voltage, among which the green LED is the normal operation light, when the system is not dangerous and there is no fault, the light is always on. The blue light is the network status indicator, flashes when the network is connecting, and stays on when the connection is successful. Red is an abnormal alarm light. This light is long on when there is a fault, such as sensor failure and abnormal line temperature. This light flashes with dangerous information such as dangerous electrical appliances and arc danger. Pin 133 of the DSP chip U7 is connected to the base of the sixth transistor Q6 through the forty-seventh resistor R47, and both ends of the fiftieth resistor R50 are respectively connected to the base and the emitter of the sixth transistor Q6. The emitter of the sixth transistor Q6 is connected to the digital ground, the collector is connected to the 2 pin of the buzzer B1, and the 1 pin of the buzzer B1 is connected to the digital 3.3V voltage. When the DSP outputs a high level, the buzzer sounds, otherwise the DSP outputs a low level and the buzzer does not sound.

As shown in Figure 7, the relay module receives the level signal from pin 89 of the DSP chip U7. One ends of the twenty-fifth and twenty-sixth resistors R25 and R26 are connected to the 89 pin of the DSP chip U7, and the other ends are respectively connected to the base and the emitter of the fifth transistor Q5. The emitter of the fifth transistor Q5 is connected to the digital ground, the collector is connected to pin 2 of the relay M1 and the anode of the sixth diode D6, and the cathode of the sixth diode D6 is connected to the digital 5V voltage. Pin 1 of relay M1 is connected to the live wire of the main circuit through a 5*20/200mA fuse, and pin 4 is connected to the neutral wire. When the middleware determines that there is a dangerous electrical behavior, it sends an instruction to the terminal, the control module outputs a high level control relay, and the relay controls the AC contactor to cut off the power supply. When the resident confirms that the dangerous situation has been eliminated, the middleware sends an instruction to the terminal. The control module outputs a low level to restore the power supply.

Claims (9)

1. A power consumption behavior monitoring system based on CAT1 network communication, characterized in that: comprising a data acquisition module, a control module, a power supply module, a communication module, a status indication module and a cloud middleware; The data acquisition module collects the raw data of the main circuit through non-contact sensors, including current, voltage and temperature; The control module samples and calculates the original data, and outputs the current main circuit information; The communication module uses a CAT1 communication module to realize wireless transmission between the control module and the cloud middleware; The cloud middleware judges the type of the electrical appliance in the main circuit and its working state according to the main circuit information output by the control module, and returns the judgment result to the control module; The state indicating module receives an instruction from the control module, and displays the current main circuit information, the type of electrical appliance and its working state; The power supply module is used to provide working voltage for the data acquisition module, the control module, the communication module, the relay module and the status indication module. 2 . A power consumption behavior monitoring system based on CAT1 network communication as claimed in claim 1 , wherein the data acquisition module uses a Hall sensor to collect the current of the main circuit, and uses a voltage transformer to collect the voltage of the main circuit. 3 . 3. a kind of electricity behavior monitoring system based on CAT1 network communication as described in claim 1 or 2, it is characterized in that: data acquisition module collects current by Hall sensor, uses voltage transformer to collect voltage, uses zero sequence current sensor to collect Leakage current, the temperature is collected through the thermistor. 4. A kind of power consumption behavior monitoring system based on CAT1 network communication as claimed in claim 3, it is characterized in that: the current and leakage current collected by the data acquisition module are amplified and then input to the control module, and the collected voltage is divided by voltage After conditioning, enter the control module. 5. A power consumption behavior monitoring system based on CAT1 network communication as claimed in claim 1, characterized in that: the power supply module converts the 5V input voltage into a 2.5V reference voltage, which is used for the data acquisition module to perform current zero-crossing detection or reduction. pressure. 6 . The power consumption behavior monitoring system based on CAT1 network communication as claimed in claim 1 , characterized in that it further comprises a relay module. 7 . 7. A kind of power consumption behavior monitoring system based on CAT1 network communication as described in claim 1 or 6, it is characterized in that: the relay module receives the instruction from the control module through the triode, drives the relay with small current, controls the switch of the main circuit power supply . 8 . The power consumption behavior monitoring system based on CAT1 network communication according to claim 7 , wherein the relay is connected to the live wire of the main circuit through a fuse with a model of 5*20/200mA. 9 . 9 . The power consumption behavior monitoring system based on CAT1 network communication according to claim 1 , wherein the status indication module comprises an LCD screen, an LED indicator light and a buzzer. 10 .

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