CN216560817U

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

Info

Publication number: CN216560817U
Application number: CN202123051035.2U
Authority: CN
Inventors: 张庐林; 周磊
Original assignee: Jiaxinghuabing Internet Of Things Technology Co ltd; Hangzhou Dianzi University
Current assignee: Jiaxinghuabing Internet Of Things Technology Co ltd; Hangzhou Dianzi University
Priority date: 2021-12-07
Filing date: 2021-12-07
Publication date: 2022-05-17
Anticipated expiration: 2031-12-07

Abstract

The utility model discloses a CAT1 network communication-based power consumption behavior monitoring system, which comprises a data acquisition module, a control module, a power supply module, a communication module, a state indication module and cloud middleware. The leakage current of the main circuit is collected through the zero sequence current sensor, and the current flowing in the main circuit is collected through the Hall current sensor. And collecting the voltage in the main circuit, and performing voltage reduction conditioning. Then, the power consumption information is input into the control module for sampling and filtering, then is uploaded to the cloud middleware through the communication module, and returns to the control module after the working state of the circuit and the type of the electric appliance are judged, and the control module drives the state indicating module to display the power consumption information of the circuit. This application carries out wireless communication based on CAT1, uses non-embedded sensor acquisition circuit information, has reduced the equipment and has arranged the cost.

Description

Power consumption behavior monitoring system based on CAT1 network communication

Technical Field

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

Background

The electronic communication technology develops rapidly, the living standard of residents improves, the types of electrical appliances used by residents are continuously increased, the circuit complexity of an electric power system is also improved, and the potential safety hazard of electricity utilization is increased.

The power consumption behavior monitoring system can monitor the power consumption condition of the electric appliance in an all-around manner, and report abnormal behaviors to the system or cut off a power supply in time when the abnormal behaviors are found, so that the life safety and property safety of people are protected. Along with the diversification of electric equipment, more and more scenes need to carry out power consumption behavior monitoring, such as base station operation condition monitoring, storage battery car charging monitoring and the like.

In view of the residential environment, most base stations or charging sheds are located at a distance from residential areas, and the network supply priority is relatively low. The existing power consumption behavior monitoring system mostly adopts a wired form in the aspect of communication, such as data transmission of Ethernet, RS485 and the like, so that the arrangement difficulty of the system is improved, and the maintenance cost is increased. Common low-power wireless communication modes, such as LORA and NBIOT, cannot be well applied to the power consumption monitoring system due to the narrow bandwidth.

Disclosure of Invention

Aiming at the defects of the prior art, the utility model provides the power consumption behavior monitoring system based on CAT1 network communication, data transmission is carried out through CAT1 network communication, the system is seamlessly accessed to the existing LTE network, and the use requirement of edge computing equipment can be met. In addition, a non-contact sensor is adopted for information acquisition, so that the cost of system arrangement is reduced, and the convenience and the product compatibility are improved.

The utility model provides an electricity consumption behavior monitoring system based on CAT1 network communication, includes data acquisition module, control module, power module, communication module, status indication module and high in the clouds middleware.

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

Preferably, the data acquisition module acquires the current of the main circuit by using a Hall sensor and acquires the voltage of the main circuit by using a voltage transformer.

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 and the working state of the electrical appliance in the main circuit according to the main circuit information output by the control module and returns the judgment result to the control module.

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

The power module is used for providing working voltage for the data acquisition module, the control module, the communication module, the relay module and the state indication module.

Preferably, the device further comprises a relay module. The relay module is used for receiving an instruction from the control module and cutting off the power supply of the main circuit.

The utility model has the following beneficial effects:

1. use non-invasive sensor to carry out information acquisition, realize the power consumption action control in resident's room or the canopy that charges, do not influence current circuit, it is convenient to use.

2. Based on wireless communication between CAT1 module realization control module and the high in the clouds middleware, not only can improve information transmission speed, can also direct access current LTE network, promote the equipment fixing compatibility, reduce installation cost.

Drawings

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

FIG. 2 is a schematic circuit diagram of an embodiment of a power module;

FIGS. 3(a) - (d) are schematic diagrams of a circuit of a data acquisition module in an embodiment, wherein FIG. 3(a) is current acquisition, FIG. 3(b) is leakage current acquisition, FIG. 3(c) is voltage acquisition, and FIG. 3(d) is temperature acquisition;

FIGS. 4(a) - (d) are schematic circuit diagrams of communication modules in an embodiment; wherein fig. 4(a) is a CAT1 communication module, fig. 4(b) is a communication module power circuit, fig. 4(c) is a signal transmission section, and fig. 4(d) is a communication module peripheral circuit;

FIG. 5 is a schematic circuit diagram of a control module in an embodiment;

FIG. 6 is a schematic circuit diagram of a status indication module in an embodiment;

fig. 7 is a schematic circuit diagram of a relay module in an embodiment.

Detailed Description

The utility model is further explained below with reference to the drawings;

as shown in fig. 1, an electricity consumption behavior monitoring system based on CAT1 network communication includes a data collection module, a control module, a power module, a communication module, a status indication module, and a cloud middleware.

The power module converts 5V input voltage into 3.3V, 2.5V and 1.8V through the voltage stabilizer and the voltage reference chip, further realizes the conversion of digital voltage and analog voltage through elements such as a resistor, a capacitor and an inductor, and provides stable working voltage and reference voltage for the data acquisition module, the control module, the communication module, the relay module and the state indication module.

As shown in fig. 2, the 5V to 3.3V power circuit includes a first light emitting diode LED1, fiftieth, fifty-eighth capacitors C57, C58, sixteenth, fifty-ninth capacitors C62, C59, a forty-ninth resistor R49, and a twelfth regulator U12; the first light-emitting diode LED1 is a light-emitting diode, the fifth seventeenth capacitor C57 capacitor C58 capacitor C is an electrolytic capacitor, and the twelfth voltage stabilizer U12 is AMS1117-3.3 in model number. An analog 5V voltage is input from pin 3 of the twelfth regulator U12, and after being stepped down, a digital 3.3V voltage is output from pin 2 of the twelfth regulator U12. Specifically, pin 3 of the twelfth voltage stabilizer is connected to the positive terminal of a fifty-seventh capacitor C57 and one end of a fifty-ninth capacitor C59; pin 1 is connected to one end of a sixty-second capacitor C62, the negative terminal of a fifty-seventh capacitor C57, the negative terminal of a fifty-eighth capacitor, the negative terminal of a first light emitting diode LED1, the other end of a fifty-ninth capacitor C59, and digitally; the 4 pin is connected with the other end of the sixty-two capacitor C62; pin 2 is connected to the positive terminal of a fifty-eighth capacitor C58 and to one terminal of a 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, and when the 2 nd pin of the twelfth regulator U12 can output a voltage normally, the first light-emitting diode LED1 lights up to indicate that the 5V to 3.3V power circuit is working normally. Digital 3.3V voltage is input to one end of the third inductor L3, two ends of the fifth twelve and fifty-three capacitors C52 and C53 are respectively connected with the analog ground and the other end of the third inductor L3, and the analog 3.3V voltage is obtained from the other end of the third inductor L3.

The 3.3V-to-1.8V power supply circuit comprises a sixty-three capacitor C63 and a thirteenth voltage stabilizer U13; the model of the thirteenth voltage stabilizer U13 is AMS1117-1.8, the digital 3.3V voltage output from pin 2 of the twelfth voltage stabilizer U12 is input to pin 3 of the thirteenth voltage stabilizer U13, and after voltage reduction, pin 2 of the thirteenth voltage stabilizer U13 outputs digital 1.8V voltage. Specifically, two ends of the sixty-three capacitor C63 are connected to pin 1 and pin 4 of the thirteenth voltage regulator U13, respectively. The thirteenth voltage stabilizer U13 has pin 4 connected to pin 2, and pin 2 outputs a digital 1.8V voltage. Digital 1.8V voltage is input to one end of the fourth inductor L4, two ends of sixty-first capacitors C60 and C61 are respectively connected with the analog ground and the other end of the fourth inductor L4, and analog 1.8V voltage is obtained from the other end of the fourth inductor L4.

The 2.5V reference voltage output circuit comprises a voltage reference chip U14 and four capacitors, wherein the model of the voltage reference chip U14 is REF3025, and a fifty-sixth capacitor C56 is an electrolytic capacitor; an analog 5V voltage is input to pin 1 of the voltage reference chip U14, and a 2.5V reference voltage is obtained 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 terminal of the fifty-sixth capacitor C56, pin 3 is connected to one end of the sixty-fourth capacitor, the other ends of the fifty-fourth and fifty-fifth capacitors C54 and C55, the negative terminal of the fifty-sixth capacitor C56 and the analog ground, and pin 2 is connected to the other end of the sixty-fourth capacitor C64. The 2.5V reference voltage output by the pin 2 is used in the information acquisition module as a reference signal for current zero-crossing detection and voltage division. The digital ground is connected to the analog ground via a second inductance L2.

The data acquisition module acquires main circuit current through the Hall sensor, acquires main circuit voltage through the voltage transformer, acquires main circuit leakage current through the zero sequence current sensor, and acquires main circuit temperature through the temperature sensitive resistor. The sensors collect data of the main circuit in a non-invasive mode, so that when the equipment is installed, the original circuit cannot be influenced.

As shown in fig. 3(a), the current collecting part comprises sensor collecting and operation processing, a main circuit live wire passes through an induction hole of the hall sensor, the output of the hall sensor is filtered, then is subjected to operation amplification, and then is transmitted to the control module. The model of the Hall sensor U9 is HCS-ES5-75A, and the operational processing part selects an operational amplifier with the model of OPA 2333A. Specifically, a pin 1 of the hall sensor U9 is connected to one end of a twenty-seventh capacitor C27, a twenty-eight capacitor C28 and an analog 5V voltage, and a pin 2 is connected to the other end of the twenty-seventh capacitor C27, the twenty-eight capacitor C28 and an analog ground; the 4 pins are connected with one ends of the forty-fourth and forty-fifth capacitors C44 and C45 and 2.5V voltage, and the other ends of the forty-fourth and forty-fifth capacitors C44 and C45 are connected to analog ground. The 3 pin of the hall sensor U9 outputs the detected main circuit current and is connected to the 5 pin of the tenth operational amplifier U10 through a thirty-eighth resistor R38 for amplification. The 5 th pin of the tenth operational amplifier U10 is connected to the analog ground through a nineteenth resistor R39, the 8 th pin is connected to the analog 3.3V voltage, and is connected to the analog ground through a twenty-sixth capacitor, and the operating voltage of the tenth operational amplifier U10 is provided; the pin 6 is connected with one end of a thirty-sixth resistor R36 and one end of a thirty-seventh resistor R37; the pin 7 is connected with one end of a forty-third capacitor C43, one end of a thirty-third resistor R33 and the other end of a thirty-sixth resistor R36. One end of the forty-sixth capacitor C46 is connected to the other end of the thirty-seventh resistor R37. A 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-second capacitors C46, C43 and C42 and the anode of the seventh diode D7 are connected to 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. The 3 rd pin of the tenth operational amplifier U10 is connected to the 7 th pin through a fifteenth resistor R35 for zero-crossing detection. The 2 feet of the tenth operational amplifier U10 are connected with one ends of thirty-first and thirty-second resistors R31 and R32, the other end of the thirty-first resistor R31 is connected with 2.5V voltage, the other end of the thirty-second resistor R32 is connected with analog ground, 2.5V reference voltage is divided by the thirty-first and thirty-second resistors R31 and R32, the voltage input to the 2 feet of the tenth operational amplifier U10 is 1.5V, and comparison signals are provided for zero-crossing detection. The 1 st pin of the tenth operational amplifier U10 outputs a zero-crossing detection result to the control module.

As shown in fig. 3(b), the leakage current collecting part also includes sensor collection and operational amplification, and the zero sequence current sensor collects the leakage current in the main circuit, and transmits the leakage current to the control module after amplification. Specifically, two ends of the twenty-fourth resistor R24 are connected to two legs of the zero-sequence current sensor P12, respectively. And a pin 2 of the zero-sequence current sensor is connected to the analog ground, and a pin 1 of the zero-sequence current sensor is connected to a pin 5 of an eighth operational amplifier U8 through a twenty-third resistor R23, so that the collected leakage current information is amplified. The eighth operational amplifier U8 has the model of OPA2333A, and pins 1, 2, 3 and 4 are connected to a simulation ground; the 8 pin is connected with analog 3.3V voltage and is connected to analog ground through a twenty-first capacitor C21 to provide stable voltage for the operation and amplification. The pin 6 of the eighth operational amplifier U8 is connected to analog ground through a twelfth resistor R22 and is connected to pin 7 through a first feedback resistor RF1 to form a feedback loop. The anode of the fifth diode D5 is connected to the 7 th pin of the eighth operational amplifier U8, the cathode of the fifth diode D5 is connected to one end of the twenty-second capacitor C22 and the twenty-first resistor R21, and the cathode of the fourth diode D4, and the other end of the twenty-second capacitor C22 and the twenty-first resistor R21, and the anode of the fourth diode D4 are connected to analog ground. The pin 7 of the eighth operational amplifier U8 outputs the amplified leakage current, and is connected to the control module through a fifth diode D5, where the fifth diode D5 is a rectifier diode with a model number of 1N4007, and the fourth diode D4 is a 3V zener diode with a model number of LM3Z3V0T 1G.

As shown in fig. 3(c), the voltage acquisition part acquires the voltage of the main circuit through a voltage transformer, and 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 conditioned by voltage reduction. Specifically, 2 of the voltage transformer T1 is connected to the neutral wire of the main circuit through a fourth twelve resistor R42, and 1 pin is connected to the live wire of the main circuit. The 4 pins are connected to analog ground, and the 3 pins output collected voltage signals. One end of a forty-ninth capacitor C49 is connected with the pin 3 of the voltage transformer T1, and the other end is connected with one ends of forty-first, forty-third and forty-fifth resistors R41, R43 and R45. The other end of the forty-first resistor R41 is connected to a voltage of 2.5V, and the other end of the forty-fifth resistor R45 is connected to analog ground. The other end of the forty-third resistor R43 is connected with the control module, and the circuit converts the mains voltage into a small alternating current signal smaller than 3V and transmits the small alternating current signal 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 analog ground.

As shown in fig. 3(d), the temperature acquisition part changes the resistance value of the temperature sensitive resistor according to the temperature of the main circuit through the temperature sensitive resistor with the model number of NCT3950, so that the output voltage changes, and the control module judges the temperature of the main circuit according to the voltage acquired and output by the temperature. Specifically, one end of the temperature-sensitive resistor NTC1 is connected with one end of the fifty-th capacitor C50 and the analog ground, and the other end is connected with the analog 3.3V voltage through the forty-th resistor R40 and is connected with the other end of the fifty-th capacitor C50, and outputs a voltage signal reflecting the temperature of the main circuit.

The communication module is based on CAT1 communication, realizes the wireless transmission between control module and the high in the clouds middleware, including CAT1 communication module, transmission antenna and surrounding circuit. CAT1 communication supports terminal downlink rates up to 10Mbps, enabling IoT devices to connect to LTE networks with lower power consumption and lower cost since the communication network belongs to the 4G network category. While CAT4 and higher versions of the solution support high rates, the cost price is typically relatively high for the internet of things industry, and the high integration of CAT1 provides the best cost-effectiveness for the customer. CAT1 has a more significant advantage in communication functionality compared to NB-IoT. NB-IoT is suitable for scenarios where only a small amount of data is transmitted and is in a fixed state. Typically water, electricity, gas meters. CAT1 not only can transmit larger data, but also has good mobility and voice functionality. As shown in fig. 4(a), the core of the communication module is a CAT1 communication chip U6 with model ML 302. As shown in fig. 4(b), pin 3 of the second voltage regulator U2 receives an analog 5V voltage, and after voltage reduction, pin 2 outputs a digital 3.8V voltage, and after capacitive filtering and inductive decoupling processing, a stable 3.8V operating voltage is provided for the CAT1 communication chip U6. A pin 3 of the second voltage stabilizer U2 is connected with the positive terminal of the second electrolytic capacitor CE2, and a pin 1 is connected with one ends of the first resistor R1 and the second resistor R2. The negative terminal of the second electrolytic capacitor CE2 and the other terminal of the second resistor R2 are both connected to digital ground. The other end of the first resistor R1 is connected to pin 2 of the second regulator U2. The anode of the third diode D3 is connected to pin 2 of the second regulator U2, and the cathode is connected to digital ground through a ninth resistor R9, which indicates whether the second regulator U2 successfully outputs 3.8V. The cathode of the voltage stabilizing diode DZ1, the anode of the first electrolytic capacitor CE1, one end of the first inductor L1 and one ends of the third, fourth and fifth capacitors C3, C4 and C5 are all connected with the 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 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 with the digital 3.8V voltage output by the first inductor L1; 1. pins 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, 168 are connected to digital ground; pin 2 is connected to the base of a second transistor Q2 through a sixth resistor R6, the emitter of the second transistor Q2 is connected to digital ground, the collector is connected to the cathode of a first diode D1, and the anode of the first diode D1 is connected to digital 3.3V through an eighth resistor R8. The pin 79 is connected with the base of the first triode Q1 through a fourth resistor R4, the emitter of the first triode Q1 is connected with the digital ground, the collector is connected with the cathode of the second diode D2, and the anode of the second diode D2 is connected with the digital 3.3V voltage through a fifth resistor R5. The first diode D1 is a communication module status indicator light, and emits light when the module is in a wake-up state; the second diode D2 is a networking indicator light, flashes slowly after the connection is successful, and flashes quickly when the connection is not connected to the network;

as shown in fig. 4(C), one end of each of the first and second capacitors C1 and C2 is connected to pin 36 of the CAT1 communication chip U6 and pin 1 of the USIM card U3, and the other end is connected to pin 4 of the USIM card U3 and digitally. 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 digital ground. One end of the seventh capacitor C7 is connected with pin 3 of the USIM card U3 and pin 35 of the CAT1 communication chip U6, and the other end is connected with digital ground. One end of the sixth capacitor C6 is connected with pin 6 of the USIM card U3 and pin 33 of the CAT1 communication chip U6, and the other end is connected with digital ground. One end of the third resistor R3 is connected with pin 3 of the ESD protection chip U1, and the other end is connected with pin 6 of the USIM card U3; the ESD protection chip U1 has a pin 1 floating, a pin 2 connected to digital ground, and pins 3, 4, 5, and 6 connected to

pins

1, 2, 6, and 3 of USIM card U3, respectively. The USIM card U3 provides flow for wireless communication, and the ESD protection chip U1 is used for protecting the communication module to work stably. The pin 47 of the CAT1 communication chip U6 is connected with the pin 3 of the antenna U4 through the seventh resistor R7, and sends the main circuit information sampled and calculated by the control module to the cloud middleware. One end of each of the thirteenth and fourteenth capacitors C13 and C14 is connected to two ends of the seventh resistor R7, and the other end is connected to digital ground. Both

legs

1, 2 of antenna U4 are connected to digital ground.

As shown in FIG. 4(d), the CAT1 communication chip U6 is debugged by the level shifting chip U5 with model number TXB0108 PWR. One end of a tenth resistor R10 is connected to pin 62 of the CAT1 communication chip U6, and the other end is connected to pin 10 of the level conversion chip U5; ninth and eleventh capacitors C9 and C11 have one end connected to pin 62 of CAT1 communication chip U6 and pin 2 of level conversion chip U5, and have the other end connected to digital ground; one end of each of the tenth capacitor C10 and the twelfth capacitor C12 is connected to the digital 3.3 voltage and the 19 pin of the level conversion chip U5, and the other end of each of the tenth capacitor C10 and the twelfth capacitor C12 is connected to the digital ground; pins 4, 5, 6 and 7 of the level conversion chip U5 are connected to

pins

4, 5, 30 and 29 of the CAT1 communication chip U6 respectively.

Pins

1, 3, 8, 9, 11, 12, 13, 18 and 20 of the level conversion chip U5 are suspended, and pins 14, 15, 16 and 17 of the level conversion chip U5 are used for debugging the CAT1 communication chip U6. The pin 16 of the CAT1 communication chip U6 is connected with the collector of the third transistor Q3 and is connected to the digital ground through a fifteenth capacitor C15, the emitter of the third transistor Q3 is connected to the digital ground, and the base is connected to the control module through an eleventh resistor R11; the pin 17 of the CAT1 communication chip U6 is connected to the collector of the fourth transistor Q4 and to digital ground through a sixteenth capacitor C16, the emitter of the fourth transistor Q4 is connected to digital ground, and the base is connected to the control module through a twelfth resistor R12. When the system is powered on and the network is initialized, the control module outputs high level and outputs low level after keeping 3S, so that the 17 th pin of the U6 is changed into high level after keeping 3S low level, and the module starts to work. And when the module is abnormal, repeating the operation twice to restart the equipment.

The control module samples and calculates the original data and outputs the current main circuit information. The core CPU of the control module selects a DSP chip U7 with the model number TMS320F 28335. As shown in fig. 5, the 169, 172, 173, and 174 pins of the DSP chip U7 are connected to the digital 3.3V voltage through one end of the thirteenth, fourteen, fifteen, and sixteen resistors R13, R14, R15, and R16, respectively; pin 142 is connected to a digital 3.3V voltage through an eighteenth resistor R18; 56. pins 55, 1 and 176 are respectively connected to the ground through seventeenth, eighteenth, twentieth and nineteenth capacitors C17, C18, C20 and C19; 81. pin 82 is connected through a twenty-third capacitor C23; 25. pin 26 is connected to digital 3.3V voltage through nineteenth and twentieth resistors R19 and R20 respectively; 84. pins 9, 71, 93, 107, 121, 143, 159, 170 are connected to a digital 3.3V voltage, pins 4, 15, 23, 29, 61, 101, 109, 117, 126, 139, 146, 154, 167 are connected to a digital 1.8V voltage, pins 31, 59 are connected to an analog 1.8V voltage, pins 34, 45 are connected to an analog 3.3V voltage, pins 32, 58, 33, 44 are connected to an analog ground, and pins 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 a digital ground; pin 42 receives current information of the main circuit, pin 39 receives leakage current information of the main circuit, pin 46 receives voltage information of the main circuit, and pin 49 receives temperature information of the main circuit; pins 5 and 6 are respectively connected to the bases of the third triode Q3 and the fourth triode Q4 through eleventh and twelfth resistors R11 and R12; a pin 68 of the DSP chip U7 receives the result of the zero-crossing detection, and a pin 104 is connected to one end of the first crystal oscillator Y1 and to digital ground through a twenty-four capacitor C24; pin 102 is connected to the other end of the first crystal oscillator Y1 and to digital ground through a twenty-fifth capacitor C25; the pin 80 is connected to a digital 3.3V voltage through a thirty-four resistor R34 and is connected to a digital ground through a forty-seven capacitor C47, two ends of a RESET key RESET1 are respectively connected to two ends of a forty-seventh capacitor C47, when the monitoring system runs abnormally, or needs to be upgraded and maintained, the RESET key is pressed down, and the control module RESETs all modules and restarts.

The cloud middleware judges the type and the working state of the electrical appliance in the main circuit according to the main circuit information output by the control module and returns the judgment result to the control module, and the control module drives the state indicating module to display the current main circuit information, the type and the working state of the electrical appliance. The state indicating module comprises an LCD screen, an LED display lamp and a buzzer. As shown in FIG. 6, pins 7, 10, 11, 12 and 13 of the DSP chip U7 are respectively connected with

pins

1, 2, 3, 4 and 5 of the LCD screen JP2, the content to be transmitted is transmitted to the LCD screen JP2, two ends of the key P9 are respectively connected with pin 179 and number of the DSP chip U7, the LCD screen JP2 is controlled to turn down, two ends of the key P10 are respectively connected with pin 1 and number of the DSP chip U7, and the LCD screen JP2 is controlled to turn up.

Pins

130, 131 and 132 of the DSP chip U7 are respectively connected to cathodes of red, blue and green diodes DR1, DB1 and DG1, anodes of the red, blue and green diodes DR1, DB1 and DG1 are respectively connected to digital 3.3V voltage through fifty-first, forty-eight and forty-six resistors R51, R48 and R46, wherein the green LED is a normal operation lamp which is long and bright when the system is not in danger and has no fault. The blue light is a network state indicator light, flickers when the network is connected, and lights up after the network is successfully connected. The red color is an abnormal alarm lamp, the lamp is on for faults, such as sensor faults and abnormal line temperature, and the lamp flickers to have dangerous information, such as dangerous electric appliances and electric arc dangers. The pin 133 of the DSP chip U7 is connected to the base of the sixth transistor Q6 through a fourth seventeenth resistor R47, and two ends of the fifty-th resistor R50 are connected to the base and the emitter of the sixth transistor Q6, respectively. The emitter of the sixth triode Q6 is connected to digital ground, the collector is connected with pin 2 of the buzzer B1, pin 1 of the buzzer B1 is connected with digital 3.3V voltage, when an electrical appliance violation occurs or an electric arc hazard occurs, the DSP outputs high level, the buzzer sounds, otherwise, the DSP outputs low level, and the buzzer does not sound.

As shown in fig. 7, the relay module receives a level signal from pin 89 of the DSP chip U7. One ends of twenty-fifth and twenty-sixth resistors R25 and R26 are connected to the pin 89 of the DSP chip U7, and the other ends are respectively connected to the base electrode and the emitter electrode of the fifth triode Q5. The emitter of the fifth transistor Q5 is connected to digital ground, the collector is connected to pin 2 of the relay M1 and to the anode of the sixth diode D6, and the cathode of the sixth diode D6 is connected to digital 5V voltage. The relay M1 has a pin 1 connected to the live wire and a pin 4 connected to the neutral wire of the main circuit through a fuse with the model number of 5 x 20/200 mA. When the middleware judges that dangerous power utilization behaviors exist, the middleware sends an instruction to the terminal, the control module outputs a high level to control the relay, the relay controls the alternating current contactor to cut off a power supply, when the resident confirms that dangerous conditions are eliminated, the middleware sends the instruction to the terminal, and the control module of the terminal outputs a low level to recover the power supply.

Claims

1. An electricity consumption behavior monitoring system based on CAT1 network communication is characterized in that: the system comprises a data acquisition module, a control module, a power module, a communication module, a state indication module and a cloud middleware;

the data acquisition module acquires original data of the main circuit through a non-contact sensor, wherein the original data comprises current, voltage and temperature;

the control module samples and calculates original data and outputs 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 and working state of an electric appliance in the main circuit according to the main circuit information output by the control module and returns a judgment result to the control module;

the state indicating module receives an instruction of the control module and displays current main circuit information, the type of the electric appliance and the working state of the electric appliance;

2. The system for monitoring the behavior of electricity consumption based on CAT1 network communication of claim 1, wherein: the data acquisition module acquires the current of the main circuit by using the Hall sensor and acquires the voltage of the main circuit by using the voltage transformer.

3. The system for monitoring the electricity consumption behavior based on CAT1 network communication of claim 1 or 2, wherein: the data acquisition module acquires current through the Hall sensor, acquires voltage through the voltage transformer, acquires leakage current through the zero sequence current sensor, and acquires temperature through the temperature sensitive resistor.

4. The system for monitoring the electricity consumption behavior based on CAT1 network communication of claim 3, wherein: the current and the leakage current collected by the data collection module are amplified and then input into the control module, and the collected voltage is subjected to voltage division and conditioning and then input into the control module.

5. The system for monitoring the behavior of electricity consumption based on CAT1 network communication of claim 1, wherein: the power supply module converts 5V input voltage into 2.5V reference voltage for the data acquisition module to perform current zero-crossing detection or voltage reduction.

6. The system for monitoring the behavior of electricity consumption based on CAT1 network communication of claim 1, wherein: also included is a relay module.

7. The power consumption behavior monitoring system based on CAT1 network communication as claimed in claim 1 or 6, wherein: the relay module receives an instruction from the control module through the triode, drives the relay with low current and controls the on-off of the main circuit power supply.

8. The system for monitoring the behavior of electricity consumption based on CAT1 network communication of claim 7, wherein: the relay is connected to the live wire of the main circuit through a fuse with the model number of 5 × 20/200 mA.

9. The system for monitoring the behavior of electricity consumption based on CAT1 network communication of claim 1, wherein: the state indicating module comprises an LCD screen, an LED indicating lamp and a buzzer.