Circuit IO controller

Abstract

In order to solve the problems that a traditional controller is complex in loop, single in function and multiple in potential safety hazards, the invention provides a circuit IO controller which comprises a current transformer, a voltage transformer, an intelligent central control chip MCU and a circuit switch. The current transformer detects a real-time effective current value and a phase angle of the circuit, the voltage transformer detects a real-time effective voltage value and a voltage phase angle, and the intelligent central control chip MCU receives electric signals of the current transformer, the voltage transformer and the circuit switch and carries out data processing and switch control. The beneficial effects of the invention are that the zero-phase trigger relay switch is realized, the current impact is reduced, the arc discharge of the switch contact is reduced, the load current magnitude of the relay is increased, and the service life of the relay is prolonged; the real-time power consumption condition on the circuit branch is obtained; electric arc, overload and short circuit problems of the circuit can be early warned in real time through phase sequence distortion through phase angle change detection, and circuit potential safety hazard early warning sensitivity and response timeliness are improved; and the consumable loss life cycle is controlled.

Description

Technical Field

[0001] This invention relates to the technical field of circuit control, and more specifically to a circuit I / O controller. Background Technology

[0002] In recent years, with the growing awareness of energy conservation and emission reduction, improving electricity efficiency and reducing unnecessary energy waste have become important means for factories to reduce costs and increase efficiency. Existing circuit power consumption can only be read from the meter to determine the total power consumption, making it impossible to understand the power consumption of each branch circuit in detail, or to identify potential energy savings and key points of waste. Existing circuit on / off control systems mostly rely on manual operation of switch panels, and circuit safety is ensured by traditional overload protection devices such as air switches. When troubleshooting circuit faults, there is a lack of data on circuit power consumption and fault current and voltage. To address these shortcomings, the inventors of this invention, after extensive research and practice, have finally obtained the technical solution of this invention. Summary of the Invention

[0003] To address the above problems, the present invention provides a circuit I / O controller, which further includes a current transformer, a voltage transformer, an intelligent central control chip (MCU), and a circuit switch.

[0004] The current transformer detects the real-time effective value of the current and the current phase angle, and transmits the detection results to the intelligent central control chip MCU through an electrical signal.

[0005] The voltage transformer detects the real-time effective value of the phase voltage and the voltage phase angle of the incoming circuit, and transmits the detection results to the intelligent central control chip MCU through an electrical signal.

[0006] The intelligent central control chip (MCU) can receive electrical signals from current transformers, voltage transformers, and circuit switches, and perform data processing and switching control through a program.

[0007] The intelligent central control chip MCU

[0008] Real-time power is calculated using the formula power equals current multiplied by voltage, and the calculation results are transmitted to the host computer.

[0009] Active and reactive power are calculated using the phase difference angle between current and voltage, and the calculation results are transmitted to the host computer.

[0010] The system uses an integral method to measure four types of electrical energy: active energy, reactive energy, forward energy (i.e., power consumption), and reverse energy (i.e., power supply). The calculation results are then transmitted to a host computer.

[0011] By establishing a real-time current database, plotting current waveforms, detecting current waveform distortion, identifying arc discharge phenomena (arc pulling) in the circuit, and sending early warnings to the host computer,

[0012] By establishing a real-time current and voltage database, synthesized waveforms are plotted. Short circuits are detected by monitoring waveform distortion, the circuit is immediately disconnected, and a warning is sent to the host computer.

[0013] By detecting the difference between the current and the preset current value, it is determined whether the line is overloaded or short-circuited. If an overload or short circuit occurs, the circuit is immediately disconnected and a warning is sent to the host computer.

[0014] In this invention, the current transformer's detection of the zero-phase angle of the current enables the relay to control the switch to operate at a zero-phase angle, achieving zero-phase triggering of the relay switch. This reduces current surges, minimizes arcing at the switch contacts, and extends the relay's lifespan. Experiments show that the zero-phase angle switch response time compensation method in this invention controls the phase angle of the triggering relay switch within ±5 degrees of zero phase angle. Because the current surge when the zero-phase angle switch relay engages is small, the pollution to the power grid is minimal, and the relay's lifespan can be extended by 1-2 times.

[0015] By setting up current transformers and voltage transformers and performing aggregated calculations by the MCU chip, users can understand the real-time power consumption of the installed circuit branches, making it possible to manage the power consumption of individual devices.

[0016] Current transformers and voltage transformers can detect phase angle changes and provide real-time early warnings of arcing, overload, and short-circuit problems in the circuit through phase sequence distortion. Compared with traditional circuit breakers, the circuit safety early warning method using phase sequence distortion can: 1) warn of situations that traditional methods cannot warn of, such as discharge, overheating, and line damage caused by poor contact when there is no short circuit or overload; 2) when the circuit is short-circuited or overloaded, it can detect the overload or short circuit in advance through phase sequence changes before sparks or arcs are generated, and can cut off the power to the circuit breaker in advance. The power-off time is 100-200ms longer than that of traditional air circuit breakers, which greatly improves electrical safety and extends the service life of the circuit.

[0017] Preferably, the intelligent central control chip MCU can receive connection switch or disconnect switch signals transmitted from the host computer. When a disconnect switch signal is received, the intelligent central control chip MCU controls the circuit switch to disconnect the switch when the current transformer detects the most recent current zero phase angle through an electrical signal.

[0018] In the technical solution of this invention, the intelligent central control chip (MCU) also has the function of receiving signals from the host computer, enabling remote switching on / off. During remote start / stop, the circuit I / O controller in this solution still adopts the principle of switching when the current is at zero phase, constantly protecting the power lines through zero-phase-angle start / stop.

[0019] Preferably, the circuit switch is equipped with a switch engagement counter, which can count the number of times the switch engages and transmit the count to the intelligent central control chip MCU via an electrical signal. The intelligent central control chip MCU then transmits the data to the host computer.

[0020] The engagement counter allows users to monitor the equipment's usage status in real time and control the equipment's maintenance cycle.

[0021] Preferably, one or more current transformers are provided; one or more voltage transformers are provided.

[0022] Current transformers and voltage transformers can be installed on multiple branch lines to monitor the power consumption of each branch line, facilitating overall power control by the user.

[0023] Preferably, the controller is equipped with a current transformer on each branch circuit of the incoming line.

[0024] Installing current transformers on each branch can ensure electrical safety to the greatest extent and is the preferred method in actual production and daily life.

[0025] The beneficial effects of this invention are as follows:

[0026] 1) Achieve zero-phase triggering of relay switching, reduce current surge, reduce arc discharge at switch contacts, increase relay load current, and extend relay life;

[0027] 2) Obtaining real-time power consumption information on circuit branches makes it possible to manage the power consumption of sub-equipment;

[0028] 3) By detecting phase angle changes, it is possible to provide real-time early warning of arcing, overload, and short circuit problems in the circuit through phase sequence distortion, thereby improving the sensitivity and response time of circuit safety hazard warning and reducing line safety hazards;

[0029] 4) Manage the lifecycle of consumable losses. Attached Figure Description

[0030] Figure 1 This is a flowchart of the present invention. Detailed Implementation

[0031] To make the technical problems, technical solutions and advantages of the present invention clearer, a detailed description will be given below in conjunction with the accompanying drawings and specific embodiments.

[0032] like Figure 1As shown, an embodiment of the present invention provides a circuit I / O controller, which further includes a current transformer, a voltage transformer, an intelligent central control chip (MCU), and a circuit switch. The current transformer detects the real-time effective value of the current and the current phase angle of the circuit, and transmits the detection result to the intelligent central control chip (MCU) via an electrical signal. The voltage transformer detects the real-time effective value of the incoming phase voltage and the voltage phase angle, and transmits the detection result to the intelligent central control chip (MCU) via an electrical signal. The intelligent central control chip (MCU) can receive the electrical signals from the current transformer, the voltage transformer, and the circuit switch, and perform data processing and switch control through a program. The intelligent central control chip (MCU) calculates the real-time power using the formula power equals current multiplied by voltage, and transmits the calculation result to the host computer. It also calculates the active power and reactive power using the current-voltage phase difference angle, and transmits the calculation result to the host computer. The system transmits the calculation results to the host computer. It establishes a real-time current database, plots current waveforms, and sends an early warning to the host computer when waveform distortion is detected. It also disconnects the circuit via electrical signal control when the current transformer detects the most recent zero-phase angle of the current. Similarly, it establishes a real-time voltage database, plots voltage waveforms, and immediately disconnects the circuit and sends an early warning to the host computer when voltage distortion is detected. Furthermore, it determines whether the line is overloaded or short-circuited by detecting the difference between the current and a preset current value. Upon detecting an overload or short circuit, it immediately disconnects the circuit and sends an early warning to the host computer. Finally, the MCU disconnects the circuit via electrical signal control when the current transformer detects the most recent zero-phase angle of the current, after receiving a switching command.

[0033] In this embodiment, the current transformer's detection of the zero-phase angle of the current enables the relay to control the switch to operate when the voltage is at a zero-phase angle, achieving zero-phase triggering of the relay switch. This reduces current surges, minimizes arcing at the switch contacts, and extends the relay's lifespan. Experiments show that the zero-phase angle switch response time compensation method in this invention controls the phase angle of the triggering relay switch within ±5 degrees of zero phase angle. Because the current surge when the zero-phase angle switch relay engages is small, it causes less pollution to the power grid, and the relay's lifespan can be extended by 1-2 times.

[0034] By setting up current transformers and voltage transformers and performing aggregated calculations by the MCU chip, users can understand the real-time power consumption of the installed circuit branches, making it possible to manage the power consumption of individual devices.

[0035] Current transformers and voltage transformers can detect phase angle changes and provide real-time early warnings of arcing, overload, and short-circuit problems in the circuit through phase sequence distortion. Compared with traditional circuit breakers, the circuit safety early warning method using phase sequence distortion can: 1) warn of situations that traditional methods cannot warn of, such as discharge, overheating, and line damage caused by poor contact when there is no short circuit or overload; 2) when the circuit is short-circuited or overloaded, it can detect the overload or short circuit in advance through phase sequence changes before sparks or arcs are generated, and can cut off the power to the circuit breaker in advance. The power-off time is 100-200ms longer than that of traditional air circuit breakers, which greatly improves electrical safety and extends the service life of the circuit.

[0036] In this embodiment, the intelligent central control chip (MCU) also has the function of receiving signals from the host computer, enabling remote switching on and off. During remote start / stop, the circuit I / O controller in this solution still adopts the principle of switching when the current is at zero phase, constantly protecting the power lines through zero-phase-angle start / stop.

[0037] The pull-in counter in this embodiment allows users to monitor the device's usage in real time and control the device's maintenance cycle.

[0038] In this embodiment, current transformers and voltage transformers are installed on each branch return circuit. This arrangement can ensure electrical safety to the greatest extent and monitor the power consumption of each branch circuit in real time.

[0039] This technical solution can achieve the following beneficial effects:

[0040] 1. Control the connection and disconnection of the line via a local control panel or remote communication;

[0041] 2. Zero-phase triggering reduces the inrush current during switching contacts, extending the relay's service life;

[0042] 3. Collect and store power consumption data for each branch circuit, including current, voltage, power consumption, and power factor; storage cycle is 1 minute / time; historical data retention is 24 hours.

[0043] 4. The arcing discharge phenomenon of the phase distortion detection circuit for current and voltage is detected, and an early warning is sent to the host computer;

[0044] 5. A momentary short circuit in the phase distortion detection circuit for current and voltage can disconnect the secondary circuit and send an alarm to the host computer.

[0045] 6. Detect the change in current and compare it with the overload preset value to determine the overload signal. The secondary circuit can be cut off and an alarm can be sent to the host computer.

[0046] 7. Detect voltage changes, determine voltage dips and line voltage drops, and calculate line losses and line heating coefficients.

[0047] The above description represents the preferred embodiments of the present invention. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principles of the present invention, and these improvements and modifications should also be considered within the scope of protection of the present invention.

Claims

1. A circuit I / O controller, characterized in that: The controller also includes a current transformer, a voltage transformer, an intelligent central control chip (MCU), and circuit switches; The current transformer detects the real-time effective value of the current and the current phase angle, and transmits the detection results to the intelligent central control chip MCU through an electrical signal. The voltage transformer detects the real-time effective value of the phase voltage of the incoming line and the voltage phase angle, and transmits the detection results to the intelligent central control chip MCU through an electrical signal. The intelligent central control chip (MCU) can receive electrical signals from current transformers, voltage transformers, and circuit switches, and perform data processing and switching control through a program. The intelligent central control chip MCU (1) Calculate the real-time power using the formula power equals current multiplied by voltage, and transmit the calculation results to the host computer. (2) Calculate the active power and reactive power using the current-voltage phase difference angle, and transmit the calculation results to the host computer. (3) The four types of electrical energy are metered by integration: active energy, reactive energy, forward energy, and reverse energy. The calculation results are then transmitted to the host computer. (4) By establishing a real-time current database, plotting current waveforms, detecting distortion in the current waveform, determining arc discharge in the circuit, sending an early warning to the host computer, and controlling the circuit switch to disconnect the circuit via an electrical signal when the current transformer detects the most recent zero-phase angle of the current. (5) By establishing a real-time current and voltage database, synthesized waveforms are plotted. Short circuits are detected by detecting waveform distortion, the circuit is immediately disconnected, and a warning is sent to the host computer. (6) By detecting the difference between the current and the preset current value, determine whether the line is overloaded or short-circuited. If an overload or short circuit occurs, immediately disconnect the circuit and send an early warning to the host computer.

2. The circuit I / O controller as described in claim 1, characterized in that: The intelligent central control chip MCU can receive connection switch or disconnect switch signals transmitted from the host computer. When it receives a disconnect switch signal, the intelligent central control chip MCU controls the circuit switch to disconnect the switch when the current transformer detects the most recent current zero phase angle through electrical signals.

3. A circuit I / O controller as described in claim 1, characterized in that: The circuit switch is equipped with a switch engagement counter, which can count the number of times the switch engages and transmit the data to the intelligent central control chip MCU via an electrical signal. The intelligent central control chip MCU then transmits the data to the host computer.

4. A circuit I / O controller as described in claim 1, characterized in that: One or more current transformers are provided; one or more voltage transformers are provided.

5. A circuit I / O controller as described in claim 1, characterized in that: The controller is equipped with a current transformer on each branch circuit of the incoming line.

Images