A circuit and method for realizing a combined connection of neutral wires or live wires using phase information of the neutral wires and the live wires are provided. The circuit includes a phase detection module. The phase detection module is connected to a power grid via the live wire VL and the neutral wire VN. The phase detection module includes a high-voltage phase detector, a first inverter and a second inverter. The output of the high-voltage phase detector is sequentially connected to the first inverter and the second inverter. The method includes: arranging nodes on the live wire VL and the neutral wire VN of the power grid, respectively; defining the nodes by determining a phase relationship that a high-voltage signal first appears on the live wire VL or the neutral wire VN; and connecting systems to be connected in parallel to the power grid through the nodes.

A device may include a wire interface (e.g., port), a detection circuit and a microcontroller. The detection circuit may include a resistor, a comparator, and wiring connecting the resistor to the wire interface and to a first input of the comparator. The microcontroller may provide a test signal to the resistor, and a threshold signal to a second input of the comparator. The test signal passes through the resistor and continues to the wire connector and the comparator first input with little to no change or attenuation when the wire interface is disconnected, but is attenuated when the wire interface is connected to a wire with capacitance charging and discharging based on the test signal. The comparator may compare the voltage of a resulting signal at the wire interface to the threshold signal voltage, and depending on the comparison may detect if a wire is connected to the wire interface.

A cooking apparatus and a controlling method, where the cooking apparatus includes a plurality of power input terminals, a plurality of heaters, a detection circuit connected to the power input terminals for detecting the phase of power input into the power input terminals, and a processor. The processor configured to identify a phase difference of input power based on an electronic signal of the power output from the detection circuit, and, based on the phase difference being within one of a plurality of threshold ranges, identify the voltage between live terminals among the plurality of power input terminals based on the phase difference of the power and control at least one heater among the plurality of heaters according to the identified voltage between the live terminals, and, based on the phase difference being outside the plurality of threshold ranges, stop the operation of the cooking apparatus.

A cooking apparatus and a controlling method, where the cooking apparatus includes a plurality of power input terminals, a plurality of heaters, a detection circuit connected to the power input terminals for detecting the phase of power input into the power input terminals, and a processor. The processor configured to identify a phase difference of input power based on an electronic signal of the power output from the detection circuit, and, based on the phase difference being within one of a plurality of threshold ranges, identify the voltage between live terminals among the plurality of power input terminals based on the phase difference of the power and control at least one heater among the plurality of heaters according to the identified voltage between the live terminals, and, based on the phase difference being outside the plurality of threshold ranges, stop the operation of the cooking apparatus.

Various embodiments disclosed herein relate to a building automation controller and related method and storage medium including a processor configured, through at least execution of a distributed computer program, to: receive sensor data generated by a sensor, wherein the sensor data is indicative of a state of a defined space, identify an action to be performed by a device to affect the state in accordance with an operating characteristic for the defined space, determine that the device is attached to a second controller of a plurality of additional controllers, and transmit to the second controller, an indication that the action is to be performed by the device, wherein: the distributed computer program is configured to be distributed among the processor and the plurality of additional controllers and, the processor is further configured to apportion work to be performed by the computer program between at least the additional controllers.

Various embodiments disclosed herein relate to a building automation controller and related method and storage medium including a processor configured, through at least execution of a distributed computer program, to: receive sensor data generated by a sensor, wherein the sensor data is indicative of a state of a defined space, identify an action to be performed by a device to affect the state in accordance with an operating characteristic for the defined space, determine that the device is attached to a second controller of a plurality of additional controllers, and transmit to the second controller, an indication that the action is to be performed by the device, wherein: the distributed computer program is configured to be distributed among the processor and the plurality of additional controllers and, the processor is further configured to apportion work to be performed by the computer program between at least the additional controllers.

A connection detection device and a connection detection method for detecting a connection state between a first connector and a second connector are provided. The first connector includes detection pins. The second connector includes loop pins corresponding to the detection pins. The connection detection device includes a bias voltage generator, a detection circuit, and a processor. The bias voltage generator applies a reference bias voltage to the detection pins. The detection circuit detects bias values on the detection pins. When each bias value is shifted to a first bias value based on a connection loop formed between the detection pins and the loop pins, the detection circuit provides a first detection signal. When at least one of the bias values is not shifted to the first bias value, the detection circuit provides a second detection signal. The processor provides an alarm signal in response to the second detection signal.

A connection detection device and a connection detection method for detecting a connection state between a first connector and a second connector are provided. The first connector includes detection pins. The second connector includes loop pins corresponding to the detection pins. The connection detection device includes a bias voltage generator, a detection circuit, and a processor. The bias voltage generator applies a reference bias voltage to the detection pins. The detection circuit detects bias values on the detection pins. When each bias value is shifted to a first bias value based on a connection loop formed between the detection pins and the loop pins, the detection circuit provides a first detection signal. When at least one of the bias values is not shifted to the first bias value, the detection circuit provides a second detection signal. The processor provides an alarm signal in response to the second detection signal.

Tools and techniques are described to automate line testing when wiring devices (such as equipment and sensors) to controllers. Controllers have access to databases of the devices that are controlled by them, including wiring diagrams and protocols, such that the controller can automatically check that each wire responds correctly to stimulus from the controller. After testing, a reporting device rapidly shows the results of the line testing.

Tools and techniques are described to automate line testing when wiring devices (such as equipment and sensors) to controllers. Controllers have access to databases of the devices that are controlled by them, including wiring diagrams and protocols, such that the controller can automatically check that each wire responds correctly to stimulus from the controller. After testing, a reporting device rapidly shows the results of the line testing.