Buehler controller, German Buehler model, Buehler price

The Buehler controller uses a chip to process and control the switches at various positions in the LED lamp circuit. There are two types of controllers with different structures due to different design methods. A micro-operation refers to an operation that cannot be further decomposed; performing a micro-operation always requires a corresponding control signal (called a micro-operation control signal or micro-operation command). A digital computer can basically be divided into two parts: the control unit and the execution unit. The controller is the control unit, while the arithmetic logic unit, memory, and peripheral devices are the execution units relative to the controller. One connection between the control unit and the execution unit is through control lines. The control unit sends various control commands to the execution unit via control lines; these control commands are usually called micro-commands, and the operations performed by the execution unit after receiving the micro-commands are called micro-operations. Another connection between the control unit and the execution unit is feedback information. The execution unit reflects the operation status to the control unit via feedback lines, so that the control unit can issue new micro-commands based on the state of the execution unit; this is also called "status testing". Micro-operations are a set of basic operations in the execution unit.

Buehler controller classification

1) Non-networked door controller: a single unit manages one door. It cannot be controlled by computer software, nor can records be viewed; control is performed directly through the controller. Features include low price and simple installation and maintenance. However, records cannot be viewed. It is not suitable for locations with more than 50 people or with frequent personnel turnover (referring to frequent hiring and resignations), nor for projects with more than 5 doors. 2) Networked door controller: a type of access control that can communicate with a computer, managed directly using software, including card and event control. Benefits include convenient management, centralized control, record viewing, and analysis of records for other purposes. Features include higher price and increased difficulty in installation and maintenance, but simple training and the ability to provide value-added services such as attendance tracking. Suitable for projects with many people, high mobility, and many doors. 3) TCP/IP network door controller: also known as Ethernet networked access control, this is a networkable access control system that connects the computer and the controller via network cables. In addition to all the advantages of networked access control, it offers faster speed, simpler installation, greater networking capacity, and the ability to network across regions or cities. However, equipment prices are high, and computer networking knowledge is required. Suitable for installation in large projects, with many people, speed requirements, and cross-regional engineering.

Buehler controller structure

Instruction Register: A register used to hold the instruction currently being executed or about to be executed. The instruction contains an opcode that determines the operation type and an address that indicates the source or destination of the operand. Instruction length varies with different computers, and the length of the instruction register varies accordingly. All computer operations are performed after analyzing the instructions stored in the instruction register. The input end of the instruction register receives instructions from memory, and the output end of the instruction register is divided into two parts. The opcode part is sent to the decoding circuit for analysis to indicate what type of operation the instruction should perform; the address part is sent to the address adder to generate the effective address, which is then sent to memory as the address for fetching or storing data. Memory can refer to main memory, cache, or register stacks used to hold the instruction currently being executed. When executing an instruction, it is first fetched from memory into the data register (DR), and then transferred to IR. Instructions are divided into opcode and address code fields, composed of binary digits. To execute any given instruction, the opcode must be tested to identify the required operation. The instruction decoder performs this task. The output of the opcode field in the instruction register is the input to the instruction decoder. Once the opcode is decoded, it can send specific signals for specific operations to the operation controller. Program Counter: A counter that specifies the address of the next instruction to be executed in the program, also known as the instruction counter. It functions as both an instruction address register and a counter. When an instruction has been executed, the program counter, acting as the instruction address register, must have its content changed to the address of the next instruction, allowing the program to continue running.

Buehler controller applications

With the continuous improvement of medical equipment technology, microcontrollers have begun to be widely used in medical devices, mainly reflected in: First, intelligent monitoring of patients' physical characteristic data. Some medical devices can be installed on patients to collect their physical data and interact with backend control systems. If abnormalities in the patient's physical characteristics are detected, alarms are generated promptly. For example, some medical devices can monitor a patient's heart rate, pulse, blood pressure, etc., and promptly call doctors for treatment if abnormalities are found. Second, intelligent electronic devices are also used during surgical procedures. For example, some surgeries require entering the patient's body. Without open surgery, the surgical process can be completed by controlling intelligent devices, further reducing patient pain and improving recovery speed. Third, intelligent health checkup data analysis equipment. User health checkup data can be entered into the analysis equipment, and by comparing it with normal data, predictions and diagnoses of user diseases can be made promptly. With the continuous improvement of China's medical technology level, the application of microcontroller technology has become increasingly widespread, improving medical technology levels and better maintaining patient health.

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