Stepper motor automatic control multi-function rotary operation panel design
With the continuous development of analog technology, various simulators have been used in many fields of military and civilian use, and have played an important role in personnel training and prototype development, and have exerted significant economic and social benefits. In practice, since many sets of simulators are often developed for different models and equipments of the same series, resulting in high cost and low utilization of storage space. Developing a universal simulator for a specific field is a good idea to solve these problems. The necessity of the development of the universal simulator was analyzed from the aspects of equipment development, simulation training and personnel training, and the feasibility analysis was carried out. A universal search radar simulator and a satellite measurement and control universal simulator were designed.
In the design and development process of a general simulator for a certain type of ship electronic equipment, the author finds that the overall structure and appearance layout of the same series of different models are basically the same, the main difference is that the local operating components are different. In order to realize the generalization of the simulator, this paper designs and implements a multi-function rotary operation panel based on automatic control of stepper motor.
1 rotary operation panel hardware design
1.1 Composition
The rotary operation panel is composed of a component trihedron, a control board, a stepping motor assembly, a rotating body spindle, and a host computer. The control board sends a control command to the stepping motor assembly, and the stepping motor assembly drives the component trihedron to rotate the operation panel through the rotating body main shaft. The workflow is as follows:
(1) The host computer software issues a rotation switching command to the control board to send the step pulse signal and the direction level signal to the stepping motor component.
(2) After receiving the signal, the stepper motor assembly rotates the component trihedron to the appropriate position and ends the rotation operation.
(3) The user operates the components on the trihedron of the component, and the operation result is uploaded to the upper computer software, and the upper computer software performs corresponding processing.
1.2 component trihedron design
In a general simulator of a ship's electronic equipment, the component trihedron can realize three different types of interface layout structures (see Figure 1). The three faces of the component trihedron are denoted as A face, B face, and C face, respectively. The A surface component is five buttons; the B surface component is two indicator lights, one buzzer, one button and three knobs; the C surface component is four knobs.
The component signal on the component trihedron is led to the control board through the data line, and communication with the host computer is realized. In order to avoid the entanglement of the data line during the rotation process, one of the operation surfaces is selected as the reference operation surface, and the other two surfaces are operated by the reciprocating two-way rotation reset mode.
1.3 control panel design
The rotary panel control board consists of a main controller, a power supply circuit, a CAN communication circuit, a drive motor rotation circuit, and a component communication circuit (see Figure 2). The main controller receives the host computer command and rotates the component trihedron to the appropriate plane position. The power supply circuit converts 12V to 5V, and then converts the 5V voltage to 3.3V for supply to the main controller. The CAN communication circuit is mainly composed of a CAN bus interface and a CAN transceiver, and is connected to the host computer and receives CAN communication commands. The driving motor rotating circuit mainly completes sending the stepping pulse signal and the direction level signal to the motor, and drives the motor to rotate, so that the component trihedron is rotated. The component communication circuit realizes the communication between the components and the host computer.
The company focuses on the production of stage lighting motor and electronic lock motor.
