According to the needs of the data collection system, the hydraulic oil pump monitoring device converts the temperature signal from the turbine flow sensor into an analog standard voltage signal through the signal conditioning circuit, and then after AD conversion, enters the input terminal of the single-chip microcomputer through the Bluetooth wireless transmission module or serial port Send to stand-alone monitoring subsystem (vehicle intelligent terminal) for further data analysis and processing. The stand-alone monitoring subsystem communicates all aspects of the vehicle to construction machinery operators through the alarm program and man-machine interface, and at the same time, it is sent to the on-site monitoring center through the Bluetooth wireless transmission module of the stand-alone monitoring subsystem. The I / O clock of the single chip microcomputer, the data input of the Suzhou vacuum pump, and the chip selection signal are provided by the P0.3, P0.2, P0.0 of the single chip microcomputer, and the conversion result is serially read out by the P0.1 port. The interface circuit between the single chip microcomputer and the Bluetooth module uses the STC89C52RC single chip microcomputer. The single chip microcomputer has a serial communication port and can directly communicate with it. However, because the signal level used by the single chip microcomputer is 5V, and the working voltage of the Bluetooth module is 3.3V, the vacuum electrode is therefore A voltage regulator circuit is designed, and a light-emitting diode is connected to the P101 pin at the same time, which is used to display the working status of the Bluetooth module. In addition, this design requires a USB communication interface to connect with the RS232 conversion chip. The whole program is mainly composed of two parts: login interface and real-time collection interface. When the entered user name and password are equal to the set values, click Confirm to log in, the program executes downward, enters the conditional structure, the system logs in successfully, and calls the acquisition program. Otherwise, the system cannot log in, and the login program is automatically closed. Without executing the program of the login interface, the real-time collection program cannot be executed, which greatly increases the security and confidentiality of the system. Control cable is a kind of cable. It is used for control and monitoring circuits and protection circuits with AC rated voltage of 450V/750V and below. Shielded control cables are widely used in power plants and power stations due to their good shielding performance. They are intended to be laid indoors, in cable trenches, in pipelines, directly buried, in shafts and other fixed places that can withstand greater mechanical tension. Copper Conductor PVC Jacket Control Cable,Armoured Control Cable,Multi Core Control Cable,Sheathed Control Cable Ruitian Cable CO.,LTD. , https://www.rtlinecable.com
Feature
1. DC rated current Uo/U is 450/750V
2. The maximum allowable long-term operating temperature of the cable electrical conductor is 70 ℃.
3 The working temperature during cable laying shall not be lower than 0 ℃. If the natural environment temperature is lower than 0 ℃, the cable shall be heated.
4 The strongly recommended allowable bending radius of cable is below:
The unarmoured cable shall not be less than 6 times of the cable diameter;
Armored cable or copper foil shielded cable shall not be less than 12 times of cable diameter;
The shielded Flexible Cable shall not be less than 6 times of the cable diameter.
5 Productive cable model 2-61 cores
6 Control cables are generally laid in rooms, cable trenches, pipelines and other fixed sites.
September 23, 2024