A platform for research: civil engineering, architecture and urbanism
A platform for research: civil engineering, architecture and urbanism
Hydraulic pressure detection circuit, hydraulic system and excavator
The invention relates to a pressure detection circuit, and provides a hydraulic pressure detection circuit, a hydraulic system and an excavator in order to solve the problem that a pressure transmitter used on an existing engineering machine occupies many pin interfaces of a controller, and the hydraulic pressure detection circuit comprises the controller and at least two pressure switches. The first end of a circuit formed by connecting the pressure switches in series is connected with the analog input pin of the controller, and the second end is connected with the positive electrode of the power supply; each pressure switch is connected with one resistor in parallel, and the resistance values of the resistors which are connected in series in any combination are different. One analog input pin of the controller is occupied, pressure monitoring of a plurality of pressure monitoring points can be achieved, and the number of occupied pins is small.
本发明涉及压力检测电路，为解决现有工程机械上使用的压力变送器占用控制器较多针脚接口的问题，本发明构造一种液压压力检测电路、液压系统、挖掘机，其中液压压力检测电路包括控制器、至少两个压力开关，各压力开关相互串联后形成电路的第一端与控制器的模拟量输入针脚连接，第二端与电源正极连接；每个压力开关与一个电阻并联，各所述电阻任意组合串联的阻值和各不相同。本发明占用控制器的一个模拟量输入针脚，可实现多个压力监测点的压力监测，占用针脚少。
Hydraulic pressure detection circuit, hydraulic system and excavator
The invention relates to a pressure detection circuit, and provides a hydraulic pressure detection circuit, a hydraulic system and an excavator in order to solve the problem that a pressure transmitter used on an existing engineering machine occupies many pin interfaces of a controller, and the hydraulic pressure detection circuit comprises the controller and at least two pressure switches. The first end of a circuit formed by connecting the pressure switches in series is connected with the analog input pin of the controller, and the second end is connected with the positive electrode of the power supply; each pressure switch is connected with one resistor in parallel, and the resistance values of the resistors which are connected in series in any combination are different. One analog input pin of the controller is occupied, pressure monitoring of a plurality of pressure monitoring points can be achieved, and the number of occupied pins is small.
本发明涉及压力检测电路，为解决现有工程机械上使用的压力变送器占用控制器较多针脚接口的问题，本发明构造一种液压压力检测电路、液压系统、挖掘机，其中液压压力检测电路包括控制器、至少两个压力开关，各压力开关相互串联后形成电路的第一端与控制器的模拟量输入针脚连接，第二端与电源正极连接；每个压力开关与一个电阻并联，各所述电阻任意组合串联的阻值和各不相同。本发明占用控制器的一个模拟量输入针脚，可实现多个压力监测点的压力监测，占用针脚少。
Hydraulic pressure detection circuit, hydraulic system and excavator
液压压力检测电路、液压系统、挖掘机
ZHOU LIANGFENG (author) / LUO CHENGFA (author) / YANG JUN (author) / HE BING (author) / LU DONGYAO (author) / HUANG ZUFU (author) / SONG JIASHU (author)
2023-06-23
Patent
Electronic Resource
Chinese
IPC:
E02F
Baggern
,
DREDGING
| European Patent Office | 2022
HYDRAULIC SYSTEM, HYDRAULIC EXCAVATOR, AND CONTROL METHOD FOR HYDRAULIC EXCAVATOR
| European Patent Office | 2023