PH value monitoring device and method based on CAN bus network gate

A CAN bus, measurement and control device technology, applied in the field of network-type intelligent parameter measurement and control devices, can solve problems such as the inability of enterprise information network to directly collect and monitor industrial production site data information, and the incompatibility of upper-layer protocol electrical interfaces, saving personnel training costs. , The effect of saving development cost and improving cost performance

Inactive Publication Date: 2008-09-24
JIANGSU UNIV
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Problems solved by technology

However, the CAN bus also has limitations. As the bottom network of the factory, the CAN bus is incompatible with Ethernet, whether it is the upper layer protocol or the electrical interface, thus separating the enterprise information network from the industrial f

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  • PH value monitoring device and method based on CAN bus network gate
  • PH value monitoring device and method based on CAN bus network gate
  • PH value monitoring device and method based on CAN bus network gate

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Embodiment Construction

[0019] like figure 1 As shown, the device is mainly composed of a monitoring computer 13, an embedded CAN bus gateway 12, an Ethernet communication interface 14, a CAN bus communication interface 10, and an RS-232 communication interface 15, and more than 15 intelligent pH measurement and control devices.

[0020] Each intelligent pH measurement and control device is composed of a pH value measurement and control sensor 1, a signal conditioning circuit 2, an integrated 12-bit analog-digital A / D conversion module 3 and a CAN bus microprocessor 6 connected in sequence. The sensor consists of a pH sensor, a temperature sensor, and the like. The microprocessor 6 is a SOC single-chip microcomputer C8051F040, which is an actuator composed of a solenoid valve 9. The solenoid valve 9 is connected to the microprocessor 6 through a 12-bit digital-to-analog D / A conversion module 8, and the microprocessor 6 is also connected to the display 4 and the keyboard. 7. The output of the micropr...

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Abstract

The invention discloses a pH value measurement and control device based on a CAN bus gateway and a measurement and control method thereof. A remote monitoring computer visits the embedded type Web server of an embedded type CAN bus gateway by IE browser; the embedded type CAN bus gateway visits the pH measurement and control device by a CAN bus and requests real time data detected by the pH measurement and control device; the requested data are returned and sent to the CAN bus gateway by the CAN bus and are transmitted to the IE browser of the remote monitoring computer so as to display through a Ethernet by the web page of the Web server of the embedded type CAN bus gateway; at the same time, the remote monitoring computer displays page by IE browser and sends a control instruction to the pH measurement and control device through an Ethernet communication port, the embedded type CAN bus gateway and the CAN bus in regular turn so as to control the action of an electromagnetic valve and adjust the pH value of a detecting object. A production field infranet and an enterprise information network are interconnected by the method, which can effectively improve production efficiency, intellectualized monitoring level and the network management level of the enterprise.

Description

technical field [0001] The invention relates to the field of automatic control, in particular to a network-type intelligent parameter measurement and control device that integrates pH value measurement control and communication functions by utilizing embedded system, electronics, control, computer, digital communication, and network technologies. The device is mainly used in biological fermentation engineering, water environment monitoring and aquaculture and other fields. Background technique [0002] Commonly used pH value measurement and control devices include pH value measurement and control sensors, signal conditioning circuits and analog-to-digital A / D conversion modules sequentially connected to the microprocessor, and solenoid valves are used as actuators to connect with the microprocessor through digital-to-analog D / A conversion modules , the microprocessor sends the pH value signal detected by the sensor to the solenoid valve output by the acid or alkali solution ...

Claims

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Application Information

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IPC IPC(8): G05D21/02C13D3/00C13B20/00
Inventor 刘星桥刘一颖程明慧秦云曾疏楠
Owner JIANGSU UNIV
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