Distributed multi-channel heating pipe monitoring system and control method thereof
A technology of monitoring system and control method, which is applied in the direction of general control system, program control, comprehensive factory control, etc., can solve the problems of heating pipe monitoring system to be developed, large economic cost, lack of heating pipes, etc., to reduce the number of long cables, The effect of saving economic cost and saving hardware cost
Active Publication Date: 2016-11-16
BEIHANG UNIV
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Problems solved by technology
[0006] Current signal acquisition is usually realized by analog modules of industrial controllers such as AD acquisition boards or PLCs. However, such acquisition boards or modules on the market generally only have 16 AD channels at most, and the price is not low, such as Advantech’s AD The market price of the acquisition board PCI-1716 is about 5,000 yuan, and more than 50 such boards are needed to complete the heating tube monitoring of the whole set of equipment, which brings huge economic costs
[0007] It can be seen that there is currently a lack of mature solutions for monitoring the health status of heating tubes in superplastic forming equipment on the market, and a small and low-cost heating tube monitoring system needs to be developed
Method used
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[0025] The present invention will be described in further detail below.
[0026] figure 1 It is a schematic diagram of a mold heating plate, which includes a heating mold with a reference number 1, a heating plate with a reference number 2, a heating tube with a reference number 3, and a thermocouple with a reference number 4. The heating tube and thermocouple are embedded inside the heating plate, which are used to heat up and monitor the temperature of the heating plate (up to 1200 degrees Celsius). The mold is installed on the heating plate for shaping the metal to be molded.
[0027] The distributed super multi-channel heating tube monitoring system architecture is as follows: figure 2 shown.
[0028] The monitoring system includes a current transformer, which is a current collection element, which is worn on the heating tube control cable, collects the control current of the heating tube, and converts it into a weak current with a certain current transformation ratio....
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The invention relates to a distributed multi-channel heating pipe monitoring system and a control method thereof. The device comprises an upper computer, wherein the upper computer can realize display, alarm and emergency operation; and a plurality of monitoring boxes, wherein the monitoring boxes are arranged in an application site, and can realize signal acquisition, site selection and switching, and fault diagnosis. The plurality of monitoring boxes and the upper computer are connected to the same network through a switch, and realize data communication through a UDP. Each monitoring box internally comprises a distributed controller. The distributed controller sends the fault information to the upper computer through the UDP. The monitoring box is internally in a board card plug type design. Each monitoring box comprises a backboard and a plurality of acquisition daughter boards, wherein the daughter boards realize the functions of current / voltage conversion, signal conditioning and amplification and analog signal site selection and switching and the like. Each monitoring box has a multichannel simulation signal input port. Each monitoring box adopts an analog switch chip D7506 to realize orderly switching of the analog signals.
Description
technical field [0001] The invention belongs to the technical field of superplastic forming, and in particular relates to a super multi-channel heating tube working state monitoring system based on a distributed architecture, which is used for accurate temperature control of domestic large-scale superplastic forming equipment. Background technique [0002] High Mach number aircraft is currently the key development direction in the aviation field of various countries in the world. Its complex shape structure requires materials to meet the two properties of high temperature resistance and light weight. Generally, titanium alloy material Ti 2 AlNb. Complex components of such materials need to be realized by the superplastic forming process (SPF) in superplastic forming equipment. [0003] The temperature uniformity of the heating platform of superplastic forming equipment has an important influence on the performance of superplastic forming products such as titanium alloy. Th...
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Login to View More IPC IPC(8): G05B19/418
CPCG05B19/4186
Inventor 吴帅田若男李冰焦宗夏
Owner BEIHANG UNIV