Rope tension single-chip detection system
Pieces of structure. Reduce costs. 4.2 yards set an input interface circuit a 2O 4 - Bu + sv,. ,,. ● In order to adapt to different test conditions and environment, and various control needs. The pulp of the l2-chip system based encoder BCD code input devices, you can enter the number of l2 single-10 delivery system, used into the depth. . i ho amount of distance j mouth. Wire rope diameter d and number of other parameters. As this argument - once set will remain unchanged. Thus,
Beats By Dre Headphones, the encoder input easy and intuitive, reliable, and can also avoid misuse and keyboard adverse consequences. 12 BCD code encoder input interface schematic shown in Figure s. The circuit only by a single-ended 8-channel analog switches CD4051 and a latch 245 and lOkfb ~ 8-exclusion form. 12 DIP disc two is a group of six groups of 8421 by 245 parallel output connected to the data bus, each of the two connected on the control side A and were connected to 405l of CSo-~: CS, end. A,, C for the 4051 address strobe input terminal. 6 way to control the on-off lottery, according to London time-input encoder, each can enter two decimal numbers. The circuit design and more conventional. With a simple circuit structure, hardware chips less reliable features. 4.3 The system uses the printer interface circuit Tpup-16A-type panel-style mini-printers. The operator can enter the print command button control, measurement and print reports at any time. Print hunger interface circuit shown in Figure 6. m ¨ ¨ feeding n ¨ ¨ ¨ ● ¨ ¨ ¨ n 3 (Total No.70) Figure 5. Figure 6 printer data signal DB. A DB,, 373 received through the data bus 8031. y. 373 of the address strobe. Printer strobe input signal line 8031 STROBE bit lines connected P,. . BUSY status output line 8031 connected external towel off INTO (P3.2). To achieve with the interrupt management Tpap a 16A operation. 4.4U 'D display the system configuration 8-digit LED display. Using software decoding. Dynamic scanning display (circuit omitted). V used in the testing process to show the dynamic tension and displacement values, the data processing and calculations show the ugly tension and stiffness coefficient Q, hoe values. 4.5 output triac output opto-drive platform, the computer and disconnect AC power supply circuit of the direct link, in order to prevent interference with the signal to enter. 5 Software Overview. System software flow chart shown in Figure 7. The control system programming modular design approach. According to the control function of the system, the program is divided into the following modules: analog data acquisition module (including A / D conversion scale conversion etc.); BCD code encoder input module, data processing module; shows,
tods shoes outlet, printing module; control modules, including the achievement of quantitative digital switching signal acquisition, the output control information and other tasks. Strong function of the detection system requirements, and low cost. So we designed towel, to minimize the hardware overhead, full software functionality. The software process is characterized by all high-level language with assembly language and cross-compiled. For complex data processing and computing, high-level language programming is simple,
vibram five fingers outlet, and for input-output interface control,
herve leger sale, assembly language directly, fast response. Due to space limitations, no specific procedures in detail. A 21 ~ 1994No. 3 (Total No.70) ModemElectronicTechnique6 Conclusion The tension testing system in August 1988 technical appraisal by the Ministry of Coal. MCU 1992 plus change control system. To achieve automatic detection, display, print and so on. The instrument tests quickly. Does not affect the normal increase,
herve leger skirts, not detract from the rope. Rope length can be detected at any point on, not stay in place to enhance the impact of the container. Adapt to the largest rope by 56ram, measuring tension range O ~ 18tf. Maximum error OI3% ~ O. 8%. A 22 a reference I Shitian Sheng Figure 7. Shaft equipment and installation. Beijing: Coal Industry Press, l98l2 Liu Qixing. Ai 8I stable rope tension meter inspection. Well Construction Technology, 1988.43 He Limin. SCM application system design. Beijing: Beihang University Press, 1990. I4 Chen Yue elementary. Microcomputer application system design and practice. Beijing: Beihang University Press. 1991.105 Li Hua. MCS-51 series single-chip interface technology practical. Beijing: Beihang University Press, 1993.8
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