THIS SPEC IS OBSOLETE Spec No: 002-04742 Spec Title: AN204742 - F2MC-8FX Family, MB95200 Series Vacuum Cleaner Demo Replaced by: None AN204742 F2MC-8FX Family, MB95200 Series Vacuum Cleaner Demo This application note describes the functionality of MB95200 Series Vacuum Cleaner Demo. 1 Introduction The vacuum cleaner is widely used in family today. It can be distinguished in two kinds by the control way: mechanical and intelligent. The first kind is low-cost but it brings much disturbance to the power line which is not allowed in many areas of the world. The second kind can deal with the disturbance problem at a little higher cost and also has various functions. In the following part, we will introduce a low-cost, high-stability demo based on Cypress MB95F200 series MCU for vacuum cleaner. It supports the following features: Non-isolated powered by 220v using RC block Zero-cross and Frequency Detecting to power line A/D input for speed setup PWM to modulate SCR 2 Demo Platform 2.1 Platform This design has little components but it is of high quality. It is easy to connect and fix. The yellow wires are connected to the 220v AC. The blue wires are connected to the AC motor. User can change the speed by potentiometer. Please refer to the Figure 1. Figure 1. Vacuum Cleaner Demo www.cypress.com Document No. 002-04742 Rev.*A 1 F2MC-8FX Family, MB95200 Series Vacuum Cleaner Demo 2.2 Operation Notice Because the system is powered by 220v without any isolated part, before you operate the demo, please see the advice below: 3 1. DO NOT TOUCH THE DEMO WHEN IT WORKS! 2. When you debug the system, please use low AC power (12v-20v) supply which can avoid system failure. Function Figure 2 is the top view of a vacuum cleaner. The knob in the centre is connected to a potentiometer. Turning the knob can change the motor speed. When the prominence on the knob aims at the „MIN‟, the motor will run at a minimum speed; while when the prominence aims at the „MAX‟, the motor will run at maximum speed. Figure 2. Top View of Vacuum Cleaner www.cypress.com Document No. 002-04742 Rev.*A 2 F2MC-8FX Family, MB95200 Series Vacuum Cleaner Demo 4 Hardware In this system, transformer is not used to transform 220v AC to the MCU-acceptable voltage. The MCU is hanged on the power line in the way of floating GND. The RC block will reduce the current that going through the MCU system. D and D1 makes up the rectifier stage. The voltage between the Vss and Vcc of MCU is restrained to about 5V by D1. Two PWM output pins are connected to the gate of TRIAC to open the TRIAC at the zero-cross point. The two PWM have the same phase, duty and frequency. P12 is used for zero-cross detecting. Figure 3 shows the schematic diagram. Figure 3. Vacuum Cleaner Table 1 gives the MCU pin assignment. Table 1. MCU Pin Assignment Number Pin Direction Function 5 P04 INPUT A/D input 6,7 TO00/TO01 OUTPUT PWM output to SCR gate 8 P12/DBG INPUT/DUAL DIRECTION Zero-cross detecting/Debug port www.cypress.com Document No. 002-04742 Rev.*A 3 F2MC-8FX Family, MB95200 Series Vacuum Cleaner Demo 5 Firmware 5.1 Flow Chart To this system, the firmware implemented three main functions: get speed setup, detect the zero-cross point and adjust the trigger phase of the SCR. Speed setup is gotten by A/D input. The value of the A/D input will control the trigger phase of the SCR. Zero-cross point supplies a reference to the trigger point. Additionally, the frequency of the AC power is important to this design because many parameters are based on 50HZ AC power. Figure 4 gives the flow chart of the firmware. Figure 4. Flow Chart Start Initialize MCU Power Frequency = 50HZ? N Stop here Y Soft start to a certain speed Get A/D Adjust motor speed www.cypress.com Document No. 002-04742 Rev.*A 4 F2MC-8FX Family, MB95200 Series Vacuum Cleaner Demo 5.2 Project This demo uses MB95F212H to implement all the functions. MB2146-08-E and SOFTUNE V3 are used to debug the demo. The Project is shown in Figure 5. Figure 5. Project www.cypress.com Document No. 002-04742 Rev.*A 5 F2MC-8FX Family, MB95200 Series Vacuum Cleaner Demo 6 Document History 2 Document Title: AN204742 - F MC-8FX Family, MB95200 Series Vacuum Cleaner Demo Document Number: 002-04742 Revision ECN Orig. of Change Submission Date Description of Change ** - HUAL 11/04/2009 Initial release *A 5233350 HUAL 06/17/2016 Migrated Spansion Application Note MCU-AN- 500058-E-10 to Cypress format There is no web link for where/how to get the board and firmware mentioned in the document. So this AN is for obsolete. www.cypress.com Document No. 002-04742 Rev.*A 6 F2MC-8FX Family, MB95200 Series Vacuum Cleaner Demo Worldwide Sales and Design Support Cypress maintains a worldwide network of offices, solution centers, manufacturer‟s representatives, and distributors. To find the office closest to you, visit us at Cypress Locations. PSoC® Solutions Products ® ® ARM Cortex Microcontrollers cypress.com/arm PSoC 1 | PSoC 3 | PSoC 4 | PSoC 5LP Automotive cypress.com/automotive Cypress Developer Community Clocks & Buffers cypress.com/clocks Interface cypress.com/interface Lighting & Power Control cypress.com/powerpsoc Memory cypress.com/memory PSoC cypress.com/psoc Touch Sensing cypress.com/touch USB Controllers cypress.com/usb Wireless/RF cypress.com/wireless Forums | Projects | Videos | Blogs | Training | Components Technical Support cypress.com/support PSoC is a registered trademark and PSoC Creator is a trademark of Cypress Semiconductor Corporation. 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