Second, the scheme introduces ST's capacitive touch button program through a resistance and sensing electrode capacitance CX resistance network capacitance charge/discharge time to detect changes in capacitance caused by human touch. As shown in FIG. 1 , when a human hand presses, a capacitance CT is connected in parallel to the sensing electrode, which increases the capacitance on the sensing electrode. The time for the sensing electrode to charge and discharge increases, and the state of the key is detected. The sensing electrode can be directly drawn on the PCB board as a button, roller or slider application style, it can also be made into a spring component inserted on the PCB board, even if the insulating layer (glass, resin) will not detect its performance Affected.
Induction cookers use heating principles based on magnetic field induced currents to heat food. During heating, a strong magnetic field is generated by the coil under the panel. When the magnetic flux passes through the bottom of the pot made by the magnet, the pot cuts alternating magnetic lines of force to generate eddy currents at the bottom of the pot to rapidly heat the pot to heat the food. In this solution, a 44-pin STM8S105S4 is used as the master chip of the key display panel to control the scanning of 13 buttons, the display of 24 LEDs and a 4-bit digital tube, the communication between the I2C and the mainboard, and the convenience of leaving a SWIM interface. Engineers use debugging (Figure 2).
STM8S105S4 uses ST advanced STM8 core, with a 3-stage pipeline Harvard architecture, 3.0 ~ 5.5V operating voltage, internal 16MHz RC can provide MCU 16MHz operating frequency, providing low-power mode and peripheral clock off, a total of 34 I /O available. The STM8S105S4 has 2KB of RAM and 16KB of FLASH, as well as 1KB of EEPROM data memory up to 300,000 erase cycles.
Pet Tracker
Pet Tracker, using GPS/ Beidou Positioning and GSM/WCDMA network combined with real-time positioning and image transfer function (WCDMA). The product has the advantages of convenient use, high supervision efficiency, low maintenance cost, and safe and healthy pets, no electromagnetic radiation pollution, safe use and ect. Each device has an independent recognition of IMEI identification number, when the data upload background, the user with the APP client of the smart phone, can complete the positioning of the pet, track tracking, photo upload, etc.. Can be used in pet outdoor positioning and trajectory tracking, automatic access management, notification message, especially in lost pet increasingly serious today, pet safety management and real-time tracking demand more and more intense, the products with its excellent performance, high reliability and high price for pet lovers provides successful solutions.
Pet Tracker function
1 this product is built in GSM communication module to realize data exchange.
(2) the waterproof grade of the product reaches IP67 grade.
(3) with the camera function, to achieve the camera and position synthesis, automatic reporting location information
(5) real-time query location
(6) SOS emergency alarm
(7) electronic fence
(9): low voltage low voltage alarm will prompt charging, and upload information to the low voltage, charging
(10) a built-in accelerometer
(11): power monitoring information locator is uploaded
(13) button: button instructions can also be used to help the police
(14) ultra low power consumption, long standby time
(16) online platform synchronization tracking system
(17) support APP issued instructions
Characteristics of pet locator
1 power standards: working power for the micro watt level, standby power consumption 5mA
2 battery configuration: rechargeable lithium polymer battery, capacity 620mAh
3 packaging features: ABS engineering plastics, anti high strength drop and vibration, waterproof grade IP67. Anti tensile 30KG
4 environmental characteristics: the working temperature of 30 to 70 DEG C, working humidity is lower than 95%
5 size: 41 x 38 x 15mm, 100mm to 700mm adjustable straps
6 appearance part
(1) the positioning of the use of the pet harmless material, to ensure the safety of pets.
(2) the positioner with waterproof function, to meet the requirements of waterproof, dust, anti fall
- strap length not less than 16cm, the length can be adjusted between 16cm-22cm
The main module - width is less than 68mm
- wrist strap thickness not greater than 20mm
- part of the band width is less than 21mm
7 locator battery part
(1) waterproof pet locator magnetic interface charger, can easily take charge by.
(2) the battery weight is not more than 60g, the battery capacity is 620mAh, which is built in the locator.
(3) the battery can be repeated charging, charging time is not more than 1.5 hours.
(4) the longest battery standby time is not less than 7 days.
8 color: can be customized. Weight: 92g
9 reliable work: the product fully considered the lightning protection, waterproof, anti impact and other industrial environmental applications, production process in strict accordance with the ISO9001 quality standard for multi link quality inspection.
Working mode
For the initial use of the customer, just to buy a flow of SIM card, you can use this product.
1 routine monitoring function of the pet, with the aid of high precision GPS, LBS, WIFI positioning module, real-time monitoring, historical monitoring, active regional division, the warning function and camera upload function;
2 Pet locator supports GPS, base station, WIFI positioning mode, through the GPRS positioning and wear information to the server background, the device adopts the "active way" to work.
3 location information reported
Support receiving system command report (system issued a directive, pet locator immediately reporting position information), automatic timing report, report information to locate the out of the ordinary, equipment damage report etc. function, and dealing with abnormal situation of network state.
(2) position reporting frequency: the maximum frequency is not more than 3 minutes, the minimum frequency is not less than 1 hours once. Reported frequency can be set according to the requirements and intelligent adjustment.
(3) the base station LBS mode positioning accuracy is not more than 500 meters, WIFI and GPS joint positioning mode positioning accuracy is not more than 30
Pet Gps Tracker, Gps Tracker for Pet, Dog GPS Locator, GPS Pet Collar, GPS Pet Tracker, Pet Tracker Collar
Shenzhen Yixie Electronics Co.,Ltd. , http://www.aprsu.com