Global positioning satellite (GPS) technology to various areas

Software reads the latitude and longitude data, analysis of the current position stop, determine whether the current location of the user to set peace in the region. Approach is based on the user settings determine the activities of the center latitude and longitude and latitude and longitude are calculated to maintain the current object can exceed the preset radius of peace activities. Discrimination based on the results set the appropriate flag.

2.2 GSM module, control and disposal of short audio
SCM can be controlled through the GSM module AT commands TC35i, TEXT and PDU used to send text messages form the form of text messaging code using TEXT simple, very easy to complete, but the defect does not support Chinese SMS; the PDU in the form not only support Chinese SMS, but also Send text messages in English.

The choice of two forms to the resolution by the AT + CMGF, when AT + CMGF = 0 PDU when the form, when the AT + CMGF = 1 when TEXT form, send SMS when the demand contains Chinese characters, the first set should be sent in the form for the PDU form, then converted to 16-bit character code to Unicode and then stop sending, but on the figures before the meeting in its ASCII 8-bit binary code 0, gather and send 16-bit. When the phone receives text messages, text messages received through the program determine whether there are Chinese characters, then what form to use the resolution to read text messages.

SCM primarily through two types of information transmitted GSM modules: one is to accept the user's settings and begged commands, and after disposal to give back; the other is when the MCU determine the object being to maintain a safe area and sent separately to the user tips and location information.

When the user receives the positioning message, they can certainly be maintaining the position of the object. Users through the smart phone and a computer check through Google Maps astronomical latitude and longitude data corresponding to th