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A position location device that is self powered and worn or carried by a child, pet, or a person with impaired senses such as sight or hearing. The device is a stand alone device, in that it is totally self contained and requires absolutely no external inputs of power or data. Because the device is

A position location device that is self powered and worn or carried by a child, pet, or a person with impaired senses such as sight or hearing. The device is a stand alone device, in that it is totally self contained and requires absolutely no external inputs of power or data. Because the device is a stand alone and not dependent on transmitted signals or radiated data, the unit is not susceptible to unwanted transient radiated noise interference or atmospheric noise phenomenon. After an adjustable preset time delay triggers a visual and audio alarm, a monitoring person can easily locate the impaired person before any potential danger occurs. A small child or a person with impaired senses carrying this device is allowed to walk or play freely. If the child or person with impaired senses walks off or gets lost, the device will automatically trigger at the preset time which will alert the monitoring person as to the location of the person.

대표청구항 ▼

A automatic timing circuit for a position locating device which comprising: a d.c. voltage source, having a positive and negative terminal; a first switch whereby said d.c. voltage source is connected and disconnected from said automatic timing circuit; a first resistor; a second resistor having an

A automatic timing circuit for a position locating device which comprising: a d.c. voltage source, having a positive and negative terminal; a first switch whereby said d.c. voltage source is connected and disconnected from said automatic timing circuit; a first resistor; a second resistor having an adjustment whereby said resistor can act as a potentiometer; a first capacitor; means for connecting said first resistor between said second resistor and the positive terminal of said d.c. voltage source; means for connecting said second resistor between said first resistor and said first capacitor; means for connecting said first capacitor between said second resistor and ground; a amplifier I.C. having connection terminals at two, three, four, six, and seven; a third resistor; a fourth resistor; a fifth resistor; means for connecting said third resistor between the positive terminal of said d.c. voltage source and said fourth resistor; means for connecting said fourth resistor between said third resistor and ground; means for connecting said amplifier I.C. terminal two at a junction between said third resistor and said fourth resistor; means for connecting said amplifier I.C. terminal three at a junction between said second resistor and said first capacitor; means for connecting said amplifier I.C. terminal three to the off side of said first switch; means for connecting said amplifier I.C. terminal four to ground; means for connecting said amplifier I.C. terminal seven to the positive terminal of said d.c. voltage source; a first transistor having a base, a collector and an emitter; a sixth resistor; means for connecting said fifth resistor between said amplifier I.C. terminal six and said first transistor base; means for connecting said first transistor collector to the positive terminal of said d.c. voltage source; means for connecting said sixth resistor between said first transistor emitter and ground; a timer I.C. having terminals at one, two, three, four, five, six, seven, and eight; a seventh resistor; a eighth resistor; a first diode; a second capacitor; a third capacitor; means for connecting said timer I.C. terminals four and eight between the junction of said first transistor emitter and sixth resistor; means for connecting said first end of said seventh resistor to timer I.C. terminals four and eight; means for connecting said second end of said seventh resistor to timer I.C. terminal seven; means for connecting said eighth resistor between timer I.C. terminals six and seven; means for connecting said first diode between timer I.C. terminals six and seven; means for connecting said second capacitor between ground and timer I.C. terminals two and six; means for connecting said third capacitor between ground and timer I.C. terminal five; means for connecting said timer I.C. terminal one to ground; a ninth resistor; a second transistor having a base, collector and emitter; at least one output light bulb; at least one output light bulb resistor for each said output light bulb; at least one audio generator; means for connecting said ninth resistor between said timer I.C. terminal three and said second transistor base; means for connecting each said output light bulb in series with each said output light bulb resistor between said second transistor emitter and ground; means for connecting each said audio generator between ground and second transistor emitter; at least one battery test light bulb; at least one battery test light bulb resistor for each battery test light bulb; a second switch; means for connecting said battery test light bulb in series with each said battery test light bulb resistor between said the first side of said second switch and ground; means for connecting said second side of said second switch to the positive terminal said first switch; means for connecting said first side of said second switch to said timer I.C. terminal three; said I.C\s, transistors, diode, resistors, capacitors having parameters selected so that, when said first switch is in the “on”position the charging circuit is pre-set by adjusting said second resistor for establishing a delay time before said audio generator and said first light bulb and said second light bulb are activated.