| 摘要 |
A microprocessor controlled system for monitoring, storing and periodically reporting on data pertinent to the commercial operation of a reporting system, such as a soft drink vending machine, to a central data collection and monitoring computer, and which periodically reports such data over a telephone line which it accesses on a nondedicated basis. The microprocessor controls operations of the telelink system, and stores in memory data related to the overall status of the commercial operation of the reporting system, such as totals, inventory, etc. Reporting system status sensors are provided for reporting on the status of the reporting system without interrupting normal operation thereof, such that a problem with the operation of or a malfunction of the telelink system does not adversely affect operation of the reporting system. Communication with the data collection processor system is provided by a telephone interface circuit which enables the microprocessor to periodically and on a nondedicated basis use an existing telephone line, which is otherwise used in normal service for telephones coupled thereto. A modem is also provided for enabling data messages to be transferred through the telephone interface circuit to the data collection system. |
