Monitor, monitoring system, and damage evaluation system

A monitoring system, transmitting a monitoring signal which has identification information of a thermal battery from a monitor to a receiver receiving the monitoring signal, the monitor being attached to a monitoring target, using the thermal battery including a thermoelectric power generation element which outputs a voltage according to a temperature difference between a temperature of an atmosphere covering the monitoring target and a temperature of a contact part with the monitoring target as a sensor, and monitoring the monitoring target based on the voltage according to the temperature difference, the monitoring system comprising:

• the monitor which comprises a boost circuit including an input port which receives a voltage from the thermal battery, and an output port which outputs a boost voltage obtained by boosting a voltage input from the input port;
• an energy storage element connected to the output port of the boost circuit, and storing power supplied from the thermal battery as the sensor and boosted by the boost circuit;
• a voltage detection circuit detecting the boost voltage, and outputting a control signal which has signal levels respectively corresponding to a case where the boost voltage exceeds a predetermined voltage and a case where the boost voltage does not exceed the predetermined voltage from an output port;
• and a transmitter circuit connected to the output port of the boost circuit and an input port of the voltage detection circuit via a switch which is controlled to open and close based on the control signal.

A damage evaluation system, transmitting a monitoring signal which has identification information of a thermal battery from a monitor to an evaluator evaluating a damage condition of a monitoring target, the monitor being attached to the monitoring target, using the thermal battery including a thermoelectric power generation element which outputs a voltage according to a temperature difference between a temperature of an atmosphere covering the monitoring target and a temperature of a contact part with the monitoring target as a sensor, and monitoring the monitoring target based on the voltage according to the temperature difference, the damage evaluation system comprising:

• the monitor which comprises a boost circuit including an input port which receives a voltage from the thermal battery, and an output port which outputs a boost voltage obtained by boosting a voltage input from the input port;
• an energy storage element connected to the output port of the boost circuit, and storing power supplied from the thermal battery as the sensor and boosted by the boost circuit;
• a voltage detection circuit detecting the boost voltage, and outputting a control signal which has signal levels respectively corresponding to a case where the boost voltage exceeds a predetermined voltage and a case where the boost voltage does not exceed the predetermined voltage from an output port;
• and a transmitter circuit connected to the voltage detection circuit via a switch which is controlled to open and close based on the control signal, and transmitting to the evaluator evaluating the damage condition of the monitoring target based on the monitoring signal having the identification information of the thermal battery.