Field detection device, system and method for achieving no maintenance of gas density relay

A field detection device for achieving no maintenance of a gas density relay, the device comprising a temperature adjusting mechanism and an intelligent control unit, wherein the temperature adjusting mechanism is a temperature-adjustable adjusting mechanism provided outside or inside a housing of the detected gas density relay and configured to regulate temperature rise and fall of a temperature compensation element of the gas density relay to cause a contact action of the gas density relay;

• the intelligent control unit is connected to the temperature adjusting mechanism and used for receiving and/or calculating a gas density value when a contact of the gas density relay is in action;
• the temperature adjusting mechanism is a heating element;
• or
• the temperature adjusting mechanism includes a heating element, a heat insulation element, a temperature controller, a temperature detector, and a temperature adjusting mechanism outer shell;
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• the temperature adjusting mechanism includes a heating element and a temperature controller;
• or
• the temperature adjusting mechanism includes a heating element, a heating power regulator, and a temperature controller;
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• the temperature adjusting mechanism includes a heating element, a refrigeration element, a heating power regulator, and a temperature controller;
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• the temperature adjusting mechanism includes a heating element, a heating power regulator, and a thermostatic controller;
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• the temperature adjusting mechanism includes a heating element, a temperature controller, and a temperature detector;
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• the temperature adjusting mechanism is a heating element, and the heating element is provided near the temperature compensation element;
• or
• the temperature adjusting mechanism is a miniature constant temperature box;
• wherein the number of the heating element is at least one, and the heating element comprises one of a silicon rubber heater, a resistance wire, an electric heating tape, an electric heating rod, a hot gas fan, an infrared ray heating element, and a semiconductor;
• the temperature controller is connected to the heating element and used for controlling a heating temperature of the heating element, and the temperature controller comprises one of a PID controller, a controller combining PID and fuzzy control, an inverter controller, and a PLC controller.