Power monitoring module with display unit for electrical power source device

• US 6,476,729 B1
• Filed: 08/22/2000
• Issued: 11/05/2002
• Est. Priority Date: 08/22/2000
• Status: Expired due to Fees

• Current Assignee: Daniel Liu
• Original Assignee: Daniel Liu
• Inventors: Liu, Daniel
• Primary Examiner(s): Edwards, Jr., Timothy
• Application Number:
  US09/642,839
• Time in Patent Office: 805 Days
• Field of Search: 340/870.11, 340/310.08, 340/656, 340/870.02
• US Class Current: 340/870.11
• CPC Class Codes: G01R 21/133 by using digital technique
• CPC Class Codes: G01R 31/42 AC power supplies

Abstract

A power monitoring module with a display unit configured to be mounted on an electrical power source device, such as uninterrupted power supply or a power strip, for indicating a plurality of electrical parameters is disclosed. The power monitoring module includes a casing provided with a central open area and a plurality of through holes thereon, and a printed circuit board are mounted to the casing. A control circuit is arranged on the printed circuit board and electrically coupled to the power source device for detecting the electrical parameters of the electric appliance plugged on the power source device. A plurality of operation keys are arranged on the printed circuit board, corresponding to the through holes formed on the casing. A display unit arranged on the printed circuit board, corresponding to the central open area of the casing for displaying at least one of the plurality of electrical parameters detected by the control circuit.

Claims

1. A power monitoring module mounted on an electrical power source device having at least one electrical socket coupled to a pair of power lines, said power monitoring module comprising:

a housing adapted for mounting in an opening formed in the electrical power source device;

at least one printed circuit board disposed in said housing;

a control circuit mounted on said at least one printed circuit board coupled to the pair of power lines, said control circuit including a processor for detecting a plurality of electrical parameters associated with a device plugged into the at least one electrical socket and an isolation switch having a control input coupled to an output of said processor, said isolation switch being coupled between the at least one electrical socket and the pair of power lines for cutting off current flow to the at least one electrical socket responsive to detection of a predetermined overload limit of one of said plurality of electrical parameters detected by said processor;

a plurality of operation keys mounted on said at least one printed circuit board and coupled to said processor, at least one of said plurality of operation keys being an overload limit setting key for setting said predetermined overload limit of one of said plurality of electrical parameters; and

,

a display unit mounted on said at least one printed circuit board and mounted to be visible through an opening formed through said housing for displaying at least one of said plurality of electrical parameters detected by said processor.

2. The power monitoring module as recited in claim 1, further comprising a second printed circuit board disposed in said housing and coupled to said at least one printed circuit board, said second printed circuit board providing coupling to the pair of power lines and the at least one electrical socket.