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Non-power wireless communication clamp AC ammeter
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An AC ammeter and wireless communication technology, applied in the field of clamp AC ammeter, can solve problems such as power failure, achieve the effects of improving safety and reliability, facilitating on-site installation and use, and improving safety and reliability
Active Publication Date: 2016-08-17
赵威
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Problems solved by technology
[0003] In order to solve the problem that the existing pincer ammeter needs to be powered off for a short time when installing the socket, and there are potential safety hazards, the present invention proposes a wireless communication pincer AC ammeter without power supply
Method used
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specific Embodiment approach 1
[0012] Specific implementation mode 1. Combination figure 1 Describe this embodiment, the wireless communication clamp AC ammeter without power supply described in this embodiment, it comprises ammeter housing 1, rectification and voltage stabilization circuit 2, clamp current sensor 3, power supply coil 5, wireless communication circuit 6, single-chip microcomputer circuit 7 and Signal shaping circuit 8;
[0013] The clamp current sensor 3 includes a measuring coil 4-1, an iron core 4-2 and a sheath 4-3;
[0014] The rectifying and stabilizing circuit 2, the wireless communication circuit 6, the single-chip microcomputer circuit 7 and the signal shaping circuit 8 are all placed in the ammeter shell 1,
[0015] The measurement coil 4-1 and the power supply coil 5 are all wound on the iron core 4-2, and the measurement coil 4-1, the power supply coil 5 and the iron core 4-2 are all placed in the sheath 4-3;
[0016] The current signal output end of the power supply coil 5 is ...
specific Embodiment approach 2
[0019] Embodiment 2. This embodiment is a further description of the non-power wireless communication clamp AC ammeter described in Embodiment 1. The number of turns of the measuring coil 4 is 1000 turns.
specific Embodiment approach 3
[0020] Embodiment 3. This embodiment is a further description of the non-power wireless communication clamp AC ammeter described in Embodiment 1 or Embodiment 2. The number of turns of the power supply coil 5 is 200 turns.
[0021] The clamp AC ammeter without power supply wireless communication in the utility model adds an independent power supply coil inside the clamp sensor, and calculates the number of turns and wire diameter of the power supply coil required by the circuit based on the clamp ammeter. The electric energy obtained by the power supply coil is converted into a DC power supply suitable for the normal operation of the ammeter measuring circuit through the rectifying and stabilizing circuit. The signal shaping circuit converts the signal induced by the measuring coil into a voltage signal that can be collected by the single-chip microcomputer. The signal is converted into a digital signal by the analog-to-digital converter on the single-chip microcomputer circuit...
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Abstract
The invention discloses a wireless communication clamp alternating current ammeter without a power supply, and relates to clamp alternating current ammeters. The ammeter solves the problem that when a socket is installed to the existing clamp ammeter, short-time outage is required, so that potential safety hazard exists. A measuring coil and a power supply coil are wound on an iron core; the measuring coil, the power supply coil and the iron core are arranged in sheaths; the current signal output terminal of the power supply coil is connected with the current signal input terminal of a rectifying and voltage-stabilizing circuit; the rectifying and voltage-stabilizing signal output terminal of the rectifying and voltage-stabilizing circuit is simultaneously connected with the power supply input terminal of a wireless communication circuit, a power signal input terminal of a single-chip microcomputer circuit and a power signal input terminal of a signal shaping circuit; clamp current signals collected by a clamp current sensor are input into the signal shaping circuit through the measuring coil; the signal output terminal of the signal shaping circuit is connected with the shaping signal input terminal of the single-chip microcomputer circuit; the wireless signal output terminal of the single-chip microcomputer circuit is connected with the signal input terminal of the wireless communication circuit. The ammeter is used for measuring clamping alternating current.
Description
technical field [0001] The invention relates to a pincer AC ammeter. Background technique [0002] The power supply mode of the existing clamp ammeter is battery power supply or switching power supply power supply. The battery-powered clamp ammeter is not suitable for long-term real-time measurement of the current value; the clamp-on ammeter powered by a switching power supply can measure the current value in real time for a long time, but in the measurement occasion without a single-phase AC power socket such as outdoors, it is necessary to measure Field installed electrical outlets. Doing this not only requires a short-term power outage when installing the socket, but also has certain potential safety hazards. Contents of the invention [0003] In order to solve the problem that the current pincer ammeter needs short-term power failure when installing a socket and has potential safety hazards, the present invention proposes a wireless communication pincer AC ammeter wi...
Claims
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