Patent Application
20200187371
This application claims priority to Taiwan Application Serial Number 107216625, filed Dec. 6, 2018 which is herein incorporated by reference in its entirety.
The present disclosure relates to a voltage sensor, more particular to a non-contact type voltage sensor.
A non-contact high-voltage sensor is one of the important tools to prevent a person from electric shock. A general user can couple a rod to support the non-contact high-voltage sensor such that the person can sense a position of a potentially high voltage source that is farther from the user.
A sensing head design of the conventional non-contact high voltage sensor has a limited angle or range of perception. If you want to increase the angle or range of perception, the design of the sensing head needs to increase its volume, but a larger volume of the sensing head is inconvenient to carry and use.
The present invention provides a non-contact high voltage sensor to deal with the needs of the prior art problems.
In one or more embodiments, a non-contact high voltage sensor includes a sensing head and a battery holder that are electrically coupled to each other. The sensing head includes a control circuit board, a metal sensing plate and an insulating housing, and the insulating housing encloses the control circuit board and the metal sensing plate. The control circuit board is electrically connected to the metal sensing plate to sense high voltages in a surrounding environment, and the metal sensing plate includes a central flat portion and an arc-shaped portion, and the arc-shaped portion is extending from a boundary of the central flat portion and bent towards the control circuit board.
In one or more embodiments, the central flat portion is a circular flat plate and in substantially parallel with the control circuit board.
In one or more embodiments, the arc-shaped portion is part of a spherical surface.
In one or more embodiments, the non-contact high voltage sensor further includes an electromagnetic shielding shell, which is at least partially between the metal sensing plate and the control circuit board, and the electromagnetic shielding shell is electrically connected to a negative electrode of the battery holder.
In one or more embodiments, the non-contact high voltage sensor further includes a securing portion coupled to a support rod, and the battery holder interconnects between the sensing head and the securing portion.
In one or more embodiments, the sensing head further includes a lighting device that is exposed through a cutout of the arc-shaped portion.
In one or more embodiments, the sensing head further includes a buzzer mounted on the control circuit board.
In one or more embodiments, the sensing head further includes a perceptual voltage regulator mounted on the control circuit board.
In one or more embodiments, the buzzer and the perceptual voltage regulator are located on a same side of the control circuit board.
In one or more embodiments, the battery holder includes a battery receiving cavity to load batteries.
In summary, the non-contact high voltage sensor disclosed herein has a metal sensing plate with an arc-shaped portion or as part of a sphere such that a sensing angle or range of the sensing head is improved, and the sensing sensitivity can be simultaneously improved. The electromagnetic shielding shell is electrically connected to a negative electrode of the battery holder to achieve the grounding effect that it can shield the control circuit board from electromagnetic interference of the metal sensing plate or external high voltage sources, and avoid high voltage associated damages.
It is to be understood that both the foregoing general description and the following detailed description are by examples, and are intended to provide further explanation of the invention as claimed.
The invention can be more fully understood by reading the following detailed description of the embodiment, with reference made to the accompanying drawings as follows:
Reference will now be made in detail to the present embodiments of the invention, examples of which are illustrated in the accompanying drawings. Wherever possible, the same reference numbers are used in the drawings and the description to refer to the same or like parts.
Reference is made to
Reference is made to
In this embodiment, the metal sensing plate 110 includes a central flat portion 110a and an arc-shaped portion 110b, and the arc-shaped portion 110b is extended from an outer, circumferential boundary of the central flat portion 110a and bent towards the control circuit board 114.
In this embodiment, the central flat portion 110a of the metal sensing plate 110 has an area smaller than an area of the control circuit board 114. In addition, the central flat portion 110a is a circular flat plate and in substantially parallel with the control circuit board 114, but not being limited thereto.
In this embodiment, the arc-shaped portion 110b of the metal sensing plate 110 is part of a spherical surface or part of a sphere. In other embodiments, the whole metal sensing plate may be part of a spherical surface or part of a sphere, i.e., the central flat portion is modified as part of a spherical surface or part of a sphere. Compared with a conventional purely-flat sensing plate, the sensing head 102 is designed to have an improved angle or range of perception by modifying the shape of its metal sensing plate 110, and the sensitivity of the metal sensing plate 110 can be simultaneously improved.
In this embodiment, the sensing head 102 further includes an electromagnetic shielding shell 116 that is wrapped around the control circuit board 114, and has at least a part, e.g., a top ceiling portion of the shielding shell 116, located between the metal sensing plate 110 and the control circuit board 114. The electromagnetic shielding shell 116 is electrically connected to a negative electrode 104b of the battery holder 104 to achieve a grounding purpose, i.e., being electrically connected to the negative electrode 104b of the battery holder 104 and a negative electrode of a battery contained inside via a conductive path 11, such that the electromagnetic shielding shell 116 may shield the control circuit board 114 from electromagnetic interference of the metal sensing plate 110 or external high voltage sources, and avoid high voltage associated damages.
In this embodiment, the sensing head 102 may further include a buzzer 118 mounted on a surface of the control circuit board 114. The buzzer 118 is used to sound an alarm when the sensing head 102 senses the presence of a high voltage.
In this embodiment, the sensing head 102 may further include a perceptual voltage regulator 120 mounted on a surface of the control circuit board 114. The perceptual voltage regulator 120 is used to adjust a threshold voltage of the sensing head 102 to sense a high voltage source, e.g., the buzzer sounds an alarm when the sensed voltage is greater than the threshold.
In this embodiment, the buzzer 118 and the perceptual voltage regulator 120 are located on a same side of the control circuit board 114, i.e., a lower side or surface of the control circuit board 114 away from the metal sensing plate 110 and is surrounded by the electromagnetic shielding shell 116. That is, the control circuit board 114 and components mounted thereon are surrounded by the electromagnetic shielding shell 116 and thus isolated from electromagnetic interference of the metal sensing plate 110 or external high voltage sources, and avoid high voltage associated damages.
In this embodiment, the sensing head 102 may further includes a lighting device 112 that is exposed through a cutout 110e of the arc-shaped portion 110b. The lighting device 112, e.g., a light emitting diode, is used to provide a desired illumination when detecting a high voltage.
In this embodiment, the battery holder 104 may further includes a battery receiving cavity 104a for loading batteries inside thereof. The battery holder 104 has a positive electrode 104c and a negative electrode 104b used to contact the positive and negative electrodes of the batteries such that the batteries can supply necessary electric power to the operating sensing head 102. In addition, the electromagnetic shielding shell 116 is electrically connected to the negative electrode 104b of the battery holder 104, i.e., via the conductive path 119, and thus electrically connected to the negative electrodes of the batteries loaded inside the battery holder 104, to achieve a grounding purpose.
In this embodiment, the central flat portion 110a of the metal sensing plate 110 has a screw hole 110c through which a screw may be used to fasten the insulating housing 108, but not being limited thereto. The arc-shaped portion 110b of the metal sensing plate 110 may further have cutouts (110d, 110e), wherein the cutouts 110d are used to provide assembly space, and the cutouts 110e are used for the lighting device 112 to be exposed.
Reference is made
In summary, the non-contact high voltage sensor disclosed herein has a metal sensing plate with an arc-shaped portion or as part of a sphere such that a sensing angle or range of the sensing head is improved, and the sensing sensitivity can be simultaneously improved. The electromagnetic shielding shell is electrically connected to a negative electrode of the battery holder to achieve the grounding effect that it can shield the control circuit board from electromagnetic interference of the metal sensing plate or external high voltage sources, and avoid high voltage associated damages.
Although the present invention has been described in considerable detail with reference to certain embodiments thereof, other embodiments are possible. Therefore, the spirit and scope of the appended claims should not be limited to the description of the embodiments contained herein.
It will be apparent to those skilled in the art that various modifications and variations can be made to the structure of the present invention without departing from the scope or spirit of the invention. In view of the foregoing, it is intended that the present invention cover modifications and variations of this invention provided they fall within the scope of the following claims.
| Number | Date | Country | Kind |
|---|---|---|---|
| 107216625 | Dec 2018 | TW | national |
