Gravity sensing circuit

Abstract

The utility model discloses a gravity sensing circuit, which comprises a gravity sensing chip and a bus level driving circuit, the gravity sensing chip is connected with the bus level driving circuit, and the model of the gravity sensing chip is MXC6655. The circuit is simple in structure and low in design cost and use cost.

Description

Technical Field

[0001] The utility model relates to the technical field of gravity detection, in particular to a gravity sensing circuit. Background Art

[0002] With the improvement of living standards, computers have become an important tool for daily office and study, especially tablet computers, which are small and easy to carry and are deeply loved by the public. In order to achieve vertical and horizontal screen playback, tablet computers have built-in gravity detection, but traditional gravity detection circuits are complex and costly. Utility Model Content

[0003] In order to overcome the deficiencies of the prior art, the utility model aims to provide a gravity sensing circuit with a simple circuit structure.

[0004] The purpose of the utility model is achieved by the following technical solutions:

[0005] The utility model provides a gravity sensing circuit, comprising a gravity sensing chip and a bus level driving circuit. The gravity sensing chip is connected to the bus level driving circuit, and the model of the gravity sensing chip is MXC6655.

[0006] In the utility model, as an optional embodiment, the bus level driving circuit includes a first driving circuit and a second driving circuit, the first driving circuit includes a resistor RN26, a resistor RO248 and a field effect transistor QD19, one end of the resistor RN26 and the gate of the field effect transistor QD19 are connected to the second driving circuit, one end of the resistor RQ248 and the drain of the field effect transistor QD19 are connected to an external bus, the other end of the resistor RN26 and the source of the field effect transistor QD19 are connected to the gravity sensor chip, and the other end of the resistor RQ248 is connected to a DC current.

[0007] In the present utility model, as an optional embodiment, the second driving circuit includes a resistor RN25, a resistor RO247 and a field effect transistor QD18, one end of the resistor RN25 and the gate of the field effect transistor QD18 are connected to the gate of the field effect transistor QD19, one end of the resistor RQ247 and the drain of the field effect transistor QD18 are connected to an external bus, the other end of the resistor RN25 and the source of the field effect transistor QD18 are connected to the gravity sensor chip, and the other end of the resistor RQ247 is connected to a DC current.

[0008] In the present invention, as an optional embodiment, it also includes a resistor RN24 and a resistor RN23, one end of the resistor RN23 and one end of the resistor RN24 are both connected to the SDO pin of the gravity sensor chip, the other end of the resistor RN23 is grounded, and the other end of the resistor RN24 is connected to a DC current.

[0009] Compared with the prior art, the beneficial effects of the present invention are:

[0010] The gravity sensing circuit of the utility model comprises a gravity sensing chip and a bus level driving circuit. The model of the gravity sensing chip is MXC6655, and the circuit structure is simple, and the design cost and the use cost are low. BRIEF DESCRIPTION OF THE DRAWINGS

[0011] Figure 1 This is a schematic diagram of the circuit structure of the gravity sensor chip of the embodiment of the utility model;

[0012] Figure 2 This is a schematic diagram of the circuit structure of the first driving circuit of an embodiment of the utility model;

[0013] Figure 3 Schematic diagram of the circuit structure of the second driving circuit of the embodiment of the utility model. DETAILED DESCRIPTION

[0014] Below, in conjunction with the accompanying drawings and specific implementation methods, the utility model is further described. It should be noted that, under the premise of no conflict, the various embodiments described below or the various technical features can be arbitrarily combined to form a new embodiment. Except for special instructions, the materials and equipment used in this embodiment can be purchased from the market. Examples of the embodiments are shown in the accompanying drawings, in which the same or similar numbers throughout represent the same or similar elements or elements with the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present application, and cannot be understood as limiting the present application.

[0015] In the description of the present application, it should be understood that the terms "upper", "lower", "front", "back", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific position, be constructed and operated in a specific position, and therefore cannot be understood as a limitation on the present application. In the description of the present application, "plurality" means two or more, unless otherwise precisely and specifically specified.

[0016] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "connected", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, or it can be connected through an intermediary medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0017] The terms "first", "second", etc. in the specification and claims of this application and the above-mentioned drawings are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. In addition, the terms "including" and "having" and any variations thereof are intended to cover non-exclusive inclusions. For example, a process, method, system, product or device that includes a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or devices.

[0018] The embodiment of the present application provides a gravity sensing circuit including a gravity sensor chip and a bus level driving circuit. The model of the gravity sensor chip is MXC6655, which has a simple circuit structure and low design cost and use cost.

[0019] Please refer to Figure 1-3 As shown, a gravity sensing circuit provided in this embodiment includes a gravity sensor chip and a bus level driving circuit. The gravity sensor chip is connected to the bus level driving circuit, and the model of the gravity sensor chip is MXC6655. The third pin, the seventh pin, the tenth pin, and the eleventh pin of the gravity sensor chip in the embodiment are all power supply pins of the gravity sensor chip, and its second pin and the twelfth pin are data and clock pins of the bus. The embodiment drives the gravity sensor in coordination with the system through the bus.

[0020] Specifically, the bus level driving circuit includes a first driving circuit and a second driving circuit. The first driving circuit includes a resistor RN26, a resistor RO248 and a field effect transistor QD19. One end of the resistor RN26 and the gate of the field effect transistor QD19 are connected to the second driving circuit, one end of the resistor RQ248 and the drain of the field effect transistor QD19 are connected to an external bus, the other end of the resistor RN26 and the source of the field effect transistor QD19 are connected to the gravity sensor chip, and the other end of the resistor RQ248 is connected to a DC current.

[0021] The second driving circuit includes a resistor RN25, a resistor RO247 and a field effect transistor QD18, one end of the resistor RN25 and the gate of the field effect transistor QD18 are connected to the gate of the field effect transistor QD19, one end of the resistor RQ247 and the drain of the field effect transistor QD18 are connected to an external bus, the other end of the resistor RN25 and the source of the field effect transistor QD18 are connected to the gravity sensor chip, and the other end of the resistor RQ247 is connected to a DC current.

[0022] The embodiment further includes a resistor RN24 and a resistor RN23, one end of the resistor RN23 and one end of the resistor RN24 are both connected to the SDO pin of the gravity sensor chip, the other end of the resistor RN23 is grounded, and the other end of the resistor RN24 is connected to a DC current.

[0023] Although only certain components and embodiments of the present application have been illustrated and described, many modifications and changes may be conceived by those skilled in the art without actually departing from the scope and spirit of the claims, such as changes in the size, dimensions, structure, shape and proportion of the various elements, mounting arrangements, material usage, color, orientation, etc.

[0024] The above-mentioned implementation mode is only a preferred implementation mode of the embodiment of the utility model, and cannot be used to limit the scope of protection of the embodiment of the utility model. Any non-substantial changes and replacements made by technical personnel in this field on the basis of the embodiment of the utility model shall fall within the scope of protection required by the embodiment of the utility model.

Claims

1. A gravity sensing circuit, characterized in that: The invention comprises a gravity sensor chip and a bus level driving circuit, wherein the gravity sensor chip is connected to the bus level driving circuit, and the model of the gravity sensor chip is MXC6655; the bus level driving circuit comprises a first driving circuit and a second driving circuit, the first driving circuit comprises a resistor RN26, a resistor RO248 and a field effect transistor QD19, one end of the resistor RN26 and the gate of the field effect transistor QD19 are both connected to the second driving circuit, one end of the resistor RQ248 and the drain of the field effect transistor QD19 are both connected to the external bus, and the other end of the resistor RN26 and the gate of the field effect transistor QD19 are both connected to the external bus. The source of the field effect transistor QD19 is connected to the gravity sensor chip, and the other end of the resistor RQ248 is connected to a DC power supply; the second driving circuit includes a resistor RN25, a resistor RO247 and a field effect transistor QD18, one end of the resistor RN25 and the gate of the field effect transistor QD18 are connected to the gate of the field effect transistor QD19, one end of the resistor RQ247 and the drain of the field effect transistor QD18 are connected to an external bus, the other end of the resistor RN25 and the source of the field effect transistor QD18 are connected to the gravity sensor chip, and the other end of the resistor RQ247 is connected to a DC power supply.

2. The gravity sensing circuit according to claim 1, characterized in that: It also includes a resistor RN24 and a resistor RN23, one end of the resistor RN23 and one end of the resistor RN24 are both connected to the SDO pin of the gravity sensor chip, the other end of the resistor RN23 is grounded, and the other end of the resistor RN24 is connected to a DC current.

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