Serial transmission magnetic induction chip and position detection system

Abstract

The utility model discloses a serial transmission magnetic induction chip which comprises a serial signal shaping circuit, the output end of the serial signal shaping circuit is connected with the input end of a serial signal decoding circuit, and the output end of the serial signal decoding circuit is connected with the first input end of a serial signal coding circuit. The output end of the serial signal coding circuit is connected with the input end of a serial signal output circuit, and the output end of the Hall detection circuit is connected with the second input end of the serial signal coding circuit. The position detection system comprises a power supply module, the power supply module is connected with a control module, a Hall chip module and a display module, the control module is respectively connected with the Hall chip module and the display module, the Hall chip module is composed of a plurality of serial transmission magnetic induction chips, and the plurality of serial transmission magnetic induction chips are connected in series. According to the utility model, the circuit design difficulty of simultaneous detection of multiple positions can be effectively reduced.

Description

Technical Field

[0001] The utility model belongs to the technical field of serial transmission chips, relates to a serial transmission magnetic induction chip, and also relates to a position detection system. Background Art

[0002] Currently, there are many types of sensors used for position detection, which are widely used in electronic equipment, household appliances, medical equipment, transportation, industrial automation, automotive electronics and other fields.

[0003] Traditional position detection uses contact type, such as potentiometer sensor, where the brush moves on the surface of the resistor to convert the mechanical distance into resistance or voltage output. This method cannot detect high-speed moving objects, is prone to aging, causes poor contacts, and has high waterproofing costs. Therefore, non-contact measurement is one of the important development directions of current position detection technology, because non-contact measurement methods have the advantages of high speed and no contact with the object being measured. The Hall sensor chip is a sensor based on the Hall effect principle. As a type of non-contact position detection sensor, it can convert the change of the magnetic field into an electrical signal. Due to its small size, sensitivity, reliability, and low price, it has been widely used in various fields.

[0004] Existing Hall sensor chips are used in many scenarios for position detection. However, if signals from multiple positions need to be detected simultaneously, the supporting circuit design is complex, the circuit processing efficiency is low, the power consumption and cost are high, and the complex circuit design will also cause the entire circuit system to be unstable and have poor practicality. Utility Model Content

[0005] The utility model aims to provide a serial transmission magnetic induction chip, which solves the problem of complex matching circuit design when detecting multiple position signals simultaneously in the prior art.

[0006] Another object of the utility model is to provide a position detection system.

[0007] The technical scheme adopted by the utility model is a serial transmission magnetic induction chip, comprising a serial signal shaping circuit, the input end of the serial signal shaping circuit is connected to a data input pin IN, the output end of the serial signal shaping circuit is connected to the input end of a serial signal decoding circuit, the output end of the serial signal decoding circuit is connected to a first input end of a serial signal encoding circuit, the output end of the serial signal encoding circuit is connected to the input end of a serial signal output circuit, the output end of the serial signal output circuit is connected to a data output pin OUT, and also comprises a Hall detection circuit, the output end of the Hall detection circuit is connected to the second input end of the serial signal encoding circuit, and also comprises a power supply pin VCC and a ground pin GND.

[0008] The utility model is also characterized in that:

[0009] A clock control pin CLK is also included.

[0010] The Hall detection circuit uses a switch Hall sensing circuit.

[0011] The Hall detection circuit adopts a linear Hall sensing circuit.

[0012] Another technical solution adopted by the utility model is a position detection system, including a power module, the power module is connected to a control module, a Hall chip module and a display module, the control module is respectively connected to the Hall chip module and the display module, the Hall chip module is composed of multiple serial transmission magnetic induction chips, and the multiple serial transmission magnetic induction chips are connected in series.

[0013] Another technical solution of the utility model is also characterized in that:

[0014] It also includes an alarm module, which is connected to the power module and the control module respectively.

[0015] The beneficial effects of the utility model are:

[0016] The serial transmission magnetic induction chip and position detection system of the utility model adopts a data serial communication mode, and one chip carries multiple information at a time. Therefore, when detecting multiple position signals at the same time, multiple chips can be connected in series, which can effectively reduce the difficulty of circuit design for detecting multiple positions at the same time, and has a simple structure, stable and reliable, and low cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 This is a schematic diagram of the structure of the serial transmission magnetic induction chip of the utility model;

[0018] Figure 2 It is a structural schematic diagram of the position detection system of the utility model;

[0019] Figure 3 It is a structural schematic diagram of the Hall chip module in the position detection system of the utility model.

[0020] In the figure, 1. serial signal shaping circuit, 2. serial signal decoding circuit, 3. serial signal encoding circuit, 4. serial signal output circuit, 5. Hall detection circuit. DETAILED DESCRIPTION

[0021] The utility model is described in detail below with reference to the accompanying drawings and specific implementation modes.

[0022] The utility model serial transmission magnetic induction chip, such as Figure 1As shown, it includes a data input pin IN, the data input pin IN is connected to the input end of the serial signal shaping circuit 1, the output end of the serial signal shaping circuit 1 is connected to the input end of the serial signal decoding circuit 2, the output end of the serial signal decoding circuit 2 is connected to the first input end of the serial signal encoding circuit 3, the output end of the serial signal encoding circuit 3 is connected to the input end of the serial signal output circuit 4, the output end of the serial signal output circuit 4 is connected to the data output pin OUT, and also includes a Hall detection circuit 5, the output end of the Hall detection circuit 5 is connected to the second input end of the serial signal encoding circuit 3.

[0023] The serial signal shaping circuit 1 shapes the serial signal received from the outside to eliminate high-frequency noise; the serial signal decoding circuit 2 decodes the received shaping circuit signal; the Hall detection circuit 5 uses the Hall effect to convert the magnetic field received from the outside into a logic electrical signal; wherein, the Hall detection circuit 5 can use a switch Hall sensing circuit to output a single-bit logic signal, or a linear Hall sensing circuit to output an analog signal, and then an ADC can be used to convert the analog signal into a multi-bit logic signal; the serial signal encoding circuit 3 reorders and encodes the received logic electrical signal of the Hall detection circuit 5 and the signal transmitted by the serial signal decoding circuit 2; the serial signal output circuit 4 enhances the driving capability of the encoded circuit signal and then outputs it.

[0024] After being packaged, the serial transmission magnetic induction chip of the utility model comprises a data input pin IN, a data output pin OUT, a power pin VCC, a ground pin GND and a clock control pin CLK.

[0025] The utility model position detection system, such as Figure 2 As shown, it includes a power module, the power module is connected to a control module, a Hall chip module, a display module and an alarm module, and the control module is connected to the Hall chip module, the display module and the alarm module respectively. Figure 3 As shown, the Hall chip module includes multiple serial transmission magnetic induction chips, and the multiple serial transmission magnetic induction chips are connected in series for serial communication, that is, the data output pin OUT of the first serial transmission magnetic induction chip is connected to the data input pin IN of the second serial transmission magnetic induction chip, the data output pin OUT of the second serial transmission magnetic induction chip is connected to the data input pin IN of the third serial transmission magnetic induction chip, and so on, the data output pin OUT of the nth serial transmission magnetic induction chip is connected to the data input pin IN of the n+1th serial transmission magnetic induction chip.

[0026] The Hall chip module is the main circuit of the entire circuit and is mainly used to receive external magnetic field signals. The power module supplies power to the entire system. The control module is mainly used to send and receive signals and display the results in the display module, and then prompt according to the alarm module.

[0027] When the system is working, the control module sends a serial signal to the Hall chip module. At this time, the serial signal is a carrier. When the Hall chip module detects an external magnetic field signal and reaches the trigger point of the magnetic field parameter, it is defined as state a. When the Hall chip module detects an external magnetic field signal that has not reached the trigger point of the magnetic field parameter or there is no external magnetic field, it is defined as state b. The signal of state a or state b is fed back to the control module through the serial carrier sent by the control module. The control module outputs the result in the display module according to the detection result, and gives a prompt in the alarm module.

[0028] The utility model discloses a serial transmission magnetic induction chip and a position detection system. Through a data serial communication mode, a serial transmission magnetic induction chip carries multiple information at a time. Therefore, when detecting multiple position signals at the same time, multiple serial transmission magnetic induction chips can be connected in series, that is, the signal received on the first serial transmission magnetic induction chip will be sent to the second serial transmission magnetic induction chip. The second serial transmission magnetic induction chip receives the information of the first serial transmission magnetic induction chip, adds the information detected by the second serial transmission magnetic induction chip, and then transmits it to the third serial transmission magnetic induction chip. By analogy, when the information received by the nth serial transmission magnetic induction chip includes all the information in the above n-1 serial transmission magnetic induction chips, plus its own information, it is then transmitted to the control module for decoding and executing corresponding actions. The difficulty of supporting circuit design for simultaneous detection of multiple positions can be effectively solved. The structure is simple, stable and reliable, and the cost is low.

[0029] Example 1

[0030] The serial transmission magnetic induction chip includes a serial signal shaping circuit 1, the input end of the serial signal shaping circuit 1 is connected to a data input pin IN, the output end of the serial signal shaping circuit 1 is connected to the input end of a serial signal decoding circuit 2, the output end of the serial signal decoding circuit 2 is connected to a first input end of a serial signal encoding circuit 3, the output end of the serial signal encoding circuit 3 is connected to the input end of a serial signal output circuit 4, the output end of the serial signal output circuit 4 is connected to a data output pin OUT, and also includes a Hall detection circuit 5, the output end of the Hall detection circuit 5 is connected to the second input end of the serial signal encoding circuit 3, and also includes a power pin VCC and a ground pin GND.

[0031] Example 2

[0032] The serial transmission magnetic induction chip includes a serial signal shaping circuit 1, the input end of the serial signal shaping circuit 1 is connected to a data input pin IN, the output end of the serial signal shaping circuit 1 is connected to the input end of a serial signal decoding circuit 2, the output end of the serial signal decoding circuit 2 is connected to the first input end of a serial signal encoding circuit 3, the output end of the serial signal encoding circuit 3 is connected to the input end of a serial signal output circuit 4, the output end of the serial signal output circuit 4 is connected to a data output pin OUT, and also includes a Hall detection circuit 5, the output end of the Hall detection circuit 5 is connected to the second input end of the serial signal encoding circuit 3, and also includes a power pin VCC, a ground pin GND and a clock control pin CLK, and the Hall detection circuit 5 adopts a switch Hall induction circuit.

[0033] Example 3

[0034] The position detection system includes a power module, the power module is connected to a control module, a Hall chip module, a display module and an alarm module, the control module is respectively connected to the Hall chip module, the display module and the alarm module, the Hall chip module is composed of multiple serial transmission magnetic induction chips of Example 2, and the multiple serial transmission magnetic induction chips are connected in series; and also includes an alarm module, which is respectively connected to the power module and the control module.

Claims

1. Serial transmission magnetic induction chip, characterized in that: The invention comprises a serial signal shaping circuit (1), wherein the input end of the serial signal shaping circuit (1) is connected to a data input pin IN, the output end of the serial signal shaping circuit (1) is connected to the input end of a serial signal decoding circuit (2), the output end of the serial signal decoding circuit (2) is connected to a first input end of a serial signal encoding circuit (3), the output end of the serial signal encoding circuit (3) is connected to the input end of a serial signal output circuit (4), the output end of the serial signal output circuit (4) is connected to a data output pin OUT, a Hall detection circuit (5), the output end of the Hall detection circuit (5) is connected to the second input end of the serial signal encoding circuit (3), and a power supply pin VCC and a ground pin GND.

2. The serial transmission magnetic induction chip according to claim 1, characterized in that: A clock control pin CLK is also included.

3. The serial transmission magnetic induction chip according to claim 2, characterized in that: The Hall detection circuit (5) adopts a switch Hall induction circuit.

4. The serial transmission magnetic induction chip according to claim 2, characterized in that: The Hall detection circuit (5) adopts a linear Hall induction circuit.

5. A position detection system, characterized in that It includes a power module, which is connected to a control module, a Hall chip module and a display module. The control module is connected to the Hall chip module and the display module respectively. The Hall chip module is composed of a plurality of serial transmission magnetic induction chips as described in claim 3 or 4, and the plurality of serial transmission magnetic induction chips are connected in series.

6. The position detection system according to claim 5, characterized in that: It also includes an alarm module, which is connected to the power module and the control module respectively.

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