CN211696776U

CN211696776U - Performance unified and interchangeable digital sensor

Info

Publication number: CN211696776U
Application number: CN202020119668.9U
Authority: CN
Inventors: 张建辉; 翟小卫
Original assignee: Baoji Xingyuteng Measurement And Control Equipment Co ltd
Current assignee: Baoji Xingyuteng Measurement And Control Equipment Co ltd
Priority date: 2020-01-19
Filing date: 2020-01-19
Publication date: 2020-10-16
Anticipated expiration: 2030-01-19

Abstract

The digital sensor comprises a core body connecting base, wherein a pressure core body and an IC2862 circuit board are arranged in an inner cavity of the core body connecting base, and a locking ring for limiting the pressure core body and the IC2862 circuit board in the core body connecting base is fixed on an upper port of the core body connecting base; the pressure core body is electrically connected with an IC2862 circuit board, and the IC2862 circuit board passes through I²The C bus is electrically connected with an external MCU; the slice in the pressure core body generates piezoelectric impedance through external force and converts the change of the piezoelectric impedance into an output electric signal, the output electric signal formed by the pressure core body outputs a digital signal of a vertebral mark after being conditioned through an IC2862 circuit board, and the IC2862 circuitThe standard vertebra digital signal output by the plate passes through I²And the C bus is transmitted to an external MCU. The utility model discloses reduce the error of sensor output volume, improve unity and interchangeability between each sensor to reduction in production cost improves work efficiency.

Description

Performance unified and interchangeable digital sensor

Technical Field

The utility model belongs to the technical field of the sensor, concretely relates to unified and interchangeable type digital sensor of performance.

Background

The digital sensor is a sensor which outputs a signal as a digital quantity by adding or modifying an A/D conversion module to a traditional analog sensor. The traditional industrial digital sensor has some defects in the using process, the output quantity of the traditional digital sensor has errors, the performances of all the sensors are different, the debugging of the sensors is troublesome, the uniformity cannot be achieved, the development cost is increased, and the requirement of interchangeability among the sensors cannot be met. There is therefore a need for improvements.

SUMMERY OF THE UTILITY MODEL

The utility model provides a technical problem: the utility model provides a unified and interchangeable type digital sensor of performance, the utility model discloses a IC2862 circuit board is taked care of digital sensor signal, has integrateed the NSA2862 digital chip of taking care of in the IC2862 circuit board, and its sensitivity is high, and the calibration accuracy is high, and the integrated level is high, has ultralow energy consumption, reduces the error of sensor output quantity, improves unity and interchangeability between each sensor to reduction in production cost improves work efficiency.

The utility model adopts the technical proposal that: the digital sensor with uniform performance and interchangeable performance comprises a core body connecting base for integrally fixing the digital sensor on a pipeline, wherein a pressure core body and an IC2862 circuit board are arranged in an inner cavity of the core body connecting base, the IC2862 circuit board is arranged at the upper part of the pressure core body, and a locking ring for limiting the pressure core body and the IC2862 circuit board in the core body connecting base is fixed on an upper port of the core body connecting base; the pressure core body is electrically connected with an IC2862 circuit board, and the IC2862 circuit board passes through I²I of C bus and external MCU²C, electrically connecting the interfaces; the slice in the pressure core body generates piezoelectric impedance through external force and converts the change of the piezoelectric impedance into an output electric signal, and the output electric signal formed by the pressure core body is conditioned through an IC2862 circuit board and then output into a standard vertebraThe digital signal of the IC2862 circuit board outputs a standard vertebra digital signal through I²And the C bus is transmitted to an external MCU.

In a further limitation to the above technical solution, the IC2862 circuit board includes an NSA2862 digital conditioning chip, a core interface J2, an output interface J1, and a MOS transistor, wherein 3 pins of the MOS transistor are connected to a power supply interface VCC, and 1 pin and 2 pins of the MOS transistor output a 3.3V power supply to a V3.3 interface through a capacitor C1 and a transient suppression diode TV2 and are connected to an AVDD pin connected to the NSA2862 digital conditioning chip; the pressure core body interface is connected with a core interface J2 and inputs analog quantity to the pressure core body interface,

pins

1 and 2 of the core interface J2 are connected with pins VIP and VIN of an NSA2862 digital conditioning chip through a resistor R2 and a resistor R4, the resistor R2 and a resistor R4 are adjusted through a capacitor C6, the resistor R2 is connected with a ground wire of a capacitor C5, the resistor R4 is connected with the ground wire of the capacitor C7, pins 3 of the core interface J2 are connected with the ground wire of the resistor R3, and pins 4 of the core interface J2 are connected with pins IEXC1 and TEMP of the NSA2862 digital conditioning chip; the SDO pin, the OWI pin, the SDA pin and the SCL pin of the NSA2862 digital conditioning chip output standard IIC digital signals to an output interface J1, the VREFP pin of the NSA2862 digital conditioning chip passes through a capacitor C4 ground wire, the DVDD pin of the NSA2862 digital conditioning chip passes through a capacitor C2 ground wire, the DP pin of the NSA2862 digital conditioning chip is connected with a V3.3 interface through a resistor R1, and the DP pin of the NSA2862 digital conditioning chip passes through a resistor R5 ground wire.

Further inject above-mentioned technical scheme, the pressure core body bottom is filled up has the core blotter that prevents that instantaneous pressure from damaging the pressure core body when too big.

The technical scheme is further limited, and the outer wall of the core body connecting base is provided with connecting threads.

The utility model has the advantages compared with the prior art:

the scheme adopts the IC2862 circuit board to condition the digital sensor signal, and the integrated NSA2862 digital conditioning chip that has in the IC2862 circuit board to make digital sensor's sensitivity high, the calibration accuracy is high, and the integrated level is high, has ultralow energy consumption, reduces the error of sensor output quantity, has improved uniformity and interchangeability between the different sensors, thereby reduction in production cost improves work efficiency.

Drawings

Fig. 1 is a schematic structural view of the present invention;

FIG. 2 is a schematic view of the exploded structure of the present invention;

FIG. 3 is a schematic block diagram of the circuit of the present invention;

fig. 4 is a circuit diagram of the circuit board of the IC2862 of the present invention.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

In the present invention, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation. The use of the phrase "comprising one.. said element does not exclude the presence of other like elements in the process, method, article or apparatus that comprises the element.

Referring to fig. 1-4, embodiments of the present invention are detailed.

The digital sensor with uniform performance and interchangeable type is shown in figures 1 and 2 and comprises a core body connecting base 1 for integrally fixing the digital sensor on a pipeline, wherein the outer wall of the core body connecting base 1 is provided with connecting threads. The pressure core body 3 and the IC2862 circuit board 5 are arranged in the inner cavity of the core body connecting base 1, and the pressure core body is originallyThe bottom of the body 3 is padded with a core cushion 2 which prevents the pressure core body 3 from being damaged when the instantaneous pressure is too high. The IC2862 circuit board 5 is arranged on the upper part of the pressure core body 3, and a locking ring 4 which limits the pressure core body 3 and the IC2862 circuit board 5 in the core body connecting base 1 is fixed on the upper port of the core body connecting base 1. As shown in fig. 3, the pressure core body 3 is electrically connected to an IC2862 circuit board 5, and the IC2862 circuit board 5 is connected via an I²I of C bus 6 and external MCU²C, electrically connecting the interfaces; semiconductor deformation pressure is formed on the surface of the sheet in the pressure core body 3, the sheet is deformed by external force or pressure to generate piezoelectric impedance, so that the change of the piezoelectric impedance is converted into an output electric signal, the output electric signal formed by the pressure core body 3 is conditioned by the IC2862 circuit board 5 to output a digital signal of a vertebra mark, and the digital signal of the vertebra mark output by the IC2862 circuit board 5 is subjected to I²The C bus 6 is transmitted to the external MCU.

Specifically, as shown in fig. 4, the IC2862 circuit board 5 includes an NSA2862 digital conditioning chip 501, a core interface J2502, an output interface J1503, and a MOS 504, a 3 pin of the MOS 504 is connected to a power supply interface VCC, and a 1 pin and a2 pin of the MOS 504 output a 3.3V power supply to a V3.3 interface through a capacitor C1505 and a transient suppression diode TV 2506 and are connected to an AVDD pin connected to the NSA2862 digital conditioning chip 501; the pressure core body 3 interface is connected with a core interface J2502 and inputs analog quantity to the core interface J2502,

pins

1 and 2 of the core interface J2502 are connected with VIP and VIN pins of the NSA2862 digital conditioning chip 501 through a resistor R2507 and a resistor R4508, the resistor R2507 and the resistor R4508 are adjusted through a capacitor C6510, the resistor R2507 is connected with a ground wire through a capacitor C5512, the resistor R4508 is connected with a ground wire through a capacitor C7511, pins 3 of the core interface J2502 are connected with a ground wire through a resistor R3509, and pins 4 of the core interface J2502 are connected with IEXC1 pins and TEMP pins of the NSA2862 digital conditioning chip 501; the SDO pin, the OWI pin, the SDA pin, and the SCL pin of the NSA2862 digital conditioning chip 501 output a standard IIC digital signal to the output interface J1503, the VREFP pin of the NSA2862 digital conditioning chip 501 passes through a capacitor C4513 ground line, the DVDD pin of the NSA2862 digital conditioning chip 501 passes through a capacitor C2514 ground line, the DP pin of the NSA2862 digital conditioning chip 501 passes through a resistor R1515 to connect to the V3.3 interface, and the DP pin of the NSA2862 digital conditioning chip 501 passes through a resistor R5516 ground line.

The NSA2862 digital conditioning chip 51 in the digital sensor is provided for meeting the application of the Internet of things, is modified and upgraded on the basis of an industrial pressure sensor signal conditioning chip NSA (C)2860, and is particularly improved aiming at the requirement of ultra-low power consumption of the application of the Internet of things. The NSA2862 digital conditioning chip 51 integrates circuits such as a 24-bit main signal measuring channel, a 24-bit auxiliary temperature measuring channel, sensor calibration logic, a double-path constant current source and the like, and supports I²C. SPI or OWI output. Through the built-in MCU, NSA2862 supports the second-order temperature drift calibration of zero point and sensitivity of the sensor and the nonlinear calibration of the highest third order, the calibration precision can reach within 0.1%, and the calibration coefficient is stored in a group of EEPROMs. The power supply voltage of the NSA2862 digital conditioning chip 5 is 3V-5V, so that the power supply environment of a battery is met; the standby power consumption is lower than 100nA, the average power consumption is less than 200nA @1sample/min, the standby/awakening state switching and the data interruption are controlled by an external single chip, the low-power-consumption wireless sensor node has the characteristics of high precision, high integration degree and high flexibility while meeting the requirement of low power consumption, and can be matched with a low-power-consumption MCU and a wireless transceiver circuit to easily realize the ultra-low-power-consumption wireless sensor node. The sensor designed by the conditioning chip supports standby and dormancy awakening, has ultralow power consumption, can continuously work for 10 years without replacing batteries, and can be applied to the fields of smart cities and the like on a large scale.

The working principle of the digital sensor is as follows: when the pressure testing device is used, the digital sensor is firstly connected to a pipeline needing pressure testing through the core body connecting base 1, and then the pressure testing device can be used. When the pressure sensor is used, the on-off machine is not needed, the pressure signals of the digital sensor are collected and converted through the pressure core body 3, conditioned through the IC2862 circuit board 5 and then displayed on a display screen. The digital sensor has low power consumption according to the acquisition frequency, prolongs the service life of a battery, reduces the error of the output quantity of the sensor, and improves the uniformity and interchangeability among the sensors, thereby reducing the cost and improving the efficiency.

It is obvious to a person skilled in the art that the invention is not restricted to details of the above-described exemplary embodiments, but that it can be implemented in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.

Claims

1. Unified and interchangeable type digital sensor of performance, including core connection base (1) with digital sensor monolithic fixation on the pipeline, its characterized in that: a pressure core body (3) and an IC2862 circuit board (5) are arranged in the inner cavity of the core body connecting base (1), the IC2862 circuit board (5) is arranged at the upper part of the pressure core body (3), and a locking ring (4) for limiting the pressure core body (3) and the IC2862 circuit board (5) in the core body connecting base (1) is fixed on an upper port of the core body connecting base (1); the pressure core body (3) is electrically connected with an IC2862 circuit board (5), and the IC2862 circuit board (5) is connected with the IC2862 circuit board through I²I of C bus (6) and external MCU²C, electrically connecting the interfaces; the piezoelectric impedance is generated by the thin sheet in the pressure core body (3) through external force, the change of the piezoelectric impedance is converted into an output electric signal, the output electric signal formed by the pressure core body (3) is conditioned through the IC2862 circuit board (5) and then outputs a digital signal of a standard vertebra, and the digital signal of the standard vertebra output by the IC2862 circuit board (5) is subjected to I²And the C bus (6) is transmitted to an external MCU.

2. The performance unifying and interchangeable type digital sensor according to claim 1, wherein: the IC2862 circuit board (5) comprises an NSA2862 digital conditioning chip (501), a core interface J2(502), an output interface J1(503) and an MOS (504), wherein 3 pins of the MOS (504) are connected with a power supply interface VCC, and 1 pin and 2 pin of the MOS (504) output a 3.3V power supply to a V3.3 interface through a capacitor C1(505) and a transient suppression diode TV2(506) and are connected with an AVDD pin connected with the NSA2862 digital conditioning chip (501); the pressure core body (3) interface is connected with a core interface J2(502) and inputs analog quantity to the core interface J2, pins 1 and 2 of the core interface J2(502) are connected with VIP and VIN pins of an NSA2862 digital conditioning chip (501) through a resistor R2(507) and a resistor R4(508), the resistor R2(507) and a resistor R4(508) are adjusted through a capacitor C6(510), the resistor R2(507) is connected with a ground wire through a capacitor C5(512), the resistor R4(508) is connected with a ground wire through a capacitor C7(511), pin 3 of the core interface J2(502) is connected with a ground wire through a resistor R3(509), and pin 4 of the core interface J2(502) is connected with an IEXC1 pin and a TEMP pin of an NSA2862 digital conditioning chip (501); the SDO pin, the OWI pin, the SDA pin and the SCL pin of the NSA2862 digital conditioning chip (501) output standard IIC digital signals to an output interface J1(503), the VREFP pin of the NSA2862 digital conditioning chip (501) passes through a capacitor C4(513) ground wire, the DVDD pin of the NSA2862 digital conditioning chip (501) passes through a capacitor C2(514) ground wire, the DP pin of the NSA2862 digital conditioning chip (501) is connected with a V3.3 interface through a resistor R1(515), and the DP pin of the NSA2862 digital conditioning chip (501) passes through a resistor R5(516) ground wire.

3. The performance unifying and interchangeable type digital sensor according to claim 1, wherein: the bottom of the pressure core body (3) is padded with a core cushion pad (2) for preventing the pressure core body (3) from being damaged when the instantaneous pressure is too large.

4. The performance unifying and interchangeable type digital sensor according to claim 1, wherein: and the outer wall of the core body connecting base (1) is provided with connecting threads.