CN218512239U - Resiliometer circuit based on grating displacement sensing technology - Google Patents

Abstract

The utility model discloses a resiliometer circuit based on grating displacement sensing technology, which comprises a power module, a main controller module, a debugging module, a sensor module, a wireless communication module and a serial port screen module; the power supply module is connected with and supplies power to the main controller module, the debugging module, the sensor module, the wireless communication module and the serial port screen module; the main controller module is also connected with the debugging module, the sensor module, the wireless communication module and the serial port screen module; the debugging module is only connected with the power supply module and the main controller module; the sensor module, the wireless communication module and the serial port screen module are only connected with the power supply module and the main controller module. The utility model discloses compare with traditional measuring method, grating displacement sensing technology can also possess higher durability when making digital display resiliometer have higher measurement accuracy. The rebound value can be measured and displayed in a sensor sensing mode, and the compressive strength is calculated through corresponding correction.

Description

Resiliometer circuit based on grating displacement sensing technology

Technical Field

The utility model relates to a compressive strength detection area of concrete, the more specifically resiliometer circuit based on grating displacement sensing technology that says so.

Background

In the field of concrete compressive strength detection, in engineering quality detection, the compressive strength of concrete is an important measurement index in building engineering. After the concrete of the engineering body is poured to form an entity, the quality of the concrete is required to be detected to ensure the engineering quality, and whether the strength grade of the design requirement is met or not is judged. Under the condition, the traditional detection method can damage the concrete member, so that the engineering quality is reduced, and some nondestructive detection methods, such as a rebound method, are more and more widely applied to engineering quality detection with the advantages of no damage, high efficiency, accurate and reliable result and low cost.

The resiliometer is still the main instrument for detecting the strength of concrete in modern building engineering. The rebound method is simple and convenient to operate, low in cost and capable of efficiently measuring the strength of the concrete member, the overall strength of the member can be comprehensively known by detecting different concrete partition positions, and the rebound method can be used for most of the concrete members without damaging the members, so that an effective measuring means is provided for quality detection of building engineering.

SUMMERY OF THE UTILITY MODEL

In order to overcome the above-mentioned defect of prior art, the utility model provides a resiliometer circuit based on grating displacement sensing technology.

In order to achieve the above object, the utility model provides a following technical scheme:

a resiliometer circuit based on a grating displacement sensing technology comprises a power supply module, a main controller module, a debugging module, a sensor module, a wireless communication module and a serial port screen module; the power supply module is connected with and supplies power to the main controller module, the debugging module, the sensor module, the wireless communication module and the serial port screen module; the main controller module is also connected with the debugging module, the sensor module, the wireless communication module and the serial port screen module; the debugging module is only connected with the power supply module and the main controller module; the sensor module, the wireless communication module and the serial port screen module are only connected with the power supply module and the main controller module.

The power supply module mainly provides electric power support for each module of the circuit and completes voltage conversion through two voltage stabilizing chips; the voltage of 6V provided by four alkaline batteries is reduced to 5V by a 7805 voltage stabilizing chip, 5V power supplies are provided for a wireless communication module, a sensor module and a serial port screen module, and the voltage of 5V is reduced to 3.3V by an AMS1117-3V3 voltage stabilizing chip, so that 3.3V power supplies are provided for a main controller module and a debugging module.

In order to reasonably supply power and improve the endurance capacity, the power supply is also provided with a power switch.

The main controller module adopts STM32f103c8t6, and its processor core highest frequency can reach 72MHz, possess 35 high-speed IO mouths, 4 counter interfaces, three USART and DMA channel, satisfies all control demands of this design.

The debugging module has the main function of reserving an interface for product development and debugging and product maintenance; the circuit design is mainly characterized in that a microUSB communication interface and a plurality of general I/O interfaces are reserved for development and debugging, and when the program is written and burned, a debugging module is required to be used for burning.

The sensor module is a part of the main controller sensing the outside; the sensor module mainly comprises two parts, namely a photoelectric module and a Hall module.

The photoelectric module is an implementation part of a grating displacement sensing technology and comprises a grating and a photoelectric switch circuit, wherein the photoelectric switch is an EE-SX673 type switch, is powered by a 5v power supply, and outputs a voltage signal by connecting an out pin with a pull-up resistor; two EE-SX673 photoelectric switches are matched with the grating to output pulse signals, the moving distance of the grating can be measured, and the rebound distance can be further obtained.

The Hall module has the main function of achieving the function of a switch, and the top of the bouncing rod is provided with a magnet which can generate a strength magnetic field; the Hall switch detects the magnetic field to judge whether the tapping rod rises to the top or not, and transmits the information to the control module.

The wireless communication module adopts HC-08 Bluetooth to achieve the function of wireless communication; and the ultra-long distance communication of 80 meters can be realized in an open environment.

The serial port screen interface is used for displaying the working state and the test result of the resiliometer in real time; the power-saving control circuit has lower power consumption, is easy to develop, has strong cruising ability and can operate after being electrified.

The utility model discloses a technological effect and advantage:

compared with the traditional measuring method, the grating displacement sensing technology enables the digital display resiliometer to have higher measuring precision and higher durability. The rebound value can be measured and displayed in a sensor sensing mode, and the compressive strength is calculated through corresponding correction.

Drawings

Fig. 1 is a circuit diagram of a power module provided by the present invention.

Fig. 2 is a circuit diagram of the main controller module provided by the present invention.

Fig. 3 is a circuit diagram of a microUSB provided by the present invention.

Fig. 4 is a circuit diagram of the photoelectric switch sensor module provided by the present invention.

Fig. 5 is a circuit diagram of the hall sensor module provided by the present invention.

Fig. 6 is a circuit diagram of a wireless communication module according to the present invention.

Fig. 7 is a circuit diagram of the serial port screen module provided by the utility model.

Fig. 8 is a block diagram of the present invention.

Detailed Description

It should be noted that the embodiments and features of the embodiments of the present invention may be combined with each other without conflict. The present invention will be described in detail below with reference to the accompanying drawings in conjunction with embodiments.

In order to make the technical solutions of the present invention better understood by those skilled in the art, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the 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 efforts shall belong to the protection scope of the present invention.

It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used may be interchanged under appropriate circumstances for purposes of describing the embodiments of the invention herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.

In this embodiment, a resiliometer circuit based on grating displacement sensing technology is provided. As shown in fig. 8, the device includes a power module, a main controller module, a debugging module, a sensor module, a wireless communication module, and a serial port screen module. The power module is connected with the main controller module, the debugging module, the sensor module, the wireless communication module and the serial port screen module. The main controller module is connected with the power supply module, and is also connected with the debugging module, the sensor module, the wireless communication module and the serial port screen module. The debugging module is only connected with the power module and the main controller module. The sensor module, the wireless communication module and the serial port screen module are only connected with the power supply module and the main controller module.

Further, fig. 1 is a power module of a circuit of a grating displacement sensor, as shown in fig. 1, the circuit includes: the LED comprises an lm7805 chip and an AMS1117-3V3 chip, wherein four alkaline batteries are connected in series, the anode of each alkaline battery is connected with a VIN pin of the lm7805 and then is connected with the cathode of the corresponding capacitor of 100nF, the output VOUT pin of the lm7805 is 5V voltage, the output VOUT pin of the lm7805 is grounded through two capacitors of 100uF and 100nF, the output VOUT pin of the ASM1117-3V3 is connected with the VIN pin of the ASM1117-3V3, 3.3V voltage is output through the Vout pin of the ASM1117-3V3, power is supplied to a device needing 3.3V voltage, the output end of the device is also connected with the ground through a capacitor, and a resistance of 470 ohms is connected with the LED1 to serve as a power indicator lamp.

Further, fig. 2 is a main controller module of a circuit of the grating displacement sensor. The model of the main controller is STM32F103C8, and is supplied by the output of the Vout pin of the ASM1117-3V3, and the 5 pin and the 6 pin of the STM32F103C8 are connected with a 12MHz crystal oscillator X1, and two 22pF capacitors are connected in parallel to be grounded, so that the clock of the main controller is provided by the crystal oscillator. The 11 pin of STM32F103C8 is connected with the pin of LED, and the 30 pin of STM32F103C8 is connected with TXD pin, and 31 pin connection RXD pin to serial port debugging assistant is connected to these two pins, as the interface of debugging. Pins 20 and 44 of the STM32F103C8 are respectively connected with BOOT1 and BOOT0, and are used as a starting signal of a single chip microcomputer and are part of a minimum system. The 7 pin of STM32F103C8 is connected to NRST and to a 3.3V power supply through a 10K R4 resistor, and also to switch SW1 and a 100nF capacitor C10, acting as a reset button. Pins 18 and 19 of the STM32F103C8 are connected to pins PB0 and PB1 of the opto-electronic switch, respectively. And a pin 41 of the STM32F103C8 is connected with a pin PB5 of the Hall sensor.

Furthermore, fig. 3 is a debugging circuit module of a circuit of a grating displacement sensor, a chip model of the debugging module is CH340G, power is supplied by the output of the VOUT pin of lm7805, and pins 2 and 3 of the CH340G are connected with the TXD and RXD pins of fig. 2 to serve as a serial port data transmission channel. Pins 7 and 8 of CH340G are connected to a 12MHz crystal oscillator X2 and grounded through 2 capacitors of 22 pF. Pins 5 and 6 of CH340G are connected with CH340+ and CH340-, the two pins are added with a pin 5V and a ground pin, and the two pins can be connected to a computer through USB-5P.

Further, fig. 4 is a circuit diagram of an optoelectronic switch sensor module of a circuit of a grating displacement sensor and a connection method thereof. The module uses two EE-SX673 photoelectric switches in common, the power is supplied by the VOUT pin of lm7805, the output OUT pin is divided by the resistance of 1K and the resistance of 100 ohms, the two pins are respectively connected into the PB0 and the PB1 shown in the figure 2, and signals are transmitted to the main controller module.

Further, fig. 5 is a circuit diagram of a hall sensor module of a circuit of a grating displacement sensor and a connection method thereof. The module uses a 6201 type Hall switch, an emitter of the Hall switch is connected with PB5 of the main controller module, and the Hall switch is connected with a collector of the Hall switch through a 470 ohm resistor and a blue LED 2; its base is connected to the VOUT pin of lm7805 and to ground through a 0.1uF capacitor and its own collector.

Further, fig. 6 is a circuit diagram of a wireless communication module of a circuit of the grating displacement sensor and a connection method thereof. The module uses a Bluetooth chip of HC-08, which is powered by 3.3V to pin 12, and is grounded through a capacitor of 1uF and pin 13. Pins 1 and 2 of a Bluetooth chip of HC-08 are respectively connected with pins RXD3 and TXD3 of the main controller module to be used as serial port data transmission channels. Pins 18, 17, 16 and 14 of a Bluetooth chip of HC-08 are respectively connected with pins PB15, PB14, PB13 and PB12 of the main controller module to be used as data transmission channels.

Further, fig. 7 is a circuit diagram of a serial port module of a circuit of a grating displacement sensor and a connection method thereof. Serial port screen module is direct to insert with JP7 pin header the utility model discloses a, its 1, 2 pins are direct to link to each other with GND, and 7, 8 pins are direct to link to each other with the 5V voltage of the VOUT of lm7805, and its 3, 4, 5 pins link to each other in TXD2, RXD2 of singlechip respectively.

Claims (10)

1. The utility model provides a resiliometer circuit based on grating displacement sensing technology which characterized in that: the system comprises a power supply module, a main controller module, a debugging module, a sensor module, a wireless communication module and a serial port screen module; the power supply module is connected with and supplies power to the main controller module, the debugging module, the sensor module, the wireless communication module and the serial port screen module; the main controller module is also connected with the debugging module, the sensor module, the wireless communication module and the serial port screen module; the debugging module is only connected with the power supply module and the main controller module; the sensor module, the wireless communication module and the serial port screen module are only connected with the power supply module and the main controller module.

2. The resiliometer circuit based on grating displacement sensing technology according to claim 1, wherein: the power supply module mainly provides electric power support for each module of the circuit and completes voltage conversion through the two voltage stabilizing chips; the voltage of 6V provided by four alkaline batteries is reduced to 5V by a 7805 voltage stabilizing chip, 5V power supplies are provided for a wireless communication module, a sensor module and a serial port screen module, and the voltage of 5V is reduced to 3.3V by an AMS1117-3V3 voltage stabilizing chip, so that 3.3V power supplies are provided for a main controller module and a debugging module.

3. The resiliometer circuit based on grating displacement sensing technology according to claim 1, wherein: also comprises a power switch.

4. The resiliometer circuit based on grating displacement sensing technology according to claim 1, wherein: the main controller module adopts STM32f103c8t6, and its processor core maximum frequency can reach 72MHz, possess 35 high-speed I/O mouths, 4 counter interfaces, three USART and DMA channel.

5. The resiliometer circuit based on grating displacement sensing technology according to claim 1, wherein: the debugging module reserves a microUSB communication interface and a plurality of general I/O interfaces for development and debugging.

6. The resiliometer circuit based on grating displacement sensing technology according to claim 1, wherein: the sensor module is a part of the main controller for sensing the outside; the sensor module mainly comprises two parts, namely a photoelectric module and a Hall module.

7. The resiliometer circuit based on grating displacement sensing technology according to claim 6, wherein: the photoelectric module is an implementation part of a grating displacement sensing technology and comprises a grating and a photoelectric switch circuit, wherein the photoelectric switch is an EE-SX673 type switch, is powered by a 5v power supply, and outputs a voltage signal by connecting an out pin with a pull-up resistor; two EE-SX673 photoelectric switches are matched with the grating to output pulse signals, the moving distance of the grating can be measured, and the rebound distance can be further obtained.

8. The resiliometer circuit based on grating displacement sensing technology according to claim 6, wherein: the Hall module has the main function of achieving the function of a switch, and the top of the bouncing rod is provided with a magnet which can generate a strength magnetic field; the Hall switch detects the magnetic field to judge whether the tapping rod rises to the top or not, and transmits the information to the control module.

9. The resiliometer circuit based on grating displacement sensing technology according to claim 1, wherein: the wireless communication module adopts HC-08 Bluetooth to achieve the function of wireless communication; and the ultra-long distance communication of 80 meters can be realized in an open environment.

10. The resiliometer circuit based on grating displacement sensing technology according to claim 1, wherein: and the serial port screen module is used for displaying the working state and the test result of the resiliometer in real time.

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