CN209823443U

CN209823443U - Intelligent acquisition system and intelligent acquisition instrument using same

Info

Publication number: CN209823443U
Application number: CN201822259530.4U
Authority: CN
Inventors: 郭建华; 林国利; 潘久辉
Original assignee: Guangzhou Haida Safety Control Intelligent Technology Co Ltd
Current assignee: Guangzhou Hi Target Surveying Instrument Co ltd
Priority date: 2018-12-30
Filing date: 2018-12-30
Publication date: 2019-12-20
Anticipated expiration: 2028-12-30

Abstract

The utility model discloses an intelligent acquisition system, which comprises a power supply, a signal acquisition module and a processor; the signal acquisition module is bidirectionally connected with the processor, and the power supply is connected with the processor and the signal acquisition module; the power supply comprises a charging module and a voltage boosting and reducing circuit, and the charging module is connected with the voltage boosting and reducing circuit. The utility model discloses guarantee that intelligent acquisition appearance can normally last long-time work under the low temperature environment.

Description

Intelligent acquisition system and intelligent acquisition instrument using same

Technical Field

The utility model relates to an intelligent acquisition field especially relates to an intelligent acquisition system and use intelligent acquisition appearance of this system.

Background

The intelligent acquisition instrument is mainly applied to the field of engineering detection, such as reservoir dams, mines, bridges, tunnels, foundation pits, rail transit, slopes, tailing reservoirs and other scenes, and needs to work for a long time in an outdoor environment. Most outdoor power supplies do not provide energy, and long-term data acquisition and monitoring can be realized only by internal batteries. The existing power supply is generally provided with the following 3 schemes:

1. the power adapter is adopted for supplying power, and the problem of power consumption is not required to be considered. But the application range is extremely small, and a 220V alternating current power supply is required to be arranged in a working environment and is connected separately. However, the acquisition instrument is generally applied to outdoor environment, has no adaptive power supply and cannot supply power to the acquisition instrument.

2. With a disposable power supply, the power supply of the circuit is turned off when not in use. The disposable power supply can work in an extremely low-temperature environment, but the batteries need to be replaced manually when the batteries are used up, and the disposable power supply is small in capacity, short in service life and high in maintenance cost.

3. The solar cell panel is externally connected with the power supply of the built-in lithium battery. However, in an environment with a temperature lower than-10 ℃, the internal resistance of the battery becomes large, the battery cannot discharge, and the equipment cannot work normally.

SUMMERY OF THE UTILITY MODEL

In order to overcome the defects of the prior art, the utility model aims to provide a low-power consumption intelligent acquisition system, which ensures that an intelligent acquisition instrument can normally continuously work for a long time under a low-temperature environment.

The second objective of the present invention is to provide an intelligent acquisition instrument using the system, which can work for a long time in low temperature environment.

The utility model discloses an one of the purpose adopts following technical scheme to realize:

the intelligent acquisition system comprises a power supply, a signal acquisition module and a processor; the signal acquisition module is bidirectionally connected with the processor, and the power supply is connected with the processor and the signal acquisition module; the power supply comprises a charging module and a voltage boosting and reducing circuit, and the charging module is connected with the voltage boosting and reducing circuit.

Further, the boost-buck circuit comprises a plurality of boost-buck sub-circuits, and the boost-buck sub-circuits convert the voltage of the charging module into the voltage matched with the signal acquisition module.

Furthermore, the power supply further comprises a protection circuit, wherein the input end of the protection circuit is connected with the charging module, and the output end of the protection circuit is connected with the boost circuit.

Furthermore, the signal acquisition module comprises an excitation signal circuit, a signal acquisition circuit, a temperature acquisition circuit, a plurality of sensors and a relay; the excitation signal circuit controls the relay through a pulse signal, and the sensor transmits a signal to the processor through the signal acquisition circuit and the temperature acquisition circuit.

Furthermore, the charging module comprises a solar charging circuit and a lithium battery, and the protection circuit comprises a reverse connection protection sub-circuit and an overvoltage and overcurrent protection sub-circuit; the solar charging circuit comprises a solar cell panel and a solar power management chip, and the solar cell panel is connected with the solar power management chip through the reverse connection protection sub-circuit; the charging module is connected with the overvoltage and overcurrent protection sub-circuit and is connected with the signal acquisition module.

Further, the sensors comprise a vibrating wire sensor, a temperature sensor and an RS485 sensor.

Further, still include the communication unit, the communication unit with the two-way electricity of treater is connected, the communication unit includes at least one of 4G communication module, bluetooth module, RS485 interface, RS232 interface.

Furthermore, the processor is connected with the RTC chip, and is used for setting an alarm clock and waking up the processor at regular time.

Further, the processor adopts STM32 series single-chip microcomputer.

The second purpose of the utility model is realized by adopting the following technical scheme:

the intelligent acquisition instrument comprises the intelligent acquisition system, a solar charging panel, a power switch and an LED indicating lamp, wherein the solar charging panel, the power switch and the LED indicating lamp are arranged on the shell of the intelligent acquisition instrument.

Compared with the prior art, the beneficial effects of the utility model reside in that:

the utility model provides an intelligent acquisition system and use intelligent acquisition appearance of this system, through the setting of the module of charging and the lift voltage circuit of power, directly supply power to signal acquisition module, conversion efficiency is high, avoids using the defect that disposable battery or built-in lithium cell supplied power among the prior art. Under the low temperature state, the system can automatically work for a long time without maintenance, and the dynamic adjustment of the system processor is ensured through the signal acquisition module, so that the optimal design of power consumption is realized.

Drawings

Fig. 1 is a schematic structural diagram of an embodiment of the present invention;

fig. 2 is a system block diagram of an embodiment of the present invention;

fig. 3 is a schematic diagram of a sensor switching circuit according to an embodiment of the present invention.

Detailed Description

The present invention will be further described with reference to the accompanying drawings and the detailed description, and it should be noted that the embodiments or technical features described below can be arbitrarily combined to form a new embodiment without conflict.

As shown in fig. 1, the utility model discloses an intelligent acquisition system, which comprises a power supply, a signal acquisition module and a processor; the signal acquisition module is bidirectionally connected with the processor, and the power supply is connected with the processor and the signal acquisition module; the power supply comprises a charging module and a voltage boosting and reducing circuit, and the charging module is connected with the voltage boosting and reducing circuit.

Through the setting of the charging module and the voltage-increasing and reducing circuit of the power supply, the signal acquisition module is directly powered, the conversion efficiency is high, and the defect that a disposable battery or a built-in lithium battery is used for supplying power in the prior art is overcome. Under the low temperature state, the system can automatically work for a long time without maintenance, and the dynamic adjustment of the system processor is ensured through the signal acquisition module, so that the optimal design of power consumption is realized.

As shown in FIG. 2, the power supply of the system is a 3.7V lithium battery, and at least 70% of electric quantity can be supplied to the intelligent acquisition system in a low-temperature environment. The 3.7V voltage is adopted to improve the conversion efficiency of the power supply and reduce the electric energy wasted by converting the voltage of 8.4V or higher into the working voltage required by each module in the prior art. And meanwhile, the plurality of batteries are used in parallel, so that the condition that the battery voltage is uneven and the service life of the battery is shortened can be avoided.

In this embodiment, the processor and the signal acquisition module are directly powered by the boost-buck sub-circuit or the lithium battery, and the voltage of the charging module is converted into a voltage adapted to the processor and the signal acquisition module, and specifically includes a chip U1 for converting the voltage into 3.3V, a chip U2 for converting the voltage into 3.8V, a chip U3 for converting the voltage into 12V, a chip U4LTC3539 for converting the voltage into 5V, and a TPS 61282D. The conversion efficiency of the buck-boost chip is between 90% and 100%, efficient power conversion is achieved, and excessive power loss is avoided. Meanwhile, the chip static current of the boost-buck sub-circuit is extremely low, and the current is less than 10 microamperes in an off state.

For better protection of the power supply, the present embodiment is further provided with a protection circuit, and has functions of reverse connection prevention, overvoltage, undervoltage, overcurrent and the like. The input end of the protection circuit is connected with the charging module, and the output end of the protection circuit is connected with the voltage-boosting circuit. The charging module comprises a solar charging circuit and a lithium battery, and the protection circuit comprises a reverse connection protection sub-circuit and an overvoltage and overcurrent protection sub-circuit. Solar charging circuit includes solar cell panel and solar energy power management chip, solar cell panel passes through the protection sub-circuit connection that joins conversely solar energy power management chip, the model is CN3722, is PWM step-down mode charge management integrated circuit, and peripheral components and parts are few, and simple to use just can work under the environment of-40 ℃ -85 ℃, adapts to the utility model discloses a requirement at the field work. The output end of the solar power management chip is connected with the overvoltage and overcurrent protection sub-circuit, so that the solar charging power supply is better managed, the voltage of the solar charging circuit is prevented from being unstable, and the intelligent acquisition system is prevented from being influenced. The charging module is connected with the overvoltage and overcurrent protection sub-circuit and is connected with the signal acquisition module.

More specifically, the signal acquisition module comprises an excitation signal circuit, a signal acquisition circuit, a temperature acquisition circuit, a plurality of sensors and a relay. In this embodiment, the processor adopts STM32 singlechip. The processor sends a plurality of pulse signals to the excitation signal circuit, so that the work of the relay is controlled, and the aim of controlling the sensor to collect data is fulfilled. The sensor collects data and sends the data to the processor, and the data are transmitted to workers by the processor.

In the embodiment, the sensors comprise a vibrating wire sensor, a temperature sensor and an RS485 sensor. Specifically, the data of the vibrating wire sensor is transmitted to the processor through the signal acquisition circuit, the data of the temperature sensor is transmitted to the processor through the temperature acquisition circuit, and the data of the RS485 sensor is transmitted to the processor through the conversion channel. As shown in fig. 3, the type of the sensor is switched using a slide switch. The processor is also externally provided with an RTC chip for setting an alarm clock and waking up the processor at regular time.

For making things convenient for this intelligent acquisition system and the data transmission of PC end, this embodiment still includes communication unit, communication unit with the two-way electricity of treater is connected, communication unit includes at least one of 4G communication module, bluetooth module, RS485 interface, RS232 interface, and the staff can select one or more wherein to communicate according to actual conditions.

The utility model also provides an intelligent acquisition appearance including this intelligent acquisition system, including solar charging panel, switch, LED pilot lamp, the casing of intelligent acquisition appearance is located to solar charging panel and switch, LED pilot lamp, makes things convenient for the staff to operate.

In the present invention, each part is controlled by the processor. When different tasks are executed, the processor can dynamically adjust the running frequency of the processor according to the CPU resources required by the tasks, so that the power consumption performance reaches the optimal state. When there are fewer tasks, the processor will run at the lowest frequency 100 kHz. Under the voltage of 3.3V required by the processor, the current is only 330 mA, and after the task is completed, the sleep mode is entered, and the current is less than 10 mA. Before entering the sleep mode, the processor can set an alarm clock through the external RTC chip and wake up the processor at regular time. The intelligent acquisition instrument can automatically work for a long time without maintenance and dynamically adjust the frequency of the processor in a low-temperature state, and can run different frequencies according to different tasks to realize the optimal design of power consumption.

The above embodiments are only preferred embodiments of the present invention, and the protection scope of the present invention cannot be limited thereby, and any insubstantial changes and substitutions made by those skilled in the art based on the present invention are all within the protection scope of the present invention.

Claims

1. The intelligent acquisition system is characterized by comprising a power supply, a signal acquisition module and a processor; the signal acquisition module is bidirectionally connected with the processor, and the power supply is connected with the processor and the signal acquisition module; the power supply comprises a charging module and a voltage boosting and reducing circuit, and the charging module is connected with the voltage boosting and reducing circuit.

2. The intelligent acquisition system as in claim 1, wherein the buck-boost circuit comprises a plurality of buck-boost sub-circuits to convert the voltage of the charging module to a voltage compatible with the signal acquisition module.

3. The intelligent acquisition system as claimed in claim 2, wherein the power supply further comprises a protection circuit, an input terminal of the protection circuit is connected to the charging module, and an output terminal of the protection circuit is connected to the buck-boost circuit.

4. The intelligent acquisition system of claim 3, wherein the signal acquisition module comprises an excitation signal circuit, a signal acquisition circuit, a temperature acquisition circuit, a plurality of sensors, and a relay; the excitation signal circuit controls the relay through a pulse signal, and the sensor transmits a signal to the processor through the signal acquisition circuit and the temperature acquisition circuit.

5. The intelligent acquisition system of claim 4, wherein the charging module comprises a solar charging circuit and a lithium battery, and the protection circuit comprises a reverse connection protection sub-circuit and an over-voltage and over-current protection sub-circuit; the solar charging circuit comprises a solar cell panel and a solar power management chip, and the solar cell panel is connected with the solar power management chip through the reverse connection protection sub-circuit; the charging module is connected with the overvoltage and overcurrent protection sub-circuit and is connected with the signal acquisition module.

6. The smart acquisition system as claimed in claim 4, wherein the sensor comprises a vibrating wire sensor, a temperature sensor, an RS485 sensor.

7. The intelligent acquisition system of claim 5 or 6, further comprising a communication unit, wherein the communication unit is electrically connected with the processor in a bidirectional manner, and the communication unit comprises at least one of a 4G communication module, a Bluetooth module, an RS485 interface and an RS232 interface.

8. The intelligent acquisition system of claim 7, wherein the processor is connected to the RTC chip for setting an alarm clock and waking up the processor periodically.

9. The intelligent acquisition system of claim 8 wherein the processor employs an STM32 series single chip microcomputer.

10. The intelligent acquisition instrument, which is characterized by comprising the intelligent acquisition system as claimed in any one of claims 1 to 9, a solar charging panel, a power switch and an LED indicator lamp, wherein the solar charging panel, the power switch and the LED indicator lamp are arranged in a shell of the intelligent acquisition instrument.