CN203069179U

CN203069179U - Ultra-low power consumption dipmeter

Info

Publication number: CN203069179U
Application number: CN 201220681910
Authority: CN
Inventors: 张嘉璐; 李超超; 李尧; 张守多
Original assignee: Shandong University of Science and Technology
Current assignee: Shandong University of Science and Technology
Priority date: 2012-12-12
Filing date: 2012-12-12
Publication date: 2013-07-17
Anticipated expiration: 2022-12-12

Abstract

The utility model provides an ultra-low power consumption dipmeter which comprises a power supply module, a singlechip microcomputer module, a liquid crystal display module and a button module. The singlechip microcomputer module is respectively connected with the power supply module, the button module and the liquid crystal display module. The dipmeter further comprises a three-axis acceleration sensor module, one end of the three-axis acceleration sensor module is connected with the power supply module while the other end of the three-axis acceleration sensor module is connected with the singlechip microcomputer module. The dipmeter can directly measure dip angles of bevels, gradients, planes and the like in a digitization manner, avoids deficiency of troublesome operation and mis-read in conventional measurement, and is wide in measuring range and high in precision, self-calibrated and wide in use. The power supply module, the singlechip microcomputer module and the three-axis acceleration sensor module all adopts low power consumption chips which are long in service life. The dipmeter is small in size, convenient to carry and simple to operate, and cannot only measure the dip angles, but also measure acceleration of gravity in the three-axis directions.

Description

The super low-power consumption drift indicator

Technical field

The utility model relates to a kind of drift indicator, particularly a kind of super low-power consumption drift indicator.

Background technology

Drift indicator is widely used in the multiple industries such as building, military project, space flight and national economy.Existing drift indicator is of a great variety, and mostly precision is not high enough, and precision improves the back because product size is excessive, causes shortcomings such as drift indicator emergent power exorbitant expenditure, cost height.Along with science and technology development and progress, all trades and professions have in use proposed more and more higher requirement to drift indicator, and the urgent need cost is low, volume is little, reliability is high, the renewal product that power consumption is little.

The utility model content

For solving problems of the prior art, the utility model proposes a kind of super low-power consumption drift indicator.

A kind of super low-power consumption drift indicator, comprise power module, one-chip computer module, LCD MODULE, key-press module, above-mentioned one-chip computer module links to each other with power module, key-press module, LCD MODULE respectively, also comprise the 3-axis acceleration sensor module, one end of above-mentioned 3-axis acceleration sensor module links to each other with power module, and the other end links to each other with one-chip computer module.

Above-mentioned 3-axis acceleration sensor module adopts the low-power consumption chip.

The utility model can realize inclination angles such as inclined-plane, the gradient, plane are realized that digitizing directly measures, deficiency such as avoided the traditional measurement troublesome poeration, misread.Measurement range is wide, precision is high, can calibrate automatically, and measuring error is used comparatively extensive in 1 degree.Its power module, one-chip computer module, 3-axis acceleration sensor module all adopt the low-power consumption chip, service time is long, this drift indicator volume is little, easy to carry, simple to operate, can either realize the measurement at inclination angle, can measure three axial acceleration of gravity again.

Description of drawings

Below in conjunction with accompanying drawing embodiment of the present utility model is described in further detail:

Fig. 1 is systematic schematic diagram of the present utility model.

Fig. 2 is system schematic of the present utility model.

Fig. 3 is main program flow chart of the present utility model.

Embodiment

A kind of super low-power consumption drift indicator, as shown in Figure 2, comprise power module, one-chip computer module, LCD MODULE, key-press module, one-chip computer module links to each other with power module, key-press module, LCD MODULE respectively, this drift indicator also comprises the 3-axis acceleration sensor module, one end of 3-axis acceleration sensor module links to each other with power module, and the other end links to each other with one-chip computer module.One-chip computer module is connected with the 3-axis acceleration sensor module with the LED LCD MODULE.By key-press module control, realize reading the acceleration value of 3-axis acceleration sensor module X, Y, Z three directions, and to carry out the data computation treatment conversion through one-chip computer module inside be the inclination angle number of degrees, send on the LCD liquid crystal display device module to show.One-shot measurement is finished, and system can enter the low power operation pattern automatically.

The 3-axis acceleration sensor module adopts the low-power consumption chip, and ADXL345 is a little and thin super low-power consumption three axis accelerometer, resolution height (13), and measurement range reaches ± 16g.Digital output data is 16 two's complement forms, can pass through SPI(3 line or 4 lines) or the visit of I2C digital interface.Its volume is little, in light weight, measuring accuracy is high, when Vs=2.5V, is low to moderate 23uA under the measurement pattern, and power consumption is very little.Its power consumption changes automatically in proportion with bandwidth, when Vs=2.5V, is low to moderate 23uA under the measurement pattern, is 0.1uA under the standby mode.In order further to reduce the power consumption of accelerometer, control the conducting of CMOS pipe by the P1.0 pin of single-chip microcomputer, when P1.0 is high level, the CMOS pipe ends, ADXL345 does not work, and when P1.0 was low level, CMOS managed conducting, ADXL345 works on power, thereby the conduction situation of control ADXL345 is to reduce power consumption.

ADXL345 is the three axis accelerometer with digital interface, and it comprises 13 ADC and 32 grades of FIFO (every) output buffer with powerful interrupt system.When the specified quantity data are stored among the FIFO, it will produce a look-at-me.By writing suitable register, can the output data rate of ADC be configured.Utilize the FIFO output buffer to improve the resolution of ADXL345 based on oversampling technique among the design.The built-in offset register of ADXL345 acceleration transducer, the function of compensating offset output automatically.These registers comprise 8 two's complement values, for adding the accekeration that all record automatically to, are sent in the DATA register thereupon, thus the data that the DATA register is collected compensating offset amount.

Need to prove that also under the instruction of this instructions, any equivalents or obvious variant that those skilled in the art make the utility model all should be in protection domains of the present utility model.

Claims

1. super low-power consumption drift indicator, comprise power module, one-chip computer module, LCD MODULE, key-press module, described one-chip computer module links to each other with power module, key-press module, LCD MODULE respectively, it is characterized in that: also comprise the 3-axis acceleration sensor module, one end of described 3-axis acceleration sensor module links to each other with power module, and the other end links to each other with one-chip computer module.

2. a kind of super low-power consumption drift indicator according to claim 1 is characterized in that: described 3-axis acceleration sensor module employing ADXL345 chip.