CN201235929Y - Digital ship helm angle meter - Google Patents

Abstract

The utility model provides a digital rudder angle meter for ships, which comprises an I/V transformation module, a signal conditioning circuit, a communication module, a signal select switch, a singlechip, a power module, a display drive circuit, a display module, a standardization key and a light modulation key, wherein the output ends of the I/V transformation module and the signal conditioning circuit are respectively connected to the signal select switch, the output end of which is connected to the A/D transformation pin of the singlechip, the communication module is connected to the pin of the serial port of the singlechip, the display module is connected with the singlechip by the display drive circuit, the standardization key and the light modulation key are rspectivewly connected with one I/O interface of the singlechip, and the signal conditioning circuit, the singlechip, the communication module and the display module are respectively connected with the power module. The utility model realizes the digitization of the digital rudder angle meter for ships, can carry out digitalized treatment and has reasonable design, practicability, convenience, high stability and direct and accurate numerical reading.

Description

Digital naval vessel rudder angle meter

Technical field

The utility model relates to a kind of digital naval vessel rudder angle meter, belongs to the navigating equipment technical field.

Background technology

In recent years, along with the development of ship building industry, development is demanded in navigating equipment manufacturing field urgently.It all is to adopt heavy interchange or the direct current synchro that falls behind that traditional rudder angle sends and receive display equipment, the pointer-type simulation shows, reading is not directly and be easy to generate error, and when miscellaneous equipment (as digital devices such as autopilots) needs to insert this signal, need carry out digitized processing again, extremely inconvenience and precision are lower, have influenced the whole controller performance of system.

Summary of the invention

The utility model provides the digital directly and accurately naval vessel of a kind of good stability, reading rudder angle meter at the deficiencies in the prior art.

Digital naval vessel of the present utility model rudder angle meter is by the following technical solutions:

Digital rudder angle meter comprises the I/V conversion module, signal conditioning circuit, communication module, signal selecting switch, micro controller system, power module, display driver circuit, display module, demarcate button and light modulation button, the mouth of I/V conversion module and the mouth of signal conditioning circuit all are connected on the signal selecting switch, the mouth of signal selecting switch is linked on the A/D switched pins of micro controller system, communication module is connected on the serial port pin of micro controller system, display module is connected with micro controller system by display driver circuit, demarcate button and link to each other signal conditioning circuit with an I/0 interface of micro controller system respectively with the light modulation button, micro controller system, communication module, display module all is electrically connected with power module.

The utility model has been realized the digitalisation of naval vessel rudder angle meter, can carry out digitized processing, and reasonable in design, practical and convenient, good stability, reading are directly accurate.

Description of drawings

Fig. 1 is the structural principle schematic block diagram of the digital rudder angle meter of the utility model.

Fig. 2 is rudder angle computing and flow for displaying figure.

Fig. 3 is the electrical schematic diagram of the digital rudder angle meter of the utility model.

Among the figure: 1, current input signal, 2, voltage input signal, 3, digital input signals, 4, I/V conversion module, 5, signal conditioning circuit, 6, communication module, 7, signal selecting switch, 8, micro controller system, 9, display driver circuit, 10, light beam, 11, LED charactron, 12, demarcate button, 13, the light modulation button, 14, power module.

The specific embodiment

As shown in Figure 1, for adapting to the helm signal of on-the-spot heterogeneity and kind, the signal input interface design of digital rudder angle meter of the present utility model has electric current, voltage and three kinds of interface circuits of digital signal input, current input signal 1 is needed I/V conversion module 4, voltage input signal 2 is needed signal conditioning circuit 5, and corresponding digital input signals 3 needs communication module 6.Also comprise parts such as signal selecting switch 7, micro controller system 8, power module 14, display driver circuit 9, display module, demarcation button 12, light modulation button 13 in addition, display module has light beam demonstration 10 and LED to show 11.Current input signal 1 links to each other with I/V conversion module 4, and the mouth of I/V conversion module 4 is connected on the signal selecting switch 7.Voltage input signal 2 links to each other with signal conditioning circuit 5, the output of modulate circuit 5 is also linked on the signal selecting switch 7, according to the source difference of on-site signal, electric current input or the output of voltage input voltage signal processed are linked on the A/D switched pins of micro controller system (MCU) 8 by signal selecting switch 7.Digital input signals 3 is linked by communication module 6 on the serial port pin of micro controller system (MCU) 6, and the rudder angle numerical information that micro controller system obtains is connected on light beam 10 and the LED charactron 11 by display driver circuit 9.Demarcating button 12 links to each other with an I/O mouth of micro controller system 8 respectively with light modulation button 13.Power module 14 is that (variation range 18V ~ 40V) direct supply is transformed into the stabilized power source that system needs, and uses for each module such as signal conditioning circuit 5, micro controller system 8, communication module 6, display driver circuit 9 with off-square+24V on the ship.Eight risc architecture single chip computer AT of little power consumption High Performance mega48 that micro controller system (MCU) 6 adopts atmel corps to produce, the TQFP32 compact package, in the Flash program store of 4KB, the EEPROM of 256B and the static memory of 512B are arranged.Support ISP serial downloading mode, the programmable code protection is arranged.ATmega48 is responsible for data acquisition, demarcates and data communication, also will be used as some information that need power down to preserve of memory stores simultaneously.

Fig. 3 has provided the electrical schematic diagram of the digital rudder angle meter of the utility model.

The working process of the digital rudder angle meter of the utility model is: if the incoming signal of rudder angle meter is a current signal, it at first will pass through I/V conversion module 4, and current signal is transformed into voltage signal; If the incoming signal of rudder angle meter is a voltage signal, need to nurse one's health through 5 pairs of signals of modulate circuit, by select switch 7 the A/D switched pins of current input signal and micro controller system 8 is connected, by micro controller system 8 controls helm signal is carried out digital collection then, the digital quantity that collects is through the linear transformation of micro controller system 8, be transformed into the rudder angle value, output to display device by display driver circuit.

When the incoming signal of rudder angle meter is curtage, system just started working or or when working after a while the angle of arrival deviation, need demarcate it, concrete grammar is as follows:

The motion of control steering wheel when rudder blade arrives midway location (0 °), is pressed the demarcation key, and micro controller system deposits A/D transformation result at this moment in inner E ²Among the PROM; When controlling rudder blade then and forwarding 30 ° on a left side and right 30 ° of positions respectively to, also deposit corresponding A/D transformation result in inner E by demarcating key ²Among the PROM, demarcation is finished.

When actual measurement, micro controller system through linear transformation, just can draw current rudder angle value after obtaining the AD conversion value.Rudder angle computing and flow for displaying figure are as shown in Figure 2.

Wherein:

A-rudder angle value

AD _M0 ° of point of-rudder calibration value

AD _R30 ° of points of-right standard rudder calibration value

AD _L30 ° of points of-left rudder calibration value

If signal is the NMEA0183 data format ($HBRUD that is sent by digital electric rudder angle transmitter, XX.X, X*XX, its meaning is respectively: company information and data connotation HBRUD, rudder angle value XX.X beats rudder direction X, proof test value XX) digital signal, level translation by communication module 6 is received by micro controller system 8, directly send apparent then by display driver.

Which kind of signal input form no matter, display brightness can be undertaken digital regulated by light modulation button 13, to adapt to daytime and the different requirements of night to display brightness.

Claims (1)

1. digital naval vessel rudder angle meter, comprise the I/V conversion module, signal conditioning circuit, communication module, signal selecting switch, micro controller system, power module, display driver circuit, display module, demarcate button and light modulation button, it is characterized in that: the mouth of I/V conversion module and the mouth of signal conditioning circuit all are connected on the signal selecting switch, the mouth of signal selecting switch is linked on the A/D switched pins of micro controller system, communication module is connected on the serial port pin of micro controller system, display module is connected with micro controller system by display driver circuit, demarcate button and link to each other signal conditioning circuit with an I/O interface of micro controller system respectively with the light modulation button, micro controller system, communication module, display module all is electrically connected with power module.

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