CN201724942U - Electronic rotate speed/hour meter of marine diesel engine CAN bus - Google Patents

Abstract

The utility model relates to a marine diesel engine measuring instrument, in particular to an electronic rotate speed/hour meter of a marine diesel engine CAN bus. The meter comprises a front meter cover and an instrument rear shell, wherein the bottom of the inner cavity of the instrument rear shell is provided with a boss; the boss is fixedly provided with a power circuit board; a front panel of the circuit board is provided with a 24V/5V voltage stabilization chip and a 14-pin plug, and a rear panel thereof is provided with a dial switch and a 9-pin socket connected with an external 24V power supply, the input and output of the CAN bus and a rotate speed signal wire and used for the electrical connection inside and outside the instrument; a measuring circuit board is fixedly arranged in front of the power circuit board through hexagonal studs; the front panel of the circuit board is provided with an arc-shaped optical grating; an LED light emitting module used for lightening the instrument category designator and alarming, and an LED digital tube used for rotate speed indication and time indication are sequentially arranged below the arc-shaped optical grating; the rear panel of the measuring circuit board is provided with a DSP main controller chip, two driver chips electrically connected with the DSP main controller chip, and a 14-pin socket connected with the 14-pin plug of the power circuit board; and the front end part of the instrument rear shell is provided with a PVC mask.

Description

Electronics rotating speed/the hour meter of marine diesel CAN bus

Technical field

The utility model relates to a kind of marine diesel measurement instrument, particularly a kind of electronics rotating speed/hour meter of marine diesel CAN bus.

Background technology

For a long time, most marine diesels all are provided with the instrument control box, and the diesel engine speed on this instrument control box/hour meter overwhelming majority adopts traditional magneto-electric pointer instrument, and this type of table has only simple measurement function and measuring accuracy low.Present raising and development along with section's technology progress and Modern Shipbuilding industrial level, its simple measurement function of such instrument and precision can not adapt to the modernization design requirement of present shipbuilding, it is main--and-weak point is that not only measuring accuracy is low, the more important thing is and to realize the digital measurement transmission, information system management, telecommunication monitoring, and modern requirement such as unmanned engine room design, this is the problem that this field needs product technology to update.

Summary of the invention

The purpose of this utility model is to overcome the deficiencies in the prior art, and a kind of electronics rotating speed/hour meter of marine diesel CAN bus is provided, and makes it simple in structure, reliable operation improves measuring accuracy, is convenient to realize digital measurement and transmission, information system management, the telecommunication monitoring.

The utility model is for overcoming the deficiencies in the prior art, adopted following technical scheme: a kind of electronics rotating speed/hour meter of marine diesel CAN bus, comprise the preceding table lid that has transparent protective shield, the instrument back casing, preceding table lid is connected through sunk screw with the instrument back casing, boss is arranged at the bottom that it is characterized in that aforementioned instrument back casing inner chamber, on this boss, be installed with a power circuit plate, 14 pin plugs that 24V/5V voltage stabilizing chip arranged on the front panel of this wiring board and be electrically connected with it, have on the plate face thereafter toggle switch and in order to peripheral hardware 24V power supply, the 9 pin sockets that are electrically connected between input and output of CAN bus and the tach signal line, this 9 pin socket is electrically connected with 14 pin plugs; The place ahead of power circuit plate is installed with the measurement display board through hexagonal double-ended bolt, LED arc grating is arranged on the front panel of this display board, this arc grating below is provided with successively in order to light the LED light emitting module of instrument classification identifier and warning, LED charactron in order to rotating speed indication and time indication, on the rear panel of measurement display board DSP main control chip is arranged, two display driver chips that are electrically connected with this control chip and 14 needle sockets that are electrically connected with them, a slice chip for driving is electrically connected with LED arc grating, another sheet chip for driving is electrically connected with LED light emitting module and LED charactron, and 14 needle sockets are electrically connected with 14 pin plugs on the power circuit plate; Aforementioned instrument back casing leading section is provided with the PVC facial mask.

Electronics rotating speed/the hour meter of the marine diesel CAN bus that provides by the utility model, by a circular hole of instrument back casing rear end, the toggle switch fork-like farm tool used in ancient China of regulating on the power panel is selected the alarm set point of diesel engine and the flywheel number of teeth of diesel engine during use.Use 9 pin sockets on the power circuit plate to be connected with the tach signal line with 24V power supply, the input and output of CAN bus of peripheral hardware.24V/5V voltage stabilizing chip becomes 5V voltage with the 24V voltage transitions, provide the input and output and the tach signal of voltage stabilizing 5V working power, CAN bus through 14 pin plugs to measuring display board, after the dsp controller chip of aforementioned signal through having the CAN communication function measured and amplified, remove to control two display driver chips, this chip for driving drives the arc of measuring on the display board front panel and shows grating and LED light emitting module, whether indication work is normal and light instrument classification identifier, controls the LED charactron simultaneously and show tachometer value and hourage.The utility model is simple in structure, reliable operation, and it not only can realize the accurate measurement to diesel engine speed and hours of operation, and can also realize remote data transmission, controlling alarm, is convenient to realize digital measurement and transmission, information system management and telecommunication monitoring.

Description of drawings

The utility model has following accompanying drawing:

Fig. 1 is a structural representation of the present utility model;

Fig. 2 is the right view of Fig. 1;

Fig. 3 is the left view of Fig. 1;

Fig. 4 is for measuring the front view of display board;

Fig. 5 is for measuring the back synoptic diagram of display board;

Fig. 6 is the front view of PVC facial mask.

Embodiment

Embodiment of the present utility model is described with reference to the accompanying drawings.In the embodiment of Fig. 1-shown in Figure 6, a kind of electronics rotating speed/hour meter of marine diesel CAN bus, comprise the preceding table lid 11 that has transparent protective shield 17, instrument back casing 19, before the table cover 11 and instrument back casing 19 be connected through sunk screw 21, boss is arranged at the bottom of aforementioned instrument back casing 19 inner chambers, on this boss, be installed with a power circuit plate 1,14 pin plugs 4 that 24V/5V voltage stabilizing chip 2 arranged on the front panel of this wiring board 1 and be electrically connected with it, have on the plate face thereafter toggle switch 5 and in order to peripheral hardware 24V power supply, the 9 pin sockets 3 that are electrically connected between input and output of CAN bus and the tach signal line, this 9 pin socket is electrically connected with 14 pin plugs 4; The place ahead of power circuit plate 1 is installed with through hexagonal double-ended bolt 18 and measures display board 6, LED arc grating 11 is arranged on the front panel of this display board, these arc grating 11 belows are provided with successively in order to light the LED light emitting module 12 of instrument classification identifier and warning, LED charactron 14 in order to rotating speed indication and time indication, 13, on the rear panel of measurement display board 6 DSP master controller chip 8 is arranged, two display driver chips 7 that are electrically connected with this controller chip, 10 and 14 needle sockets 9 that are electrically connected with them, a slice chip for driving 7 is electrically connected with LED arc grating, another sheet chip for driving 10 and LED light emitting module 12 and LED charactron 14,13 are electrically connected, and 14 needle sockets 9 are electrically connected with 14 pin plugs 4 on the power circuit plate 1; Aforementioned instrument back casing 19 leading sections are provided with PVC facial mask 15.24V/5V voltage stabilizing chip 2 adopts LM336 voltage stabilizing chip, and the 24V power source conversion is become 5V voltage, provides working power to measuring display board.Two display driver chips 7,10 of measuring on the display board rear panel adopt the MAX7219 amplifier chip, the LED arc grating that the treated data that record drive on the front panel by chip for driving 7, the measured value of Displaying Meter; Report to the police when lighting instrument classification identifier and transfiniting, and LED charactron 14 shows that the rotating speed of diesel engines and LED charactron 13 show hourages by the LED light emitting module 12 of chip for driving 10 driving LED arc light below.

Arc grating 11 on the aforementioned measurement display board 6, it adopts 6 LED arc lenticular lenses serial connections to constitute a complete measurement indicating graduation dish, and every LED arc grating is divided into 10 scales.On the aforementioned PVC facial mask 15, with aforementioned measurement display board 6 on the corresponding position of arc grating 11, LED light emitting module 12, rotating speed indication and time indication LED charactron 14,13 indicate scale value, instrument classification identifier and transparent window.Can conveniently read the grating scale value by window.Light emitting module is lighted instrument classification identifier with fork-like farm tool used in ancient China, diesel engine work state.What charactron showed is diesel engine speed and hourage.Aforementioned LED light emitting module 12 adopts green and red square double-colored planar LED light emitting module.Green is a normal operating conditions, and alarm condition is red, and its alarm set point is selected by the toggle switch on the power circuit plate.Middle part, aforementioned instrument back casing 19 rear ends also is provided with the double-screw bolt 20 of the usefulness that fixes.

Claims (5)

1. the electronics rotating speed/hour meter of a marine diesel CAN bus, comprise the preceding table lid (11) that has transparent protective shield (17), instrument back casing (19), preceding table lid (11) is connected through sunk screw (21) with instrument back casing (19), boss is arranged at the bottom that it is characterized in that aforementioned instrument back casing (19) inner chamber, on this boss, be installed with a power circuit plate (1), 14 pin plugs (4) that 24V/5V voltage stabilizing chip (2) arranged on the front panel of this wiring board (1) and be electrically connected with it, have on the plate face thereafter toggle switch (5) and in order to peripheral hardware 24V power supply, the 9 pin sockets (3) that are electrically connected between input and output of CAN bus and the tach signal line, this 9 pin socket is electrically connected with 14 pin plugs (4); The place ahead of power circuit plate (1) is installed with through hexagonal double-ended bolt (18) and measures display board (6), LED arc grating (11) is arranged on the front panel of this display board, this arc grating (11) below is provided with successively in order to light the LED light emitting module (12) of instrument classification identifier and warning, LED charactron (14 in order to rotating speed indication and time indication, 13), on the rear panel of measurement display board (6) DSP master controller chip (8) is arranged, two display driver chips (7 that are electrically connected with this controller chip, 10) and 14 needle sockets (9) that are electrically connected with them, a slice chip for driving (7) is electrically connected with LED arc grating, another sheet chip for driving (10) and LED light emitting module (12) and LED charactron (14,13) be electrically connected, 14 needle sockets (9) are electrically connected with 14 pin plugs (4) on the power circuit plate (1); Aforementioned instrument back casing (19) leading section is provided with PVC facial mask (15).

2. the electronics rotating speed/hour meter of marine diesel CAN bus according to claim 1, it is characterized in that the arc grating (11) on the aforementioned measurement display board (6), it adopts 6 LED arc lenticular lenses serial connections to constitute a complete measurement indicating graduation dish, and every LED arc grating is divided into 10 scales.

3. the electronics rotating speed/hour meter of marine diesel CAN bus according to claim 1, it is characterized in that on the aforementioned PVC facial mask (15), with the front panel of aforementioned measurement display board (6) on arc grating (11), LED light emitting module (12), rotating speed indication and the corresponding position of time indication LED charactron (14,13) indicate scale value, instrument classification identifier and transparent window.

4. according to the electronics rotating speed/hour meter of claim 1 or 3 described marine diesel CAN buses, it is characterized in that aforementioned LED light emitting module (12) adopts green and red square double-colored planar LED light emitting module.

5. the electronics rotating speed/hour meter of marine diesel CAN bus according to claim 1 is characterized in that middle part, aforementioned instrument back casing (19) rear end also is provided with the double-screw bolt (20) of the usefulness that fixes.

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