Marine diesel engine accelerator scale measurement system based on laser ranging mode

Abstract

According to the marine diesel engine accelerator scale measuring system based on the laser ranging mode, a laser ranging optical probe coaxial with an accelerator pull rod is installed on a body, the laser ranging optical probe detects the axial position variation of the accelerator pull rod when the speed of a diesel engine is adjusted, and a display screen is installed on the front wall of the body. The output end of the laser ranging optical probe and the input end of the display screen are both connected with a control part in the body, and the control part converts accelerator pull rod axial position variation information detected by the laser ranging optical probe into accelerator scale values which are displayed by the display screen. According to the utility model, the measuring structure is optimized, the diesel engine accelerator scale is measured and displayed, the accelerator scale measuring structure is simplified, and the structure cost is reduced; the problems of high cost, complicated structure, difficulty in operation, long production period and unstable measurement precision caused by a measurement mode of adopting a cam and an accelerator scale sensor in the original diesel engine accelerator scale measurement device are solved.

Description

TECHNICAL FIELD

[0001] The utility model belongs to diesel engine technical field, concretely relates to a marine diesel engine throttle scale measuring system based on laser ranging mode. BACKGROUND

[0002] In order to meet the requirements of ship remote control device and unmanned, marine diesel engine needs to install a set of diesel engine throttle scale measuring device, which is used to measure the change of diesel engine throttle scale, and needs to transmit the measured diesel engine throttle scale value to the remote control system in the form of standard voltage signal, and can also be connected to the display table to directly display the diesel engine throttle scale value.

[0003] The existing marine diesel engine throttle scale measuring device mainly consists of throttle scale cam, throttle scale sensor, throttle scale measuring box and connecting cable, specifically as follows Figure 3The throttle scale cam 1 and the throttle scale sensor 2 are installed on the diesel engine, the throttle scale measuring box 3 is installed outside the diesel engine, and the throttle scale measuring box 3 is connected with the throttle scale sensor 2 through a cable; when the diesel engine is running, the speed increasing / decreasing knob of the diesel engine is operated, the speed control signal acts on the speed governor 4 of the diesel engine, then the speed governor 4 controls the change of the fuel supply amount of the diesel engine, at this time, the displacement change (horizontal left or right movement) of the throttle pull rod 5 drives the fuel pump assembly 6 to pump the corresponding fuel into the fuel injector, at the same time, the throttle pull rod 5 drives the throttle scale cam 1 to rotate around the fixed shaft, the throttle scale sensor 2 detects the change of the gap e between the throttle scale cam 1 and the throttle scale sensor 2, and transmits the signal to the throttle scale measuring box 3, the throttle scale measuring box 3 outputs the standard voltage signal 0-10V to the external remote control system through the control system and the internal circuit, or directly connects the display table to display the throttle scale value of the diesel engine; and the above structure, after the diesel engine runs for a period of time, due to the influence of the vibration of the diesel engine itself, the wear of parts and other factors, the gap e between the throttle scale cam 1 and the throttle scale sensor 2 will change slightly, which will cause the deviation of the zero position and the full-scale output signal voltage value of the throttle scale, and the throttle scale displayed on the display table is inconsistent with the value indicated by the mechanical pointer on the diesel engine, so it is necessary to recalibrate the throttle scale measuring box when necessary; as can be seen from the above, the existing marine diesel engine throttle scale measuring device has the following disadvantages: ①The throttle scale cam 1, the fixed shaft and the positioning pin and other parts are matched, the types and quantities of the matched parts are more, and the cost is high; the size tolerance, shape and position tolerance and surface finish of the cam are required to be higher, and the machining difficulty is high; ②The assembly and debugging and maintenance of the gap adjustment between the throttle scale cam 1 and the throttle scale sensor 2 are not convenient, the throttle scale calibration operation is complicated and difficult, and the throttle scale signal needs to be recalibrated when necessary during the later running process of the diesel engine; ③The throttle scale sensor 2 and the throttle scale measuring box 3 are two separate devices, and the two devices need to be connected by using a connecting cable, and the system integration degree is not high; the operating cost, workload and the like of the whole set of equipment are high due to the design and installation structure outside the diesel engine; therefore, it is necessary to improve the existing device in view of the above problems. Practical new type content

[0004] The utility model solves technical problem: provide a kind of based on laser ranging mode's marine diesel engine throttle scale measurement system, using laser ranging technology, with throttle pull rod coaxial arrangement and for detecting the laser ranging optical probe of throttle pull rod axial position variation amount, the control portion of throttle scale value that laser ranging optical probe detection throttle pull rod axial position variation amount information is converted into is installed on the body on the upper end of base, complete to the measurement and display of diesel engine throttle scale, greatly simplify throttle scale measurement structure, reduce structural cost, solve the cost high, structure complex, operation difficult, long production cycle and the problem of unstable measurement precision that the measurement mode of original diesel engine throttle scale measurement device uses cam and throttle scale sensor, bring convenience for diesel engine routine use, with good reliability, maintainability, security, safeguard, testability, environmental applicability, meet the requirement of shipment, and good universality, can be widely applied in different purposes, different model diesel engine, also can be applied in new model development and design, and the design modification of original diesel engine throttle scale measurement.

[0005] The utility model discloses the technical scheme based on laser ranging mode's marine diesel engine throttle scale measurement system, including base, the base upper end is fixed with the body, and with the laser ranging optical probe of throttle pull rod coaxial arrangement is installed on the body, and by laser ranging optical probe to the axial position variation amount of throttle pull rod is detected when diesel engine speed regulation, the display screen is installed on the front wall of the body, and the output of laser ranging optical probe and the input of display screen are connected with the control portion in the body, and by control portion the axial position variation amount information of throttle pull rod that laser ranging optical probe detects is converted into throttle scale value and is shown by display screen.

[0006] Wherein, the body is hollow box structure, be equipped with the button assembly on the front wall of the body and be located below display screen with control portion connection, and button assembly is used for the parameter setting and debugging of system.

[0007] Further, the right side wall of the body is provided with a power socket for connecting with a power supply and supplying power to the system.

[0008] Further, the right side wall of the body is provided with a signal output socket for outputting a standard voltage signal to an external system.

[0009] Further, the base is arranged on the outer side of the right end of the throttle pull rod and can be detachably fixed to the mounting bracket of the diesel engine through the bolts at the four corners.

[0010] The utility model compares with prior art's advantage:

[0011] 1. The technical scheme adopts laser ranging technology, integrates the laser ranging optical probe coaxial with the accelerator pull rod and used for detecting the axial position change amount of the accelerator pull rod, the control part for converting the axial position change amount information of the accelerator pull rod detected by the laser ranging optical probe into an accelerator scale value, and the display screen used for displaying the accelerator scale value on the body of the base upper end, completes the measurement and display of the diesel engine accelerator scale, greatly simplifies the accelerator scale measurement structure, and reduces the structural cost.

[0012] 2. The technical scheme has high measurement precision, higher resolution, and strong anti-interference ability, effectively overcomes the influence of the large vibration and high temperature working environment of the diesel engine, and can be reliably fixed on the diesel engine; the laser ranging optical probe is accurately centered with the accelerator pull rod, so that the measurement result is accurate and reliable.

[0013] 3. The technical scheme has good reliability, maintainability, safety, security, testability, environmental applicability, meets the shipping requirements, has good universality, solves the problems of high cost, complex structure, difficult operation, long production cycle and unstable measurement precision caused by the measurement mode of the original diesel engine accelerator scale measurement device adopting a cam and an accelerator scale sensor, brings convenience for daily use of the diesel engine, and can be widely applied to diesel engines of different purposes and different types, and can also be applied to new model development and design, and design modification of the original diesel engine accelerator scale measurement. BRIEF DESCRIPTION OF DRAWINGS

[0014] Figure 1 It is a structural schematic view of the utility model;

[0015] Figure 2 It is a system block diagram of the utility model;

[0016] Figure 3 It is a structural schematic view of the existing marine diesel engine accelerator scale measurement device. DETAILED DESCRIPTION

[0017] The technical scheme in the embodiments of the utility model will be described below. Figures 1-3 The technical scheme in the embodiments of the utility model is described clearly and completely, obviously, the described embodiments are only part of the embodiments of the utility model, not all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor belong to the protection scope of the utility model.

[0018] It should be noted that, in this article, unless otherwise specified, it is understood that the terms "center", "upper", "lower", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer" and the like indicate the orientation or positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the present application. In addition, the terms "first", "second", "third" and the like are only for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0019] In this article, the terms "include", "contain" or any other variant thereof are intended to cover non-exclusive inclusion, so that the process, method, article or device including a series of elements not only includes those elements, but also includes other elements not explicitly listed or inherent to such process, method, article or device. Without more limitations. The element defined by the statement "includes a..." does not exclude the presence of other identical elements in the process, method, article or device including the element.

[0020] The laser ranging type marine diesel engine throttle scale measurement system, such as Figures 1-3As shown, including the base 7, wherein the base 7 is provided on the right end of the throttle lever 5 outside and can be detachably fixed on the installation support 14 of the diesel engine through the bolts of the four corners; the body 8 is fixed on the upper end of the base 7, and the laser ranging optical probe 9 coaxially arranged with the throttle lever 5 is installed on the body 8, and the axial position change amount of the throttle lever 5 is detected by the laser ranging optical probe 9 during the speed regulation of the diesel engine, the display screen 10 is installed on the front wall of the body 8, and the output end of the laser ranging optical probe 9 and the input end of the display screen 10 are connected with the control part inside the body 8, and the control part converts the axial position change amount information of the throttle lever 5 detected by the laser ranging optical probe 9 into the throttle scale value, which is displayed by the display screen 10; in the above structure, the laser ranging technology is used, the laser ranging optical probe 9 coaxially arranged with the throttle lever 5 and used for detecting the axial position change amount of the throttle lever 5, the control part for converting the axial position change amount information of the throttle lever 5 detected by the laser ranging optical probe 9 into the throttle scale value, and the display screen 10 for displaying the throttle scale value are integrated and installed on the body 8 on the upper end of the base 7, the measurement and display of the throttle scale of the diesel engine are completed, the throttle scale measurement structure is greatly simplified, and the structural cost is reduced; the laser ranging optical probe 9 has high measurement precision, higher resolution, and strong anti-interference ability, effectively overcomes the influence of the large vibration and high temperature working environment on the diesel engine, and can be reliably fixed on the diesel engine; the laser ranging optical probe 9 is accurately centered with the throttle lever 5, so that the measurement result is accurate and reliable.

[0021] The laser ranging method is used to replace the throttle scale sensor in the existing scheme, the laser ranging optical probe 9 and the body 8 with the control part inside are integrated into one device, the measurement of the throttle scale of the diesel engine is completed, and the machine display function is increased, the display screen 10 is arranged on the body 8, the throttle scale value can be displayed in real time, and the operation convenience is improved.

[0022] The laser ranging method is used in the scheme, the working principle is the phase method, that is, the phase difference between the detected emitted light and the emitted light during the propagation in space is used to measure the distance, this method calculates the distance by measuring the phase difference between the emitted laser and the reflected laser, has higher precision and resolution; the throttle lever 5 moves 1mm, and the throttle scale changes 1mm.

[0023] When the diesel engine is running, the speed up / down knob of the diesel engine is operated, the speed control signal acts on the speed regulator of the diesel engine, then the speed regulator controls the change of the fuel supply amount of the diesel engine, at this time the displacement change of the throttle lever 5 is as follows Figure 1The shown arrow direction moves, and drives the fuel injection pump assembly to inject corresponding fuel into the fuel injector; the interval distance L between the accelerator pull rod 5 and the laser ranging optical probe 9 changes, the control part will process a series of signal processing on the signal measured by the laser ranging optical probe 9, and finally output a standard voltage signal with a voltage range of 0-10V, but in use, the laser ranging optical probe 9 needs to be directly opposite to the end of the accelerator pull rod 5. In actual use, the laser ranging optical probe 9 and the end of the accelerator pull rod 5 need to be adjusted to be on the same horizontal line, and the measurement result will be accurate and reliable.

[0024] The body 8 is a hollow box structure, and a key assembly 11 connected with the control part and located below the display screen 10 is arranged on the front wall of the body 8, and the key assembly 11 is used for parameter setting and debugging of the system; specifically, a power socket 12 for connecting with a power supply and supplying power to the system is arranged on the right side wall of the body 8; specifically, a signal output socket 13 for outputting the standard voltage signal to an external system is arranged on the right side wall of the body 8.

[0025] As shown in the figure, Figure 2 The laser ranging optical probe 9 includes optical element one and optical element two, the laser emitted by the emission module is shot into the measured object (the accelerator pull rod 5) through the optical element one, and the reflected light enters the receiving module through the optical element two; the receiving module performs signal preprocessing, improves the quality and reliability of the signal through filtering and noise reduction, and extracts the required measurement information through the signal extraction module; finally, the signal enters the control part (the main controller) to be optimized and processed, and the accelerator scale value is displayed on the display screen 10, and the standard voltage signal (0-10V) is outputted.

[0026] Through the analysis of the movement and change of the structure of the diesel engine parts when the diesel engine throttle changes, the throttle scale cam and fixed shaft structure of the existing scheme are cancelled, a new measurement method and structure are introduced, the diesel engine throttle scale measurement system is simple in structure, the operation and maintenance are improved; the types and quantities of the matched parts are reduced, the production cost is saved, the production preparation period and the part assembly time are reduced; it can meet the application on different models, expand the application field; and provide a basis for the development and research of subsequent new diesel engines.

[0027] The scheme only needs to perform simple zero calibration operation in use, and the method is as follows: manually pull the accelerator pull rod 5, so that the diesel engine is located at the stop position, when the accelerator scale mechanical pointer indicates 0mm, record the distance L between the accelerator pull rod 5 and the laser ranging optical probe 9, input the L value to the control part of the system through the key assembly 11, execute zero calibration, and the corresponding output standard voltage signal is 0V; when the throttle changes, the new distance of the laser ranging optical probe 9 will display the corresponding throttle scale value through operation and display through the display screen 10.

[0028] The controller of the control part adopts STM32 controller, the circuit module in the STM32 controller filters and amplifies the received signal, calculates the measurement result, receives the input of the key assembly 11, outputs the signal and provides the signal source for the display circuit in the display screen 10, and the display screen 10 adopts an LED display screen.

[0029] The technical scheme has good reliability, maintainability, safety, security, testability, environmental applicability, meets the shipping requirements, has good versatility, solves the problems of high cost, complex structure, difficult operation, long production cycle and unstable measurement precision caused by the measurement mode of the original diesel engine throttle scale measurement device adopting a cam and a throttle scale sensor, brings convenience for daily use of the diesel engine, and can be widely applied to diesel engines of different purposes and different types, and can also be applied to new model development and design, and design modification of the original diesel engine throttle scale measurement.

[0030] It is apparent to those skilled in the art that the present application is not limited to the details of the foregoing exemplary embodiments, and that the present application can be implemented in other concrete forms without departing from the spirit or essential characteristics of the present application. Accordingly, no matter from which point of view, the embodiments should be regarded as exemplary and non-limiting, and the scope of the present application is defined by the appended claims rather than the above description, and thus all changes falling within the meaning and range of the equivalent elements of the claims are intended to be embraced in the present application. Any reference signs in the claims should not be regarded as limiting the claims to which they relate.

[0031] In addition, it should be understood that, although the present specification is described in terms of embodiments, not every embodiment contains only one independent technical solution, and the description of the specification is only for the sake of clarity, and those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can be appropriately combined to form other embodiments that those skilled in the art can understand.

Claims

1. A marine diesel engine throttle calibration measurement system based on laser ranging, characterized in that: The system includes a base (7), on which a body (8) is fixed. A laser ranging optical probe (9) coaxially arranged with the throttle lever (5) is mounted on the body (8). When the diesel engine speed is adjusted, the laser ranging optical probe (9) detects the axial position change of the throttle lever (5). A display screen (10) is mounted on the front wall of the body (8). The output end of the laser ranging optical probe (9) and the input end of the display screen (10) are both connected to the control part inside the body (8). The control part converts the axial position change information of the throttle lever (5) detected by the laser ranging optical probe (9) into throttle scale values, which are then displayed on the display screen (10).

2. The marine diesel engine throttle scale measurement system based on laser ranging according to claim 1, characterized in that: The main body (8) has a hollow box structure. The front wall of the main body (8) is provided with a button assembly (11) connected to the control part and located below the display screen (10). The button assembly (11) is used for setting and debugging system parameters.

3. The marine diesel engine throttle scale measurement system based on laser ranging according to claim 2, characterized in that: The right side wall of the main body (8) is provided with a power socket (12) for connecting to the power supply and supplying power to the system.

4. The marine diesel engine throttle scale measurement system based on laser ranging according to claim 3, characterized in that: The right side wall of the main body (8) is provided with a signal output socket (13) for outputting standard voltage signals to an external system.

5. The marine diesel engine throttle scale measurement system based on laser ranging according to claim 1, 2, 3, or 4, characterized in that: The base (7) is located on the outside of the right end of the throttle lever (5) and is detachably fixed to the mounting bracket (14) of the diesel engine by bolts at its four corners.

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