CN219266471U

CN219266471U - Fault monitoring system of switch type signal acquisition circuit and engineering machinery

Info

Publication number: CN219266471U
Application number: CN202320084283.7U
Authority: CN
Inventors: 蒋可; 胡超; 王勇; 马雪; 王峰; 孟铖; 李瑞浩
Original assignee: Xuzhou XCMG Mining Machinery Co Ltd
Current assignee: Xuzhou XCMG Mining Machinery Co Ltd
Priority date: 2023-01-29
Filing date: 2023-01-29
Publication date: 2023-06-27
Anticipated expiration: 2033-01-29

Abstract

The utility model discloses a fault monitoring system of a switch type signal acquisition circuit and engineering machinery, comprising a switch element, an electronic control module and a monitor; the normally open contact of the switching element is connected to a first signal source port of the electronic control module; the normally closed contact of the switching element is connected to a second signal source port of the electronic control module; the signal output of the switching element is connected to a signal detection port of the electronic control module; the monitor is connected with the electronic control module, the electronic control module processes the signals collected from the electronic control module, analyzes the state of the switching element and the circuit fault, and sends fault information to the monitor for fault warning. The utility model can effectively monitor the state of the equipment and quickly locate the fault point, thereby improving the maintenance efficiency.

Description

Fault monitoring system of switch type signal acquisition circuit and engineering machinery

Technical Field

The utility model relates to the field of excavators, in particular to a fault monitoring system of a switch type signal acquisition circuit.

Background

In excavator electrical systems, there are a variety of signal acquisition circuits, among which there are a large number of switch-type signal acquisition circuits. Such as hydraulic oil level warning, oil pressure warning, air filtration blocking warning, etc.

Fig. 1 schematically shows a switch-type signal acquisition circuit in the prior art, for which, when a circuit is broken or short-circuited, a detection failure or misoperation is caused, equipment cannot make early warning, and the difficulty of fault removal is high. There is therefore a need for a fault monitoring system for a switch-mode signal acquisition circuit that addresses this technical problem.

Disclosure of Invention

According to the defects of the prior art, the utility model provides a fault monitoring system of a switch type signal acquisition circuit, and an electronic control module judges the switch state according to the voltage value of an input signal, so that the fault monitoring of the switch type signal acquisition circuit is realized, the detection failure caused by circuit short circuit or open circuit can be effectively avoided, and the fault point can be rapidly positioned.

The utility model is realized according to the following technical scheme:

the first aspect of the utility model discloses a fault monitoring system of a switch type signal acquisition circuit, which comprises a switch element, an electronic control module and a monitor; the normally open contact of the switching element is connected to a first signal source port of the electronic control module; the normally closed contact of the switching element is connected to a second signal source port of the electronic control module; the signal output of the switching element is connected to a signal detection port of the electronic control module; the monitor is connected with the electronic control module, the electronic control module processes the signals collected from the electronic control module, analyzes the state of the switching element and the circuit fault, and sends fault information to the monitor for fault warning.

In some embodiments, the electronic control module is configured with a voltage source, the normally open contact of the switching element is connected to a first voltage source port of the electronic control module, and the normally closed contact of the switching element is connected to a second voltage source port of the electronic control module; the signal output of the switching element is connected to a voltage detection port of the electronic control module.

In some embodiments, the voltage values of the first voltage source port and the second voltage source port in the electronic control module are different.

In some embodiments, the voltage value of the first voltage source port is 10V.

In some embodiments, the voltage value of the second voltage source port is 5V.

In some embodiments, a display screen is arranged in the monitor, and the electronic control module sends fault information to the monitor for display.

In some embodiments, a warning device is arranged in the monitor, and the electronic control module sends fault information to the monitor for prompting.

In some embodiments, the warning device is formed of a plurality of warning lights of different colors, each for different fault information.

The second aspect of the utility model discloses engineering machinery, and a fault monitoring system provided with the switch type signal acquisition circuit.

In some embodiments, the work machine includes an excavator.

The utility model has the beneficial effects that:

the fault monitoring system of the switch type signal acquisition circuit provided by the utility model can distinguish the states of non-triggering, short circuit and open circuit of the signal acquisition circuit. The electronic control module judges the current signal acquisition circuit state according to the detected different voltage values, so that the circuit fault can be monitored while the signal is acquired, and related alarm information is sent to the monitor to inform an operator to perform related treatment, thereby avoiding loss caused by failure or misoperation of the signal acquisition, and simultaneously, the fault point can be rapidly positioned, and the maintenance efficiency is improved.

Drawings

The accompanying drawings, which are included to provide a further understanding of the utility model and are incorporated in and constitute a part of this specification, illustrate embodiments of the utility model and together with the description serve to explain the utility model. It is evident that the drawings in the following description are only examples, from which other drawings can be obtained by a person skilled in the art without the inventive effort.

In the drawings:

FIG. 1 is a schematic diagram of a prior art switching signal acquisition circuit;

fig. 2 is an equivalent circuit diagram of a fault monitoring system of the switch type signal acquisition circuit of the present utility model.

It should be noted that these drawings and the written description are not intended to limit the scope of the inventive concept in any way, but to illustrate the inventive concept to those skilled in the art by referring to the specific embodiments.

Description of the embodiments

For the purpose of making the objects, technical solutions and advantages of the embodiments of the present utility model more apparent, the technical solutions in the embodiments will be clearly and completely described with reference to the accompanying drawings in the embodiments of the present utility model, and the following embodiments are used to illustrate the present utility model, but are not intended to limit the scope of the present utility model.

In the description of the present utility model, it should be noted that the directions or positional relationships indicated by the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer", etc. are based on the directions or positional relationships shown in the drawings, are merely for convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.

In the description of the present utility model, it should be noted that, unless explicitly specified and limited otherwise, the terms "mounted," "connected," and "connected" are to be construed broadly, and may be either fixedly connected, detachably connected, or integrally connected, for example; can be mechanically or electrically connected; can be directly connected or indirectly connected through an intermediate medium. The specific meaning of the above terms in the present utility model will be understood in specific cases by those of ordinary skill in the art.

Fig. 1 shows a prior art switch-type signal acquisition circuit, in which the switching element is directly connected to the switch input detection port of the electronic control module. The electronic control module cannot distinguish between a circuit breaking fault and a non-triggered state of the switching element. When the circuit breaks down and even if the switching element is in a trigger state, the electronic control module cannot detect the trigger signal, so that detection failure is caused. Moreover, because the failure of the function detection without fault monitoring cannot be detected, the detection failure of some key information may cause significant loss.

The electronic control module can not distinguish between a short circuit fault and the triggering state of the switching element. When the circuit has a broken circuit fault, false alarm or false action can occur, so that the function of the equipment is malfunctioning and even can not normally operate.

Fig. 2 shows an equivalent circuit diagram of the fault monitoring system of the switch-mode signal acquisition circuit of the present utility model. The fault monitoring system of the switch type signal acquisition circuit comprises an electronic control module 1, a switch element 2 and a monitor 3. The normally open contact of the switching element 2 is connected to the 10V power supply port of the electronic control module 1. The normally closed contact of the switching element 2 is connected to the 5V power supply port of the electronic control module 1. The output of the switching element 2 is connected to a voltage detection port of the electronic control module. The electronic control module 1 processes the collected voltage signals, analyzes the state of the switching element 2 and circuit faults, and sends relevant alarm information to the monitor 3 for fault warning.

The working principle is as follows: the normally open contact of the switching element 2 is connected to the 10V power supply port of the electronic control module 1, the normally closed contact of the switching element 2 is connected to the 5V power supply port of the electronic control module 1, and the output of the switching element 2 is connected to the voltage detection port of the electronic control module 1. The normally closed contact of the switching element 2 is in an on state when the switching element 2 is not triggered. At this time, the electronic control module 1 may detect the 5V voltage through the voltage detection port. When the switching element 2 is in the triggered state, the normally open contact of the switching element 2 is in the on state, and the electronic control module 1 can detect a voltage of 10V through the voltage detection port. When the circuit is in an open state, the electronic control module 1 cannot detect the voltage through the voltage detection port. When the circuit is in a short circuit state, the electronic control module 1 detects the system voltage or the ground voltage through the voltage detection port. The electronic control module 1 judges the triggering state and the circuit state of the current switching element 2 according to the detection result, thereby realizing fault monitoring of the switching type signal acquisition circuit.

In summary, the fault monitoring system adopting the switch type signal acquisition circuit provided by the utility model distinguishes the states of non-triggering, short circuit and open circuit of the signal acquisition circuit. The electronic control module judges the current signal acquisition circuit state according to the detected different voltage values, so that the circuit fault can be monitored while the signal is acquired, and related alarm information is sent to the monitor to inform an operator to perform related treatment, thereby avoiding loss caused by failure or misoperation of the signal acquisition, and simultaneously, the fault point can be rapidly positioned, and the maintenance efficiency is improved.

The electronic control module is also called as a "travelling computer", "vehicle-mounted computer" or the like, and is a dedicated microcomputer controller in terms of use. It is composed of microprocessor (CPU), memory (ROM, RAM), input/output (I/O), D/A converter (A/D), driver, etc. The electronic control module used in some embodiments is a boscalid BODAS RC 30 series controller.

The switching element refers to an electronic element that may be an open circuit, interrupting a current flow, or flowing it to other circuits, and in some embodiments is a fine electronic LL-01 series level switch used.

The monitor mainly realizes the display of parameters of the whole machine, such as engine speed, water temperature, related pressure and fault alarm, and is used as an information interaction platform for operators in control and display, and in some embodiments, a Hertmann ICP6900 series electronic monitor is used.

In the description provided herein, numerous specific details are set forth. However, it is understood that embodiments of the utility model may be practiced without these specific details. In some instances, well-known methods, structures and techniques have not been shown in detail in order not to obscure an understanding of this description.

Furthermore, those skilled in the art will appreciate that while some embodiments described herein include some features contained in other embodiments, but not others, combinations of features of different embodiments are equally meant to be within the scope of the utility model and form different embodiments. For example, in the above embodiments, those skilled in the art can use the above embodiments in combination according to known technical solutions and technical problems to be solved by the present application.

The foregoing description is only illustrative of the preferred embodiment of the present utility model, and is not to be construed as limiting the utility model, but is to be construed as limiting the utility model to any simple modification, equivalent variation and variation of the above embodiments according to the technical matter of the present utility model without departing from the scope of the utility model.

Claims

1. A fault monitoring system of a switch type signal acquisition circuit is characterized in that:

the device comprises a switching element, an electronic control module and a monitor;

the normally open contact of the switching element is connected to a first signal source port of the electronic control module; the normally closed contact of the switching element is connected to a second signal source port of the electronic control module; the signal output of the switching element is connected to a signal detection port of the electronic control module;

the monitor is connected with the electronic control module, the electronic control module processes the signals collected from the electronic control module, analyzes the state of the switching element and the circuit fault, and sends fault information to the monitor for fault warning.

2. The fault monitoring system of a switch-mode signal acquisition circuit of claim 1, wherein:

the electronic control module is provided with a voltage source, a normally open contact of the switching element is connected to a first voltage source port of the electronic control module, and a normally closed contact of the switching element is connected to a second voltage source port of the electronic control module; the signal output of the switching element is connected to a voltage detection port of the electronic control module.

3. The fault monitoring system of a switch-mode signal acquisition circuit of claim 2, wherein:

the voltage values of the first voltage source port and the second voltage source port in the electronic control module are different.

4. A fault monitoring system for a switch-mode signal acquisition circuit according to claim 3, wherein:

the voltage value of the first voltage source port is 10V.

5. A fault monitoring system for a switch-mode signal acquisition circuit according to claim 3, wherein:

the voltage value of the second voltage source port is 5V.

6. The fault monitoring system of a switch-mode signal acquisition circuit of claim 1, wherein:

the monitor is internally provided with a display screen, and the electronic control module sends fault information to the monitor for display.

7. The fault monitoring system of a switch-mode signal acquisition circuit of claim 1, wherein:

the monitor is internally provided with a warning device, and the electronic control module sends fault information to the monitor for prompting.

8. The fault monitoring system of a switch-mode signal acquisition circuit of claim 7, wherein:

the warning device is composed of a plurality of warning lamps with different colors, and each warning lamp is used for different fault information.

9. An engineering machine, characterized in that:

a fault monitoring system incorporating a switch-mode signal acquisition circuit as claimed in any one of claims 1 to 8.

10. A working machine as claimed in claim 9, wherein:

the work machine includes an excavator.