Rapid detector for electromagnetic proportional operating handle

Abstract

The rapid detector comprises an interface module, a voltage detection module, a display module and a power supply module, the power supply module is electrically connected with the voltage detection module and provides power for the voltage detection module and a detected handle, the voltage detection module is electrically connected with the detected operation handle through the interface module, and the display module is electrically connected with the detected operation handle through the display module. Comprising power supply connection and signal connection; the interface module at least comprises a signal interface and a power interface, and the display module is electrically connected with the voltage detection module; the rapid detector also comprises a discharge module, and the discharge module at least comprises a discharge switch and an indicating lamp which are connected in series with the positive and negative electrode lines of the detected signal line. The detector is simple and practical, is convenient to manufacture and use, and solves the inconvenience that the operating handle needs to be detected on a machine after being repaired and maintained.

Description

Technical Field

[0001] The invention relates to the technical field of operating handle detection, and in particular to a rapid detection instrument for an electromagnetic proportional operating handle. Background Art

[0002] Aerial work vehicles are used extensively in shipyards, ports, docks, and large machinery manufacturing and work sites. These aerial work vehicles are generally operated by handles because this type of handle operation is simpler and more convenient for operators.

[0003] The most commonly used aerial operation handles in the current market are electromagnetic proportional operation handles, such as Hall handles. Since aerial operation vehicles are mostly in open air environments such as dock panels or cargo holds, such environments are dusty and rainy, which have a great impact on the electrical characteristics of the handles. In addition, due to the different proportional operation techniques of operators, the size of force and the direction of hand operation habits, the magnet inside the handle will be slightly demagnetized after long-term use, resulting in uneven cutting. For the above reasons, the operating handle often needs to be repaired or replaced, and is a consumable part.

[0004] For large shipyards, there are a large number of electromagnetic proportional operating handles (such as Hall operating handles) returned from repairs and a large number of new Hall operating handles in the warehouse. These handles generally need to be tested on site before use to confirm that the voltage ranges (such as dead voltage and interference voltage, where interference voltage is also called coupling voltage) are normal before they can be provided for installation and use in operating vehicles. This kind of on-site testing is not only inconvenient, but also time-consuming and labor-intensive. Especially if there are unqualified products, there are also great safety hazards in on-site testing. Therefore, the storage and maintenance of on-site electromagnetic proportional operating handles urgently need a simple and convenient detection device. Summary of the invention

[0005] The purpose of the present invention is to provide a portable electromagnetic proportional operating handle rapid detection instrument, so that general equipment maintenance personnel, warehouse managers, and aerial work vehicle operators can simply and conveniently perform rapid detection of the operating handle.

[0006] To achieve the above-mentioned purpose, the present invention is designed to provide a rapid detector for an electromagnetic proportional operating handle, including an operating handle interface module, a voltage detection module, a display module and a power supply module. The power supply module is electrically connected to the voltage detection module to provide power for the voltage detection module and the handle to be tested, which is generally an AC-to-DC +5V power supply. The voltage detection module is electrically connected to the operating handle to be tested through the interface module, which generally includes a power supply connection and a signal connection, that is, the detector power supply module supplies power to the handle to be tested through the interface module, and the handle to be tested feeds back a handle operation signal to the detector voltage detection module through a signal connection with the interface module; the interface module includes at least one signal interface and one power interface, and the display module is electrically connected to the voltage detection module; The rapid detector also includes a discharge module, which includes at least a discharge switch and an indicator light, which are connected in series to the positive and negative lines of the signal line to be tested.

[0007] Furthermore, the display module includes a first display module and a second display module, which are respectively used for single-axis handle detection display and dual-axis handle detection display, or X-axis detection display and Y-axis detection display.

[0008] Furthermore, the voltage detection module includes a first voltage detection module and a second voltage detection module, the first voltage detection module is electrically connected to the first display module, and the second voltage detection module is electrically connected to the second display module, and the two correspond one to one.

[0009] Furthermore, the interface module includes a detection signal interface and a power supply interface.

[0010] Furthermore, the interface module is compatible with the operating handle interface, and different connectors can be designed to meet the external interface requirements of different operating handles.

[0011] Furthermore, the display module includes a liquid crystal display module or at least two 8-segment LED digital tubes.

[0012] Furthermore, the signal connection includes a single-axis handle and a dual-axis handle signal connection, or an X-axis and Y-axis signal connection of an operating handle.

[0013] Furthermore, the rapid detector also includes an operation and analysis unit and at least 3 radio buttons for detection items. The operation and analysis unit is electrically connected to the voltage detection module, the display module and the radio buttons respectively. The radio buttons correspond to dead zone voltage detection, interference voltage detection and limit voltage detection respectively.

[0014] Furthermore, the display module includes a liquid crystal display module or at least six 8-segment LED digital tubes.

[0015] Furthermore, the detector also includes an installation shell, the voltage detection module, display module and power supply module are all arranged inside the shell, the display surface of the display module is exposed in the middle of the upper surface of the shell, the connector of the interface module is led out from one side of the shell, and a power switch, a discharge switch and an indicator light are also arranged on the upper surface or side of the shell.

[0016] The advantages and beneficial effects of the present invention are as follows: the detector is practical and can complete the rapid detection and status confirmation of new operating handles before they are installed on the machine. It can also quickly check and confirm the maintenance effect of the operating handles after maintenance, thereby greatly reducing the workload of on-site actual machine testing of the handles, because on-site testing generally requires high-altitude operations and also affects the operation of other equipment. In particular, if there are unqualified products, on-site testing also poses a great safety hazard. The use of this detector can immediately know the "quality health" information of the inventory handles and maintenance handles, realize the rapid status confirmation of the electromagnetic proportional operating handle products before they are put into storage and / or shipped out of storage, and is conducive to timely discovery and feedback of problems, improving the business skills of the company's equipment maintenance and repair personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a circuit connection principle diagram of the present invention. DETAILED DESCRIPTION

[0018] The specific implementation of the present invention is further described below in conjunction with the accompanying drawings and embodiments. The following embodiments are only used to more clearly illustrate the technical solution of the present invention, and cannot be used to limit the protection scope of the present invention.

[0019] Embodiment 1: like Figure 1 As shown, a rapid detector of an electromagnetic proportional operating handle designed by the present invention includes an operating handle interface module, a voltage detection module, a display module and a power supply module. The power supply module is electrically connected to the voltage detection module to provide power for the voltage detection module and the handle to be tested, which is generally an AC-to-DC +5V power supply. The voltage detection module is electrically connected to the operating handle to be tested through the interface module, and generally includes a power supply connection and a signal connection, that is, the detector power supply module supplies power to the handle to be tested through the interface module, and the handle to be tested feeds back a handle operation signal to the detector voltage detection module through a signal connection with the interface module; the interface module includes at least one signal interface and one power interface, and this embodiment designs two signal interfaces and one power interface, the display module is electrically connected to the voltage detection module, the voltage detection module includes a digital voltmeter or an independent A / D sampling unit, the voltage detection module receives the voltage or current signal of the operating handle to be tested, and the detection result is sent to the display module for display; The rapid detector also includes a discharge module, which includes at least a discharge switch and an indicator light, which are connected in series to the positive and negative lines of the signal line under test. The module plays two roles in the test. On the one hand, when there is a virtual voltage in the detection circuit, the discharge is carried out through the indicator light, and the voltage detection module can more accurately reflect the size of the measured signal. On the other hand, when there is a strong signal voltage, the indicator light will be displayed when the switch is closed.

[0020] The external interface of the operating handle to be tested is connected to the interface of the rapid tester, and the operating handle is shaken, and whether the quality of the handle is qualified can be judged according to the displayed data.

[0021] For Hall handles, this detector can be used to perform the following tests: ① Dead zone voltage detection: when the handle is in the middle position, the theoretical voltage is 2.5V. Generally, the error is no more than 8% (i.e. 2.3~2.7), which is considered normal. Otherwise, the handle is considered abnormal. The X-axis and Y-axis can be detected synchronously. ②Interference voltage detection (or cross-coupling voltage detection). When the handle is turned in one direction, the value in the other direction cannot deviate by 8%. For example, when the X-axis rotates, the displayed value of the Y-axis should generally remain unchanged. At least the change should not exceed 8% of the displayed value before the X-axis rotates, and vice versa. ③ Limit voltage detection: when the handle is moved, the minimum output voltage of both the X-axis and Y-axis cannot be lower than 0.5v, the maximum voltage cannot be higher than 4.5v, and they must not interfere with other action outputs.

[0022] The detector is easy to operate. Connect the operating handle to be tested to the interface module of the detector, turn on the power, shake the operating handle according to the test items, observe and analyze whether the displayed data (i.e., test data) meets the requirements, and the test is completed.

[0023] The design of this detector is very practical for carrying out the above inspection activities for the operating handles returned or purchased in batches. Since the calculation and judgment are not complicated, they can all be carried out manually. There is no need to install and try on site to judge whether it is qualified, and the efficiency of workpiece storage and maintenance is significantly improved.

[0024] Preferably, the display module includes a first display module and a second display module, which are respectively used for single-axis handle detection display and double-axis handle detection display, or X-axis detection display and Y-axis detection display. In particular, the synchronous display of the X-axis and Y-axis is of great significance for the interference voltage detection project, mainly for the usual manual observation, judgment and analysis method, the synchronous display of the two is indispensable. Of course, a single display module can also be used to display in turn, but this method is not intuitive and convenient enough; the voltage detection module is a single voltmeter with one-to-two synchronous sampling, or polling sampling, or manual panel switch switching sampling, which can realize the sampling and display of 2-way terminal signals by a single voltmeter. Of course, 2 independent voltage detection modules can also be designed, corresponding to one signal respectively, but considering the portable requirements of the detector, this embodiment designs a voltage detection module to simultaneously poll and detect 2-way signals, with a polling cycle of 20Hz. Under this cycle, the LED dynamic display can no longer see the interval between them. When detecting a single-axis handle, the connector of the interface module should be adaptively adjusted.

[0025] Preferably, the interface module includes a detection signal interface and a power supply interface, and the signal interface has at least two channels. The present embodiment designs two channels for X-axis and Y-axis signal detection, which is more practical. This design can complete both single-axis handle detection and dual-axis handle detection. Regarding the signal interface, although more interface signals can be designed in essence, such as for simultaneously detecting multiple operating handles, the actual demand for this type of design is not large.

[0026] Preferably, the interface module is compatible with the operating handle interface, and different connectors can be designed to meet the external interface requirements of different operating handles.

[0027] Preferably, the display module includes a liquid crystal display module or at least two 8-segment LED digital tubes. Relatively speaking, the use of 8-segment LED digital tubes for display is low-cost and easy to implement, and is more convenient and practical for the company's self-made portable rapid tester; each display module includes at least two 8-segment LED digital tubes, one of which displays integer digits and one displays decimal digits; since LED display is low-cost, the first and second display modules in this example each have 4 8-segment LED digital tubes, of which the integer part displays 2 digits and the decimal part displays 2 digits.

[0028] Preferably, the signal connection includes a single-axis handle and a dual-axis handle signal connection, or an X-axis and Y-axis signal connection of an operating handle.

[0029] Preferably, the detector also includes an installation shell, the voltage detection module, display module and power supply module are all arranged inside the shell, the display surface of the display module is exposed in the middle of the upper surface of the shell, the connector of the interface module is led out from one side of the shell, and a power switch, a discharge switch and an indicator light are also arranged on the upper surface or side of the shell.

[0030] Embodiment 2: The difference from Example 1 is that the voltage detection module described in this embodiment includes a first voltage detection module and a second voltage detection module, the first voltage detection module is electrically connected to the first display module, and the second voltage detection module is electrically connected to the second display module, and the two correspond one to one.

[0031] Embodiment 3: The difference from Example 1 is that the rapid tester further includes an operation and analysis unit and at least three test item radio buttons, the operation and analysis unit is electrically connected to the voltage detection module, the display module and the radio buttons respectively, and the radio buttons correspond to dead zone voltage detection, interference voltage detection and limit voltage detection respectively. The operation and analysis unit determines the detection item according to the state of the radio button, reads the detection voltage, and gives and displays the conclusion of whether the tested operating handle is qualified according to the established detection rules, such as the rules of different detection items such as dead zone voltage detection, interference voltage detection and limit voltage detection in Example 1. If it is unqualified, the unqualified item is displayed. In this embodiment, although it is not necessary to design radio buttons, for the detector designed with an operation and analysis unit, if the detection status information is missing, the role of the operation and analysis unit is of little significance. Although other means such as video analysis can also be used to obtain the detection status information, the investment is too large and it is not worth it for portable detection. By designing radio buttons, although the operator's test operation requirements are slightly increased, the detector can give an intuitive detection conclusion without manual calculation and analysis, and the increased cost is not high, because the calculation and analysis requirements here are very low and there is no large-scale computing demand; the radio button states are mutually exclusive, and only one button state is valid at the same time. Finished hardware (generally set on the surface of the detector housing) can be used, or a touch screen soft button can be designed.

[0032] When using the detector, you should first set the test item of the radio button, shake the operating handle according to the requirements of the test item, and read the test result directly from the display module.

[0033] Preferably, the display module includes a liquid crystal display module or at least 6 8-segment LED digital tubes. The display module of this embodiment includes a first display module and a second display module, each display module is provided with 6 8-segment LEDs, wherein the first 2 display the fault state, the middle 2 display the 2-digit integer part, and the last 2 display the 2-digit decimal part, and the fault state information is derived from the operation analysis unit, and is determined according to the detection rule as in Embodiment 1.

[0034] The core of the present invention is to extract the so-called "actual use effect" which is essentially "whether the output voltage of the operating handle is normal under different states" from the process of actually using the machine to test the actual use effect. Therefore, the voltage detection module and the additional power supply are directly used. After reasonable connection, the output voltage of the handle under different shaking states is measured to see whether it is within the theoretical value range, so that it is very convenient to judge whether the handle quality state is qualified. At the same time, by reasonably designing the discharge module, the detector is free from the interference of virtual voltage or static electricity, and the detection result is more reliable.

[0035] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, without departing from the technical principles of the present invention, several improvements and modifications can be made. These improvements and modifications should also be regarded as the protection scope of the present invention, such as adding some peripheral safety circuits, using other display methods or power supply methods, and the voltage detection module uses a customized A / D sampling chip, etc.

Claims

1. A rapid detector for an electromagnetic proportional operating handle, characterized in that: The rapid detector includes an interface module, a voltage detection module, a display module and a power supply module. The power supply module is electrically connected to the voltage detection module to provide power to the voltage detection module and the handle to be tested. The voltage detection module is electrically connected to the operating handle to be tested through the interface module, including a power supply connection and a signal connection; the interface module includes at least one signal interface and one power supply interface, and the display module is electrically connected to the voltage detection module; The rapid detector also includes a discharge module, which includes at least a discharge switch and an indicator light, which are connected in series to the positive and negative lines of the signal line to be tested.

2. The rapid detector of electromagnetic proportional operating handle according to claim 1, characterized in that: The display module includes a first display module and a second display module, which are respectively used for single-axis handle detection display and dual-axis handle detection display, or X-axis detection display and Y-axis detection display.

3. The rapid detector of electromagnetic proportional operating handle according to claim 2, characterized in that: The voltage detection module includes a first voltage detection module and a second voltage detection module. The first voltage detection module is electrically connected to the first display module, and the second voltage detection module is electrically connected to the second display module.

4. The rapid detector of electromagnetic proportional operating handle according to claim 1, characterized in that: The interface module includes a signal interface and a power interface.

5. The rapid detector of electromagnetic proportional operating handle according to claim 1, characterized in that: The interface module is compatible with the operating handle interface.

6. The rapid detector of electromagnetic proportional operating handle according to claim 1, characterized in that: The display module includes a liquid crystal display module or at least two 8-segment LED digital tubes.

7. The rapid detector of electromagnetic proportional operating handle according to claim 1, characterized in that: The signal connection includes a single-axis handle and a dual-axis handle signal connection, or an X-axis and Y-axis signal connection of an operating handle.

8. The rapid detector of electromagnetic proportional operating handle according to claim 1, characterized in that: The rapid detector also includes an operation and analysis unit and at least three radio buttons for detection items. The operation and analysis unit is electrically connected to the voltage detection module, the display module and the radio buttons respectively. The radio buttons correspond to dead zone voltage detection, interference voltage detection and limit voltage detection respectively.

9. The rapid detector of electromagnetic proportional operating handle according to claim 8, characterized in that: The display module includes a liquid crystal display module or at least six 8-segment LED digital tubes.

10. A rapid detector for electromagnetic proportional operating handles according to any one of claims 1 to 9, characterized in that: The detector also includes an installation shell, the voltage detection module, display module and power supply module are all arranged inside the shell, the display surface of the display module is exposed on the upper surface of the shell, the connector of the interface module is led out from one side of the shell, and a power switch, a discharge switch and an indicator light are also arranged on the upper surface or side of the shell.

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