CN116953589A - Full-automatic detection system for performance of mining start-stop sensor - Google Patents
Full-automatic detection system for performance of mining start-stop sensor Download PDFInfo
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- CN116953589A CN116953589A CN202310958249.2A CN202310958249A CN116953589A CN 116953589 A CN116953589 A CN 116953589A CN 202310958249 A CN202310958249 A CN 202310958249A CN 116953589 A CN116953589 A CN 116953589A
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Abstract
The invention relates to the technical field of detection of mining sensors, in particular to a full-automatic detection system for the performance of a mining start-stop sensor, which comprises an input power supply, an isolating switch, a control main board circuit, a solid-state relay, a voltage regulator, a load cable and a cable load current detection device, wherein the control main board circuit comprises a signal detection circuit, an equipment working voltage and current sampling circuit and a timing display circuit; the input power supply is connected with the isolating switch, the isolating switch is connected with the solid-state relay, the solid-state relay is connected with the voltage regulator, the voltage regulator is connected with the load cable, the load cable is provided with the cable load current detection device, and the control main board circuit is connected between the isolating switch and the solid-state relay. The full-automatic detection system for the performance of the mining start-stop sensor can automatically test various performances of the start-stop sensor, and has the advantages of high efficiency, good accuracy, low cost, convenient maintenance and good expansibility.
Description
Technical Field
The invention relates to the technical field of detection of mining sensors, in particular to a full-automatic detection system for the performance of a mining start-stop sensor.
Background
The start-stop sensor is mainly used for monitoring the start-stop state of underground electromechanical equipment (such as a coal mining machine, a conveyor, a fan and the like) of a coal mine, converting detected equipment start-stop state signals into switch signals or RS485/CAN bus protocol signals which CAN be identified by a monitoring substation and reporting the switch signals or the RS485/CAN bus protocol signals to a monitoring system, and realizing real-time monitoring of all underground electrical equipment start-stop states on the ground.
The on-off sensor indirectly measures the operating state of the device by measuring the magnetic field. The on/off state of the device can be identified by detecting the presence or absence of a magnetic field around the cable, i.e., detecting the presence or absence of current passing through the cable.
The on-off sensor generally uses a magnetic sensor, a hall sensor, a capacitance sensor, or the like. The traditional on-off sensor detection tool mainly simulates the mine use environment, connects the on-off sensor on a cable, checks the response time of the sensor manually by pinching a meter, measures the performance parameters of the sensor through a universal meter, and adjusts the induced current through a sliding rheostat, so that the on-off sensor detection tool has become an indispensable component in coal mine equipment due to simple working principle and easy installation and maintenance.
However, at present, there is no unified detection flow and method, most mechanisms only can manually measure and record results in steps when detecting sensors, the detection results are not very accurate due to the reasons of great influence of human factors, small repetition times, inconvenient data tracing and the like, and moreover, the detection projects are numerous, the steps are complex, the repeatability is high, the human resources are wasted, and the flexibility is lacking.
Disclosure of Invention
The invention aims to solve the technical problems that: in order to solve the problems that in the prior art, multiple items are detected manually in detection of an on-off sensor, the steps are complex, the time consumption is high, the test result is greatly influenced by human, and the flexibility is lacked and the safety is low. The invention provides a full-automatic detection system for the performance of a mining start-stop sensor, which can automatically test various performances of the start-stop sensor, and has the advantages of high efficiency, good accuracy, low cost, convenient maintenance and good expansibility. The technical scheme adopted for solving the technical problems is as follows: a mining start-stop sensor performance full-automatic detection system comprises:
the device comprises an input power supply, an isolating switch, a control main board circuit, a solid-state relay, a voltage regulator, a load cable and a cable load current detection device, wherein the control main board circuit comprises a signal detection circuit, an equipment working voltage and current sampling circuit and a timing display circuit;
the input power supply is connected with the isolating switch, the isolating switch is connected with the solid-state relay, the solid-state relay is connected with the voltage regulator, the voltage regulator is connected with the load cable, the load cable is provided with the cable load current detection device, and the control main board circuit is connected between the isolating switch and the solid-state relay.
Further, the control main board circuit is also sequentially connected with a normally closed switch, a manual switch, an overcurrent switch, a temperature switch and a signal display lamp.
Further, the working voltage and current sampling circuit of the equipment is collected by the singlechip through circuit voltage division or amplification, and is calculated and displayed through the singlechip.
Further, the input power supply is an AC380V three-phase power supply.
Further, the load cable is a three-phase cable, each phase of cable is connected with a cable load current detection device, and the tail ends of the three-phase cables are in short circuit.
Further, the cable load current detection device comprises a transformer arranged on a cable, the transformer is connected with the digital display meter through a protection resistor, and the other end of the digital display meter is connected with the transformer.
Further, the full-automatic detection system for the performance of the mining start-stop sensor further comprises a transformer, and the transformer is arranged between the voltage regulator and the load cable.
The full-automatic detection system for the performance of the mining start-stop sensor has the advantages that after the start-stop sensor is connected, various scenes can be simulated, the working state, the installation position, the adjustment angle and the like of the sensor are detected in all directions, a plurality of performance parameters of the sensor are detected through one-time test, the performance parameters are displayed on the detection system, and detection records are stored;
by adopting an automatic test technology, the test result and abnormal information of the sensor under different test environments can be recorded in real time, the test data can be counted, analyzed and visually displayed, the reliability and the effectiveness of the test data are improved, the high-efficiency and accurate test and analysis of the sensor performance are realized, and the test efficiency and the test quality are improved;
data generated by the sensor is collected, and analyzed and processed. Through technologies such as big data analysis and machine learning, the performance characteristics and the production quality of the sensor can be deeply solved, the basis is provided for improving the product quality, faults can be intelligently detected and timely alarmed, the workload of maintenance personnel is reduced, and the maintenance efficiency and accuracy are improved;
the transformer is used for reducing the voltage, the rear end generates working current through the short-circuit cable, no additional load is needed, the internal structure is clear, the device is simple, compared with the old-fashioned detection tool, the load instrument is used as the load to generate current, the cost is low, and the maintenance is convenient;
the automatic detection system can be customized according to the requirements of users, can adapt to the detection of on-off sensors of different types, can expand the detection of sensors of other types and specifications, and has good expandability.
Drawings
The invention will be further described with reference to the drawings and examples.
FIG. 1 is a schematic diagram of a fully automatic detection system for the performance of a mining start-stop sensor according to the present invention;
FIG. 2 is a schematic diagram of on-off sensor connections of the full automatic mining on-off sensor performance detection system of the present invention;
FIG. 3 is a schematic diagram of an equipment operating voltage current sampling circuit of the mining on-off sensor performance full-automatic detection system of the present invention;
fig. 4 is a detection flow chart of the full-automatic detection system for the performance of the mining start-stop sensor.
Reference numerals
1. Inputting a power supply; 2. an isolating switch; 3. a control main board circuit; 31. a normally closed switch; 32. a manual switch; 33. an overcurrent switch; 34. a temperature switch; 25. a signal display lamp; 4. a solid state relay; 5. a voltage regulator; 6. a load cable; 7. a cable load current detection device; 71. a transformer; 72. a protection resistor; 73. a digital display table; 8. a transformer.
Detailed Description
The invention will now be described in further detail with reference to the accompanying drawings. The drawings are simplified schematic representations which merely illustrate the basic structure of the invention and therefore show only the structures which are relevant to the invention.
In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention. Furthermore, features defining "first", "second" may include one or more such features, either explicitly or implicitly. In the description of the present invention, unless otherwise indicated, the meaning of "a plurality" is two or more.
In the description of the present invention, 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, and can be communication between two elements. The specific meaning of the above terms in the present invention will be understood in specific cases by those of ordinary skill in the art.
As shown in fig. 1 to 4, which are preferred embodiments of the present invention, a fully automatic detection system for performance of a mining on-off sensor comprises:
input power source 1, isolator 2, control main board circuit 3, solid state relay 4, voltage regulator 5, load cable 6, cable load current detection device 7 and transformer 8.
The input power supply 1 is a 380V power supply; the isolating switch 2 is a 10A air switch and is in leakage protection; the control main board circuit 3 is a singlechip control board taking lpc1788 as a core; the solid state relay 4 is a three-phase solid state relay with load voltage of 40-530VAC, load current of 25A and response time of 10 ms; the voltage regulator 5 is a three-phase alternating current voltage regulator outputting 0-430VAC and 15 KVA; the load cable 6 is a mining power cable with a polyvinyl chloride insulating polyvinyl chloride sheath for a coal mine; the cable load current detection device 7 is three 0-40A current transducers; the transformer 8 is a transformer with 380V to 5V and power of 260 VA.
The control main board circuit 3 comprises a signal detection circuit, an equipment working voltage and current sampling circuit and a timing display circuit, voltage signals are collected through an ADC function of the single-chip microcomputer LPC1788, partial pressure and amplification processing are carried out on the signals through the chip LM358, a microcomputer timer TCSY-6S (calibrated) is used as a timer, the input power supply 1 is connected with the isolating switch 2, the isolating switch 2 is connected with the solid-state relay 4, the solid-state relay 4 is connected with the voltage regulator 5, the voltage regulator 5 is connected with the load cable 6, the load cable 6 is provided with the cable load current detection device 7, and the control main board circuit 3 is connected between the isolating switch 2 and the solid-state relay 4.
The input power supply 1 is used for supplying power, the isolating switch 2 is used for preventing leakage and short circuit, the solid state relay 4 is used for controlling the on-off of a load circuit, the voltage regulator 5 is used for regulating the working current of the load cable 6, the control main board circuit 3 is connected with the solid state relay 4, the cable load current detection device 7, the device working voltage and current sampling circuit and the timing display circuit, wherein the cable load current detection device 7 is used for detecting the actual working current of the load cable, the signal detection circuit is used for receiving a sensor signal so as to calculate the response time, the device working voltage and current sampling circuit is used for collecting the working voltage and the working current, and the working voltage and the working current are collected, calculated and displayed by the singlechip, the specific sampling circuit is shown in fig. 3, the timing and the display are used for displaying whether the response time of the sensor meets the requirement in MT/T647-1997 is not more than 1s, and whether the current working voltage and the working current of the working voltage of the sensor meets the product regulation standard.
The input power supply 1 is 380V three-phase alternating current, the power is supplied by the input power supply, the solid state relay 4 controls the circuit to conduct to generate current through the protection of the isolating switch 2, the voltage regulator 5 is connected at the rear end, the voltage is regulated through the voltage regulator 5 to change the current at the rear end, the transformer 8 is connected at the rear end of the voltage regulator 5, the large voltage is converted into the small voltage, and finally the load cable is short-circuited to generate the large current.
Before the detection starts, the on-off sensor to be detected needs to be connected to the load cable, and the power supply and the communication cable of the on-off sensor are connected to a communication interface reserved on the full-automatic detection system, as shown in fig. 2.
When automatic detection is started, the action current is regulated according to the product standard, the test is started when a start key is pressed, a device start-stop sensor senses the cable working current and then sends a signal, a signal detection circuit in the control main board circuit 3 receives the signal of the start-stop sensor, and a timing display circuit stops timing and displays.
The control main board circuit 3 of the invention also comprises a working voltage and current sampling circuit, when the equipment start-stop sensor is connected to the invention, the working current of the sensor and the technical index of the working voltage are recorded at regular time for display.
The control main board circuit 3 is further sequentially connected with a normally closed switch 31, a manual switch 32, an overcurrent switch 33, a temperature switch 34 and a signal display lamp 25, the circuit is operated by pressing the manual switch 32, the overcurrent switch 33 is further arranged, when the current in the circuit is overlarge, the circuit is automatically disconnected, the temperature switch 34 is arranged, when the temperature in the circuit is overlarge, the circuit is automatically disconnected, equipment such as leakage protection is arranged in the circuit, an interface is grounded, the cable is internally coated with insulating paint, and multiple measures are used for protecting the safety of a user and ensuring the safety production.
As shown in fig. 3, the working voltage and current sampling circuit of the device is collected by the singlechip through circuit voltage division or amplification, and is calculated and displayed through the singlechip.
The load cable 6 is a three-phase cable, each phase of cable is connected with a cable load current detection device 7, the tail ends of the three-phase cables are in short circuit, the cable load current detection device 7 comprises a transformer 71 arranged on the cable, the transformer 71 is connected with a digital display meter 73 through a protection resistor 72, and the other end of the digital display meter 73 is connected with the transformer 71.
The old equipment start-stop detection tool adjusts actual working current on a cable by using a load instrument, current is detected by connecting a universal meter in series in the cable in real time, the whole tool is large in size, high in cost and complex in maintenance due to the fact that the whole tool is large in size and complex in maintenance, the operation is complicated in the use process, and short-distance operation of detection personnel is dangerous. According to the invention, after 380V high voltage is regulated by the voltage regulator, the voltage is converted into 5V low voltage by the transformer, and finally, a low-voltage high-current simulation test environment is generated in a cable short circuit mode, when the test is started, the main board is controlled to conduct a circuit, a large current is generated on the cable for testing, and after the sensor acts or after a certain time, the system is immediately powered off to ensure safety.
In summary, the full-automatic detection system for the performance of the mining start-stop sensor of the invention can complete a series of detection by only connecting the start-stop sensor into the automatic detection system through an automatic detection technology, as shown in fig. 4, through a key, not only can solve the automatic test of indexes in MT/T647-1997, but also can synchronously detect various product parameters during use. The method solves the problems that when the original detection mechanism and the manufacturer test the related technical indexes by using the equipment start-stop sensor, the manual measurement error exists, the precision is low, the detection result has extremely large uncertainty, and the requirement of the standard cannot be met; the automatic test system has the characteristics of reliability, high measurement precision, convenience in control, automatic result memory, convenience in data tracing and the like.
With the above-described preferred embodiments according to the present invention as an illustration, the above-described descriptions can be used by persons skilled in the relevant art to make various changes and modifications without departing from the scope of the technical idea of the present invention. The technical scope of the present invention is not limited to the description, but must be determined as the scope of the claims.
Claims (7)
1. A mining start-stop sensor performance full-automatic detection system is characterized by comprising:
the power supply comprises an input power supply (1), an isolating switch (2), a control main board circuit (3), a solid-state relay (4), a voltage regulator (5), a load cable (6) and a cable load current detection device (7), wherein the control main board circuit (3) comprises a signal detection circuit, an equipment working voltage current sampling circuit and a timing display circuit;
the input power supply (1) is connected with the isolating switch (2), the isolating switch (2) is connected with the solid state relay (4), the solid state relay (4) is connected with the voltage regulator (5), the voltage regulator (5) is connected with the load cable (6), the load cable (6) is provided with the cable load current detection device (7), and the control main board circuit (3) is connected between the isolating switch (2) and the solid state relay (4).
2. The mining on-off sensor performance full-automatic detection system according to claim 1, wherein the control main board circuit (3) is further connected with a normally closed switch (31), a manual switch (32), an overcurrent switch (33), a temperature switch (34) and a signal display lamp (25) in sequence.
3. The mining on-off sensor performance full-automatic detection system according to claim 1, wherein the equipment working voltage and current sampling circuit is collected by a single chip microcomputer through circuit voltage division or amplification, and is calculated and displayed through the single chip microcomputer.
4. The mining on-off sensor performance full-automatic detection system according to claim 1, wherein the input power source (1) is an AC380V three-phase power source.
5. The mining on-off sensor performance full-automatic detection system according to claim 4, wherein the load cables (6) are three-phase cables, each phase of cables is connected with a cable load current detection device (7), and the tail ends of the three-phase cables are short-circuited.
6. The mining on-off sensor performance full-automatic detection system according to claim 5, wherein the cable load current detection device (7) comprises a mutual inductor (71) arranged on a cable, the mutual inductor (71) is connected with a digital display meter (73) through a protection resistor (72), and the other end of the digital display meter (73) is connected with the mutual inductor (71).
7. The mining on-off sensor performance full-automatic detection system according to claim 1, further comprising a transformer (8), the transformer (8) being arranged between the voltage regulator (5) and the load cable (6).
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| Application Number | Priority Date | Filing Date | Title |
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| CN202310958249.2A CN116953589A (en) | 2023-07-31 | 2023-07-31 | Full-automatic detection system for performance of mining start-stop sensor |
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| CN202310958249.2A CN116953589A (en) | 2023-07-31 | 2023-07-31 | Full-automatic detection system for performance of mining start-stop sensor |
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| CN116953589A true CN116953589A (en) | 2023-10-27 |
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| CN202310958249.2A Pending CN116953589A (en) | 2023-07-31 | 2023-07-31 | Full-automatic detection system for performance of mining start-stop sensor |
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