Multi-channel temperature acquisition device for monitoring temperature of speed reducer

Abstract

The utility model discloses a multi-channel temperature acquisition device for monitoring the temperature of a speed reducer. The multi-channel temperature acquisition device comprises a shell, an audible and visual alarm and a plurality of temperature sensors, a main control board and a power panel are arranged in the shell; the power panel is respectively connected with the main control panel and an external power supply; the main control board is provided with a main control chip, and an alarm control circuit, a communication circuit and a plurality of signal acquisition circuits which are respectively connected with the main control chip. The alarm control circuit is connected with the audible and visual alarm; a plurality of sensor interfaces are arranged on the side surface of the shell; and the temperature sensors are connected with the corresponding signal acquisition circuits through the sensor interfaces. And efficient and accurate monitoring of multi-component temperature in the operation process of the speed reducer is realized.

Description

TECHNICAL FIELD

[0001] The utility model relates to industrial equipment monitoring technical field more specifically relates to a kind of multichannel temperature acquisition device for reducer temperature monitoring. BACKGROUND

[0002] At present, as the power transmission device commonly used in industrial machinery, the performance and reliability of the reducer directly affect the stability of the production line. Due to friction and mechanical wear during long-term operation, the temperature of the reducer often rises, which may cause failure or even damage.

[0003] The existing reducer temperature monitoring device usually has the following shortcomings: 1. Insufficient multi-channel expansion capability: most existing devices only support single or limited channels, which cannot meet the needs of complex systems; 2. Insufficient real-time monitoring and data sharing: unable to achieve remote monitoring and cloud management, limiting monitoring efficiency.

[0004] Therefore, how to efficiently and accurately monitor the temperature of multiple components during the operation of the reducer is a problem that needs to be solved by those skilled in the art. SUMMARY

[0005] Therefore, the utility model provides a kind of multichannel temperature acquisition device for reducer temperature monitoring, which realizes the efficient and accurate monitoring of the temperature of multiple components during the operation of the reducer.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A multichannel temperature acquisition device for reducer temperature monitoring, comprising: a housing, an audible and visual alarm and a plurality of temperature sensors;

[0008] The housing is internally provided with a main control board and a power board;

[0009] The power board is connected with the main control board and an external power supply respectively;

[0010] The main control board is provided with a main control chip, an alarm control circuit, a communication circuit and a plurality of signal acquisition circuits connected with the main control chip respectively;

[0011] The alarm control circuit is connected with the audible and visual alarm;

[0012] The side of the housing is provided with a plurality of sensor interfaces;

[0013] The temperature sensors are connected with the corresponding signal acquisition circuits through the sensor interfaces.

[0014] Preferably, all the signal acquisition circuit structures are the same, and each includes a resistor R1, a resistor R2, a capacitor C1, a capacitor C2 and an operational amplifier;

[0015] The non-inverting input terminal of the operational amplifier is grounded through the resistor R1 and the resistor R2 in sequence;

[0016] The connection node of the resistor R1 and the resistor R2 is connected with the temperature sensor;

[0017] The connection node of the non-inverting input terminal of the operational amplifier and the resistor R1 is grounded through the capacitor C1;

[0018] The inverting input terminal of the operational amplifier is connected with the output terminal of the operational amplifier;

[0019] The output terminal of the operational amplifier is connected with the master control chip;

[0020] The positive power supply terminal of the operational amplifier is connected with a first power supply and one end of the capacitor C2 respectively, and the other end of the capacitor C2 is grounded;

[0021] The negative power supply terminal of the operational amplifier is grounded.

[0022] Preferably, the alarm control circuit includes a resistor R3, a resistor R4, a resistor R5, a resistor R6, a red light branch, a green light branch, a yellow light branch, a sound branch and a photoelectric coupler;

[0023] The first pin, the third pin, the fifth pin and the seventh pin of the photoelectric coupler are connected with the master control chip through the resistor R3, the resistor R4, the resistor R5 and the resistor R6 respectively;

[0024] The second pin, the fourth pin, the sixth pin and the eighth pin of the photoelectric coupler are connected and then grounded;

[0025] The ninth pin, the eleventh pin, the thirteenth pin and the fifteenth pin of the photoelectric coupler are connected and then grounded;

[0026] The tenth pin, the twelfth pin, the fourteenth pin and the sixteenth pin of the photoelectric coupler are connected with the red light branch, the green light branch, the yellow light branch and the sound branch respectively.

[0027] Preferably, the sound branch includes a resistor R7, a resistor R8 and a first MOS tube;

[0028] One end of the resistor R7 is connected with the gate of the first MOS tube;

[0029] One end of the resistor R8 is connected with the source of the first MOS tube and then connected with a second power supply;

[0030] The drain of the first MOS tube is connected with the buzzer of the sound-light alarm;

[0031] The other end of the resistance R7 and the other end of the resistance R8 are connected and then connected with the sixteenth pin of the photoelectric coupler;

[0032] The yellow lamp branch includes: resistance R9, resistance R10 and second MOS tube;

[0033] The one end of the resistance R9 is connected with the gate of the second MOS tube;

[0034] The one end of the resistance R10 is connected with the source of the second MOS tube and then connected with the second power supply;

[0035] The drain of the second MOS tube is connected with the yellow lamp of the sound-light alarm;

[0036] The other end of the resistance R9 and the other end of the resistance R10 are connected and then connected with the fourteenth pin of the photoelectric coupler;

[0037] The green lamp branch includes: resistance R11, resistance R12 and third MOS tube;

[0038] The one end of the resistance R11 is connected with the gate of the third MOS tube;

[0039] The one end of the resistance R12 is connected with the source of the third MOS tube and then connected with the second power supply;

[0040] The drain of the third MOS tube is connected with the green lamp of the sound-light alarm;

[0041] The other end of the resistance R11 and the other end of the resistance R12 are connected and then connected with the twelfth pin of the photoelectric coupler;

[0042] The red lamp branch includes: resistance R13, resistance R14 and fourth MOS tube;

[0043] The one end of the resistance R13 is connected with the gate of the fourth MOS tube;

[0044] The one end of the resistance R14 is connected with the source of the fourth MOS tube and then connected with the second power supply;

[0045] The drain of the fourth MOS tube is connected with the red lamp of the sound-light alarm;

[0046] The other end of the resistance R13 and the other end of the resistance R14 are connected and then connected with the tenth pin of the photoelectric coupler.

[0047] Preferably, the communication circuit comprises: a resistor R15, a resistor R16, a resistor R17, a resistor R18, a resistor R19, a communication chip, a capacitor C3 and a transient voltage suppressor diode;

[0048] The first pin of the communication chip is connected with the master control chip and one end of the resistor R15 respectively, and the other end of the resistor R15 is connected with the first power supply;

[0049] The second pin and the third pin of the communication chip are connected and connected with the first power supply;

[0050] The fourth pin of the communication chip is connected with the master control chip and one end of the resistor R16 respectively, and the other end of the resistor R16 is connected with the first power supply;

[0051] The fifth pin of the communication chip is grounded;

[0052] The sixth pin of the communication chip is connected with one end of the resistor R18, one end of the resistor R19 and the first pin of the transient voltage suppressor diode respectively; the connection node thereof is connected with the connection node of the first pin of the transient voltage suppressor diode and an external device;

[0053] The seventh pin of the communication chip is connected with one end of the resistor R17, the other end of the resistor R18 and the second pin of the transient voltage suppressor diode respectively; the connection node thereof is connected with the connection node of the second pin of the transient voltage suppressor diode and an external device;

[0054] The eighth pin of the communication chip is connected with the first power supply and one end of the capacitor C3 respectively, and the other end of the capacitor C3 is grounded.

[0055] Preferably, the power board is provided with: a first interface, a second interface, an AC-DC isolation power module, a common mode filter, a fuse, a resistor R20, a capacitor C4 and an electrolytic capacitor;

[0056] The +VO pin of the AC-DC isolation power module is connected with the positive electrode of the electrolytic capacitor and the first pin of the first interface respectively;

[0057] The -VO pin of the AC-DC isolation power module is connected with the negative electrode of the electrolytic capacitor and the second pin of the first interface respectively;

[0058] The ACL pin of the AC-DC isolation power module is connected with the fourth pin of the common mode filter;

[0059] The ACN pin of the AC-DC isolation power module is connected with the third pin of the common mode filter;

[0060] The first pin of the common mode filter is connected with one end of the capacitor C4 and one end of the resistor R20 respectively, and the connecting node is connected with one end of the fuse, and the other end of the fuse is connected with the second pin of the second interface;

[0061] The second pin of the common mode filter is connected with the other end of the capacitor C4 and the other end of the resistor R20 respectively, and the connecting node is connected with the first pin of the second interface;

[0062] The first interface is connected with the main control board, and the second interface is connected with the external power supply.

[0063] Preferably, a first insulating gasket is arranged between the power supply board and the shell, and a second insulating gasket is arranged between the power supply board and the main control board.

[0064] Preferably, the signal acquisition circuit is connected with a signal adapter board.

[0065] A sensor aviation plug is arranged on the sensor interface, and the signal adapter board is connected with the temperature sensor through the sensor aviation plug.

[0066] Preferably, the main control board further comprises a 4G communication module and a storage module.

[0067] The 4G communication module and the storage module are connected with the main control chip respectively.

[0068] The 4G communication module is used for wirelessly transmitting the collected sensor data to a terminal.

[0069] The storage module is used for storing the collected sensor data.

[0070] Preferably, a display module is further included.

[0071] The display module is connected with the main control chip and is used for displaying the collected sensor data in real time.

[0072] Compared with the prior art, the multi-channel temperature acquisition device for monitoring the temperature of a speed reducer has the following beneficial effects:

[0073] 1. Strong multi-sensor compatibility: the signal adapter board is designed to support various types of temperature sensors (such as analog voltage, analog current 4-20mA, digital I 2 C or SPI, etc.), meeting the temperature acquisition requirements in different scenarios; the modular interface design makes the sensor access more flexible, and users can easily replace or expand the sensor types according to actual needs.

[0074] 2. Compact structure: The new device uses a stacked plate design inside. The power board (220V to 24V) is located at the bottom layer, and the main control board and signal adapter board are located at the upper layer, fully utilizing the space and reducing the size of the equipment. The stacked layout reduces the delay and interference of signal transmission, while improving the anti-shock performance of the system, suitable for long-term stable operation in industrial field.

[0075] 3. High reliability and anti-interference ability: Combined with the design of aviation plug shielding wire, it can effectively resist electromagnetic interference in complex industrial environment, ensure the accuracy and stability of signal transmission; the aviation plug interface is dustproof, waterproof and has high strength anti-shock performance, suitable for harsh industrial environment.

[0076] 4. Support local storage and cloud monitoring: The new device has dual data storage function, which supports local storage (through TF card) and uploads data to cloud through 4G module, so that users can remotely view monitoring data in real time; RS485 interface can also be connected with matching host computer to transmit and collect data, providing comprehensive support for industrial monitoring and fault diagnosis.

[0077] 5. Convenient installation and maintenance: The sensor interface adopts aviation plug design with 12mm diameter and 3 holes, the interface definition is clear, the connection is firm, and the sensor can be quickly installed and replaced; each functional board is connected through standard interface, and the modular design is convenient for disassembly, debugging and maintenance.

[0078] 6. The uniform distribution of shell hole position effectively improves the heat dissipation performance of the device, and supports more diversified installation methods, adapting to the needs of various industrial environments. BRIEF DESCRIPTION OF DRAWINGS

[0079] In order to more clearly illustrate the technical scheme in the embodiments of the present application or prior art, the following will briefly introduce the drawings needed to be used in the embodiment or prior art description. Obviously, the drawings in the following description are only embodiments of the present application, and those skilled in the art can obtain other drawings according to the provided drawings without creating any creative labor.

[0080] Figure 1 A multi-channel temperature acquisition device structure schematic diagram for reducer temperature monitoring provided by the embodiment 1 of the present application.

[0081] Figure 2 A multi-channel temperature acquisition device structure schematic diagram for reducer temperature monitoring provided by the embodiment 2 of the present application.

[0082] Figure 3 A power board circuit schematic diagram provided by the present application.

[0083] Figure 4The utility model provides a main control chip pin schematic drawing.

[0084] Figure 5 The utility model provides a signal acquisition circuit structure schematic drawing.

[0085] Figure 6 The utility model provides an alarm control circuit structure schematic drawing.

[0086] Figure 7 The utility model provides a communication circuit structure schematic drawing.

[0087] Figure 8 The utility model provides a 5V voltage stabilizing circuit structure schematic drawing.

[0088] Figure 9 The utility model provides a shell structure schematic drawing.

[0089] The drawing mark: 1 - shell, 11 - sensor interface, 111 - sensor aviation plug, 112 - first aviation plug, 113 - second aviation plug, 114 - third aviation plug, 12 - lower shell, 13 - upper cover, 2 - audible - visual alarm, 3 - temperature sensor, 4 - main control board, 41 - main control chip, 42 - alarm control circuit, 43 - communication circuit, 44 - signal acquisition circuit, 5 - power board, 6 - 4G communication module, 7 - storage module, 8 - display module. DETAILED DESCRIPTION

[0090] The technical scheme in the embodiments of the utility model will be described clearly and completely below in conjunction with the drawings in the embodiments of the utility model, and apparently, 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 the person skilled in the art without creative labor are within the protection scope of the utility model.

[0091] Embodiment 1

[0092] As Figure 1 The utility model discloses a kind of multichannel temperature acquisition devices for speed reducer temperature monitoring, comprising: shell 1, audible-visual alarm 2 and multiple temperature sensors 3;

[0093] Shell 1 inside is provided with main control board 4 and power board 5;

[0094] Power board 5 is connected with main control board 4 and external power supply respectively;

[0095] Main control board 4 is provided with main control chip 41 and alarm control circuit 42, communication circuit 43 and multiple signal acquisition circuits 44 respectively connected with main control chip;

[0096] The alarm control circuit 42 is connected with the sound-light alarm 2.

[0097] The side of the shell 1 is provided with a plurality of sensor interfaces 11.

[0098] The temperature sensor 3 is connected with the corresponding signal acquisition circuit 44 through the sensor interface 11.

[0099] Embodiment 2

[0100] As shown in the utility model embodiment, a kind of multi-channel temperature acquisition device for speed reducer temperature monitoring, comprising: shell 1, sound-light alarm 2 and multiple temperature sensors 3. Figure 2 The shell 1 is internally provided with main control board 4 and power board 5.

[0101] The power board 5 is connected with main control board 4 and external power supply respectively.

[0102] Preferably, as shown in the utility model embodiment, power board 5 is provided with: first interface P1, second interface P2, AC-DC isolation power module U1, common mode filter L1, fuse F1, resistance R20, capacitor C4 and electrolytic capacitor U2.

[0103] Figure 3 The +VO pin of AC-DC isolation power module U1 is connected with the anode of electrolytic capacitor U2 and the first pin of first interface P1 respectively.

[0104] The -VO pin of AC-DC isolation power module U1 is connected with the cathode of electrolytic capacitor U2 and the second pin of first interface P1 respectively.

[0105] The ACL pin of AC-DC isolation power module U1 is connected with the fourth pin of common mode filter L1.

[0106] The ACN pin of AC-DC isolation power module U1 is connected with the third pin of common mode filter L1.

[0107] The first pin of common mode filter L1 is connected with one end of capacitor C4 and one end of resistance R20 respectively, and the connecting node is connected with one end of fuse F1, and the other end of fuse F1 is connected with the second pin of second interface P2.

[0108] The second pin of common mode filter L1 is connected with the other end of capacitor C4 and the other end of resistance R20 respectively, and the connecting node is connected with the first pin of second interface P2.

[0109] First interface P1 is connected with main control board 4, and second interface P2 is connected with external power supply.

[0110]

[0111] ​​Preferably, the power board 5 is located at the bottom layer inside the device, which converts the external power supply 220VAC into 24V DC and outputs 24V DC voltage through the second interface P2 as the second power supply, providing safe and stable power supply for the entire device.

[0112] Preferably, in this embodiment, the resistor R20 is a pressure-sensitive resistor that serves a protective function.

[0113] Preferably, in this embodiment, the AC-DC isolation power module U1 is of the HLK-30M24 type, which is used to convert unstable AC voltage into stable DC voltage to meet the needs of different electronic devices, and through the transformer or other isolation technology, an electrical isolation barrier is established between the input (usually the power grid) and the output (load side). This not only protects sensitive electronic circuits from transient voltage peaks or noise that may come from the power grid, but also improves safety and prevents the risk of electric shock.

[0114] Preferably, in this embodiment, the common mode filter L1 is of the PDUUAT105-203MLN type, which is used to suppress or reduce common mode noise in the circuit, thereby improving the electromagnetic compatibility of the device. When AC power lines or other signal lines enter the device, they may carry common mode noise from the external environment or internal circuit. The common mode filter can effectively block these unwanted high-frequency noise currents from entering sensitive circuits, protecting the device from interference.

[0115] Preferably, the AC-DC isolation power module U1 itself provides basic noise suppression, while the common mode filter L1 is specifically designed to filter common mode noise more effectively. This combination can greatly reduce the electromagnetic interference (EMI) generated by the device and reduce the impact of external interference on the device.

[0116] Preferably, in this embodiment, the fuse F1 is of the FUSE-2A type, which is a 2 amp (A) rated fuse used for circuit protection. When the current in the circuit exceeds its rated value, it will melt itself to disconnect the circuit, thereby preventing possible damage to the device or system.

[0117] Preferably, in this embodiment, both the first interface P1 and the second interface P2 are 2P interfaces with a 5.0mm pitch.

[0118] Preferably, a first insulating gasket is provided between the power board 5 and the housing 1 to ensure electrical safety; a second insulating gasket is provided between the power board 5 and the main control board 4 to ensure electrical safety and reduce electromagnetic interference on the upper power board 5.

[0119] Preferably, the new power board 5 and the main control board 4 are designed in a stacked manner, so that the overall structure of the device is more compact, the limited internal space is fully utilized, the layering layout reduces the wiring complexity, and the internal heat dissipation path is optimized; the functional boards are connected through standardized interfaces, and are convenient to disassemble and assemble.

[0120] Preferably, the power board 5 and the main control board 4 are provided with holes with a diameter of 3 mm, and are fixed by copper columns.

[0121] The main control board 4 is provided with a main control chip 41, an alarm control circuit 42, a communication circuit 43 and a plurality of signal acquisition circuits 44 connected with the main control chip respectively.

[0122] Preferably, as shown in Figure 4 the main control chip 41 of the embodiment adopts a CH32V307VCT6 microcontroller, which is used to receive the sensor signals collected by the corresponding temperature sensor 3 through the plurality of signal acquisition circuits 44.

[0123] Preferably, as shown in Figure 5 all the signal acquisition circuits 44 are of the same structure and include a resistor R1, a resistor R2, a capacitor C1, a capacitor C2 and an operational amplifier U3.

[0124] The non-inverting input terminal of the operational amplifier is grounded through the resistor R1 and the resistor R2 in sequence.

[0125] The connection node of the resistor R1 and the resistor R2 is connected with the temperature sensor 3.

[0126] The connection node of the non-inverting input terminal of the operational amplifier U3 and the resistor R1 is grounded through the capacitor C1.

[0127] The inverting input terminal of the operational amplifier U3 is connected with the output terminal of the operational amplifier U3.

[0128] The output terminal of the operational amplifier U3 is connected with the main control chip 41.

[0129] The positive power supply terminal of the operational amplifier U3 is connected with the first power supply and one end of the capacitor C2 respectively, and the other end of the capacitor C2 is grounded.

[0130] The negative power supply terminal of the operational amplifier U3 is grounded.

[0131] Preferably, the connection node of the resistor R1 and the resistor R2 is connected with the temperature sensor 3, which is used to obtain the sensor signals collected by the temperature sensor 3.

[0132] Preferably, the connection node of the resistor R1 and the resistor R2 is connected with the temperature sensor 3, the resistor R2 is a sampling resistor, the temperature sensor 3 outputs a 4-20mA current signal to a voltage signal, the voltage signal passes through the resistor R1 to the operational amplifier U3, the operational amplifier U3 amplifies the voltage signal and outputs the voltage signal to the main control chip 41 through the output terminal.

[0133] Preferably, the first power supply is a +5V power supply.

[0134] Preferably, 16 signal acquisition circuits 44 are arranged in the embodiment, which are used to synchronously acquire the temperatures of the key components of the speed reducer.

[0135] The alarm control circuit 42 is connected with the sound-light alarm 2.

[0136] Preferably, as shown in Figure 6 the alarm control circuit 42 comprises the resistor R3, the resistor R4, the resistor R5, the resistor R6, a red light branch, a green light branch, a yellow light branch, a sound branch and the optocoupler U4.

[0137] The first pin, the third pin, the fifth pin and the seventh pin of the optocoupler are connected with the main control chip through the resistor R3, the resistor R4, the resistor R5 and the resistor R6 respectively.

[0138] The second pin, the fourth pin, the sixth pin and the eighth pin of the optocoupler are connected and grounded.

[0139] The ninth pin, the eleventh pin, the thirteenth pin and the fifteenth pin of the optocoupler are connected and grounded.

[0140] The tenth pin, the twelfth pin, the fourteenth pin and the sixteenth pin of the optocoupler are connected with the red light branch, the green light branch, the yellow light branch and the sound branch respectively.

[0141] Preferably, the sound branch comprises the resistor R7, the resistor R8 and the first MOS tube Q1.

[0142] One end of the resistor R7 is connected with the gate of the first MOS tube Q1.

[0143] One end of the resistor R8 is connected with the source of the first MOS tube Q1 and then connected with the second power supply +24V.

[0144] The drain of the first MOS tube is connected with the buzzer of the sound-light alarm 2.

[0145] The other end of the resistor R7 and the other end of the resistor R8 are connected and then connected with the sixteenth pin of the optocoupler U4.

[0146] The yellow light branch comprises the resistor R9, the resistor R10 and the second MOS tube Q2.

[0147] One end of the resistor R9 is connected with the gate of the second MOS Q2;

[0148] One end of the resistor R10 is connected with the source of the second MOS Q2 and then connected with the second power supply +24V;

[0149] The drain of the second MOS is connected with the yellow light of the sound-light alarm 2;

[0150] The other end of the resistor R9 and the other end of the resistor R10 are connected and then connected with the fourteenth pin of the photoelectric coupler U4;

[0151] The green light branch includes the resistor R11, the resistor R12 and the third MOS Q3;

[0152] One end of the resistor R11 is connected with the gate of the third MOS Q3;

[0153] One end of the resistor R12 is connected with the source of the third MOS Q3 and then connected with the second power supply +24V;

[0154] The drain of the third MOS is connected with the green light of the sound-light alarm 2;

[0155] The other end of the resistor R11 and the other end of the resistor R12 are connected and then connected with the twelfth pin of the photoelectric coupler U4;

[0156] The red light branch includes the resistor R13, the resistor R14 and the fourth MOS Q4;

[0157] One end of the resistor R13 is connected with the gate of the fourth MOS Q4;

[0158] One end of the resistor R14 is connected with the source of the fourth MOS Q4 and then connected with the second power supply +24V;

[0159] The drain of the fourth MOS is connected with the red light of the sound-light alarm 2;

[0160] The other end of the resistor R13 and the other end of the resistor R14 are connected and then connected with the tenth pin of the photoelectric coupler U4.

[0161] Preferably, in the embodiment, the first MOS Q1, the second MOS Q2, the third MOS Q3 and the fourth MOS Q4 all adopt the AP40P05 model MOS, which is an N-channel enhancement mode power MOSFET (Metal Oxide Semiconductor Field Effect Transistor) for switching control of the operation of the sound-light alarm 2.

[0162] Preferably, the photoelectric coupler U4 in this embodiment adopts ELQ3H7 photoelectric coupler, which transmits electrical signals between input and output through optical signals, so as to realize electrical isolation between two circuits. It helps to prevent noise interference, protect sensitive circuits, and can safely transmit signals between systems of different potentials.

[0163] Preferably, as shown in Figure 7 communication circuit 43 includes: resistance R15, resistance R16, resistance R17, resistance R18, resistance R19, communication chip U5, capacitor C3 and transient voltage suppressor diode U6;

[0164] The first pin of the communication chip U5 is connected with the host chip 41 and one end of the resistance R15 respectively, and the other end of the resistance R15 is connected with the first power supply +5V;

[0165] The second pin and the third pin of the communication chip U5 are connected and connected with the first power supply +5V;

[0166] The fourth pin of the communication chip U5 is connected with the host chip 41 and one end of the resistance R16 respectively, and the other end of the resistance R16 is connected with the first power supply +5V;

[0167] The fifth pin of the communication chip U5 is grounded;

[0168] The sixth pin of the communication chip U5 is connected with one end of the resistance R18, one end of the resistance R19 and the first pin of the transient voltage suppressor diode U6 respectively; The connection node where the sixth pin of the communication chip U5 is connected with one end of the resistance R18, one end of the resistance R19 and the first pin of the transient voltage suppressor diode U6 respectively is connected with the connection node 485A1 of the first pin of the transient voltage suppressor diode U6 and the external equipment;

[0169] The seventh pin of the communication chip U5 is connected with one end of the resistance R17, the other end of the resistance R18 and the second pin of the transient voltage suppressor diode U6 respectively; The connection node where the seventh pin of the communication chip U5 is connected with one end of the resistance R17, the other end of the resistance R18 and the second pin of the transient voltage suppressor diode U6 respectively is connected with the connection node 485B1 of the second pin of the transient voltage suppressor diode U6 and the external equipment;

[0170] The third pin of the transient voltage suppressor diode U6 is grounded;

[0171] The eighth pin of the communication chip U5 is connected with the first power supply +5V and one end of the capacitor C3 respectively, and the other end of the capacitor C3 is grounded.

[0172] Preferably, the communication circuit 43 is used to convert the TTL signal sent by the host chip 41 into RS485 signal, and then send it to the terminal.

[0173] In this embodiment, the communication chip U5 is preferably a MAX13487 transceiver that supports RS-485 and RS-422 standards, is suitable for multi-point differential data transmission, and can provide enhanced ESD protection, low power consumption, and powerful bus fault protection features, making it very suitable for reliable data transmission in harsh environments.

[0174] In this embodiment, the transient voltage suppressor diode U6 is preferably an SM712 transient voltage suppressor diode, which is used to protect electronic circuits from transient voltage spikes caused by lightning strikes, inductive load switching, and other causes, and can respond and absorb a large amount of transient energy in a very short time, thereby protecting sensitive electronic components from damage. The typical reverse breakdown voltage (Vrwm) of the SM712 transient voltage suppressor diode is 7.0V, meaning that it will not conduct under normal operating conditions until a transient event exceeding this voltage is encountered.

[0175] In this embodiment, as shown in Figure 8 a 5V voltage stabilizing circuit is also included, which is connected to the first interface P1 of the power board 5; the 5V voltage stabilizing circuit includes: capacitors C5, C6, C7, C8, C9, C10, a step-down converter U7, resistors R21, R22, R23, R24, R25, R26, R27, a voltage stabilizing diode D1, an inductor H1, and a light-emitting diode D2.

[0176] The first pin of the step-down converter U7 is connected to the negative electrode of the voltage stabilizing diode D1 and one end of the inductor H1, respectively, and the first pin of the step-down converter U7 is also connected to the eighth pin of the step-down converter U7 through the capacitor C8; the positive electrode of the voltage stabilizing diode D1 is grounded.

[0177] The other end of the inductor H1 is connected to one end of the resistor R25 and one end of the capacitor C10, respectively, and the other end of the resistor R25 is grounded through the resistor R26; the connection node of the other end of the inductor H1 and one end of the resistor R25 is connected to the power output and one end of the resistor R27, respectively, and the other end of the resistor R27 is connected to the positive electrode of the light-emitting diode D2, and the negative electrode of the light-emitting diode D2 is grounded; the other end of the capacitor C10 is grounded; the power output is used to output the converted +5V as the first power supply;

[0178] The second pin of the step-down converter U7 is connected to one end of the resistor R23 and one end of the resistor R24, respectively, and the other end of the resistor R24 is connected to the second power supply +24V, and the other end of the resistor R23 is grounded.

[0179] The third pin of the step-down converter U7 is grounded through the capacitor C9 and the resistor R22 in turn;

[0180] The fifth pin of the step-down converter U7 is grounded.

[0181] The sixth pin of the voltage reducer U7 is grounded through the resistor R21;

[0182] The seventh pin of the voltage reducer U7 is connected with one end of the capacitor C5 and one end of the capacitor C6 respectively; the other end of the capacitor C5 is grounded; the other end of the capacitor C6 is connected with the second power supply +24V and one end of the capacitor C7 respectively, and the other end of the capacitor C7 is grounded.

[0183] Preferably, the input end of the 5V voltage stabilizing circuit is 24V, and the output is 5V after passing through a general 3.3V circuit and being connected with the main control chip.

[0184] Preferably, in the embodiment, the voltage reducer U7 adopts the MP1584EN rectifier voltage reducer, which is used to convert the input +24V direct current voltage into a lower stable output +5V direct current voltage.

[0185] As shown in Figure 9 The side surface of the shell 1 is provided with a plurality of sensor interfaces 11.

[0186] Preferably, the shell 1 includes a lower shell 12 and an upper cover 13, and the lower shell 12 is uniformly provided with a plurality of sensor interfaces 11 on the side surface.

[0187] Preferably, in the embodiment, 16 sensor interfaces 11 are provided, 8 of which are uniformly arranged on the bottom of the lower shell 12, and 8 of which are uniformly arranged on the side surface of the lower shell 12, the spacing between each group of sensor interfaces 11 is 7.5mm, and the aperture of the sensor interface 11 is r8.0mm, which facilitates the wiring operation of the sensor, and the uniform distribution of the sensor interfaces 11 on the lower shell 12 effectively improves the heat dissipation performance of the device, while supporting more diversified installation methods and adapting to various industrial environment requirements.

[0188] Preferably, the upper cover 13 is provided with a rectangular opening for arranging a display module.

[0189] Preferably, in the embodiment, the lower shell 12 and the upper cover 13 are both made of ABS plastic material, which has good waterproof and dustproof performance and is suitable for harsh industrial environments. The lower shell 12 and the upper cover 13 are designed by modular assembly, which supports screw fixation and installation, ensuring the stability of the structure and facilitating maintenance and disassembly.

[0190] The temperature sensor 3 is connected with the corresponding signal acquisition circuit 44 through the sensor interface 11.

[0191] Preferably, it further includes a signal adapter plate, and the signal acquisition circuit 44 is connected with the signal adapter plate.

[0192] The sensor interface 11 is provided with a sensor aviation plug 111, and the signal adapter plate is connected with the temperature sensor 3 through the sensor aviation plug 111.

[0193] Preferably, the signal adapter plate is connected with the signal acquisition circuit 44 on the main control board 4 through a 2*5 2.54mm pitch flat cable and a 2*12 2.54 pitch flat cable, and mainly functions to convert interfaces and facilitate wiring. The signal adapter plate adopts a modular interface design, each interface module can be independently detached or replaced, meets the needs of different application scenarios, and supports future function upgrading or extension of access of different types of sensors.

[0194] Preferably, the signal adapter plate in the embodiment supports multiple sensor types, including analog voltage signals, analog current signals (4-20mA), digital signals (such as I 2 C, SPI), etc.; users can replace interfaces or load specific drivers according to actual needs to realize quick compatibility of different sensors.

[0195] Preferably, the sensor aviation plug 111 adopts a standard connector, and the specific specification is a three-hole design with a diameter of 12mm, and each hole is defined as follows: 24V power supply: provides stable direct current power supply for external sensors; signal line: used for transmitting collected data of the temperature sensor; sensor shielding line: used for eliminating electromagnetic interference in the environment to ensure stability and accuracy of data transmission.

[0196] Preferably, each sensor aviation plug 111 is clearly labeled to avoid wiring confusion.

[0197] Preferably, the main control board 41 further includes a 4G communication module 6 and a storage module 7.

[0198] The 4G communication module 6 and the storage module 7 are respectively connected with the main control chip 41.

[0199] The 4G communication module 6 is used for wirelessly transmitting collected sensor data to a terminal.

[0200] The storage module 7 is used for storing collected sensor data.

[0201] Preferably, the 4G communication module 6 in the embodiment adopts a WH-LTE-S1 type 4G communication module; and the storage module 7 adopts an SD card.

[0202] Preferably, the lower shell 12 side is also provided with an RS485 interface, an alarm lamp interface and an external power supply interface, and the RS485 interface, the alarm lamp interface and the external power supply interface are correspondingly provided with a first aviation plug 112, a second aviation plug 113 and a third aviation plug 114; the communication circuit 43 is connected with the external terminal through the first aviation plug 112, and is used for leading out the collected sensor data through the data line; the alarm control circuit 42 is connected with the sound-light alarm 2 through the second aviation plug 113; and the power board 5 is connected with the external power supply through the third aviation plug 114.

[0203] Preferably, the first aviation plug 112 is specifically designed as a four-hole design with a diameter of 12 mm, and each hole is defined as: 5V power supply, RS485 signal A, RS485 signal B and ground wire.

[0204] Preferably, the second aviation plug 113 is specifically designed as a five-hole design with a diameter of 12 mm, and each hole is defined as: a purple wire controls the buzzer of the sound-light alarm 2; a red wire controls the red light of the sound-light alarm 2; a green wire controls the green light of the sound-light alarm 2; a yellow wire controls the yellow light of the sound-light alarm 2; and an alarm lamp ground wire.

[0205] Preferably, the third aviation plug 114 is specifically designed as a two-hole design with a diameter of 16 mm, and both holes are 220V alternating current.

[0206] Preferably, the aviation plug has strong shock resistance, which can ensure the stable operation of the equipment in the industrial environment; the plug interface is firm and durable, avoiding the problems of looseness or poor contact caused by vibration or long-term use. The three-hole design of the plug is simple and clear, and the user can quickly complete the connection operation; the standardized interface size (12 mm in diameter) supports quick replacement of sensors, improving equipment maintenance efficiency.

[0207] Preferably, the aviation plug is completely aligned with the hole position on the equipment shell, and the bottom is arranged in multiple channels with uniform spacing (25 mm), avoiding the crowding of sensor wiring. At the same time, each sensor interface is directly connected to the signal processing module of the main control board through internal wiring, reducing the intermediate conversion link and improving the signal transmission efficiency.

[0208] Preferably, it also includes a display module 8.

[0209] The display module 8 is connected with the main control chip 41, and is used for real-time display of the collected sensor data.

[0210] Preferably, the display module 8 adopts a liquid crystal display, and can also be used for parameter setting and operation.

[0211] Embodiment 3

[0212] Working principle:

[0213] A plurality of temperature sensors 3 are arranged on each component of the speed reducer that needs to be monitored, real-time temperature data is collected and converted into corresponding current signals, which are transmitted to the signal adapter board through the corresponding sensor aviation plug 111, the signal adapter board sends the current signals to the corresponding signal acquisition circuit 44, the signal acquisition circuit 44 converts the current signals into voltage signals and transmits them to the main control chip 41, the main control chip 41 compares the voltage signals with the normal threshold value, and when the value is abnormal, a control signal is sent to the alarm control circuit 42, the sound and light alarm 2 is controlled to sound and light warning through the alarm control circuit 42, and the collected temperature data is stored in the storage module 7, and the collected multiple temperature data is displayed in real time through the display module 8;

[0214] The collected temperature data is exported to the terminal device in a wired manner through the communication circuit 43; the collected temperature data is wirelessly transmitted to the terminal or the cloud through the 4G communication module 6, so as to realize remote real-time monitoring;

[0215] The power board 4 is used for converting the external power supply 220V AC voltage into 24V DC voltage as the second power supply, and the 5V voltage stabilizing circuit converts the input +24V DC voltage into +5V DC voltage as the first power supply, and the first power supply and the second power supply are used to supply power to the whole device.

[0216] In the specification, each embodiment is described in a progressive manner, and each embodiment focuses on the difference from other embodiments, and the same or similar parts between each embodiment can be referred to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the related parts can be referred to the method part.

[0217] The above description of the disclosed embodiments enables a person skilled in the art to implement or use the present application. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present application. Therefore, the present application will not be limited to the embodiments shown herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A multi-channel temperature acquisition device for reducer temperature monitoring, characterized in that, The utility model relates to a temperature sensor signal acquisition device, including: Shell, sound light alarm and a plurality of temperature sensors; The shell inside is equipped with main control board and power board; The power board is connected with main control board and external power respectively; The main control board is provided with main control chip and alarm control circuit, communication circuit and a plurality of signal acquisition circuit connected with main control chip respectively; The alarm control circuit is connected with the sound light alarm; The side of the shell is provided with a plurality of sensor interfaces; The temperature sensor is connected with corresponding signal acquisition circuit through sensor interface.

2. The multi-channel temperature acquisition device for monitoring temperature of a reducer according to claim 1, characterized in that, All signal acquisition circuit structures are same, and all include: resistance R1, resistance R2, capacitor C1, capacitor C2 and operational amplifier; The noninverting input of operational amplifier is connected with the ground through resistance R1 and resistance R2 in proper order; The connecting node of resistance R1 and resistance R2 is connected with temperature sensor; The noninverting input of operational amplifier is connected with the connecting node of resistance R1 through capacitor C1 and is connected with the ground; The inverting input of operational amplifier is connected with the output of operational amplifier; The output of operational amplifier is connected with main control chip; The positive power supply end of operational amplifier is connected with first power supply and one end of capacitor C2 respectively, and the other end of capacitor C2 is connected with the ground; The negative power supply end of operational amplifier is connected with the ground.

3. The multi-channel temperature acquisition device for monitoring temperature of a reducer according to claim 1, characterized in that, The alarm control circuit includes: resistance R3, resistance R4, resistance R5, resistance R6, red light branch, green light branch, yellow light branch, sound branch and photoelectric coupler; The first pin, third pin, fifth pin and seventh pin of photoelectric coupler are connected with main control chip through resistance R3, resistance R4, resistance R5 and resistance R6 respectively; The second pin, fourth pin, sixth pin and eighth pin of photoelectric coupler are connected with the ground after being connected; The ninth pin, eleventh pin, thirteenth pin and fifteenth pin of photoelectric coupler are connected with the ground after being connected; The tenth pin, twelfth pin, fourteenth pin and sixteenth pin of photoelectric coupler are connected with red light branch, green light branch, yellow light branch and sound branch respectively.

4. The multi-channel temperature acquisition device for monitoring temperature of a reducer according to claim 3, characterized in that, The sound branch includes: resistance R7, resistance R8 and first MOS tube; One end of resistance R7 is connected with the gate of first MOS tube; One end of resistance R8 is connected with the source of first MOS tube and is connected with second power supply; The drain of first MOS tube is connected with the buzzer of sound light alarm; The other end of resistance R7 and the other end of resistance R8 are connected and are connected with the sixteenth pin of photoelectric coupler; The yellow light branch includes: resistance R9, resistance R10 and second MOS tube; One end of resistance R9 is connected with the gate of second MOS tube; One end of resistance R10 is connected with the source of second MOS tube and is connected with second power supply; The drain of second MOS tube is connected with the yellow light of sound light alarm; The other end of resistance R9 and the other end of resistance R10 are connected and are connected with the fourteenth pin of photoelectric coupler. The green light branch includes: resistance R11, resistance R12 and third MOS tube; One end of the resistance R11 is connected with the gate of the third MOS tube; One end of the resistance R12 is connected with the source of the third MOS tube and then connected with the second power supply; The drain of the third MOS tube is connected with the green light of the sound-light alarm; The other end of the resistance R11 and the other end of the resistance R12 are connected and then connected with the twelfth pin of the photoelectric coupler; The red light branch includes: resistance R13, resistance R14 and fourth MOS tube; One end of the resistance R13 is connected with the gate of the fourth MOS tube; One end of the resistance R14 is connected with the source of the fourth MOS tube and then connected with the second power supply; The drain of the fourth MOS tube is connected with the red light of the sound-light alarm; The other end of the resistance R13 and the other end of the resistance R14 are connected and then connected with the tenth pin of the photoelectric coupler.

5. The multi-channel temperature acquisition device for monitoring temperature of a reducer according to claim 2, characterized in that, The communication circuit includes: resistance R15, resistance R16, resistance R17, resistance R18, resistance R19, communication chip, capacitor C3 and transient voltage suppressor diode; The first pin of the communication chip is connected with the master control chip and one end of the resistance R15 respectively, and the other end of the resistance R15 is connected with the first power supply; The second pin and the third pin of the communication chip are connected and then connected with the first power supply; The fourth pin of the communication chip is connected with the master control chip and one end of the resistance R16 respectively, and the other end of the resistance R16 is connected with the first power supply; The fifth pin of the communication chip is grounded; The sixth pin of the communication chip is connected with one end of the resistance R18, one end of the resistance R19 and the first pin of the transient voltage suppressor diode respectively; the connection node is connected with the connection node of the first pin of the transient voltage suppressor diode and external equipment; The seventh pin of the communication chip is connected with one end of the resistance R17, the other end of the resistance R18 and the second pin of the transient voltage suppressor diode respectively; the connection node is connected with the connection node of the second pin of the transient voltage suppressor diode and external equipment; The eighth pin of the communication chip is connected with the first power supply and one end of the capacitor C3 respectively, and the other end of the capacitor C3 is grounded.

6. The multi-channel temperature acquisition device for monitoring temperature of a reducer according to claim 2, characterized in that, The power board is provided with: first interface, second interface, AC-DC isolation power module, common mode filter, fuse, resistance R20, capacitor C4 and electrolytic capacitor; The +VO pin of the AC-DC isolation power module is connected with the positive electrode of the electrolytic capacitor and the first pin of the first interface respectively; The -VO pin of the AC-DC isolation power module is connected with the negative electrode of the electrolytic capacitor and the second pin of the first interface respectively; The ACL pin of the AC-DC isolation power module is connected with the fourth pin of the common mode filter; The ACN pin of the AC-DC isolation power module is connected with the third pin of the common mode filter; The first pin of the common mode filter is connected with one end of the capacitor C4 and one end of the resistor R20 respectively, and the connection node is connected with one end of the fuse, and the other end of the fuse is connected with the second pin of the second interface; The second pin of the common mode filter is connected with the other end of the capacitor C4 and the other end of the resistor R20 respectively, and the connection node is connected with the first pin of the second interface; The first interface is connected with the main control board, and the second interface is connected with the external power supply.

7. The multi-channel temperature acquisition device for monitoring temperature of a reducer according to claim 1, characterized in that, First insulating gaskets are arranged between the power board and the shell, and second insulating gaskets are arranged between the power board and the main control board.

8. The multi-channel temperature acquisition device for monitoring temperature of a reducer according to claim 1, characterized in that, A signal adapter board is further included, and the signal acquisition circuit is connected with the signal adapter board; A sensor aviation plug is arranged on the sensor interface, and the signal adapter board is connected with the temperature sensor through the sensor aviation plug.

9. The multi-channel temperature acquisition device for monitoring temperature of a reducer according to claim 1, characterized in that, The main control board further includes a 4G communication module and a storage module; The 4G communication module and the storage module are connected with the main control chip respectively; The 4G communication module is used for wirelessly transmitting the collected sensor data to a terminal. The storage module is used for storing the collected sensor data.

10. The multi-channel temperature acquisition device for monitoring temperature of a reducer according to claim 9, characterized in that, A display module is further included; The display module is connected with the main control chip and is used for displaying the collected sensor data in real time.

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