Combustible gas alarm probe on-line detection device

Abstract

According to the combustible gas alarm probe on-line detection device provided by the utility model, a complete on-line detection system is formed in a multi-module combination form, and the power supply management circuit is used for converting commercial power alternating current into direct current when the commercial power alternating current is accessed, so that the commercial power alternating current can be conveniently converted into subsequent voltage for supplying power to different modules; the gas control circuit is used for selecting gases with different concentrations for detection by controlling pins of the main controller; the man-machine interaction circuit is used for switching different liquid crystal display information for a key to understand liquid crystal data content writing; when the near-end communication circuit detects different combustible gas detectors, the near-end communication circuit reads data during detection through the near-end communication circuit; and in the remote communication circuit, the data of the main controller is interacted with the remote data processing chip.

Description

Technical Field

[0001] This utility model belongs to the field of gas safety monitoring, and specifically relates to an online detection device for combustible gas alarm probes. Background Technology

[0002] With the rapid development of industrial modernization, gas safety monitoring has become increasingly important in fields such as chemical, petroleum, and natural gas. Therefore, the accuracy and reliability of combustible gas detector probes, as key equipment for gas safety monitoring, are crucial to ensuring safe industrial production.

[0003] Traditional methods for detecting combustible gas detector probes typically rely on manual inspection, leading to a lack of consistency, data reliability, and stability in the detection process. Furthermore, this approach wastes significant human, material, and time resources, and cannot guarantee the accuracy and stability of each combustible gas detector's detection. Utility Model Content

[0004] The purpose of this invention is to provide an online detection device for combustible gas alarm probes, so as to solve the problems of low accuracy and efficiency of existing combustible gas alarm probes during use.

[0005] To solve the above-mentioned technical problems, the present invention adopts the following technical solution:

[0006] An online detection device for a combustible gas alarm probe includes a main control chip U26, a power management circuit, a gas control circuit, a human-machine interaction circuit, a storage circuit, a near-end communication circuit, and a remote communication circuit.

[0007] The power management circuit is connected to the main control chip U26, the gas control circuit, the human-machine interaction circuit, the storage circuit, the near-end communication circuit, and the long-range communication circuit, respectively.

[0008] The main control chip U26 is also connected to the gas control circuit, human-machine interaction circuit, storage circuit, near-end communication circuit and long-range communication circuit respectively.

[0009] This utility model also has the following features:

[0010] Furthermore, the main control chip U26 is model FM33LG0x8.

[0011] Furthermore, the power management circuit includes:

[0012] Power supply J19, capacitor E8, capacitor C33, diode D37, light-emitting diode D39, resistor R61, and step-down chip U14;

[0013] Power supply J20, resistor R69, diode D43, diode D44, and LED D46;

[0014] Capacitors C34, C24, C25, C35, C36, E9, E10, and C33; resistors R1, R59, R60, R55, R56, R57, and R54; diodes D41, D42, D35, and D40; power supply chip U12, U15, and U13; and inductor L6.

[0015] Capacitors C26, C27, and C28, and power chip U10;

[0016] The first terminal of power supply J19 is connected to pin 1 of step-down chip U14, and the second terminal of power supply J19 is connected to pin 2 of step-down chip U14; pin 3 of step-down chip U14 is grounded together with the negative terminal of capacitor E8 and one end of capacitor C33; pin 4 of step-down chip U14 is connected together with the positive terminal of capacitor E8, the other end of capacitor C33, and the positive terminal of diode D37; the negative terminal of diode D37 is connected to the positive terminal of LED D39 through resistor R61, and the negative terminal of LED D39 is grounded;

[0017] The first terminal of the power supply J20 is grounded, and the second terminal of the power supply J20 is connected to one end of the resistor R69, the positive terminal of the diode D43, and the positive terminal of the diode D44. The other end of the resistor R69 is connected to the positive terminal of the light-emitting diode D46, and the negative terminal of the light-emitting diode D46 is grounded.

[0018] The negative terminal of diode D35 is connected to the gas control circuit, and the positive terminal of diode D35 is connected to one end of capacitor C25, one end of resistor R54, and pin 2 of power chip U12; pin 1 of power chip U12 is connected to the other end of resistor R54 and one end of resistor R57; the other end of resistor R57 is connected in series with resistors R56 and R55, and the other end of resistor R55 is grounded together with one end of capacitor C24.

[0019] The other end of capacitor C24 is connected to pin 3 of power chip U12, the negative terminal of diode D41, one end of capacitor C34, the negative terminals of diodes D43 and D44, the negative terminal of diode D37, the positive terminal of capacitor E11, and pin 1 of power chip U15.

[0020] The power chip U12 has four pins connected to one end of resistor R1 and one end of resistor R59; the other end of resistor R1 is grounded; and the other end of resistor R59 is connected to one end of resistor R60.

[0021] The other end of the resistor R60 is connected to the positive terminal of diode D40, the positive terminal of capacitor E10, the positive terminal of capacitor E9, one end of capacitor C35, one end of capacitor C36, and one end of inductor L6; the other end of the inductor L6 is connected to pin 2 of power chip U12 and the negative terminal of diode D42.

[0022] The positive terminal of diode D41, the other end of capacitor C34, the negative terminal of capacitor E11, pins 3 and 5 of power chip U12, the positive terminal of diode D42, the other end of capacitor C35, the other end of capacitor C36, the negative terminals of capacitor E9 and capacitor E10 are all grounded.

[0023] The negative terminal of diode D40 is connected to one end of capacitor C26 and pin 2 of power chip U10.

[0024] The other end of capacitor C26 is grounded together with pin 1 of power chip U10, one end of capacitor C27, and one end of capacitor C28.

[0025] The power chip U10 has three pins connected to the gas detection circuit along with the other end of capacitor C27 and capacitor C28.

[0026] Furthermore, the gas control circuit includes:

[0027] Capacitors C2, C3, C4, C5, C39, and C40; terminal block P2, terminal block P9, and terminal block P10; driver chip U20, driver chip U2, and driver chip U3.

[0028] Resistor R2 and terminal block P8;

[0029] The capacitors C2, C3, C4, C5, C39, C40, terminal block P2, terminal block P9, terminal block P10, driver chip U20, driver chip U2, and driver chip U3 are mentioned.

[0030] Pin 1 of the driver chip U20 is connected to the negative terminal of diode D35;

[0031] Pin 2 of the driver chip U20 is connected to pin 2 of the connector P2;

[0032] Pin 3 of the driver chip U20 is connected to pin 1 of the connector P2;

[0033] The driver chip U20 has four pins grounded.

[0034] Pin 5 of the driver chip U20 is connected to pin 3 of the power chip U10;

[0035] Pin 6 of the driver chip U20 is connected to pin 10 of the main control chip U26;

[0036] Pin 7 of the driver chip U20 is connected to pin 11 of the main control chip U26;

[0037] The 8th pin of the driver chip U20 is connected to the 12th pin of the main control chip U26;

[0038] Pin 1 of the driver chip U2 is connected to the negative terminal of diode D35;

[0039] Pin 2 of the driver chip U2 is connected to pin 2 of the connector P9;

[0040] Pin 3 of the driver chip U2 is connected to pin 1 of the connector P9;

[0041] The driver chip U2 has four pins grounded.

[0042] Pin 5 of the driver chip U2 is connected to pin 3 of the power chip U10;

[0043] Pin 6 of the driver chip U2 is connected to pin 10 of the main control chip U26;

[0044] Pin 7 of the driver chip U2 is connected to pin 13 of the main control chip U26;

[0045] The 8th pin of the driver chip U2 is connected to the 14th pin of the main control chip U26;

[0046] Pin 1 of the driver chip U3 is connected to the negative terminal of diode D35;

[0047] Pin 2 of the driver chip U3 is connected to pin 2 of the connector P10;

[0048] Pin 3 of the driver chip U3 is connected to pin 1 of the connector P10.

[0049] The driver chip U3 has four pins grounded.

[0050] Pin 5 of the driver chip U3 is connected to pin 3 of the power chip U10;

[0051] The 6th pin of the driver chip U3 is connected to the 10th pin of the main control chip U26;

[0052] Pin 7 of the driver chip U3 is connected to pin 34 of the main control chip U26;

[0053] The 8th pin of the driver chip U3 is connected to the 25th pin of the main control chip U26;

[0054] Pin 1 of the terminal block P8 is connected to pin 45 of the main control chip U26;

[0055] Pin 2 of the terminal block P8 is grounded;

[0056] Pin 3 of the terminal block P8 is connected to pin 44 of the main control chip U26 and one end of the resistor R2; the other end of the resistor R2 is connected to pin 63 of the main control chip U26.

[0057] Furthermore, the human-computer interaction circuit includes:

[0058] Driver chip U25;

[0059] Resistor R25 and button P11;

[0060] Pin 1 of the driver chip U25 is left floating;

[0061] Pins 2 and 8 of the driver chip U25 are connected to pins 64 and 67 of the main control chip U26.

[0062] Pin 3 of the driver chip U25 is left floating;

[0063] Pin 4 of the driver chip U25 is connected to pin 53 of the main control chip U26;

[0064] Pin 5 of the driver chip U25 is connected to pin 54 of the main control chip U26;

[0065] The 6th pin of the driver chip U25 is connected to the 55th pin of the main control chip U26;

[0066] Pin 7 of the driver chip U25 is connected to pin 56 of the main control chip U26;

[0067] Pin 9 of the driver chip U25 is connected to pin 52 of the main control chip U26;

[0068] Pin 10 of the aforementioned driver chip U25 is grounded;

[0069] Pin 1 of the aforementioned button P11 is grounded;

[0070] The 2nd pin of the button P11 is connected to one end of the resistor R58, and the other end of the resistor R58 is connected to pins 64 and 67 of the main control chip U26.

[0071] Furthermore, the storage circuit includes:

[0072] Resistor R122, resistor R123, capacitor C76, and memory chip U29;

[0073] One end of the capacitor C76 and pins 1, 2, 3, and 4 of the memory chip U29 are grounded together;

[0074] The other end of the capacitor C76, pin 8 of the memory chip U29, one end of resistor R122, one end of resistor R123, and pin 18 of the controller chip U26 are connected together.

[0075] Pin 7 of the aforementioned memory chip U29 is grounded;

[0076] Pin 5 of the memory chip U29 is connected to the other end of resistor R122;

[0077] The 6 pins of the memory chip U29 are connected to the other end of the resistor R123.

[0078] Furthermore, the near-end communication circuit includes:

[0079] Communication chip U23 and capacitor C55;

[0080] Pin 1 of the communication chip U23 is connected to pin 6 of the main control chip U26;

[0081] Pins 2 and 3 of the communication chip U23 are connected to pin 8 of the main control chip U26;

[0082] The 4th pin of the communication chip U23 is connected to the 7th pin of the main control chip U26;

[0083] Pin 5 of the communication chip U23 is grounded;

[0084] Pins 6 and 7 of the communication chip U23 are left floating.

[0085] The 8 pins of the communication chip U23 and one end of the capacitor C55 are connected to the 64 pins of the main control chip U26, and the other end of the capacitor C55 is grounded.

[0086] Furthermore, the remote communication circuit includes:

[0087] Remote transmission chip U11, resistors R48 and R49, transistor Q12, resistor R50, phone card J11, capacitor C37, resistors R57, R58, R59, capacitors C38, C39, C40, and antenna JP2.

[0088] Remote transmission chip U11, resistors R48 and R49, transistor Q12, resistor R50, phone card J11, capacitor C37, resistors R57, R58, R59, capacitors C38, C39, C40, and antenna JP2.

[0089] One end of resistor R48 is connected to pin 4 of the main control chip U26; the other end of resistor R48 is connected to one end of resistor R49 and pin 18 of the remote transmission chip U11; the other end of resistor R49 is grounded.

[0090] The base of the transistor Q12 is connected to pin 13 of the remote transmission chip U11;

[0091] The emitter of transistor Q12 is connected to pin 19 of remote transmission chip U19;

[0092] The collector of the transistor Q12 is connected to one end of the resistor R50 and pin 3 of the main control chip U26.

[0093] The other end of the resistor R50 is connected to pin 72 of the remote transmission chip U11;

[0094] The 1st pin of the phone card J11 is connected to one end of the capacitor C37, and the other end of the capacitor C37 is grounded together with the 4th pin of the phone card J11.

[0095] The 2nd pin of the telephone card J11 is connected to one end of the resistor R57, and the other end of the resistor R57, one end of the capacitor C40, and the 25th pin of the remote transmission chip U11 are connected together.

[0096] The 3rd pin of the telephone card J11 is connected to one end of the resistor R58, and is also connected to the other end of the resistor R58, one end of the capacitor C39, and the 24th pin of the remote transmission chip U11.

[0097] Pin 5 of the aforementioned phone card J11 is left floating;

[0098] One end of the 6-pin resistor R59 of the telephone card J11 is connected, and the other end of the resistor R59 is connected to one end of the capacitor C38 and pin 23 of the remote transmission chip U11.

[0099] The other ends of capacitors C38, C39, and C40 are respectively grounded;

[0100] Pins 9 and 10 of the remote transmission chip U11 are connected to a single point, which is connected to pin 4 of the power supply chip U15.

[0101] Pins 1, 2, 4, 5, 7, and 8 of the aforementioned remote transmission chip U11 are all connected to and grounded;

[0102] The remote transmission chip U11 has its 32, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 55, 57 and 60 pins grounded together;

[0103] The 63, 65, 68, 70 and 86 pins of the aforementioned remote transmission chip U11 are all grounded;

[0104] The 96th pin of the remote transmission chip U11 is connected to the 2nd pin of the antenna JP2, and the 1st pin of the antenna JP2 is grounded.

[0105] Compared with the prior art, this utility model has the following technical effects:

[0106] This utility model discloses an online detection device for combustible gas detectors. It comprises a complete online detection system composed of multiple modules. The power management circuit converts AC mains power to DC power for subsequent voltage conversion to power different modules. The gas control circuit selects different gas concentrations for detection by controlling the main controller pins. The human-machine interface circuit allows switching between different LCD displays and understanding the LCD data content. The near-end communication circuit reads data during detection of different combustible gas detectors. The remote communication circuit exchanges data between the main controller and a remote data processing chip. Attached Figure Description

[0107] Figure 1 This is a schematic diagram of the overall system of the online detection device for combustible gas alarm probes of this utility model;

[0108] Figure 2 This is a schematic diagram of the main control chip in this utility model;

[0109] Figure 3(a) is a partial structural schematic diagram of the power management circuit in this utility model;

[0110] Figure 3(b) is a partial structural schematic diagram of the power management circuit in this utility model;

[0111] Figure 3(c) is a partial structural schematic diagram of the power management circuit in this utility model;

[0112] Figure 3(d) is a partial structural schematic diagram of the power management circuit in this utility model;

[0113] Figure 4(a) is a partial structural schematic diagram of this utility model;

[0114] Figure 4(b) is a partial structural schematic diagram of the gas control circuit in this utility model;

[0115] Figure 5(a) is a partial structural schematic diagram of the human-computer interaction circuit in this utility model;

[0116] Figure 5(b) is a partial structural schematic diagram of the human-computer interaction circuit in this utility model;

[0117] Figure 6This is a schematic diagram of the storage circuit in this utility model;

[0118] Figure 7 This is a schematic diagram of the near-end communication circuit in this utility model;

[0119] Figure 8(a) is a partial structural schematic diagram of the remote communication circuit in this utility model;

[0120] Figure 8(b) is a partial structural schematic diagram of the remote communication circuit in this utility model;

[0121] Figure 8(c) is a partial structural schematic diagram of the remote communication circuit in this utility model. Detailed Implementation

[0122] It should be noted that, unless otherwise specified, all components in this utility model are components known in the prior art.

[0123] The following are specific embodiments of the present invention. It should be noted that the present invention is not limited to the following specific embodiments. All equivalent modifications made based on the technical solutions of this application fall within the protection scope of the present invention.

[0124] It should be noted that, unless otherwise specified, all electronic components in this application are known components in the prior art. The connections between components are made using existing methods and controlled using existing algorithms, without any improvements to the algorithms.

[0125] like Figure 1 As shown, an online detection device for a combustible gas alarm probe includes a main control chip U26, a power management circuit, a gas control circuit, a human-machine interaction circuit, a storage circuit, a near-end communication circuit, and a remote communication circuit.

[0126] The power management circuit is connected to the main control chip U26, the gas control circuit, the human-machine interaction circuit, the storage circuit, the near-end communication circuit, and the long-range communication circuit, respectively.

[0127] The main control chip U26 is also connected to the gas control circuit, human-machine interaction circuit, storage circuit, near-end communication circuit and long-range communication circuit respectively.

[0128] like Figure 2 As shown, the main control chip U26 is model FM33LG0x8.

[0129] As shown in Figures 3(a)-3(d), the power management circuit includes:

[0130] Power supply J19, capacitor E8, capacitor C33, diode D37, light-emitting diode D39, resistor R61, and step-down chip U14;

[0131] Power supply J20, resistor R69, diode D43, diode D44, and LED D46;

[0132] Capacitors C34, C24, C25, C35, C36, E9, E10, and C33; resistors R1, R59, R60, R55, R56, R57, and R54; diodes D41, D42, D35, and D40; power supply chip U12, U15, and U13; and inductor L6.

[0133] Capacitors C26, C27, and C28, and power chip U10;

[0134] The first terminal of power supply J19 is connected to pin 1 of buck converter chip U14, and the second terminal of power supply J19 is connected to pin 2 of buck converter chip U14. Pin 3 of buck converter chip U14 is grounded together with the negative terminal of capacitor E8 and one end of capacitor C33. Pin 4 of buck converter chip U14 is connected together with the positive terminal of capacitor E8, the other end of capacitor C33, and the positive terminal of diode D37. The negative terminal of diode D37 is connected to the positive terminal of LED D39 through resistor R61, and the negative terminal of LED D39 is grounded.

[0135] The first terminal of power supply J20 is grounded, and the second terminal of power supply J20 is connected to one end of resistor R69, the positive terminal of diode D43, and the positive terminal of diode D44. The other end of resistor R69 is connected to the positive terminal of LED D46, and the negative terminal of LED D46 is grounded.

[0136] The negative terminal of diode D35 is connected to the gas control circuit, and the positive terminal of diode D35 is connected to one end of capacitor C25, one end of resistor R54, and pin 2 of power chip U12; pin 1 of power chip U12 is connected to the other end of resistor R54 and one end of resistor R57; the other end of resistor R57 is connected in series with resistors R56 and R55, and the other end of resistor R55 is grounded together with one end of capacitor C24.

[0137] The other end of capacitor C24 is connected to pin 3 of power chip U12, the negative terminal of diode D41, one end of capacitor C34, the negative terminals of diodes D43 and D44, the negative terminal of diode D37, the positive terminal of capacitor E11, and pin 1 of power chip U15.

[0138] The four pins of the power chip U12 are connected to one end of resistor R1 and one end of resistor R59; the other end of resistor R1 is grounded; the other end of resistor R59 is connected to one end of resistor R60.

[0139] The other end of resistor R60 is connected to the positive terminal of diode D40, the positive terminal of capacitor E10, the positive terminal of capacitor E9, one end of capacitor C35, one end of capacitor C36, and one end of inductor L6; the other end of inductor L6 is connected to pin 2 of power chip U12 and the negative terminal of diode D42.

[0140] The positive terminal of diode D41, the other end of capacitor C34, the negative terminal of capacitor E11, pins 3 and 5 of power chip U12, the positive terminal of diode D42, the other end of capacitor C35, the other end of capacitor C36, and the negative terminals of capacitors E9 and E10 are all grounded.

[0141] The negative terminal of diode D40 is connected to one end of capacitor C26 and pin 2 of power chip U10.

[0142] The other end of capacitor C26 is grounded together with pin 1 of power chip U10, one end of capacitor C27 and one end of capacitor C28.

[0143] Pin 3 of the power chip U10, along with the other end of capacitor C27 and capacitor C28, are connected to the gas detection circuit.

[0144] Among them, diode D37, light-emitting diode D39, power chip U14, and power socket J19 have the following models in order: SS12, 072, LD40-23BxxR2, and P5.0-2p.

[0145] The values ​​of capacitor E8, capacitor C33, resistor R61, and resistor R13 are 470uF / 50V and 10K respectively.

[0146] Diodes D43, D44, and D46, and power socket J20, with model numbers SS12, SS12, and 072 respectively, and P5.0-2p.

[0147] The value of resistor R69 is 5.1K.

[0148] The model numbers of diodes D41, D42, D35, D40, power chip U12, power chip U15, power chip U13, and inductor L6 are M7, M7, M7, M7, M7, LM317, LM2596, ME6210, and 68UH, respectively.

[0149] The values ​​of capacitors C34, C24, C25, C35, C36, E9, E10, C33, C32, resistors R1, R59, R60, R55, R56, R57, and R54 are as follows: 100nF, 100nF, 1uf, 33pF, 100nF, 16V / 470uf, 10V / 1000uF, 50V / 330uf, 1KΩ, 5.1KΩ, 2KΩ, 1KΩ, 200Ω, 51Ω, and 200Ω.

[0150] As shown in Figures 4(a) and (b), the gas control circuit includes:

[0151] Capacitors C2, C3, C4, C5, C39, and C40; terminal block P2, terminal block P9, and terminal block P10; driver chip U20, driver chip U2, and driver chip U3.

[0152] Resistor R2 and terminal block P8;

[0153] Capacitors C2, C3, C4, C5, C39, and C40; terminal block P2, terminal block P9, and terminal block P10; driver chip U20, driver chip U2, and driver chip U3.

[0154] Pin 1 of the driver chip U20 is connected to the negative terminal of diode D35;

[0155] Pin 2 of the driver chip U20 is connected to pin 2 of the connector P2;

[0156] Pin 3 of the driver chip U20 is connected to pin 1 of the connector P2;

[0157] Pin 4 of the driver chip U20 is grounded;

[0158] Pin 5 of the driver chip U20 is connected to pin 3 of the power chip U10;

[0159] Pin 6 of the driver chip U20 is connected to pin 10 of the main control chip U26;

[0160] Pin 7 of the driver chip U20 is connected to pin 11 of the main control chip U26;

[0161] Pin 8 of the driver chip U20 is connected to pin 12 of the main control chip U26;

[0162] Pin 1 of the driver chip U2 is connected to the negative terminal of diode D35;

[0163] Pin 2 of the driver chip U2 is connected to pin 2 of the connector P9;

[0164] Pin 3 of the driver chip U2 is connected to pin 1 of the connector P9;

[0165] Pin 4 of the driver chip U2 is grounded;

[0166] Pin 5 of the driver chip U2 is connected to pin 3 of the power chip U10;

[0167] Pin 6 of the driver chip U2 is connected to pin 10 of the main control chip U26;

[0168] Pin 7 of the driver chip U2 is connected to pin 13 of the main control chip U26;

[0169] The 8th pin of the driver chip U2 is connected to the 14th pin of the main control chip U26;

[0170] Pin 1 of the driver chip U3 is connected to the negative terminal of diode D35;

[0171] Pin 2 of the driver chip U3 is connected to pin 2 of the connector P10;

[0172] Pin 3 of the driver chip U3 is connected to pin 1 of the connector P10;

[0173] Pin 4 of the driver chip U3 is grounded;

[0174] Pin 5 of the driver chip U3 is connected to pin 3 of the power chip U10;

[0175] Pin 6 of the driver chip U3 is connected to pin 10 of the main control chip U26;

[0176] Pin 7 of the driver chip U3 is connected to pin 34 of the main control chip U26;

[0177] The 8th pin of the driver chip U3 is connected to the 25th pin of the main control chip U26;

[0178] Pin 1 of terminal block P8 is connected to pin 45 of main control chip U26;

[0179] Pin 2 of terminal block P8 is grounded;

[0180] Pin 3 of terminal block P8 is connected to pin 44 of main control chip U26 and one end of resistor R2; the other end of resistor R2 is connected to VCC.

[0181] The model numbers of terminal block P2, terminal block P9, terminal block P10, driver chip U20, driver chip U2, and driver chip U3 are P5.0-2p, P5.0-2p, P5.0-2p, DRV8837, DRV8837, and DRV8837, respectively.

[0182] The values ​​of capacitors C2, C3, C4, C5, C39, and C40 are 100nf, 100nf, 100nf, 100nf, 100nf, and 100nf, respectively.

[0183] The terminal block P2 is model P5.0-3p; the resistor R2 is 4.K.

[0184] As shown in Figures 5(a) and (b), the human-computer interaction circuit includes:

[0185] Driver chip U25;

[0186] Resistor R25 and button P11;

[0187] Pin 1 of the driver chip U25 is left floating;

[0188] Pins 2 and 8 of the driver chip U25 are connected to pins 64 and 67 of the main control chip U26.

[0189] Pin 3 of the driver chip U25 is left floating;

[0190] Pin 4 of the driver chip U25 is connected to pin 53 of the main control chip U26;

[0191] Pin 5 of the driver chip U25 is connected to pin 54 of the main control chip U26;

[0192] Pin 6 of the driver chip U25 is connected to pin 55 of the main control chip U26;

[0193] Pin 7 of the driver chip U25 is connected to pin 56 of the main control chip U26;

[0194] Pin 9 of the driver chip U25 is connected to pin 52 of the main control chip U26;

[0195] Pin 10 of the driver chip U25 is grounded;

[0196] Pin 1 of button P11 is grounded;

[0197] Pin 2 of button P11 is connected to one end of resistor R58, and the other end of resistor R58 is connected to pins 64 and 67 of the main control chip U26.

[0198] The driver chip U25 is model DRV8837; the button P11 is model Header2; and the resistor R58 has a value of 2MΩ.

[0199] like Figure 6 As shown, the storage circuit includes:

[0200] Resistor R122, resistor R123, capacitor C76, and memory chip U29;

[0201] One end of capacitor C76 and pins 1, 2, 3, and 4 of memory chip U29 are grounded together;

[0202] The other end of capacitor C76, pin 8 of memory chip U29, one end of resistor R122, one end of resistor R123, and pin 18 of controller chip U26 are connected together.

[0203] Pin 7 of the memory chip U29 is grounded;

[0204] Pin 5 of memory chip U29 is connected to the other end of resistor R122;

[0205] Pin 6 of memory chip U29 is connected to the other end of resistor R123.

[0206] Among them, the model of memory chip U29 is AT24; the values ​​of resistor R122, resistor R123, and capacitor C76 are 10KΩ, 10KΩ, and 100nF, respectively.

[0207] like Figure 7 As shown, the near-end communication circuit includes:

[0208] Communication chip U23 and capacitor C55;

[0209] Pin 1 of the communication chip U23 is connected to pin 6 of the main control chip U26;

[0210] Pins 2 and 3 of the communication chip U23 are connected to pin 8 of the main control chip U26;

[0211] Pin 4 of the communication chip U23 is connected to pin 7 of the main control chip U26;

[0212] Pin 5 of the communication chip U23 is grounded;

[0213] Pins 6 and 7 of the communication chip U23 are left floating;

[0214] The 8 pins of the communication chip U23 and one end of the capacitor C55 are connected to the 64 pins of the main control chip U26, and the other end of the capacitor C55 is grounded.

[0215] The communication chip U23 is model MAX485, and the capacitor C55 has a value of 100nF.

[0216] As shown in Figures 8(a) and (b), the remote communication circuit includes:

[0217] Remote transmission chip U11, resistors R48 and R49, transistor Q12, resistor R50, phone card J11, capacitor C37, resistors R57, R58, R59, capacitors C38, C39, C40, and antenna JP2.

[0218] Remote transmission chip U11, resistors R48 and R49, transistor Q12, resistor R50, phone card J11, capacitor C37, resistors R57, R58, R59, capacitors C38, C39, C40, and antenna JP2.

[0219] One end of resistor R48 is connected to pin 4 of the main control chip U26; the other end of resistor R48 is connected to one end of resistor R49 and pin 18 of the remote transmission chip U11; the other end of resistor R49 is grounded.

[0220] The base of transistor Q12 is connected to pin 13 of remote transmission chip U11;

[0221] The emitter of transistor Q12 is connected to pin 19 of remote transmission chip U19;

[0222] The collector of transistor Q12 is connected to one end of resistor R50 and pin 3 of main control chip U26.

[0223] The other end of resistor R50 is connected to pin 72 of remote transmission chip U11;

[0224] Pin 1 of the phone card J11 is connected to one end of capacitor C37, and the other end of capacitor C37 is grounded together with pin 4 of the phone card J11.

[0225] Pin 2 of the phone card J11 is connected to one end of resistor R57, and the other end of resistor R57, one end of capacitor C40, and pin 25 of remote transmission chip U11 are connected together.

[0226] The 3rd pin of the phone card J11 is connected to one end of the resistor R58, and is also connected to the other end of the resistor R58, one end of the capacitor C39, and the 24th pin of the remote transmission chip U11.

[0227] Pin 5 of phone card J11 is left floating;

[0228] One end of the 6-pin resistor R59 of the phone card J11 is connected, and the other end of the resistor R59 is connected to one end of the capacitor C38 and pin 23 of the remote transmission chip U11.

[0229] The other ends of capacitors C38, C39, and C40 are grounded respectively.

[0230] Pins 9 and 10 of the remote transmission chip U11 are connected to a single point, which is connected to pin 4 of the power supply chip U15.

[0231] Pins 1, 2, 4, 5, 7, and 8 of the remote transmission chip U11 are all connected to and grounded;

[0232] Pins 32, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 55, 57 and 60 of the remote transmission chip U11 are all grounded;

[0233] Pins 63, 65, 68, 70, and 86 of the remote transmission chip U11 are all grounded.

[0234] Pin 96 of the remote transmission chip U11 is connected to pin 2 of the antenna JP2, and pin 1 of the antenna JP2 is grounded.

[0235] Among them, the models of transistor Q12, remote transmission chip U11, telephone card J11 and antenna JP2 are C86932, MIC615, MOLEX-91128-SIM508C and TQX-900, respectively;

[0236] The values ​​of capacitors C37, C38, C39, C40, resistors R48, R49, R50, R57, R58, and R59 are 100 nF, 33 pF, 33 pF, 1KΩ, 1KΩ, 10KΩ, 22Ω, 22Ω, and 22Ω, respectively.

[0237] The power management circuit in Figure 3(a) is used to convert AC mains power to DC power when connected, so that it can be used for power supply of different modules after subsequent voltage conversion; the power management circuit in Figure 3(b) is used to connect to the external solar power source, so that it can be used for power supply of different modules after subsequent voltage conversion; the power pipeline circuit in Figure 3(c) is used to convert the external power supply to the equipment module after initial voltage reduction. The gas control circuit in Figure 4(a) selects different concentrations of gas for detection by controlling the main controller pins; the gas control circuit in Figure 4(b) detects the gas pressure in the gas cylinder through the IIC interface P8 to ensure real-time monitoring of the gas usage status in the gas cylinder; the human-machine interaction circuit in Figure 5(a) is the interface for displaying various detection parameters and detection status during detection; the human-machine interaction circuit in Figure 5(b) allows the button to switch different LCD display information and understand the LCD data content. Figure 6 The storage chip stores detection data, detection strategies before detection, and upload information during the upload process, among other device data. Figure 7 The near-end communication circuit is used to read data during detection when different combustible gas detectors are detected; the data processing chip in the remote communication circuit of Figure 8(a); the serial port data conversion in the remote communication circuit of Figure 8(b) to exchange data between the main controller and the remote data processing chip; the telephone card used for calculating traffic costs during remote data transmission and reception in the remote communication circuit of Figure 8(c).

Claims

1. An online detection device for a combustible gas alarm probe, characterized in that, It includes the main control chip U26, power management circuit, gas control circuit, human-machine interaction circuit, storage circuit, near-end communication circuit and long-range communication circuit; The power management circuit is connected to the main control chip U26, the gas control circuit, the human-machine interaction circuit, the storage circuit, the near-end communication circuit, and the long-range communication circuit, respectively. The main control chip U26 is also connected to the gas control circuit, human-machine interaction circuit, storage circuit, near-end communication circuit and remote communication circuit respectively; The main control chip U26 described above is model FM33LG0x8; The power management circuit includes: Power supply J19, capacitor E8, capacitor C33, diode D37, light-emitting diode D39, resistor R61, and step-down chip U14; Power supply J20, resistor R69, diode D43, diode D44, and LED D46; Capacitors C34, C24, C25, C35, C36, E9, E10, and C33; resistors R1, R59, R60, R55, R56, R57, and R54; diodes D41, D42, D35, and D40; power supply chip U12, U15, and U13; and inductor L6. Capacitors C26, C27, and C28, and power chip U10; The first terminal of power supply J19 is connected to pin 1 of step-down chip U14, and the second terminal of power supply J19 is connected to pin 2 of step-down chip U14; pin 3 of step-down chip U14 is grounded together with the negative terminal of capacitor E8 and one end of capacitor C33; pin 4 of step-down chip U14 is connected together with the positive terminal of capacitor E8, the other end of capacitor C33, and the positive terminal of diode D37; the negative terminal of diode D37 is connected to the positive terminal of LED D39 through resistor R61, and the negative terminal of LED D39 is grounded; The first terminal of the power supply J20 is grounded, and the second terminal of the power supply J20 is connected to one end of the resistor R69, the positive terminal of the diode D43, and the positive terminal of the diode D44. The other end of the resistor R69 is connected to the positive terminal of the light-emitting diode D46, and the negative terminal of the light-emitting diode D46 is grounded. The negative terminal of diode D35 is connected to the gas control circuit, and the positive terminal of diode D35 is connected to one end of capacitor C25, one end of resistor R54, and pin 2 of power chip U12; pin 1 of power chip U12 is connected to the other end of resistor R54 and one end of resistor R57; the other end of resistor R57 is connected in series with resistors R56 and R55, and the other end of resistor R55 is grounded together with one end of capacitor C24. The other end of capacitor C24 is connected to pin 3 of power chip U12, the negative terminal of diode D41, one end of capacitor C34, the negative terminals of diodes D43 and D44, the negative terminal of diode D37, the positive terminal of capacitor E11, and pin 1 of power chip U15. The power chip U12 has four pins connected to one end of resistor R1 and one end of resistor R59; the other end of resistor R1 is grounded; and the other end of resistor R59 is connected to one end of resistor R60. The other end of the resistor R60 is connected to the positive terminal of diode D40, the positive terminal of capacitor E10, the positive terminal of capacitor E9, one end of capacitor C35, one end of capacitor C36, and one end of inductor L6; the other end of the inductor L6 is connected to pin 2 of power chip U12 and the negative terminal of diode D42. The positive terminal of diode D41, the other end of capacitor C34, the negative terminal of capacitor E11, pins 3 and 5 of power chip U12, the positive terminal of diode D42, the other end of capacitor C35, the other end of capacitor C36, the negative terminals of capacitor E9 and capacitor E10 are all grounded. The negative terminal of diode D40 is connected to one end of capacitor C26 and pin 2 of power chip U10. The other end of capacitor C26 is grounded together with pin 1 of power chip U10, one end of capacitor C27, and one end of capacitor C28. Pin 3 of the power chip U10, along with the other end of capacitor C27 and capacitor C28, are connected to the gas detection circuit. The gas control circuit includes: Capacitors C2, C3, C4, C5, C39, and C40; terminal block P2, terminal block P9, and terminal block P10; driver chip U20, driver chip U2, and driver chip U3. Resistor R2 and terminal block P8; The capacitors C2, C3, C4, C5, C39, C40, terminal block P2, terminal block P9, terminal block P10, driver chip U20, driver chip U2, and driver chip U3 are mentioned. Pin 1 of the driver chip U20 is connected to the negative terminal of diode D35; Pin 2 of the driver chip U20 is connected to pin 2 of the connector P2; Pin 3 of the driver chip U20 is connected to pin 1 of the connector P2; The driver chip U20 has four pins grounded. Pin 5 of the driver chip U20 is connected to pin 3 of the power chip U10; Pin 6 of the driver chip U20 is connected to pin 10 of the main control chip U26; Pin 7 of the driver chip U20 is connected to pin 11 of the main control chip U26; The 8th pin of the driver chip U20 is connected to the 12th pin of the main control chip U26; Pin 1 of the driver chip U2 is connected to the negative terminal of diode D35; Pin 2 of the driver chip U2 is connected to pin 2 of the connector P9; Pin 3 of the driver chip U2 is connected to pin 1 of the connector P9; The driver chip U2 has four pins grounded. Pin 5 of the driver chip U2 is connected to pin 3 of the power chip U10; Pin 6 of the driver chip U2 is connected to pin 10 of the main control chip U26; Pin 7 of the driver chip U2 is connected to pin 13 of the main control chip U26; The 8th pin of the driver chip U2 is connected to the 14th pin of the main control chip U26; Pin 1 of the driver chip U3 is connected to the negative terminal of diode D35; Pin 2 of the driver chip U3 is connected to pin 2 of the connector P10; Pin 3 of the driver chip U3 is connected to pin 1 of the connector P10. The driver chip U3 has four pins grounded. Pin 5 of the driver chip U3 is connected to pin 3 of the power chip U10; The 6th pin of the driver chip U3 is connected to the 10th pin of the main control chip U26; Pin 7 of the driver chip U3 is connected to pin 34 of the main control chip U26; The 8th pin of the driver chip U3 is connected to the 25th pin of the main control chip U26; Pin 1 of the terminal block P8 is connected to pin 45 of the main control chip U26; Pin 2 of the terminal block P8 is grounded; Pin 3 of the terminal block P8 is connected to pin 44 of the main control chip U26 and one end of the resistor R2; the other end of the resistor R2 is connected to pin 63 of the main control chip U26. The human-computer interaction circuit includes: Driver chip U25; Resistor R25 and button P11; Pin 1 of the driver chip U25 is left floating; Pins 2 and 8 of the driver chip U25 are connected to pins 64 and 67 of the main control chip U26. Pin 3 of the driver chip U25 is left floating; Pin 4 of the driver chip U25 is connected to pin 53 of the main control chip U26; Pin 5 of the driver chip U25 is connected to pin 54 of the main control chip U26; The 6th pin of the driver chip U25 is connected to the 55th pin of the main control chip U26; Pin 7 of the driver chip U25 is connected to pin 56 of the main control chip U26; Pin 9 of the driver chip U25 is connected to pin 52 of the main control chip U26; Pin 10 of the aforementioned driver chip U25 is grounded; Pin 1 of the aforementioned button P11 is grounded; The 2nd pin of the button P11 is connected to one end of the resistor R58, and the other end of the resistor R58 is connected to pins 64 and 67 of the main control chip U26.

2. The online detection device for combustible gas alarm probes as described in claim 1, characterized in that, The storage circuit includes: Resistor R122, resistor R123, capacitor C76, and memory chip U29; One end of the capacitor C76 and pins 1, 2, 3, and 4 of the memory chip U29 are grounded together; The other end of the capacitor C76, pin 8 of the memory chip U29, one end of resistor R122, one end of resistor R123, and pin 18 of the controller chip U26 are connected together. Pin 7 of the aforementioned memory chip U29 is grounded; Pin 5 of the memory chip U29 is connected to the other end of resistor R122; The 6 pins of the memory chip U29 are connected to the other end of the resistor R123.

3. The online detection device for combustible gas alarm probes as described in claim 2, characterized in that, The near-end communication circuit includes: Communication chip U23 and capacitor C55; Pin 1 of the communication chip U23 is connected to pin 6 of the main control chip U26; Pins 2 and 3 of the communication chip U23 are connected to pin 8 of the main control chip U26; The 4th pin of the communication chip U23 is connected to the 7th pin of the main control chip U26; Pin 5 of the communication chip U23 is grounded; Pins 6 and 7 of the communication chip U23 are left floating. The 8 pins of the communication chip U23 and one end of the capacitor C55 are connected to the 64 pins of the main control chip U26, and the other end of the capacitor C55 is grounded.

4. The online detection device for combustible gas alarm probes as described in claim 3, characterized in that, The remote communication circuit includes: Remote transmission chip U11, resistors R48 and R49, transistor Q12, resistor R50, phone card J11, capacitor C37, resistors R57, R58, R59, capacitors C38, C39, C40, and antenna JP2. Remote transmission chip U11, resistors R48 and R49, transistor Q12, resistor R50, phone card J11, capacitor C37, resistors R57, R58, R59, capacitors C38, C39, C40, and antenna JP2. One end of resistor R48 is connected to pin 4 of the main control chip U26; the other end of resistor R48 is connected to one end of resistor R49 and pin 18 of the remote transmission chip U11; the other end of resistor R49 is grounded. The base of the transistor Q12 is connected to pin 13 of the remote transmission chip U11; The emitter of transistor Q12 is connected to pin 19 of remote transmission chip U19; The collector of the transistor Q12 is connected to one end of the resistor R50 and pin 3 of the main control chip U26. The other end of the resistor R50 is connected to pin 72 of the remote transmission chip U11; The 1st pin of the phone card J11 is connected to one end of the capacitor C37, and the other end of the capacitor C37 is grounded together with the 4th pin of the phone card J11. The 2nd pin of the telephone card J11 is connected to one end of the resistor R57, and the other end of the resistor R57, one end of the capacitor C40, and the 25th pin of the remote transmission chip U11 are connected together. The 3rd pin of the telephone card J11 is connected to one end of the resistor R58, and is also connected to the other end of the resistor R58, one end of the capacitor C39, and the 24th pin of the remote transmission chip U11. Pin 5 of the aforementioned phone card J11 is left floating; One end of the 6-pin resistor R59 of the telephone card J11 is connected, and the other end of the resistor R59 is connected to one end of the capacitor C38 and pin 23 of the remote transmission chip U11. The other ends of capacitors C38, C39, and C40 are respectively grounded; Pins 9 and 10 of the remote transmission chip U11 are connected to a single point, which is connected to pin 4 of the power supply chip U15. Pins 1, 2, 4, 5, 7, and 8 of the aforementioned remote transmission chip U11 are all connected to and grounded; The remote transmission chip U11 has its 32, 42, 43, 44, 45, 46, 47, 48, 49, 50, 51, 55, 57 and 60 pins grounded together; The 63, 65, 68, 70 and 86 pins of the aforementioned remote transmission chip U11 are all grounded; The 96th pin of the remote transmission chip U11 is connected to the 2nd pin of the antenna JP2, and the 1st pin of the antenna JP2 is grounded.

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