A CO alarm with a matching digital bootstrap igniter

Abstract

The utility model discloses a CO alarm with the supporting digital bootstrap type igniter, and the utility model relates to gasoline generator technical field, including electrode tube Q2, electrode tube Q1 is connected with electrode tube Q2, and this connecting point exports detection signal LI_DIG to through the detection port foot and igniter singlechip connection. This CO alarm with the supporting digital bootstrap type igniter, CO alarm internal VCC gets electricity, and CO alarm singlechip mouth O_STOP and O_STOPF are all pulled low, at this time, Q1 electrode tube is conducted, and Q2 electrode tube is closed, and the LI_DIG output port is obtained a high level by VCC through Q1, and the digital igniter singlechip mouth connected with it identifies the high potential in 15 seconds, and continues to run. If CO alarm has the CO concentration too high alarm action, then will O_STOP and O_STOPF all pull high, at this time, the detection port foot is identified as low potential, and the igniter executes the flameout action, can better prevent the occurrence of the accident, has the effect that the safety is high.

Description

Technical Field

[0001] This utility model relates to the field of gasoline generator technology, specifically a CO alarm with a matching digital bootstrap igniter. Background Technology

[0002] A CO alarm (carbon monoxide alarm) is a safety device that detects the concentration of carbon monoxide (CO) in the environment and triggers an audible and visual alarm. It is mainly used to prevent carbon monoxide poisoning accidents in industrial and household settings.

[0003] A search of patent application number CN201921312965.9 reveals a CO alarm for generator sets. The CO alarm for generator sets includes a housing, a CO sensor, and a PCB board. The housing has a first vent and a second vent, and a receiving cavity. The PCB board is disposed within the receiving cavity, and the CO sensor is disposed on and electrically connected to the PCB board. The PCB board has a flow hole for gas flow, with the gas entering through the first vent, passing through the flow hole, and exiting through the second vent. The CO sensor is located along the gas flow path. This CO alarm for generator sets can detect the CO content around the generator set. During operation, gasoline generators emit large amounts of toxic gases, including high levels of carbon monoxide. Prolonged indoor use could lead to injury or death.

[0004] Further searching patent application number CN202121401705.6 reveals a CO alarm for generator protection, comprising: an MCU control unit U2 for signal analysis and processing, which is in a deep sleep state when the generator is not running, and enters a sleep plus timed wake-up state when the engine is running; a CO sensor detection unit U3 connected to the MCU control unit, which converts the CO concentration in the environment into a corresponding electrical signal and outputs it to the MCU control unit U2 for processing; an alarm prompting unit U4 connected to the MCU control unit, which provides alarm prompts for CO concentration and alarm malfunctions; a speed detection unit U5 connected to the MCU control unit, which collects the generator's operating status and simultaneously wakes the MCU control unit U2 from the deep sleep state to the normal operating state; an engine shutdown control unit U6 connected to the MCU control unit; and a battery power supply unit U1. During use, gasoline generators emit a large amount of toxic gases, including a high content of carbon monoxide. Prolonged indoor use may lead to personal injury or death. Utility Model Content

[0005] To address the shortcomings of existing technologies, this invention provides a CO alarm with a matching digital bootstrap igniter. When the internal VCC of the CO alarm is energized, both O_STOP and O_STOPF of the CO alarm's microcontroller are pulled low. At this time, electrode Q1 is turned on, and electrode Q2 is turned off. The LI_DIG output port receives a high level from VCC through Q1. The connected digital igniter's microcontroller detects this high potential within 15 seconds and continues operation. If the CO alarm triggers a high CO concentration alarm, both O_STOP and O_STOPF are pulled high. The detection port pin then detects a low potential, and the igniter performs an engine shutdown, effectively preventing accidents and providing high safety. This addresses the problem that gasoline generators emit large amounts of toxic gases, including high levels of carbon monoxide, which could cause injury or death if used indoors for extended periods.

[0006] To achieve the above objectives, this utility model is implemented through the following technical solution: a CO alarm with a matching digital bootstrap igniter, comprising:

[0007] A resistor RI, one end of which is connected to a power supply VCC;

[0008] Electrode Q1, one end of which is connected to resistor RI;

[0009] Resistor R2, one end of which is connected to receive the stop signal O_STOP, and resistor R2 is connected to electrode tube Q1 via a wire;

[0010] Resistor R3, one end of which is connected to receive a forced shutdown signal O_STOPF;

[0011] Resistor R4, one end of which is connected to ground GND;

[0012] Electrode Q2 is connected to electrode Q1, and the connection point outputs a detection signal LI_DIG, which is connected to the igniter microcontroller through the detection port pin.

[0013] Preferably, electrode tube Q1 and electrode tube Q2 are configured as transistors, and electrode tube Q2 is connected to ground GND.

[0014] Preferably, the resistor R4 is connected to the electrode tube Q2.

[0015] Preferably, the end of the resistor R3 furthest from the stop signal O_STOPF is connected to the electrode tube Q1.

[0016] Beneficial effects

[0017] This invention provides a CO alarm with a matching digital bootstrap igniter. Compared with the prior art, it has the following advantages:

[0018] 1. This CO alarm, equipped with a matching digital bootstrap igniter, energizes the internal VCC of the CO alarm. This pulls both O_STOP and O_STOPF low on the CO alarm's microcontroller port. At this time, transistor Q1 is on, and transistor Q2 is off. The LI_DIG output port receives a high level from VCC via Q1. The connected digital igniter's microcontroller port detects this high potential within 15 seconds and continues operation. If the CO alarm triggers a high CO concentration alarm, it pulls both O_STOP and O_STOPF high. The detection port pin then detects a low potential, and the igniter performs a flameout, effectively preventing accidents and providing high safety.

[0019] 2. The CO alarm with a matching digital bootstrap igniter requires a low-power design to meet requirements such as flashing lights after the generator stops. At this time, when both O_STOP and O_STOPF are high, VCC will not consume power through Q1. Attached Figure Description

[0020] Figure 1 This is the overall circuit schematic diagram of this utility model;

[0021] Figure 2 This is the pin logic diagram of the detection port of this utility model. Detailed Implementation

[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0023] Please see Figure 1-2 This utility model provides a technical solution: a CO alarm with a matching digital bootstrap igniter, comprising:

[0024] A resistor RI, one end of which is connected to a power supply VCC;

[0025] Electrode Q1, one end of which is connected to resistor RI;

[0026] Resistor R2, one end of which is connected to receive the stop signal O_STOP, and resistor R2 is connected to electrode tube Q1 via a wire;

[0027] Resistor R3, one end of which is connected to receive a forced shutdown signal O_STOPF;

[0028] Resistor R4, one end of which is connected to ground GND;

[0029] Electrode Q2 is connected to electrode Q1, and the connection point outputs a detection signal LI_DIG, which is connected to the igniter microcontroller through the detection port pin.

[0030] The electrode tubes Q1 and Q2 are configured as transistors, and the electrode tube Q2 is connected to ground GND.

[0031] The resistor R4 is connected to the electrode tube Q2.

[0032] The end of resistor R3 furthest from the stop signal O_STOPF is connected to electrode Q1.

[0033] During operation, after the generator starts, the internal VCC of the CO alarm is energized, and both O_STOP and O_STOPF of the CO alarm's microcontroller port are pulled low. At this time, electrode Q1 is turned on, electrode Q2 is turned off, and the LI_DIG output port receives a high level from VCC through Q1. The microcontroller port of the connected digital igniter detects the high potential within 15 seconds and continues to operate. If the CO alarm triggers an alarm for excessive CO concentration, both O_STOP and O_STOPF are pulled high. At this time, the detection port pin detects a low potential, and the igniter performs a flameout action, which can better prevent accidents and has a high safety effect. After the generator stops, in order to meet the requirements of flashing lights, a low power consumption design is required. At this time, with both O_STOP and O_STOPF high, VCC will not consume power through Q1.

[0034] Furthermore, any content not described in detail in this specification is existing technology known to those skilled in the art.

Claims

1. A CO alarm with a matching digital bootstrap igniter, characterized in that, include; A resistor RI, one end of which is connected to a power supply VCC; Electrode Q1, one end of which is connected to resistor RI; Resistor R2, one end of which is connected to receive the stop signal O_STOP, and resistor R2 is connected to electrode tube Q1 via a wire; Resistor R3, one end of which is connected to receive a forced shutdown signal O_STOPF; Resistor R4, one end of which is connected to ground GND; Electrode Q2 is connected to electrode Q1, and the connection point outputs a detection signal LI_DIG, which is connected to the igniter microcontroller through the detection port pin.

2. A CO alarm with a matching digital bootstrap igniter according to claim 1, characterized in that: The electrode tubes Q1 and Q2 are configured as transistors, and the electrode tube Q2 is connected to ground GND.

3. A CO alarm with a matching digital bootstrap igniter according to claim 1, characterized in that: The resistor R4 is connected to the electrode tube Q2.

4. A CO alarm with a matching digital bootstrap igniter according to claim 1, characterized in that: The end of resistor R3 furthest from the stop signal O_STOPF is connected to electrode Q1.

Images