Fire sensitivity test execution monitoring system
By designing a fire sensitivity test execution monitoring system, remotely controlling electrical equipment, and real-time monitoring of smoke density and detector status, human error and safety issues in fire sensitivity tests are resolved, and the objectivity and safety of test results are achieved.
Patent Information
- Application Number
- CN202422119455.7
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-08-30
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-08-30
AI Technical Summary
During the fire sensitivity test, the existing technology has the problem that the test results are easily affected by human factors and the health of the test personnel is damaged.
A fire sensitivity test execution monitoring system is designed, which includes a host computer, a smoke density data acquisition module, an electrical equipment control module, a detector alarm status monitoring module, a manual operation module, and a test smoke image monitoring module. Through CAN bus communication connection, remote control and data acquisition are realized, human errors are eliminated, and the test personnel are isolated from the combustion space.
The objectivity and safety of the test results are achieved. By remotely controlling electrical equipment, smoke density and detector status are monitored in real time, human errors are eliminated, and the safety of test personnel is guaranteed.
Smart Images
Figure CN223362718U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of fire sensitivity testing, in particular to an execution monitoring system for a fire sensitivity testing process of a smoke fire detector. Background Art
[0002] my country's Fire Protection Law stipulates that the fire protection design and construction of construction projects must comply with the national engineering construction fire protection technical standards. Therefore, a large number of infrastructure, public places, high-rise buildings, etc. need to install smoke fire detectors.
[0003] Among the technical requirements stipulated in domestic and international standards for current smoke fire detector series products, the fire sensitivity test is used to detect the response performance of the detector under simulated real fire conditions. The standards stipulate that the fire sensitivity test needs to be carried out in a standard combustion test room. The test requires generating smoke by igniting standard substances, collecting indoor smoke density data in real time, setting the effective range of smoke density data, and evaluating the effectiveness of the test smoke and the fire response performance of the detector. During the test execution, it is necessary to remotely monitor data such as indoor real-time smoke density, indoor electrical equipment operating status, and detector alarm status. Since the execution technology of the fire sensitivity test is relatively complex, and each execution link involves a large amount of human resources and equipment resources, it is very easy for the test results to deviate due to subjective factors of the test personnel. At the same time, the test personnel work in the combustion room for a long time, which is easy to cause personal health damage. Utility Model Content
[0004] The utility model provides a fire sensitivity test process monitoring system, which helps test personnel to remotely send control signals, automatically monitor the equipment operation status, monitor the detector alarm status, and collect smoke density data in real time. The main technical solutions adopted by the utility model include:
[0005] A fire sensitivity test execution monitoring system includes a host computer, a smoke density data acquisition module, an electrical equipment control module, a detector alarm status monitoring module, a manual operation module, and a test smoke image monitoring module. The smoke density data acquisition module, the electrical equipment control module, the detector alarm status monitoring module, the manual operation module, and the test smoke image monitoring module are all connected to the host computer via a CAN bus.
[0006] The smoke density data acquisition module collects the smoke density, temperature and air flow velocity parameters in the combustion chamber in real time and transmits them to the host computer for display;
[0007] The detector alarm status monitoring module monitors the status of the detector indicator light in real time and transmits the detector alarm signal to the host computer;
[0008] The test smoke image monitoring module collects real-time smoke diffusion image data and transmits it to the host computer and issues a smoke deviation warning signal;
[0009] The host computer receives the control instructions sent by the manual operation module and forwards them to the electrical equipment control module, controls the start, stop, feedback, fault and alarm status of the electrical equipment in the combustion chamber, and transmits them to the host computer in the form of detector indicator lights for display.
[0010] The smoke density data acquisition module provides an analog quantity acquisition interface, which is respectively connected to an optical smoke density meter, an ion smoke density meter, an anemometer, and a thermocouple installed on the ceiling of the combustion chamber.
[0011] The optical smoke density meter and ion smoke density meter are set on the ceiling of the combustion chamber and on a circle with a radius of three meters and the center point of the combustion test chamber as the center; the thermocouple is arranged at the center of the ceiling of the combustion test chamber.
[0012] The electrical equipment in the combustion chamber includes an indoor lighting power supply, an indoor exhaust system, a lifting installation platform and a test fire ignition device. The electrical equipment control module receives operating status feedback and fault signals from the lighting power supply, indoor exhaust system and test fire ignition device in the combustion chamber, and uploads them to the host computer for display.
[0013] The lifting installation platform is arranged on the ceiling of the combustion chamber, and the detector is arranged on the lifting installation platform.
[0014] The manual operation module is arranged outside the combustion chamber. The manual operation module is designed as a matrix keyboard. Each button is an integrated button with a multi-color indicator light. The buttons of the manual operation module correspond to sending start and stop control signals of indoor lighting power supply, indoor exhaust system, lifting and lowering of the lifting installation platform, and test fire ignition device to the electrical equipment control module.
[0015] The detector alarm status monitoring module includes an optical fiber sensor and an optical signal processing unit. The optical fiber sensor is attached to the surface of the detector working condition indicator light. The signal processing unit determines whether the detector has entered the fire alarm state by capturing the change in the indicator light state, and transmits the indicator light state and the detector alarm signal to the host computer.
[0016] The test smoke image monitoring module is arranged on the floor of the combustion chamber.
[0017] During the period when the host computer sets the expected smoke density for the test, the host computer displays the real-time smoke density data in the combustion chamber in a graphical interface.
[0018] The utility model has the following beneficial effects and advantages:
[0019] The utility model can achieve effective isolation between test personnel and combustion space, remotely complete indoor electrical equipment control through manual operation of the interactive module, and centrally display real-time smoke density-related data and the status of each controlled electrical equipment through the host computer; secondly, the test smoke image monitoring system and the detector alarm status monitoring module can provide objective criteria for monitoring the validity of test data and the detector sensitivity test results, so as to eliminate unexpected errors caused by observation by test personnel. BRIEF DESCRIPTION OF THE DRAWINGS
[0020] Figure 1 This is a flow chart of the fire sensitivity test process monitoring system of the controller of this utility model. DETAILED DESCRIPTION
[0021] The following further describes the present invention with reference to the accompanying drawings. The fire detector sensitivity test is conducted in a combustion chamber environment with dimensions of 10 meters long, 8 meters wide, and 4 meters high. The ceiling is a horizontal plane and is made of heat-resistant and insulating material (this section is regulated by the national standard GB4715-2024, "Smoke Fire Detectors").
[0022] The combustion chamber ceiling is equipped with a detector lifting and installation platform to facilitate the fixation and adjustment of the detector height without damaging the laboratory ceiling; the optical smoke density meter and the ion smoke density meter are arranged on a circle with a radius of three meters with the center point of the combustion test chamber as the center; the thermocouple is arranged at the center of the combustion test chamber ceiling to measure the indoor temperature; an exhaust system is arranged in the combustion chamber to exhaust the test smoke generated by the test; the anemometer is arranged at the center of the combustion chamber to collect the indoor wind speed during the test and monitor the impact of indoor air flow on the spread trend of the test smoke; the host computer and manual operation console are arranged outside the combustion chamber for test personnel to remotely monitor the test process and operate electrical equipment, so as to achieve effective isolation between test personnel and the combustion space.
[0023] like Figure 1 As shown, the utility model is a fire sensitivity test execution monitoring system, including a host computer, a smoke density data acquisition module, an electrical equipment control module, a detector alarm status monitoring module, a manual operation module and a test smoke image monitoring module, wherein the smoke density data acquisition module, the electrical equipment control module, the detector alarm status monitoring module, the manual operation module and the test smoke image monitoring module are all connected to the host computer via a CAN bus;
[0024] The smoke density data acquisition module collects the smoke density, temperature and air flow velocity parameters in the combustion chamber in real time and transmits them to the host computer for display;
[0025] The detector alarm status monitoring module monitors the status of the detector indicator light in real time and transmits the detector alarm signal to the host computer;
[0026] The test smoke image monitoring module collects real-time smoke diffusion image data and transmits it to the host computer and issues a smoke deviation warning signal;
[0027] The host computer receives the control instructions sent by the manual operation module and forwards them to the electrical equipment control module, controls the start, stop, feedback, fault and alarm status of the electrical equipment in the combustion chamber, and transmits them to the host computer in the form of detector indicator lights for display.
[0028] Furthermore, the smoke density data acquisition module provides an analog quantity acquisition interface, which is respectively connected to the optical smoke density meter, the ion smoke density meter and the thermocouple installed on the ceiling of the combustion chamber; the optical smoke density meter and the ion smoke density meter are arranged on the ceiling of the combustion chamber, and on a circle with a radius of three meters and the center point of the combustion test chamber as the center; the thermocouple is arranged at the center of the ceiling of the combustion test chamber; the smoke density data acquisition module realizes the calculation of the voltage signal transmitted back in real time by the optical smoke density meter and the ion smoke density meter into the smoke density data required for the test, and realizes the calculation of the voltage signal transmitted back by the thermocouple into the real-time temperature data of the combustion chamber ceiling, thereby realizing ceiling temperature monitoring.
[0029] Furthermore, the electrical equipment in the combustion chamber includes an indoor lighting power supply, an indoor exhaust system, a lifting installation platform and a test fire ignition device. The electrical equipment control module receives operating status feedback and fault signals of the lighting power supply, indoor exhaust system and test fire ignition device in the combustion chamber, and uploads them to the host computer for display.
[0030] Furthermore, the manual operation module is arranged outside the combustion chamber. The manual operation module is designed as a matrix keyboard, and each button is an integrated button with a multi-color indicator light. The buttons of the manual operation module correspond to the start and stop control signals of the indoor lighting power supply, indoor exhaust system, lifting and lowering of the lifting installation platform, and the test fire ignition device to the electrical equipment control module.
[0031] Furthermore, the detector alarm status monitoring module includes an optical fiber sensor and an optical signal processing unit. The optical fiber sensor is attached to the surface of the detector working condition indicator light. The signal processing unit determines whether the detector has entered the fire alarm state by capturing the change in the indicator light state, and transmits the indicator light state and the detector alarm signal to the host computer.
[0032] The test smoke image monitoring module is arranged on the floor of the combustion chamber.
[0033] During the period when the host computer sets the expected smoke density for the test, the host computer displays the real-time smoke density data in the combustion chamber in a graphical interface.
[0034] When using the fire sensitivity test execution monitoring system of the present invention to conduct a fire sensitivity test on the detector, the tester powers on all modules in the system and the system enters normal working state. At this time, the smoke density data acquisition module begins to collect smoke density data, temperature, and air flow velocity parameters in the initial state of the combustion chamber through the optical smoke density meter, ion smoke density meter, thermocouple and anemometer, and uploads them to the host computer for display.
[0035] The test personnel operate the manual operation interactive module to lower the lifting installation platform to an appropriate height. At this time, the upper computer can obtain the real-time height of the lifting platform through the electrical equipment control module. After it descends to the appropriate height, the test personnel stop the lifting installation platform from descending, enter the combustion chamber and install the test smoke detector on the lifting platform. At the same time, the test personnel apply the optical fiber probe of the detector alarm status monitoring module to the surface of the indicator light of each test detector, and then raise the lifting platform. After the platform rises to the specified position on the ceiling, it stops automatically.
[0036] After completing the installation of the detector, the test personnel judge whether the indoor smoke density is at zero by observing the value displayed on the host computer. If it has not reached zero, the test personnel operate the manual operation interaction module (press the indoor exhaust system start button) to send the start instruction to the host computer. The host computer sends the control start instruction to the electrical equipment control module to turn on the exhaust system. After the exhaust system is successfully turned on, the startup status feedback signal is sent back to the electrical equipment control module, and this feedback signal is uploaded to the host computer for display; when the initial smoke density in the combustion chamber drops to zero, the test personnel operate the manual operation interaction module to stop the exhaust system. At this time, the test personnel place the standard combustion material on the test fire ignition device, and then leave the combustion chamber, close the door to keep the combustion chamber closed, and turn off the indoor lighting system to keep the room dark.
[0037] The tester operates the host computer to set the desired smoke density valid range for the test process. They can also monitor whether the indoor smoke density remains within the valid range during the test and determine whether the smoke density is within the valid range at the time the detector alarm is triggered. (The valid range is an evaluation indicator for determining whether the test smoke is valid. It is composed of two two-dimensional coordinate function lines: the time-optical smoke density curve and the optical smoke density-ion smoke density curve. Note: This section is regulated by the national standard. That is, during the test, if the indoor smoke density data exceeds the requirements of either of these two ranges, the test is considered invalid. These two ranges can represent the diffusion trend of the test smoke.)
[0038] The test personnel remotely operate the test fire ignition device to start the test, and at the same time operate the host computer to start recording the smoke density data (optical smoke density, ion smoke density) during the test process, and plot the data of each sampling cycle on the host computer for display. The test personnel can observe whether the test smoke is within the specified effective range through visual data records.
[0039] After the test begins, the test smoke image monitoring module (arranged on the ground at the midpoint of the long side of the combustion chamber, observing in the direction of test smoke generation) will collect real-time smoke diffusion image data and transmit it to the host computer. After image background removal and binarization processing, the smoke image can be segmented. Under the expected state, the smoke image trend should rise vertically to the ceiling and then diffuse. If air flow occurs in the room, the smoke image will deviate from the expected trend. At this time, the image monitoring module will issue a smoke deviation warning signal to remind the test personnel of the risk of test smoke failure, so that the test personnel can promptly investigate and deal with it.
[0040] During the test, the detector alarm status monitoring module monitors the status of the detector indicator light in real time. When it detects that the detector sends an alarm signal, it immediately instructs the upper computer to alarm the detector with the corresponding number and records the smoke density data in the combustion chamber at the current moment. As the test smoke density continues to spread, the termination condition of the test will be triggered. If the detector still does not send an alarm signal before the test termination condition is met, the detector is judged to be unqualified.
[0041] After the test is terminated, the test personnel open the indoor exhaust system to exhaust the indoor smoke, and then enter the combustion chamber to dismantle the test detector.
[0042] The utility model can achieve effective isolation between test personnel and combustion space, remotely complete indoor electrical equipment control through manual operation of the interactive module, and centrally display real-time smoke density-related data and the status of each controlled electrical equipment through the host computer; secondly, the test smoke image monitoring system and the detector alarm status monitoring module can provide objective criteria for monitoring the validity of test data and the detector sensitivity test results, so as to eliminate unexpected errors caused by observation by test personnel.
Claims
1. A fire sensitivity test execution monitoring system, characterized by: It includes a host computer, a smoke density data acquisition module, an electrical equipment control module, a detector alarm status monitoring module, a manual operation module and a test smoke image monitoring module, wherein the smoke density data acquisition module, the electrical equipment control module, the detector alarm status monitoring module, the manual operation module and the test smoke image monitoring module are all connected to the host computer via a CAN bus; The smoke density data acquisition module collects the smoke density, temperature and air flow velocity parameters in the combustion chamber in real time and transmits them to the host computer for display; The detector alarm status monitoring module monitors the status of the detector indicator light in real time and transmits the detector alarm signal to the host computer; The test smoke image monitoring module collects real-time smoke diffusion image data and transmits it to the host computer and issues a smoke deviation warning signal; The host computer receives the control instructions sent by the manual operation module and forwards them to the electrical equipment control module, controls the start, stop, feedback, fault and alarm status of the electrical equipment in the combustion chamber, and transmits them to the host computer in the form of detector indicator lights for display.
2. A fire sensitivity test execution monitoring system according to claim 1, characterized in that: The smoke density data acquisition module provides an analog quantity acquisition interface, which is respectively connected to an optical smoke density meter, an ion smoke density meter, an anemometer, and a thermocouple installed on the ceiling of the combustion chamber.
3. A fire sensitivity test execution monitoring system according to claim 2, characterized in that: The optical smoke density meter and ion smoke density meter are set on the ceiling of the combustion chamber and on a circle with a radius of three meters and the center point of the combustion test chamber as the center; the thermocouple is arranged at the center of the ceiling of the combustion test chamber.
4. A fire sensitivity test execution monitoring system according to claim 1, characterized in that: The electrical equipment in the combustion chamber includes an indoor lighting power supply, an indoor exhaust system, a lifting installation platform and a test fire ignition device. The electrical equipment control module receives operating status feedback and fault signals from the lighting power supply, indoor exhaust system and test fire ignition device in the combustion chamber, and uploads them to the host computer for display.
5. A fire sensitivity test execution monitoring system according to claim 4, characterized in that: The lifting installation platform is arranged on the ceiling of the combustion chamber, and the detector is arranged on the lifting installation platform.
6. A fire sensitivity test execution monitoring system according to claim 1, characterized in that: The manual operation module is arranged outside the combustion chamber. The manual operation module is designed as a matrix keyboard. Each button is an integrated button with a multi-color indicator light. The buttons of the manual operation module correspond to sending start and stop control signals of indoor lighting power supply, indoor exhaust system, lifting and lowering of the lifting installation platform, and test fire ignition device to the electrical equipment control module.
7. The fire sensitivity test execution monitoring system according to claim 1, characterized in that: The detector alarm status monitoring module includes an optical fiber sensor and an optical signal processing unit. The optical fiber sensor is attached to the surface of the detector working condition indicator light. The signal processing unit determines whether the detector has entered the fire alarm state by capturing the change in the indicator light state, and transmits the indicator light state and the detector alarm signal to the host computer.
8. The fire sensitivity test execution monitoring system according to claim 1, characterized in that: The test smoke image monitoring module is arranged on the floor of the combustion chamber.
9. The fire sensitivity test execution monitoring system according to claim 1, characterized in that: During the period when the host computer sets the expected smoke density for the test, the host computer displays the real-time smoke density data in the combustion chamber in a graphical interface.