CN112269008A - Portable detector simulation device and simulation method - Google Patents
Portable detector simulation device and simulation method Download PDFInfo
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- CN112269008A CN112269008A CN202011082305.3A CN202011082305A CN112269008A CN 112269008 A CN112269008 A CN 112269008A CN 202011082305 A CN202011082305 A CN 202011082305A CN 112269008 A CN112269008 A CN 112269008A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/22—Fuels; Explosives
- G01N33/225—Gaseous fuels, e.g. natural gas
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
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- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/0062—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display
- G01N33/0063—General constructional details of gas analysers, e.g. portable test equipment concerning the measuring method or the display, e.g. intermittent measurement or digital display using a threshold to release an alarm or displaying means
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N33/00—Investigating or analysing materials by specific methods not covered by groups G01N1/00 - G01N31/00
- G01N33/0004—Gaseous mixtures, e.g. polluted air
- G01N33/0009—General constructional details of gas analysers, e.g. portable test equipment
- G01N33/007—Arrangements to check the analyser
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- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B21/00—Alarms responsive to a single specified undesired or abnormal condition and not otherwise provided for
- G08B21/02—Alarms for ensuring the safety of persons
- G08B21/12—Alarms for ensuring the safety of persons responsive to undesired emission of substances, e.g. pollution alarms
- G08B21/16—Combustible gas alarms
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Abstract
The invention discloses a portable detector simulation device and a simulation method, wherein the portable detector simulation device comprises a computing device, and a touch screen and a warning lamp which are connected with the computing device, wherein: the touch screen is used for inputting, editing, displaying and inquiring the gas concentration, the alarm state and other parameters of the simulated gas detector, and is in communication connection with the computing device; the computing device is connected with a controller of the combustible gas alarm system through communication; the warning light is used for realizing the gas concentration parameter overrun warning of the detector. Through the measures, the circuit and the controller working condition of the whole combustible gas alarm system are directly detected by using the simulator before the detector is installed and put into operation, so that whether the circuit and the controller work normally can be diagnosed by using the simulator under the condition that the gas detector of the combustible gas alarm system is not actually connected, and the risks of complex wiring, high testing difficulty and easy-damage expensive gas detectors are avoided.
Description
Technical Field
The invention relates to a portable detector simulation device and a portable detector simulation method for a gas detector.
Background
A combustible gas alarm system generally includes a controller and a gas detector, and the controller and the gas detector generally communicate with each other in a wired manner, and the wired manner is a bus manner in many cases. The mode can save wiring cost, the detectors are distributed at each point, but due to the relationship of bus branches, the phenomenon of loose wiring or wrong wiring is easy to occur in the wiring construction process of workers, and the normal operation of the system is influenced.
This requires that the line be checked for integrity before the detector is installed and commissioned. This detection process requires the controller to be fully loaded with the gas detector in order to fully test certain functions of the controller. If the controller is used for connecting a real gas detector for testing, the wiring is complicated, the testing difficulty is high, and the risk of damaging the expensive gas detector exists.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention aims to provide a portable detector simulation device, which comprises a computing device and a touch screen, wherein the computing device is connected with the touch screen through an RS485 bus, and the computing device is connected with a controller through a CAN bus; the computing device and the touch screen can complete the simulation generation and transmission of the gas concentration parameter and the state parameter of the gas detector originally belonging to the combustible gas alarm system; the simulation device can modify the number of simulated detectors through the touch screen. Through the measures, the technical purpose of detecting whether the circuit and the controller work normally or not before the detector is installed and put into operation is achieved.
To this end, a portable detector simulator for simulating the number, concentration and operating status of detectors in a combustible gas alarm system includes a computing device, and a touch screen and a warning light connected thereto, wherein:
the touch screen is used for inputting, editing, displaying and inquiring the gas concentration, the alarm state and other parameters of the simulated gas detector, is in communication connection with the computing device and interacts the data of the gas detector;
the calculating device is connected with the controller of the combustible gas alarm system through communication and is used for calculating and judging the simulation generation and transmission of the input gas concentration parameter and the state parameter of the gas detector of the combustible gas alarm system;
and the warning lamp is used for realizing the gas concentration parameter overrun warning of the detector.
Preferably, the touch screen is also used to increase and/or decrease the number of analogue detectors and to display the parameters and status of the detectors.
Preferably, the computing device is further connected with a key for calling data query and simulated gas concentration and state of the computing device;
the computing device is also connected with a warning lamp and used for prompting the connection state and the working state of the RS bus and the CAN bus of the simulation device.
Preferably, the computing device and the controller and the touch screen are connected through one or more communication buses selected from a CAN bus, an RS bus and an ethernet bus.
Preferably, the calculating device in the simulating device is further connected with a relay, and is used for testing linkage equipment such as a control electromagnetic valve or a fan and the like under the condition that the concentration of the simulated gas exceeds the alarm threshold state.
Preferably, the touch screen is further used for querying historical data of the simulation device, and the queried information includes the simulated gas concentration, the concentration state, the alarm threshold and the calibration voltage value of the detector.
Preferably, the simulation device responds to a status query command from a communication connection bus of the controller, and the content of the status query command comprises the ID of the controller;
the simulation device receives reply information after the state query instruction, wherein the reply information comprises a controller ID, a detector ID, a Modbus ID, a node type and gas type information;
the simulation device also responds to a real-time gas concentration query instruction from a controller communication bus, the content of the real-time gas concentration query instruction comprises a controller ID and a detector ID, reply information after the simulation device receives the real-time gas concentration query instruction comprises the controller ID, the detector ID, a gas concentration value and a concentration state, and an alarm is given immediately when the gas concentration value exceeds a threshold value.
Preferably, the simulation device further has a processing capability for invalid detector IDs, and when the detector IDs included in the status query command and the real-time gas concentration query command received by the simulation device from the controller do not belong to the memory range of the detector of the current simulation device, the simulation device does not reply in a targeted manner, so that the controller feeds back that the detector is overtime and offline.
Based on the simulation method of the portable detector simulation device, the simulation generation and transmission method of the detector simulation device for the gas concentration parameter and the state parameter of the gas detector comprises the following steps:
s1, assigning values to alarm fields in the computing device by a user through a touch screen, wherein the specifically assigned fields are adjusted according to the simulated gas detector, and the specifically assigned contents include but are not limited to gas components, gas concentration, working state and alarm state;
s2, judging whether the S value is in the valid data field of the simulated detector by the computing device:
if the S1 assignment corresponds to a non-existent gas detector instance, or corresponds to an illegal field, then the user is prompted for an error, i.e., S5 is performed;
if the valid data field belongs to a valid gas detector instance, then step S3 is performed;
s3, the computing device sends analog alarm data to the controller, wherein the sent analog alarm data comprises but is not limited to simulated gas detector site information, gas composition, gas concentration, working state and alarm state; wherein: the station information of the gas detector comprises the code, the channel number and the installation position of the gas detector;
s4, after the controller receives the analog data, sound and light alarm is sent out and alarm information is recorded, and testers verify whether the circuit, the controller and the fire-fighting equipment work normally or not by checking the alarm condition and the playback alarm information of the controller, so that the risks of complex wiring, high testing difficulty and easy damage of expensive gas detectors are avoided.
The alarm state of each gas detector also comprises a low limit alarm value and a high limit alarm value of the gas concentration, so that other detectors can be better understood and judged.
Compared with the prior art, the portable detector simulation device has the beneficial effects that:
firstly, the simulation device comprises a calculation device and a touch screen, and the calculation device and the touch screen can complete generation and transmission of gas concentration parameters and state parameters of a gas detector originally belonging to a combustible gas alarm system; therefore, under the condition that the gas detector of the combustible gas alarm system is not actually connected, whether the circuit and the controller work normally or not can be diagnosed by using the simulation device, and the risks of complicated wiring, high testing difficulty and high possibility of damaging the expensive gas detector are avoided;
secondly, the simulation device can modify the number of simulated detectors through the touch screen, so as to simulate the implementation process of the combustible gas alarm system on a complex line on a software level;
thirdly, the simulation device is provided with various interfaces of a CAN bus, an RS485 bus and an Ethernet bus between the technical device and the controller, so that the simulation device CAN comprehensively cover the simulation of the mainstream wired gas detector in the market;
and fourthly, the computing device is connected with a relay and is used for controlling linkage equipment such as the electromagnetic valve or the fan, and therefore under the condition that the gas detector is not actually connected, the linkage condition of programs such as the electromagnetic valve or the fan related to gas alarm can be verified by using the simulation device.
Drawings
FIG. 1 is an internal block diagram of a portable detector simulator;
FIG. 2 is a flow chart of the operation of a portable detector simulator;
FIG. 3 is an interface diagram of one embodiment of adding and removing gas concentration parameters within a touch screen of a detector simulator;
FIG. 4 is a diagram of a detailed input parameter embodiment of an analog detector viewed within a touch screen of the detector simulator.
Detailed Description
For the purpose of enhancing the understanding of the present invention, the present invention will be further explained with reference to the accompanying drawings and examples, which are only for the purpose of explaining the present invention and do not limit the scope of the present invention.
The traditional combustible gas alarm system comprises a controller and a gas detector which are connected through an RS485 bus, a CAN bus and an Ethernet. The controller is typically located in a monitoring room, while the gas detectors are distributed over a number of different locations where gas leaks need to be monitored. The invention aims to diagnose whether a line and a controller work normally or not without actually connecting an expensive gas detector, and avoid the risks of complicated wiring, high testing difficulty and easy damage to the expensive gas detector.
The internal structure of the portable detector simulation device is shown in fig. 1, and the portable detector simulation device comprises a computing device 102 and a touch screen 101, wherein the computing device 102 is connected with the touch screen 101 through an RS485 bus, and the computing device is connected with a controller 200 through a CAN bus.
A typical preferred configuration of the touch screen 101 is DMT80480C070_02WT, which is different from a traditional LCD screen driving mode, and developers only need to select required controls through software to complete page setting, and independent address variables are assigned to the controls; and reading and writing the address variables through an RS485 interface, so that the interaction of data can be completed. And these data may represent gas concentration, simulated detector operating conditions, etc.
Under the coordination of software and wiring logic of the computing device and the touch screen, the simulation generation and transmission of the gas concentration parameter and the state parameter of the gas detector can be completed. The process is as described in fig. 2, and is divided into the following 4 steps: the simulation method of the portable detector simulation device comprises the following steps:
s1, assigning values to alarm fields in the computing device by a user through a touch screen, wherein the specifically assigned fields are adjusted according to the simulated gas detector, and the specifically assigned contents include but are not limited to gas components, gas concentration, working state and alarm state;
s2, the computing device judges whether the S1 assignment is in the valid data field of the simulated detector:
if the S1 assignment corresponds to a non-existent gas detector instance, or to an illegal field, prompting the user for an error;
if the valid data field belongs to a valid gas detector instance, then step S3 is performed;
s3, the computing device sends analog alarm data to the controller, wherein the sent analog alarm data comprises but is not limited to simulated gas detector site information, gas composition, gas concentration, working state and alarm state; wherein: the station information of the gas detector comprises the code, the channel number and the installation position of the gas detector;
s4, after the controller receives the analog data, sound and light alarm is sent out and alarm information is recorded, and testers verify whether the work of the circuit, the controller and the fire-fighting equipment is normal or not by checking the alarm condition and the playback alarm information of the controller, so that the risks of complex wiring, high testing difficulty and easy damage of expensive gas detectors are avoided.
The more preferred simulation method further includes a lower alarm value and an upper alarm value of the gas concentration for the alarm state of each gas detector.
In the case that the relay exists in the computing device of the simulation device, step S4 will further trigger the relay to be linked to more fire-fighting facilities such as fire-fighting water valve, fire alarm and fire door. This process helps to verify the programmed linkage conditions of gas alarm associated fire suppression and protection valves, fire alarms, fire doors, etc. without actually connecting the gas detector.
FIG. 3 is an interface diagram of one embodiment of adding and removing gas concentration parameters within a touch screen of a detector simulator, including the ID, real-time concentration, real-time status, and details of the detector.
Fig. 4 is a diagram of an example of detailed input parameters of an analog detector viewed in a touch screen of a detector simulation apparatus, which is based on analog detector software of an STM32 microcontroller, and when a corresponding ID is clicked, a detail frame is automatically skipped to a corresponding detail interface, and a lower alarm value, an upper alarm value, a region number, a 0% LEL calibration voltage value, a 25% LEL calibration voltage value, a 50% LEL calibration voltage value, a 75% LEL calibration voltage value, a 100% LEL calibration voltage value, and several items of information of the production year, month, and day of the detector are displayed. Therefore, the controller of each detector can conveniently inquire and record the specific information detected by the analog detector, and the usability of the analog detector is improved. The computing device 102 is also connected with a key 103 and an indicator light 104; the key is used for calling data query, parameter setting and alarm parameter simulation functions of the computing device and can be used as a quick auxiliary means for touch screen operation; the indicator light is used for prompting the connection state and the working state of the RS485 bus, the CAN bus and the Ethernet bus of the simulation device, and the working state CAN comprise whether to alarm or not, whether to carry out fire-fighting linkage or not and the like.
The simulation device 100 can modify the number of simulated detectors through the touch screen 101, so that the simulation device has universal adaptability to large-scale or small-scale and complex-circuit combustible gas alarm systems.
The computing device 102 and the controller 200 have one or more of a CAN bus, an RS485 bus, and an Ethernet bus connected therebetween, thereby making the analog device universally adaptable to combustible gas alarm systems using a variety of bus connections.
The computing device 102 is connected with the relay 105 and used for controlling the fire-fighting water valve and the alarm, so that the simulation device can verify the linkage conditions of programs such as the fire-fighting water valve, the fire alarm, the fire door and the like associated with the gas alarm in detail under the condition that the gas detector is not actually connected.
In summary, the portable detector simulation apparatus and the simulation method of the present invention are a tool having a human-computer interaction interface, and implementing simulation of the number, connection state, and concentration state values of the detectors through the data processing module of the internal meter. The user can change the quantity, concentration and state of the analog detectors by means of the man-machine interaction interface according to different test requirements, and meanwhile, the data processing module processes and stores data transmitted from the man-machine interaction interface so as to meet the monitoring requirements of the controller on the analog detectors. Through the measures, the technical purpose of detecting whether the circuit and the controller work normally or not before the detector is installed and put into operation is achieved.
The embodiments of the present invention are disclosed as the preferred embodiments, but not limited thereto, and those skilled in the art can easily understand the spirit of the present invention and make various extensions and changes without departing from the spirit of the present invention.
Claims (10)
1. A portable detector simulator device (100) for simulating the number, concentration and operating status of detectors in a flammable gas alarm system, comprising a computing device (102), and a touch screen (101) and a warning light (104) connected thereto, wherein:
the touch screen (101) is used for inputting, editing, displaying and inquiring the gas concentration, the alarm state and other parameters of the gas detector simulated by the touch screen, and is in communication connection with the computing device (102) to interact the data of the gas detector;
the calculating device (102) is connected with the controller (200) of the combustible gas alarm system through communication and is used for calculating and judging simulation generation and transmission of input gas concentration parameters and state parameters of a gas detector of the combustible gas alarm system;
and the warning lamp (104) is used for realizing the gas concentration parameter overrun warning of the detector.
2. The detector simulation apparatus according to claim 1, wherein the touch screen (101) is further configured to increase and/or decrease the number of simulated detectors and to display parameters and status of the detectors.
3. The detector simulator of claim 1, wherein the computing device is further connected to a key for retrieving data from the computing device for querying and simulating the gas concentration and status;
the computing device is further connected with a warning lamp and used for prompting the connection state and the working state of the RS485 bus and the CAN bus of the simulation device.
4. The detector simulator of any of claims 1-3, wherein the computing device is connected to the controller and the computing device is connected to the touch screen via one or more of a CAN bus, an RS485 bus, and an Ethernet bus.
5. The detector simulator of claim 4, wherein the computing device in the simulator is further connected to a relay for testing a control solenoid valve or a fan or other linkage device when the simulated gas concentration exceeds the alarm threshold state.
6. The detector simulator of claim 4, wherein the touch screen is further configured to query historical data of the simulator, and the queried information includes simulated gas concentration, concentration status, alarm threshold, and calibration voltage value of the detector.
7. The detector simulator of claim 4, wherein the simulator is responsive to a status query command from the communication connection bus of the controller, the status query command including an ID of the controller;
the simulation device receives reply information after the state query instruction, wherein the reply information comprises a controller ID, a detector ID, a Modbus ID, a node type and gas type information;
the simulation device also responds to a real-time gas concentration query instruction from a controller communication bus, the content of the real-time gas concentration query instruction comprises a controller ID and a detector ID, reply information after the simulation device receives the real-time gas concentration query instruction comprises the controller ID, the detector ID, a gas concentration value and a concentration state, and an alarm is given immediately when the gas concentration value exceeds a threshold value.
8. The detector simulator of claim 7, further comprising processing capability for invalid detector IDs, wherein the simulator does not reply when the detector IDs included in the status query and the real-time gas concentration query received by the simulator from the controller do not fall within the memory range of the current simulator detector.
9. The simulation method of the portable detector simulation apparatus according to any one of claims 1 to 8, wherein: the simulation generation and transmission method of the detector simulation device for the gas concentration parameter and the state parameter of the gas detector is as follows:
s1, assigning values to alarm fields in the computing device by a user through a touch screen, wherein the specifically assigned fields are adjusted according to the simulated gas detector, and the specifically assigned contents include but are not limited to gas components, gas concentration, working state and alarm state;
s2, the computing device judges whether the S1 assignment is in the valid data field of the simulated detector:
if the S1 assignment corresponds to a non-existent gas detector instance, or to an illegal field, prompting the user for an error;
if the valid data field belongs to a valid gas detector instance, then step S3 is performed;
s3, the computing device sends analog alarm data to the controller, wherein the sent analog alarm data comprises but is not limited to simulated gas detector site information, gas composition, gas concentration, working state and alarm state; wherein: the station information of the gas detector comprises the code, the channel number and the installation position of the gas detector;
and S4, after receiving the analog data, the controller sends out sound and light alarm and records alarm information, and testers verify whether the circuit, the controller and the fire-fighting equipment work normally or not by checking the alarm condition and the playback alarm information of the controller.
10. The simulation method of claim 9, wherein the alarm state of each gas detector further comprises a lower alarm value and an upper alarm value of the gas concentration.
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| CN202011082305.3A CN112269008A (en) | 2020-10-12 | 2020-10-12 | Portable detector simulation device and simulation method |
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| CN202011082305.3A CN112269008A (en) | 2020-10-12 | 2020-10-12 | Portable detector simulation device and simulation method |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113030390A (en) * | 2021-03-16 | 2021-06-25 | 中国电子系统工程第二建设有限公司 | Portable gas detection device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113030390A (en) * | 2021-03-16 | 2021-06-25 | 中国电子系统工程第二建设有限公司 | Portable gas detection device |
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