CN104238550B - A kind of gas heater control panel intelligent detecting instrument - Google Patents
A kind of gas heater control panel intelligent detecting instrument Download PDFInfo
- Publication number
- CN104238550B CN104238550B CN201410542428.9A CN201410542428A CN104238550B CN 104238550 B CN104238550 B CN 104238550B CN 201410542428 A CN201410542428 A CN 201410542428A CN 104238550 B CN104238550 B CN 104238550B
- Authority
- CN
- China
- Prior art keywords
- module
- arm
- detection module
- chips
- fpga chip
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Arrangements For Transmission Of Measured Signals (AREA)
- Measuring Fluid Pressure (AREA)
Abstract
The present invention relates to a kind of gas heater control panel intelligent detecting instrument, efficiency is low when which solving the control board of existing manually detection gas water heater, the high technical problem of testing cost, it includes PC, ARM chips and fpga chip, ARM chips are provided with fpga chip interface module, analog switch module, serial communication modular and liquid crystal signal acquisition module, fpga chip is provided with ARM chip interface modules, dutycycle detection module, sparking frequency detection module, simulated wind pressure sensor assembly and simulated flow sensor assembly, dutycycle detection module, sparking frequency detection module, simulated wind pressure sensor assembly and simulated flow sensor assembly are connected with ARM chip interface modules respectively, ARM chip interface modules and the connection of fpga chip interface module, PC is connected with serial communication modular, it can be widely applied to the on-line checking of gas water heater control panel.
Description
Technical field
The present invention relates to a kind of detection means, specifically a kind of gas heater control panel intelligent detecting instrument.
Background technology
Gas water heater is widely used in daily life, and usage amount is more and more, due to combustion type hot water
Device requires higher relative to other water heater safety's property, therefore accurately tests out the working condition ten of water heater control circuit's plate
Divide important.Because the control board is higher compared to the circuit board complexity of other electric water heaters, the key that need to be detected
Point is more.But the test point that current detection means is also relied primarily on manually to control panel is measured one by one, detection
Workload it is very big, operating efficiency is very low, and testing cost is very high.
The content of the invention
Efficiency is low, examine when the present invention is exactly the control board in order to solve existing manually detection gas water heater
Surveying the high technical problem of cost, there is provided the gas heater control panel intelligent detecting instrument that a kind of detection efficiency is high, testing cost is low.
The technical scheme is that there is provided a kind of gas heater control panel intelligent detecting instrument, including PC, ARM cores
Piece and fpga chip, ARM chips are provided with fpga chip interface module, analog switch module, serial communication modular and liquid crystal signal
Acquisition module, fpga chip is provided with ARM chip interface modules, dutycycle detection module, sparking frequency detection module, simulated wind pressure
Sensor assembly and simulated flow sensor assembly, dutycycle detection module, sparking frequency detection module, simulated wind pressure sensor
Module and simulated flow sensor assembly are connected with ARM chip interface modules respectively, and ARM chip interface modules and fpga chip connect
Mouth mold block is connected, and PC is connected with serial communication modular；
The quantity of dutycycle detection module is 12, and the quantity of sparking frequency detection module is 4, simulated wind pressure sensor
The quantity of module is 4, and the quantity of simulated flow sensor assembly is 4, and analog switch module is 12 path analoging switch modules.
Preferably, 12 path analoging switch modules are made up of M74HC4316M1R chips.
Preferably, serial communication modular is UART interface, and the signal level of fpga chip output is 3.3V level, 3.3V electricity
Mean longitude crosses conversion chip SN74HCT244DW and changes into output after 5.0V level.
The beneficial effects of the invention are as follows, realize and the intelligent online of gas water heater control panel is detected, and can be simultaneously
Two pieces of gas water heater control panels are detected, detection speed is instantaneous, and detection efficiency is greatly improved, and saves manpower, drop
Low operating cost.
Further aspect of the present invention and aspect, by the description below with reference to the embodiment of accompanying drawing, are able to
It is clearly stated that.
Brief description of the drawings
Fig. 1 is the theory diagram of the present invention；
Fig. 2 is the circuit theory diagrams of 12 analog switch modules；
Fig. 3 is dutycycle detection signal input circuit figure；
Fig. 4 is the circuit theory diagrams of dutycycle detection module；
Fig. 5 is the schematic diagram of circuit shown in Fig. 4；
Fig. 6 is the circuit theory diagrams of simulated wind pressure and current part；
Fig. 7 is the schematic diagram of simulated wind pressure sensor assembly and simulated flow sensor assembly；
Fig. 8 is working power voltage circuit diagram.
Symbol description in figure：
1.PC machines；2.ARM chips；3.FPGA chips；4.ARM chip interface modules；5.FPGA chip interface modules；6.12
Path analoging switch module；7. serial communication modular；8. the 1st liquid crystal signal acquisition module；9. the 2nd liquid crystal signal acquisition module；
U1.LM2576S-5.0 chips；U3.REG1117-3.3 chips；U4.REG1117-2.5 chips；U7.LM3674MF-1.2 chips；
U10.PESD5V0l4UG chips；U11.PESD5V0l4UG chips；U12.M74HC4316M1R chips；U15.M74HC4316M1R
Chip；U18.M74HC4316M1R chips；U21.M74HC4316M1R chips；RP8. the 8th exclusion；RP9. the 9th exclusion；RP10.
10th exclusion；RP11. the 11st exclusion.
Embodiment
Referring to the drawings, the present invention is described in further detail with specific embodiment, with two pieces of combustion type heat to be measured
Exemplified by hydrophone control panel.
As shown in figure 1, the present invention includes PC 1, ARM chips 2 and fpga chip 3, ARM chips 2 connect provided with fpga chip
Mouth mold block 5,12 path analoging switch modules 6, serial communication modular 7, the 1st liquid crystal signal acquisition module 8 and the 2nd liquid crystal signal acquisition
Module 9.
Fpga chip 3 provided with ARM chip interface modules 4,12 dutycycle detection modules, 4 sparking frequency detection modules,
4 simulated wind pressure sensor assemblies and 4 simulated flow sensor assemblies, wherein, 12 dutycycle detection modules are the 1st respectively
Dutycycle detection module, the 2nd dutycycle detection module, the 3rd dutycycle detection module, the 4th dutycycle detection module, the 5th duty
Than detection module, the 6th dutycycle detection module, the 7th dutycycle detection module, the 8th dutycycle detection module, the inspection of the 9th dutycycle
Survey module, the 10th dutycycle detection module, the 11st dutycycle detection module, the 12nd dutycycle detection module, 4 sparking frequency inspections
Survey module be respectively the 1st sparking frequency detection module, the 2nd sparking frequency detection module, the 3rd sparking frequency detection module, the 4th dozen
Fiery frequency detection module, 4 simulated wind pressure sensor assemblies are the 1st simulated wind pressure sensor assembly, the 2nd simulated wind pressure biography respectively
Sensor module, the 3rd simulated wind pressure sensor assembly, the 4th simulated wind pressure sensor assembly, 4 simulated flow sensor assemblies point
It is not the 1st simulated flow sensor assembly, the 2nd simulated flow sensor assembly, the 3rd simulated flow sensor assembly, the 4th simulation
Water flow sensing unit module.
12 dutycycle detection modules, 4 sparking frequency detection modules, 4 simulated wind pressure sensor assemblies and 4 simulations
Water flow sensing unit module is connected with ARM chip interface modules 4 respectively, ARM chip interface modules 4 and fpga chip interface module 5
Connection, PC 1 is connected with serial communication modular 7.
PC 1 sends control instruction to ARM chips 2, and ARM chips 2 drive fpga chip by 12 path analoging switch modules 6
3 12 dutycycle detection modules export 12 path switching signals to two pieces of tested gas water heater control panels, to simulate use
(the corresponding function of these button operations is the start to gas water heater to button operation of the family to gas water heater control panel
Operation, power-off operation, set water temperature operation etc.).12 dutycycle detection modules detect two pieces of tested gas water heater controls
The 6 road pwm signals (frequency about 60kHz) of making sheet feedback, the dutycycle of 6 road pwm signals (frequency about 100Hz), and by the signal
PC 1 is uploaded by serial communication modular 7.
PC 1 sends control instruction to ARM chips 2,4 sparking frequency detecting moulds of the driving fpga chip 3 of ARM chips 2
Block exports high-voltage signal, and 4 tunnels that 4 sparking frequency detection modules detect two pieces of tested gas water heater control panel outputs are beaten
The frequency (about 20Hz) of fiery high-voltage signal, and the signal is uploaded into PC 1 by serial communication modular 7.
PC 1 sends control instruction to ARM chips 2, and ARM chips 2 drive 4 simulated wind pressure sensors of fpga chip 3
Module exports 4 road pulse signals (frequency is 50Hz or so) to two pieces of tested gas water heater control panels, to simulated wind pressure
Sensor signal.
PC 1 sends control instruction to ARM chips 2, and ARM chips 2 drive 4 simulated flow sensors of fpga chip 3
Module exports 4 road pulse signals (frequency is 50Hz or so) to two pieces of tested gas water heater control panels, to simulated flow
Sensor signal.
1st liquid crystal signal acquisition module 8, the 2nd liquid crystal signal acquisition module 9 are used to gather two pieces of tested gas water heaters
The liquid crystal display signal of control panel, and upload PC 1.
Serial communication modular 7 can be UART interface.
PC 1 is provided with display screen and control button, for interacting, descending into instruction with people by the parameter of setting
ARM chips 2, the various detection data for reading the upload of ARM chips 2, the data progress analysis uploaded to ARM chips 2 judge two pieces
, if two pieces of gas water heater control panels are abnormal normally whether gas water heater control panel alarmed, according to ARM cores
The display effect for the liquid crystal that the digital simulation that piece 2 is uploaded goes out on two pieces of gas water heater control panels.
The data of the liquid crystal signal wire of control panel are captured by ARM chips 2, PC 1 is then sent to and carries out data parsing,
Understand the accurate display effect of liquid crystal.By constructing a liquid crystal diagram on the interface of the software in PC 1, whenever
Capture after new liquid-crystal data, update the liquid crystal diagram on software interface, to reproduce the display effect that liquid crystal is newest, test
Whether personnel are consistent with real liquid crystal display effect by the liquid crystal diagram at comparison software interface, and then can determine that liquid crystal work
Whether normal make.
As shown in Fig. 2 12 path analoging switch modules 6 can use M74HC4316M1R chips to realize, M74HC4316M1R
Chip U12, M74HC4316M1R chip U15, M74HC4316M1R chip U18, M74HC4316M1R chip U21 the 5th pin,
6th pin, the output pin of the 14th pin and the 15th pin respectively with ARM chips 2 are connected.As M74HC4316M1R chips U12
The 15th pin when being driven by the high level of ARM chips 2, then led between M74HC4316M1R chips U12 the 1st pin and the 2nd pin
It is logical, it is equivalent to be pressed by the user connection into button；Otherwise, it is high between M74HC4316M1R chips U12 the 1st pin and the 2nd pin
Resistance, it is equivalent to be released by a user disconnection into button.Other M74HC4316M1R chip operation processes are identical, repeat no more.
Dutycycle detection signal input circuit as shown in Figure 3, dutycycle detection signal is 5V, by the 8th exclusion RP8, the 9th
Magnitude of voltage after the bleeder circuit partial pressure that exclusion RP9, the 10th exclusion RP10, the 11st exclusion RP11 are constituted, partial pressure is 5 × 10k ÷
(10k+5.1k), equal to the safe input voltage that 3.31V is fpga chip 3, the signal after partial pressure draws with the input of fpga chip 3 again
Pin is connected.PESD5V0l4UG chip U10, PESD5V0l4UG chips U11 has Surge suppression function, can prevent industrial occasions
In the interference of strong electromagnetic.
As shown in Figure 4 and Figure 5, dutycycle detection module is detected to 100Hz or so pwm signal, and this module can be same
When detect the frequency and dutycycle of pwm signal.Wherein：N_reset signals are module resets signal, for by module resets；
Pwm_in signals are the pwm signal that need to be detected；Clk_20k is the work clock of this module；This module of valide signal designations is
It is no to complete detection；Pwm [7..0] is 8 data, for output duty cycle testing result；Cycle_50us [7..0] is 8 digits
According to for output frequency testing result.Fig. 5 is dutycycle and frequency detecting schematic diagram, once the rising edge of pwm signal is effectively,
Pwm signal is sampled by 20k work clock immediately, until next rising edge effectively stops sampling immediately, it is assumed that
In the data of sampling, high level is m, and low level is n, then dutycycle=m ÷ n, frequency=20k ÷ (m+n).
As shown in fig. 6, because the signal level that fpga chip 3 is exported is 3.3V level, by electrical level transferring chip
SN74HCT244DW is changed into after 5.0V level and exported.
The knot of simulated wind pressure sensor assembly and simulated flow sensor assembly inside fpga chip 3 as shown in Figure 7
Composition, wherein n_reset are the reset signal of this module；Clk_50k is the operating clock signals of this module；frequence
It 8 is data that [7..0], which is, is the output frequency control signal of this module；Pulse_out is the pulse output signals of this module.Work
It is by the way that the corresponding 50kHz of clk_50k signals work clock is carried out into frequency dividing realization as principle.For example to export 50Hz's
Pulse signal, then the corresponding decimal number of frequence [7..0] data is 50, then divider ratio=50k ÷ 50=1000, that is, divide
Frequency is 1000.This module by the divide ratio of the frequency divider of inside modules by being set to 1000 pulses that 50Hz can be achieved
Output.
As shown in figure 8, required operating voltage circuit by LM2576S-5.0 chip U1, REG1117-3.3 chips U3,
REG1117-2.5 chip U4 and LM3674MF-1.2 chips U7 is constituted, and external input power connects with LM2576S-5.0 chips U1
Connect, 5V voltages are converted into through LM2576S-5.0 chips U1, LM2576S-5.0 chips U1 outputs are connected respectively, REG1117-3.3
Chip U3, REG1117-2.5 chip U4 and LM3674MF-1.2 chip U7, wherein REG1117-3.3 chips U3 output 3.3V electricity
Pressure, REG1117-2.5 chips U4 output 2.5V voltages, LM3674MF-1.2 chips U7 output 1.2V voltages.
It is described above to be not intended to limit the invention only to the preferred embodiments of the present invention, for the skill of this area
For art personnel, the present invention can have various modifications and variations.Every claim in the present invention is done in the range of limiting
Any modification, equivalent substitution and improvements etc., all should be within protection scope of the present invention.
Claims (3)
1. a kind of gas heater control panel intelligent detecting instrument, it is characterized in that, including PC, ARM chips and fpga chip, it is described
ARM chips are provided with fpga chip interface module, analog switch module, serial communication modular and liquid crystal signal acquisition module, described
Fpga chip is provided with ARM chip interface modules, dutycycle detection module, sparking frequency detection module, simulated wind pressure sensor die
Block and simulated flow sensor assembly, the dutycycle detection module, the sparking frequency detection module, the simulated wind pressure are passed
Sensor module and the simulated flow sensor assembly are connected with the ARM chip interface modules respectively, the ARM chip interfaces
Module and fpga chip interface module connection, the PC are connected with the serial communication modular；
The quantity of the dutycycle detection module is 12, and the quantity of the sparking frequency detection module is 4, the simulation wind
The quantity of pressure sensor module is 4, and the quantity of the simulated flow sensor assembly is 4, and the analog switch module is
12 path analoging switch modules.
2. gas heater control panel intelligent detecting instrument according to claim 1, it is characterised in that the 12 tunnel simulation is opened
Module is closed to be made up of M74HC4316M1R chips.
3. gas heater control panel intelligent detecting instrument according to claim 2, it is characterised in that the serial communication mould
Block is UART interface, and the signal level of the fpga chip output is 3.3V level, and the 3.3V level passes through conversion chip
SN74HCT244DW is changed into after 5.0V level and exported.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410542428.9A CN104238550B (en) | 2014-10-14 | 2014-10-14 | A kind of gas heater control panel intelligent detecting instrument |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410542428.9A CN104238550B (en) | 2014-10-14 | 2014-10-14 | A kind of gas heater control panel intelligent detecting instrument |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN104238550A CN104238550A (en) | 2014-12-24 |
| CN104238550B true CN104238550B (en) | 2017-08-25 |
Family
ID=52226843
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410542428.9A Expired - Fee Related CN104238550B (en) | 2014-10-14 | 2014-10-14 | A kind of gas heater control panel intelligent detecting instrument |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104238550B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106249734A (en) * | 2016-08-31 | 2016-12-21 | 浙江比华丽电子科技有限公司 | Intelligent controller of solar heater testing circuit |
| CN108073100B (en) * | 2016-11-15 | 2023-12-01 | 佛山市顺德区美的电热电器制造有限公司 | Automatic detection system and detection method for home appliance main control board |
| CN108073151A (en) * | 2016-11-15 | 2018-05-25 | 佛山市顺德区美的电热电器制造有限公司 | Household electrical appliances master control borad automatic checkout system and detection method |
| CN106970608B (en) * | 2017-04-01 | 2019-03-05 | 成都中科慧源科技有限公司 | A kind of gas fired water heater main controller automatic test fixture and test method |
Family Cites Families (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| TWM314848U (en) * | 2006-12-29 | 2007-07-01 | Grand Mate Co Ltd | Detection of gas water heater |
| CN201072381Y (en) * | 2007-07-13 | 2008-06-11 | 姚克农 | Synthetic performance test system of gas burning water heater |
| CN202141207U (en) * | 2011-07-14 | 2012-02-08 | 樱花卫厨（中国）股份有限公司 | Intelligent detector for gas water heater |
| CN202267736U (en) * | 2011-10-17 | 2012-06-06 | 天津七六四通信导航技术有限公司 | General type digital printed circuit board functional test circuit |
| CN202648973U (en) * | 2012-05-29 | 2013-01-02 | 东莞市海德试验仪器有限公司 | Combustion gas wall heater performance comprehensive testing device |
| CN203299287U (en) * | 2013-04-22 | 2013-11-20 | 海尔集团公司 | Water heater detection apparatus |
-
2014
- 2014-10-14 CN CN201410542428.9A patent/CN104238550B/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| CN104238550A (en) | 2014-12-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104238550B (en) | A kind of gas heater control panel intelligent detecting instrument | |
| CN103019940B (en) | A kind of electric energy meter embedded software half simulation testing device | |
| CN101706249B (en) | Remote monitoring device for mountain cracks | |
| CN202443104U (en) | Automatic detection platform for IC card water-meter circuit board | |
| CN203798913U (en) | Intelligent multichannel heater operating state and current monitoring system | |
| CN203811737U (en) | Direct-current electric-leakage monitoring and warning device | |
| CN203275483U (en) | Automatic amplitude modulation oscilloscope | |
| CN202453470U (en) | Checking instrument for SF6 gas density relay | |
| CN104360188A (en) | Testing device for telemetry system | |
| CN202522687U (en) | Detection device of frequency converter power supply board | |
| CN201488749U (en) | Novel meter detection equipment | |
| CN102707656B (en) | Intelligent controller for shot blasting machine | |
| CN205860889U (en) | A kind of portable fuse photoelectric properties tester | |
| CN204515527U (en) | For the Auto-Test System of elevator control cabinet | |
| CN202815473U (en) | Intelligent controller of shot blasting machine | |
| CN104330762B (en) | Line fault detection circuit for current transformer | |
| CN103984250B (en) | Multi-gear resistance output device and detecting system | |
| CN101615029A (en) | Intelligent controller test system | |
| CN202798160U (en) | Field detection system for power distribution terminal | |
| CN105353309A (en) | Automobile wiper motor performance detection apparatus and detection method | |
| CN107240426B (en) | A kind of device for the processing of nuclear power plant's reactor coolant pump revolving speed | |
| CN206021071U (en) | A kind of diesel engine side monitoring box test system | |
| CN205540696U (en) | Take display of self test function | |
| CN203950137U (en) | Many gears resistance output unit, detection system | |
| CN203422664U (en) | Undercarriage control and interface assembly testboard |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170825 Termination date: 20191014 |