CN2837907Y - Position state detection sensor of speed regulation switch - Google Patents
Position state detection sensor of speed regulation switch Download PDFInfo
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- CN2837907Y CN2837907Y CN 200520107373 CN200520107373U CN2837907Y CN 2837907 Y CN2837907 Y CN 2837907Y CN 200520107373 CN200520107373 CN 200520107373 CN 200520107373 U CN200520107373 U CN 200520107373U CN 2837907 Y CN2837907 Y CN 2837907Y
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Abstract
The utility model relates to a gear position state detection sensor of a speed regulation switch. A microcontroller is respectively connected with a level comparison unit, a driving chip, a pulse upload unit and a real-time clock through I/O interfaces, and a serial port of the microcontroller is connected with an up channel. Reset pins of a watchdog are connected with reset pins of the microcontroller. A WDI is connected with the I/O interfaces of the microcontroller. The driving chip is connected with a relay, and the level comparison unit is connected with a voltage collector. The utility model designs a new gear state detection mode to learn the on-site state of fan switches in time. After adopting the circuit, the utility model can support many signal feedback forms and protective measures are added on feedback circuits and communication buses. The utility model realizes a strong power damage prevention function, supports many kinds of bus communication and improves product application range.
Description
Technical field the utility model relates to a kind of detecting sensor, particularly a kind of sensor that is used for each range state detection of high, normal, basic many gears fan speed regulation switch.
Background technology tradition air conditioning charging sensor adopts calorimeter and heat distribution list usually, and calorimeter is installed on the feed pipe of system, and temperature sensor is contained in respectively on confession, the water return pipeline.The heat that the user is consumed in a period of time is the integration of the product of the flow of institute's heat supply water and the enthalpy difference that supplies backwater to the time, calorimeter utilizes this principle exactly, with flowmeter survey by the time flow and with temperature sensor measurement by the time supply and return water temperature, these data input integrating instrument integral and calculating just can be drawn the used heat of user.Heat distribution list is the instrument with heat of determining the user by the heat dissipation capacity of measuring user's heat dissipation equipment.This mode of directly temperature being gathered, not only cost high and also measure inaccurate, perhaps be exactly measure unreasonable.
The fan speed regulation switch prospect that has a very wide range of applications, can be easily by artificial control, select high, medium and low three kinds of speed, satisfy actual user demand, such as heat interchange end in central air conditioner system, people can pass through to select different gears, thereby control high, medium and low three kinds of rate of heat exchanges, adjust indoor temperature.Therefore in some field of intelligent control, need in time to understand the present range state of speed-regulating switch,, satisfy the Based Intelligent Control demand so that intelligence control system is carried out corresponding Based Intelligent Control measure.The speed-regulating switch gear position sensor can satisfy existing market overwhelming majority driving switch state-detection demand, for each intelligence control system provides on-the-spot speed-regulating switch instant gear.But according to literature search and market survey, the sensor that does not still have each range state of gratifying many gears fan speed regulation switch to detect at present.
Utility model content technical problem to be solved in the utility model is: 1, detect the speed-regulating switch range state.2, send current speed-regulating switch range state to master system.3, accept control command, carry out the disconnected control of scene control.
In order to address the above problem, the utility model has adopted following technical scheme.
A kind of speed-regulating switch range state detecting sensor comprises microcontroller, the level comparing unit, the voltage acquisition device, chip for driving, relay, pulse uploading unit, up channel, real-time clock and house dog, its special feature is: microcontroller by I O mouth respectively with level comparing unit, chip for driving, the pulse uploading unit, real-time clock links to each other; Micro controller series links to each other with up channel; The resetting pin of house dog links to each other with the resetting pin of microcontroller, WDI and microcontroller I the O mouth link to each other; Chip for driving links to each other with relay; The level comparing unit links to each other with the voltage acquisition device.
Gear signal enters system by voltage acquisition unit, tells each gear by level ratio than cellular zone, by microcontroller data is handled, and passes to the upper level system by pulse uploading unit or data feedback channel then.Microcontroller can send the state that control command is given the chip for driving pilot relay, thereby can user's use be limited.House dog shields to system, and real-time clock provides the current time for system.
The utility model has designed a kind of brand-new range state detecting pattern; in time understand the fan switch presence states; can support multiple signal to return pattern after adopting this circuit; increase safeguard measure on backfeed loop, the communication bus; realize the strong electricity destroying-proof function; support multiple bus communication, improve application range of products.
Description of drawings Fig. 1 is a sensor mainboard block diagram.
Fig. 2 is a communication module wiring block diagram, can make multiple mode communication module.
Fig. 3 is voltage acquisition unit and level comparing unit connection diagram.
Embodiment shown in Fig. 1-2, microcontroller of the present utility model by I O mouth respectively with the level comparing unit, chip for driving, the pulse uploading unit, real-time clock links to each other; Micro controller series links to each other with up channel; The resetting pin of house dog links to each other with the resetting pin of microcontroller, WDI and microcontroller I the O mouth link to each other; Chip for driving links to each other with relay; The level comparing unit links to each other with the voltage acquisition device, and is detailed in Fig. 3.
The utility model fan switch gear position sensor, mainly be during according to gear change, the change in voltage of high tap position is distinguished each gear, sensor internal uses LM339 four voltage comparators, just can obtain different status signals, by the processing of 89C2051MCU, just obtained field data accurately.Consider exist in the current intelligence control system pulse measurement and directly collection copy dual mode, native system has adopted two kinds of embodiments, a kind of is the burst transmissions formula, a kind of is communication mode (485, MODEM, communication modes such as M-BUS and C-MBUS are optional)
1, power module: after using the transformer step-down, by the rectifier bridge rectification again after the filtering through 7805 voltage stabilizing chips, just constituted the basic comprising of power module, add lotus root electric capacity and just be met the power supply that system needs.
2, voltage ratio and voltage acquisition unit: the voltage of gathering high tap position, convert stable level again to through step-down, the reference voltage that has just obtained the gear comparison through two component piezoresistances is compared with power supply VCC respectively, obtain two status signals, the various combination of these two states is just represented different gears, gets lower level in addition and compares with 1V and be used for judging whether for neutral gear.
3, Anti-Jamming Technique: communication port has adopted the current-limiting protection of protection of TVS transient overvoltage and thermistor; Suitable shake measure and the wrong retransmission mechanism of going also adopted in program inside; Adopt the IMP813L watchdog chip, it provides reset signal to be used for starting or restarting MPU/MCU, makes it enter or the loop program and the order that turn back to precognition carried out, in order to prevent the appearance of faults such as program fleet; Burst transmissions adopts the photoelectricity quarantine measures to prevent the interference of outer signals to system.
4, communication module: modular design, integrated a kind of communication mode commonly used (as 485 modes) on the mainboard, unified interface based on the serial communication mode is provided simultaneously, communication modes such as modulation bus, CAN bus, M-BUS bus, C-MBUS bus are made special address card, address card links to each other with mainboard interface, satisfy the demand of multiple communication modes, thereby make the utility model that more wide application space be arranged.
5, control module: this sensor is except acquisition function, also added control function in addition, adopt chip for driving BH8023 and relay BST-902 50A-9V-A (B) to control, can carry out the control of field apparatus break-make as required, this function adds chip for driving by other and relay is realized by Single-chip Controlling; In addition, when system was pulse mode, control circuit connect external lead wire, was controlled by nonshared control unit.
The utility model at first carries out just entering normal operating conditions after the making to single-chip microcomputer internal resource and related peripheral device after powering on.Gear signal obtains and the proportional low pressure of each gear by potential device, is transformed into direct current signal by rectifying and wave-filtering.This signal is through three electric resistance partial pressures, can obtain two voltage signals, divider resistance is respectively R1, R2, R3, two voltages are respectively U1, U2, U1＞U2, comparing by LM339 with system voltage VCC and reference voltage 1V respectively with these two voltage signals, is high-grade when U2＞VCC, is middle-grade when U1＞VCC and U2＜VCC; Being low-grade when 1V＜U1＜VCC, is neutral gear when U2＜1V.The dividing potential drop synoptic diagram as shown in Figure 3.
More than explanation is to be example explanation with three driving switch, can realize by increasing divider resistance and comparer when gear quantity increases.Sensor just detects the gear signal of fan coil like this, after normally collecting gear signal, signal is delivered MCU, carrying out a series of processing such as software goes to tremble, judges, conversion, form with pulse or data passes to the upper level system, when being in communication mode, can current gear be read, sensor can upwards transmit the situation that gear changes automatically when state changes, to guarantee its accuracy.During communication mode, can control relay by the MCU of communication bus by sensor.
Claims (1)
1, a kind of speed-regulating switch range state detecting sensor comprises microcontroller, the level comparing unit, the voltage acquisition device, chip for driving, relay, pulse uploading unit, up channel, real-time clock and house dog is characterized in that: microcontroller by I O mouth respectively with level comparing unit, chip for driving, the pulse uploading unit, real-time clock links to each other; Micro controller series links to each other with up channel; The resetting pin of house dog links to each other with the resetting pin of microcontroller, WDI and microcontroller I the O mouth link to each other; Chip for driving links to each other with relay; The level comparing unit links to each other with the voltage acquisition device.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520107373 CN2837907Y (en) | 2005-05-26 | 2005-05-26 | Position state detection sensor of speed regulation switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200520107373 CN2837907Y (en) | 2005-05-26 | 2005-05-26 | Position state detection sensor of speed regulation switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2837907Y true CN2837907Y (en) | 2006-11-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200520107373 Expired - Fee Related CN2837907Y (en) | 2005-05-26 | 2005-05-26 | Position state detection sensor of speed regulation switch |
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| Country | Link |
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| CN (1) | CN2837907Y (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406996A (en) * | 2018-11-29 | 2019-03-01 | 浙江长隆电气有限公司 | A kind of multifunctional testing circuit of direct current speed adjustment switch |
-
2005
- 2005-05-26 CN CN 200520107373 patent/CN2837907Y/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109406996A (en) * | 2018-11-29 | 2019-03-01 | 浙江长隆电气有限公司 | A kind of multifunctional testing circuit of direct current speed adjustment switch |
| CN109406996B (en) * | 2018-11-29 | 2024-01-09 | 浙江长隆电气有限公司 | Multifunctional test circuit of direct current speed regulation switch |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |