CN205318539U - Intelligence heat energy metering device based on singlechip - Google Patents
Intelligence heat energy metering device based on singlechip Download PDFInfo
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- CN205318539U CN205318539U CN201620052619.1U CN201620052619U CN205318539U CN 205318539 U CN205318539 U CN 205318539U CN 201620052619 U CN201620052619 U CN 201620052619U CN 205318539 U CN205318539 U CN 205318539U
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Abstract
(B, ) the utility model discloses a (B, ) (b) intelligence heat energy metering device based on singlechip includes flow measurement module, water inlet temperature measuring module, delivery port temperature measuring module and (b) (b) IC (b) (b) card management module be connected with singlechip main control unit, the motorised valve passes through the surplus heat information control switching of (b) (b) IC (b) (b) card that singlechip main control unit read by (b) (b) IC (b) (b) card management module, the motorised valve sets up at the water inlet, singlechip main control unit still connects (b) (b) LCD (b) (b) display module and alarm module, (B, ) (b) LCD (b) (b) display module is used for showing heat information and trouble information, alarm module is used for reporting to the police when the surplus heat information of (b) (b) IC (b) (b) card is less than the threshold value. (B, ) (b) collects multiple functions in the intelligent water gauges of the brand -new notion of an organic whole such as automatic heat supply, automatic measurement, automatic charge, automatic control, prepayment management and display alarm, and the consumption is ultralow, accurate (b) (the b) of measurement. (B, )
Description
Technical field
The utility model relates to a kind of heat energy metering device, specifically relates to a kind of power consumption ultralow, the SCM Based intelligence heat energy metering device of accurate measurement.
Background technology
Heat energy metering device is widely used in civilian and industrial field, and for energy-saving and emission-reduction and thermal metering management provide effective technique means, the heat energy carrier of general heat energy table is hot water.
Using IC-card pre-payment thermal energy meter can bring great convenience to vast water meter user and administrative authority, the use of IC-card technology can realize first paying dues and use afterwards, effectively solves difficult charge problem. Particularly when energy worsening shortages in recent years, this year is for the control for thermal energy consumption, governments at all levels and even the whole society exceed to pay attention to especially ordinaryly, the current time producing, install and apply heat supply calorimeter just in a large number, big for the demand of model calorimeter various types of, each is also unprecedented, simultaneously that the requirement of the performance of calorimeter, quality is also more and more higher.
Calorimeter most advanced in the world is " ultrasonic calorimeter " at present. 1987, after resulting from Germany without Magnetic Measurement Technology, just it is widely used in civilian field. Ultrasonic calorimeter uses " differential method " measuring flow. Relying on precision circuit, the accuracy of ultrasonic calorimeter is ensured. But the operation of ultrasonic calorimeter, maintenance cost are higher, only use in a small amount of occasion, universal difficulty height.
And current domestic calorimeter popular in a large number still has quite a lot of " having magnetic calorimeter ", what is called has magnetic calorimeter, is exactly in the collection of flow signal, and what select is have Magnetic Sensor, such as " Wei root ", " Huo Er ", " dry-reed tube " etc. On calorimeter basal meter and intellectual water meter, use has magnetic sampling device, due to the feature of magnetic sampling device, extra magnetic force can be produced and reduce the sensitivity of transmission parts (at base table middle finger impeller), also add some factors of instability and potential problem, bring a series of unnecessary trouble, as immunity from interference is low, low precision, easily blocking, after absorption irony, abrasion increases, reducing work-ing life, and magnet demagnetization phenomenon etc. occurs long-time immersion in the hot water, the utility model is therefore.
Practical novel content
In order to solve the problems of the technologies described above, the utility model object is: provide a kind of SCM Based intelligence heat energy metering device, integrate the intellectual water meter of the novel concept of the multiple function such as automatic heat supply, automatic gauge, automatically charge, automatically control, pre-payment management and display alarm, power consumption is ultralow, accurate measurement.
The technical solution of the utility model is:
A kind of SCM Based intelligence heat energy metering device, it is characterised in that, comprise the flow measurement module, water-in temperature-measuring module, water outlet temperature-measuring module and the IC-card management module that are connected with micro-chip principal controller; Motorized valve is managed the surplus heat information Control opening and closing of the IC-card that module reads by micro-chip principal controller by IC-card, described motorized valve is arranged on water-in, described micro-chip principal controller also connects LCD display module and alarm module, described LCD display module is for showing caloric information and failure message, and described alarm module is used for when the surplus heat information of IC-card is reported to the police lower than during threshold value.
Preferably, described alarm module comprises hummer and is arranged at the polychrome pilot lamp of measuring apparatus body surface.
Preferably, described display module comprises the LCD12232-9 display screen being connected and regulates the potentiometer of display comparison degree, and described LCD12232-9 display screen also connects micro-chip principal controller.
Preferably, described IC-card management module is M104X module.
Preferably, described micro-chip principal controller is MSP430FW427 micro-chip.
Preferably, described water-in temperature-measuring module and water outlet temperature-measuring module adopt PT1000 hot resistance measuring tempeature.
Preferably, described flow measurement module comprises impeller and gear, and dry-reed tube switch installed by described gear, the inductance being provided with in a resonance loop above described impeller, and the half of described impeller is covered with damping and amortization metallic substance.
Compared with prior art, the utility model has the advantages that:
1, this intelligence heat energy metering device integrates the intellectual water meter of the novel concept of the multiple function such as automatic heat supply, automatic gauge, automatically charge, automatically control, pre-payment management and display alarm, and power consumption is ultralow, and structure is simple, with low cost.
, flow measurement module impeller above be provided with in a resonance loop inductance, the half of impeller is covered with damping and amortization metallic substance so that flow metering is more accurate.
Accompanying drawing explanation
Below in conjunction with drawings and Examples, the utility model is further described:
Fig. 1 is the structure block diagram of the utility model SCM Based intelligence heat energy metering device;
Fig. 2 is the minimum system structure principle chart of the utility model micro-chip main control;
Fig. 3 resets the structure principle chart of circuit and clock circuit in embodiment;
Fig. 4 is the schematic circuit diagram of M104X read-write card in embodiment;
Fig. 5 is the schematic circuit diagram of pilot lamp in embodiment;
Fig. 6 is display module structure principle chart in embodiment;
Fig. 7 is the schematic circuit diagram of temperature detection in embodiment;
Fig. 8 is the structure principle chart of temperature survey principle in example;
Fig. 9 is the schematic circuit diagram that in embodiment, hummer drives;
Figure 10 is the schematic circuit diagram of the flow measurement module in example.
Embodiment
For making the purpose of this utility model, technical scheme and advantage clearly understand, below in conjunction with embodiment and with reference to accompanying drawing, the utility model is further described. It is to be understood that these describe just exemplary, and do not really want to limit scope of the present utility model. In addition, in the following description, eliminate the description to known features and technology, unnecessarily obscure concept of the present utility model to avoid.
Embodiment:
As shown in Figure 1, intelligence heat energy metering device comprises micro-chip principal controller, flow measurement module, water-in temperature-measuring module, water outlet temperature-measuring module and IC-card management module, wherein, flow measurement module, water-in temperature-measuring module, water outlet temperature-measuring module and IC-card management module all connect micro-chip control device.Motorized valve is managed the surplus heat information Control opening and closing of the IC-card that module reads by micro-chip principal controller by IC-card, motorized valve is arranged on water-in, micro-chip principal controller also connects LCD display module and alarm module, LCD display module is for showing caloric information and failure message, and alarm module is used for when the surplus heat information of IC-card is reported to the police lower than during threshold value. Flow measurement module is used for measuring flow velocity, and water-in and water outlet temperature-measuring module detect water temperature, and IC-card management module is used for paying and supplementing with money.
16 RISC super low-power consumption microcontroller MSP430FW42x for electronic grout flow meter that TI company produces selected by micro-chip principal controller. Following three kinds of series can be selected:
MSP430FW423:8KB+256BFlash storer, 512BRAM
MSP430FW425:16KB+256BFlash storer, 512BRAM
MSP430FW427:32KB+256BFlash storer, 1KBRAM
As shown in Figure 2, single-chip minimum system also comprises external crystal oscillator 32KHZ; Reset mode button resets; 3.3V voltage stabilized source.
As shown in Figure 4, adopt the M104A type read-write card module that Beijing Yuan Zhi Ke Xin company produces, this read-write card module adopts 13.56MHz non-contact radio-frequency technology, interior embedding low-power consumption RF base station MFRC522, it is only necessary to sends order by simple I2C interface and can realize the operation completely to card. The functional pin of this module is as follows:
WAKE/COLCK: be namely sleep wake-up pin, the card that has when being also normal operation indicates pin
VDC:3.3V direct supply
The SCL of SCL:I2C interface
The SDA of SDA:I2C interface
B1:RS485 direction is changed
GND: power supply ground
P2.2, P2.3, P2.4 of the P2 mouth of micro-chip respectively WAKE/CLOCK, SCL, SDA with M104A read-write card module be connected, its interface circuit is as shown in Figure 4.
Wherein P2.2 is for there being card to indicate, and when there being IC-card to enter in read-write card module range, this is denoted as lower level, for interrupting to micro-chip application. P2.3, P2.4 are the data corresponding interface of I2C.
As shown in Figure 3, I2C bus supports any chip production process. Adopting two-wire, namely serial data (SDA) and serial clock (SCL) are being connected between the device of bus transmission information. Each device has a unique address, and can as a transmitter or receptor (determining by the function of device). Except transmitter and receptor, it is main frame or from machine that device can also be counted as when performing transfer. Main frame is the transfer of initialization bus and produces the device allowing the clocksignal of transmission, and now any addressed device is all considered as from machine. I2C bus is that the device that can connect more than one control bus in other words is to bus with the bus of individual many main frames. SDA and SCL is two-way circuit, all it is connected to positive voltage of supply by a pull-up resistor, when bus free, these two circuits are all high level, and the device output stage being connected to bus must be the function that open-drain or open collector could perform line "AND".
Having different types of technique owing to being connected to the device of I2C bus, the level of logic " 0 " and " 1 " is not fixed, and it is determined by CCC associated level, often transmits a data bit and just produces a time clock. Data on SDA line must keep stable in the high level period of clock, the high or low level state of data line only the clocksignal on SCL line be that lower level could change.
In concrete enforcement, LCD display module is specifically made up of the potentiometer of LCD1602 display screen and adjustment display screen contrast, and LCD1602 display screen connects micro-chip principal controller, and concrete mode of connection and principle of work are as illustrated in Figures 5 and 6.
It it is part common in circuit. General use fills with electric current connection, and diode meets VCC through resistance. Excessive owing to not wishing the electric current flowing through micro-chip, this kind of method only uses when LED quantity is few. Assuming that micro-chip exports lower level is 0V, and photodiode conduction voltage drop is 0.7V, and the pressure drop at resistance two ends is: 3.3-0.7=2.6V. This branch current is 2.6V/1K=2.6mA, it is possible to make lumination of light emitting diode. If diode is darker, it is possible to suitably reduce current limliting resistance R9.
Native system adopts MSP430FW427 micro-chip, P3.5, P3.6, P3.7 of the P3 mouth of micro-chip respectively RS, R/W, E with 12232 dot matrix type liquid-crystal display modules be connected. The P4 mouth of micro-chip is connected with the data bus of 12232.
The program of liquid-crystal display section mainly comprises the simulation of control pin level. Several parts such as transmitting-receiving order, liquid crystal initialize, display data.
As shown in Figure 7, the measurement of temperature adopts PT1000 measurement of resistance. This resistance substantially linearly changes with temperature, by measuring computing the resistor value outlet and the entrance water temperature of this resistance.
As shown in Figure 8, first by Rref, electric capacity C1 is charged, then respectively by Rref and Rmeas to capacitor discharge, record the time of capacitance voltage from Vcc to 0.25Vcc respectively, thus know the proportionlity of Rref and Rmeas.
Due to:
Wherein: Nref and Nmeas is respectively by the discharge time of Rref and Rmeas:
Vref=0.25Vcc;
If Rref is known, then can calculate Rmeas.
As shown in Figure 9, after micro-chip powers on, micro-chip pin is high level. In figure, P3.0 controls hummer, and choosing Q1 is PNP type triode, and when P3.0 is high level, hummer does not work; The only hummer work when P3.0 is lower level. Without the need to initialize after selecting PNP to power on relative to NPN type connection, sound unnecessary when its objective is to reduce start.
The present invention adopts a kind of new flow measurement module, the inductance in a resonance loop is placed in the top of impeller, and the half of impeller is covered with other metallic substance having damping and amortization such as copper badge, so that it may to be checked through the rotation of impeller. The position of inductance above impeller determines the ratio of damping in resonance loop, and when inductance is positioned at a district, the ratio of damping in loop is greater than the ratio of damping in b district. By measuring the different damping coefficient in resonance loop, it is possible to realize the measurement to wheel rotation. Result is calculated more accurate. Schematic circuit is as shown in Figure 10.
The measurement of flow is that the number of turns rotated by measuring water meter completes. When know water meter often turn around the volume of institute's flowing water time, so that it may to calculate the flow of water meter; Equally, after measuring the number of turns that in the unit time, water meter is turned, so that it may to calculate the flow velocity of water meter. The pass of flow and flow velocity is:
Q=V*SQ: flow, V: be flow velocity, S: pipeline section amasss.
Its principle of work is:
When user uses, to take hot water as the heat energy of carrier be, by the hot water flow in water meter thus obtains the volume of hot water by the flow measurement module in base table, and the temperature sensor being positioned at feed-water end and water side gathers inflow temperature and leaving water temperature(LWT) in real time. Use the parameter such as hot water volume, turnover water temperature can calculate the heat energy of user's consumption. User is paid heat energy expense taking IC smart card as carrier, transmits data, it is achieved management function between management system and intellectual water meter.User is stored in the hot water energy of forward purchasing in table, and automatically deducts when use heat energy. When in table, surplus heat is less than certain value, warning of sounding, simultaneously valve-off, at this moment insert user's card and can open valve, and heat energy is bought in prompting in time. When surplus water is zero, valve-off, user again purchases heat energy and inserts card and open valve use heat energy.
Should be understood that, above-mentioned embodiment of the present utility model is only for exemplary illustration or explain principle of the present utility model, and does not form restriction of the present utility model. Therefore, any amendment of making when not deviateing spirit and scope of the present utility model, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model. In addition, the utility model claims are intended to contain in the equivalents falling into scope and border or this kind of scope and border whole change and modification.
Claims (7)
1. a SCM Based intelligence heat energy metering device, it is characterised in that, comprise the flow measurement module, water-in temperature-measuring module, water outlet temperature-measuring module and the IC-card management module that are connected with micro-chip principal controller; Motorized valve is managed the surplus heat information Control opening and closing of the IC-card that module reads by micro-chip principal controller by IC-card, described motorized valve is arranged on water-in, described micro-chip principal controller also connects LCD display module and alarm module, described LCD display module is for showing caloric information and failure message, and described alarm module is used for when the surplus heat information of IC-card is reported to the police lower than during threshold value.
2. SCM Based intelligence heat energy metering device according to claim 1, it is characterised in that, described alarm module comprises hummer and is arranged at the polychrome pilot lamp of measuring apparatus body surface.
3. SCM Based intelligence heat energy metering device according to claim 1, it is characterized in that, described display module comprises the LCD12232-9 display screen being connected and regulates the potentiometer of display comparison degree, and described LCD12232-9 display screen also connects micro-chip principal controller.
4. SCM Based intelligence heat energy metering device according to claim 1, it is characterised in that, described IC-card management module is M104X module.
5. SCM Based intelligence heat energy metering device according to claim 1, it is characterised in that, described micro-chip principal controller is MSP430FW427 micro-chip.
6. SCM Based intelligence heat energy metering device according to claim 1, it is characterised in that, described water-in temperature-measuring module and water outlet temperature-measuring module adopt PT1000 hot resistance measuring tempeature.
7. SCM Based intelligence heat energy metering device according to claim 1, it is characterized in that, described flow measurement module comprises impeller and gear, dry-reed tube switch installed by described gear, the inductance being provided with in a resonance loop above described impeller, the half of described impeller is covered with damping and amortization metallic substance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620052619.1U CN205318539U (en) | 2016-01-20 | 2016-01-20 | Intelligence heat energy metering device based on singlechip |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620052619.1U CN205318539U (en) | 2016-01-20 | 2016-01-20 | Intelligence heat energy metering device based on singlechip |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107195106A (en) * | 2017-04-08 | 2017-09-22 | 韦智生 | The water meter of preventing water burglary arrearage auto water stopping |
| CN108224816A (en) * | 2018-02-12 | 2018-06-29 | 武汉东湖学院 | A kind of solar water heater central heating information collection and display system and its control method |
-
2016
- 2016-01-20 CN CN201620052619.1U patent/CN205318539U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107195106A (en) * | 2017-04-08 | 2017-09-22 | 韦智生 | The water meter of preventing water burglary arrearage auto water stopping |
| CN108224816A (en) * | 2018-02-12 | 2018-06-29 | 武汉东湖学院 | A kind of solar water heater central heating information collection and display system and its control method |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160615 Termination date: 20190120 |
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| CF01 | Termination of patent right due to non-payment of annual fee |