CN201867897U - Non-contact radio-frequency IC (integrated circuit) card heat and cold meter - Google Patents
Non-contact radio-frequency IC (integrated circuit) card heat and cold meter Download PDFInfo
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- CN201867897U CN201867897U CN2010206468258U CN201020646825U CN201867897U CN 201867897 U CN201867897 U CN 201867897U CN 2010206468258 U CN2010206468258 U CN 2010206468258U CN 201020646825 U CN201020646825 U CN 201020646825U CN 201867897 U CN201867897 U CN 201867897U
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Abstract
The utility model relates to a non-contact radio-frequency IC (integrated circuit) card heat and cold meter, an inlet temperature acquisition module and an outlet temperature acquisition module respectively detect inlet water temperature and outlet water temperature of a heat exchange system of the meter, and are connected with corresponding ends of a controller MCU (Microprogrammed Control Unit) by an A/D converter; a flowmeter detects the flow rate flowing through the inlet of the heat exchange system, the output of the flowmeter is connected with a flow signal input end of the MCU, a read-write card circuit is in induction connection with an IC card, the output of the read-write card circuit is connected with a radio-frequency signal input end of the MCU, the output of the MCU is connected with the input of a valve driving circuit, and the output of the valve driving circuit controls the on/off of a valve on a meter body. The MCU calculates recharged heat and cold quantity in the IC card, and after information exchange, the MCU compares the heat and cold quantity calculated by the MCU with the heat and cold quantity recharged in the card so as to determine whether to open or close the valve; when the charge is overdue, heat is cut off automatically; and a user can pay for the charge and recharge at any time, so that the structure is simple, the operation is convenient, and the meter has the advantage of high charging reliability.
Description
Technical field
The utility model relates to the instrument field of measuring heat, especially according to purchasing heat and the device of purchasing hot time-based charging, specifically a kind of non-contact radio-frequency IC-card heat, cold table.
Background technology
At present, heat supply, cold meterage are reformed after carry out in the whole nation, the heat supply in vast northern area and middle part, and simultaneously, the metering of the cooling of southern area can reach the market capacity of nearly hundred billion yuan in covers up to a million with the annual requirement of calorimeter.
Traditional heat, cold table mainly are made up of counter, temperature sensor and flow sensor three parts.Wherein counter then is made up of analog to digital conversion circuit, microprocessor and display three parts, and analog-to-digital function is that the temperature (simulating signal) temperature sensor measurement converts the digital signal that microprocessor can be handled to; Microprocessor then is that the flow sensor that receives and the signal of the temperature after analog to digital conversion are handled; The function of display then is that data presentation that record and that calculate is come out, just solved the problem of record data, for thorny control problem, central heating, unified charge has all brought very big inconvenience for heat supply department and user, especially under the quite nervous situation of the current energy, how solving charge disperses, difficult charge, the problem of the difficulty of paying the fees, the management of heat supply system and charge reform are imperative especially, adopt pre-payment to make heat supply department conveniently charge, the user also can adjust the discharge of heating installation according to the needs of oneself, turns off heating installation unwanted the time, reduces expenses.Also have, multi-form IC-card heat, cold table have appearred in recent years both at home and abroad successively, wherein traditional Contact Type Ic Card, exist and make and use inconvenience, anti-close performance is bad, the deficiency that serviceable life is short etc., and the whole IC-card heat of influence, the use of cold table, cause the Fare Collection System instability, problems such as the difficult eliminating of fault.
Summary of the invention
The purpose of this utility model is at present heating, the existing difficult charge of cooling system, Fare Collection System instability, and the difficult problem of getting rid of of fault proposes a kind of non-contact radio-frequency IC-card heat, cold table.
The technical solution of the utility model is:
A kind of non-contact radio-frequency IC-card heat, it comprises the inlet temperature collect module cold table, the outlet temperature acquisition module, heat-exchange system, A/D converter, controller MCU, valve driving circuit, flowmeter and read-write card circuit, describedly go into, the outlet temperature acquisition module is going into of detection limit exterior heat exchange system respectively, the outlet water temperature, go into, the output of outlet temperature acquisition module by A/D converter corresponding with controller MCU go into, the outlet input end links to each other, flowmeter detects the flow through hot water of heat-exchange system inlet or the flow of cold water, the output of flowmeter links to each other with the flow signal input end of controller MCU, the read-write card circuit is connected with the induction of non-contact radio-frequency IC-card, the output of read-write card circuit links to each other with the radio-frequency (RF) signal input end of controller MCU, the output of controller MCU links to each other with the input of valve driving circuit, the break-make of valve on the output control table body of valve driving circuit.
Calorimeter of the present utility model also comprises display, power circuit and data-carrier store, power circuit provides working power for each module of calorimeter, and the shows signal output terminal of controller MCU links to each other with the respective signal input end of display and data-carrier store respectively with the data storage signal output part.
Temperature in acquisition module of the present utility model comprises that inlet temperature sensor and temperature in signal amplify, correction circuit, the inlet water temperature of inlet temperature sensor detection limit exterior heat exchange system, the output of inlet temperature sensor amplify, revise the back by the amplification of temperature in signal, correction circuit and link to each other with the corresponding input end of analog signal of A/D converter; The outlet water temperature of outlet temperature sensor detection limit exterior heat exchange system, the output of outlet temperature sensor are amplified, are revised the back by outlet temperature signal amplification, correction circuit and link to each other with the corresponding input end of analog signal of A/D converter.
The beneficial effects of the utility model:
The major function of non-contact radio-frequency IC-card of the present utility model and read-write card circuit is to finish the exchange of data message in the data message and scale controller MCU in the card, said information comprises the address of each MCU, heat, cold that MCU calculates, supplement heat, cold with money in the card, thereby MCU compared decision with heat, the cold of supplementing with money in the heat, cold and the card that self calculate and whether will drive valve or pass valve after message exchange was finished, when arrearage, promptly disconnected automatically warm.Whether controller MCU also will be transferred to self each several part hardware running status in the card, make things convenient for the timely discovery of background manage software to have hardware fault to take place.
The utility model is under the prerequisite that guarantees power consumption, can normally finish flow signal and the work of two-way selection of temperature signal, and after calculation process, obtain the correct heat release heat of the circulation system, and other necessary auxiliary data, last again the result by correct the showing of LCD, in addition, instrument also will possess fault detect and teletransmission communication function.
Radio-frequency (RF) IC card of the present utility model is hermetically sealed, contactless, has waterproof, protection against the tide and anti-advantage of attacking.
The utlity model has the liquid crystal display function, comprise heat, flow, integrated flux, advance return water temperature, accumulated operating time, surplus, owe electricity prompting, valve state etc. demonstration, content is comprehensive, function prompt is complete, the user can pay dues at any time and supplement with money.In the heating period, the user can stop heating (this moment, system did not charge) at any time, also can recover heating at any time, saves heating cost.Remaining sum can be accumulated to next heating season.
The utlity model has warning function, when voltage was low, valve-closing was reported to the police, and remaining sum (can be provided with) more after a little while closes the valve warning, supplements with money to remind the user.
Scale time switch valve of the present utility model prevents valve scaling.
Scale super low-power consumption of the present utility model, static working current＜10 μ A.
Description of drawings
Fig. 1 is a theory diagram of the present utility model.
Fig. 2 is charging flow figure of the present utility model.
Embodiment
Below in conjunction with drawings and Examples the utility model is further described.
As shown in Figure 1, a kind of non-contact radio-frequency IC-card heat, it comprises the inlet temperature collect module cold table, the outlet temperature acquisition module, heat-exchange system, A/D converter, controller MCU, valve driving circuit, flowmeter and read-write card circuit, describedly go into, the outlet temperature acquisition module is going into of detection limit exterior heat exchange system respectively, the outlet water temperature, go into, the output of outlet temperature acquisition module by A/D converter corresponding with controller MCU go into, the outlet input end links to each other, flowmeter detects the flow through hot water of heat-exchange system inlet or the flow of cold water, the output of flowmeter links to each other with the flow signal input end of controller MCU, the read-write card circuit is connected with the induction of non-contact radio-frequency IC-card, the output of read-write card circuit links to each other with the radio-frequency (RF) signal input end of controller MCU, the output of controller MCU links to each other with the input of valve driving circuit, the break-make of valve on the output control table body of valve driving circuit.
Calorimeter of the present utility model also comprises display, power circuit and data-carrier store, power circuit provides working power for each module of calorimeter, and the shows signal output terminal of controller MCU links to each other with the respective signal input end of display and data-carrier store respectively with the data storage signal output part.
Temperature in acquisition module of the present utility model comprises that inlet temperature sensor and temperature in signal amplify, correction circuit, the inlet water temperature of inlet temperature sensor detection limit exterior heat exchange system, the output of inlet temperature sensor amplify, revise the back by the amplification of temperature in signal, correction circuit and link to each other with the corresponding input end of analog signal of A/D converter; The outlet water temperature of outlet temperature sensor detection limit exterior heat exchange system, the output of outlet temperature sensor are amplified, are revised the back by outlet temperature signal amplification, correction circuit and link to each other with the corresponding input end of analog signal of A/D converter.
When purchasing heat, cold and calculate: the charging method of a kind of non-contact radio-frequency IC-card heat, cold table, it may further comprise the steps:
(a), at first, with purchase heat, cold is write in the radio-frequency (RF) IC card of access customer, the user is connected radio-frequency (RF) IC card with the read-write card circuit inductance, information data is by in radio frequency induction input non-contact radio-frequency IC-card heat, the cold table in the card, and the controller MCU of calorimeter leaves the valve heating by valve driving circuit;
(b), measure the hot water of the heat-exchange system of flowing through or the flow of cold water, and send measurement result to controller MCU with impulse form by flow measurement;
(c), by the entrance and exit water temperature of going into, the outlet temperature acquisition module is measured heat-exchange system, convert digital signal to and be sent to controller MCU by A/D converter, controller MCU adopts following Equation for Calculating to go out the heat that heat-exchange system discharges:
Q?=?∫
ρqν△hdτ
Wherein, Q: the heat that heat-exchange system discharges;
ρ: the Mi Du ㎏ of the water of the heat-exchange system of flowing through/;
Q ν: the flow velocity/h of the water of the heat-exchange system of flowing through;
τ: the time is the integral time that heat supply, cold calculate;
△ h: enthalpy is poor, by the enthalpy of the Han Zhi – outlet temperature correspondence of temperature in correspondence; It is poor according to the entrance and exit water temperature by the enthalpy that computation of table lookup goes out liquid,
(d), in user's heating process, scale middle controller MCU is automatically with the heating duration remaining cost in the table of examining and making cuts, when purchasing heating cost or time are used up, the valve that controller MCU closes on the hot water inlet pipe road by valve driving circuit stops heating; Described heating cost is: heat * heat unit price that heat-exchange system discharges.
Read-write card circuit of the present utility model and non-contact radio-frequency IC-card induction mode be, read-write card drives Inside coil sends electromagnetic field, and when IC-card was put into electromagnetic field, the IC-card Inside coil produced induced voltage, for card work provides energy; It is that read-write card drives Inside coil sends electromagnetic field that IC-card comes the modulate emission end by the short circuit Inside coil, the read-write card circuit demodulates received signal by the power of the IC-card modulation back electromagnetic field amplitude that the electromagnetic field amplitude of relatively launching and read-write card circuit receive, and realizes communicating by letter of read-write card circuit and non-contact radio-frequency IC-card.
In the electromagnetic field of transmitting terminal, if the electromagnetic field amplitude of transmitting terminal was not 3V when the IC-card Inside coil had short circuit, when IC-card Inside coil short circuit, will form a closed-loop path and induce electric current, magnetic field intercepts closed-loop path conductor, the loop will obtain energy-sensitive and go out electric current, thereby the electromagnetic field amplitude of transmitting terminal is weakened; Suppose that amplitude drops to 2.8V, read-write card circuit transmitting terminal receives information in the IC-card by electromagnetic field amplitude relatively so, and IC-card is represented output " 0 " or " 1 " by short circuit or breaking inner coil.
The flow velocity q ν=flow volume/τ of the water of the heat-exchange system of flowing through of the present utility model; Wherein, the coefficient of flow of umber of pulse * valve of sending of flow volume=flowmeter.
When purchasing heat, cool time and calculate: it may further comprise the steps:
(a), at first, the heating duration of buying is write in the radio-frequency (RF) IC card of access customer, the user is with in information input non-contact radio-frequency IC-card heat, the cold table in the radio-frequency (RF) IC card, and the controller MCU of scale leaves the valve heating by valve driving circuit;
(b), in user's heating process, scale middle controller MCU examines and makes cuts excess time in the table with heating duration automatically, when purchasing heating cost or time are used up, the valve that controller MCU closes on the hot water inlet pipe road by valve driving circuit stops heating; Described heating cost is: heat * heat unit price that heat-exchange system discharges.
Traditional AD conversion is the AD converter that carries that adopts among the MCU, because canonical reference power supply instability, its precision is not high.Use independently AD converter precision height, but cost is too high.The design adopts compromise method promptly to guarantee the high device cost that also reduced simultaneously of precision.Adopt high precision voltage stabilizer and measuring resistance to form high precise current source.This electric current temperature sensor (platinum thermistor) of flowing through will produce pressure drop on temperature sensor, different pressure drops takes turns the AD conversion to MCU to each passage by the sampling channel conversion chip.In order to overcome the circumstance of temperature difference variation temperature that the high precision voltage stabilizer causes is floated, two measuring resistance (1K have been adopted, 1.35K be respectively the lower limit of resistance of temperature sensor and the resistance of the upper limit) MCU carries out the AD conversion and then temperature sensor carried out the AD conversion two measuring resistances earlier, Rc=(* (Tc – T1k)/(the T1.35k – T1k) of 1.35K-1K) can calculate the resistance of temperature sensor according to the ratio of conversion, thereby the temperature that has effectively overcome device is floated the influence to the AD conversion accuracy.
During concrete enforcement:
The Presentation Function of counter has user loop, two menus in calibrating loop.Display as in user loop, surpasses 3 minutes attonity auto sleep in working order down; As surpassing 1 hour attonity auto sleep in the calibrating loop.No matter from where entering dormant state, from coming back to the starting point of custom menu after dormant state is waken up.
A, user loop menu
The main user oriented of this menu is for the user provides necessary use information.
B, accumulation heat
The heat that the continuous recording closed circuit consumes or absorbs.Unit: Kwh; Be shown to behind the radix point three, i.e. 0.001Kwh, accumulation shows.When video data during greater than 99999.999Kwh, display precision is dropped to 1Kwh, make maximum indication range reach 99999999Kwh, data are overflowed auto zero.
C, integrated flux
The continuous recording MEDIA FLOW is through the volume of closed circuit.Unit:; After work is shown to radix point three, both 0.001, accumulation shows.When video data greater than 99999.999 the time, display precision is dropped to 1, make maximum indication range reach 99999999, the data benefit goes out auto zero.After entering the calibrating state to be shown to radix point five, promptly 0.00001
D, inflow temperature
Unit: ℃, number of significant digit: 0.001 ℃
E, leaving water temperature
Unit: ℃, number of significant digit: 0.01 ℃
F, the temperature difference
Unit: ℃, number of significant digit: 0.01 ℃
G, instantaneous delivery
Unit :/h, number of significant digit: 0.001/h, data presentation is at interval less than 10 seconds.
H, working time
Accumulated operating time after the record calorimeter dispatches from the factory, unit is hour (h)
I, fault-time
When scale did not have fault to take place, the failure code menu did not show, directly forwards accumulative total heat, cold code menu to; When breaking down, show the reason-code that causes fault.This code should have clear and definite explanation and succinct easily note.When " electric weight deficiency " fault occurring, be significant data: heat history, cold, integrated flux, accumulated operating time and fault-time preserve (seeing L data protection part).After fixing a breakdown, show to recover normal, calorimeter is according to accumulation heat and working time, calculates the heat that breaks down during this period of time to be consumed, computing formula is age at failure heat (Kwh) * fault-time maximum instantaneous on a same day heat, and joins in the accumulation heat.
J, parametric compensation are set
0 ℃～30 ℃, 30 ℃～60 ℃, 60 ℃～90 ℃ temperature compensations of temperature range parameter setting, and there is the temperature compensation parameter of other scope that the Party B sets for every group of temperature measurement accuracy to set: (the heat compensation parameter setting of 50L/h～100L/h, 100L/h～500L/h, 500L/h～1000L/h, 1000L/h～1500L/h, 1500L/h～3250L/h, 3250L/h～5000L/h), memory is set (heat compensation that contains temperature range) by the Party B for satisfying other compensating parameter that the heat Calculation precision sets; Entering of parameter setting function should be accomplished confidentiality, and promptly ex privileges can't enter, and operation should be simple as far as possible.
The calculating of k, calorie value
Should be with reference to relevant pressure of thermodynamics and density, and then influence the correlation computations formula of heat enthalpy value temperature for heat enthalpy value influence, for (judging indirectly) under the different pressures with flow value, the quality of the isopyknic water under the different temperatures is revised, and select to calculate heat with the formula of Mass Calculation heat, perhaps select for use the compensation meter method to revise.
L, calibrating loop menu
This function provides more detailed information during for quality and Breakdown Maintenance, no matter examines and determine menu and how to operate, and does not influence user's measuring accuracy.
After entering the calibrating function, display system should be in the normal state that shows.Parameters enters real-time detected state, and can detect data in real time calculating and show related data according to each, require display refresh time less than 15 seconds, as do not reach the sampling time, can be with reference to estimating with interpolation, the way of measured value revisal realizes the real-time demonstration of data, but should be able to be issued to the shortest the interval time that response data is measured in the condition that guarantees measuring accuracy.
M, four major functions: control, setting, calculating and database.Control function is used for the operation of device flow process, function is set is used to examine and determine the setting of using data, and computing function is various correction, the Error Calculation that record data, required normal data of the main storage computation of database and verification result.Running program is simple and clear, and is multiple functional.
Timing type heat, cold table system are according to heating heating, the cold expense of user's corresponding time of paying, automatically whether the identification time of purchasing uses up, and prompt facility in advance arranged, and close automatically when this user intact late gate of hot expense that prestores, can heat once more after need supplementing with money again, cold.
Charging type heat, cold table system are usefulness heat, the cold expenses of paying according to the heating user, automatically whether the identification heat of purchasing, cold use up, and prompting in advance, close automatically when prestore heat, the intact late gate of cold expense of this user, can heat once more after need supplementing with money again.
System only opens the valve heating heating, cold period user, just charges when cold, and the user is closed valve and suspended heating, cold or in non-heating, cold period in heating, cold period, and system is accounting fee not.
The utility model does not relate to the part prior art that maybe can adopt all same as the prior art to be realized.
Claims (3)
1. non-contact radio-frequency IC-card heat, the cold table, it is characterized in that it comprises the inlet temperature collect module, the outlet temperature acquisition module, heat-exchange system, A/D converter, controller MCU, valve driving circuit, flowmeter and read-write card circuit, describedly go into, the outlet temperature acquisition module is going into of detection limit exterior heat exchange system respectively, the outlet water temperature, go into, the output of outlet temperature acquisition module by A/D converter corresponding with controller MCU go into, the outlet input end links to each other, flowmeter detects the flow through hot water of heat-exchange system inlet or the flow of cold water, the output of flowmeter links to each other with the flow signal input end of controller MCU, the read-write card circuit is connected with the induction of non-contact radio-frequency IC-card, the output of read-write card circuit links to each other with the radio-frequency (RF) signal input end of controller MCU, the output of controller MCU links to each other with the input of valve driving circuit, the break-make of valve on the output control table body of valve driving circuit.
2. non-contact radio-frequency IC-card heat according to claim 1, cold table, it is characterized in that described calorimeter also comprises display, power circuit and data-carrier store, power circuit provides working power for each module of calorimeter, and the shows signal output terminal of controller MCU links to each other with the respective signal input end of display and data-carrier store respectively with the data storage signal output part.
3. non-contact radio-frequency IC-card heat according to claim 1, cold table, it is characterized in that described temperature in acquisition module comprises that inlet temperature sensor and temperature in signal amplify, correction circuit, the inlet water temperature of inlet temperature sensor detection limit exterior heat exchange system, the output of inlet temperature sensor amplify, revise the back by the amplification of temperature in signal, correction circuit and link to each other with the corresponding input end of analog signal of A/D converter; The outlet water temperature of outlet temperature sensor detection limit exterior heat exchange system, the output of outlet temperature sensor are amplified, are revised the back by outlet temperature signal amplification, correction circuit and link to each other with the corresponding input end of analog signal of A/D converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206468258U CN201867897U (en) | 2010-12-08 | 2010-12-08 | Non-contact radio-frequency IC (integrated circuit) card heat and cold meter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010206468258U CN201867897U (en) | 2010-12-08 | 2010-12-08 | Non-contact radio-frequency IC (integrated circuit) card heat and cold meter |
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| Publication Number | Publication Date |
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| CN201867897U true CN201867897U (en) | 2011-06-15 |
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| CN2010206468258U Expired - Fee Related CN201867897U (en) | 2010-12-08 | 2010-12-08 | Non-contact radio-frequency IC (integrated circuit) card heat and cold meter |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102810226A (en) * | 2012-07-25 | 2012-12-05 | 杭州富阳仪表总厂 | Low-power-consumption high-precision heat meter |
| CN102938175A (en) * | 2012-10-22 | 2013-02-20 | 宁波甬港仪表有限公司 | Heat flow meter |
| CN103218878A (en) * | 2013-04-28 | 2013-07-24 | 山东三龙智能技术有限公司 | Low heat supplying control method and prepayment heat meter for achieving method |
-
2010
- 2010-12-08 CN CN2010206468258U patent/CN201867897U/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102810226A (en) * | 2012-07-25 | 2012-12-05 | 杭州富阳仪表总厂 | Low-power-consumption high-precision heat meter |
| CN102810226B (en) * | 2012-07-25 | 2014-08-06 | 杭州富阳仪表总厂 | Low-power-consumption high-precision heat meter |
| CN102938175A (en) * | 2012-10-22 | 2013-02-20 | 宁波甬港仪表有限公司 | Heat flow meter |
| CN103218878A (en) * | 2013-04-28 | 2013-07-24 | 山东三龙智能技术有限公司 | Low heat supplying control method and prepayment heat meter for achieving method |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
Assignee: Jiangsu third occasion Electronics Co., Ltd. Assignor: Wu Xingzhong Contract record no.: 2013320000831 Denomination of utility model: Non-contact radio-frequency IC (integrated circuit) card heat and cold meter Granted publication date: 20110615 License type: Exclusive License Record date: 20131225 |
|
| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110615 Termination date: 20181208 |
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| CF01 | Termination of patent right due to non-payment of annual fee |