CN1114893C - Fire alarm - Google Patents
Fire alarm Download PDFInfo
- Publication number
- CN1114893C CN1114893C CN96111490A CN96111490A CN1114893C CN 1114893 C CN1114893 C CN 1114893C CN 96111490 A CN96111490 A CN 96111490A CN 96111490 A CN96111490 A CN 96111490A CN 1114893 C CN1114893 C CN 1114893C
- Authority
- CN
- China
- Prior art keywords
- fire
- alarm
- offset
- asic
- voltage
- 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
Classifications
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B17/00—Fire alarms; Alarms responsive to explosion
Landscapes
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Fire Alarms (AREA)
- Fire-Detection Mechanisms (AREA)
Abstract
The fire alarm has a sensor for monitoring fire parameters, with a microprocessor and a trimmable voltage regulator (4) designed so that its output voltage (Ug) can be trimmed using a value stored in a register (11). The trim value is stored in a non-volatile memory (11) in the microprocessor (2) or is integrated into a specific circuit (1).
Description
Technical field
The present invention relates to a fire alarm system, contain sensor, a microprocessor and correctable voltage adjuster of an observation condition of a fire parameter.
Background technology
Voltage adjuster is given microprocessor with 20 volts to 30 volts out of true line voltage transitions to 5 volt supply voltage.Supply voltage deviation herein for example should not surpass reference value ± 3%.No doubt, on market, can obtain accurate voltage and adjust assembly, but contain following defective usually:
-power consumption is too high
-too expensive
-interference free performance is poor
-need expensive capacitor
-have only a manufacturer usually.
Summary of the invention
This invention is described to be a voltage adjuster, and its power consumption and price are obviously low than former, do not need expensive capacitor, can resist extraneous interference to greatest extent, and can obtain from a lot of manufacturers.
Method according to this problem of solution of inventing is characterized in that, constructs voltage adjuster like this, by measuring offset determined and that be stored in the register its output voltage is proofreaied and correct.
In according to fire alarm system of the present invention, the offset that voltage adjuster is stored in the register is proofreaied and correct.Therefore the requirement to adjuster itself can reduce greatly.Condition precedent according to first preferred embodiment of fire alarm system of the present invention is formed, in view of the above, and as far as possible according to the integrated realization voltage adjuster of the represented special circuit of following ASIC.The price that then can obtain by a relatively large margin by integrated and a small amount of electric capacity demand circuit reduces.
The input voltage of voltage adjuster such as 20 volts to 30 volts, be much higher than the supply voltage of microprocessor and ASIC, for example 5 volts.According to second preferred embodiment, provide a control assembly in the ASIC outside.According to the 3rd preferred embodiment, this external control component is made of the directly actuated knot of ASIC-field effect transistor J-FET.
Be when microprocessor contains an EEPROM and carries out two-way communication with ASIC according to the solution of the present invention advantageous particularly part, can the optimum utilization resource.Adjustment voltage adjuster when fire alarm system is produced, and corresponding bit mode is written into the EEPROM of microprocessor.This bit mode can write the register of ASIC in advance when fire alarm system starts, with the correction voltage adjuster.
In order to understand the present invention, the circuit essential part of fire alarm system is explained in more detail by means of example block diagram according to the present invention below.The basis of this warning system is known, can be with reference to the content of EP-A-0654770 for the introduction of basic content.
Description of drawings
This block diagram has shown the cross section and a microcontroller that links to each other with ASIC or microprocessor 2 of special circuit 1 (representing with ASIC).
Embodiment
One two-way data bus 3 is arranged between ASIC1 and microprocessor 2, and identifier K is the connection terminal of fire alarm system, can apply line voltage at this, for example 20 volts or 30 volts.
ASIC1 also comprises a circuit power manager except miscellaneous part, it has special voltage adjuster 4, the latter comprises an ingredient that is integrated among the ASIC1, comprise a reference voltage source 5, a control circuit 6, register 7 and a communication interface 8, and the discrete component that provides in the ASIC1 outside, i.e. control assembly 9 and auxiliary capacitor 10.Control section 9 mainly is made of a J-FET pipe or a depletion type MOS FET, and still can be controlled by ASIC when the actual motion no current.Microprocessor 2 contains a programmable nonvolatile memory 11.Such as PROM, EPROM or EEPROM and a communication interface 12.
Voltage adjuster 4 is adjusted to 5 volts of required voltage U g of ASIC1 and microprocessor 2 to the supply voltage of 20 volts or 30 volts, and this voltage should as far as possible accurately be adjusted.Voltage U g is connected to ASIC from voltage adjuster 4, continue to be connected to microprocessor 2 then, determine in the time interval one, preferably behind the circuit start in very short time, regulation voltage Ug, required bucking voltage separately is provided for voltage adjuster 4, this can realize by the state of register or the state of several digital signal lines.Offset separately determines that by the measured value of voltage U g this measurement mainly realizes in production run.Measured value Ug and theoretical value Us compare, and (Us-Ug) obtains correcting code and write store by difference.
Such as, being decided to be 100 for difference (Us-Ug) 0.1V correcting code, 0.15V is decided to be 115 for difference, by that analogy.Voltage U g is remeasured then by the correcting code correction, redefines difference (Us-Ug).When expected accuracy is provided with when reaching, calculate and write new correcting code, revise voltage U g again, repeat this process up to satisfying accuracy requirement.When reaching should precision be arranged the time, the correcting code that calculates at last writes nonvolatile memory 11, preserves in order to using.After warning system equipment is installed, at circuit start after very short time, provide by data bus 3 with to the communication interface of register 7 and to represent the correcting code of offset separately, and be sent to control circuit 6 from register 7, adjustment voltage U g.
Possibility is by progressively changing correcting code up to the precision that meets the expectation, progressively to determine offset.Definite process procedures of offset or be stored in the microprocessor 2 or be stored in process for this reason and in the testing apparatus prepared separately.Offset also can be special testing apparatus and directly determine by microprocessor 2, but need a voltage measuring apparatus and a suitable interface.
Offset also can write the nonvolatile memory of ASIC, but for correction effect ASIC must equip a programmable nonvolatile memory, solution at this said nonvolatile memory 11 exists in microprocessor 2, also is other the needed offset data of fire alarm system.
Claims (7)
1. fire-alarm, one sensors observe condition of a fire parameter is arranged, one microprocessor and a correctable voltage adjuster are arranged, it is characterized in that, voltage adjuster (4) is integrated in except that discrete component in the special circuit of representing with ASIC (1), and the formation of voltage adjuster (4) is can proofread and correct by the offset that is stored in the storer for its output voltage.
2. fire-alarm as claimed in claim 1 is characterized in that, an ASIC external control component (9) is provided.
3. fire-alarm as claimed in claim 2 is characterized in that, external control component (9) is one can be made of the directly actuated J-FET of ASIC (1).
4. as the described fire-alarm of one of claim 1 to 3, it is characterized in that offset is stored in the nonvolatile memory (11) of microprocessor (2).
5. fire-alarm as claimed in claim 1 is characterized in that, ASIC (1) has a correcting register (7) and a communication interface (8), and for correction voltage adjuster (4), the offset in the correcting register can be updated.
6. as claim 1,2, one of 3 or 5 described fire-alarms, it is characterized in that, in alarm device fabrication process, measure offset in advance, measure output voltage and with theoretical value relatively, by means of with the difference of theoretical value, obtain representing the correcting code of offset.
7. fire-alarm as claimed in claim 6 is characterized in that, determines correcting code by a repetitive process.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP95113206.7 | 1995-08-23 | ||
| EP95113206A EP0759602B1 (en) | 1995-08-23 | 1995-08-23 | Fire detector |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1149145A CN1149145A (en) | 1997-05-07 |
| CN1114893C true CN1114893C (en) | 2003-07-16 |
Family
ID=8219548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN96111490A Expired - Fee Related CN1114893C (en) | 1995-08-23 | 1996-08-23 | Fire alarm |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP0759602B1 (en) |
| CN (1) | CN1114893C (en) |
| AT (1) | ATE208074T1 (en) |
| AU (1) | AU6060496A (en) |
| DE (1) | DE59509782D1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101810814B (en) * | 2010-04-28 | 2011-08-10 | 史建钢 | Medicament for curing cerebral palsy, hyperkinetic syndrome and dementia and preparation method thereof |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100454347C (en) * | 2005-12-31 | 2009-01-21 | 首安工业消防有限公司 | Data fusion alarm system and method for linear fire detector |
| US11960311B2 (en) * | 2020-07-28 | 2024-04-16 | Medtronic Minimed, Inc. | Linear voltage regulator with isolated supply current |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4287515A (en) * | 1979-04-27 | 1981-09-01 | Baker Industries, Inc. | Fire detection system with multiple output signals |
| DE3330270A1 (en) * | 1982-08-23 | 1984-02-23 | Tektronix, Inc., 97077 Beaverton, Oreg. | METHOD AND DEVICE FOR SELF-CHECKING |
| CN2081114U (en) * | 1990-12-28 | 1991-07-17 | 魏天赐 | Multifunctional household alarm for preventing theft and fire |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CH686913A5 (en) | 1993-11-22 | 1996-07-31 | Cerberus Ag | Arrangement for early detection of fires. |
-
1995
- 1995-08-23 AT AT95113206T patent/ATE208074T1/en not_active IP Right Cessation
- 1995-08-23 DE DE59509782T patent/DE59509782D1/en not_active Expired - Fee Related
- 1995-08-23 EP EP95113206A patent/EP0759602B1/en not_active Expired - Lifetime
-
1996
- 1996-07-22 AU AU60604/96A patent/AU6060496A/en not_active Abandoned
- 1996-08-23 CN CN96111490A patent/CN1114893C/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4287515A (en) * | 1979-04-27 | 1981-09-01 | Baker Industries, Inc. | Fire detection system with multiple output signals |
| DE3330270A1 (en) * | 1982-08-23 | 1984-02-23 | Tektronix, Inc., 97077 Beaverton, Oreg. | METHOD AND DEVICE FOR SELF-CHECKING |
| CN2081114U (en) * | 1990-12-28 | 1991-07-17 | 魏天赐 | Multifunctional household alarm for preventing theft and fire |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101810814B (en) * | 2010-04-28 | 2011-08-10 | 史建钢 | Medicament for curing cerebral palsy, hyperkinetic syndrome and dementia and preparation method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1149145A (en) | 1997-05-07 |
| EP0759602B1 (en) | 2001-10-31 |
| AU6060496A (en) | 1997-02-27 |
| EP0759602A1 (en) | 1997-02-26 |
| DE59509782D1 (en) | 2001-12-06 |
| ATE208074T1 (en) | 2001-11-15 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C56 | Change in the name or address of the patentee |
Owner name: SWITZERLAND SIEMENS CO., LTD. Free format text: FORMER NAME OR ADDRESS: SIEMENS CONSTRUCTION TECHNOLOGY GMBH |
|
| CP03 | Change of name, title or address |
Address after: Zurich Patentee after: Siemens Schweiz AG Address before: Zurich Patentee before: Siemens Building Technologies AG |
|
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20030716 |