GB1458437A - Central warning apparatus for vehicles - Google Patents
Central warning apparatus for vehiclesInfo
- Publication number
- GB1458437A GB1458437A GB1629374A GB1629374A GB1458437A GB 1458437 A GB1458437 A GB 1458437A GB 1629374 A GB1629374 A GB 1629374A GB 1629374 A GB1629374 A GB 1629374A GB 1458437 A GB1458437 A GB 1458437A
- Authority
- GB
- United Kingdom
- Prior art keywords
- sensors
- lamps
- alarm
- discriminators
- vehicle
- 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
Links
Classifications
-
- G—PHYSICS
- G07—CHECKING-DEVICES
- G07C—TIME OR ATTENDANCE REGISTERS; REGISTERING OR INDICATING THE WORKING OF MACHINES; GENERATING RANDOM NUMBERS; VOTING OR LOTTERY APPARATUS; ARRANGEMENTS, SYSTEMS OR APPARATUS FOR CHECKING NOT PROVIDED FOR ELSEWHERE
- G07C5/00—Registering or indicating the working of vehicles
- G07C5/08—Registering or indicating performance data other than driving, working, idle, or waiting time, with or without registering driving, working, idle or waiting time
- G07C5/0816—Indicating performance data, e.g. occurrence of a malfunction
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B23/00—Alarms responsive to unspecified undesired or abnormal conditions
-
- G—PHYSICS
- G08—SIGNALLING
- G08B—SIGNALLING OR CALLING SYSTEMS; ORDER TELEGRAPHS; ALARM SYSTEMS
- G08B29/00—Checking or monitoring of signalling or alarm systems; Prevention or correction of operating errors, e.g. preventing unauthorised operation
- G08B29/12—Checking intermittently signalling or alarm systems
- G08B29/126—Checking intermittently signalling or alarm systems of annunciator circuits
Landscapes
- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Engineering & Computer Science (AREA)
- Computer Security & Cryptography (AREA)
- Emergency Alarm Devices (AREA)
- Lighting Device Outwards From Vehicle And Optical Signal (AREA)
Abstract
1458437 Alarm systems NIPPONDENSO CO Ltd and TOYOTA JIDOSHA KOGYO KK 11 April 1974 16293/74 Heading G4H A central warning apparatus for a vehicle comprises a plurality of sensors associated with respective portions of the vehicle to be monitored and connected via discriminators to respective display means, the discriminators also feeding main warning means via an OR gate, there being a checking circuit for causing the display means to produce abnormality indications even when the sensors are producing normal outputs. Fig. 5 shows on/off sensors (contacts) 1 and analogue sensors (thermistors) 1<SP>1</SP>. An alarm condition which opens any of contacts 1 lights a corresponding alarm lamp 5 by rendering conducting a respective transistor 10 in a discriminator 2. An alarm condition which actuates a thermistor 1<SP>1</SP> sufficiently, lights a corresponding lamp 5 via a respective transistor 20 in a discriminator 2. Buzzers may replace the lamps. Any of the alarm conditions will actuate the flasher unit of a main warning lamp via an OR gate 32, 33, 34. A timer 7a actuated by the vehicle ignition switch changes over contacts of a relay 15 for a period to light all the lamps to permit the vehicle driver to check that all are functioning, the lamps 5 being lit via the circuitry of the discriminators 2 so these are checked also. The sensors may be divided into two groups (urgent and not urgent) with respective OR gates and respective main warning lamps. Fig. 3 shows a modification for one on/off sensor 1 and the associated circuitry, the checking unit 7 being actuated by a manual switch.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1629374A GB1458437A (en) | 1974-04-11 | 1974-04-11 | Central warning apparatus for vehicles |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB1629374A GB1458437A (en) | 1974-04-11 | 1974-04-11 | Central warning apparatus for vehicles |
Publications (1)
Publication Number | Publication Date |
---|---|
GB1458437A true GB1458437A (en) | 1976-12-15 |
Family
ID=10074715
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB1629374A Expired GB1458437A (en) | 1974-04-11 | 1974-04-11 | Central warning apparatus for vehicles |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB1458437A (en) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2465999A1 (en) * | 1979-09-25 | 1981-03-27 | Nissan Motor | MULTI-FUNCTIONAL MEASURING APPARATUS FOR VEHICLES |
-
1974
- 1974-04-11 GB GB1629374A patent/GB1458437A/en not_active Expired
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
FR2465999A1 (en) * | 1979-09-25 | 1981-03-27 | Nissan Motor | MULTI-FUNCTIONAL MEASURING APPARATUS FOR VEHICLES |
US4356470A (en) | 1979-09-25 | 1982-10-26 | Nissan Motor Co., Ltd. | Multifunction electronic meter for vehicle |
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Legal Events
Date | Code | Title | Description |
---|---|---|---|
PS | Patent sealed | ||
746 | Register noted 'licences of right' (sect. 46/1977) | ||
PE20 | Patent expired after termination of 20 years |
Effective date: 19940410 |