CN86203276U - Automatic detector for taximeter - Google Patents
Automatic detector for taximeter Download PDFInfo
- Publication number
- CN86203276U CN86203276U CN 86203276 CN86203276U CN86203276U CN 86203276 U CN86203276 U CN 86203276U CN 86203276 CN86203276 CN 86203276 CN 86203276 U CN86203276 U CN 86203276U CN 86203276 U CN86203276 U CN 86203276U
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- Prior art keywords
- taximeter
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Abstract
The utility model relates to an automatic detector for detecting the calibration value of a mechanical taximeter for a taxi, which is characterized in that the utility model is composed of a control circuit composed of a frequency selecting and amplitude modulating network and a bistable triggering network, and a voice picking-up device. The aim of the utility model is to once continuously detect the rotation value of the basic-price mileage of two main parameters and the waiting time value, the rotation value and the waiting time value are displayed by a digital display, and the utility model enhances measurement precision and shortens measurement time.
Description
The utility model be in order to tax in the base price of taxi mechanical type jeton (be called for short base price in tax), at interval mileage and when waiting the time Several Parameters carry out the instrumentation that follow-on test is adjusted.
The employed taximeter of taxi on the market has three kinds of mechanical type, mechanical electronic mode and full electronics by its structure.The taximeter of which kind of structure all is by the walking mileage of metering taxi and the time when waiting, the speed ratio of being demarcated when dispatching from the factory by taximeter is 37.5 commentaries on classics/kilometers, with digital form its price is shown (Guangzhou in 1985 the promulgation every kilometer price as table one, shown in).Because whether the metering of taximeter time to the walking mileage with when waiting is accurate, be directly connected to consumers in general's immediate interest, therefore must regularly demarcate detection with the high detector of a precision to taximeter.
Common demarcation detecting instrument is generally two classes now:
One class is a plain type.When measuring base price mileage value, drive standard mechanical odometer and tested taximeter simultaneously by a motor, with the manual control power switch, connect motor and make tested taximeter and the synchronous operation of standard odometer, when forwarding ratings taximeter jumping table to, be powered-down, read the actual mileage number of tested taximeter this moment from the mechanical digital display of standard mechanical odometer.Because the precision of common mechanical odometer is 1/10 kilometer (100 meters), adds artificial visual angle error, such measuring accuracy is not enough.After measuring the base price mileage, the time during time of other usefulness stopwatch hand dipping taximeter.
This plain type is measured, and method is simple, and material is easily looked for, but because whole measuring process all needs manual segmentation to divide instrument monitoring, and can only survey a taximeter at every turn, both time-consuming, tiring again, precision is not high.
Another kind of is advanced at present, and Japan produces the product of the NISHIBE company of specialized factory of taximeter: device is decided in 1448 these machine examinations of type taxi taximeter.Be characterized in and measure taximeter by unit.Both but measurement mechanical formula, mechanical electronic mode taximeter can be measured the electronic type taximeter again; Can also survey 10/time together to taximeter of the same type; And can regulate arbitrarily measuring speed (speed of motor just), show measured value by the LED digital indicator.This instrument adopts accurate electronic circuit, and precision is higher, and error can reach 1/100 changes (closing 0.33 meter).The weak point of its instrument is to measure base price mileage value.Because this is a kind of instrument that screens type; be used for the big production of taximeter, can the jumping table in rated revolution so can only demonstrate tested table, as on earth running what kilometer the time jump table; then the rotating shaft of the taximeter that will shake by hand after shutdown is measured, automatically testing result.The measurement of time function is still the same with plain type during for time, adopts artificial stopwatch to measure.
In order to improve accuracy of detection, shorten Measuring Time, under not disintegration situation to two Main physical amount base price mileages of taxi taximeter with wait the test of intercropping one-time continuous constantly, the utility model has adopted more accurate electronic control circuit, photoelectric conversion technique and sound control technique have been adopted, two numerical value surveying are continuously shown simultaneously by two light-emitting diode displays respectively, be convenient to the debugging and testing personnel taximeter is examined and determine and adjusted.Save manpower, improve measuring accuracy.
Below in conjunction with accompanying drawing the utility model is made a detailed descriptionthe:
Figure one is the schematic appearance of the utility model device: by power switch (1), duty control knob (2), display numeral zero setting button (3) and base price at interval mileage measure the control system that start button (4) is formed this device, control D.C. voltmeter (5), preparation work status indicator lamp (6), base price mileage digital indicator (7) respectively, the switching of surveying work pilot lamp (10) when time digital indicator (8) and mileage surveying work pilot lamp (9) and time when waiting.The taxi taximeter is placed on the test axle (11), three lead-in wires of taximeter are connected on respectively on power supply wiring hole (12) when waiting, ceiling light power supply wiring hole (13) and the flag lamp power supply wiring hole (14), and simulation ceiling light pilot lamp (16), ground wire wiring hole (15) are housed on detector, in order to subsidiary flag lamp, the ceiling light operation circuit performance that detects taximeter.In order to improve detection speed, other is added with the voltage-regulation knob (18) of two grades of S/COs and an adjusting complete machine operating voltage.
Figure two is entire circuit block schemes of the utility model device, and wherein, the 1.2.3.4.5.6.7.8.9.10.11. in the block scheme is the same with the pairing numeral of Fig. 1 respectively.Its operating process is as follows: before measuring the taxi taximeter at every turn, by the earlier selected measuring speed of S/CO (17), behind the power turn-on (1), check that preparation work status indicator lamp (6) is logical, lamp goes out, then need press duty gauge tap (2), make lamp bright, indication circuit is in normal preparation work state, press taximeter zero setting button (3) then, start nulling circuit (27), make two demonstrations (7.8.) zero setting, press the base price mileage again and measure start button (4), drive tested taximeter (19) running, through photoelectric switching circuit (20) revolution is become electric pulse simultaneously and send into revolution counter (21) and hand over revolution display (7) demonstration that adds up by direct current motor (11).When tested taximeter (19) forwards ratings jumping table to, its machinery is jumped the acoustic pickup (23) of table sound in control circuit (22) and is examined, become a switching pulse, make the bistable trigger work upset in the control circuit (22), relay is connected, time-base signal (24) is sent into standard wait hour counter timing circuit (25), send into the demonstration that adds up on the time display (8) when waiting.This time-base signal (24) triggers time-base oscillation circuit (26) the starting timing of tested taximeter simultaneously, when treating that tested taximeter counting reaches time rating (standard is 2 minutes), produce and jump table sound for the second time, the acoustic pickup (23) of Be Controlled circuit (22) detects, the upset of trigger switch circuit working, stop the output of time base circuit signal, time counter (25) quits work synchronously with the time-base oscillation circuit (26) of tested taximeter when making time.So far, the circuit working of full tester stops, and the value shown in the time display (8) is the real work value of this tested taximeter when revolution display (7) and time, if be not inconsistent with standard value, can adjust tested taximeter on testing table, measures again.
Figure three is electrical schematic diagrams of the control circuit (22 among the above-mentioned figure two) in the utility model device.Wherein, by resistance R
3, R
5, capacitor C
1, C
2Form frequency selection network, through BG
1, BG
2After the compound amplification by C
4, W
1, R
8Form negative feedback gain control amplitude modulator, purpose makes the jumping of picking up from acoustic pickup show the existing certain frequency restriction of mechanical audio frequency certain amplitude again, strengthens the anti-interference of tester.This signal is through BG
3After the amplification, send into by BG
4, BG
5, D
1, D
2, C
8, C
9, C
10And R
14, R
15, R
16, R
17, R
18, R
19The bistable trigger switch circuit of forming.When connecting the measurement power supply, J
1Conducting, the work of base price mileage revolution counter.When treating tested taximeter jumping table, audio signal is touched BG
7Closure, BG
6Unblank makes J
1Open circuit, J
2Conducting touches time counting circuit connection when waiting, time counter synchronisation work during time.Treat tested taximeter once more during the jumping table, BG
6Open circuit, J
2Also quit work, whole measurement stops.
In the circuit by K
1, C
3The duty gauge tap of forming (shown among the figure two 2), the time only need be pressed K during parameter again when the needs list is surveyed the time of tested taximeter
1Key makes J
2Connect, just can carry out back one parametric measurement.
In order to reduce alternating current generator in the frequency interferences in when operation, this tester adopts permanent magnet DC motor source that is used as power.For the inertia that prevents from after direct current motor is shut down, to still have, and influence the measuring accuracy of timing circuit, shown in figure four, be connected to a kind of straight consumption type dynamic inertia elimination circuit in the utility model.Among the figure
Be permanent magnet direct current motor, J
4, J
5Be the rotor contact, J
4bAnd J
5bConnect the both positive and negative polarity of power supply respectively, at contact J
4aAnd J
5bOn to be connected to a resistance be 0.05 ohm short-circuited conducting sleeve.The direct current that motor is produced when doing the coast campaign consumes on short-circuited conducting sleeve automatically, the influence of measuring when reducing time.More than the concrete numerical value of each element see Table two.
Because the utility model adopts above-mentioned series of measures, but to needed several key datas both one-shot measurement, but also certain data of independent measurement; Easy and simple to handle, measuring speed is fast, and the complete machine numerical measuring needs 4 minutes and 40 seconds at the jogging speed shelves, and shelves only need 3 minutes and 40 seconds fast; Certainty of measurement height, base price mileage measure error reach 1/100 turns to (about 0.33m), during time the time measurement error reach ± 1 second.
Attached:
The taximeter acceptance criteria of Bureau of Public Security of Guangzhou City's promulgation in 1985:
One, ultra-luxury mode vehicle (dispatch from the factory the eighties)
Base price: 2.40 yuan of base price mileages are no less than 2.8 kilometers
Jump the list position: jump 250 meters of table spacing distances for 0.20 yuan
Jump and show 2 minutes ± 5 seconds interval time
Or jump the list position: jump 375 meters of table spacing distances for 0.30 yuan
Jump and show 3 minutes ± 7.5 seconds interval time
Two, luxury vehicle: (dispatch from the factory the eighties)
Base price: 2.10 yuan of base price mileages are no less than 2.8 kilometers
Jump the list position: jump 285.71 meters of table spacing distances for 0.20 yuan
Jump and show 2 minutes ± 5 seconds interval time
Three, standard vehicle (dispatch from the factory the seventies)
Base price: 1.80 yuan of base price mileages are no less than 2.8 kilometers
Jump the list position: jump 333.33 meters of table spacing distances for 0.20 yuan
Jump and show 2 minutes ± 5 seconds interval time
Four, no air-conditioned coach
Base price: 1.50 yuan of base price mileages are no less than 2.8 kilometers
Jump the list position: jump 200 meters of table spacing distances for 0.10 yuan
Jump and show 1 minute and 30 seconds ± 4 seconds interval time
Table one
△R
351K R
5，82K R
8100Ω
R
142KΩ R
152KΩ R
164.7KΩ
R
174.7KΩ R
1822KΩ R
1922KΩ
W
150K Ω adjustable resistance
△C
10.1μF 50V C
20.1μF 50V C
51μF 50V
C
80.2μF 50V C
9～104.7μF 25V
△BG
19014（npn） BG
29015（pnp）
BG
3～79014（npn）
△D
1～D
22CP11
△ J
1～2: microminiature 1 * 2 9V supersensitive relay
△ K
1: 1 * 2 pushbutton switch certainly resets
△
: the small-sized permanent magnetic stator formula DC motor of 12V.
△ MIC: microminiature electret capacitor sound conducting apparatus.
Table two
Claims (4)
1, the taxi taximeter automatic tester of being made up of LED digital indicator, working station indicator, permanent magnet direct current motor and control button, time measuring circuit is by the control circuit control that sound-controlled apparatus is housed when it is characterized in that base price mileage metering circuit and time.
2,, it is characterized in that the said control circuit that sound-controlled apparatus is housed is made up of frequency-selecting modulation circuit and bistable trigger switch circuit according to the said taxi taximeter of claim 1. automatic tester.
3,, it is characterized in that in said frequency-selecting modulation circuit, an acoustic pickup being arranged according to the said taxi taximeter of claim 2. automatic tester.
4,, it is characterized in that the two ends of rotor J of the permanent magnet direct current motor in said base price mileage metering circuit according to the said taxi taximeter of claim 1. automatic tester
4a, J
5aBe connected to a resistance and be 0.05 ohm short-circuited conducting sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86203276 CN86203276U (en) | 1986-05-21 | 1986-05-21 | Automatic detector for taximeter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 86203276 CN86203276U (en) | 1986-05-21 | 1986-05-21 | Automatic detector for taximeter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN86203276U true CN86203276U (en) | 1987-05-20 |
Family
ID=4806612
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 86203276 Ceased CN86203276U (en) | 1986-05-21 | 1986-05-21 | Automatic detector for taximeter |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN86203276U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005167A (en) * | 2010-09-30 | 2011-04-06 | 广州市计量检测技术研究院 | Verification and sampling method for LED (light-emitting diode) screen taximeter |
-
1986
- 1986-05-21 CN CN 86203276 patent/CN86203276U/en not_active Ceased
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102005167A (en) * | 2010-09-30 | 2011-04-06 | 广州市计量检测技术研究院 | Verification and sampling method for LED (light-emitting diode) screen taximeter |
| CN102005167B (en) * | 2010-09-30 | 2012-11-21 | 广州市计量检测技术研究院 | Verification and sampling method for LED (light-emitting diode) screen taximeter |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CE01 | Termination of patent right | ||
| CE01 | Termination of patent right |
Termination date: 19871202 |