CN108198252B - Intelligent verification, acquisition and transmission device and method for taximeter - Google Patents
Intelligent verification, acquisition and transmission device and method for taximeter Download PDFInfo
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- CN108198252B CN108198252B CN201810133638.0A CN201810133638A CN108198252B CN 108198252 B CN108198252 B CN 108198252B CN 201810133638 A CN201810133638 A CN 201810133638A CN 108198252 B CN108198252 B CN 108198252B
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- 238000012795 verification Methods 0.000 title claims abstract description 40
- 238000000034 method Methods 0.000 title claims abstract description 20
- 230000005540 biological transmission Effects 0.000 title claims abstract description 17
- 238000012545 processing Methods 0.000 claims abstract description 63
- 238000004891 communication Methods 0.000 claims abstract description 20
- 238000005070 sampling Methods 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 11
- 238000003556 assay Methods 0.000 description 3
- 230000008901 benefit Effects 0.000 description 3
- 230000008569 process Effects 0.000 description 3
- 230000001010 compromised effect Effects 0.000 description 2
- 238000013500 data storage Methods 0.000 description 2
- 238000001514 detection method Methods 0.000 description 2
- 230000000737 periodic effect Effects 0.000 description 2
- 230000004044 response Effects 0.000 description 2
- 230000029305 taxis Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000002238 attenuated effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
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Classifications
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- G—PHYSICS
- G07—CHECKING-DEVICES
- G07B—TICKET-ISSUING APPARATUS; FARE-REGISTERING APPARATUS; FRANKING APPARATUS
- G07B13/00—Taximeters
- G07B13/02—Details; Accessories
- G07B13/06—Driving arrangements
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P90/00—Enabling technologies with a potential contribution to greenhouse gas [GHG] emissions mitigation
- Y02P90/02—Total factory control, e.g. smart factories, flexible manufacturing systems [FMS] or integrated manufacturing systems [IMS]
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Abstract
The invention discloses an intelligent verification, acquisition and transmission device and method for a taximeter, wherein the device comprises an acquisition and transmission device and a receiving and processing device; in the acquisition and emission device, an interface circuit, a first signal processing circuit and a signal modulation circuit are all connected with a first CPU processor; interface circuit through I 2 The C bus is connected with the price meter; in the receiving processing device, a receiving circuit, a second signal processing circuit and a signal modulation circuit are all connected to a second CPU processor; the system also comprises a data memory, a keyboard, a display and an electronic switch circuit which are connected to the second CPU through an I/O port; the drive transmitting circuit and the receiving circuit are in communication connection. The invention can realize real-time communication between the calibrating device or the standard device of the metering department and the checked price meter, thereby greatly saving the calibrating operation time and the intensity and simultaneously greatly reducing the error generated by manual sampling.
Description
Technical Field
The invention relates to the field of metering verification of taximeters, in particular to an intelligent verification, acquisition and transmission device and method for a taximeter.
Background
The taximeter is a metering device for measuring duration of taxi and mileage according to signals transmitted by mileage sensor, and calculating and displaying charge due to taxi of passenger based on the measured time and mileage. According to the rule of the existing national metrological verification rule JJG517-2016 taximeter, the taximeter adopts a roller ranging method or a driving ranging method after loading, the arbitration verification adopts the roller ranging method, and the periodic verification (the periodic verification is 1 year) of the taximeter adopts the roller ranging method through investigation of legal metrological verification institutions in all provinces of China in view of site limitation and the convenience of verification work.
According to the requirements of national metering verification regulations JJG517-2016 'taxi meter' verification method, a driving wheel of a taxi which accords with tire air pressure is placed on a roller of a roller ranging type taxi meter verification device, the roller is started to rotate until the linear speed reaches 60km/h or 40km/h (generally 60km/h is selected), a verification personnel sits on a secondary seat of a cab to observe a meter screen of a tested meter, and when the meter value reaches a specified verification point (generally 1 km), a sampling key of a verification device controller is immediately pressed to sample and record a sampling value, wherein the value is the meter value measured by the verification device. The detection points are not less than three points, including a departure point (generally not less than 1 km) and two continuation points (the minimum mileage counted after departure is generally 100 m). As can be seen from the assay methods specified by the assay protocol described above, the sample values are sampled by the human eye of the inspector in the process of "looking" at "judging" the "key", which typically requires 0.5s to 0.8s from the time of seeing and pressing "the sample key" in the case of a better condition, and longer than 1.2s or more if the inspector is somewhat tired. The corresponding sampling values in the time of 0.5s, 0.8s and 1.2s are respectively 8.3m, 13.3m and 20m calculated according to the speed of 60km/h, namely the errors generated by artificial factors are respectively-0.8 percent, -1.3 percent and-2.0 percent calculated according to 1 km.
Whether the pricing function of the meter is accurately and directly related to the economic benefits of taxi drivers and passengers. If the fee charged by the counter is higher than the actual amount payable, the consumer's benefit is compromised, whereas the driver's benefit is compromised. The maximum allowable error of the meter per se is +/-0.5%, and the maximum allowable error of the meter after loading is regulated to be-4.0% - +1.0%, because in the actual verification process, the difference of the model, the tire pressure and the tire pattern abrasion degree can influence sampling values, the influence of human factors on the log acquisition value is large in proportion, the response lag of the human is large in negative difference and randomness, so that the verification regulation expands the maximum allowable error of the meter after loading to be-4.0% - +1.0%, the median value is-1.5%, the maximum allowable error is still negative, and the problem is that a driver ' has ' loss ' on the surface, and the key of the problem is that the error is ' amplified ' and uncertainty caused by the verification method or the lag of the verification device.
Meanwhile, due to the working requirements of a metering department, when the taximeter is checked, the related information of the taxis and the taximeters, such as the number of each taxi, the number of the taximeter, the k value, the critical speed, the time, the verification period and the like, must be recorded, and the recorded information is large in quantity and the workload is also large.
Disclosure of Invention
In order to overcome the defects of the prior art, the invention provides an intelligent verification, acquisition and transmission device and method for a taximeter.
The technical scheme of the invention is as follows:
an intelligent verification, acquisition and transmission device of a taximeter comprises an acquisition and transmission device and a receiving and processing device;
the acquisition and emission device comprises a first CPU processor; the device also comprises an interface circuit, a first signal processing circuit and a signal modulation circuit; the control end of the interface circuit, the control end of the first signal processing circuit and the control end of the signal modulation circuit are all connected to the first CPU processor; the signal input end of the interface circuit passes through I 2 The C bus is in communication connection with the price meter; the pulse signals received by the interface circuit are transmitted to the signal input end of the first signal processing circuit; the signal output end of the first signal processing circuit is connected to the signal input end of the signal modulation circuit; the device also comprises a drive transmitting circuit; signal signalThe signal output end of the modulation circuit is connected to the signal input end of the drive transmitting circuit; driving the transmitting circuit to transmit a pulse signal;
the receiving processing device comprises a second CUP processor; the device also comprises a receiving circuit, a second signal processing circuit and a signal demodulation circuit; the control end of the receiving circuit, the control end of the second signal processing circuit and the control end of the signal modulation circuit are all connected to the second CPU processor; the system also comprises a data memory, a keyboard, a display and an electronic switch circuit which are connected to the second CPU through an I/O port; the signal output end of the receiving circuit is connected with the signal input end of the signal demodulation circuit; the signal output end of the signal demodulation circuit is connected to the signal input end of the second signal processing circuit;
the drive transmitting circuit and the receiving circuit are in communication connection.
A method for detecting, collecting and transmitting taximeters only comprises the following steps:
1) Defining each fixed driving mileage s as a section; setting the number of segments of the pulse signal to n, n=0; setting segment values in the receiving and processing device through a display and a keyboard;
2) The collecting and transmitting device is in communication connection with the price meter; zero clearing of the driving mileage in the calibrating device;
3) As the driving wheel of the taxi rotates, the taximeter starts to record the driving mileage; under the control of the first CPU processor, the interface circuit is communicated with the price meter; each time the mileage calculated by the meter passes s, the meter outputs a pulse signal or pulse turning signal; the interface circuit receives the pulse signals sent by the price meter, sequentially transmits the pulse signals to the first signal processing circuit and the signal modulation circuit, and finally sends the pulse signals through the drive transmitting circuit;
4) The receiving circuit and the driving transmitting circuit are in wireless communication;
5) Under the control of the second CPU processor, the pulse signals or pulse inversion signals received by the receiving circuit are sequentially processed by the signal demodulation circuit and the second signal processing circuit, and the pulse signals or pulse inversion signals output by the price meter are converted into segment values: n=n+1 for each pulse signal or pulse inversion signal received; recording the segment values in a data memory;
6) When the number of the received segments is consistent with the set segment value of the receiving processing device, triggering the electronic switch circuit to sample the log value of the verification device.
The beneficial technical effects of the invention are as follows:
in order to improve the accuracy of the taximeter collecting data in the verification process, avoid the collecting errors caused by the randomness of the response of the person with the 'observation' -judgment '-button', lighten the working pressure and fatigue of a tester, invent a 'taxi taximeter intelligent verification collecting and transmitting device' (hereinafter referred to as a 'transmitting device'), the 'transmitting device' does not need to change the type of the existing taximeter, and the related information of the vehicle and the taximeter such as the number of the taxi, the number of the taximeter, the k value, the critical speed, the time, the verification period and the like is transmitted to the verification device in a wireless transmission mode, and the pulse signal of each 100m of running of the taximeter is transmitted to the verification device in a wireless transmission mode in real time after being processed, so that the purpose of collecting the taxi value in real time is achieved.
The invention is suitable for the whole vehicle calibrating device of the taximeter or the local calibrating device of the taximeter. The invention can realize real-time communication between the calibrating device or the standard device of the metering department and the checked meter, the metering department can automatically acquire the information in the checked meter of the rented vehicle, such as the vehicle number, the meter number, the k value, the critical speed, the time, the calibrating period and the like, and can automatically acquire the real-time mileage data of the meter during the calibrating, thereby greatly saving the calibrating operation time and the intensity, greatly reducing the error caused by manual sampling, providing powerful technical support for the price fairness of the vast taxis and improving the intelligent metering capability level.
Drawings
Fig. 1 is a functional block diagram of an acquisition transmitter.
Fig. 2 is a partial circuit diagram of one embodiment of an acquisition transmitter.
Fig. 3 is a schematic block diagram of the reception processing apparatus.
Fig. 4 is a partial circuit diagram of one embodiment of a receive processing device.
Fig. 5 is a waveform diagram of a pulse signal.
Fig. 6 is a waveform diagram of a pulse inversion signal.
Detailed Description
The invention discloses an intelligent verification, acquisition and transmission device of a taximeter, which comprises an acquisition and transmission device and a receiving and processing device.
Fig. 1 is a functional block diagram of an acquisition transmitter. As shown in fig. 1, the acquisition and transmission device comprises a first CPU processor. The device also comprises an interface circuit, a first signal processing circuit and a signal modulation circuit. The control end of the interface circuit, the control end of the first signal processing circuit and the control end of the signal modulation circuit are all connected to the first CPU processor. The signal input end of the interface circuit passes through I 2 The C bus is in communication connection with the price calculator. The pulse signal received by the interface circuit is transmitted to the signal input end of the first signal processing circuit. The signal output end of the first signal processing circuit is connected to the signal input end of the signal modulation circuit. Also included is a drive transmit circuit. The signal output end of the signal modulation circuit is connected to the signal input end of the driving transmitting circuit. Under the control of the first CPU processor, the interface circuit is communicated with the price meter, and the received pulse signal is sent out by the drive transmitting circuit through the first signal processing circuit and the signal modulating circuit.
Fig. 2 is a partial circuit diagram of one embodiment of an acquisition transmitter. As shown in FIG. 2, in this embodiment, the model of the first CUP processor U11 is STM8L151K6T6. The interface circuit is two IC card contact modules U12 and U13, which are connected with the first CPU processor U11 through an I2C bus. The driving transmitting circuit is a CC1100 wireless module and is connected with the first CPU processor U11 through an I2C bus.
The first signal processing circuit and the signal modulation circuit are not shown in fig. 2. The signal processing circuit and the signal modulation circuit are all commonly used circuits in electronic communication, and can directly purchase a commercial circuit module for connection and use in cooperation with the instruction file or be built according to the commercial circuit module.
For example, specifically, the first signal processing circuit may be composed of a filter circuit and an amplifying circuit. The filter may be a digital filter of model LTC1569-7, outputting a sinusoidal signal, which is then suitably attenuated by an amplifying circuit to avoid its cut-off in the signal modulating circuit. The operational amplifier circuit as the amplifying circuit can be implemented using an operational amplifier AD 8541. The signal modulation circuit may be implemented using a chip model CD74HC 7046.
Fig. 3 is a schematic block diagram of the reception processing apparatus. The reception processing means includes a second CUP processor. The device also comprises a receiving circuit, a second signal processing circuit and a signal demodulation circuit. The control end of the receiving circuit, the control end of the second signal processing circuit and the control end of the signal modulation circuit are all connected to the second CPU processor. The electronic switch circuit is connected with the data storage, the keyboard, the display and the electronic switch circuit. The signal output end of the receiving circuit is connected with the signal input end of the signal demodulation circuit. The signal output end of the signal demodulation circuit is connected to the signal input end of the second signal processing circuit.
The drive transmitting circuit and the receiving circuit are in communication connection. The pulse signal output by the price meter is converted into the segment number by the receiving circuit, the signal demodulation circuit and the second signal processing circuit and is recorded in the data memory, and when the received pulse number, namely the segment number is consistent with the set value of the receiving processing device, the electronic switch circuit is triggered to collect the log value of the verification device. The keyboard and display are used to make the numerical settings.
Fig. 4 is a partial circuit diagram of one embodiment of a receive processing device. As shown in fig. 4, in this embodiment, the model number of the second CPU processor U23 is STM32F103RET6. The receiving circuit is a wireless module of model CC 1100. The keyboard and display module U21 and the data memory are connected to the I/O port of the second CPU processor. Further, in the embodiment shown in fig. 4, the second CPU processor U23 is further connected with a frequency converter control module U29, a large display screen communication module U28, a handheld keyboard module U26, a computer interface module U24, and the like, which can be selectively connected according to actual use situations.
The data memory, the second signal processing circuit, and the signal demodulation circuit are not shown in fig. 4. The second signal processing circuit and the signal demodulation circuit are all commonly used circuit modules in electronic communication, and can be directly purchased and connected with the commercially available circuit modules.
For example, the signal demodulation circuit may be implemented using a chip of the model CD74HC7046, corresponding to the signal modulation circuit. The second signal processing circuit is a pulse width adjustment processing module, and the pulse width adjustment processing module can adjust the pulse width of the demodulation signal output by the demodulation module so as to obtain a demodulation signal with a fixed pulse width. In particular, it may be implemented using pulse width modulation chip SG 3525. The data storage may use a conventional hard disk.
The invention also discloses a method for detecting, collecting and transmitting only by the taximeter, which comprises the following steps:
1) Defining each fixed driving mileage s as a section; setting the number of segments of the pulse signal to n, n=0; setting a segment value in a reception processing device; setting a departure point and a continuation point in the receiving and processing device through a display and a keyboard;
2) The collecting and transmitting device is in communication connection with the price meter; zero clearing of the driving mileage in the calibrating device;
3) As the driving wheel of the taxi rotates, the taximeter starts to record the driving mileage; under the control of the first CPU processor, the interface circuit is communicated with the price meter; each time the mileage calculated by the meter passes s=100, the meter outputs a pulse signal or pulse inversion signal. The waveform diagrams of the pulse signal and the pulse inversion signal are shown in fig. 5 and 6. The interface circuit receives the pulse signals sent by the price meter, sequentially transmits the pulse signals to the first signal processing circuit and the signal modulation circuit, and finally sends the pulse signals through the drive transmitting circuit;
4) The receiving circuit and the driving transmitting circuit are in wireless communication;
5) Under the control of the second CPU processor, the pulse signals received by the receiving circuit are sequentially processed by the signal demodulation circuit and the second signal processing circuit, and the pulse signals or pulse inversion signals output by the price meter are converted into segment values: n=n+1 for each pulse signal or pulse inversion signal received; recording the segment values in a data memory;
6) When the number of the received segments is consistent with the set segment value of the receiving processing device, triggering the electronic switch circuit to sample the log value of the verification device.
The above method is described below with an example. The method comprises the following specific steps:
1) A fixed driving range s=100m is defined as a segment. The number of segments of the pulse signal is set to n, and an initial value n=0. In the receiving processing device, a departure point n=10, a first departure point n=11 and a second departure point n=12 are set through a display and a keyboard. That is, at the departure point, the driving distance is n×s=1 km, and similarly, the driving distance at the first departure point is 1.1km, and the driving distance at the second departure point is 1.2km.
2) The collecting and transmitting device is connected with the price meter in a communication way. And (5) resetting the driving mileage value in the calibrating device.
3) As the taxi drive wheel rotates, the meter begins to meter the mileage. The interface circuit communicates with the meter under the control of the first CPU processor. The meter outputs a pulse signal or pulse inversion signal each time the mileage calculated by the meter reaches s. The interface circuit receives the pulse signal sent by the price meter, and sequentially transmits the pulse signal to the first signal processing circuit and the signal modulation circuit, and finally sends the pulse signal through the drive transmitting circuit.
4) The receiving circuit and the driving transmitting circuit are in wireless communication.
5) Under the control of the second CPU processor, the pulse signals or pulse inversion signals received by the receiving circuit are sequentially processed by the signal demodulation circuit and the second signal processing circuit, and the pulse signals or pulse inversion signals output by the price meter are converted into segment values: each time a pulse signal or pulse inversion signal is received, n=n+1. The segment values are recorded in a data memory.
6) When the number of the received segments is consistent with the set segment value of the receiving processing device, triggering the electronic switch circuit to sample the log value of the verification device. The electronic switching circuit is similar to a manual press of the "sample key" of the assay device controller. The value is the log value measured by the calibrating device when the meter logs 100m multiplied by n mileage. That is, when the verification work starts, the log values measured by the verification device at three detection points of 1km, 1.1km and 1.2km are automatically collected by the "transmitting device" of the present invention.
The above is only a preferred embodiment of the present invention, and the present invention is not limited to the above examples. It is to be understood that other modifications and variations which may be directly derived or contemplated by those skilled in the art without departing from the spirit and concepts of the present invention are deemed to be included within the scope of the present invention.
Claims (1)
1. The intelligent verification, acquisition and transmission method for the taximeter is characterized by comprising an acquisition and transmission device and a receiving and processing device, wherein the acquisition and transmission device is used for the intelligent verification, acquisition and transmission of the taximeter;
the acquisition and emission device comprises a first CPU processor; the device also comprises an interface circuit, a first signal processing circuit and a signal modulation circuit; the control end of the interface circuit, the control end of the first signal processing circuit and the control end of the signal modulation circuit are all connected to the first CPU processor; the signal input end of the interface circuit passes through I 2 The C bus is in communication connection with the price meter; the pulse signals received by the interface circuit are transmitted to the signal input end of the first signal processing circuit; the signal output end of the first signal processing circuit is connected to the signal input end of the signal modulation circuit; the device also comprises a drive transmitting circuit; the signal output end of the signal modulation circuit is connected to the signal input end of the driving transmitting circuit; driving the transmitting circuit to transmit a pulse signal;
the receiving processing device comprises a second CUP processor; the device also comprises a receiving circuit, a second signal processing circuit and a signal demodulation circuit; the control end of the receiving circuit, the control end of the second signal processing circuit and the control end of the signal modulation circuit are all connected to the second CPU processor; the system also comprises a data memory, a keyboard, a display and an electronic switch circuit which are connected to the second CPU through an I/O port; the signal output end of the receiving circuit is connected with the signal input end of the signal demodulation circuit; the signal output end of the signal demodulation circuit is connected to the signal input end of the second signal processing circuit;
the drive transmitting circuit is in communication connection with the receiving circuit;
the method comprises the following steps:
1) Defining each fixed driving mileage s as a section; setting the number of segments of the pulse signal to n, n=0; setting segment values in the receiving and processing device through a display and a keyboard;
2) The collecting and transmitting device is in communication connection with a price meter; zero clearing of the driving mileage in the calibrating device;
3) As the driving wheel of the taxi rotates, the taximeter starts to record the driving mileage; under the control of the first CPU processor, the interface circuit is communicated with a price meter; each time the mileage calculated by the meter passes s, the meter outputs a pulse signal or pulse turning signal; the interface circuit receives pulse signals sent by the price meter, sequentially transmits the pulse signals to the first signal processing circuit and the signal modulation circuit, and finally sends the pulse signals through the driving transmitting circuit;
4) The receiving circuit and the driving transmitting circuit are in wireless communication;
5) Under the control of the second CPU processor, the pulse signals or pulse inversion signals received by the receiving circuit are sequentially processed by the signal demodulation circuit and the second signal processing circuit, and the pulse signals or pulse inversion signals output by the price calculator are converted into segment values: n=n+1 for each pulse signal or pulse inversion signal received; recording segment values in the data memory;
6) When the number of the received segments is consistent with the set segment value of the receiving processing device, triggering the electronic switch circuit to sample the log value of the verification device.
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| CN201810133638.0A CN108198252B (en) | 2018-02-09 | 2018-02-09 | Intelligent verification, acquisition and transmission device and method for taximeter |
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| CN201810133638.0A CN108198252B (en) | 2018-02-09 | 2018-02-09 | Intelligent verification, acquisition and transmission device and method for taximeter |
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| CN113435527B (en) * | 2021-07-02 | 2023-06-13 | 广州计量检测技术研究院 | Taxi meter verification method and system based on machine vision |
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