CN201111733Y

CN201111733Y - Eight-probe parking yard parking space guidance system harvester

Info

Publication number: CN201111733Y
Application number: CNU2007201143332U
Authority: CN
Inventors: 钱小鸿; 王健; 金仲存
Original assignee: HANGZHOU YINJIANG ELECTRONICS CO Ltd
Current assignee: Enjoyor Co Ltd
Priority date: 2007-09-06
Filing date: 2007-09-06
Publication date: 2008-09-10
Anticipated expiration: 2017-09-06

Abstract

The utility model discloses a collection device of an eight-probe parking lot parking space guide system, comprising a micro-controller circuit, a programmable logic circuit, eight lines of ultrasonic probe drive circuits and eight lines of ultrasonic detection circuits, the programmable logic circuit is connected with each line of ultrasonic probe drive circuit by signal lines; each line of ultrasonic probe drive circuit is connected with one ultrasonic probe, the ultrasonic probes are simultaneously connected with the ultrasonic detection circuits; the ultrasonic detection circuits are connected with the programmable logic circuit which carries out the detection of the generated ultrasonic echo signals by the ultrasonic detection circuits by signal lines; the micro-controller circuit is connected with a control main machine by a 485 communication bus, and the micro-controller circuit can generate the current status information of parking spaces according to the received ultrasonic echo time information by the programmable logic circuit. The collection device has the advantage that the collection device can accurately detect the parking status of vehicles.

Description

Eight probe parking position guidance system harvesters

Technical field

The utility model belongs to the detecting instrument field, a kind of specifically harvester of parking position guidance system.

Technical background

The instrument that is used for the parking position detection in the market all is single probe or two probe, promptly one to two ultrasound examination point is joined in a parking stall, it can only detect whether car is arranged in the parking stall, just whether stopping and can not detect vehicle more accurately, even a car can occur and take two situations such as parking stall, be not easy to parking lot management.

Summary of the invention

In order to address the above problem, the utility model provides a kind of eight probe parking position guidance system harvesters that can accurately detect the parking condition of vehicle.Eight road probes are distributed in a parking stall entirely, and comprehensive detection prevents that vehicle from stopping partially or situation that car takies two parking stalls takes place.

The technical solution adopted in the utility model is as follows: a kind of eight probe parking position guidance system harvesters, comprise microcontroller circuit, Programmable Logic Device, eight road ultrasonic probe driving circuits and eight tunnel ultrasound examination circuit, Programmable Logic Device links to each other with each road ultrasonic probe driving circuit by signal wire; Each road ultrasonic probe driving circuit links to each other with ultrasonic probe, and ultrasonic probe links to each other with the ultrasound examination circuit simultaneously; Described ultrasound examination circuit links to each other with the Programmable Logic Device that is used for the ultrasonic echo signal that the ultrasound examination circuit produces detects by signal wire; Microcontroller circuit, microcontroller circuit is connected with main control system by 485 communication buses.

Further described eight road ultrasonic probes are positioned at the different azimuth point of a parking stall.

Further described harvester is configured by upper PC by 485 communication buses.

Further also comprise the voice reminder circuit, described voice reminder circuit links to each other with microcontroller by the eight bit data bus, be used to control the output of the corresponding voice messaging of sound circuit, the voice reminder circuit also links to each other with Programmable Logic Device by the gating signal line, is used to control the voice reminder circuit and whether exports voice.

Further also comprise status display circuit, described status display circuit links to each other with microcontroller by signal wire, is used to control the current dead ship condition information that parking stall state display screen shows the parking stall.

The beneficial effect that the utility model is gathered extension set is: 1, eight tunnel ultrasound examinations are all independently finished by CPLD, and not only system architecture is simple, also can guarantee the real-time of system communication; 2, harvester and main control system are by 485 bus communications, main control system is a main frame, harvester is a slave, not only can finish the configuration of transmission to the parking stall status information, harvester correlation parameter and carry out operations such as remote reset by 485 buses, and the reliable communicating distance, the total system wiring is simple; 3, eight road of the utility model harvester probes are distributed in a parking stall entirely, and comprehensive detection parking stall prevents that vehicle from stopping partially or situation that car takies two parking stalls takes place; 4, the utility model harvester is integrated parking stall status display circuit can show that by parking stall state display screen current this parking stall is to be in car is arranged, there be not car or predetermined state; 5, the utility model harvester is integrated voice reminder circuit has voice suggestion when vehicle stops partially or car takies two parking stalls situation takes place, voice suggestion is also arranged when vehicle is swarmed into the predetermined state parking stall.

Description of drawings

Fig. 1 is the utility model eight probe parking position guidance system harvester theory diagrams.

Fig. 2 is the utility model eight probe parking position guidance system harvester structured flowcharts.

Fig. 3 is the utility model eight probe parking position guidance system harvester scheme of installations.

Embodiment

As illustrated in fig. 1 and 2, eight probe parking position guidance system harvesters of the present utility model comprise microcontroller circuit, Programmable Logic Device, eight road ultrasonic probe driving circuits and eight tunnel ultrasound examination circuit, and Programmable Logic Device links to each other with each road ultrasonic probe driving circuit by signal wire; Each road ultrasonic probe driving circuit links to each other with ultrasonic probe, and ultrasonic probe links to each other with the ultrasound examination circuit simultaneously; Described ultrasound examination circuit links to each other with Programmable Logic Device by signal wire, Programmable Logic Device is used for the ultrasonic echo signal that the ultrasound examination circuit produces is detected, calculate ultrasound wave and receive the used time of echo, and give microcontroller circuit by the eight bit data bus transfer this temporal information from being sent to; Microcontroller circuit is connected with main control system by 485 communication buses, this microcontroller circuit is according to the current status information in ultrasonic echo time information generating parking stall from Programmable Logic Device receives, when receive that main control system sends read parking stall current state order the time, just send current parking stall status information to main control system.

Also be provided with status display circuit and voice reminder circuit on the described harvester, status display circuit mainly is made up of ULN2803 and parking stall state display screen etc., use ULN2803 to increase the driving force of microcontroller to parking stall state display screen, in each parking stall a state display screen is arranged all, can show this parking stall current be to be in car is arranged, not have car or by reservation state.The voice reminder circuit is mainly by eight bit data latch 74LVC374, speech chip, power amplifier, compositions such as loudspeaker, 74LVC374 latchs the voice control information that microcontroller is delivered on the eight bit data bus, and give speech chip with the voice control information by eight signal wires, speech chip is given power amplifier with the voice signal of corresponding paragraph by signal wire according to this control information, power amplifier amplifies this voice signal again gives loudspeaker at last, all there is a loudspeaker each parking stall, can in docking process, accompany voice reminder can be arranged, guarantee that vehicle just stops, if there is vehicle to swarm into when the parking stall is in predetermined state, the voice reminder circuit also has corresponding voice reminder.

Harvester of the present utility model is when work, drive eight road ultrasonic probes by Programmable Logic Device and make its poll work, and finish eight tunnel ultrasound examinations, after one tunnel detection is finished, promptly notify probe that microcontroller circuit reads away this road ultrasonic echo temporal information and work at present probe number, microcontroller circuit judges according to the ultrasonic echo temporal information of reading whether this probe detects car body, the state display screen then shows the current state of this parking stall, car is promptly arranged, do not have car or by reservation state, when receive that main control system sends read parking stall current state order the time, just send current parking stall status information to main control system by 485 buses.

Described harvester has 8M clock and RESET reset circuit, the 8M clock links to each other with programmable logic device (PLD) with microcontroller by clock cable, be used for providing work clock to microcontroller and programmable logic device (PLD), the RESET reset circuit links to each other with microcontroller by signal wire, is mainly used in microcontroller is carried out reset operation.

Harvester of the present utility model is configured by host computer (PC) by 485 buses, and host computer changes 485 interfaces by 232 and links to each other with 485 buses of harvester, and harvester needs parameters such as configuration device ID number, parking stall measure reference range.

As shown in Figure 3, described eight road ultrasonic probes are positioned at the different azimuth point of a parking stall, promptly comprehensive detection.Probe 1 and probe 2 are positioned at the centre position of parking stall, as long as two probes have one to detect car body and illustrate that then there is car this parking stall, if two probes all do not detect car body duty explanation parking stall and do not have car, the probe 3～probe 8 be positioned at the parking stall around, illustrate that then car has stopped partially as long as there is a probe to detect car body, the voice reminder circuit sends the prompting voice.

Claims

1, a kind of eight probe parking position guidance system harvesters, it is characterized in that: comprise microcontroller circuit, Programmable Logic Device, eight road ultrasonic probe driving circuits and eight tunnel ultrasound examination circuit, Programmable Logic Device links to each other with each road ultrasonic probe driving circuit by signal wire; Each road ultrasonic probe driving circuit links to each other with ultrasonic probe, and ultrasonic probe links to each other with the ultrasound examination circuit simultaneously; Described ultrasound examination circuit links to each other with the Programmable Logic Device that is used for the ultrasonic echo signal that the ultrasound examination circuit produces detects by signal wire; Microcontroller circuit, microcontroller circuit is connected with main control system by 485 communication buses.

2, according to eight probe parking position guidance system harvesters of claim 1, it is characterized in that: described eight road ultrasonic probes are positioned at the different azimuth point of a parking stall.

3, according to eight probe parking position guidance system harvesters of claim 1 or 2, it is characterized in that: described harvester is configured by upper PC by 485 communication buses.

4, according to eight probe parking position guidance system harvesters of claim 3, it is characterized in that: also comprise the voice reminder circuit, described voice reminder circuit links to each other with microcontroller by the eight bit data bus, be used to control the output of the corresponding voice messaging of sound circuit, the voice reminder circuit also links to each other with Programmable Logic Device by the gating signal line, is used to control the voice reminder circuit and whether exports voice.

5, according to eight probe parking position guidance system harvesters of claim 4, it is characterized in that: also comprise status display circuit, described status display circuit links to each other with microcontroller by signal wire, is used to control the current dead ship condition information that parking stall state display screen shows the parking stall.