JPH05128331A - Measuring instrument - Google Patents

Abstract

PURPOSE:To provide a measuring instrument which is easily and quickly installed on a road or a runway to measure required information of a vehicle or an airplane and is easily replaced and removed and is installed without hindering vehicles or pedestrians and simultaneously measures plural various information. CONSTITUTION:With respect to this measuring instrument, information measuring parts 10 to 30 which measure desired information of traffic facilities running on a road, a runway, or the like are built in a cover body 3 of a manhole 2 as an equipment of electricity, gas, water supply and drainage, or the like or a body like a manhole cover provided on the surface of the road, the runway, or the like.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a measuring device for measuring desired information of vehicles such as vehicles, airplanes and other vehicles which run on land, runways and the like.

[0002]

2. Description of the Related Art Conventionally, as a device for measuring information on a vehicle traveling on a road, a device for measuring the number of passing vehicles and a device for measuring a traveling speed for measuring the speed of the vehicle can be mentioned.

This vehicle passing number measuring device lays a rubber tube on a road surface in a direction orthogonal to the traveling direction of the vehicle, closes one end side of the rubber tube, and A diaphragm and bellows are attached to the other end. When the vehicle is stepping on the rubber tube when the vehicle is running, the diaphragm and bellows are deformed due to the increase in the pressure inside the rubber tube, and the electrical contacts are closed.By counting the number of times the contacts are opened and closed, The number of passing vehicles is measured.

The other one is to embed a plurality of loop-shaped insulated wires along the width direction of a road and flow a high-frequency current through these loop-shaped insulated wires to form a high-frequency magnetic field on the road surface. To When the vehicle passes in this state, the inductance of the apparent loop decreases due to the disturbance of the magnetic field. Therefore, the change in the inductance is detected and the number of passing vehicles is measured.

On the other hand, the vehicle traveling speed measuring device uses a Doppler radar type sensor. Specifically, a radar device having a sharp directional antenna is installed on the side of the road, and this directivity is set. An electromagnetic wave having a constant frequency is continuously transmitted from the antenna to the traveling vehicle, and the received wave reflected from the surface of the traveling vehicle is received by the antenna. At this time,
The frequency of the received wave increases as the vehicle approaches,
Since the frequency decreases as the distance increases and the frequency of the received wave is proportional to the product of the traveling speed of the vehicle and the transmission frequency, the traveling speed of the vehicle can be obtained by using this relationship.

[0006]

However, all of the above-mentioned two vehicle passing vehicle number measuring devices are large-scaled and cannot be easily attached and detached. In addition, equipment failure, road improvement, road excavation, pavement replacement, etc. often occur, but at this time, it is necessary to dig up the road and remove the equipment. It needs to be fixed and very tedious.

On the other hand, in the latter vehicle speed measuring device, since the steel pole is set up on the side of the road and the radar device is installed,
There is a problem that the measuring device becomes very large and costly, and that it occupies a part of a walking path where a person walks, which disturbs walking. Furthermore, in the above device,
There is a problem that it is difficult to measure a plurality of pieces of information at the same time, which makes it difficult to use for multiple purposes.

The present invention has been made in view of the above circumstances, and can be easily and quickly installed on a road or runway.
Another object is to provide a measuring device that can be easily replaced or removed. Another object of the present invention is to provide a measuring device that can be installed without occupying a roadway or a walking road. Further, another object of the present invention is to provide a measuring device capable of simultaneously measuring a plurality of different information such as a vehicle.

[0009]

In order to solve the above-mentioned problems, the invention corresponding to claims 1, 4, and 5 travels on a road, a runway, etc. inside a lid of a manhole generally used in urban areas. Information desired by transportation, that is, traffic volume,
An information storage unit for holding at least one piece of information such as passage speed, type, aging degree, exhaust gas, weight and other information, and an information storage section for holding measurement information or its measurement information, The measuring device incorporates an information measuring unit including an information transmitting unit that transmits retained information to the outside by wire or wirelessly.

The inventions corresponding to claims 2, 4 and 5 have manhole lids of various forms installed on the surfaces of roads, runways, etc., and inside the lids, roads, runways, etc. An information detector is provided for detecting at least one of desired information of the traveling vehicle, ie, traffic volume, passing speed, type, aging degree, exhaust gas, weight and other information, and the measurement is performed. The measuring device incorporates an information measuring unit including an information storage unit that retains information or its measurement information, an information transmitting unit that transmits retained information to the outside by wire or wirelessly.

According to a third aspect of the present invention, a lid or a lid-like body is formed by partially or entirely forming an upper portion of the lid or a transparent member with respect to light having a wavelength of use, magnetic flux, or the like. The invention corresponding to (1) has a configuration in which at least the information storage unit that holds the measurement information is detachable from the information measurement unit.

[0012]

Therefore, according to the present invention, by taking the above-mentioned means, the information measuring unit is incorporated into the inside of the lid or the lid of the manhole. Therefore, the manhole lid or the lid is selected. Then, it can be fitted to a lid receiver such as a manhole or road, and it is very easy to measure the desired information. Moreover, it is not necessary to select a new place to install it, and of course replacement and removal work is also possible. It's easy.

Furthermore, if an information measuring section having an information detecting section for measuring a plurality of information is incorporated inside the lid or the lid-like body, it is possible to measure a plurality of information at the same time.
Furthermore, by incorporating a microcomputer, etc.,
A large amount of information can be measured and stored.

[0014]

[Examples] Generally, it is indispensable to acquire various information from the land transportation in order to improve the road network, improve the environment, and make an appropriate operation plan for the land transportation system.
Here, the various information includes, for example, the traffic volume of the vehicle, the traveling speed of the vehicle, the vehicle type, the age of the vehicle, the exhaust gas condition, the guidance of the vehicle at the highway toll gate, and the weight of the vehicle. Moreover, it is necessary to easily and quickly measure one or more desired pieces of information among these pieces of information.

Therefore, it is conceivable to obtain various information of the vehicle from the air by using various means in order to meet such a need. However, it is difficult to obtain various information on the atmosphere, the shape of the vehicle, and the distance. , It is difficult to get those information easily.

[0016] If possible, if the desired information can be measured by simply installing it near the surface of a road or runway, the distance from the road or runway to the vehicle will be very short, and accurate information can be acquired. It is considered that it can make a great contribution to road network maintenance, environmental improvement, and land transportation system operation planning. The device of the present invention has been devised from the above urgent and imminent circumstances, and one embodiment thereof will be described below with reference to FIG.

Generally, pipes 1 for electricity, gas, water and sewerage, etc. are buried in the soil such as main roads, residential roads, and roads in factories. The manhole 2 is provided in the direction. The lid 3 is closed in each of the manholes 2. However, in the device of the present invention, an information measuring unit is incorporated in the lid 3 to form a measuring device including the lid 3. The reason is that the lid 3 of the manhole 2 is installed in a place where traffic is frequent for many years, and is handled without any discomfort even in human consciousness, in addition to traffic safety. The manhole 2 is not limited to the one for electricity, gas, and water / sewer, but may be a dedicated one for the measurement device. In this case, the pipe 1 may be unnecessary.

More specifically, a lid receiving body 4 is embedded in the upper portion of the manhole 2, and the manhole lid 3 is closed in the lid receiving body 4 so as to fit therein. An information measuring unit, which will be described later, is incorporated in the inside of the lid 3, and the external wiring 5
Alternatively, a configuration may be adopted in which electric power is supplied from the sewage pipe inner wiring 5b as indicated by a or a dotted line in the drawing, and a solar cell is used to supply electric power, which is not illustrated. The top 3 of the lid
The material a is formed by using a metal material so that it can withstand a heavy object sufficiently, but the material will be different depending on what is used as the information detection unit as described later. For example, when measuring the passing amount of the vehicle using a light receiver as the information detection unit, tempered glass or other transparent member is used,
When the amount of passage of the vehicle is measured using magnetic force lines, a non-ferrous metal such as aluminum may be used as long as it is transparent to the magnetic force lines, that is, allows the magnetic force lines to pass. Further, even when the transparent member is used, the transparent member may be provided on the entire upper portion 3a of the lid or only the necessary portion.

The information measuring unit is incorporated in the inside of the lid 3 as described above. As the information measuring unit, for example, the information detecting unit 10 for detecting the information of the vehicle and the information detected by the information detecting unit 10. Information storage unit 2 for storing
0 is further provided, and if necessary, an information transmission unit 30 that transmits the detected measurement information of the information storage unit 10 or the information stored in the information storage unit 20 is provided.

The information detecting section 10 varies depending on the purpose of measurement. For example, in the case of measuring the traffic volume of a vehicle, a detector using electromagnetic waves or light, microwaves, magnetic field lines,
A detector that uses ultrasonic waves or the like, and further, acoustic sensing or the like can be used. For example, in the case of acoustic sensing, it can be measured by measuring the engine noise, exhaust noise of the vehicle, and the level of electromagnetic noise generated from the engine. it can. In addition, when measuring the passing speed of the vehicle, a predetermined distance (eg 30 cm) inside the lid 3
Two sensors are provided separately from each other, and measurement is performed using a correlation method, or the Doppler effect is used by transmitting an electromagnetic wave (light containing wave) or sound of a predetermined frequency, the frequency increases when the vehicle approaches, and the frequency increases when the vehicle passes by. Can be measured, that is, the number of vehicles passing through and the vehicle running speed can be measured by using the acoustic Doppler effect. Furthermore, a mark that can detect the vehicle type, vehicle inspection certificate, etc. is attached under the vehicle floor, and the vehicle type of the passing vehicle can be detected from the mark, the engine sound of the vehicle, the exhaust sound,
Whether measuring the aging degree of the vehicle by measuring the noise generated from the engine and acoustically analyzing it, or analyzing the exhaust gas using the vehicle exhaust gas measurement sensor,
A load sensor is provided to measure the weight of the vehicle, or the information detection unit 10 further receives a signal of the vehicle having a prepaid card, or reads whether or not the vehicle has a prepaid card, and transmits the result to, for example, a highway gate. For example, passing a traveling vehicle through a free gate. Next, it is assumed that the information storage unit 20 uses a counter, a commonly used memory, or an external storage device such as a floppy disk.

On the other hand, the information transmitting section 30 can transmit information by wire as well as wirelessly.
In the case of wireless communication, the antenna can be attached to the inside or outside of the lid upper portion 3a, or can be installed in the filling material inside.

FIG. 2 is a block diagram showing a specific example of the information measuring section. That is, the information detection unit 10 in the information measurement unit includes an information detection sensor 11 including a sensor circuit that detects desired information of the vehicle, an amplifier 12 that amplifies the output of the sensor 11, and an output of the amplifier 12. Binarization processing circuit 1 for performing binarization processing at a predetermined threshold level
The information storage unit 20 includes a counter 21 that counts binarized signals below or above a predetermined level, a clock circuit 22 that keeps time, and the contents of the counter 21 at predetermined time intervals. Is written in the memory 23 and the like. In this case, for example, the number of vehicles passing by each hour can be stored. Further, if necessary, the information transmission section 30 may include the pre-stage amplifier 1
In addition to the power amplifier 31 that power-amplifies the amplified output of No. 2, the modulation circuit 33 that performs high frequency modulation and transmits from the antenna 32 can be used to wirelessly transmit information to the outside.

Next, FIG. 3 is a diagram showing an example of a configuration for measuring a plurality of information using a microcomputer. This information measuring unit uses the interfaces 42 ₁ to 4 4 corresponding to the information detected by the information detecting sensors 41 _{1 to} 41 _n .
2 _n , where necessary processing such as digital conversion and temporary holding of information are performed. On the other hand, the CPU 43 fetches each piece of information from the interfaces 42 _{1 to} 42 _n based on the program stored in the ROM 44, executes the processing according to the measurement purpose, and outputs the processing result information to the RAM 45 or the input / output port. It is stored in the external storage device 47 via 46. Then, the CPU 43 reads out the information from the RAM 45 based on the program data and transmits it to the information transmitting unit 48.

The information transmitting unit 48 performs serial information conversion, analog information conversion, amplification of analog information, and modulation processing for modulating at high frequency on the parallel information read by the CPU 43, and transmits it by wire or wirelessly. ..

Therefore, according to the configuration of the above embodiment, since the information measuring unit is incorporated in the lid 3 of the manhole 2, the existing manhole is required to measure desired information of the vehicle or aircraft. It suffices to select the lid body 3 that matches the measurement information instead of the lid 2 and close the manhole 2, and the measurement device can be installed very easily and quickly. Moreover, since the manhole 2 for electricity, gas, and water / sewerage is installed in all places such as urban areas, and also in places with frequent traffic, it can be installed without occupying special roads or walking roads. It is also easy to replace or remove. Further, various information detection units can be provided inside the lid body 3, a plurality of types of information can be measured at the same time, and the measurement information can be stored and transmitted to a necessary place.

Next, FIG. 4 is a block diagram showing another embodiment of the present invention. This measuring device does not use the existing manhole 2, but newly installs the lid receiver 4 on the road surface such as a road.
After embedding, a lid-like body 3'in which an information measuring unit for measuring information is incorporated in the lid receiving body 4 is fitted.
In this case, a tempered glass window 3b is provided in a part of the lid-shaped upper portion 3a ', that is, a portion for taking in sunlight, and the solar cell 6 is attached to the back side of the tempered glass window 3b. The inside of the lid 3'is filled with a filling material 7 such as plastic for the purpose of preventing vibration of necessary components. Reference numeral 8 denotes ultrasonic waves and other detection waves. The filling material 7 may have a structure in which a transmitting or receiving antenna is embedded.

FIGS. 5 and 6 are views for explaining another embodiment of the manhole cover. Figure 5 (a)
After excavating the road surface such as a road to the required depth,
A cylindrical lid receiver 4A having a predetermined length is embedded in the excavation hole. And, in the inside of this cylindrical lid receiving body 4A, FIG.
The manhole cover 3A having a pipe-shaped body for accommodating the flexible thin coil 10A forming a part of the information detection unit 10 is fitted to the lower portion as shown in FIG.

This structure has a flexible thin coil 10
The magnetic flux from A is emitted into the road from the ground or from the ground, and the vehicle (metal body) traveling on the road is caused to generate a secondary magnetic flux by changing the inductance or generating an eddy current in the vehicle metal. The secondary magnetic flux is detected by the flexible thin coil 10A to detect the number of vehicles. Moreover, since the flexible thin coil 10A is installed in the semi-underground and the detection line is fired in the air in a narrow range as is clear from FIG. 7C, most of the magnetic flux spreads in the ground. , The influence on the outside world can be suppressed to be small.

Next, FIG. 6 is a diagram showing an example applied to a highway, for example. That is, FIG. 1A shows a tubular lid receiving body 4 that is bent from the end of the highway toward the center of the road.
After burying B, the flexible antenna for microwaves 10 which constitutes a part of the information detecting unit 10 at the lower portion as shown in FIG.
This is a configuration in which the manhole cover 3A to which B is attached is fitted. The flexible antenna 1 for microwaves
When the microwave is emitted from 0B, an electrical insulator such as glass fiber reinforced plastic is used for the cylindrical lid receiver 4B.

With this structure, the flexible antenna 10B can be inserted and installed in the shape of the cylindrical lid receiving body 4B. This device emits microwaves of, for example, about 1 to 5 GHz from the ground, causes a dielectric change or the like by a vehicle traveling on the road, and measures the number of vehicles, or detects the speed using the Doppler effect. It is effective when doing.

Further, FIG. 7 shows, for example, a plurality of flexible antennas 10B for microwaves at predetermined intervals in a parking lot or the like.
If the manhole cover 3B with the attached is installed and the system integration antenna 50 is further embedded, the microwave antenna 10B has 300 to 800 MHz,
By handling a frequency of about 1 to 12 GHz, it is possible to propagate through the ground for several meters to several tens of meters, that is, underground communication can be performed. An antenna that can emit microwaves toward the sky is built into the manhole cover, and the presence or absence of a vehicle is detected by a dielectric change or the like, and the detection effect is detected between each microwave antenna 10B and the system integration antenna 50 or 10B. Underground communication,
The result can be communicated to the system integration antenna 50. The lids 3A and 3B are powered by batteries, solar cells, wires, or the like.

Therefore, according to the structure of this embodiment, it is necessary to newly install the lid-like bodies 3a ', 3A and 3B.
Even if it is installed on a road or a pedestrian road, it does not get in the way and can be safely installed in a place where traffic is frequent, and when it is unnecessary, it can be put on the lid-like body 3a 'and covered with a general lid, It is extremely convenient to handle and can measure the necessary information immediately when needed.

In the above embodiment, the lid 3 and the lid-shaped bodies 3 ', 3A and 3B are assumed to be hermetically sealed, but the lid 3 and the lid-shaped bodies 3', 3A and 3Ba are described. As opposed to
The entire information measuring unit may be detachable in a cassette type, or only the information storage unit may be detachable. Further, it can be easily applied not only to vehicle information measurement but also to aircraft and other transportation information measurement. further,
Although the information transmission unit has been described for the purpose of transmitting information exclusively, it may be configured to receive information from an appropriate other party, measure or process necessary information according to the received content, and return it to the other party. .. Besides, the present invention can be variously modified and implemented without departing from the scope of the invention.

[0034]

As described above, according to the present invention, the information measuring unit is incorporated inside the lid of the manhole installed on the road or the inside of the lid newly installed on the road. Therefore, it can be easily and quickly installed on a road or runway to measure necessary information, and replacement work and removal work of the device are easy. Furthermore, it can be installed on the roadway or pedestrian road without obstruction, and it can measure different information at the same time.

[Brief description of drawings]

FIG. 1 is a sectional view showing an embodiment of a measuring apparatus according to the present invention.

FIG. 2 is a block diagram showing a specific example of an information measuring unit.

FIG. 3 is a hardware configuration diagram showing a specific example when a plurality of information is measured using a microcomputer.

FIG. 4 is a sectional view showing another embodiment of the measuring apparatus according to the present invention.

FIG. 5 is a diagram for explaining another embodiment of the lid-shaped body and the information detection unit of the measuring device according to the present invention.

FIG. 6 is a view for explaining still another embodiment of the lid-shaped body and the information detection unit of the measuring device according to the present invention.

FIG. 7 is a diagram showing an example in which a plurality of lid-shaped bodies are arranged at predetermined intervals and transmitted to a system integrated antenna.

[Explanation of symbols]

1 ... Piping, 2 ... Manhole, 3 ... Lid, 3 ', 3A, 3
B ... Lid-like body, 4, 4A, 4B ... Lid receiving body, 10, 20,
30 ... Information measuring unit, 10 ... Information detecting unit, 10A ... Flexible thin coil, 10B ... Flexible antenna, 20 ... Information storage unit, 30 ... Information transmitting unit.

Claims (6)

[Claims] 1. A built-in information measuring unit for measuring desired information of a transportation system such as a road or a runway, inside a cover of a manhole used for facilities such as electricity, gas and water / sewerage. It is a measuring device characterized by 2. An information measuring unit for installing a manhole cover on the surface of a road, a runway, etc., and measuring desired information of a transportation system running on a road, a runway, etc. inside the cover. Measuring device characterized by incorporating. 3. The lid or the lid-like body is provided with a transparent member on a part or all of an upper portion thereof.
Alternatively, the measuring device according to claim 2. 4. The information measuring unit has an information detecting unit for detecting at least one or more of traffic volume, passage speed, type, aging degree, exhaust gas, and weight of a transportation facility. Alternatively, the measuring device according to claim 2. 5. The information measuring unit has an information storage unit that holds the measurement information or the measurement information, and an information transmission unit that transmits the information held in the information storage unit to the outside by wire or wirelessly. The measuring device according to claim 1 or 2. 6. The measuring device according to claim 1, wherein at least an information storage unit for holding measurement information is detachable from the information measurement unit.