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RF & Wireless Systems · Hardware

Wireless Taxi Call System

Coming soonModel code: TCS

Press the button, the taxi is at the door — stand calls without phones or apps.

Request information Specifications
Taxi call system: subscriber button with yellow key, 7-inch rank receiver showing the call list and driver remote

Overview

The problem. Taxi stands take calls from their subscribers (elderly and disabled people, residents of housing estates, shopkeepers) by phone: the line is busy, the number is forgotten, and not every customer has a smartphone or app. Existing wireless button systems work with simple light/sound receivers: you cannot see which subscriber pressed, in what order or how many times; there is no "received" signal from the driver's remote; the devices are old and spare parts are gone.

The solution. When pressed, the battery-powered button in the subscriber's home sends its ID and button number to the stand over RF. The stand receiver shows the subscriber's name/address, the time and the queue on a DWIN touchscreen, and a buzzer sounds. The next driver takes the call from the screen or from their own remote, and the call drops off the list. A web interface (ESP) manages the subscriber list and logs from a browser. With the two-way LoRa profile, an LED on the subscriber's button is intended to confirm the pickup.

Gradual migration. The new stand receiver uses the same RF settings as the subscriber buttons already installed in the field, so stands can switch over without replacing their buttons. In new installations, the LoRa button of the Wireless Call Button Platform provides long range and long battery life.

Night: wireless call from the taxi button at an apartment entrance to the rank desk screen; lit TAXI sign behind
In use
Taxi call components: TCS-BTN subscriber button, 10.1-inch wall and 7-inch desk receivers, TCS-RX-WEB, TCS-RMT
Product family

This product is in development or field testing. Contact us for technical information, pilot use and a preliminary quotation.

Features

  • Compatible with installed buttons: the same RF settings as the subscriber buttons already in the field; gradual migration to LoRa.
  • Touchscreen call list: subscriber name/address, time and queue; "take / close / cancel" with a single tap; selectable alert tone.
  • Driver remote: take the next call without walking to the screen; every remote has its own ID, so the log shows which vehicle took the call.
  • Web interface (ESP): subscriber registration, log export, Wi-Fi setup; no PC software needed.
  • Repeat-press merging: repeated presses by the same subscriber count as a single call.
  • TargetTwo-way LoRa: call confirmation by LED on the subscriber's button.
  • TargetButton battery report: low-battery warning on the stand display.
  • TargetReal-time clock and persistent log: call history kept with an RTC in Flash memory.
  • TargetRepeater and neighbor-stand separation: range extension; stands fully separated by network ID (NetID).
  • Target3-button subscriber version: taxi / cancel / emergency.
  • TargetDriver pager: the WR-001 remote shows the call in the driver's pocket.
  • TargetCloud log: call history kept on Telemetry & Process Intelligence.

System components

System components
Model codeComponentHardwareStatusRequest information
TCS-BTNSubscriber call buttonSTM32F030 + CC1101; LoRa version planned on the battery profile of the Call Button PlatformPrototypeRequest information: TCS-BTN
TCS-RX-DWINStand receiver + 7 / 10-inch DWIN touchscreen + buzzerPIC16F887 / ESP + CC1101; EM-G0LW-433 + DWIN T5L version plannedPrototype (UI 800×480 / 1024×600)Request information: TCS-RX-DWIN
TCS-RX-WEBStand receiver without display, Wi-Fi web interfaceESP + CC1101; EM-G0LW-433 version plannedPrototypeRequest information: TCS-RX-WEB
TCS-RMTDriver remote (take / close call)First prototype; move to the 1-button profile of the Call Button Platform plannedPrototypeRequest information: TCS-RMT

Specifications

Values marked “Target” are design targets, next-generation values or chip-vendor data; they are updated as measurement and certification are completed.

Radio
Frequency (compatible profile)~434.65 MHz
Frequency (LoRa)433.05–434.79 MHz, 8 channelsTarget
Channels (compatible profile)Single fixed channel (compatibility with installed buttons)
Channels (LoRa)8Target
Output power (compatible profile)≤ +10 dBm (CC1101)
Output power (LoRa)+22 dBm (SX1268)Target
Receiver sensitivity (compatible profile)~−104 dBm @ 2.4 kbps (chip datasheet)
Receiver sensitivity (LoRa)−129 dBm @ SF11Target
Modulation / rate (compatible profile)2-FSK, ~2.4 kbps, ~5 kHz deviation, 15-byte fixed packet
Modulation (LoRa)LoRa SF7–SF10Target
AntennaButton: internal PCB / helical antenna; receiver: external SMA, omni antenna
Range
Urban (compatible profile)Neighborhood scale (field experience; not measured)
Open field (LoRa)≥ 2000 m (SF9, stand outdoor antenna at 3 m height)Target
Urban (LoRa)≥ 500 mTarget
Communication & security
Coding (compatible profile)ID + CRC; no encryption
Encryption (LoRa)AES-128, NetID + 16-bit address, replay counterTarget
Neighboring stands (compatible profile)Single channel; stands are separated by ID list
Neighboring stands (LoRa)≥ 8 neighboring stands via channel × NetIDTarget
Performance & fail-safe
Call latency< 1 s (button → screen)
On communication lossThe call stays on the list
Button retryThe button resends the call if no acknowledgment arrivesTarget
Power
Stand receiver12 VDC adapter (7-inch display ~0.5 A; 10.1-inch ~1 A)
Stand receiver (new version)12–24 VDC; optional battery backupTarget
Subscriber button batteryCR123A or 2×AA; ≥ 2 years at ~10 calls/dayTarget
Driver remote batteryCR2032 / CR123ATarget
Interfaces
DisplayDWIN T5L DGUS II; 7-inch 800×480 or 10.1-inch 1024×600; UART 115.2 kbps
Receiver outputsBuzzer; Wi-Fi web interface (ESP)
Beacon relay1× relayTarget
ServiceSWD / UART; settings via the web interface
Mechanical & environmental
Receiver housingDesktop / wall-mount display housing (7 / 10-inch bezel); IP20, indoor
Button housingWall-mounted; IP54 (outside door)Target
Operating temperature (receiver)0…+50 °C (indoor)
Operating temperature (button)−20…+60 °CTarget
Warranty & service
Warranty2 years; service in AnkaraTarget

Applications

  • Taxi stands
  • Housing estates
  • Neighborhood subscriber networks
  • Municipal taxi stands
  • Hotel and resort receptions
  • Beach taxi calls
  • Hospital, mall and airport taxi bays

With the profiles of the Wireless Call Button Platform, the same stand unit can also handle hotel service calls and housing-estate security calls. For service calls in hotels and restaurants, Wireless Waiter Call — Long Range is also available. On the driver side, the WR-001 LoRa Wireless Alarm / Call Remote is planned as a pager that shows the call in the driver's pocket.

Compliance & documentation

The system is at prototype stage. The datasheet, stand-operator and subscriber manuals, installation guide and certificates will be prepared step by step according to the plan below; the subscriber button is documented together with the Call Button Platform.

  • CE – RED 2014/53/EU (EN 300 220-2, EN 301 489-1/-3)
    Step by step, starting at module level
    Target
  • LVD – EN 62368-1
    Stand unit with adapter
    Target
  • RoHS declaration
    Target
  • CE declaration of conformity; user and installation manuals
    Target

Frequently asked questions

Will the subscriber buttons already at our stand work with the new receiver?

The new receiver uses the RF settings of the subscriber buttons already installed in the field (434.65 MHz, 2-FSK, 2.4 kbps), so those buttons keep working without replacement. Compatibility with buttons that use other RF settings is assessed separately. Migration to LoRa buttons is gradual; the two receivers can run side by side.

How many subscribers can one stand serve?

The new generation targets more than 1,000 subscribers per stand with 16-bit addressing. In the compatible profile, the number of subscribers is limited by the protocol's ID field.

Do neighboring stands see each other's calls?

In the single-channel compatible profile, stands are separated by their ID lists; unregistered IDs are not shown on the screen. In the new generation they are fully separated by channel and network ID (NetID).

What is the range?

In the compatible FSK profile it covers a neighborhood (no measured value yet); with the LoRa button, ranges in the kilometer class are targeted in open field. An outdoor antenna and a repeater extend it.

How long does the subscriber button battery last?

The target is ≥ 2 years at ~10 calls a day; a low-battery warning on the stand display is planned.

How does a driver take a call?

By tapping the screen or using their own remote; the log records which driver took it.

Can the subscriber see that the call was taken?

Not in the compatible profile; LED confirmation is targeted for the two-way LoRa button.

Is a phone or app required?

No; the system runs entirely on local RF and there is no subscription. The web interface is only for managing the stand.

What about the warranty?

A 2-year warranty is planned; the button battery is a consumable.

Get information about this product

Our engineering team replies within 24 hours.

Request information +90 (312) 395 85 86

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